RU2810268C2 - Transmission of transmission parameters in signals - Google Patents

Abstract

FIELD: wireless communication.

SUBSTANCE: user equipment (UE) receives a plurality of transmission parameter sets for a random access channel-based procedure, each transmission parameter set including a different time resource allocation, a frequency resource allocation, or a combination thereof. A set of transmission parameters is selected from a plurality of sets of transmission parameters for transmitting a message over the random access channel of the procedure based on the random access channel, wherein selecting the set of transmission parameters comprises selecting a set of transmission parameters based on the resources to be used for the message over the random access channel. A message is transmitted to the base station over a random access channel in accordance with a selected set of transmission parameters, wherein the message over the random access channel includes a random access preamble and an information message.

EFFECT: improvement of transmission of transmission parameters in signals.

17 cl, 21 dwg

Description

Cross references to related applications

[0001] This patent application claims priority to US Patent Application No. 16/783,149 to SARKIS et al., entitled "SIGNALING OF TRANSMISSION PARAMETERS", filed February 5, 2020, which claims priority to a provisional patent application (Greece) ) No. 20190100065 by SARKIS et al., entitled "SIGNALING OF TRANSMISSION PARAMETERS", filed February 7, 2019, assigned to the assignee hereof.

State of the art

[0002] The following generally relates to wireless communications, and more specifically to the signaling of transmission parameters.

[0003] Wireless communication systems have been widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcast, and the like. These systems may be capable of supporting communications with multiple users by sharing available system resources (eg, frequency, time, and power). Examples of such multiple access systems include fourth generation (4G) systems, such as Long Term Evolution (LTE) or LTE Advanced (LTE-A) or LTE-A Pro systems, and fifth generation systems. (5G), which may be referred to as systems based on the new radio (NR) standard. These systems may use technologies such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), or multiplexing. orthogonal frequency division with discrete Fourier transform (DFT-S-OFDM) spread spectrum coding. A multiple access wireless communication system may include a number of base stations or network access nodes, each of which simultaneously supports communications for multiple communication devices, which may otherwise be known as a "UE".

[0004] The UE may transmit one or more uplink messages to a base station and receive one or more downlink messages from the base station as part of ongoing communication. For example, in terms of uplink messages, the UE may transmit uplink messages dynamically based on control information received from the base station, based on configured transmission grants received from the base station, as part of a random access procedure with the base station, or based on a combination of the above. Each of these uplink messages may be transmitted according to one or more transmission parameters as specified by the base station. However, some transmission parameters may be difficult to detect or may require additional signaling for the UE to receive all necessary transmission parameters. Efficient technologies are required for signaling and determining transmission parameters to be used for one or more uplink messages.

The essence of the invention

[0005] The described technologies relate to advanced methods, systems, devices and equipment that support transmission of transmission parameters in signals. Typically, the described technologies provide the ability for a base station to signal a reference uplink grant configuration to a UE, wherein the reference uplink grant configuration includes a set of transmission parameters for the UE that should be used for subsequent communication with base station. In some cases, the base station may indicate one or more transmission parameters to the UE that are different from the corresponding transmission parameters in the uplink transmission grant reference configuration. The UE may then determine the need to use these one or more different transmission parameters and communicate with the base station according to the various transmission parameters. The base station may signal a reference uplink grant configuration based on a particular configuration index by indicating one or more different transmission parameters that correspond to the reference uplink grant configuration through a field that indicates that the reference an uplink grant configuration is a reference configuration for any different transmission parameters that are indicated to the UE through a dedicated reference configuration or a configured uplink grant, and when indicating one or more different transmission parameters through dependent uplink configurations communication lines. Additionally, the base station may modify, deactivate, or perform similar actions that reconfigure or deactivate the reference uplink grant configuration of the UE. In some cases, the base station may indicate a set of uplink grant configurations to the UE, and the UE may select one of the set of uplink grant configurations based on one or more different transmission parameters indicated by the base station.

[0006] Additionally or alternatively, the base station may transmit one or more sets of transmission parameters that the UE may use for a random access channel (RACH) based procedure. The UE may then select one of the transmission parameter sets and transmit a RACH message using the selected transmission parameter set. In some cases, the UE may select a set of transmission parameters based on the purpose for the RACH procedure (eg, initial access, radio resource control (RRC) renewal, time advance update, etc.), whether the RACH procedure is contentious or non-contentious, whether or not uplink control information (UCI) should be included along with the RACH message, or based on a combination of the above. Additionally, the UE may receive a dual connection (DC) mode configuration, select a set of transmission parameters based on communication with the primary cell (PCell) or secondary cell (SCell) of the DC configuration, and transmit a RACH message to the corresponding cell using the selected set of transmission parameters . In some cases, the UE may also receive a timing advance parameter and an alignment timer from the base station, with the UE transmitting a RACH message based on when the alignment timer expires.

[0007] Example 1: A wireless communication method in a UE is described. The method may include: identifying, at the UE, an uplink transmission grant reference configuration including a set of transmission reference parameters for subsequent communication in one bandwidth part (BWP); receiving, in the UE, at least one transmission parameter that is different from the corresponding transmission parameter from the set of reference transmission parameters in the reference uplink transmission permission configuration; determining whether to use at least one transmission parameter instead of a corresponding transmission parameter from the set of reference transmission parameters for subsequent communication in one BWP; and exchanging data using the at least one transmission parameter.

[0008] Example 2: Wireless communication equipment in a UE is described. The equipment may include a processor, a memory coupled to the processor, and instructions stored in the memory. Instructions may be executed by the processor to instruct the equipment to: identify, in the UE, a reference uplink transmission grant configuration including a set of reference transmission parameters for subsequent communication in one BWP; receive, in the UE, at least one transmission parameter that is different from the corresponding transmission parameter from the set of reference transmission parameters in the reference uplink transmission permission configuration; determine whether to use at least one transmission parameter instead of a corresponding transmission parameter from the set of reference transmission parameters for subsequent communication in one BWP; and communicate using at least one transfer parameter.

[0009] Example 3: Other wireless communication equipment in the UE is described. The equipment may include: means for identifying, in the UE, an uplink transmission grant reference configuration including a set of transmission reference parameters for subsequent communication in one BWP; receiving, in the UE, at least one transmission parameter that is different from the corresponding transmission parameter from the set of reference transmission parameters in the reference uplink transmission permission configuration; determining whether to use at least one transmission parameter instead of a corresponding transmission parameter from the set of reference transmission parameters for subsequent communication in one BWP; and exchanging data using at least one transmission parameter.

[0010] Example 4: A non-transitory computer-readable medium storing code for wireless communication in a UE is described. The code may include instructions executed by the processor to: identify, at the UE, an uplink transmission grant reference configuration including a set of transmission reference parameters for subsequent communication in one BWP; receive, in the UE, at least one transmission parameter that is different from the corresponding transmission parameter from the set of reference transmission parameters in the reference uplink transmission permission configuration; determine whether to use at least one transmission parameter instead of a corresponding transmission parameter from the set of reference transmission parameters for subsequent communication in one BWP; and communicate using at least one transmission parameter.

[0011] Example 5: In some examples of the method, equipment, and non-transitory computer-readable media described herein, identifying an uplink grant reference configuration may include operations, features, means, or instructions for receiving one or more reference configurations uplink transmission grants with a reference configuration index for each uplink transmission grant reference configuration, wherein the at least one transmission parameter indicates one reference configuration index for determining whether to use the at least one transmission parameter instead of the corresponding transmission parameter from set of reference transmission parameters.

[0012] Example 6: In some examples of the method, equipment, and non-transitory computer-readable media described herein, identifying an uplink transmission grant reference configuration may include operations, features, means, or instructions for receiving a transmission grant reference configuration on the uplink with a field that indicates that the uplink grant reference configuration may be used to determine whether to use at least one transmit parameter instead of the corresponding transfer parameter from the set of transmit reference parameters after the uplink grant reference configuration the uplink transmission can be received.

[0013] Example 7: In some examples of the method, equipment, and non-transitory computer-readable media described herein, identifying an uplink grant reference configuration may include operations, features, means, or instructions for receiving a dedicated uplink reference configuration communication, wherein at least one transmission parameter may be determined for use instead of a corresponding transmission parameter based on the dedicated uplink configuration; and activating the configured type one or type two transmission grant based on the upper layer configured uplink transmission grant in the dedicated uplink reference configuration.

[0014] Example 8: In some examples of the method, equipment, and non-transitory computer-readable media described herein, a dedicated uplink reference configuration may include operations, features, means, or instructions for receiving an uplink transmission permission configuration for subsequent communication, wherein the uplink transmission grant configuration includes an upper-level configured uplink transmission grant without transmission parameters; and activating the configured type two transmission grant based on receiving the upper layer configured uplink transmission grant without transmission parameters.

[0015] Example 9: Certain examples of the method, equipment, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for receiving an uplink transmission permission configuration for subsequent communication, wherein the permission configuration for uplink transmission includes an upper-level configured uplink transmission permission; and activating the configured type one transmission grant based on receiving the upper layer configured uplink transmission grant.

[0016] Example 10: In some examples of the method, equipment, and non-transitory computer-readable media described herein, identifying a reference uplink grant configuration may include operations, features, means, or instructions for receiving the configured uplink grant. an uplink including a reference configuration of uplink transmission permissions; and receiving, in the dependent uplink configuration, at least one transmission parameter, which may be different from a corresponding transmission parameter from the set of reference transmission parameters in the reference uplink transmission permission configuration.

[0017] Example 11: Certain examples of the method, equipment, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for receiving a modification to an uplink transmission grant reference configuration, determining whether or not or not to apply a modification to at least one transmission parameter, which may be different from the corresponding transmission parameter from the set of reference transmission parameters in the reference uplink transmission permission configuration; and modifying the at least one transmission parameter based on the determination.

[0018] Example 12: Certain examples of the method, equipment, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for disabling at least one transmission parameter, an uplink transmission permission reference configuration connections or their combinations based on modification techniques.

[0019] Example 13: Certain examples of the method, equipment, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for reconfiguring at least one transmission parameter based on receiving the modification.

[0020] Example 14: Some examples of the method, equipment, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for receiving an indication to deactivate an uplink transmission permission reference configuration; determining whether or not to deactivate the at least one transmission parameter; and deactivating the at least one transmission parameter based on the determination.

[0021] Example 15: Certain examples of the method, equipment, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for combining at least one transmission parameter and a reference set of transmission parameters based on indicator reception to deactivate the uplink grant reference configuration; and exchanging data using a combination of at least one transmission parameter and a reference set of transmission parameters.

[0022] Example 16: Certain examples of the method, equipment, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for receiving an uplink transmission grant reference configuration including a set of reference transmission parameters; determining a difference between at least one transmission parameter and a set of reference transmission parameters; identifying an additional transmission parameter based on the determined difference; and exchanging data using the additional transmission parameter and the at least one transmission parameter.

[0023] Example 17: In some examples of the method, equipment, and non-transitory computer-readable media described herein, identifying a reference uplink grant configuration may include operations, features, means, or instructions for receiving the uplink grant configuration. an uplink, wherein the uplink grant configuration includes a set of configured uplink grants; and selecting one of the set of configured uplink transmission grants from the configuration of uplink transmission grants based on the indicator received in conjunction with the at least one transmission parameter.

[0024] Example 18: In some examples of the method, equipment, and non-transitory computer-readable media described herein, identifying a reference uplink transmission permission configuration may include operations, features, means, or instructions for receiving a set of transmission permission configurations on an uplink, wherein each set of uplink grant configurations includes one of the set of configured uplink grants; and selecting one of the set of configured uplink transmission grants from the set of uplink transmission grant configurations based on the indicator received in conjunction with the at least one transmission parameter.

[0025] Example 19: In some examples of the method, equipment, and non-transitory computer-readable media described herein, determining whether to use at least one transmission parameter instead of a corresponding transmission parameter from a set of reference transmission parameters may include operations, features, means, or instructions for identifying a frequency allocation parameter associated with the at least one transmission parameter, wherein the at least one transmission parameter may be used in place of a corresponding transmission parameter from a set of reference transmission parameters for a portion of one BWP based on the frequency allocation parameter.

[0026] Example 20: In some examples of the method, equipment, and non-transitory computer-readable media described herein, determining whether to use at least one transmission parameter instead of a corresponding transmission parameter from a set of reference transmission parameters may include operations, features, means, or instructions for identifying a demodulation reference signal (DMRS) parameter with at least one transmission parameter, wherein the at least one transmission parameter may be used in place of a corresponding transmission parameter from a set of transmission reference parameters for a portion of one BWP based on the DMRS parameter.

[0027] Example 22: In some examples of the method, equipment, and non-transitory computer readable media described herein, the uplink grant reference configuration includes at least one of a modulation and coding scheme (MCS), a transport block size (TBS), power control parameters, non-orthogonal multiple access (NOMA) spreading factor, or a combination thereof.

[0028] Example 23: In some examples of the method, equipment, and non-transitory computer-readable media described herein, a reference configuration of uplink transmission grants may be identified through RRC signaling, system information block (SIB) transmissions, or specified configurations for U.E.

[0029] Example 24: In some examples of the method, equipment, and non-transitory computer-readable media described herein, at least one transmission parameter, which may be different from the corresponding transmission parameter of a reference signal set, includes a time resource allocation, a frequency resource allocation, A DMRS port, a DMRS scrambling number, a DMRS identifier, a DMRS and physical uplink shared channel (PUSCH) rate matching parameter, a ratio of traffic signal power to pilot signal power, or a combination thereof.

[0030] Example 25: A wireless communication method in a UE is described. The method may include receiving, at the UE, a set of transmission parameter sets for a RACH procedure, wherein each set of transmission parameter sets differs in at least one transmission parameter; selecting, at the UE, a transmission parameter set from the set of transmission parameter sets for transmitting the RACH message of the RACH procedure; and transmitting, to the base station, the RACH message using the selected set of transmission parameters.

[0031] Example 26: Wireless communication equipment in a UE is described. The equipment may include a processor, a memory coupled to the processor, and instructions stored in the memory. Instructions may be executed by the processor to instruct the equipment to receive, at the UE, a set of transmission parameter sets for a RACH procedure, wherein each set of transmission parameter sets differs in at least one transmission parameter; select, at the UE, a transmission parameter set from the set of transmission parameter sets for transmitting the RACH message of the RACH procedure; and transmit, to the base station, the RACH message using the selected set of transmission parameters.

[0032] Example 27: Other wireless communication equipment in the UE is described. The equipment may include means for receiving, at the UE, a set of transmission parameter sets for a RACH procedure, wherein each set of transmission parameter sets differs in at least one transmission parameter; selecting, at the UE, a transmission parameter set from the set of transmission parameter sets for transmitting the RACH message of the RACH procedure; and transmitting, to the base station, the RACH message using the selected set of transmission parameters.

[0033] Example 28: A non-transitory computer-readable medium storing code for wireless communication in a UE is described. The code may include instructions executed by a processor to receive, at the UE, a set of transmission parameter sets for a RACH procedure, wherein each set of transmission parameter sets differs in at least one transmission parameter; select, at the UE, a transmission parameter set from the set of transmission parameter sets for transmitting the RACH message of the RACH procedure; and transmit, to the base station, the RACH message using the selected set of transmission parameters.

[0034] Example 29: In some examples of the method, equipment, and non-transitory computer-readable media described herein, selecting a set of transmission parameters may include operations, features, means, or instructions for identifying the target of a RACH procedure; and selecting a set of transmission parameters based on the identified target.

[0035] Example 30: In some examples of the method, equipment, and non-transitory computer readable media described herein, the target of a RACH procedure includes at least one of an initial access procedure, an RRC renewal procedure, a time advance update procedure, or a combination thereof. .

[0036] Example 31: In some examples of the method, equipment, and non-transitory computer readable media described herein, selecting a set of transmission parameters may include operations, features, means, or instructions for identifying whether a RACH procedure may be competitive or non-competitive, and selecting a set of transmission parameters based on the identified competitive or non-contentious RACH procedure.

[0037] Example 32: In some examples of the method, equipment, and non-transitory computer-readable media described herein, selecting a set of transmission parameters may include operations, features, means, or instructions for identifying a UCI that is to be transmitted in a RACH message; and selecting a set of transmission parameters based on the transmission of the UCI, whether the UCI can be carried on PUSCH or PUCCH, the PUCCH format used to carry the UCI, the modulation order of the UCI, the size of the UCI, or a combination thereof.

[0038] Example 33: Certain examples of the method, equipment, and non-transitory computer readable media described herein may further include operations, features, means, or instructions for receiving a configuration for DC communication with a PCell and a SCell, selecting a PCell or SCell for RACH procedures; selecting a set of transmission parameters for transmitting the RACH message based on which of the PCell or SCell can be selected; and transmitting the RACH message to the selected PCell or SCell using the selected set of transmission parameters.

[0039] Example 34: In some examples of the method, equipment, and non-transitory computer-readable media described herein, a PCell or SCell may be selected based on quality of service, the result of a listen-before-broadcast (LBT) procedure, interference measurement, requirements by coating or a combination thereof.

[0040] Example 35: Certain examples of the method, equipment, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for indicating a selected PCell or SCell using a preamble for a RACH message, a DMRS for a RACH -messages, RACH resources for the RACH message, or a combination thereof.

[0041] Example 36: Certain examples of the method, equipment, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for receiving a timing advance parameter and an alignment timer; canceling one or more transmissions based on the timing advance parameter and the alignment timer; and transmitting uplink data with the RACH message after the overlap timer expires.

[0042] Example 37: Certain examples of the method, equipment, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for receiving a second timer that indicates a time window after the alignment timer expires, wherein the uplink data may be transmitted using a RACH message within a time window.

[0043] Example 38: In some examples of the method, equipment, and non-transitory computer readable media described herein, the RACH procedure includes a two-step RACH procedure.

[0044] Example 39: In some examples of the method, equipment, and non-transitory computer-readable media described herein, a set of transmission parameter sets for a RACH procedure may be received via RRC signaling, SIB transmission, or specified configurations for the UE.

[0045] Example 40: In some examples of the method, equipment, and non-transitory computer readable media described herein, at least one transmission parameter includes a RACH preamble for the RACH message, time and frequency resources for the RACH message, DMRS parameters or a combination of them.

[0046] Example 41: A wireless communication method in a base station is described. The method may include transmitting, to the UE, an uplink transmission grant reference configuration including a set of transmission reference parameters for subsequent communication in one BWP; transmitting, to the UE, at least one transmission parameter that is different from the corresponding transmission parameter from the set of reference transmission parameters in the reference uplink transmission permission configuration; and communicating with the UE using the at least one transmission parameter.

[0047] Example 42: Wireless communication equipment in a base station is described. The equipment may include a processor, a memory coupled to the processor, and instructions stored in the memory. Instructions may be executed by the processor to instruct the equipment to transmit, to the UE, an uplink transmission grant reference configuration including a set of transmission reference parameters for subsequent communication in one BWP; transmit, to the UE, at least one transmission parameter that is different from the corresponding transmission parameter from the set of reference transmission parameters in the reference uplink transmission permission configuration; and communicate with the UE using at least one transmission parameter.

[0048] Example 43: Other wireless communication equipment in a base station is described. The equipment may include means for transmitting, to the UE, a reference configuration of uplink transmission grants including a set of reference transmission parameters for subsequent communication in one BWP; transmitting, in the UE, at least one transmission parameter that is different from the corresponding transmission parameter from the set of reference transmission parameters in the reference uplink transmission permission configuration; and communicating with the UE using at least one transmission parameter.

[0049] Example 44: A non-transitory computer-readable medium storing a code for wireless communication in a base station is described. The code may include instructions executed by the processor to transmit, to the UE, an uplink transmission grant reference configuration including a set of transmission reference parameters for subsequent communication in one BWP; transmit, to the UE, at least one transmission parameter that is different from the corresponding transmission parameter from the set of reference transmission parameters in the reference uplink transmission permission configuration; and communicate with the UE using at least one transmission parameter.

[0050] Example 45: In some examples of the method, equipment, and non-transitory computer-readable media described herein, transmitting an uplink grant reference configuration may include operations, features, means, or instructions for transmitting one or more reference configurations uplink transmission grants with a reference configuration index for each uplink transmission grant reference configuration, wherein the at least one transmission parameter includes an indicator of one reference configuration index for the UE to identify the at least one transmission parameter, which may differ from the corresponding transfer parameter from the set of reference transfer parameters.

[0051] Example 46: In some examples of the method, equipment, and non-transitory computer-readable medium described herein, transmitting a reference transmission permission configuration on an uplink may include operations, features, means, or instructions for transmitting a reference transmission permission configuration on the uplink with a field that indicates that the uplink transmission grant reference configuration may be used by the UE to identify at least one transmission parameter instead of the corresponding transmission parameter from the set of transmission reference parameters after the grant reference configuration on uplink transmission can be transmitted.

[0052] Example 47: In some examples of the method, equipment, and non-transitory computer-readable media described herein, transmitting an uplink grant reference configuration may include operations, features, means, or instructions for transmitting a dedicated uplink reference configuration communication, wherein the at least one transmission parameter may be identified by the UE for use in place of the corresponding transmission parameter based on the dedicated uplink configuration.

[0053] Example 48: Certain examples of the method, equipment, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for transmitting an upper-level configured uplink grant on a dedicated reference signal , wherein the upper layer configured uplink transmission grant activates the configured type one transmission grant for the UE.

[0054] Example 49: In some examples of the method, equipment, and non-transitory computer-readable media described herein, transmitting a reference uplink grant configuration may include operations, features, means, or instructions for transmitting the configured uplink grant. uplink including a reference configuration of uplink transmission grants, and transmitting, in a dependent uplink configuration, at least one transmission parameter, which may be different from a corresponding transmission parameter from a set of reference transmission parameters in the reference permission configuration on uplink transmission.

[0055] Example 50: Certain examples of the method, equipment, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for transmitting a modification to a reference configuration of uplink communications permissions and data exchanges, with UE, based on modification.

[0056] Example 51: Certain examples of the method, equipment, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for reconfiguring at least one transmission parameter based on the modification; and transmitting, to the UE, at least one reconfigured transmission parameter.

[0057] Example 52: Some examples of the method, equipment, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for receiving an indication to deactivate an uplink transmission permission reference configuration; and communicating with the UE based on the indicator to deactivate the uplink transmission grant reference configuration.

[0058] Example 53: Certain examples of the method, equipment, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for transmitting, to the UE, a reference set of transmission parameters, wherein subsequent communication may be transmitted to based on the difference between at least one transmission parameter and a reference set of transmission parameters.

[0059] Example 54: In some examples of the method, equipment, and non-transitory computer-readable media described herein, transmitting an uplink grant reference configuration may include operations, features, means, or instructions for transmitting, to the UE, the configuration uplink grants, wherein the uplink grant configuration includes a reference uplink grant configuration.

[0060] Example 55: In some examples of the method, equipment, and non-transitory computer-readable media described herein, transmitting a reference uplink transmission permission configuration may include operations, features, means, or instructions for transmitting a set of transmission permission configurations on the uplink, wherein each set of uplink grant configurations includes one of the set of reference uplink grant configurations.

[0061] Example 56: In some examples of the method, equipment, and non-transitory computer readable media described herein, the uplink grant reference configuration includes at least one of MCS, TBS, power control parameters, spreading factor for NOMA or a combination thereof.

[0062] Example 57: In some examples of the method, equipment, and non-transitory computer-readable media described herein, a reference configuration of uplink transmission grants may be transmitted via RRC signaling, SIB transmission, or specified configurations to the UE.

[0063] Example 58: In some examples of the method, equipment, and non-transitory computer readable media described herein, at least one transmission parameter, which may be different from the corresponding transmission parameter of a reference signal set, includes a time resource allocation, a frequency resource allocation, DMRS port generating DMRS scrambling number, generating DMRS identifier, DMRS and PUSCH rate matching parameter, ratio of traffic signal power to pilot signal power, or a combination thereof.

[0064] Example 59: A wireless communication method in a base station is described. The method may include transmitting, to the UE, one or more sets of transmission parameters for a RACH procedure, wherein each of the sets of transmission parameters differs in at least one transmission parameter; and receiving, from the UE, a RACH message for the RACH procedure in accordance with one of the sets of transmission parameters.

[0065] Example 60: Wireless communication equipment in a base station is described. The equipment may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executed by the processor to instruct the equipment to transmit, to the UE, one or more sets of transmission parameters for a RACH procedure, each of the sets of transmission parameters distinguished by at least one transmission parameter; and receive, from the UE, a RACH message for a RACH procedure in accordance with one of the transmission parameter sets.

[0066] Example 61: Other wireless communication equipment in a base station is described. The equipment may include means for transmitting, to the UE, one or more sets of transmission parameters for a RACH procedure, each of the sets of transmission parameters distinguished by at least one transmission parameter; and receiving, from the UE, a RACH message for a RACH procedure in accordance with one of the transmission parameter sets.

[0067] Example 62: A non-transitory computer-readable medium storing a code for wireless communication in a base station is described. The code may include instructions executed by a processor to transmit, to the UE, one or more sets of transmission parameters for a RACH procedure, each of the sets of transmission parameters distinguished by at least one transmission parameter; and receive, from the UE, a RACH message for a RACH procedure in accordance with one of the transmission parameter sets.

[0068] Example 63: In some examples of the method, equipment, and non-transitory computer readable media described herein, a RACH procedure may be performed for an initial access procedure, an RRC renewal procedure, a time advance update procedure, or a combination thereof.

[0069] Example 64: In some examples of the method, equipment, and non-transitory computer readable media described herein, the RACH procedure may be a competitive RACH procedure or a non-concurrent RACH procedure.

[0070] Example 65: Some examples of the method, equipment, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for transmitting, to the UE, configurations for DC communication with PCells and SCells; and receiving the RACH message in the PCell or SCell.

[0071] Example 66: Certain examples of the method, equipment, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for receiving an indicator regarding a PCell or SCell via a RACH message preamble, a DMRS for a RACH- messages, RACH resources for a RACH message, or a combination thereof.

[0072] Example 67: Some examples of the method, equipment, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for transmitting, to the UE, a timing advance parameter and an alignment timer; and receiving, from the UE, uplink data with the RACH message after the co-occurrence timer expires.

[0073] Example 68: Certain examples of the method, equipment, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for transmitting a second timer that indicates a time window after the alignment timer expires, wherein the uplink data may be received with the RACH message within a time window.

[0074] Example 69: In some examples of the method, equipment, and non-transitory computer readable media described herein, the RACH procedure includes a two-step RACH procedure.

[0075] Example 70: In some examples of the method, equipment, and non-transitory computer-readable media described herein, a set of transmission parameter sets for a RACH procedure may be transmitted via RRC signaling, SIB transmission, or specified configurations to the UE.

[0076] Example 71: In some examples of the method, equipment, and non-transitory computer readable media described herein, at least one transmission parameter includes a RACH preamble for the RACH message, time and frequency resources for the RACH message, DMRS parameters or a combination of them.

[0077] Example 72: A wireless communication method in a UE is described. The method may include: receiving a timing advance parameter and an overlap timer, wherein the alignment timer indicates a time window during which the timing advance parameter is effective for transmissions over the data link; determining that the time window has expired; and transmitting the data message over the data channel after expiration of the time window, based at least in part on transmitting the data message with a random access preamble of the random access procedure.

[0078] Example 73: Wireless communication equipment in a UE is described. The equipment may include a processor, a memory coupled to the processor, and instructions stored in the memory. Instructions may be executed by the processor to instruct the equipment to: receive a timing advance parameter and an overlap timer, the alignment timer indicating a time window during which the timing advance parameter is effective for transmissions over the data link; determine that the time window is expiring; and transmitting the data message on the data channel after expiration of the time window, based at least in part on transmitting the data message with the random access preamble of the random access procedure.

[0079] Example 74: Other wireless communication equipment in the UE is described. The equipment may include: means for receiving a timing advance parameter and an overlap timer, wherein the alignment timer indicates a time window during which the timing advance parameter is effective for transmissions over the data link; means for determining that the time window has expired; and means for transmitting the data message over the data channel after expiration of the time window, based at least in part on transmitting the data message with a random access procedure preamble.

[0080] Example 75: A non-transitory computer-readable medium storing code for wireless communication in a UE is described. The code may include instructions executable by the processor to: receive a timing advance parameter and an overlap timer, the alignment timer indicating a time window during which the timing advance parameter is effective for transmissions over the data link; determine that the time window is expiring; and transmitting the data message on the data channel after expiration of the time window, based at least in part on transmitting the data message with the random access preamble of the random access procedure.

[0081] Example 76: In some examples of the method, equipment, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for: receiving a second timer indicating a second time window during which transmissions through the data channel is active, wherein the second time window begins at a time after the expiration of the time window, and the data message is transmitted during the second time window.

[0082] Example 77: In some examples of the method, equipment, and non-transitory computer-readable media described herein, the transmission is a two-step random access procedure message A or a four-step random access procedure message 3.

Brief description of drawings

[0083] FIG. 1 illustrates an example of a system for wireless communications that supports signaling transmission parameters in accordance with aspects of the present disclosure.

[0084] FIG. 2 illustrates an example of a wireless communication system that supports signaling transmission parameters in accordance with aspects of the present disclosure.

[0085] FIG. 3A and 3B illustrate example resource allocation configurations that support signaling of transmission parameters in accordance with aspects of the present disclosure.

[0086] FIG. 4 and 5 illustrate examples of wireless communication systems that support signaling transmission parameters in accordance with aspects of the present disclosure.

[0087] FIG. 6 illustrates an example of timing alignment that supports transmission parameter signaling in accordance with aspects of the present disclosure.

[0088] FIG. 7 and 8 illustrate examples of processing flows that support signaling transmission parameters in accordance with aspects of the present disclosure.

[0089] FIG. 9 and 10 show block diagrams of devices that support signaling transmission parameters in accordance with aspects of the present disclosure.

[0090] FIG. 11 shows a block diagram of a UE communication manager that supports signaling transmission parameters in accordance with aspects of the present disclosure.

[0091] FIG. 12 shows a diagram of a system including an apparatus that supports signaling transmission parameters in accordance with aspects of the present disclosure.

[0092] FIG. 13 and 14 show block diagrams of devices that support signaling transmission parameters in accordance with aspects of the present disclosure.

[0093] FIG. 15 shows a block diagram of a base station communication manager that supports signaling transmission parameters in accordance with aspects of the present disclosure.

[0094] FIG. 16 shows a diagram of a system including an apparatus that supports signaling transmission parameters in accordance with aspects of the present disclosure.

[0095] FIG. 17-20 show flowcharts illustrating methods that support signaling transmission parameters in accordance with aspects of the present disclosure.

Detailed Description of the Invention

[0096] In some wireless communication systems, various types of messages may be transmitted between a user equipment (UE) and a base station. Transmissions from a base station to a UE may be referred to as downlink messages, and transmissions from a UE to a base station may be referred to as uplink messages. Additionally, uplink messages may include several types of uplink transmission. For example, various types of uplink transmissions may include dynamic messages (eg, dispatched via a downlink control information (DCI) message received from a base station), uplink messages initiated through configured transmission grants (eg activated by radio resource control (RRC) or DCI layer signaling to enable/disable uplink transmissions), random access channel (RACH) based procedure messages, semi-persistent uplink transmissions, uplink reference signals communications (for example, sounding reference signals (SRS)), etc. The base station may indicate transmission parameters to the UE for the corresponding type of uplink transmission through additional signaling prior to uplink transmissions (eg, through DCI messages for scheduling or activation, RRC signaling, etc.).

[0097] Traditionally, the base station may explicitly indicate all transmission parameters that the UE should use for any subsequent uplink transmissions to the base station. However, specifying all transfer parameters may not be efficient. For example, the UE may have difficulty detecting one or more transmission parameters, the base station may waste resources at the UE by signaling all transmission parameters at once, any change in the transmission parameters may result in all transmission parameters being transmitted again (e.g., including the changed transmission parameter), only one set of transmission parameters can be used for a given bandwidth portion (BWP), etc. Accordingly, efficient techniques are required to indicate transmission parameters to the UE to be used for subsequent communication with the base station.

[0098] As described herein, the base station may initially signal a reference uplink grant configuration to the UE, wherein the reference uplink grant configuration includes a set of transmission parameters for the UE to use for subsequent communication with the base station. However, the base station can then indicate one or more transmission parameters to the UE that are different from the corresponding transmission parameters in the uplink transmission grant reference configuration, eliminating the need for the base station to indicate a whole new set of transmission parameters to the UE. The UE may then determine the need to use these one or more different transmission parameters (eg, based on frequency allocation, demodulation reference signal (DMRS) parameters, or an additional indicator that corresponds to one or more different transmission parameters) and communicate with the base station according to the various parameters transfers.

[0099] The base station may signal an uplink grant reference configuration based on a particular configuration index by indicating one or more different transmission parameters through a field that indicates what the uplink grant reference configuration is a reference configuration for any different transmission parameters that are indicated to the UE through a dedicated reference configuration or through a configured uplink transmission grant, wherein one or more different transmission parameters are indicated through dependent uplink configurations. Additionally, the base station may transmit modification signals, deactivate signals, or perform similar actions that reconfigure or deactivate the reference uplink grant configuration of the UE. In some cases, the base station may indicate a set of uplink grant configurations to the UE in addition to or instead of a reference uplink grant configuration, and the UE may select one uplink grant configuration from the set of uplink grant configurations. transmitting on the uplink based on one or more different transmission parameters indicated by the base station.

[0100] Additionally or alternatively, the base station may transmit one or more sets of transmission parameters that the UE may use for the RACH procedure. The UE may then select one of the transmission parameter sets and transmit a RACH message using the selected transmission parameter set. In some cases, the UE may select a set of transmission parameters based on the purpose for the RACH procedure (eg, initial access, RRC renewal, time advance update, etc.), whether the RACH procedure is competitive or non-contentious, whether the RACH procedure should or not, uplink control information (UCI) is included along with the RACH message, or based on a combination of the above. Additionally, the UE may receive a dual connection (DC) mode configuration, select a set of transmission parameters based on communication with the primary cell (PCell) or secondary cell (SCell) of the DC configuration, and transmit a RACH message to the corresponding cell using the selected set of transmission parameters . In some cases, the UE may also receive a timing advance parameter and an alignment timer from the base station, with the UE transmitting a RACH message based on when the alignment timer expires.

[0101] Aspects of the disclosure are initially described in the context of a wireless communication system. Additionally, aspects of the disclosure are illustrated through examples of additional wireless communication systems (eg, including a DC configuration), resource allocation configurations, timing alignment, and example processing flows. Aspects of the disclosure are further illustrated by and described with reference to equipment diagrams, system diagrams, and flowcharts that relate to signaling transmission parameters.

[0102] FIG. 1 illustrates an example of a wireless communication system 100 that supports signaling transmission parameters in accordance with aspects of the present disclosure. The wireless communication system 100 includes base stations 105, UE 115, and a core network 130. In some examples, the wireless communication system 100 may be a Long Term Evolution (LTE) network, an LTE Advanced (LTE-A) network, an LTE -A Pro-network or network based on the new radio standard (NR). In some cases, wireless communications system 100 may support enhanced broadband communications, ultra-reliable (eg, mission-critical) communications, low latency communications, or communications with low-cost, low-complexity devices.

[0103] Base stations 105 may communicate wirelessly with UE 115 through one or more base station antennas. The base stations 105 described herein may include or may be referred to by those skilled in the art as a base transceiver station, radio base station, access point, radio transceiver, node B, enhanced node B (eNB), node Next-generation B or giga-node B (either of which may be referred to as a gNB), native B node, native advanced B node, or some other appropriate term. The wireless communication system 100 may include different types of base stations 105 (eg, macro cell or small cell base stations). The UEs 115 described herein may be able to communicate with various types of base stations 105 and network equipment, including macro eNBs, small cell eNBs, gNBs, relay base stations, and the like.

[0104] Each base station 105 may be associated with a specific geographic coverage area 110 in which communications with different UEs 115 are supported. Each base station 105 may provide communications coverage for a corresponding geographic coverage area 110 through communications links 125, and communications links 125 between base station 105 and UE 115 may use one or more carriers. Communication links 125 shown in wireless communication system 100 may include uplink transmissions from UE 115 to base station 105 or downlink transmissions from base station 105 to UE 115. Downlink transmissions may also be referred to as " "forward link transmissions", while uplink transmissions may also be referred to as "reverse link transmissions".

[0105] The geographic coverage area 110 for the base station 105 may be divided into sectors comprising a portion of the geographic coverage area 110, and each sector may be associated with a cell. For example, each base station 105 may provide communications coverage for a macro cell, small cell, public access point, or other cell types, or various combinations thereof. In some examples, base station 105 may be mobile and thereby provide communications coverage for a moving geographic coverage area 110. In some examples, different geographic coverage areas 110 associated with different technologies may overlap, and overlapping geographic coverage areas 110 associated with different technologies may be supported by an identical base station 105 or by different base stations 105. The wireless communication system 100 may include including, for example, a heterogeneous LTE/LTE-A or NR network in which different types of base stations 105 provide coverage for different geographic coverage areas 110.

[0106] The term "cell" means a logical communication entity used to communicate with base station 105 (eg, over a carrier), and may be associated with an identifier to distinguish between neighboring cells (eg, physical cell identifier (PCID), virtual cell identifier (VCID)) operating over the same or different carrier. In some examples, a carrier may support multiple cells, and different cells may be configured according to different types of protocols (eg, Machine Communications (MTC), Narrowband Internet of Things (NB-IoT), enhanced Mobile Broadband (eMBB), etc. .p.), which can provide access for various types of devices. In some cases, the term “cell” may refer to a portion of a geographic coverage area 110 (eg, a sector) in which an entity operates.

[0107] UEs 115 may be distributed throughout the wireless communication system 100, and each UE 115 may be fixed or mobile. UE 115 may also be referred to as a mobile device, wireless device, remote device, handheld device, or subscriber device, or some other appropriate term, and "device" may also be referred to as a module, station, terminal, or client. The UE 115 may be a personal electronic device such as a cellular phone, personal digital assistant (PDA), tablet computer, laptop computer, or personal computer. In some examples, UE 115 may also refer to a wireless subscriber station (WLL), an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or an MTC device, etc., which may be implemented in various products such as instruments, vehicles, meters, etc.

[0108] Some UEs 115, such as MTC or IoT devices, may be low-cost, low-complexity devices and may provide automated communication between machines (eg, through machine-to-machine (M2M) communications). M2M communications or MTC can refer to data communication technologies that enable devices to communicate with each other or with the base station 105 without human intervention. In some examples, M2M communications or MTC may include communications from devices that integrate sensors or meters to measure or capture information and relay that information to a central server or application program that can use the information or present the information to people interacting with a program or application. Some UEs 115 may be designed with the ability to collect information or provide automated machine behavior. Examples of use cases for MTC devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, medical monitoring, wildlife monitoring, weather and geological monitoring, fleet management and tracking, remote system data acquisition security, physical access control and transaction-based charging and payment of business services.

[0109] Some UE 115 may be configured to use operating modes that reduce power consumption, such as half-duplex communication (eg, a mode that supports one-way communication through transmit or receive, rather than through both transmit and receive simultaneously). In some examples, half-duplex communication may be performed at a reduced peak rate. Other power-saving technologies for the UE 115 include entering a power-saving "deep sleep" mode when not participating in active communications or operating in limited bandwidth (eg, according to narrowband communications). In some cases, the UE 115 may be designed to support mission-critical functions (eg, mission-critical functions), and the wireless communication system 100 may be configured to provide ultra-reliable communications for these functions.

[0110] In some cases, the UE 115 may also be able to communicate directly with other UEs 115 (eg, using a device-to-device (D2D) or peer-to-peer (P2P) protocol). One or more of a group of UEs 115 using D2D communications may be within the geographic coverage area 110 of the base station 105. Other UEs 115 in such a group may be outside the geographic coverage area 110 of the base station 105 or otherwise not be able to receive transmissions from the base station 105. In some cases, groups of UEs 115 communicating via D2D communications may use a one-to-many (1:M) system in which each UE 115 transmits to every other UE 115 in the group. In some cases, base station 105 simplifies resource scheduling for D2D communications. In other cases, D2D communication is performed between the UE 115 without the participation of the base station 105.

[0111] Base stations 105 may communicate with the core network 130 and with each other. For example, base stations 105 may communicate with core network 130 via backhaul links 132 (eg, S1, N2, N3, or other interface). Base stations 105 may communicate with each other over backhaul links 134 (eg, X2, Xn, or other interface), either directly (eg, directly between base stations 105) or indirectly (eg, through core network 130).

[0112] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an advanced packet switching (EPC) core, which may include at least one mobility management entity (MME), at least one serving gateway (S-GW), and at least one packet network gateway (PDN) (P-GW). The MME may manage non-access layer (eg, control plane) functions, such as mobility, authentication, and bearer control, for UEs 115 served by base stations 105 associated with the EPC. User IP packets can be transmitted through the S-GW, which can directly connect to the P-GW. P-GW can provide IP address allocation as well as other functions. P-GW can connect to IP services of network operators. Operator IP services may include access to the Internet, intranet(s), IP multimedia subsystem (IMS), or packet switched (PS) streaming service.

[0113] At least some network devices, such as base station 105, may include subcomponents, such as an access network entity, which may be an example of an access node controller (ANC). Each access network entity may communicate with the UE 115 through a number of other access network transmit entities, which may be referred to as a radio head, smart radio head, or transmit/receive point (TRP). In some configurations, the various functions of each access network entity or base station 105 may be distributed across different network devices (eg, radio heads and access network controllers) or consolidated into a single network device (eg, base station 105).

[0114] The wireless communication system 100 may operate using one or more frequency bands, typically in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). In general, the region from 300 MHz to 3 GHz is known as the ultra-high frequency (UHF) region or decimeter frequency band because the wavelengths vary from approximately one decimeter to one meter in length. UHF waves can be blocked or redirected by buildings and surrounding features. However, the waves can penetrate structures sufficiently to provide, via macro cell, services to UEs 115 located indoors. UHF wave transmission may be associated with smaller antennas and shorter range (e.g. less than 100 km) compared to transmission using lower frequencies and longer wavelengths of the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz .

[0115] The wireless communication system 100 can also operate in the ultra-high frequency (SHF) domain using frequency bands from 3 GHz to 30 GHz, also known as the centimeter frequency band. The SHF region includes frequency bands such as the 5 GHz industrial, scientific and medical (ISM) bands that can be used opportunistically by devices that can tolerate interference from other users.

[0116] The wireless communication system 100 may also operate in the extremely high frequency (EHF) region of the spectrum (eg, 30 GHz to 300 GHz), also known as millimeter wave band. In some examples, wireless communication system 100 may support millimeter wave (mmW) communications between UE 115 and base stations 105, and the EHF antennas of the corresponding devices may be even smaller and more closely spaced than UHF antennas. In some cases, this may simplify the use of antenna arrays in the UE 115. However, the propagation of EHF transmissions may be subject to even greater atmospheric attenuation and shorter range than SHF or UHF transmissions. The technologies disclosed in this document may be used for transmissions that use one or more different frequency regions, and the specified use of frequency bands for these frequency regions may differ depending on the country or regulatory authority.

[0117] In some cases, wireless communication system 100 may use licensed and unlicensed radio frequency spectrum bands. For example, wireless communication system 100 may use Licensed Auxiliary Access (LAA), LTE Unlicensed Spectrum (LTE-U) radio access technology, or NR technology in an unlicensed frequency band, such as the 5 GHz ISM frequency band. . When operating in unlicensed radio frequency spectrum bands, wireless devices such as base stations 105 and UE 115 may use listen-before-talk (LBT) procedures to ensure that a frequency channel is idle. before transmitting data. In some cases, operations in unlicensed frequency bands may be based on a carrier aggregation configuration in combination with component carriers operating in the licensed frequency band (eg, LAA). Operations in unlicensed spectrum may include downlink transmissions, uplink transmissions, peer-to-peer transmissions, or a combination thereof. Duplex in unlicensed spectrum can be based on frequency division duplex (FDD), time division duplex (TDD), or a combination of the two.

[0118] In some examples, base station 105 or UE 115 may be equipped with multiple antennas, which may be used to employ technologies such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO), or shaping directional patterns. For example, the wireless communication system 100 may employ a transmission scheme between a transmitting device (eg, base station 105) and a receiving device (eg, UE 115), wherein the transmitting device is equipped with multiple antennas and the receiving device is equipped with one or more antennas. MIMO communications can use multipath signal propagation to improve spectral efficiency by transmitting or receiving multiple signals through different spatial layers, which can be referred to as spatial multiplexing. Multiple signals, for example, may be transmitted by the transmitting device via different antennas or different combinations of antennas. Likewise, multiple signals may be received by a receiving device through different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry bits associated with an identical data stream (eg, an identical codeword) or with different data streams. Different spatial layers may be associated with different antenna ports used to measure channel characteristics and generate messages. MIMO technologies include single-user MIMO (SU-MIMO), in which multiple spatial layers are transmitted to an identical receiving device, and multi-user MIMO (MU-MIMO), in which multiple spatial layers are transmitted to multiple devices.

[0119] Beamforming, which may also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technology that can be used in a transmitting device or a receiving device (eg, base station 105 or UE 115) to to form or control an antenna beam (eg, a transmitted beam or a received beam) along a spatial path between a transmitting device and a receiving device. Beamforming can be achieved by combining signals transmitted through antenna elements of an antenna array such that signals propagating at particular orientations relative to the antenna array are constructively interfered with while others are destructively interfered with. Adjusting the signals transmitted through the antenna elements may involve applying, by a transmitting device or a receiving device, certain amplitude and phase offsets to the signals transmitted through each of the antenna elements associated with the device. The adjustments associated with each of the antenna elements may be specified by a set of beamforming weights associated with a particular orientation (eg, relative to a transmitter or receiver antenna array, or relative to some other orientation).

[0120] In one example, base station 105 may use multiple antennas or antenna arrays to perform beamforming operations for directional communication with UE 115. For example, certain signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted by base station 105 multiple times in different directions, which may include transmitting the signal according to different sets of beamforming weights associated with different transmission directions. Transmissions in different beam directions may be used to identify (e.g., by base station 105 or a receiving device such as UE 115) a beam direction for subsequent transmission and/or reception by base station 105.

[0121] Certain signals, such as data signals associated with a particular receiver device, may be transmitted by the base station 105 in one beam direction (eg, in the direction associated with a receiver device such as UE 115). In some examples, the beam direction associated with transmissions along one beam direction may be determined based at least in part on the signal that is transmitted in different beam directions. For example, UE 115 may receive one or more signals transmitted by base station 105 in various directions, and UE 115 may report to base station 105 an indicator regarding the signal it is receiving at the highest signal quality or other acceptable signal quality. Although these technologies are described with reference to signals transmitted in one or more directions by base station 105, UE 115 may use similar technologies to transmit signals multiple times in different directions (eg, to identify a beam direction for subsequent transmission or reception by UE 115) or to transmit a signal in one direction (for example, to transmit data to a receiving device).

[0122] A receiving device (eg, UE 115, which may be an example of a mmW receiving device) may sample multiple receive beams when receiving various signals from base station 105, such as timing signals, reference signals, beam selection signals, or other control signals . For example, a receiving device may sample multiple reception directions by receiving through different antenna subarrays, by processing received signals according to different antenna subarrays, by receiving according to different received sets of beamforming weights applied to signals received at multiple antenna elements of the antenna array, or by processing the received signals according to different received sets of beamforming weights applied to the signals received at a plurality of antenna elements of the antenna array, any of which may be referred to as "listening" according to different received beams or reception directions. In some examples, a receiving device may use a single receive beam to receive along one beam direction (eg, when receiving a data signal). A single received beam may be aligned in a beam direction determined based at least in part on listening according to various received beam directions (e.g., a beam direction determined to have the greatest signal strength, greatest signal-to-noise ratio, or otherwise acceptable signal quality based, at least in part, on listening according to multiple beam directions).

[0123] In some cases, antennas of base station 105 or UE 115 may be located in one or more antenna arrays that may support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located in an antenna assembly such as an antenna tower. In some cases, antennas or antenna arrays associated with base station 105 may be located in a variety of geographic locations. Base station 105 may have an antenna array with a number of rows and columns of antenna ports that base station 105 can use to support beamforming in communication with UE 115. Likewise, UE 115 may have one or more antenna arrays that can support various MIMO or beamforming operations.

[0124] In some cases, wireless communication system 100 may be a packet switched network that operates according to a multi-layer protocol stack. In the user plane, communications at the bearer or packet data convergence protocol (PDCP) layer can be IP-based. The radio link control (RLC) layer can perform segmentation and reassembly of packets to exchange data over logical channels. The media access control (MAC) layer can perform priority processing and multiplexing of logical channels into transport channels. The MAC layer may also use hybrid automatic retransmission request (HARQ) to provide retransmission at the MAC layer to improve link efficiency. In the control plane, the radio resource control (RRC) protocol layer may provide establishment, configuration, and maintenance of an RRC connection between UE 115 and base station 105 or core network 130 supporting radio bearers for user plane data. At the physical layer, transport channels can be converted into physical channels.

[0125] In some cases, UE 115 and base stations 105 may support data retransmissions to increase the likelihood that data is received successfully. HARQ feedback is one technique for increasing the likelihood that data is received correctly over communication link 125. HARQ may include a combination of error detection (eg, using cyclic redundancy check (CRC)), forward error correction (FEC), and retransmission (eg, automatic retransmission request (ARQ)). HARQ can improve throughput at the MAC layer in poor radio conditions (eg, signal-to-noise ratio conditions). In some cases, a wireless device may support slot-identical HARQ feedback, in which the device may provide slot-specific HARQ feedback for data received on the previous symbol in the slot. In other cases, the device may provide HARQ feedback in a subsequent slot or according to some other time slot.

[0126] Time slots in LTE or NR can be expressed in multiples of a base unit of time, which for example can mean a sampling period T _s =1/30,720,000 seconds. Communication resource time slots may be organized according to radio frames having a duration of 10 milliseconds (ms), and the frame period may be expressed as T _f =307200*T _s . Radio frames may be identified by a system frame number (SFN) ranging from 0 to 1023. Each frame may include 10 subframes numbered 0 to 9, and each subframe may have a duration of 1 ms. The subframe may further be divided into 2 slots having a duration of 0.5 ms, and each slot may contain 6 or 7 modulation symbol periods (eg, depending on the length of the cyclic prefix added to the beginning of each symbol period). Excluding the cyclic prefix, each symbol period can contain 2048 sampling periods. In some cases, a subframe may represent the smallest scheduling unit of the wireless communication system 100 and may be referred to as a transmission time interval (TTI). In other cases, the smallest scheduling unit of wireless communication system 100 may be smaller than a subframe or may be dynamically selected (eg, in shortened TTI (sTTI) packets or selected component carriers using sTTI).

[0127] In some wireless communication systems, a slot may further be divided into multiple mini-slots containing one or more symbols. In some cases, a minislot symbol or minislot may represent the smallest scheduling unit. Each symbol may vary in duration, for example depending on subcarrier spacing or operating frequency band. Additionally, some wireless communication systems may implement slot aggregation, in which multiple slots or mini-slots are aggregated together and used for communication between the UE 115 and the base station 105.

[0128] The term “carrier” refers to a set of radio frequency spectrum resources having a specified physical layer structure to support communications over communication link 125 . For example, the link carrier 125 may include a portion of the radio frequency spectrum that operates according to the physical layer channels for a given radio access technology. Each physical layer channel may carry user data, control information, or other signals. The carrier may be associated with a predefined frequency channel (e.g., an absolute RF channel number according to the Evolved Universal Mobile Communications System Terrestrial Radio Access (E-UTRA) (EARFCN) standard) and may be positioned according to a channel raster for discovery by the UE 115. The carriers may be downlink or uplink (eg, in FDD mode) or configured to carry communications in the downlink and uplink (eg, in TDD mode). In some examples, the waveforms carried on the carrier may consist of multiple subcarriers (for example, using multi-carrier modulation (MCM) technologies such as orthogonal frequency division multiplexing (OFDM) or OFDM with discrete and spread spectrum coding Fourier transform (DFT-s-OFDM)).

[0129] The carrier organization may differ for different radio access technologies (eg, LTE, LTE-A, LTE-A Pro, NR). For example, carrier communications may be organized according to TTIs or slots, each of which may include user data as well as control information or signals to support decoding of the user data. The carrier may also include dedicated transmission of receive signals (eg, timing signals or system information, etc.) and transmission of control signals that coordinates operation for the carrier. In some examples (eg, in a carrier aggregation configuration), a carrier may also have receive signaling or control signaling that coordinates operations for other carriers.

[0130] Physical channels may be multiplexed on a carrier according to various technologies. The physical control channel and the physical data channel may be multiplexed on the downlink carrier, for example, using time division multiplexing (TDM) technologies, frequency division multiplexing (FDM) technologies, or hybrid TDM-FDM technologies. In some examples, control information transmitted on a physical control channel may be distributed among different control areas in a cascaded manner (eg, between a common control area or common search space and one or more UE-specific control areas or UE-specific search spaces).

[0131] A carrier may be associated with a particular bandwidth of the radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as the "system bandwidth" of the carrier or wireless communication system 100. For example, the carrier bandwidth may be one of a certain number of predefined carrier bandwidths according to a particular radio access technology (eg, 1.4, 3, 5, 10, 15, 20, 40, or 80 MHz). In some examples, each served UE 115 may be configured to operate on portions or all of the carrier bandwidth. In other examples, some UE 115 may be configured to operate using a narrowband protocol type that is associated with a predefined portion or range (eg, a set of subcarriers or RBs) within a carrier (eg, in an "in-band" deployment of the narrowband protocol type).

[0132] In a system using MCM technologies, a resource element may consist of one symbol period (eg, the duration of one modulation symbol) and one subcarrier, where the symbol period and subcarrier spacing are inversely related. The number of bits carried by each resource element may depend on the modulation scheme (eg, the order of the modulation scheme). Thus, the more resource elements that the UE 115 receives and the higher the order of the modulation scheme, the higher the data rate may be for the UE 115. In MIMO systems, a wireless communication resource may mean a combination of an RF spectral resource, a temporal resource, and a spatial resource (e.g., spatial layers), and the use of multiple spatial layers can further increase the data rate for communication with the UE 115.

[0133] Devices of the wireless communication system 100 (eg, base stations 105 or UE 115) may have a hardware configuration that supports communication on a particular carrier band, or may be configurable to support communication on one of a set of carrier bands. In some examples, wireless communication system 100 may include base stations 105 and/or UEs 115 that support simultaneous communications via carriers associated with more than one other carrier bandwidth.

[0134] Wireless communication system 100 may communicate with UE 115 on multiple cells or carriers, a feature that may be referred to as operating in a carrier aggregation mode or multi-carrier mode. UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation can be used with FDD and TDD component carriers.

[0135] In some cases, wireless communication system 100 may use enhanced component carriers (eCC). The ECC may differ by one or more features including a wider carrier or frequency channel bandwidth, a shorter symbol duration, a shorter TTI duration, or a modified control channel configuration. In some cases, eCC may be associated with a carrier aggregation configuration or a dual connection mode configuration (eg, when multiple serving cells have a suboptimal or non-ideal backhaul link). ECC can also be configured for use in unlicensed spectrum or shared spectrum (eg, in which more than one operator is allowed to use the spectrum). An ECC characterized by wide carrier bandwidth may include one or more segments that can be used by UE 115 that do not allow monitoring of the entire carrier bandwidth or are otherwise configured to use limited carrier bandwidth (eg, to save power ).

[0136] In some cases, the eCC may use a different symbol duration from the other component carriers, which may include using a reduced symbol duration compared to the symbol durations of the other component carriers. A shorter symbol duration may be associated with increased spacing between adjacent subcarriers. A device such as UE 115 or base station 105 using eCC can transmit wideband signals (e.g., according to frequency channel or carrier bandwidths of 20, 40, 60, 80 MHz, etc.) with reduced symbol durations (e.g., 16.67 microseconds). The TTI in eCC may consist of one or more symbol periods. In some cases, the TTI duration (ie, the number of symbol periods in the TTI) may be variable.

[0137] The wireless communication system 100 may be an NR system that may use any combination of licensed, shared, and unlicensed spectrum bands, among others. Flexibility in eCC symbol length and subcarrier spacing may allow eCC to be used across multiple spectrums. In some examples, shared NR spectrum can increase spectrum efficiency and spectral efficiency, particularly through dynamic vertical (eg, frequency domain) and horizontal (eg, time domain) resource sharing.

[0138] A UE 115 attempting to access a wireless network may perform an initial cell search by detecting a primary synchronization signal (PSS) from the base station 105. The PSS may provide timing for slot synchronization and may indicate a physical layer identifier value. UE 115 may then receive a secondary synchronization signal (SSS). The SSS may provide radio frame synchronization and may provide a cell identifier value that can be combined with a physical layer identifier value to identify the cell. SSS can also provide detection of duplex mode and cyclic prefix length. Some systems, such as TDD systems, can transmit SSS but not PSS. Both PSS and SSS can be located in the central 62 and 72 subcarriers of the carrier, respectively. In some cases, base station 105 may transmit synchronization signals (eg, SSS PSS, etc.) using multiple beams, sweeping the beam across the cell's coverage area. In some cases, PSS, SSS and/or broadcast information (eg, physical broadcast channel (PBCH)) may be transmitted in different synchronization signal (SS) blocks on respective beams, and one or more SS blocks may be included in the SS packet .

[0139] After receiving the PSS and SSS, the UE 115 may receive a main information block (MIB), which may be transmitted on the PBCH. The MIB may contain system bandwidth information, SFN, and physical HARQ indicator channel (PHICH) configuration. After decoding the MIB, the UE 115 may receive one or more SIBs. For example, SIB1 may contain cell access parameters and scheduling information for other SIBs. Decoding SIB1 may enable UE 115 to receive SIB2. SIB2 may contain RRC configuration information associated with RACH procedures, paging, physical uplink control channel (PUCCH), physical uplink shared channel (PUSCH), power control, sounding reference signal (SRS) and cell barring .

[0140] After completing the initial cell synchronization, the UE 115 may decode the MIB, SIB1 and SIB2 before accessing the network. The MIB may be transmitted on the PBCH and may use the first 4 OFDMA symbols of the second slot of the first subframe of each radio frame. It can use an average of 6 RBs (72 subcarriers) in the frequency domain. The MIB carries several important pieces of information for the UE's initial access, including the downlink channel bandwidth from the RB's perspective, the PHICH configuration (duration and resource assignment), and the SFN. A new MIB may be broadcast every fourth radio frame (SFN mod 4=0) and re-broadcast every frame (10 ms). Each repetition is scrambled with a different scrambling code.

[0141] After reading the MIB (eg, a new version or copy), the UE 115 may try different phases of the scrambling code until it passes the CRC check successfully. The scrambling code phase (0, 1, 2, or 3) may enable the UE 115 to identify which of the four repetitions is received. Thus, the UE 115 can determine the current SFN by reading the SFN in the decoded transmission and adding a scrambling code phase. After receiving the MIB, the UE may receive one or more SIBs. Different SIBs can be set according to the type of system information being transmitted. A new SIB1 may be transmitted in the fifth subframe of every eighth frame (SFN mod 8=0) and rebroadcast every second frame (20 ms). SIB1 includes access information including cell ID information, which may indicate whether or not a UE is allowed to anchor in a cell. SIB1 also includes cell selection information (or cell selection parameters). Additionally, SIB1 includes scheduling information for other SIBs. SIB2 can be dynamically scheduled according to information in SIB1 and includes access information and parameters associated with common and shared channels. The SIB2 periodicity can be set to 8, 16, 32, 64, 128, 256 or 512 radio frames.

[0142] After synchronization (eg, the connecting device decodes SIB2), the connecting device may perform a random access channel (RACH)-based procedure to further establish a connection to the wireless access network through the serving device. The RACH procedure may involve transmitting, by the connecting device, a message including a RACH preamble (eg, message 1 (Msg1)) over a set of selected resources to inform the serving device of its presence. For example, the RACH preamble may be randomly selected from a set of 64 predefined sequences. This may allow the serving device to differentiate between multiple connecting devices attempting to access the system simultaneously. Additionally, the connecting device may receive synchronization in the uplink and may request resources for additional communication in Msg1. Upon receipt of Msg1 and in response to Msg1, the serving device may transmit a random access response (RAR) (eg, message 2 (Msg2)) to the connecting device, where the serving device identifies the connecting device based on the transmitted RACH preamble. Msg2 may provide uplink resource provisioning, timing advance, and cell radio network temporary identifier (C-RNTI).

[0143] The connecting device may then transmit an RRC connection request or RACH message 3 (Msg3), along with a temporary mobile subscriber identity (TMSI) (for example, if the connecting device is previously connected to an identical wireless network), or a random identifier , after taking RAR. The RRC connection request may also indicate the reason why the connecting device is connecting to the network (eg, emergency, signaling, data exchange). The serving device may respond to the connection establishment request with a contention resolution message or RACH message 4 (Msg4) addressed to the connecting device, which may provide a new C-RNTI. If the connecting device receives a contention-based collision resolution message with a valid identifier, it can proceed with the RRC establishment. If the connecting device does not receive the contention-based collision resolution message (eg, if a collision occurs with another connecting device), it may repeat the RACH process by transmitting the message with a new RACH preamble. Such messaging between the UE 115 and the random access base station 105 may be referred to as a four-stage RACH procedure.

[0144] Additionally or alternatively, UE 115 and base station 105 may perform a two-stage RACH procedure. This two-stage RACH procedure may include a first RACH message (MsgA) that the UE 115 transmits to the base station 105. This first RACH message for the two-stage RACH procedure may be comparable to a combination of Msg1 and Msg3 of the four-stage RACH procedure, as described above. Additionally, this first RACH message of the two-stage RACH procedure may also be capable of carrying a small amount of uplink data with associated RACH information (eg, RACH preamble and RRC connection establishment request). The two-stage RACH procedure may also include a second RACH message (MsgB) that the base station 105 transmits to the UE 115, which second RACH message may be comparable to a combination of Msg2 and Msg4 of the four-stage RACH procedure. For example, the second RACH message may include an RAR and a contention-based collision resolution message. Accordingly, based on the two-stage RACH procedure, the UE 115 may continue the RRC establishment so as to further communicate with the base station 105.

[0145] RACH uplink messages as described above (e.g., Msg1 and Msg3 of a four-stage RACH procedure or MsgA of a two-stage RACH procedure) may be examples of various types of uplink transmissions that the UE 115 may transmit to the core station 105. Additional examples of various types of uplink transmissions may include uplink messages that are dynamically scheduled by base station 105 (eg, via DCI messages), uplink messages that are scheduled through a configured type 1 transmission grant. (eg, enabled via RRC signaling), uplink messages dispatched via configured Type 2 transmit grant (eg, via DCI messages to enable/disable uplink transmissions), uplink semi-period messages, reference uplink signals (eg, SRS) or similar uplink messages. The base station 105 may indicate transmission parameters to the UE 115 for the appropriate type of uplink transmission through additional signaling prior to uplink transmissions (e.g., through DCI messages for scheduling or activation, RRC signaling, etc.) .

[0146] As discussed above, the base station 105 may indicate to the UE 115 to transmit an uplink message based on a configured Type 1 transmission grant that is activated by transmitting RRC signaling (eg, upper layer signaling). Accordingly, when the UE 115 is configured with an uplink grant via RRC signaling (eg, a configured Type 1 grant via an rrc-ConfiguredUplinkGrant message), it can transmit one or more uplink messages without receiving additional grants on transmitting on the uplink according to the configuration associated with the permission to transmit on the uplink. In some cases, the uplink grant configuration received via RRC signaling may be part of a general family of configured message grant configurations (eg, ConfiguredGrantConfig messages). Additionally, base station 105 may indicate transmission parameters with an uplink grant configuration (eg, rrc-ConfiguredUplinkGrant message, ConfiguredGrantConfig message, etc.) that UE 115 should use to transmit corresponding uplink messages. In some cases, the UE 115 may read some transmission parameters from the configuration for the uplink physical channel (eg, via a PUSCH-Config message). The transmission parameters may include a modulation and coding scheme (MCS) for uplink messages, allocation of time-frequency resources for uplink messages, power control parameters for the UE 115 to transmit uplink messages, a spreading factor (e.g., for non-orthogonal multiple access (NOMA), transport block size (TBS) and any other parameters for uplink messages.

[0147] For communications between UE 115 and base station 105, the available frequency bandwidth for communication may be partitioned into BWPs, which are subsets of the available frequency bandwidth. The BWP may represent a bandwidth over which the UE 115 can transmit and/or receive information. In traditional systems, a maximum of four (4) BWPs may be configured for the UE 115. Additionally, the UE 115 may need to monitor one active BWP at a time and transmit in one active BWP at a time (e.g., there is one active BWP at a time ). In some cases, UE 115 may be configured with one uplink grant configuration (e.g., ConfiguredGrantConfig) per BWP, which may include RRC signaling to indicate configurations for uplink messages (e.g., rrc-ConfiguredUplinkGrant). Accordingly, one set of transmission parameters (eg, TBS, MCS, power control, spreading factor, etc.) may be used for uplink messages in each BWP. In some cases, uplink messages may be associated with HARQ processes (eg, acknowledgment feedback) based on corresponding configured transmission permissions. For example, multiple Type 1 HARQ processes (e.g., activated by configured Type 1 transmit grants) and one Type 2 HARQ process (e.g., activated by configured Type 2 transmit grants) may be provided to indicate uplink messages, which the UE 115 may transmit in each BWP.

[0148] In some cases, UE 115 may transmit different types of uplink messages (eg, RACH messages, configured grant transmissions, HARQ processes, etc.) more efficiently with different, corresponding sets of transmission parameters. However, based on its active BWP, an identical set of transmission parameters can be used for each uplink message. Additionally, some transmission parameters may be more difficult to detect by the UE 115 (e.g., TBS, MCS, etc.) compared to other transmission parameters that are more easily detected (e.g., DMRS parameters, time and frequency resource allocations, etc.). ). For example, the TBS for uplink messages may be calculated based on the MCS and the resource allocation for the uplink message, which requires the UE 115 to perform an additional step in order to determine the TBS. Technologies are required to provide the UE 115 with flexibility in terms of transmission parameters for uplink messages (eg, for RACH procedures enabled by configured transmission grants, etc.).

[0149] Wireless communication system 100 may support efficient technologies for using, by UE 115, easier-to-detect transmission parameters to infer hard-to-detect parameters for communication with base station 105. For example, base station 105 may provide multiple sets of transmission parameters to UE 115 (eg, including easy-to-detect and hard-to-detect transmission parameters), and the UE 115 may select from among these sets of transmission parameters to transmit the uplink message. In some cases, the easier-to-discover transmission parameters that the UE 115 may use to infer difficult-to-detect transmission parameters may include DMRS parameters, resources used to transmit uplink messages, or other more accessible transmission parameters for discovery by UE 115. For example, each set of transmission parameters may include a different time resource allocation, frequency resource allocation, or a combination thereof, with the UE 115 selecting a set of transmission parameters based on the resources to be used for the uplink message. The base station 105 may provide transmission parameter sets to the UE via RRC signaling or a system information block (SIB), or the transmission parameter sets may be specified configurations for the UE 115. Additionally or alternatively, the UE 115 may determine hard-to-detect transmission parameters with respect to the provided transfer parameter instead of setting it explicitly.

[0150] In some cases, multiple sets of transmission parameters may be specified for a particular uplink message (eg, for RACH message transmissions), with UE 115 selecting a set of transmission parameters based on one or more characteristics of the uplink message. Additionally or alternatively, UE 115 may be configured with a reference set of transmission parameters via a reference uplink permission configuration (e.g., a parent uplink permission configuration, a home uplink permission configuration, etc. .). Accordingly, rather than transmitting multiple sets of transmission parameters from which the UE 115 can select, the base station 105 may transmit one or more transmission parameters that differ with respect to the reference set of transmission parameters. For example, when configuring UE 115 with an additional transmission grant for one or more uplink messages, instead of sending a complete uplink transmission grant configuration (e.g., ConfiguredGrantConfig, rrc-ConfiguredUplinkGrant, or a combination thereof) for one or more uplink messages communication, the base station 105 may transmit at least one transmission parameter that is different from the corresponding transmission parameter in the uplink transmission grant reference configuration for use, by the UE 115, in transmitting one or more uplink messages. Additionally or alternatively, UE 115 may transmit a complete uplink grant configuration for one or more uplink messages. However, by transmitting different transmission parameters rather than the complete configuration of uplink transmission grants, the amount of transmitted RRC overhead information in the base station 105 and UE 115 can be reduced.

[0151] FIG. 2 illustrates an example of a wireless communication system 200 that supports signaling transmission parameters in accordance with aspects of the present disclosure. In some examples, wireless communication system 200 may implement aspects of wireless communication system 100. The wireless communication system 200 may include a base station 105-a and a UE 115-a, which may be examples of the respective base stations 105 and UE 115, respectively, as described above with reference to FIG. 1. UE 115-a may receive one or more downlink transmissions on carrier 205 from base station 105-a that indicate a transmission parameter configuration for UE 115-a to communicate with base station 105-a (eg, transmit one or more uplink messages) on carrier 225 in one active BWP. In some cases, carriers 205 and 225 may be the same carrier or may be different carriers for the respective directions of communication (eg, a carrier for downlink transmissions, a carrier for uplink transmissions, or a carrier for downlink transmissions and uplink).

[0152] Initially, UE 115-a may identify a reference uplink grant configuration 210 that includes a reference set of transmission parameters for an active BWP based on signaling from base station 105-a on carrier resources 205. In some cases, base station 105-a may transmit one or more uplink grant reference configurations 210, which UE 115-a may use to transmit uplink messages back to base station 105-a, with each grant reference configuration the uplink transmission may include a reference configuration index specific to it. Additionally or alternatively, the base station 105-a may transmit one uplink grant reference configuration 210 to the UE 115-a, which includes a field to indicate that the one uplink grant reference configuration 210 may be used as a reference for any subsequent uplink grant configurations received at UE 115-a. In other cases, a dedicated uplink grant reference configuration may be indicated to UE 115-a, wherein the dedicated uplink grant reference configuration may not directly activate configurations for uplink message transmissions from UE 115-a . Additionally or alternatively, the reference uplink grant configuration 210 may be an uplink grant configuration (eg, ConfiguredGrantConfig), and all subsequent grant configurations may be dependent grant configurations relative to the reference configuration 210 uplink transmission permissions.

[0153] As described herein, the base station 105-a may further transmit at least one different transmit parameter 215 to the UE 115-a on the resources of the carrier 205, wherein the different transmit parameter 215 is different from the corresponding transmit parameter of the reference transmit parameter set on uplink transmission grant reference configuration 210, thereby reducing the amount of RRC overhead information transmitted. Accordingly, the base station 105-a may transmit this different transmit parameter 215 instead of sending all new uplink transmission grant configurations for the various uplink messages. Both the reference uplink transmission grant configuration 210 and the configurations with different transmission parameter 215 may be transmitted to the UE 115-a via RRC signaling, SIB, according to the configurations specified in the UE 115-a, or a combination of the above.

[0154] Additionally, each different transmission parameter indicator 215 may further include an easily detectable transmission parameter that indicates where in the active BWP that UE 115-a may apply the different transmission parameter instead of the corresponding transmission parameter of the reference transmission permission configuration 210 on the uplink. For example, a different transmit parameter 215 may include frequency allocation (e.g., an easily detectable transmit parameter) in the active BWP, wherein a different transmit parameter (e.g., MCS, TBS, power control, spreading factor, etc.) is applied instead of the transmit parameters uplink grant reference configuration 210. Additionally or alternatively, the easily detectable transmission parameter may include a DMRS parameter, a ratio of traffic signal power to pilot signal power (eg, to indicate quality of service (QoS)), or a similar parameter that is more explicitly indicated and identified by the UE 115-a.

[0155] When multiple reference uplink grant configurations are transmitted to the UE 115-a as described above, the different transmit parameter 215 may include a corresponding reference configuration index for the reference uplink grant configuration 210, relative to which its transmission parameter is different. For example, each uplink grant reference configuration 210 may include all transmission parameters required for the UE 115-a to transmit a subsequent uplink message to the base station 105-a, wherein each uplink grant reference configuration 210 the uplink may also differ in at least one transmission parameter (eg, the two uplink transmission grant reference configurations 210 are not identical).

[0156] Accordingly, base station 105-a may indicate one of the uplink grant reference configurations 210 for use by UE 115-a (eg, through a corresponding reference configuration index), but with a change that is indicated by at least at least through one different transfer parameter 215. For example, base station 105-a may determine to instruct UE 115-a to use the first uplink grant reference configuration 210 with the first reference configuration index (eg, with a reference configuration index of zero (0)) but with an MCS ( or other new transmission parameters) other than the MCS or other parameters included in the first uplink transmission grant reference configuration. In this regard, when the base station 105-a transmits a different transmission parameter 215, it may first indicate at least a configuration index specific to the different transmission parameter 215 (for example, a configuration index of one (1)), a reference configuration index for reference configuration 210, uplink transmission grants and a new MCS value (or other new transmission parameters). Configuration indices specific to different transmission parameters 215 may provide multiple dependent configurations (eg, multiple different transmission parameters to be specified) for one uplink transmission grant reference configuration 210 to exist. In some cases, if the configuration index specific to the different transfer parameter 215 is not included, a default value may be assigned to the configuration based on the different transfer parameter 215 .

[0157] Additionally or alternatively, when the reference uplink grant configuration 210 includes a field indicating that it can be used as a reference for any subsequent uplink grant configurations received at the UE 115- a, the various transmission parameter 215 may not include a reference configuration index (eg, since there is one uplink transmission grant reference configuration 210). The various transfer parameter 215 may still include a configuration index specific to itself (eg, for identification purposes).

[0158] When the uplink grant reference configuration is a dedicated uplink grant reference configuration, the dedicated uplink grant reference configuration may not directly activate configurations for uplink message transmissions from the UE 115-a, as opposed to the uplink grant reference configurations 210 described above. For example, this dedicated uplink grant reference configuration may not activate a configured type 1 grant (eg, activated by RRC signaling) or be directly used by DCI activation for a configured type 2 grant. UE 115-a may be configured with a type 1 or type 2 transmit grant configured (e.g., based on whether or not the uplink transmit grant configuration contains RRC signaling), at any time, but not with both types of transmit grant configured transfer. In this regard, various options can be defined to provide one uplink grant reference configuration 210 that can be used by the configured Type 1 and Type 2 grants.

[0159] The first embodiment may include one uplink grant reference configuration 210 with RRC signaling to indicate the uplink grant configuration (eg, rrc-ConfiguredUplinkGrant messages). To use one reference uplink transmission grant configuration 210 for a configured type 2 transmission grant, the RRC signaling that is included in the transmission permission configuration indicating the different transmission parameter 215 may be explicitly empty. Otherwise, one uplink grant reference configuration 210 may be used as a type 1 configured grant. Additionally or alternatively, the second embodiment may include one uplink grant reference configuration 210 without RRC transmission -signals indicating the configuration of uplink transmission permissions. Accordingly, in order to use one reference uplink transmission grant configuration 210 for a configured transmission grant type 1, RRC signaling may be included in the transmission grant configuration indicating a different transmission parameter 215. Otherwise, one uplink grant reference configuration 210 may be used as a configured type 2 grant.

[0160] Additionally or alternatively, when the uplink grant reference configuration 210 may be an uplink grant configuration (e.g., ConfiguredGrantConfig), the base station 105-a may indicate various transfer parameter 215 (e.g., subsequent uplink grant configuration) through a dependent uplink grant configuration based on the reference uplink grant configuration 210. In this regard, the uplink grant reference configuration 210 may include an implicit indicator that it is a reference configuration based on how it is specified and the type of messaging used to indicate it. for UE 115-a (for example, via a ConfiguredGrantConfig message). However, the various transmission parameter 215 may be indicated through a transmission permissions configuration with a name of the various parameter that indicates its dependence on the reference uplink transmission permissions configuration 210. For example, the name of a different parameter may belong to an RRC subset of messages that base station 105-a may transmit to UE 115-a.

[0161] In some cases, base station 105-a may modify the uplink grant reference configuration 210 (e.g., either one or more uplink grant reference configurations 210 if multiple are configured with corresponding reference configuration indices ) and indicate the modification in UE 115-a. Accordingly, modifications may affect one or more dependent uplink configurations in UE 115-a (eg, uplink configurations indicated through various transmission parameters 215). For example, the UE 115-a may assume that all modifications made to the uplink grant reference configuration 210 by the base station 105-a apply to all dependent grants from the uplink grant reference configuration 210 communications. Additionally or alternatively, UE 115-a may assume that modifications to the uplink grant reference configuration 210 do not apply to dependent grants at all, and may use (eg, "copy") the original version of the uplink grant reference configuration 210 uplink transmission for dependent uplink configurations. In some cases, UE 115-a may assume that any dependent uplink configurations for the modified reference uplink grant configuration are now not configured (and, for example, any transmit grants for dependent uplink configurations are deactivated or are declared inoperative), based on the reception of the indicator regarding the modification. Additionally or alternatively, base station 105-a may reconfigure (eg, update) each dependent transmission grant configuration if the reference uplink transmission grant configuration 210 is modified, may reconfigure dependent transmission grant configurations that are affected by the modification, or perform a combination of the above.

[0162] The base station 105-a may also deactivate the uplink transmission grant reference configuration in some cases and transmit a deactivation indicator to the UE 115-a. For type 1 configured transfer grants, the transfer grant is deactivated by base station 105-a not configuring the associated RRC configuration (eg, rrc-ConfiguredUplinkGrant). In some cases, if the uplink grant reference configuration 210 is a dedicated uplink grant reference configuration as described above, the base station 105-a may not necessarily need to deactivate any transmit grants (eg , based on a dedicated uplink grant reference configuration not directly activating any transmit grants for uplink messages). When the base station 105-a does not configure the uplink grant reference configuration 210, the UE 115-a may assume that any dependent transmit grant configurations are also not configured (and any transmit grants for the dependent uplink configurations are deactivated or are declared ineffective). Additionally or alternatively, when the base station 105-a does not configure the uplink grant reference configuration 210, the UE 115-a may transmit (eg, "copy") transmission parameters from the original version of the uplink grant reference configuration 210 communications into dependent uplink configurations (eg, configurations that indicate at least one different transmit parameter 215), and the dependent uplink configurations may become independent transmit grants.

[0163] Based on various received signals (eg, uplink transmission grant reference configuration 210, a configuration or message that includes various transmission parameter 215, modification indicators, deactivation indicators, etc.), the UE 115- a may perform transmission parameter determination 220 to determine a set of transmission parameters that should be used to communicate with the base station 105-a on the resources of the carrier 225. For example, as described above, the configuration or message for the various transmission parameter 215 may include an easily discoverable parameter transmission (eg, resource allocation, DMRS parameter, etc.) that the UE 115-a uses to determine whether or not to use a different transmission parameter 215 instead of the corresponding transmission parameter from the reference transmission permission configuration 210 uplink. UE 115-a may initially be set to default to use a reference set of transmission parameters, as specified by the reference uplink grant configuration 210 (e.g., if the reference uplink grant configuration 210 allows direct activation of the uplink grant). uplink as described above). However, if a condition is satisfied for a different transfer parameter 215 (for example, the UE 115-a uses the corresponding resource allocation or DMRS parameter as specified with the different transfer parameter 215), the UE 115-a may use the different transfer parameter 215 instead of the corresponding parameter transmitting the reference transmission parameter set for communication with the base station 105-a, while using the rest of the reference transmission parameter set.

[0164] In some cases, instead of explicitly indicating, by the base station 105-a, a different transmission parameter 215 to the UE 115-a in an additional configuration message (eg, in additional explicit parameter sets), the UE 115-a may perform parameter determination 220 transmission and determine a different transmission parameter 215 (or, for example, additional sets of transmission parameters) based on differential relationships with respect to the transmission parameters included in the uplink transmission grant reference configuration 210. For example, the base station 105-a may indicate to the UE 115-a to transmit an uplink message through the uplink grant reference configuration 210 using a first MCS (eg, MCS3) and by scrambling the DMRS for the uplink message according to the parent scramble identifier to zero (0), wherein scrambling the DMRS according to the parent scramble identifier to zero signals the UE 115-a to use the corresponding MCS (eg, MCS3). Accordingly, if the UE 115-a identifies a parent scrambling identifier to be used for an uplink message that is different from the parent scrambling identifier indicated in the uplink grant reference configuration 210 (for example, a parent scrambling identifier of one (1) ) rather than the parent scramble identifier to zero (0)), this other parent scramble identifier may signal in UE 115-a the need to use a second, lower MCS to transmit uplink messages (eg, MCS2).

[0165] Additionally or alternatively to the technologies described above, base station 105-a may configure UE 115-a with multiple uplink grant configurations (eg, ConfiguredGrantConfigs) per BWP, multiple RRC grant configurations via an uplink (eg rrc-ConfiguredUplinkGrant) or a combination of the above. In some cases, one uplink grant configuration may include one or more RRC configurations, and base station 105-a may configure UE 115-a with one or more uplink grant configurations in the calculation on BWP. Each of the uplink transmission grant configurations may be different (eg, unique) by at least one transmission parameter (eg, a different transmission parameter 215). For example, the at least one transmission parameter may include a time and/or frequency domain resource allocation, a DMRS port, a DMRS scrambling seed number, a DMRS scrambling seed identifier, a DMRS and PUSCH rate matching parameter, a traffic signal power-to-power ratio pilot signals or a combination thereof. Accordingly, UE 115-a can select which uplink transmission grant configuration to use for communication with base station 105-a based on the identification of at least one transmission parameter that it uses for communication.

[0166] Similar to the above explanation for receiving multiple reference uplink grant configurations 210 with corresponding reference configuration indices, the UE 115-a may receive multiple reference uplink grant configurations 210 through multiple uplink grant configurations communication lines per BWP. In this regard, instead of receiving a different transmission parameter 215 in a separate configuration message, the UE 115-a may select a reference uplink transmission grant configuration 210 based on an identified transmission parameter, which may differ between multiple reference transmission grant configurations 210 uplink, and use the selected uplink grant reference configuration 210 for subsequent communication with base station 105-a.

[0167] FIG. 3A and 3B illustrate example resource allocation configurations 300 and 301, respectively, that support signaling of transmission parameters in accordance with aspects of the present disclosure. In some examples, resource allocation configurations 300 and 301 may implement aspects of wireless communication systems 100 and/or 200. Resource allocation configurations 300 and 301 may illustrate examples of various resource allocations 310 that UE 115 may use to communicate with base station 105. In some cases, as described herein, UE 115 may determine a set of transmission parameters for communication with base station 105 based on easily detectable transmission parameters (eg, resource allocations, DMRS parameters, etc.).

[0168] The resource allocation configuration 300 may include a control area 305, a first resource allocation 310-a, and a second resource allocation 310-b. Control area 305 may include resources reserved for transmitting and receiving control information for UE 115. In some cases, resource allocations 310-a and 310-b may be used for uplink messages transmitted from UE 115 to base station 105. Accordingly, UE 115 may determine one or more transmission parameters for uplink messages based on resource allocation 310 used for uplink message transmissions. As described above with reference to FIG. 2, UE 115 may receive one or more reference uplink transmission grant configurations that include a reference set of transmission parameters. However, UE 115 may then receive an indicator (eg, a subsequent configuration) of at least one transmission parameter (eg, a hard-to-detect transmission parameter) that is different from the corresponding transmission parameter in the reference transmission parameter set of the reference uplink transmission permission configuration . In this regard, UE 115 may determine the need to use the at least one different transmission parameter for uplink message transmissions based on information (eg, easily detectable transmission parameters) included in the indicator for the at least one different transmission parameter.

[0169] For example, UE 115 may receive an indication of a first MCS value (eg, MCS=4) different from a reference MCS value from a reference uplink grant configuration that may be used to transmit uplink messages to base station 105. For this indicator, the first MCS value may be associated with resource allocation 310-a. In this regard, if the UE 115 determines to transmit an uplink message in resource allocation 310-a, the UE 115 may use the first MCS value to transmit the uplink messages. Additionally, UE 115 may receive an indicator of a second MCS value (eg, MCS=2), which is also different from the reference MCS value, from the reference uplink grant configuration, which may be used to transmit uplink messages to the base link. station. However, for this indicator, the second MCS value may be associated with resource allocation 310-b. Accordingly, UE 115 may determine whether to transmit uplink messages using the second MCS value if it chooses to use resources in resource allocation 310-b.

[0170] Additionally or alternatively, UE 115 may receive multiple uplink grant configurations, as described above with reference to FIG. 1. In such cases, UE 115 may select one of uplink transmission grant configurations that includes at least one different transmission parameter based on easily discoverable transmission parameters. For example, UE 115 may use a first uplink grant configuration to transmit uplink messages in resource allocation 310-a, wherein the first uplink grant configuration includes a resource allocation indicator 310-a in addition to other transmission parameters (for example, including a specific MCS value, TBS value, spreading factor, etc.). Additionally or alternatively, UE 115 may use a second uplink grant configuration to transmit uplink messages in resource allocation 310-b, wherein the first uplink grant configuration includes a resource allocation indicator 310-b in in addition to the rest of the transfer parameters specific to it.

[0171] Resource allocation configuration 301 may represent a specific example of the UE 115 selecting at least one different transmission parameter and/or uplink transmission permission configuration for transmitting uplink messages to the base station 105 based on an easily discoverable transmission parameter. other than resource allocation. For example, the easily discoverable transmission parameter may be a DMRS scrambling identifier 315, which the UE 115 uses to determine whether a reference uplink transmission grant configuration should be used, at least one different transmission parameter, and/or a particular grant configuration on uplink transmission. As shown, the first DMRS scrambling identifier 315-a, which may further correspond to the first resource allocation 310-c, may be included with an indicator of a first MCS value that is different from the reference MCS value of the reference uplink configuration. Accordingly, UE 115 may determine whether to use this first MCS value based on the identification of the DMRS scrambling identifier 315-a (eg, through use of resource allocation 310-c) that it uses for its transmission of uplink messages. Additionally or alternatively, UE 115 may determine whether to use the second MCS value based on the identification of the DMRS scrambling identifier 315-b (eg, through use of resource allocation 310-d) that it uses for its transmission of uplink messages. Likewise, UE 115 may determine which uplink grant configuration to use based on the identification of the DMRS scrambling identifier 315 in the corresponding uplink grant configuration.

[0172] FIG. 4 illustrates an example of a wireless communication system 400 that supports signaling transmission parameters in accordance with aspects of the present disclosure. In some examples, wireless communication system 400 may implement aspects of wireless communication systems 100 and/or 200. The wireless communication system 400 may include a base station 105-b and a UE 115-b, which may be examples of the respective base stations 105 and UE 115, respectively, as described above with reference to FIG. 1-3. As shown, base station 105-a and UE 115-a may perform a two-stage RACH procedure as described above with reference to FIG. 1. Accordingly, as described herein, UE 115-a may determine a set of transmission parameters for performing a RACH procedure with base station 105-a on carrier resources 420 based on information received from base station 105-a on carrier resources 405. and based on various characteristics of the RACH procedure. Carriers 405 and 420 may be the same carrier or may be different carriers for the respective communication directions (eg, a carrier for downlink transmissions, a carrier for uplink transmissions, or a carrier for downlink and uplink transmissions ).

[0173] The base station 105-a may transmit configuration information to the UE 115-b on carrier resources 405 prior to the start of the RACH procedure. For example, base station 105-a may transmit one or more RACH transmission parameter sets 410 to UE 115-b. Accordingly, UE 115-b may use one of these RACH transmission parameter sets 410 for the subsequent two-stage RACH procedure. In some cases, base station 105-a may signal RACH transmission parameter sets to UE 115-b via the SIB. Additionally or alternatively, one or more sets of RACH transmission parameters may be specified configurations specified for the UE 115-b, and an activation signal may be included in the SIB to activate them. In some cases, base station 105-b may transmit RACH transmission parameter sets 410 to UE 115-b via an RRC configuration message (eg, when UE 115-b is in connected mode with base station 105-b) or via an RRC message -break (eg, RACH transmission parameter sets 410 may be used for a future RRC Resume message).

[0174] Each of the RACH transmit parameter sets 410 may differ in at least one transmit parameter. For example, the at least one different transmission parameter may include different RACH preambles, different RACH resources (eg, time and/or frequency resources), different DMRS parameters (eg, if the first message of a two-stage RACH procedure contains a preamble and a DMRS ), other RACH parameters or a combination of them. Accordingly, each of the different transmission parameters may be associated with a different set 410 of RACH transmission parameters. For example, a subset of RACH preambles may be associated with a RACH transmission parameter set 410, each RACH transmission parameter set 410 may correspond to a different set of RACH resources, each RACH transmission parameter set 410 may correspond to different DMRS parameters (e.g., different ports). or sequences for DMRS) or a combination thereof. Additionally or alternatively, the first message of a two-stage RACH procedure (eg, MsgA) may include a header portion with parameters for data transmission, where one or more different RACH parameter sets 410 may be more effective to carry the data transmission , or can better accommodate data transfers.

[0175] Based on the different RACH transmission parameter sets 410, the UE 115-b may perform a RACH transmission parameter set determination 415 so as to determine which RACH transmission parameter set 410 should be used for a subsequent RACH procedure. For example, the RACH procedure may be performed for various purposes (eg, RRC renewal, timing advance update, initial access, etc.), with the UE 115-a using different RACH transmission parameter sets 410 based on the reason why a RACH procedure is performed (eg, the first RACH transmission parameter set 410 is used for RRC renewal, the second RACH transmission parameter set 410 is used for timing advance update, etc.).

[0176] Additionally or alternatively, the RACH procedure may be a competitive random access (CBRA) procedure or a non-contentious random access (CFRA) procedure, in which the UE 115-b may or may not compete for RACH resources based on receiving a grant to transmission from the base station 105-b for RACH resources or not. Accordingly, UE 115-b can determine which RACH transmission parameter set 410 should be used based on whether it is a CBRA or CFRA procedure. For example, UE 115-b may use different RACH resources or a specific MCS if the RACH procedure is a CFRA procedure.

[0177] As noted above, the first message of a two-stage RACH procedure may be extended to carry UCI as well as data (eg, RACH data). This UCI may be carried on the PUSCH or PUCCH in the first message, and the PUCCH may include various formats for carrying the UCI. Accordingly, the UE 115-a may associate physical RACH (PRACH) parameters (eg, RACH preamble, RACH resources, DMRS parameters, etc.) for RACH transmission based on the characteristics of the UCI and the first RACH message to determine which RACH transmission parameter set 410 should be used. For example, UE 115-b may determine a RACH transmission parameter set 410 that should be used to transmit the first RACH message based on whether the first RACH message carries UCI or data, whether the UCI is carried on a PUCCH or PUSCH in the first RACH. message, the PUCCH format used to carry the UCI (eg, if applicable), the UCI modulation order (eg, if applicable), the UCI size (eg, if applicable), or a combination thereof. In some cases, the UCI modulation order and UCI size may be provided as a separate set of transmission parameters by base station 105-b in the SIB, via RRC signaling, or a combination thereof.

[0178] After determining which RACH transmission parameter set should be used for a RACH procedure (e.g., a two-stage RACH procedure) through RACH transmission parameter set determination 415, UE 115-b can then transmit a RACH message 425 (e.g. , the first RACH message of the two-stage RACH procedure) to the base station 105-b in the resources of the carrier 420 using certain RACH transmission parameters so as to initiate the RACH procedure. For example, UE 115-b may transmit a random access preamble selected from a subset of random access preambles associated with the RACH transmission parameter set 410, and transmit an associated information message (eg, UCI or data) according to the RACH transmission parameter set 410. Additionally or alternatively, UE 115-b may transmit a random access preamble in RACH resources (eg, RACH periods) associated with the RACH transmission parameter set 410, and transmit an associated information message (eg, UCI or data) according to the parameter set 410 RACH transmissions. Additionally or alternatively, UE 115-b may transmit a random access preamble with a DMRS parameter (eg, ports, sequences) associated with the RACH transmission parameter set 410, and transmit an associated information message (eg, UCI or data) according to the parameter set 410 RACH transmissions.

[0179] Although the two-stage RACH procedure and the first message of the two-stage RACH procedure are described with respect to wireless communication system 500, it should be understood that techniques for selecting a set of RACH transmission parameters may be extended to one or more uplink messages (e.g., Msg1 or Msg3), which the UE 115-c may transmit as part of the four-stage RACH procedure as described above.

[0180] FIG. 5 illustrates an example of a wireless communication system 500 that supports signaling transmission parameters in accordance with aspects of the present disclosure. In some examples, wireless communication system 500 may implement aspects of wireless communication systems 100, 200 and/or 400. The wireless communication system 500 may include a master base station 105-c, a secondary base station 105d, and a UE 115-c, which may be examples of the respective base stations 105 and UE 115 as described above with reference to FIG. 1-4. In some cases, master base station 105-c, secondary base station 105d, and UE 115-c may communicate according to DC configuration 510, in which UE 115-c may communicate with both base stations 105 simultaneously. The master base station 105-c may be referred to as a master cell, master cell group (MCG), PCell, serving cell, etc., and the secondary base station 105d may be referred to as a SCell, secondary cell group (SCG), etc. As described herein, the UE 115-c may determine a set of transmission parameters to be used to transmit the first message of the two-stage RACH procedure based on the selection of the master base station 105-c or the secondary base station 105d to exchange data.

[0181] Master base station 105-c may transmit DC configuration 510 in carrier resources 505 to UE 115-c. DC configuration 510 may include setup information for DC communication. For example, DC configuration 510 may indicate that the master base station 105-c may operate in the licensed radio frequency (RF) spectrum and that the secondary base station 105d may operate in the unlicensed RF spectrum. Additionally or alternatively, DC configuration 510 may indicate that the master base station 105-c can operate in lower spectrum (e.g., frequency band 1 (FR1)), thereby improving its coverage while the secondary base station station 105d may operate in higher spectrum (eg, frequency band 2 (FR2)). In some cases, the DC configuration 510 may also indicate that the master base station 105-c is equipped with an advanced receiver while the secondary base station 105d is not equipped with it.

[0182] Accordingly, the UE 115-c can then perform DC cell determination 515 to determine which of the master base station 105-c (e.g., a master cell or PCell) or the secondary base station 105d (e.g., a secondary cell or SCell) should transmit the first RACH message, for a two-stage RACH procedure, based in part on information for each base station 105 in the DC configuration 510. For example, based on the required QoS, the result of the listen before you speak procedure. (LBT) (eg, to determine whether or not RF spectrum is available for the UE 115-c prior to transmission of the first RACH message), interference measurements for one or both of the base stations 105, coverage requirements for the UE 115-c, or their combination, master base station 105-c may indicate to UE 115-c to perform two-stage RACH with master base station 105-c (eg, PCell), secondary base station 105d (eg, SCell), or both. UE 115-c may then perform RACH transmission parameter set determination 520 to determine which transmission parameters should be used to transmit the first RACH message based on the specific DC cell. For example, transmission parameters (eg, MCS, DMRS parameters, etc.) may differ depending on whether the UE 115-c performs the RACH procedure with the master base station 105-c or with the secondary base station 105d. In some cases, UE 115-c may receive one or more sets of RACH transmission parameters, as explained above with reference to FIG. 4, and then the UE 115-c may select one of the RACH transmission parameter sets for transmitting the first RACH message based on the selected base station 105 for the RACH procedure.

[0183] Additionally or alternatively, UE 115-c may select which of the PCell (eg, master base station 105-c) or SCell (eg, secondary base station 105d) to perform the two-stage RACH procedure based on the desired QoS , the LBT result, the interference measurement for one or both of the base stations 105, the coverage requirements for the UE 115-c, or a combination thereof. UE 115-c may then indicate the selected cell (e.g., a target cell or group of target cells) using the RACH preamble in the first RACH message or based on what transmission parameters are used for the first transmission of the RACH messages (e.g., DMRS parameters , used for the first RACH message, RACH resources over which the first RACH message is transmitted, etc.). Likewise, other transmission parameters for the first RACH message (eg, MCS, TBS, power control, spreading factor, etc.) may be specified based on which RACH preamble is used, the resources used for the first RACH message, DMRS parameters used for the first RACH message, or a combination thereof.

[0184] As illustrated in wireless communication system 500, UE 115-c may determine the need to perform a RACH procedure (e.g., a two-stage RACH procedure) with the secondary base station 105d through DC cell determination 515 (e.g., through an indicator from the master base station 105-c or selected in UE 115-c). Then, the UE 115-c can determine which RACH transmission parameters should be used based on communication with the secondary base station 105d during the determination of RACH transmission parameter sets 520. Accordingly, UE 115-c can then transmit a RACH message 530 (eg, the first RACH message of a two-stage RACH procedure) to the secondary base station 105d on carrier resources 525 using certain RACH transmission parameters. Although not shown, UE 115-c may determine the need to perform the RACH procedure with master base station 105-c in addition to or instead of secondary base station 105d. In this regard, the UE 115-c may determine a second set of RACH transmission parameters for communicating with the master base station 105-c. In some cases, the second set of RACH transmission parameters for communication with the master base station 105-c may be different from the set of RACH transmission parameters for communication with the secondary base station 105d (e.g., based on each base station 105 having different characteristics) , or the two sets of RACH transmission parameters may be identical (eg, based on both base stations 105 having similar characteristics).

[0185] Although the two-stage RACH procedure and the first message of the two-stage RACH procedure are described with respect to wireless communication system 500, it should be understood that techniques for selecting a set of RACH transmission parameters may be extended to one or more uplink messages (e.g., Msg1 or Msg3), which the UE 115-c may transmit as part of the four-stage RACH procedure as described above. Additionally, similar to the two-stage RACH procedure, the UE 115-c may perform a four-stage RACH procedure with the master base station 105-c, the secondary base station 105d, or both, with a set of RACH transmission parameters used to transmit the corresponding RACHs. messages may depend on which base station 105 is selected for the four-stage RACH procedure.

[0186] FIG. 6 illustrates an example of timing alignment 600 that supports signaling transmission parameters in accordance with aspects of the present disclosure. In some examples, temporal alignment 600 may implement aspects of wireless communication systems 100, 200 and/or 400. Time alignment 600 may be implemented for communication between UE 115 and base station 105, which may be examples of corresponding wireless devices as described above with reference to FIG. 1-5. In some cases, time alignment 600 may apply to any communication that occurs between UE 115 and base station 105 during TTI 605, which may span a configured amount of time (eg, one subframe, multiple subframes, slot, multiple slots, etc. .)

[0187] In some wireless communication systems (eg, NR, LTE, etc.), base station 105 may configure UE 115 with a time advance parameter and an associated time (eg, timeAlignmentTimer). Based on these timing characteristics, UE 115 may clear all configured downlink assignments and all configured uplink grants after the configured time associated with the timing advance parameter expires. Thus, UE 115 may cancel all outgoing transmissions scheduled through downlink assignments or uplink transmission grants after the configured timer expires. As shown, UE 115 may synchronously transmit any messages configured or dispatched through appropriate downlink assignments and uplink transmission grants within the synchronous transmission duration 610 of the TTI 605. Accordingly, the synchronous transmission duration 610 may be completed according to the timer 620. which may represent a configured time associated with a time advance parameter. Traditionally, after timer 620 expires, UE 115 must discard all transmissions that should occur between the expiration of timer 620 and the end of TTI 605. However, this traditional approach may result in inefficient use of resources with TTI 605.

[0188] To more efficiently utilize more TTI 605 resources, UE 115 may be allowed to transmit uplink data even after timer 620 (eg, timeAlignmentTimer) expires. For example, UE 115 may transmit uplink data using RACH message transmission 615, wherein RACH message transmission 615 may include the first message of a two-stage RACH procedure (eg, MsgA) or the third message of a four-stage RACH procedure (eg, Msg3 ). Additionally, UE 115 may be configured with a second timer 625 to allow uplink data transmission with RACH message transmission 615 within a certain time window that spans the duration between the end of timer 620 and the end of the second timer 625. Outside of this window, UE 115 may not transmit uplink data or information until synchronization is re-established with base station 105. For example, RACH message transmission 615 may be used to carry uplink data at any time until until the second timer 625 expires. Additionally, as described herein, UE 115 may determine a set of RACH transmission parameters as described above with reference to FIG. 4 and 5, to send transmission of 615 RACH messages.

[0189] FIG. 7 illustrates an example of a processing flow 700 that supports signaling transmission parameters in accordance with aspects of the present disclosure. In some examples, processing flow 700 may implement aspects of wireless communication systems 100, 200 and/or 400. The processing flow 700 may include a base station 105-e and a UE 115-d, which may be examples of the respective base stations 105 and UE 115, respectively, as described above with reference to FIG. 1-6.

[0190] At 705, UE 115-d may identify an uplink transmission grant reference configuration including a set of transmission reference parameters for subsequent communication in one BWP. In some cases, the uplink grant reference configuration may include at least one of MCS, TBS, power control parameters, spreading factor for NOMA, or a combination thereof. Additionally, the reference configuration of uplink transmission grants may be identified through RRC signaling, SIB transmission, or specified configurations for the UE 115-d.

[0191] In some cases, UE 115-d may identify a reference uplink grant configuration based on receiving, from base station 105-e, one or more reference uplink grant configurations with a reference configuration index for each uplink transmission grant reference configuration, wherein the at least one transmission parameter specifies one reference configuration index to determine whether to use the at least one transmission parameter instead of a corresponding transmission parameter from the set of reference transmission parameters. Additionally or alternatively, UE 115-d may identify a reference uplink grant configuration based on the reception, from base station 105-e, a reference uplink grant configuration with a field that indicates that the reference grant configuration on uplink transmission is used to determine whether to use at least one transmission parameter instead of the corresponding transmission parameter from the set of reference transmission parameters after the reference configuration of uplink transmission permissions is received.

[0192] In some cases, the UE 115-d may identify an uplink transmission grant reference configuration based on the reception, from the base station 105-e, of a dedicated uplink reference configuration, wherein at least one transmission parameter is determined to be used instead of a corresponding transmission parameter based on the dedicated uplink configuration, and activating a configured type one or type two transmission grant based on an upper-configured uplink transmission grant (eg, RRC transmission grant) in the dedicated uplink reference configuration communications. For example, the UE 115-d may receive an uplink grant configuration for subsequent communication, wherein the uplink grant configuration includes an upper-level configured uplink grant without transmission parameters, and activate the configured uplink grant. Type two transmission grant based on receiving an upper-level configured uplink transmission grant without transmission parameters. Additionally or alternatively, the UE 115-d may receive an uplink grant configuration for subsequent communication, wherein the uplink grant configuration includes an upper layer configured uplink grant, and activate the configured grant. to transmit type one based on receiving an upper-level configured uplink transmission grant.

[0193] Additionally or alternatively, UE 115-d may identify a reference uplink grant configuration based on the reception, from base station 105-e, of a configured uplink grant including the reference grant configuration on the uplink, and receiving, in the dependent uplink configuration, at least one transmission parameter that is different from the corresponding transmission parameter from the set of reference transmission parameters in the reference uplink transmission permission configuration.

[0194] In some cases, the UE 115-d may identify a reference uplink grant configuration based on receiving an uplink grant configuration, wherein the uplink grant configuration includes a set of configured uplink grants. uplink transmission, and selecting one of the set of configured uplink transmission permissions from the uplink transmission permission configuration based on the indicator received in conjunction with the at least one transmission parameter. Additionally or alternatively, UE 115-d may receive a set of uplink grant configurations, wherein each of the plurality of uplink grant configurations includes one of a plurality of configured uplink grants, and may select one of a set of configured uplink transmission grants of a plurality of uplink transmission grant configurations based on the indicator received in conjunction with the at least one transmission parameter.

[0195] At 710, UE 115-d may receive from base station 105-e at least one transmission parameter that is different from the corresponding transmission parameter from the set of reference transmission parameters in the uplink transmission grant reference configuration. In some cases, the at least one transmission parameter that is different from the corresponding transmission parameter of the reference signal set may include a time resource allocation, a frequency resource allocation, a DMRS port, a DMRS scrambling seed number, a DMRS seed identifier, a rate matching parameter DMRS and PUSCH, the ratio of traffic signal power to pilot signal power, or a combination of both.

[0196] At 715, the UE 115-d may determine a difference between at least one transmission parameter and a set of reference transmission parameters after receiving a reference uplink transmission grant configuration containing the set of reference transmission parameters.

[0197] At 720, the UE 115-d may determine to use at least one transmission parameter instead of the corresponding transmission parameter from the set of reference transmission parameters for subsequent communication in one BWP. In some cases, UE 115-d may identify a frequency allocation parameter associated with at least one transmission parameter, wherein the at least one transmission parameter is used instead of a corresponding transmission parameter from a set of reference transmission parameters for a portion of one BWP based on the allocation parameter frequency Additionally or alternatively, UE 115-d may identify a DMRS parameter with at least one transmission parameter, wherein the at least one transmission parameter is used in place of a corresponding transmission parameter from a set of reference transmission parameters for a portion of one portion of the DMRS-based bandwidth. parameter. In some cases, if the UE 115-d determines a difference for at least one transmission parameter, the UE 115-d can then identify an additional transmission parameter based on the determined difference.

[0198] At 725, UE 115-d may receive, from base station 105-e, a modification of the uplink transmission grant reference configuration, determine whether or not to apply the modification to at least one transmission parameter that is different from the corresponding a transmission parameter from the set of reference transmission parameters in the uplink transmission grant reference configuration, and modify the at least one transmission parameter based on the determination. In some cases, the UE 115-d may deactivate at least one transmission parameter, a reference uplink transmission grant configuration, or a combination thereof based on receiving the modification. Additionally or alternatively, the UE 115-d may reconfigure the at least one transmission parameter based on receiving the modification. In some cases, the base station 105-e may reconfigure the at least one transmission parameter based on a transmission modification in the UE 115-d of the at least one reconfigured transmission parameter.

[0199] At 730, UE 115-d may receive, from base station 105-e, an indicator to deactivate the uplink transmission grant reference configuration, determine whether or not to deactivate at least one transmission parameter, and deactivate at least one transmission parameter based on the definition. Additionally or alternatively, the UE 115-d may combine at least one transmission parameter and a reference transmission parameter set based on receipt of the indicator to deactivate the reference uplink transmission grant configuration.

[0200] At 735, UE 115-d and base station 105-e may communicate using at least one transmission parameter. In some cases, the UE 115-d and the base station 105-e may further communicate using a combination of at least one transmission parameter and a reference transmission parameter set based on deactivation of the at least one transmission parameter. Additionally or alternatively, UE 115-d and base station 105-e may communicate using an additional transmission parameter and at least one transmission parameter when a difference between at least one transmission parameter and a set of reference transmission parameters is determined.

[0201] FIG. 8 illustrates an example of a processing flow 800 that supports signaling transmission parameters in accordance with aspects of the present disclosure. In some examples, processing flow 800 may implement aspects of wireless communication systems 100, 200, 400 and/or 500. The processing flow 800 may include a base station 105-f and a UE 115-e, which may be examples of the respective base stations 105 and UE 115, respectively, as described above with reference to FIG. 1-7.

[0202] At 805, UE 115-e may receive, from base station 105-f, one or more sets of transmission parameters for a RACH procedure, wherein each of the one or more sets of transmission parameters differs in at least one transmission parameter. In some cases, the RACH procedure may include a two-step RACH procedure. Additionally, one or more sets of transmission parameters for the RACH procedure are received via RRC signaling, SIB transmission, or specified configurations for the UE 115-e. In some cases, the at least one different transmission parameter may include a RACH preamble for the RACH message, time and frequency resources for the RACH message, DMRS parameters, or a combination thereof.

[0203] At 810, UE 115-e may receive, from base station 105-f, a configuration for DC communication with PCell and SCell. At 815, UE 115-e may select PCell or SCell for the RACH procedure. In some cases, PCell or SCell is selected based on QoS, LBT result, interference measurement, coverage requirements, or a combination of these.

[0204] At 820, UE 115-e may select a transmission parameter set from one or more transmission parameter sets for transmitting a RACH procedure RACH message. In some cases, the UE 115-e may identify a RACH procedure target and select a set of transmission parameters based on the identified target, wherein the RACH procedure target includes at least one of an initial access procedure, an RRC renewal procedure, a temporary update procedure advances or their combinations. Additionally or alternatively, UE 115-e may identify whether the RACH procedure is competitive or non-contentious, and select a set of transmission parameters based on the identified competitive or non-competitive RACH procedure.

[0205] In some cases, UE 115-e may identify a UCI to be carried in a RACH message and select a set of transmission parameters based on the transmission of the UCI, whether the UCI is carried on PUSCH or PUCCH, the PUCCH format used to carry UCI, UCI modulation order, UCI size, or a combination thereof. Additionally or alternatively, the UE 115-e may select a set of transmission parameters for transmitting the RACH message based on which of the PCell or SCell is selected.

[0206] At 825, UE 115-e may receive the timing advance parameter and the alignment timer and cancel one or more transmissions based on the timing advance parameter and the alignment timer.

[0207] At 830, UE 115-e may transmit, to base station 105-f, a RACH message using a selected set of transmission parameters. In some cases, the UE 115-e may transmit a RACH message to a selected PCell or SCell using a selected set of transmission parameters. Additionally or alternatively, UE 115-e may transmit uplink data with the RACH message after the overlap timer expires. In some cases, UE 115-e may receive a second timer that indicates a time window after the overlap timer expires, with uplink data transmitted with the RACH message within the time window.

[0208] FIG. 9 shows a block diagram 900 of an apparatus 905 that supports signaling transmission parameters in accordance with aspects of the present disclosure. Device 905 may be an example of aspects of UE 115 as described herein. Device 905 may include a receiver 910, a UE communication manager 915, and a transmitter 920. Device 905 may also include a processor. Each of these components may communicate with each other (eg, through one or more buses).

[0209] Receiver 910 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information associated with transmission parameter signaling, etc. ). The information may be transmitted to other components of device 905. Receiver device 910 may be an example of aspects of transceiver device 1220 described with reference to FIG. 12. Receiver 910 may use a single antenna or a set of antennas.

[0210] The UE communication manager 915 may identify, in the UE, a reference uplink transmission grant configuration including a set of reference transmission parameters for subsequent communication in one BWP. In some cases, the UE communications manager 915 may receive, at the UE, at least one transmission parameter that is different from a corresponding transmission parameter from a set of reference transmission parameters in the uplink transmission grant reference configuration. Additionally, the UE communication manager 915 may determine the need to use at least one transmission parameter instead of the corresponding transmission parameter from the set of reference transmission parameters for subsequent communication in one BWP. Accordingly, the UE communication manager 915 may communicate using at least one transmission parameter.

[0211] Additionally or alternatively, UE communications manager 915 may receive, at the UE, a set of transmission parameter sets for a RACH procedure, wherein each set of transmission parameter sets differs in at least one transmission parameter. In some cases, the UE communication manager 915 may select, at the UE, a set of transmission parameters from a set of transmission parameter sets for transmitting the RACH message of the RACH procedure. Accordingly, the UE communication manager 915 may transmit, to the base station, a RACH message using a selected set of transmission parameters. The UE communication manager 915 may be an example of aspects of the UE communication manager 1210 described herein.

[0212] The UE communication manager 915 or subcomponents thereof may be implemented in hardware, code (eg, software or firmware) executed by a processor, or any combination thereof. When implemented in code executed by a processor, the functions of the UE communication manager 915 or its subcomponents may be performed by a general purpose processor, digital signal processor (DSP), application specific integrated circuit (ASIC), field programmable gate array (FPGA), or other programmable logic device , discrete logic gate or transistor logic, discrete hardware components, or any combination of the foregoing, designed to perform the functions described in this disclosure.

[0213] The UE communication manager 915 or its subcomponents may be physically located in different positions, which includes distribution such that portions of the functions are implemented in different physical locations by one or more physical components. In some examples, UE communication manager 915 or subcomponents thereof may be a separate and distinct component in accordance with various aspects of the present disclosure. In some examples, the UE communication manager 915 or subcomponents thereof may be combined with one or more other hardware components, including, but not limited to, an input/output component, a transceiver, a network server, another computing device, one or more others the components described in the present disclosure, or a combination thereof in accordance with various aspects of the present disclosure.

[0214] Transmitting device 920 may transmit signals received from other components of wireless device 905. In some examples, transmitting device 920 may be co-located with receiving device 910 in a transceiver module. For example, transmitter device 920 may be an example of aspects of transmitter/receiver device 1220 described with reference to FIG. 12. Transmitting device 920 may use a single antenna or a set of antennas.

[0215] FIG. 10 shows a block diagram 1000 of an apparatus 1005 that supports signaling transmission parameters in accordance with aspects of the present disclosure. Device 1005 may be an example of aspects of device 905 or UE 115 as described herein. The device 1005 may include a receiving device 1010, a UE communication manager 1015, and a transmitting device 1055. The device 1005 may also include a processor. Each of these components may communicate with each other (eg, through one or more buses).

[0216] The receiving device 1010 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information associated with transmission parameter signaling, etc. ). Information may be transmitted to other components of device 1005. Receiver device 1010 may be an example of aspects of transceiver device 1220 described with reference to FIG. 12. Receiver 1010 may use a single antenna or a set of antennas.

[0217] UE communication manager 1015 may be an example of aspects of UE communication manager 915 as described herein. The UE communication manager 1015 may include an uplink transmission grant reference configuration identification module 1020, a various transmission parameter receiver 1025, a transmission parameter determination component 1030, a communication module 1035 using transmission parameters, a RACH parameter receiver 1040, a module RACH parameter selection 1045 and RACH transmitter 1050. UE communication manager 1015 may be an example of aspects of UE communication manager 1210 described herein.

[0218] Actions performed by the UE communication manager 1015, as described herein, may be implemented to achieve one or more potential benefits. One implementation may enable the UE 115 to save power and increase battery life by eliminating the need to process all of the transmission parameters that the UE 115 must use for any subsequent uplink transmissions to the base station. Another implementation may provide improved quality and reliability of services to the UE 115 because latency and the number of individual resources allocated to the UE 115 may be reduced.

[0219] The uplink transmission grant reference configuration identification module 1020 may identify, at the UE, an uplink transmission grant reference configuration including a set of transmission reference parameters for subsequent communication in one BWP.

[0220] The various transmission parameter receiver 1025 may receive, at the UE, at least one transmission parameter that is different from the corresponding transmission parameter from the set of reference transmission parameters in the uplink transmission grant reference configuration.

[0221] The transmission parameter determination component 1030 may determine whether to use at least one transmission parameter instead of a corresponding transmission parameter from a set of reference transmission parameters for subsequent communication in one BWP.

[0222] The transmission parameter communication module 1035 may communicate using at least one transmission parameter.

[0223] The RACH parameter receiver 1040 may receive, at the UE, a set of transmission parameter sets for a RACH procedure, wherein each set of transmission parameter sets differs in at least one transmission parameter.

[0224] The RACH parameter selector 1045 may select, at the UE, a transmission parameter set from a set of transmission parameter sets for transmitting the RACH message of the RACH procedure.

[0225] The RACH transmitter 1050 may transmit, to the base station, a RACH message using a selected set of transmission parameters. In some examples, RACH transmitter 1050 may transmit a random access preamble via a random access channel and transmit a data message via a traffic channel.

[0226] Transmitting device 1055 may transmit signals received from other components of wireless device 1005. In some examples, transmitting device 1055 may be co-located with receiving device 1010 in a transceiver module. For example, transmitter 1055 may be an example of aspects of transmitter/receiver 1220 described with reference to FIG. 12. The transmitter 1055 may use a single antenna or a set of antennas.

[0227] FIG. 11 shows a block diagram 1100 of a UE communication manager 1105 that supports signaling transmission parameters in accordance with aspects of the present disclosure. UE communication manager 1105 may be an example of aspects of UE communication manager 915, UE communication manager 1015, or UE communication manager 1210 described herein. The UE communications manager 1105 may include an uplink transmission grant reference configuration identification module 1110, a various transmission parameters receiver 1115, a transmission parameters determination component 1120, a transmission parameters communication module 1125, a configured transmission permissions activator 1130, a modifier 1135 reference configurations, component 1140 reference configurations deactivate component 1145 relative differences determine the component 1145, the receiving device 1150 RACH parameters, the module 1155 select RACH parameters, transmitting RACH device 1160, DC component 1165 and component 1170 time advance processing. Each of these modules can communicate, directly or indirectly, with each other (for example, through one or more buses).

[0228] The uplink transmission grant reference configuration identification module 1110 may identify, in the UE, an uplink transmission grant reference configuration including a set of transmission reference parameters for subsequent communication in one BWP. In some examples, uplink grant reference configuration module 1110 may receive one or more uplink grant reference configurations with a reference configuration index for each uplink grant reference configuration, wherein at least one transmission parameter indicates one reference configuration index for determining whether to use at least one transmission parameter instead of a corresponding transmission parameter from the set of reference transmission parameters. Additionally or alternatively, the uplink grant reference configuration identification module 1110 may receive the uplink grant reference configuration with a field that indicates that the uplink grant reference configuration is used to determine whether to use at least one transmission parameter instead of a corresponding transmission parameter from the set of reference transmission parameters after the reference uplink transmission grant configuration is received.

[0229] In some examples, uplink grant reference configuration identification module 1110 may receive a configured uplink grant including an uplink grant reference configuration. Additionally, the uplink transmission grant reference configuration identification module 1110 may receive, in the dependent uplink configuration, at least one transmission parameter that is different from the corresponding transmission parameter from the set of transmission reference parameters in the uplink transmission grant reference configuration. .

[0230] In some examples, uplink grant reference configuration identification module 1110 may receive a configuration of uplink grants, wherein the uplink grant configuration includes a set of configured uplink grants communication, and may select one of a set of configured uplink transmission grants from a configuration of uplink transmission grants based on the indicator received in conjunction with the at least one transmission parameter.

[0231] Additionally or alternatively, uplink grant reference configuration identification module 1110 may receive a set of uplink grant configurations, wherein each set of uplink grant configurations includes one of the set of configured grants. for uplink transmission, and select one of the set of configured uplink transmission permissions from the set of uplink transmission permission configurations based on the indicator received in conjunction with the at least one transmission parameter.

[0232] In some cases, the uplink grant reference configuration may include at least one of a modulation and coding scheme, transport block size, power control parameters, non-orthogonal multiple access spreading factor, or a combination thereof. Additionally or alternatively, the reference configuration of uplink transmission grants may be identified through RRC signaling, SIB transmission, or specified configurations for the UE.

[0233] The various transmission parameter receiver 1115 may receive, at the UE, at least one transmission parameter that is different from the corresponding transmission parameter from the set of reference transmission parameters in the uplink transmission grant reference configuration. In some cases, the at least one transmission parameter that is different from the corresponding transmission parameter of the reference signal set may include a time resource allocation, a frequency resource allocation, a DMRS port, a DMRS scrambling seed number, a DMRS seed identifier, a rate matching parameter DMRS and uplink physical shared channel, the ratio of the power of the traffic signals to the power of the pilot signals, or a combination thereof.

[0234] The transmission parameter determination component 1120 may determine whether to use at least one transmission parameter instead of a corresponding transmission parameter from a set of reference transmission parameters for subsequent communication in one BWP. In some examples, transmission parameter determination component 1120 may identify a frequency allocation parameter associated with at least one transmission parameter, wherein the at least one transmission parameter is used in place of a corresponding transmission parameter from a set of reference transmission parameters for a portion of one BWP based on the parameter frequency allocation. Additionally or alternatively, transmission parameter determination component 1120 may identify a DMRS parameter with at least one transmission parameter, wherein the at least one transmission parameter is used in place of a corresponding transmission parameter from a set of reference transmission parameters for a portion of one BWP based on the DMRS parameter .

[0235] The transmission parameter communication module 1125 may communicate using at least one transmission parameter.

[0236] The configured transmit grant activator 1130 may receive a dedicated uplink reference configuration where at least one transmit parameter is determined to be used instead of a corresponding transmit parameter based on the dedicated uplink configuration, and activate the configured transmit grant of type one or type two based on the upper-configured uplink transmission grant in the dedicated uplink reference configuration.

[0237] In some examples, the configured transmission grant activator 1130 may receive a configuration of uplink transmission permissions for subsequent communication, wherein the configuration of uplink transmission permissions includes an upper-level configured uplink transmission permission without transmission parameters, and activate the configured type two transmission grant based on receiving the upper-level configured uplink transmission permission without transmission parameters.

[0238] Additionally or alternatively, the configured transmission grant activator 1130 may receive a configuration of uplink transmission permissions for subsequent communication, wherein the configuration of uplink transmission permissions includes an upper-level configured uplink transmission permission , and activate the configured type one transmission grant based on receiving the upper-level configured uplink transmission grant.

[0239] Reference configuration modifier 1135 may receive a modification of the uplink grant reference configuration. In some examples, reference configuration modifier 1135 may determine whether or not to apply a modification to at least one transmission parameter that is different from a corresponding transmission parameter from a set of reference transmission parameters in the uplink transmission grant reference configuration, and may modify according to at least one transmission parameter based on the definition.

[0240] In some examples, reference configuration modifier 1135 may deactivate at least one transmission parameter, uplink transmission grant reference configuration, or a combination thereof based on receipt of the modification. Additionally or alternatively, reference configuration modifier 1135 may reconfigure at least one transmission parameter based on receiving the modification.

[0241] The reference configuration deactivation component 1140 may receive an indicator to deactivate the uplink transmission grant reference configuration, determine whether or not to deactivate at least one transmission parameter, and deactivate the at least one transmission parameter based on the determination . In some examples, reference configuration deactivation component 1140 may combine at least one transmission parameter and a reference transmission parameter set based on receiving an indicator to deactivate the uplink transmission permission reference configuration, and communicate using the combination of at least one transmission parameter and reference set of transmission parameters.

[0242] The relative difference determination component 1145 may receive an uplink transmission grant reference configuration including a set of reference transmission parameters, determine a difference between at least one transmission parameter and the set of reference transmission parameters, identify an additional transmission parameter at based on the determined difference and communicate using the additional transfer parameter and the at least one transfer parameter.

[0243] The RACH parameter receiver 1150 may receive, at the UE, a set of transmission parameter sets for a RACH procedure, wherein each set of transmission parameter sets differs in at least one transmission parameter. In some cases, the RACH procedure may include a two-step RACH procedure. Additionally, a set of transmission parameter sets for the RACH procedure may be received via RRC signaling, SIB transmission, or specified configurations for the UE. In some cases, the at least one transmission parameter may include a RACH preamble for the RACH message, time and frequency resources for the RACH message, DMRS parameters, or a combination thereof.

[0244] The RACH parameter selector 1155 may select, at the UE, a transmission parameter set from a set of transmission parameter sets for transmitting the RACH message of the RACH procedure. In some examples, RACH parameter selection module 1155 may identify a target of a RACH procedure and select a set of transmission parameters based on the identified target. In some cases, the target of the RACH procedure includes at least one of an initial access procedure, an RRC renewal procedure, a time advance update procedure, or a combination thereof. Additionally or alternatively, RACH parameter selector 1155 may identify whether the RACH procedure is competitive or non-competitive and select a set of transmission parameters based on the identified competitive or non-competitive RACH procedure.

[0245] In some cases, RACH parameter selector 1155 may identify a UCI to be carried in a RACH message and select a set of transmission parameters based on the transmission of the UCI, whether the UCI is carried on a physical uplink shared channel or on a physical the uplink control channel, the format of the uplink physical control channel used to carry the UCI, the modulation order of the UCI, the size of the UCI, or a combination thereof.

[0246] The RACH transmitter 1160 may transmit, to the base station, a RACH message using a selected set of transmission parameters.

[0247] DC component 1165 may be configured to communicate in dual mode with a primary cell and a secondary cell, select a primary cell or a secondary cell for the RACH procedure, select a set of transmission parameters for transmitting the RACH message based on which of the primary cell or secondary cell is selected, and transmit the RACH message to the selected primary cell or secondary cell using the selected set of transmission parameters. In some examples, DC component 1165 may indicate the selected primary cell or secondary cell using a preamble for the RACH message, DMRS for the RACH message, RACH resources for the RACH message, or a combination thereof. In some cases, a primary cell or a secondary cell may be selected based on quality of service, the result of a listen-before-send procedure, interference measurements, coverage requirements, or a combination thereof.

[0248] The timing advance processing component 1170 may receive a timing advance parameter and an alignment timer. In some examples, the time advance processing component 1170 may determine that the time window is expiring. Additionally, the time advance processing component 1170 may transmit a data message over the data link after the time window has expired. In some examples, the timing advance processing component 1170 may receive a second timer indicating a second time window.

[0249] FIG. 12 shows a diagram of a system 1200 including an apparatus 1205 that supports signaling transmission parameters in accordance with aspects of the present disclosure. Device 1205 may be an example of or include components of device 905, device 1005, or UE 115, as described herein. The device 1205 may include components for bidirectional voice and data transmission, including components for transmitting and receiving communications, including a UE communication manager 1210, an input/output controller 1215, a transceiver 1220, an antenna 1225, a storage device 1230 and processor 1240. These components may support electronic communication via one or more buses (eg, bus 1245).

[0250] The UE communication manager 1210 may identify, in the UE, a reference uplink transmission grant configuration including a set of reference transmission parameters for subsequent communication in one BWP. In some cases, the UE communications manager 1210 may receive, at the UE, at least one transmission parameter that is different from a corresponding transmission parameter from a set of reference transmission parameters in the uplink transmission grant reference configuration. Additionally, the UE communication manager 1210 may determine whether to use at least one transmission parameter instead of the corresponding transmission parameter from the set of reference transmission parameters for subsequent communication in one BWP. Accordingly, the UE communication manager 1210 may communicate using at least one transmission parameter.

[0251] Additionally or alternatively, UE communication manager 1210 may receive, at the UE, a set of transmission parameter sets for a RACH procedure, wherein each set of transmission parameter sets differs in at least one transmission parameter. In some cases, the UE communication manager 1210 may select, at the UE, a set of transmission parameters from a set of transmission parameter sets for transmitting the RACH message of the RACH procedure. Accordingly, the UE communication manager 1210 may transmit, to the base station, a RACH message using a selected set of transmission parameters.

[0252] I/O controller 1215 may control input and output signals for device 1205. I/O controller 1215 may also control peripheral devices not integrated into device 1205. In some cases, I/O controller 1215 may represent a physical connection or port for external peripheral device. In some cases, the I/O controller 1215 may use an operating system such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS/2®, UNIX®, LINUX®, or other known operating system. In other cases, I/O controller 1215 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, the I/O controller 1215 may be implemented as part of the processor. In some cases, the user may interact with the device 1205 through the I/O controller 1215 or through hardware components controlled by the I/O controller 1215.

[0253] Transceiver 1220 may communicate bidirectionally through one or more antennas, wired or wireless communication links, as described above. For example, transceiver device 1220 may represent a wireless transceiver device and may communicate bidirectionally with another wireless transceiver device. Transceiver device 1220 may also include a modem to modulate packets and provide modulated packets to antennas for transmission and demodulate packets received from antennas.

[0254] In some cases, a wireless device may include a single antenna 1225. However, in some cases, a device may have more than one antenna 1225, which may allow multiple wireless transmissions to be transmitted or received in parallel.

[0255] Storage device 1230 may include random access memory (RAM) and read only memory (ROM). Memory device 1230 may store computer-readable computer-executable code 1235 including instructions that, when executed, instruct the processor to perform various functions described herein. In some cases, storage device 1230 may include, among other things, a basic input/output system (BIOS), which may control the basic operation of hardware or software, such as interaction with peripheral components or devices.

[0256] Processor 1240 may include an intelligent hardware device (e.g., a general purpose processor, DSP, central processing unit (CPU), microcontroller, ASIC, FPGA, programmable logic device, discrete logic gate or transistor logic component, discrete hardware component, or any combination of the above). In some cases, processor 1240 may be configured to control the storage device matrix using a storage device controller. In other cases, a storage device controller may be integrated into processor 1240. Processor 1240 may be configured to execute machine-readable instructions stored in a storage device (e.g., memory device 1230) to instruct device 1205 to perform various functions (e.g., functions or tasks , supporting transmission of transmission parameters in signals).

[0257] Based on the improved transmission of transmission parameters in the signals, processor 1240 can efficiently determine transmission parameters for subsequent communication with the base station. Because of this, when transmission parameters are received, the processor may be prepared to respond more efficiently by reducing the increase in processing power.

[0258] Code 1235 may include instructions for implementing aspects of the present disclosure, including instructions for supporting wireless communications. The code 1235 may be stored in a non-transitory computer-readable medium, such as a system storage device or other type of storage device. In some cases, code 1235 may not be directly executable by processor 1240, but may instruct a computer (eg, when compiled and executed) to perform functions described herein.

[0259] FIG. 13 shows a block diagram 1300 of an apparatus 1305 that supports signaling transmission parameters in accordance with aspects of the present disclosure. Device 1305 may be an example of aspects of base station 105 as described herein. Device 1305 may include a receiver 1310, a base station communications manager 1315, and a transmitter 1320. Device 1305 may also include a processor. Each of these components may communicate with each other (eg, through one or more buses).

[0260] Receiver 1310 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information associated with transmission parameter signaling, etc. ). The information may be transmitted to other components of device 1305. Receiver device 1310 may be an example of aspects of transceiver device 1620 described with reference to FIG. 16. Receiver 1310 may use a single antenna or a set of antennas.

[0261] The base station communications manager 1315 may transmit, to the UE, a reference uplink transmission grant configuration including a set of reference transmission parameters for subsequent communication in one BWP. Additionally, the base station communications manager 1315 may transmit to the UE at least one transmission parameter that is different from the corresponding transmission parameter from the set of reference transmission parameters in the uplink transmission grant reference configuration. In some cases, the base station communication manager 1315 may communicate with the UE using at least one transmission parameter.

[0262] Additionally or alternatively, the base station communication manager 1315 may also transmit, to the UE, a set of transmission parameter sets for the RACH procedure, wherein each set of transmission parameter sets differs in at least one transmission parameter. In some cases, the base station communication manager 1315 may receive, from the UE, a RACH message for a RACH procedure in accordance with one of a set of transmission parameter sets. The base station communication manager 1315 may be an example of aspects of the base station communication manager 1610 described herein.

[0263] The base station communication manager 1315 or subcomponents thereof may be implemented in hardware, code (eg, software or firmware) executed by a processor, or any combination thereof. When implemented in code executed by a processor, the functions of the base station communication manager 1315 or its subcomponents may be performed by a general purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination of the foregoing. designed to perform the functions described in this disclosure.

[0264] The base station communication manager 1315 or subcomponents thereof may be physically located in different positions, which includes distributing such that portions of the functions are implemented in different physical locations by one or more physical components. In some examples, base station communications manager 1315 or subcomponents thereof may be a separate and distinct component in accordance with various aspects of the present disclosure. In some examples, base station communications manager 1315 or subcomponents thereof may be combined with one or more other hardware components, including, but not limited to, an input/output component, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof in accordance with various aspects of the present disclosure.

[0265] Transmitting device 1320 may transmit signals received from other components of wireless device 1305. In some examples, transmitting device 1320 may be co-located with receiving device 1310 in a transceiver module. For example, transmitter device 1320 may be an example of aspects of transmitter/receiver device 1620 described with reference to FIG. 16. Transmitting device 1320 may use a single antenna or a set of antennas.

[0266] FIG. 14 shows a block diagram 1400 of an apparatus 1405 that supports signaling transmission parameters in accordance with aspects of the present disclosure. Device 1405 may be an example of aspects of device 1305 or base station 105 as described herein. Device 1405 may include a receiver 1410, a base station communications manager 1415, and a transmitter 1445. Device 1405 may also include a processor. Each of these components may communicate with each other (eg, through one or more buses).

[0267] Receiver 1410 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information associated with transmission parameter signaling, etc. ). The information may be transmitted to other components of device 1405. Receiver device 1410 may be an example of aspects of transceiver device 1620 described with reference to FIG. 16. Receiver 1410 may use a single antenna or a set of antennas.

[0268] Base station communication manager 1415 may be an example of aspects of base station communication manager 1315 as described herein. The base station communication manager 1415 may include an uplink transmission grant reference configuration transmitter 1420, a various transmission parameter transmitter 1425, a transmission parameter communication component 1430, a RACH parameter transmitter 1435, and a RACH message receiver 1440. . The base station communication manager 1415 may be an example of aspects of the base station communication manager 1610 described herein.

[0269] Actions performed by the base station communications manager 1415, as described herein, may be implemented to achieve one or more potential benefits. One implementation may allow base station 105 to use resources more efficiently because it does not have to signal all transmission parameters to the UE at once. Another implementation may provide improved quality and reliability of services at base station 105 because latency and the number of individual resources allocated to UE 115 may be reduced.

[0270] The uplink transmission grant reference configuration transmitter 1420 may transmit, to the UE, an uplink transmission grant reference configuration including a set of transmission reference parameters for subsequent communication in one BWP.

[0271] The different transmission parameter transmitter 1425 may transmit, to the UE, at least one transmission parameter that is different from the corresponding transmission parameter from the set of reference transmission parameters in the uplink transmission grant reference configuration.

[0272] The transmission parameter communication component 1430 may communicate with the UE using at least one transmission parameter.

[0273] The RACH parameter transmitter 1435 may transmit, to the UE, a set of transmission parameter sets for a RACH procedure, wherein each set of transmission parameter sets differs in at least one transmission parameter.

[0274] The RACH message receiver 1440 may receive, from the UE, a RACH message for a RACH procedure in accordance with one of a set of transmission parameter sets. In some examples, RACH message receiver 1440 may receive a random access preamble via a random access channel and receive a data message via a traffic channel.

[0275] Transmitting device 1445 may transmit signals received from other components of wireless device 1405. In some examples, transmitting device 1445 may be co-located with receiving device 1410 in a transceiver module. For example, transmitter 1445 may be an example of aspects of transmitter/receiver 1620 described with reference to FIG. 16. The transmitter 1445 may use a single antenna or a set of antennas.

[0276] FIG. 15 shows a block diagram 1500 of a base station communications manager 1505 that supports signaling transmission parameters in accordance with aspects of the present disclosure. The base station communications manager 1505 may be an example of aspects of the base station communications manager 1315, the base station communications manager 1415, or the base station communications manager 1610 described herein. The base station communication manager 1505 may include an uplink transmission permission reference configuration transmitter 1510, a various transmission parameter transmitter 1515, a transmission parameter communication component 1520, a reference configuration modification component 1525, a reference configuration deactivation component 1530, transmitting a RACH parameter device 1535, a RACH message receiver 1540, a DC configuration processing component 1545, and a time alignment processing component 1550. Each of these modules can communicate, directly or indirectly, with each other (for example, through one or more buses).

[0277] The uplink transmission grant reference configuration transmitter 1510 may transmit, to the UE, an uplink transmission grant reference configuration including a set of transmission reference parameters for subsequent communication in one BWP. In some cases, the uplink grant reference configuration may include at least one of a modulation and coding scheme, transport block size, power control parameters, non-orthogonal multiple access spreading factor, or a combination thereof. Additionally, the reference configuration of uplink transmission grants may be transmitted via RRC signaling, SIB transmission, or specified configurations to the UE.

[0278] In some examples, uplink grant reference configuration transmitter 1510 may transmit one or more uplink grant reference configurations with a reference configuration index for each uplink grant reference configuration, wherein the at least one transmission parameter includes an indicator of one reference configuration index for the UE to identify at least one transmission parameter that is different from the corresponding transmission parameter from the set of reference transmission parameters.

[0279] Additionally or alternatively, the uplink grant reference configuration transmitter 1510 may transmit the uplink grant reference configuration with a field that indicates that the uplink grant reference configuration is being used by the UE to identify at least one transmission parameter instead of a corresponding transmission parameter from the set of reference transmission parameters after the reference uplink transmission grant configuration is transmitted.

[0280] In some examples, uplink transmission grant reference configuration sender 1510 may transmit a dedicated uplink reference configuration, wherein at least one transmission parameter is identified by the UE to be used instead of a corresponding transmission parameter based on the dedicated uplink configuration communications.

[0281] Additionally or alternatively, uplink grant reference configuration transmitter 1510 may transmit an upper layer configured uplink grant on a dedicated reference signal, wherein the upper layer configured uplink grant activates configured type one transmit permission for the UE.

[0282] In some examples, uplink grant reference configuration transmitter 1510 may transmit a configured uplink grant including a reference uplink grant configuration, and transmit, in a dependent uplink grant configuration link at least one transmission parameter that is different from a corresponding transmission parameter from the set of reference transmission parameters in the reference uplink transmission permission configuration.

[0283] Additionally or alternatively, the uplink transmission grant reference configuration transmitter 1510 may transmit, to the UE, a reference set of transmission parameters, wherein subsequent communication is transmitted based on the difference between at least one transmission parameter and the reference set of parameters transfers.

[0284] In some examples, uplink grant reference configuration sender 1510 may transmit, to the UE, an uplink grant configuration, wherein the uplink grant configuration includes a reference grant configuration uplink transmission. Additionally or alternatively, uplink grant reference configuration transmitter 1510 may transmit a set of uplink grant configurations, wherein each uplink grant configuration set includes one of the set of uplink grant reference configurations. on the uplink.

[0285] The various transmission parameter transmitter 1515 may transmit, to the UE, at least one transmission parameter that is different from the corresponding transmission parameter from the set of reference transmission parameters in the uplink transmission grant reference configuration. In some cases, the at least one transmission parameter that is different from the corresponding transmission parameter of the reference signal set may include a time resource allocation, a frequency resource allocation, a DMRS port, a DMRS scrambling seed number, a DMRS seed identifier, a rate matching parameter DMRS and uplink physical shared channel, the ratio of the power of the traffic signals to the power of the pilot signals, or a combination thereof.

[0286] The transmission parameter communication component 1520 may communicate with the UE using at least one transmission parameter.

[0287] The reference configuration modification component 1525 may transmit a modification of the uplink transmission grant reference configuration and communicate with the UE based on the modification. In some examples, the reference configuration modification component 1525 may reconfigure at least one transmission parameter based on the modification. Additionally or alternatively, the reference configuration modification component 1525 may transmit at least one reconfigured transmission parameter to the UE.

[0288] The reference configuration deactivation component 1530 may receive an indicator to deactivate the reference uplink grant configuration and communicate with the UE based on the indicator to deactivate the reference uplink grant configuration.

[0289] The RACH parameter transmitter 1535 may transmit, to the UE, a set of transmission parameter sets for a RACH procedure, wherein each set of transmission parameter sets differs in at least one transmission parameter. In some cases, the RACH procedure may be performed for the initial access procedure, the RRC renewal procedure, the time advance update procedure, or a combination thereof. Additionally, the RACH procedure is a competitive RACH procedure or a non-competitive RACH procedure. In some cases, the RACH procedure includes a two-step RACH procedure.

[0290] Additionally, a set of transmission parameter sets for the RACH procedure may be transmitted via RRC signaling, SIB transmission, or specified configurations to the UE. In some cases, the at least one transmission parameter includes a RACH preamble for the RACH message, time and frequency resources for the RACH message, DMRS parameters, or a combination thereof.

[0291] The RACH message receiver 1540 may receive, from the UE, a RACH message for a RACH procedure in accordance with one of a set of transmission parameter sets.

[0292] The DC configuration processing component 1545 may transmit, to the UE, a configuration for dual connection mode communication with a primary cell and a secondary cell, and receive a RACH message in the primary cell or secondary cell. In some examples, DC configuration processing component 1545 may receive a primary cell or secondary cell indicator via a RACH message preamble, DMRS for the RACH message, RACH resources for the RACH message, or a combination thereof.

[0293] The timing alignment processing component 1550 may transmit, to the UE, a timing advance parameter and an alignment timer, and receive, from the UE, uplink data with a RACH message after the alignment timer expires.

[0294] In some examples, the time alignment processing component 1550 may transmit a second timer that indicates a time window after the time alignment timer expires, with uplink data being received with a RACH message within the time window.

[0295] FIG. 16 shows a diagram of a system 1600 including an apparatus 1605 that supports signaling transmission parameters in accordance with aspects of the present disclosure. Device 1605 may be an example of or include components of device 1305, device 1405, or base station 105, as described herein. The device 1605 may include components for bidirectional voice and data transmission, including components for transmitting and receiving communications, including a base station communication manager 1610, a network communication manager 1615, a transceiver 1620, an antenna 1625, a storage device 1630 , processor 1640 and inter-station communication manager 1645. These components may support electronic communication via one or more buses (eg, a 1650 bus).

[0296] The base station communications manager 1610 may transmit, to the UE, a reference uplink transmission grant configuration including a set of reference transmission parameters for subsequent communication in one BWP. Additionally, the base station communication manager 1610 may transmit to the UE at least one transmission parameter that is different from the corresponding transmission parameter from the set of reference transmission parameters in the uplink transmission grant reference configuration. In some cases, the base station communication manager 1610 may communicate with the UE using at least one transmission parameter.

[0297] Additionally or alternatively, the base station communications manager 1610 may also transmit, to the UE, a set of transmission parameter sets for a RACH procedure, wherein each set of transmission parameter sets differs in at least one transmission parameter. In some cases, the base station communications manager 1610 may receive, from the UE, a RACH message for a RACH procedure in accordance with one of a set of transmission parameter sets.

[0298] Network communication manager 1615 may manage communications with the core network (eg, via one or more wired backhaul links). For example, network communication manager 1615 may manage data communications for client devices, such as one or more UEs 115.

[0299] Transceiver 1620 may communicate bidirectionally through one or more antennas, wired or wireless communication links, as described above. For example, transceiver device 1620 may represent a wireless transceiver device and may communicate bidirectionally with another wireless transceiver device. Transceiver device 1620 may also include a modem to modulate packets and provide modulated packets to antennas for transmission and demodulate packets received from antennas.

[0300] In some cases, a wireless device may include a single antenna 1625. However, in some cases, a device may have more than one antenna 1625, which may allow multiple wireless transmissions to be transmitted or received in parallel.

[0301] Storage device 1630 may include RAM, ROM, or a combination thereof. Memory device 1630 may store computer-readable code 1635 including instructions that, when executed by a processor (eg, processor 1640), instruct the device to perform various functions described herein. In some cases, storage device 1630 may include, among other things, a BIOS, which may control basic operation of the hardware or software, such as interaction with peripheral components or devices.

[0302] Processor 1640 may include an intelligent hardware device (e.g., a general purpose processor, DSP, CPU, microcontroller, ASIC, FPGA, programmable logic device, discrete logic gate or transistor logic component, discrete hardware component, or any combination of the foregoing). In some cases, processor 1640 may be configured to control the storage device matrix using a storage device controller. In some cases, a storage device controller may be integrated into processor 1640. Processor 1640 may be configured to execute machine-readable instructions stored in a storage device (e.g., memory device 1630) to instruct device 1605 to perform various functions (e.g., functions or tasks , supporting transmission of transmission parameters in signals).

[0303] Based on the improved transmission of transmission parameters in signals, processor 1640 can efficiently determine transmission parameters for subsequent communication with the UE. In the example, any change to the transmission parameters may cause all parameters to be transmitted again. Because of this, by reducing transmission parameters, the processor may be prepared to respond more efficiently by reducing the increase in processing power.

[0304] Interstation communication manager 1645 may manage communications with another base station 105 and may include a controller or scheduler for managing communications with UE 115 in conjunction with other base stations 105. For example, interstation communication manager 1645 may coordinate scheduling for transmissions in UE 115 for various interference mitigation technologies such as beamforming or aggregation. In some examples, inter-station communications manager 1645 may provide an X2 interface within LTE/LTE-A wireless technology to enable communications between base stations 105.

[0305] Code 1635 may include instructions for implementing aspects of the present disclosure, including instructions for supporting wireless communications. The code 1635 may be stored in a non-transitory computer-readable medium, such as a system storage device or other type of storage device. In some cases, code 1635 may not be directly executable by processor 1640, but may instruct a computer (eg, when compiled and executed) to perform functions described herein.

[0306] FIG. 17 shows a flowchart illustrating a method 1700 that supports signaling transmission parameters in accordance with aspects of the present disclosure. The operations of method 1700 may be implemented by UE 115 or components thereof, as described herein. For example, the operations of method 1700 may be performed by the UE communication manager, as described with reference to FIG. 9-12. In some examples, the UE may execute a set of instructions to control functional elements of the UE in order to perform the functions described below. Additionally or alternatively, the UE may perform aspects of the functions described below using special purpose hardware.

[0307] At 1705, the UE may identify, in the UE, an uplink transmission grant reference configuration including a set of transmission reference parameters for subsequent communication in one BWP. Operations 1705 may be performed according to methods described herein. In some examples, aspects of operations 1705 may be performed by an uplink grant reference configuration identification module, as described with reference to FIG. 9-12.

[0308] At 1710, the UE may receive, in the UE, at least one transmission parameter that is different from a corresponding transmission parameter from a set of reference transmission parameters in the uplink transmission grant reference configuration. Operations 1710 may be performed according to methods described herein. In some examples, aspects of operations 1710 may be performed by the receiver of various transmission parameters, as described with reference to FIG. 9-12.

[0309] At 1715, the UE may determine to use at least one transmission parameter instead of the corresponding transmission parameter from the set of reference transmission parameters for subsequent communication in one BWP. Operations 1715 may be performed according to methods described herein. In some examples, aspects of operations 1715 may be performed by a transmission parameter determination component, as described with reference to FIG. 9-12.

[0310] At 1720, the UE may communicate using at least one transmission parameter. Operations 1720 may be performed according to methods described herein. In some examples, aspects of operations 1720 may be performed by the communication module using transmission parameters, as described with reference to FIG. 9-12.

[0311] FIG. 18 shows a flowchart illustrating a method 1800 that supports signaling transmission parameters in accordance with aspects of the present disclosure. The operations of method 1800 may be implemented by UE 115 or components thereof, as described herein. For example, the operations of method 1800 may be performed by the UE communication manager, as described with reference to FIG. 9-12. In some examples, the UE may execute a set of instructions to control functional elements of the UE in order to perform the functions described below. Additionally or alternatively, the UE may perform aspects of the functions described below using special purpose hardware.

[0312] At 1805, the UE may receive, at the UE, a set of transmission parameter sets for a RACH procedure, wherein each set of transmission parameter sets differs in at least one transmission parameter. Operations 1805 may be performed according to methods described herein. In some examples, aspects of operations 1805 may be performed by a RACH parameter receiver, as described with reference to FIG. 9-12.

[0313] At 1810, the UE may select, in the UE, a set of transmission parameters from a set of sets of transmission parameters for transmitting the RACH message of the RACH procedure. Operations 1810 may be performed according to methods described herein. In some examples, aspects of operations 1810 may be performed by a RACH parameter selection module, as described with reference to FIG. 9-12.

[0314] At 1815, the UE may transmit, to the base station, a RACH message using a selected set of transmission parameters. The RACH message may include, for example, a random access preamble and an information message (eg, data, UCI). The random access preamble may be transmitted through a random access channel, and the information message may be transmitted through a physical uplink control channel or a physical uplink shared channel. The first of the plurality of transmission parameter sets may be associated with a first set of random access channel resources, a first subset of random access preambles, a first DMRS parameter, or a combination thereof. The second of the plurality of transmission parameter sets may be associated with a second set of random access channel resources, a second subset of random access preambles, a second DMRS parameter, or a combination thereof. Operations 1815 may be performed according to methods described herein. In some examples, aspects of operations 1815 may be performed by a transmitting RACH device, as described with reference to FIG. 9-12.

[0315] FIG. 19 shows a flowchart illustrating a method 1900 that supports signaling transmission parameters in accordance with aspects of the present disclosure. The operations of method 1900 may be implemented by base station 105 or components thereof, as described herein. For example, the operations of method 1900 may be performed by a base station communications manager, as described with reference to FIG. 13-15. In some examples, the base station may execute a set of instructions to control functional elements of the base station so as to perform the functions described below. Additionally or alternatively, the base station may perform aspects of the functions described below using special purpose hardware.

[0316] At 1905, the base station may transmit, to the UE, an uplink transmission grant reference configuration including a set of transmission reference parameters for subsequent communication in one BWP. Operations 1905 may be performed according to methods described herein. In some examples, aspects of operations 1905 may be performed by the uplink grant reference configuration transmitter, as described with reference to FIG. 13-16.

[0317] At 1910, the base station may transmit, to the UE, at least one transmission parameter that is different from the corresponding transmission parameter from the set of reference transmission parameters in the uplink transmission grant reference configuration. Operations 1910 may be performed according to methods described herein. In some examples, aspects of operations 1910 may be performed by the transmitter of various transmission parameters, as described with reference to FIG. 13-16.

[0318] At 1915, the base station may communicate with the UE using at least one transmission parameter. Operations 1915 may be performed according to methods described herein. In some examples, aspects of operations 1915 may be performed by the communication component using transfer parameters, as described with reference to FIG. 13-16.

[0319] FIG. 20 shows a flowchart illustrating a method 2000 that supports signaling transmission parameters in accordance with aspects of the present disclosure. The operations of method 2000 may be implemented by base station 105 or components thereof, as described herein. For example, the operations of method 2000 may be performed by a base station communications manager, as described with reference to FIG. 13-15. In some examples, the base station may execute a set of instructions to control functional elements of the base station so as to perform the functions described below. Additionally or alternatively, the base station may perform aspects of the functions described below using special purpose hardware.

[0320] At 2005, the base station may transmit, to the UE, a set of transmission parameter sets for a RACH procedure, wherein each set of transmission parameter sets differs in at least one transmission parameter. Operations 2005 may be performed according to the methods described herein. In some examples, aspects of operations 2005 may be performed by a RACH parameter transmitter, as described with reference to FIG. 13-16.

[0321] As of 2010, a base station may receive, from a UE, a RACH message for a RACH procedure in accordance with one of a set of transmission parameter sets. The RACH message may include, for example, a random access preamble and an information message (eg, data, UCI). The random access preamble may be received via a random access channel, and the information message may be received via a physical uplink control channel or a physical uplink shared channel. The first of the plurality of transmission parameter sets may be associated with a first set of random access channel resources, a first subset of random access preambles, a first DMRS parameter, or a combination thereof. The second of the plurality of transmission parameter sets may be associated with a second set of random access channel resources, a second subset of random access preambles, a second DMRS parameter, or a combination thereof. Operations 2010 may be performed according to the methods described herein. In some examples, aspects of operations 2010 may be performed by a RACH message receiver, as described with reference to FIG. 13-16.

[0322] It should be noted that the methods described herein describe possible implementations, and that the operations and steps may be rearranged or otherwise modified, and that other implementations are possible. Additionally, aspects from two or more of the methods may be combined.

[0323] The technologies described herein can be used for various wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (TDMA). FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA) and other systems. A CDMA system may implement radio technology such as CDMA2000, Universal Terrestrial Radio Access (UTRA), etc. CDMA2000 covers IS-2000, IS-95 and IS-856 standards. IS-2000 versions may be commonly referred to as CDMA2000 1X, 1X, etc. IS-856 (TIA-856) is commonly referred to as CDMA2000 1xEV-DO, High Speed Packet Data (HRPD) standard, etc. UTRA includes wideband CDMA (WCDMA) and other varieties of CDMA. A TDMA system may implement a radio technology such as the Global System for Mobile Communications (GSM).

[0324] An OFDMA system may implement radio technology such as Mobile Ultra Wideband (UMB), Enhanced UTRA (E-UTRA), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, etc. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). LTE, LTE-A and LTE-A Pro are versions of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, LTE-A Pro, NR and GSM are described in documents from an organization called the 3rd Generation Partnership Project (3GPP). CDMA2000 and UMB are described in documents from an organization called the Third Generation Partnership Project 2 (3GPP2). The technologies described in this document may be used for the radio communication systems and technologies mentioned in this document as well as for other radio communication systems and technologies. Although aspects of an LTE, LTE-A, LTE-A Pro, or NR system may be described for exemplary purposes, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used throughout much of the description, The technologies described in this document are applicable beyond LTE, LTE-A, LTE-A Pro or NR applications.

[0325] A macro cell generally covers a relatively large geographic area (eg, a radius of several kilometers) and may allow unrestricted access by a UE with a subscription to a network service provider. A small cell may be associated with a base station of lower power than a macro cell, and the small cell may operate in identical or different (eg, licensed, unlicensed, etc.) frequency bands than the macro cells. Small cells may include picocells, femtocells, and microcells according to various examples. A picocell, for example, may cover a small geographic area and may provide unrestricted access through UEs with network service provider subscriptions. A femtocell may also cover a small geographic area (eg, a home) and may provide limited access by UEs associated with the femtocell (eg, UEs in a closed subscriber group (CSG), UEs for home users, etc.). The ENB for a macro cell may be referred to as a macro eNB. A small cell ENB may be referred to as a small cell eNB, pico-eNB, femto-eNB, or native eNB. The ENB may support one or more (eg, two, three, four, etc.) cells and may also support communications using one or more component carriers.

[0326] The wireless communication systems described herein may support synchronous or asynchronous operation. For synchronous operation, base stations may have similar frame timing, and transmissions from different base stations may be approximately aligned in time. For asynchronous operation, base stations may have different frame timing, and transmissions from different base stations may not be aligned in time. The technologies described in this document can be used for synchronous or asynchronous operation.

[0327] The information and signals described herein may be represented using any of a variety of different technologies. For example, the data, instructions, commands, information, signals, bits, symbols and chips that may be exemplified in the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination above.

[0328] Various illustrative blocks and modules described in connection with the disclosure herein may be implemented or executed by a general purpose processor, DSP, ASIC, FPGA, or other programmable logic device, discrete logic gate or transistor logic, discrete hardware components or any combination of the foregoing designed to perform the functions described herein. The general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (eg, a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors plus a DSP core, or any other similar configuration).

[0329] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. When implemented in software executed by a processor, the functions may be stored or transmitted as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwired hardware, or combinations of any of the foregoing. Features that implement functions can also be physically located in different positions, including according to such a distribution that parts of the functions are implemented in different physical locations.

[0330] Computer readable media includes both non-volatile computer storage media and communication media, including any transmission medium that facilitates movement of a computer program from one location to another. A non-volatile storage medium can be any available medium that can be accessed by a general purpose or special purpose computer. By way of example, and not limitation, non-volatile computer-readable media may include random access memory (RAM), read only memory (ROM), electrically erasable programmable ROM (EEPROM), flash memory, compact disc (CD) ROM, or other optical disk storage device, magnetic disk storage device or other magnetic data storage devices, or any other non-volatile medium that can be used to carry or store the required program code facility in the form of instructions or data structures, and to which can be accessed by a general purpose or special purpose computer or a general purpose or special purpose processor. In addition, it is correct to call any connection a machine-readable medium. For example, if software is transmitted from a Web site, server, or other remote source using coaxial cable, fiber optic cable, twisted pair cable, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave media, then coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, radio and microwave media are included in the definition of media. Disc and disc as used herein include CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, wherein discs typically reproduce data magnetically, while discs typically reproduce data optically using lasers. Combinations of the above are also included among machine-readable media.

[0331] When used herein, including in claims, "or" when used in a list of elements (for example, in a list of elements preceded by a phrase such as "at least one of" or "one or more of") specifies an enclosing list such that, for example, the list "at least one of A, B or C" means A or B or C or AB or AC or BC or ABC (i.e. A both B and C). In addition, when used herein, the phrase “based on” should not be construed as referring to a closed set of conditions. For example, an example step that is described “based on condition A” could be based on both condition A and condition B without departing from the scope of the present disclosure. In other words, when used herein, the phrase “based on” should be interpreted identically to the phrase “based at least in part.”

[0332] In the accompanying drawings, similar components and features may have identical reference numerals. In addition, different components of the same type may be distinguished by adding a dash after the reference designator and a second designation that differs between similar components. If only the first reference numeral is used in the detailed description, the description applies to any of the like components having the identical first reference numeral, regardless of the second reference numeral or other subsequent reference numeral.

[0333] The description set forth herein in connection with the accompanying drawings describes exemplary configurations and does not represent all examples that may be implemented or that fall within the scope of the claims. The term “exemplary” as used herein means “serving as an example or illustration” and not “preferred” or “superior to other examples.” The Detailed Description includes specific details for the purpose of providing an understanding of the technologies described. However, these technologies may be implemented in practice without these specific details. In some cases, common structures and devices are shown in block diagram form in order to avoid making the concepts of the described examples difficult to understand.

[0334] The description herein is provided to enable those skilled in the art to make or use the disclosure. Various modifications to the disclosure should be apparent to those skilled in the art, and the general principles described herein may be applied to other embodiments without departing from the scope of the disclosure. Therefore, the disclosure is not limited to the examples and designs described herein, but is intended to cover the widest possible scope consistent with the principles and novel features disclosed herein.

Claims (54)

1. A method for wireless communication in a user equipment, UE (115), comprising the steps of: - receiving (405, 805, 1805), at the UE, a plurality of sets (410) of transmission parameters for a procedure based on a random access channel, each set of transmission parameters including a different allocation of time resources, allocation of frequency resources, or a combination thereof; - selecting (820, 1810) a set of transmission parameters from a plurality of sets (410) of transmission parameters for transmitting a message (425) over a random access channel of a procedure based on the random access channel, wherein selecting (820, 1810) a set of transmission parameters comprises selecting a set of transmission parameters based on resources to be used for the message (425) over the random access channel; And - transmitting (420, 830, 1815) to the base station (105) a message (425) over a random access channel in accordance with a selected set of transmission parameters, wherein the message over the random access channel includes a random access preamble and an information message. 2. The method of claim 1, wherein transmitting (420, 830, 1815) the message (425) over a random access channel further comprises the steps of: - transmitting a random access preamble through a random access channel; And - transmitting the information message through a physical uplink control channel or a physical uplink shared channel; wherein a first of the plurality of transmission parameter sets is associated with a first set of random access channel resources, and a second of the plurality of transmission parameter sets is associated with a second set of random access channel resources. 3. The method of claim 1, wherein the first of the plurality of transmission parameter sets is associated with the first subset of random access preambles, and the second of the plurality of transmission parameter sets is associated with the second subset of random access preambles; and/or wherein a first of a plurality of sets of transmission parameters is associated with a first parameter of a demodulation reference signal, DMRS, and a second of a plurality of sets of transmission parameters is associated with a second DMRS parameter. 4. The method according to claim 1, in which the selection of a set of transmission parameters further comprises the steps of: - identifying the purpose of the procedure based on the random access channel; And - selecting a set of transmission parameters based at least in part on the identified target; wherein the target of the random access channel-based procedure comprises at least one of an initial access procedure, a radio resource control resume procedure, a time advance update procedure, or a combination thereof; and/or in this case, the selection of a set of transmission parameters additionally contains the steps of: - identifying whether the random access channel-based procedure is competitive or non-contentious; And - selecting a set of transmission parameters based at least in part on the identified competitive or non-contentious procedure based on the random access channel; and/or in this case, the selection of a set of transmission parameters additionally contains the steps of: - identifying uplink control information to be transmitted in the message over the random access channel; And - selecting a set of transmission parameters based at least in part on the transmission of uplink control information, whether the uplink control information is carried on a physical uplink shared channel or on a physical uplink control channel, the format of the physical channel an uplink control used to carry uplink control information, a modulation order of the uplink control information, a size of the uplink control information, or a combination thereof. 5. The method according to claim 1, additionally containing the steps of: - adopt a configuration for communication in a dual connection mode with a primary cell and a secondary cell; - selecting a primary cell or a secondary cell for the random access channel based procedure; - selecting a set of transmission parameters for transmitting a message over a random access channel based at least in part on which of the primary cell or the secondary cell is selected; And - transmitting a message over a random access channel to a selected primary cell or secondary cell using a selected set of transmission parameters; wherein a primary cell or a secondary cell is selected based at least in part on quality of service, the result of a listen-before-send procedure, an interference measurement, coverage requirements, or a combination thereof; wherein the method further comprises the step of: - indicate the selected primary cell or secondary cell using a preamble for a random access channel message, a demodulation reference signal for a random access channel message, a random access channel resource for a random access channel message, or a combination thereof. 6. The method of claim 1, wherein the plurality of transmission parameter sets for the random access channel based procedure are received via radio resource control layer signaling, system information block transmission, or specified configurations to the UE. 7. A method for wireless communication in a base station (105), comprising the steps of: - transmitting (405, 805, 2005) to the user equipment, UE (115), a plurality of sets (410) of transmission parameters for a procedure based on a random access channel, each set of transmission parameters including a different allocation of time resources, allocation of frequency resources or a combination thereof; And - receive (420, 830, 2010) from the UE (115) a message (425) on a random access channel for a procedure based on the random access channel in accordance with one of a plurality of sets (410) of transmission parameters selected based on at least at least in part, resources used for the message (425) on the random access channel, where the message (425) on the random access channel includes a random access preamble and an information message. 8. The method of claim 7, wherein the random access preamble is received through a random access channel, and the information message is received through a physical uplink control channel or a physical uplink shared channel; wherein a first of a plurality of transmission parameter sets is associated with a first set of random access channel resources, and a second of a plurality of transmission parameter sets is associated with a second set of random access channel resources. 9. The method of claim 7, wherein the first of the plurality of transmission parameter sets is associated with the first subset of random access preambles, and the second of the plurality of transmission parameter sets is associated with the second subset of random access preambles; and/or wherein a first of a plurality of sets of transmission parameters is associated with a first parameter of a demodulation reference signal, DMRS, and a second of a plurality of sets of transmission parameters is associated with a second DMRS parameter. 10. The method of claim 7, wherein the random access channel-based procedure is performed for an initial access procedure, a radio resource control resume procedure, a time advance update procedure, or a combination thereof; and/or wherein the random access channel-based procedure is a competitive random access channel-based procedure or a non-competitive random access channel-based procedure. 11. The method according to claim 7, additionally containing the steps of: - transmitting, to the UE, a configuration for communication in a dual connection mode with a primary cell and a secondary cell; And - receiving a message over a random access channel in a primary cell or a secondary cell; wherein the method further comprises the step of: - receiving a primary cell or secondary cell indicator via a random access preamble, a demodulation reference signal for a random access channel message, a random access channel resource for a random access channel message, or a combination thereof. 12. Wireless communication equipment in the user equipment, UE (115), containing: - means for receiving at the UE (115) a plurality of sets (410) of transmission parameters for a random access channel procedure, each set of transmission parameters including a different allocation of time resources, allocation of frequency resources, or a combination thereof; means for selecting a set of transmission parameters from a plurality of sets (410) of transmission parameters for transmitting a random access channel message (425) of the random access channel procedure, wherein selecting (820, 1810) the set of transmission parameters comprises selecting a set of transmission parameters based on the resources to be using a random access channel for the message (425); And - means for transmitting, to the base station (105), a random access channel message (425) in accordance with a selected set of transmission parameters, the random access channel message including a random access preamble and an information message. 13. Wireless communication equipment according to claim 12, further comprising means for performing the method according to any one of claims. 2-6. 14. Wireless communication equipment in the base station (105), containing: - means for transmitting to the user equipment UE (115) a plurality of sets (410) of transmission parameters for a random access channel procedure, each set of transmission parameters including a different allocation of time resources, allocation of frequency resources, or a combination thereof; And - means for receiving from the UE (115) a random access channel message (425) for a random access channel procedure in accordance with one of a plurality of sets (410) of transmission parameters selected based at least in part on the resources used for the message (425 ) random access channel, wherein the random access channel message includes a random access preamble and an information message. 15. Wireless communication equipment according to claim 14, further comprising means for performing the method according to any one of claims. 8-11. 16. A computer-readable medium storing instructions that, when executed by a subscriber device, cause the subscriber device to carry out the steps of the method of any one of claims. 1-6. 17. A computer-readable medium storing instructions that, when executed by a base station, cause the base station to carry out the steps of the method of any one of claims. 7-11.

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