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WO2024234247A1 - Procédés de commande de puissance, procédés de communication sans fil d'amélioration de couverture et dispositifs de communication sans fil - Google Patents

Procédés de commande de puissance, procédés de communication sans fil d'amélioration de couverture et dispositifs de communication sans fil Download PDF

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Publication number
WO2024234247A1
WO2024234247A1 PCT/CN2023/094282 CN2023094282W WO2024234247A1 WO 2024234247 A1 WO2024234247 A1 WO 2024234247A1 CN 2023094282 W CN2023094282 W CN 2023094282W WO 2024234247 A1 WO2024234247 A1 WO 2024234247A1
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WIPO (PCT)
Prior art keywords
power
prach
group
ramping
preamble
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PCT/CN2023/094282
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English (en)
Inventor
Kai Liu
Yiwei DENG
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen TCL New Technology Co Ltd
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Shenzhen TCL New Technology Co Ltd
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Priority to PCT/CN2023/094282 priority Critical patent/WO2024234247A1/fr
Publication of WO2024234247A1 publication Critical patent/WO2024234247A1/fr
Anticipated expiration legal-status Critical
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
    • H04W52/36—Transmission power control [TPC] using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/362—Aspects of the step size
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/38—TPC being performed in particular situations
    • H04W52/50—TPC being performed in particular situations at the moment of starting communication in a multiple access environment

Definitions

  • the present disclosure relates to the field of wireless communication systems, and more particularly, to power control methods of radio network access procedures, wireless communication methods of coverage enhancement, and wireless communication devices, especially for coverage enhancement for Uplink (UL) transmission.
  • UL Uplink
  • Coverage is one of the key factors that an operator considers when commercializing cellular communication networks due to its direct impact on service quality as well as CAPEX and OPEX. Despite the importance of coverage on the success of NR commercialization, a thorough coverage evaluation and a comparison with legacy RATs considering all NR specification details have not been done up to now.
  • New Radio is designed to operate at much higher frequencies such as 28GHz or 39GHz in FR2.
  • FR1 such as 3.5GHz
  • 3.5GHz is typically in higher frequencies than for LTE or 3G. Due to the higher frequencies, it is inevitable that the wireless channel will be subject to higher path-loss making it more challenging to maintain an adequate quality of service that is at least equal to that of legacy RATs.
  • voice service for which a typical subscriber will always expect a ubiquitous coverage wherever s/he is.
  • NR can be deployed either in newly allocated spectrums, such as 3.5GHz, or in a spectrum re-farmed from a legacy network, e.g., 3G and 4G. In either case, coverage will be a critical issue considering the fact that these spectrums will most likely handle key mobile services such as voice and low-rate data services.
  • coverage was not thoroughly evaluated during the self-evaluation campaign towards IMT-2020 submission and not considered in Rel-16 enhancements. In these regards, a thorough understanding of NR coverage performance is needed while taking into account the support of latest NR specification.
  • An object of the present disclosure is to propose power control methods of radio network access procedures, wireless communication methods of coverage enhancement, and wireless communication devices, especially for coverage enhancement for uplink (UL) transmission.
  • a power control method of a radio network access procedure includes transmitting, by a wireless communication device, a physical channel information associated with power ramping/boosting when the wireless communication device determines a radio network access, wherein the physical channel information comprises a physical random access channel (PRACH) group, a message physical uplink shared channel (PUSCH) , a message PUSCH group, and/or a plurality of message groups.
  • PRACH physical random access channel
  • PUSCH message physical uplink shared channel
  • PUSCH message PUSCH group
  • a wireless communication method of coverage enhancement includes determining, by a wireless communication device, a random access channel occasion (RO) group pattern or a group of ROs within a time unit and/or with same/different frequency resources through a RO group information.
  • RO random access channel occasion
  • a wireless communication method of coverage enhancement includes determining, by a wireless communication device, a mapping rule between multiple PRACH transmissions and SSBs, wherein an SSB mapping to a RO group or to a set of RO groups is with different time and/or same/different frequency domain.
  • a wireless communication method of coverage enhancement includes determining, by a wireless communication device, an RAR window for multiple PRACH transmissions, wherein a start point of the RAR window is based on a control information.
  • a wireless communication method of coverage enhancement includes determining, by a wireless communication device, an RA-RNTI for multiple PRACH transmissions, wherein the RA-RNTI determination is associated to one or a set of ROs within a ROs group or a set of ROs group, and the ROs group or the set of ROs groups are associated with multiple PRACH transmissions.
  • a wireless communication device includes a memory, a transceiver, and a processor coupled to the memory and the transceiver.
  • the processor is configured to execute the above method.
  • a non-transitory machine-readable storage medium has stored thereon instructions that, when executed by a computer, cause the computer to perform the above method.
  • a chip includes a processor, configured to call and run a computer program stored in a memory, to cause a device in which the chip is installed to execute the above method.
  • a computer readable storage medium in which a computer program is stored, causes a computer to execute the above method.
  • a computer program product includes a computer program, and the computer program causes a computer to execute the above method.
  • a computer program causes a computer to execute the above method.
  • the PRACH group comprising a plurality of PRACHs with power ramping/boosting is transmitted.
  • the receivedTargetPower configured in higher parameters is an random access preamble power of the PRACH
  • the DELTA_PREAMBLE is a power offset related to a preamble format
  • the INTER_GROUP_PREAMBLE_POWER_RAMPING_COUNTER is an inter PRACH group power ramping counter
  • the INTER_GROUP_PREAMBLE_POWER_RAMPING_STEP configured in the higher parameters is an inter PRACH group power ramping step
  • the INTRA_GROUP_PREAMBLE_POWER_RAMPING_COUNTER is an intra PRACH group power ramping counter
  • the INTRA _GROUP_PREAMBLE_POWER_RAMPING_STEP configured in the higher parameters is an intra PRACH group power ramping step.
  • the calculation of power of the msg3 PUSCH is based on one of PRACHs in the last PRACH group, the last PRACH group after the PRACH group is transmitted, then an RAR is received.
  • the PRACH in the last PRACH group is determined by the network or the default rule.
  • the total ramping power of PRACH is the difference between the first PRACH in the initial PRACH group and the PRACH in the last PRACH group, the initial PRACH group is after SSB measurement, then the PRACH group is transmitted.
  • the start point of ⁇ (PREAMBLE_Msg3) application is the PRACH in the last PRACH group.
  • the msg3 PUSCH group comprises a plurality of msg3 PUSCHs with power ramping/boosting is transmitted.
  • an intra-group ramping/boosting power of the msg3 PUSCH in an msg3 PUSCH group is based on at least one of the following parameters: INTRA_GROUP_MSG3_POWER_RAMPING_COUNTER; and/or INTRA_GROUP_MSG3_POWER_RAMPING_STEP.
  • a number of msg3 PUSCHs in the msg3 PUSCH group is indicated by the RAR.
  • the ramping/boosting power of the msg3 PUSCH in the msg3 PUSCH group is based on one of PRACHs in the PRACH group.
  • the wireless communication device when the wireless communication device transmits a plurality of msgA groups comprises a plurality of msgAs with power ramping/boosting, if the wireless communication device does not receive the RAR and a number of the msgA groups reaches a certain threshold, the wireless communication device transmits a plurality of PRACH groups comprising msg1 PRACHs with power ramping/boosting.
  • the wireless communication device determines a target power of the msgA PRACH and the msg1 PRACH according to at least one of the following parameters: receivedTargetPower; DELTA_PREAMBLE; INTER_GROUP_PREAMBLE_POWER_RAMPING_COUNTER; INTER_GROUP_PREAMBLE_POWER_RAMPING_STEP;
  • INTRA_GROUP_PREAMBLE_POWER_RAMPING_COUNTER INTRA _GROUP_PREAMBLE_POWER_RAMPING_COUNTER; INTRA _GROUP_PREAMBLE_POWER_RAMPING_STEP; INTER_GROUP_POWER_OFFSET_2STEP_RA; and/or INTRA_GROUP_POWER_OFFSET_2STEP_RA.
  • the receivedTargetPower configured in higher parameters is an random access preamble power of the PRACH
  • the DELTA_PREAMBLE is a power offset related to a preamble format
  • the INTER_PREAMBLE_POWER_RAMPING_COUNTER is an inter PRACH group power ramping counter
  • the INTER_PREAMBLE_POWER_RAMPING_STEP configured in the higher parameters is an inter PRACH group power ramping step
  • the INTRA_PREAMBLE_POWER_RAMPING_COUNTER is an intra PRACH group power ramping counter
  • the INTRA_PREAMBLE_POWER_RAMPING_STEP configured in the higher parameters is an intra PRACH group power ramping step
  • the INTER_GROUP_POWER_OFFSET_2STEP_RA is the difference of the inter-group ramping power step between msgA PRACH and msg1 PRACH, and/or the INTRA_GROUP_POWER_OFFSET_2
  • the RAR indicates a number of and/or a transmission gain of the msg3 PUSCHs.
  • the RAR indicates the number of and/or the transmission gain of the msg3 PUSCHs based on a signal quality of PRACH.
  • the signal quality of PRACH comprises a path loss, reference signal received power (RSRP) , a reference signal received quality (RSRQ) , and/or a signal-to-interference-plus-noise ratio (SINR) .
  • RSRP reference signal received power
  • RSRQ reference signal received quality
  • SINR signal-to-interference-plus-noise ratio
  • an initial transmission power of the physical channel information is associated with an SSB-RSRP.
  • different levels of SSB-RSRP have different initial power boosting.
  • the wireless communication device determines a target power of PRACH based on at least one of the following parameters: receivedTargetPower; DELTA_PREAMBLE; PREAMBLE_POWER_RAMPING_COUNTER; PREAMBLE_POWER_RAMPING_STEP; POWER_OFFSET_2STEP_RA; and/or PREAMBLE_POWER_BOOSTING.
  • the receivedTargetPower configured in higher parameters is an random access preamble power of the PRACH
  • the DELTA_PREAMBLE is a power offset related to a preamble format
  • the PREAMBLE_POWER_RAMPING_COUNTER is a PRACH group power ramping counter
  • the PREAMBLE_POWER_RAMPING_STEP configured in the higher parameters is a PRACH group power ramping step
  • POWER_OFFSET_2STEP_RA is the difference of the ramping power step between msgA PRACH and msg1 PRACH
  • the PREAMBLE_POWER_BOOSTING is associated with each level of SSB-RSRP.
  • an association relationship between the initial transmission power of the physical channel information and the SSB-RSRP is pre-defined or configured.
  • an initial transmission power of the physical channel information is associated with a repetition number of PRACH transmission.
  • different numbers of PRACH repetitions have different initial power boosting.
  • the wireless communication device determines a target power of PRACH based on at least one of the following parameters: receivedTargetPower; DELTA_PREAMBLE; PREAMBLE_POWER_RAMPING_COUNTER; PREAMBLE_POWER_RAMPING_STEP; POWER_OFFSET_2STEP_RA; and/or PREAMBLE_POWER_BOOSTING.
  • the receivedTargetPower configured in higher parameters is an random access preamble power of the PRACH
  • the DELTA_PREAMBLE is a power offset related to a preamble format
  • the PREAMBLE_POWER_RAMPING_COUNTER is a PRACH group power ramping counter
  • the PREAMBLE_POWER_RAMPING_STEP configured in the higher parameters is a PRACH group power ramping step
  • POWER_OFFSET_2STEP_RA is the difference of the ramping power step between msgA PRACH and msg1 PRACH
  • the PREAMBLE_POWER_BOOSTING is associated with the repetition number of PRACH.
  • an association relationship between the initial transmission power of the physical channel information and the repetition number of PRACH transmission is pre-defined or configured.
  • the RO group information is indicated in a system information.
  • the RO group information comprises at least one of the following parameters: a number of ROs within a group or a set of groups, the RO group pattern, a starting of RO groups, an end of the ROs group, a hopping pattern, and/or a hopping size.
  • the RO group information comprises a predefined rule for RO group mapping within a periodicity.
  • the RO group is determined based on the number or the maximum number of multiple PRACH transmissions, and/or within the RO group, more than one starting point or reference point is defined, each starting point or reference point is associated to a multiple PRACH transmission level.
  • the RO group is determined based on the number and/or the maximum number and/or the candidate number of multiple PRACH transmissions, time domain based mapping first in order of the candidate number of multiple PRACH transmission, then frequency domain mapping.
  • the control information comprises at least one of the following: a first symbol of an earliest CORESET, which the wireless communication device is configured to receive PDCCH for RACH; the earliest CORESET, which the wireless communication device is configured to receive PDCCH for multiple RACHs; the first symbol of the first PDCCH, which the wireless communication device is configured for RACH, that is at least one symbol after the last symbol of the last valid PRACH occasion within a RO group; the last symbol of the last valid PRACH occasion or a last symbol of the pre-defined valid PRACH occasion of multiple PRACH transmission; and/or the last symbol of the last valid RACH occasions of the last ROs group within a set of ROs group, where the ROs group or the set of ROs groups are associated with multiple PRACH transmissions.
  • the RA-RNTI for an attempt of multiple PRACH transmission is based on one RO within a ROs group or a set of ROs groups, the one RO is the first RO or the last RO or any one of RO or a fixed RO within the ROs group, the ROs group or the set of ROs groups which is used for multiple PRACH transmission.
  • FIG. 1 is a block diagram of a wireless communication device according to an embodiment of the present disclosure.
  • FIG. 2 is a flowchart illustrating a power control method of a radio network access procedure according to an embodiment of the present disclosure.
  • FIG. 3 is a schematic diagram illustrating a power control of a radio network access according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram illustrating a power control of a radio network access according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram illustrating a power control of a radio network access according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic diagram illustrating a power control of a radio network access according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram illustrating a power control of a radio network access according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram illustrating a power control of a radio network access according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram illustrating a power control of a radio network access according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram illustrating a power control of a radio network access according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic diagram illustrating a power control of a radio network access according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic diagram illustrating a power control of a radio network access according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic diagram illustrating a power control of a radio network access according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic diagram illustrating a power control of a radio network access according to an embodiment of the present disclosure.
  • FIG. 15 is a flowchart illustrating a wireless communication method of coverage enhancement according to an embodiment of the present disclosure.
  • FIG. 16 is a flowchart illustrating a wireless communication method of coverage enhancement according to an embodiment of the present disclosure.
  • FIG. 17 is a flowchart illustrating a wireless communication method of coverage enhancement according to an embodiment of the present disclosure.
  • FIG. 18 is a flowchart illustrating a wireless communication method of coverage enhancement according to an embodiment of the present disclosure.
  • FIG. 19 is a schematic diagram illustrating an RO group pattern based on the number or maximum of multiple PRACH transmission according to an embodiment of the present disclosure.
  • FIG. 20 is a schematic diagram illustrating an RO group pattern based on the number or maximum of multiple PRACH transmission according to an embodiment of the present disclosure.
  • FIG. 21 is a schematic diagram illustrating an RO group pattern with different frequency resources according to an embodiment of the present disclosure.
  • FIG. 22 is a schematic diagram illustrating an RO group pattern with different frequency resources according to an embodiment of the present disclosure.
  • FIG. 23 is a schematic diagram illustrating an RO group pattern mapping in time and/or frequency ROs according to an embodiment of the present disclosure.
  • FIG. 24 is a schematic diagram illustrating an RO group pattern mapping in time and/or frequency ROs according to an embodiment of the present disclosure.
  • FIG. 25 is a schematic diagram illustrating an RO group mapping based on candidate value of multiple PRACH transmissions according to an embodiment of the present disclosure.
  • FIG. 26 is a schematic diagram illustrating an RO group mapping based on candidate value of multiple PRACH transmissions according to an embodiment of the present disclosure.
  • FIG. 27 is a schematic diagram illustrating each candidate value of multiple PRACH occupy same number of ROs according to an embodiment of the present disclosure.
  • FIG. 28 is a schematic diagram illustrating each candidate value of multiple PRACH occupy same number of ROs according to an embodiment of the present disclosure.
  • FIG. 29 is a schematic diagram illustrating an SSB mapping to ROs based on ROs group according to an embodiment of the present disclosure.
  • FIG. 30 is a schematic diagram illustrating an SSB mapping to ROs based on ROs group according to an embodiment of the present disclosure.
  • FIG. 31 is a schematic diagram illustrating an SSB mapping to ROs based on ROs group according to an embodiment of the present disclosure.
  • FIG. 32 is a schematic diagram illustrating an SSB mapping to ROs based on ROs group according to an embodiment of the present disclosure.
  • FIG. 33 is a schematic diagram illustrating an SSB mapping to ROs based on ROs group according to an embodiment of the present disclosure.
  • FIG. 34 is a block diagram of a system for wireless communication according to an embodiment of the present disclosure.
  • FIG. 1 illustrates that, in some embodiments, a wireless communication device 10 in a network system 40 according to an embodiment of the present disclosure is disclosed.
  • the network system 40 includes the wireless communication device 10.
  • the wireless communication device 10 may be a user equipment (UE) .
  • the wireless communication device 10 may include a memory 12, a transceiver 13, and a processor 11 coupled to the memory 12 and the transceiver 13.
  • the processor 11 may be configured to implement proposed functions, procedures and/or methods described in this description. Layers of radio interface protocol may be implemented in the processor 11.
  • the memory 12 is operatively coupled with the processor 11 and stores a variety of information to operate the processor 11.
  • the transceiver 13 is operatively coupled with the processor 11, and the transceiver 13 transmits and/or receives a radio signal.
  • the processor 11 may include application-specific integrated circuit (ASIC) , other chipset, logic circuit and/or data processing device.
  • the memory 12 may include read-only memory (ROM) , random access memory (RAM) , flash memory, memory card, storage medium and/or other storage device.
  • the transceiver 13 may include baseband circuitry to process radio frequency signals.
  • modules e.g., procedures, functions, and so on
  • the modules can be stored in the memory 12 and executed by the processor 11.
  • the memory 12 can be implemented within the processor 11 or external to the processor 11 in which case those can be communicatively coupled to the processor 11 via various means as is known in the art.
  • the processor 11 is configured to perform the following methods.
  • the processor 21 is configured to perform the following methods.
  • FIG. 2 is a flowchart illustrating a power control method 200 of a radio network access procedure according to an embodiment of the present disclosure.
  • the power control method 200 includes: an operation 202, transmitting, by a wireless communication device, a physical channel information associated with power ramping/boosting when the wireless communication device determines a radio network access, wherein the physical channel information comprises a physical random access channel (PRACH) group, a message physical uplink shared channel (PUSCH) , a message PUSCH group, and/or a plurality of message groups.
  • the wireless communication device may be a user equipment (UE) .
  • UE user equipment
  • multiple msg1/msgA PRACH transmissions and multiple msgA/msg3 PUSCH transmissions with power ramping are proposed. This can provide a coverage enhancement for uplink (UL) transmission.
  • UL uplink
  • the wireless air interface can benefit from the more robust of PRACH and PUSCH, the less frequency and time resource overhead and the lower latency.
  • the wireless communication device is configured to transmit the PRACH group comprising a plurality of PRACHs with power ramping/boosting.
  • the power control method of the radio network access procedure further comprises determining, by the wireless communication device, a target power of the PRACH based one at least one of the following parameters: receivedTargetPower; DELTA_PREAMBLE; INTER_GROUP_PREAMBLE_POWER_RAMPING_COUNTER; INTER_GROUP_PREAMBLE_POWER_RAMPING_STEP;
  • the receivedTargetPower configured in higher parameters is an random access preamble power of the PRACH
  • the DELTA_PREAMBLE is a power offset related to a preamble format
  • the INTER_GROUP_PREAMBLE_POWER_RAMPING_COUNTER is an inter PRACH group power ramping counter
  • the INTER_GROUP_PREAMBLE_POWER_RAMPING_STEP configured in the higher parameters is an inter PRACH group power ramping step
  • the INTRA_GROUP_PREAMBLE_POWER_RAMPING_COUNTER is an intra PRACH group power ramping counter
  • the INTRA _GROUP_PREAMBLE_POWER_RAMPING_STEP configured in the higher parameters is an intra PRACH group power ramping step.
  • INTRA_GROUP_PREAMBLE_POWER_RAMPING_COUNTER is incremented by 1. In some embodiments, when the received target power of the next PRACH is calculated, if the next PRACH is in the different PRACH group as the previous PRACH and the beam of PRACH does not change, increment INTER_GROUP_PREAMBLE_POWER_RAMPING_COUNTER is incremented by 1.
  • INTER_GROUP_PREAMBLE_POWER_RAMPING_COUNTER is not incremented.
  • INTRA_GROUP_PREAMBLE_POWER_RAMPING_COUNTER is reset to 1.
  • INTRA_GROUP_PREAMBLE_POWER_RAMPING_COUNTER is stayed the same.
  • the wireless communication device determines the target power of the PRACH based on the following formula: receivedTargetPower + DELTA_PREAMBLE + (INTER_GROUP_PREAMBLE_POWER_RAMPING_COUNTER –1) ⁇ INTER_GROUP_PREAMBLE_POWER_RAMPING_STEP + (INTRA_GROUP_PREAMBLE_POWER_RAMPING_COUNTER –1) ⁇ INTRA _GROUP_PREAMBLE_POWER_RAMPING_STEP.
  • This can provide a coverage enhancement for uplink (UL) transmission.
  • the wireless air interface can benefit from the more robust of PRACH and PUSCH, the less frequency and time resource overhead and the lower latency.
  • received target powers of PRACHs comprises same intra-group beams and same inter-group beams. In some embodiments, received target powers of PRACHs comprises same intra-group beams and different inter-group beams. In some embodiments, a received target power of one PRACH of the PRACH group is based on a received target power of one PRACH of another PRACH group adjacent to the PRACH group. In some embodiments, the wireless communication device is configured to transmit one msg3 PUSCH, and a calculation of ramping/boosting power of the msg3 PUSCH is based on one of PRACHs in the PRACH group.
  • the wireless communication device is configured to transmit one msg3 PUSCH, and a calculation of ramping/boosting power of the physical msg3 PUSCH is based on one of PRACHs in the PRACH group or another PRACH group adjacent to the PRACH group.
  • the one of PRACHs in the PRACH group or the another PRACH group adjacent to the PRACH group is determined by a network or a default rule.
  • the one of PRACHs in the PRACH group or the another PRACH group adjacent to the PRACH group is determined by the network via the RAR.
  • the wireless communication device is configured to transmit a msg3 PUSCH group comprises a plurality of msg3 PUSCHs with power ramping/boosting. This can provide a coverage enhancement for uplink (UL) transmission.
  • the wireless air interface can benefit from the more robust of PRACH and PUSCH, the less frequency and time resource overhead and the lower latency.
  • an intra-group ramping/boosting power of the msg3 PUSCH in a msg3 PUSCH group is based on at least one of the following parameters: INTRA_GROUP_MSG3_POWER_RAMPING_COUNTER; and/or INTRA_GROUP_MSG3_POWER_RAMPING_STEP.
  • the intra-group ramping/boosting power of the msg3 PUSCH in the msg3 PUSCH group is based on the following formula: (INTRA_GROUP_MSG3_POWER_RAMPING_COUNTER –1) ⁇ INTRA_GROUP_MSG3_POWER_RAMPING_STEP.
  • a number of msg3 PUSCHs in the msg3 PUSCH group is indicated by the RAR.
  • the ramping/boosting power of the msg3 PUSCH in the msg3 PUSCH group is based on one of PRACHs in the PRACH group.
  • the wireless communication device transmits a plurality of msgA groups comprises a plurality of msgAs with power ramping/boosting
  • the wireless communication device transmits a plurality of PRACH groups comprising msg1 PRACHs with power ramping/boosting.
  • the wireless communication device determines a target power of the msgA PRACH and the msg1 PRACH according to at least one of the following parameters: receivedTargetPower; DELTA_PREAMBLE; INTER_GROUP_PREAMBLE_POWER_RAMPING_COUNTER;
  • This can provide a coverage enhancement for uplink (UL) transmission.
  • the wireless air interface can benefit from the more robust of PRACH and PUSCH, the less frequency and time resource overhead and the lower latency.
  • the receivedTargetPower configured in higher parameters is an random access preamble power of the PRACH
  • the DELTA_PREAMBLE is a power offset related to a preamble format
  • the INTER_GROUP_PREAMBLE_POWER_RAMPING_COUNTER is an inter PRACH group power ramping counter
  • the INTER_GROUP_PREAMBLE_POWER_RAMPING_STEP configured in the higher parameters is an inter PRACH group power ramping step
  • the INTRA_GROUP_PREAMBLE_POWER_RAMPING_COUNTER is an intra PRACH group power ramping counter
  • the INTRA _GROUP_PREAMBLE_POWER_RAMPING_STEP configured in the higher parameters is an intra PRACH group power ramping step
  • the INTER_GROUP_POWER_OFFSET_2STEP_RA is the difference of the inter-group ramping power step between msgA PRACH and msg1 PRACH, and/or the INTRA_GROUP_POWER_OFF
  • the wireless communication device determines the target power of the msgA PRACH and the msg1 PRACH according to the following formula: receivedTargetPower + DELTA_PREAMBLE + (INTER_GROUP_PREAMBLE_POWER_RAMPING_COUNTER –1) ⁇ INTER_GROUP_PREAMBLE_POWER_RAMPING_STEP + (INTRA_GROUP_PREAMBLE_POWER_RAMPING_COUNTER –1) ⁇ INTRA _GROUP_PREAMBLE_POWER_RAMPING_STEP + INTER_GROUP_POWER_OFFSET_2STEP_RA +INTRA_GROUP_POWER_OFFSET_2STEP_RA.
  • the RAR indicates a number of and/or a transmission gain of the msg3 PUSCHs. In some embodiments, the RAR indicates the number of and/or the transmission gain of the msg3 PUSCHs based on a signal quality of PRACH.
  • the signal quality of PRACH comprises a path loss, reference signal received power (RSRP) , a reference signal received quality (RSRQ) , and/or a signal-to-interference-plus-noise ratio (SINR) . This can provide a coverage enhancement for uplink (UL) transmission.
  • RSRP reference signal received power
  • RSRQ reference signal received quality
  • SINR signal-to-interference-plus-noise ratio
  • an initial transmission power of the physical channel information is associated with an SSB-RSRP.
  • different levels of SSB-RSRP have different initial power boosting.
  • the wireless communication device determines a target power of PRACH based on at least one of the following parameters: receivedTargetPower; DELTA_PREAMBLE; PREAMBLE_POWER_RAMPING_COUNTER; PREAMBLE_POWER_RAMPING_STEP; POWER_OFFSET_2STEP_RA; and/or PREAMBLE_POWER_BOOSTING.
  • the receivedTargetPower configured in higher parameters is an random access preamble power of the PRACH
  • the DELTA_PREAMBLE is a power offset related to a preamble format
  • the PREAMBLE_POWER_RAMPING_COUNTER is a PRACH group power ramping counter
  • the PREAMBLE_POWER_RAMPING_STEP configured in the higher parameters is a PRACH group power ramping step
  • POWER_OFFSET_2STEP_RA is set as (PREAMBLE_POWER_RAMPING_COUNTER –1) ⁇ (MSGA_PREAMBLE_POWER_RAMPING_STEP –PREAMBLE_POWER_RAMPING_STEP)
  • the PREAMBLE_POWER_BOOSTING is associated with each level of SSB-RSRP.
  • PREAMBLE_RECEIVED_TARGET_POWER receivedTargetPower + DELTA_PREAMBLE + (PREAMBLE_POWER_RAMPING_COUNTER –1) ⁇ PREAMBLE_POWER_RAMPING_STEP +POWER_OFFSET_2STEP_RA + PREAMBLE_POWER_BOOSTING.
  • This can provide a coverage enhancement for uplink (UL) transmission.
  • the wireless air interface can benefit from the more robust of PRACH and PUSCH, the less frequency and time resource overhead and the lower latency.
  • an association relationship between the initial transmission power of the physical channel information and the SSB-RSRP is pre-defined or configured.
  • an initial transmission power of the physical channel information is associated with a repetition number of PRACH transmission.
  • different numbers of PRACH repetitions have different initial power boosting.
  • the wireless communication device determines a target power of PRACH based on at least one of the following parameters: receivedTargetPower; DELTA_PREAMBLE; PREAMBLE_POWER_RAMPING_COUNTER; PREAMBLE_POWER_RAMPING_STEP; POWER_OFFSET_2STEP_RA; and/or PREAMBLE_POWER_BOOSTING.
  • the receivedTargetPower configured in higher parameters is an random access preamble power of the PRACH
  • the DELTA_PREAMBLE is a power offset related to a preamble format
  • the PREAMBLE_POWER_RAMPING_COUNTER is a PRACH group power ramping counter
  • the PREAMBLE_POWER_RAMPING_STEP configured in the higher parameters is a PRACH group power ramping step
  • POWER_OFFSET_2STEP_RA is set as (PREAMBLE_POWER_RAMPING_COUNTER –1) ⁇ (MSGA_PREAMBLE_POWER_RAMPING_STEP –PREAMBLE_POWER_RAMPING_STEP)
  • the PREAMBLE_POWER_BOOSTING is associated with the repetition number of PRACH.
  • an association relationship between the initial transmission power of the physical channel information and the repetition number of PRACH transmission is pre-defined or configured. This can provide a coverage enhancement for uplink (UL) transmission.
  • the wireless air interface can benefit from the more robust of PRACH and PUSCH, the less frequency and time resource overhead and the lower latency.
  • Proposal 1 After the UE measures SSBs and before the UE monitors RAR, the UE transmits the first PRACH group including multiple PRACHs with power ramping. Meanwhile, it is proposed that after the UE transmits a PRACH group and does not receive RAR, the UE transmits the second PRACH group including multiple PRACHs with power ramping.
  • the UE determines the received target power of PRACH according to the following formula: receivedTargetPower + DELTA_PREAMBLE + (INTER_GROUP_PREAMBLE_POWER_RAMPING_COUNTER –1) ⁇ INTER_GROUP_PREAMBLE_POWER_RAMPING_STEP + (INTRA_GROUP_PREAMBLE_POWER_RAMPING_COUNTER –1) ⁇ INTRA _GROUP_PREAMBLE_POWER_RAMPING_STEP, where receivedTargetPower configured in higher parameters is the random access preamble power of PRACH which is the first PRACH in the first PRACH group, DELTA_PREAMBLE is the power offset related to preamble format, INTER_PREAMBLE_POWER_RAMPING_COUNTER is the inter PRACH group power ramping counter, INTER_PREAMBLE_POWER_RAMPING_STEP configured in higher parameters is the inter PRACH group power ramping step, INTRA_PREAMBLE_POWER_RAMP
  • Proposal 2 After the UE transmits the PRACH group and receives RAR, the UE transmits one msg3 PUSCH and the calculation of ramping power of the msg3 PUSCH is based on one of PRACHs in the PRACH group.
  • the second method is to set a default rule. For example, the ramping power is based on the first PRACH or based on the last PRACH in the last PRACH group. This mechanism can also use for Type-2 random access procedure. This can provide a coverage enhancement for uplink (UL) transmission.
  • the wireless air interface can benefit from the more robust of PRACH and PUSCH, the less frequency and time resource overhead and the lower latency.
  • Proposal 3 After the UE receives RAR, the UE transmits the msg3 PUSCH group including multiple msg3 PUSCHs with intra-group power ramping.
  • the number of msg3 PUSCH in the msg3 PUSCH group can be the same as or different from that of PRACH in the PRACH group. Meanwhile, the number of msg3 PUSCH can be implicitly or explicitly indicated by a signaling carried by RAR.
  • the wireless air interface can benefit from the more robust of PRACH and PUSCH, the less frequency and time resource overhead and the lower latency.
  • Proposal 4 The UE transmits the multipale msgA groups including the multiple msgAs with power ramping and if the UE does not receive RAR and the number of the msgA groups reaches a certain threshold the UE transmits the multiple PRACH groups including msg1 PRACHs with power ramping.
  • the UE determines the received target power of the msgA PRACH and the msg1 PRACH according to the following formula: receivedTargetPower + DELTA_PREAMBLE + (INTER_GROUP_PREAMBLE_POWER_RAMPING_COUNTER –1) ⁇ INTER_GROUP_PREAMBLE_POWER_RAMPING_STEP + (INTRA_GROUP_PREAMBLE_POWER_RAMPING_COUNTER –1) ⁇ INTRA _GROUP_PREAMBLE_POWER_RAMPING_STEP + INTER_GROUP_POWER_OFFSET_2STEP_RA +INTRA_GROUP_POWER_OFFSET_2STEP_RA, where INTER_GROUP_POWER_OFFSET_2STEP_RA is set as (INTER_GROUP_PREAMBLE_POWER_RAMPING_COUNTER –1) ⁇ (INTER_GROUP_MSGA_PREAMBLE_POWER_RAMPING_STEP
  • Proposal 5 The signaling carried by RAR implicitly or explicitly indicates the number of and/or the transmission gain of the msg3 PUSCHs according to the signal quality of PRACH such as path loss, RSRP, SINR and so on. This can provide a coverage enhancement for uplink (UL) transmission.
  • the wireless air interface can benefit from the more robust of PRACH and PUSCH, the less frequency and time resource overhead and the lower latency.
  • Proposal 6 The initial transmission power is associated with SSB-RSRP and different levels of SSB-RSRP have different initial power boosting.
  • This association relationship can be pre-defined or configured. This can provide a coverage enhancement for uplink (UL) transmission.
  • the wireless air interface can benefit from the more robust of PRACH and PUSCH, the less frequency and time resource overhead and the lower latency.
  • Proposal 7 The initial transmission power is associated with the repetition number of PRACH transmission and the different number of PRACH repetition have different initial power boosting.
  • This can provide a coverage enhancement for uplink (UL) transmission.
  • This association relationship can be pre-defined or configured.
  • the wireless air interface can benefit from the more robust of PRACH and PUSCH, the less frequency and time resource overhead and the lower latency.
  • the UE determines the received target power of PRACH according to the following formula: receivedTargetPower + DELTA_PREAMBLE + (PREAMBLE_POWER_RAMPING_COUNTER –1) ⁇ PREAMBLE_POWER_RAMPING_STEP, where receivedTargetPower configured in higher parameters is the random access preamble power of PRACH, DELTA_PREAMBLE is the power offset related to preamble format, PREAMBLE_POWER_RAMPING_COUNTER is the PRACH power ramping counter, PREAMBLE_POWER_RAMPING_STEP configured in higher parameters is the PRACH power ramping step.
  • FIG. 3 shows an example of the received target power of PRACH, where ⁇ P denotes as PREAMBLE_POWER_RAMPING_STEP. This can provide a coverage enhancement for uplink (UL) transmission.
  • the UE transmits the first PRACH group including multiple PRACHs with power ramping. Meanwhile, it is proposed that after the UE transmits a PRACH group and does not receive RAR, the UE transmits the second PRACH group including multiple PRACHs with power ramping.
  • Each PRACH in a PRACH group adopts the same preamble format and sequence.
  • the UE determines the received target power of PRACH according to the following formula: receivedTargetPower + DELTA_PREAMBLE + (INTER_GROUP_PREAMBLE_POWER_RAMPING_COUNTER –1) ⁇ INTER_GROUP_PREAMBLE_POWER_RAMPING_STEP + (INTRA_GROUP_PREAMBLE_POWER_RAMPING_COUNTER –1) ⁇ INTRA _GROUP_PREAMBLE_POWER_RAMPING_STEP, where receivedTargetPower configured in higher parameters is the initial received target power of PRACH which is the first PRACH in the first PRACH group, DELTA_PREAMBLE is the power offset related to preamble format, INTER_PREAMBLE_POWER_RAMPING_COUNTER is the inter PRACH group power ramping counter, INTER_PREAMBLE_POWER_RAMPING_STEP configured in higher parameters is the inter PRACH group power ramping step, INTRA_PREAMBLE_POWER_RAMPING_
  • the first method is set INTRA_GROUP_PREAMBLE_POWER_RAMPING_COUNTER to 0.
  • the second method is set INTRA_GROUP_PREAMBLE_POWER_RAMPING_COUNTER without change.
  • This mechanism can also use for Type-2 random access procedure. Meanwhile, this mechanism can improve the robust of PRACH such that the time of multiple PRACH transmission can be reduced. This can provide a coverage enhancement for uplink (UL) transmission. The frequency and time resources can be saved, and the latency can be lower.
  • the UE transmits PRACHs in PRACH group1 and in PRACH group2 on beam2.
  • PRACH14 has the same calculation procedure.
  • PRACH24 has the same calculation procedure. This can provide a coverage enhancement for uplink (UL) transmission.
  • the wireless air interface can benefit from the more robust of PRACH and PUSCH, the less frequency and time resource overhead and the lower latency.
  • FIG. 5 shows an example of the received target powers of PRACHs with the same intra-group and inter-group beams.
  • the second method is used to handle intra-group counter in this example.
  • the UE transmits PRACHs in PRACH group1 and in PRACH group2 on beam2.
  • PRACH24 has the same calculation procedure. This can provide a coverage enhancement for uplink (UL) transmission.
  • the wireless air interface can benefit from the more robust of PRACH and PUSCH, the less frequency and time resource overhead and the lower latency.
  • FIG. 6 shows an example of the received target powers of PRACHs with the same intra-group beams and the different inter-group beams.
  • the first method is used to handle intra-group counter in this example.
  • the UE transmits PRACHs in PRACH group1 on beam2 and transmits PRACHs in PRACH group2 on beam4.
  • PRACH24 has the same calculation procedure. This can provide a coverage enhancement for uplink (UL) transmission.
  • the wireless air interface can benefit from the more robust of PRACH and PUSCH, the less frequency and time resource overhead and the lower latency.
  • FIG. 7 shows an example of the received target powers of PRACHs with the same intra-group beams and the different inter-group beams.
  • the first method is used to handle intra-group counter in this example.
  • the UE transmits PRACHs in PRACH group1 on beam2 and transmits PRACHs in PRACH group2 on beam4.
  • PRACH24 has the same calculation procedure. This can provide a coverage enhancement for uplink (UL) transmission.
  • the wireless air interface can benefit from the more robust of PRACH and PUSCH, the less frequency and time resource overhead and the lower latency.
  • the UE determines the transmission power of msg3 PUSCH according to the following formula: [dBm] , where P PUSCH, c is the received target power of PUSCH which is composed of the sum of a component P O_NOMINAL_PUSCH, c and a component P O_UE_PUSCH, c .
  • P O_UE_PUSCH, c 0
  • P O_NOMINAL_PUSCH, c P O_PRE + ⁇ PREMBLE_MSG3
  • P O_PRE is provided by higher parameter receivedTargetPower
  • ⁇ PREAMBLE_Msg3 is provided by higher parameter msg3-DeltaPreamble.
  • f c (i) is the power adjustment of PUSCH.
  • f c ⁇ P rampup where ⁇ P rampup is the total ramping power of PRACH. That means ⁇ P rampup is the difference between the received target power of the initial PRACH and that of the last PRACH before received RAR.
  • FIG. 8 shows an example of the target power of msg3 PUSCH. In FIG. 8, the influence of resource bandwidth and transmission format on transmission power is ignored.
  • the UE transmits one msg3 PUSCH and the calculation of ramping power of the msg3 PUSCH is based on one of PRACHs in the last PRACH group.
  • the last PRACH group means that after the UE transmits this PRACH group then the UE receives RAR.
  • the total ramping power of PRACH is the difference between the first PRACH in the initial PRACH group and the PRACH in the last PRACH group.
  • the initial PRACH group means that after SSB measurement then this PRACH group is transmitted.
  • the start point of ⁇ PREAMBLE_Msg3 application is the PRACH in the last PRACH group.
  • the first method is determined by network. For example, the signaling that indicates which one of PRACHs in the last PRACH group is carried by RAR or configured in higher parameters.
  • the second method is to set a default rule. For example, the ramping power is based on the first PRACH or based on the last PRACH in the last PRACH group.
  • This mechanism can also use for Type-2 random access procedure. This can provide a coverage enhancement for uplink (UL) transmission.
  • UL uplink
  • the wireless air interface can benefit from the more robust of PRACH and PUSCH, the less frequency and time resource overhead and the lower latency.
  • FIG. 9 shows an example of the ramping power of the msg3 PUSCH.
  • the UE does not receive RAR and then transmits PRACH group2.
  • PRACH group2 is the last PRACH group.
  • the influence of resource bandwidth and transmission format on power is ignored.
  • This can provide a coverage enhancement for uplink (UL) transmission.
  • the wireless air interface can benefit from the more robust of PRACH and PUSCH, the less frequency and time resource overhead and the lower latency.
  • the UE transmits the msg3 PUSCH group including multiple msg3 PUSCHs with intra-group power ramping.
  • the number of msg3 PUSCH in the msg3 PUSCH group can be the same as or different from that of PRACH in the PRACH group. Meanwhile, the number of msg3 PUSCH can be implicitly or explicitly indicated by a signaling carried by RAR.
  • Each msg3 PUSCH in a msg3 PUSCH group carries the same contents.
  • the first method is to define the intra-group ramping power of the msg3 PUSCH according to the following formula: (INTRA_GROUP_MSG3_POWER_RAMPING_COUNTER –1) ⁇ INTRA_GROUP_MSG3_POWER_RAMPING_STEP.
  • the calculation of ramping power of the msg3 PUSCH is according to the above embodiment. This method can also use for the scenario where the UE transmits single PRACH and multiple msg3 PUSCHs.
  • the second method is to define several ramping power whose calculation is based on the different PRACH in the PRACH group.
  • the signaling that indicates which PRACHs in the last PRACH group is carried by RAR or configured in higher parameters. This mechanism can also use for Type-2 random access procedure.
  • this mechanism can improve the robust of msg3/msgA PUSCH such that the time of multiple msg3/msgA PUSCH transmission can be reduced.
  • the frequency and time resources can be saved, and the latency can be lower.
  • This can provide a coverage enhancement for uplink (UL) transmission.
  • counter 1 where counter is INTRA_GROUP_MSG3_POWER_RAMPING_COUNTER
  • counter 2 where ⁇ P MSG3 is INTRA_GROUP_MSG3_POWER_RAMPING_STEP.
  • counter 3
  • counter 1 where counter is INTRA_GROUP_MSG3_POWER_RAMPING_COUNTER,
  • the other msg3 PUSCHs have the similar calculation.
  • the wireless air interface can benefit from the more robust of PRACH and PUSCH, the less frequency and time resource overhead and the lower latency. This can provide a coverage enhancement for uplink (UL) transmission.
  • FIG. 11 shows an example of an example of the ramping power of the msg3 PUSCH in the msg3 PUSCH group if the second calculation method is adopted.
  • the wireless air interface can benefit from the more robust of PRACH and PUSCH, the less frequency and time resource overhead and the lower latency. This can provide a coverage enhancement for uplink (UL) transmission.
  • the UE tries to transmit the msg1 PRACH in Type-1 random access procedure.
  • the received target power of PRACH is determined according to the following formula: receivedTargetPower + DELTA_PREAMBLE + (PREAMBLE_POWER_RAMPING_COUNTER –1) ⁇ PREAMBLE_POWER_RAMPING_STEP +POWER_OFFSET_2STEP_RA, where POWER_OFFESET_2STEP_RA whose initial value is 0 dB is power offset between msgA PRACH and msg1 PRACH.
  • POWER_OFFSET_2STEP_RA is set as (PREAMBLE_POWER_RAMPING_COUNTER –1) ⁇ (MSGA_PREAMBLE_POWER_RAMPING_STEP –PREAMBLE_POWER_RAMPING_STEP) .
  • the UE transmits the multiple msgA groups including the multiple msgAs with power ramping and if the UE does not receive RAR and the number of the msgA groups reaches a certain threshold the UE transmits the multiple PRACH groups including msg1 PRACHs with power ramping.
  • the UE determines the received target power of the msgA PRACH and the msg1 PRACH according to the following formula: receivedTargetPower + DELTA_PREAMBLE + (INTER_GROUP_PREAMBLE_POWER_RAMPING_COUNTER –1) ⁇ INTER_GROUP_PREAMBLE_POWER_RAMPING_STEP + (INTRA_GROUP_PREAMBLE_POWER_RAMPING_COUNTER –1) ⁇ INTRA _GROUP_PREAMBLE_POWER_RAMPING_STEP + INTER_GROUP_POWER_OFFSET_2STEP_RA +INTRA_GROUP_POWER_OFFSET_2STEP_RA, where INTER_POWER_OFFESET_2STEP_RA whose initial value is 0 dB is power offset between msgA PRACH and msg1 PRACH in different groups and INTRA_POWER_OFFESET_2STEP_RA whose initial value is 0 dB is
  • INTER_GROUP_POWER_OFFSET_2STEP_RA is set as (INTER_GROUP_PREAMBLE_POWER_RAMPING_COUNTER –1) ⁇ (INTER_GROUP_MSGA_PREAMBLE_POWER_RAMPING_STEP –INTER_GROUP_PREAMBLE_POWER_RAMPING_STEP) and INTRA_GROUP_POWER_OFFSET_2STEP_RA is set as (INTRA_GROUP_PREAMBLE_POWER_RAMPING_COUNTER –1) ⁇ (INTRA_GROUP_MSGA_PREAMBLE_POWER_RAMPING_STEP –INTRA_GROUP_PREAMBLE_POWER_RAMPING_STEP) .
  • the wireless air interface can benefit from the more robust of PRACH and PUSCH, the less frequency and time resource overhead and the lower latency. This can provide a coverage enhancement for uplink (INTER_GROUP_MSGA_PREAMBLE_POWER_RAMP
  • the intra-group power ramping step of the PRACH in the msgA group is different from the intra-group power ramping step of the PRACH in the msg1 group
  • the inter-group power ramping step of the PRACH in the msgA group is different from the inter-group power ramping step of the PRACH in the msg1 group
  • the wireless air interface can benefit from the more robust of PRACH and PUSCH, the less frequency and time resource overhead and the lower latency. This can provide a coverage enhancement for uplink (UL) transmission.
  • the UE transmits msg3 PUSCH.
  • the msg3 PUSCH can be transmitted only once.
  • the transmitting beam of msg3 PUSCH is determined by the UE implementation. Usually, the same beam as PRACH transmission is used.
  • the signaling carried by RAR implicitly or explicitly indicates the number of and/or the transmission gain of the msg3 PUSCHs according to the signal quality of PRACH such as path loss, RSRP, SINR and so on. This can provide a coverage enhancement for uplink (UL) transmission.
  • Table 1 shows an example of the signaling which is ‘PUSCH repetition number’ filed with 2 bits in RAR indicates the number of the msg3 PUSCHs. Assuming this filed is ‘10’ , the UE transmits three msg3 PUSCH and then the UE monitors msg4. The direction and gain of the msg3 PUSCH beams are determined by the UE implementation. The UE can transmit msg3 PUSCHs with different beam directions and higher beam gains to perform beam refinement, as shown in FIG. 14. This can reduce latency and improve performance. This can provide a coverage enhancement for uplink (UL) transmission.
  • UL uplink
  • the initial transmission power is associated with SSB-RSRP and different levels of SSB-RSRP have different initial power boosting.
  • This association relationship can be pre-defined or configured, as shown in Table 2.
  • PREAMBLE_POWER_BOOSTING power_boosting_0.
  • PREAMBLE_POWER_BOOSTING power_boosting_1.
  • the wireless air interface can benefit from the more robust of PRACH and PUSCH, the less frequency and time resource overhead and the lower latency. This can provide a coverage enhancement for uplink (UL) transmission.
  • PREAMBLE_POWER_BOOSTING can be expressed as (POWER_BOOSTING_COUNTER –1) ⁇ POWER_BOOSTING_STEP, where POWER_BOOSTING_STEP can be configured in higher parameters and each level of SSB-RSRP can be associated with POWER_BOOSTING_COUNTER.
  • POWER_BOOSTING_COUNTER C1.
  • SBFD sub-band full duplex
  • the wireless air interface can benefit from the more robust of PRACH and PUSCH, the less frequency and time resource overhead and the lower latency. This can provide a coverage enhancement for uplink (UL) transmission.
  • the initial transmission power is associated with the repetition number of PRACH transmission and the different number of PRACH repetition have different initial power boosting.
  • This association relationship can be pre-defined or configured, as shown in Table 4.
  • PREAMBLE_POWER_BOOSTING power_boosting_0.
  • PREAMBLE_POWER_BOOSTING power_boosting_1.
  • the wireless air interface can benefit from the more robust of PRACH and PUSCH, the less frequency and time resource overhead and the lower latency. This can provide a coverage enhancement for uplink (UL) transmission.
  • PREAMBLE_POWER_BOOSTING can be expressed as (POWER_BOOSTING_COUNTER –1) ⁇ POWER_BOOSTING_STEP, where POWER_BOOSTING_STEP can be configured in higher parameters and the repetition number of PRACH can be associated with POWER_BOOSTING_COUNTER.
  • SBFD sub-band full duplex
  • the wireless air interface can benefit from the more robust of PRACH and PUSCH, the less frequency and time resource overhead and the lower latency. This can provide a coverage enhancement for uplink (UL) transmission.
  • FIG. 15 is a flowchart illustrating a wireless communication method 1500 of coverage enhancement according to an embodiment of the present disclosure.
  • the power control method 1500 includes: an operation 1502, determining, by a wireless communication device, a random access channel occasion (RO) group pattern or a group of ROs within a time unit and/or with same/different frequency resources through a RO group information.
  • the wireless communication device may be a user equipment (UE) .
  • the RO group information is indicated in a system information.
  • the RO group information comprises at least one of the following parameters: a number of ROs within a group or a set of groups, the RO group pattern, a starting of RO groups, an end of the ROs group, a hopping pattern, and/or a hopping size.
  • the RO group information comprises a predefined rule for RO group mapping within a periodicity.
  • the RO group is determined based on the number or the maximum number of multiple PRACH transmissions, and/or within the RO group, more than one starting point or reference point is defined, each starting point or reference point is associated to a multiple PRACH transmission level.
  • the RO group is determined based on the number and/or the maximum number and/or the candidate number of multiple PRACH transmissions, time domain based mapping first in order of the candidate number of multiple PRACH transmission, then frequency domain mapping.
  • FIG. 16 is a flowchart illustrating a wireless communication method 1600 of coverage enhancement according to an embodiment of the present disclosure.
  • the power control method 1600 includes: an operation 1602, determining, by a wireless communication device, a mapping rule between multiple PRACH transmissions and SSBs, wherein an SSB mapping to a RO group or to a set of RO groups is with different time and/or same/different frequency domain.
  • the wireless communication device may be a user equipment (UE) .
  • FIG. 17 is a flowchart illustrating a wireless communication method 1700 of coverage enhancement according to an embodiment of the present disclosure.
  • the power control method 1700 includes: an operation 1702, determining, by a wireless communication device, an RAR window for multiple PRACH transmissions, wherein a start point of the RAR window is based on a control information.
  • the wireless communication device may be a user equipment (UE) .
  • the control information comprises at least one of the following: a first symbol of an earliest CORESET, which the wireless communication device is configured to receive PDCCH for RACH; the earliest CORESET, which the wireless communication device is configured to receive PDCCH for multiple RACHs; the first symbol of the first PDCCH, which the wireless communication device is configured for RACH, that is at least one symbol after the last symbol of the last valid PRACH occasion within a RO group; the last symbol of the last valid PRACH occasion or a last symbol of the pre-defined valid PRACH occasion of multiple PRACH transmission; and/or the last symbol of the last valid RACH occasions of the last ROs group within a set of ROs group, where the ROs group or the set of ROs groups are associated with multiple PRACH transmissions.
  • UL uplink
  • FIG. 18 is a flowchart illustrating a wireless communication method 1800 of coverage enhancement according to an embodiment of the present disclosure.
  • the power control method 1800 includes: an operation 1802, determining, by a wireless communication device, a mapping rule between multiple PRACH transmissions and SSBs, wherein an SSB mapping to a RO group or to a set of RO groups is with different time and/or same/different frequency domain.
  • the wireless communication device may be a user equipment (UE) .
  • the RA-RNTI for an attempt of multiple PRACH transmission is based on one RO within a ROs group or a set of ROs groups, the one RO is the first RO or the last RO or any one of RO or a fixed RO within the ROs group, the ROs group or the set of ROs groups which is used for multiple PRACH transmission.
  • the coverage enhanced methods for PRACH channel better coverage can be achieved for uplink channel. This can provide a coverage enhancement for uplink (UL) transmission.
  • PRACH coverage enhancement has not been addressed, despite being identified as one of the bottleneck channels in the corresponding studies.
  • PRACH transmission is very important for many procedures, e.g., initial access and beam failure recovery.
  • This disclosure proposes some coverage enhanced methods for PRACH channel, with the coverage enhanced methods for PRACH channel, better coverage can be achieved for uplink channel.
  • the ROs group information can be indicated by system information, e.g. SIB1 or MIB or others system information, at least one of the following parameters can be indicated: the number of ROs (the number of ROs can be one or more than one. ) within a group or a set of groups, the pattern of ROs group (e.g.
  • TDM-ed or FDM-ed or first TDM-ed then FDM-ed or first FDM-ed then TDM-ed) the starting of the RO groups, the end of the ROs group, the hopping pattern and/or hopping size.
  • Other way can be predefined a rule for ROs group mapping within a periodicity, with this way, some pre-defined pattern can be determined, one or more than one multiple PRACH transmission levels can be considered. With the coverage enhanced methods for PRACH channel, better coverage can be achieved for uplink channel. This can provide a coverage enhancement for uplink (UL) transmission.
  • UL uplink
  • the ROs group or ROs group pattern can be indicated by system information, e.g. SIB1, a new field in SIB1 or other system information or MIB can be used to indicate the ROs groups pattern, the information of ROs groups can be included at least one of following parameters: the number of ROs (the number of ROs can be one or more than one. ) within a group or a set of groups, the pattern of ROs group (e.g. TDM-ed or FDM-ed or first TDM-ed then FDM-ed or first FDM-ed then TDM-ed) , the starting of the RO groups, the end of the ROs group, the hopping pattern and/or hopping size.
  • the coverage enhanced methods for PRACH channel better coverage can be achieved for uplink channel. This can provide a coverage enhancement for uplink (UL) transmission.
  • the ROs group can be combination coding with RACH resources table which defined in TS 38.211. A new or a new set of columns can be added into the RACH resources table, then using the 8 bits in SIB1 to indicate the ROs group.
  • a RO group configuration table can be defined and each index or state of the table can be included at least one of the following parameters: the number of ROs (the number of ROs can be one or more than one. ) within a group or a set of groups, the pattern of ROs group (e.g.
  • TDM-ed or FDM-ed or first TDM-ed then FDM-ed or first FDM-ed then TDM-ed) the starting of the RO groups, the end of the ROs group, the hopping pattern and/or hopping size, the a new column can be added into the RACH configuration table, and the new column is used to indicate the table (RO group configuration table) index or state. This can provide a coverage enhancement for uplink (UL) transmission.
  • an information which is used to indicate the state of multiple PRACH transmission is carried by system information, e.g. SIB1, the information can be used to indicate the on or off state (e.g. 1bit can be used, “0” can be used to indicate the state of on or off, “1” can be used to indicate the state of off or on) of multiple PRACH transmission, state of off means multiple PRACH transmission is enabled, state of on means multiple PRACH transmission is enabled.
  • the candidate of multiple PRACH transmission level can be ⁇ 2, 4, 8 ⁇ or (2, 4, 8, 16) or ⁇ 2 ⁇ or ⁇ 4 ⁇ or ⁇ 8 ⁇ or ⁇ 2, 4 ⁇ or ⁇ 4, 8 ⁇ .
  • an information which is used to indicate the level of multiple PRACH transmission or candidate value of multiple PRACH transmission can be indicated by system information, e.g. by SIB1, the maximum candidate value of multiple PRACH transmission is indicated, and the candidate value which is smaller than the maximum candidate value also indicates implicitly, for instance, when the maximum number of PRACH transmission is indicated as 8 (indicate 8 directly or based on an exponential power of 2, likely 2 ⁇ 3. ) , then 2 and/or 4 or any integer value smaller than 8 can be regarded as the candidate values of multiple PRACH transmissions. This can provide a coverage enhancement for uplink (UL) transmission.
  • system information e.g. by SIB1
  • SIB1 system information which is used to indicate the level of multiple PRACH transmission or candidate value of multiple PRACH transmission
  • the candidate value which is smaller than the maximum candidate value also indicates implicitly, for instance, when the maximum number of PRACH transmission is indicated as 8 (indicate 8 directly or based on an exponential power of 2, likely 2 ⁇ 3. ) , then 2 and/or 4 or any integer value smaller than
  • Method 2 The RO group determined based on the number or the maximum number of multiple PRACH transmissions, and/or within a RO group, more than one starting point or reference point can be defined, each starting point or reference point can be associated to a multiple PRACH transmission level, as show in figure 19.
  • the Group 1 includes ⁇ RO1, RO2, RO3, RO4, RO5, RO, RO7, RO8 ⁇ , more than one groups within group1, e.g. Group 2, Group 3 and Group 4.
  • Group 2 includes ⁇ RO3, RO4 ⁇
  • Group 3 includes ⁇ RO5, RO6, RO7, RO8 ⁇
  • Group 4 includes ⁇ RO7, RO8 ⁇ .
  • each starting point or reference point can be associated to a multiple PRACH transmission level, for instance, the starting point or reference point within a group 1 can set as ⁇ RO1, RO3, RO5, RO7 ⁇ , then each starting point can be associated to a multiple PRACH transmissions level, starting point or reference point of RO1is associated to 8 repetition of PRACH (amultiple PRACH transmissions level) , starting point or reference point of RO3 is associated to 2 repetition of PRACH, starting point or reference point of RO5 is associated to 4 repetition of PRACH, starting point or reference point of RO7 is associated to 2 repetition of PRACH.
  • the ROs within the RO group have the same frequency resource and/or have different time resource. With the coverage enhanced methods for PRACH channel, better coverage can be achieved for uplink channel. This can provide a coverage enhancement for uplink (UL) transmission.
  • the RO group determined based on the number or the maximum number of multiple PRACH transmission, and/or within a RO group, more than one starting point or reference point can be defined, each starting point or reference point can be associated to a multiple PRACH transmission level, as show in figure 20.
  • the Group 1 includes ⁇ RO1, RO2, RO3, RO4, RO5, RO, RO7, RO8 ⁇ , more than one groups within group1, e.g. Group 2, Group 3 and Group 4.
  • Group 2 includes ⁇ RO3, RO4, RO5, RO6 ⁇
  • Group 3 includes ⁇ RO7, RO8 ⁇ .
  • each starting point or reference point can be associated to a multiple PRACH transmission level, for instance, the starting point or reference point within a group 1 can set as ⁇ RO1, RO3, RO7 ⁇ , then each starting point can be associated to a multiple PRACH transmissions level, starting point or reference point of RO1is associated to 8 repetition of PRACH, starting point or reference point of RO3 is associated to 4 repetition of PRACH, starting point or reference point of RO7 is associated to 2 repetition of PRACH.
  • This can provide a coverage enhancement for uplink (UL) transmission.
  • the RO group determined based on the number or the maximum number of multiple PRACH transmission, and the RO within a ROs group have the same or different frequency resources and time resources, as shown in figure 21 and figure 22 respectively. This can provide a coverage enhancement for uplink (UL) transmission.
  • UL uplink
  • Method 3 The RO group determined based on the number and/or the maximum number and/or the candidate number of multiple PRACH transmissions, time domain based mapping first in order of the candidate number of multiple PRACH transmission, then frequency domain mapping, as show in figure 23.
  • all of the candidate value of multiple PRACH transmission level need to be mapped at least once in time domain.
  • This can provide a coverage enhancement for uplink (UL) transmission.
  • the RO group determined based on the number and/or the maximum number and/or the candidate number of multiple PRACH transmissions, frequency domain based mapping first in order of the candidate number of multiple PRACH transmission, then time domain mapping. This can provide a coverage enhancement for uplink (UL) transmission.
  • UL uplink
  • the time domain resources of ROs within a time duration (the time duration can be pre-defined or configured or a fixed value, e.g. 160ms) is not enough to mapping all of the candidate value of multiple PRACH transmission, then at least the maximum number of candidate multiple PRACH transmissions need to map to the time domain ROs once, then the remaining candidate values of multiple PRACH transmissions can be mapped to the frequency resources ROs or FDM-ed resources ROs based on the time domain ROs, as show in figure 24, we assume the candidate number of multiple PRACH transmissions level are ⁇ 2, 4, 8 ⁇ , then the first RO group is determined based on the maximum number of multiple PRACH transmission level, e.g.
  • the pattern can be pre-defined or configured or based on the candidate level of multiple PRACH transmission in order.
  • the pattern can be configured (via system information, e.g. SIB1 or pre-defined) as ⁇ 8, 2, 4, 2 ⁇ , then the mapping pattern can be shown in figure 24, first mapping 8 ROs in time domain (group1 ) , then mapping 2 FDM-ed ROs in frequency domain (group 2) , ising, the pattern mapping can be cycling within all of the ROs or the valid ROs or the available ROs. This can provide a coverage enhancement for uplink (UL) transmission.
  • system information e.g. SIB1 or pre-defined
  • the pattern is determined based on the candidate values (from big to small) of the multiple PRACH transmissions level, each one of the candidate value of multiple PRACH transmission can be mapped once, and do cycling within all of the ROs or the valid ROs or the available ROs, when the ROs with same frequency domain resources and different time domain resources is not enough to map the candidate value of multiple PRACH transmissions, then the candidate multiple PRACH transmissions level can be postponed to the next and the corresponding ROs with same frequency domain resources and different time domain can be used to map a suitable candidate value of multiple PRACH transmissions within the candidates multiple PRACH transmission levels.
  • the candidate of multiple PRACH transmissions is configured as ⁇ 2, 4, 8 ⁇ , and within a time duration, the ROs with different time entity is not enough to map all of the candidate values of multiple PRACH transmissions, then mapping the maximum candidate of multiple PRACH transmission first, then the remaining candidate multiple transmissions, and all of the candidate values of multiple PRACH transmissions are mapped in cycling.
  • This can provide a coverage enhancement for uplink (UL) transmission.
  • the pattern is determined based on the candidate values (from small to big) of the multiple PRACH transmissions level, each one of the candidate value of multiple PRACH transmission can be mapped once, and do cycling within all of the ROs or the valid ROs or the available ROs when the ROs with same frequency domain resources and different time domain resources is not enough to map the candidate value of multiple PRACH transmissions, then the candidate multiple PRACH transmissions level can be postponed to the next and the corresponding ROs with same frequency domain resources and different time domain can be used to map a suitable candidate value of multiple PRACH transmissions within the candidates multiple PRACH transmission levels.
  • the candidate value of multiple PRACH transmission can be ⁇ 2, 4, 8 ⁇
  • Figure 26 shows RO group mapping based on candidate value of multiple PRACH transmissions. This can provide a coverage enhancement for uplink (UL) transmission.
  • the pattern is determined based on the candidate values of the multiple PRACH transmission level, each one of the candidate multiple PRACH can be occupied the same number of ROs in time/frequency domain, in other words, the candidate ROs group for each candidate value of multiple PRACH transmission level is not the same, as show in figure 27 and figure 28 respectively.
  • Figure 27 shows each candidate value of multiple PRACH occupy same number of Ros.
  • Figure 28 shows each candidate value of multiple PRACH occupy same number of Ros. This can provide a coverage enhancement for uplink (UL) transmission.
  • UL uplink
  • This disclosure propose method (s) to define the mapping rule between multiple PRACH transmissions and SSBs, the SSBs mapping to a ROs group or to a set of ROs groups with different time and/or same/different frequency domain can be considered.
  • the mapping rules is based on preamble-frequency-time order
  • the SSB to RO mapping can be configured as N-to-1
  • the N is pre-configured, however, based on current mechanism, more than one beam will be indicated by a RACH attempt with multiple PRACH transmission, this will be leaded confusion to gNB identification which beam is the best/better beam, to avoid the issue
  • a SSB mapping to a ROs group or a set of ROs groups can be considered, detailed methods are shown in the following. With the coverage enhanced methods for PRACH channel, better coverage can be achieved for uplink channel. This can provide a coverage enhancement for uplink (UL) transmission.
  • UL uplink
  • Method 1 A SSB or more than one SSB can be mapped to a ROs group, the size of RO group is configurable or predefined and it’s associated with the candidate values of multiple PRACH transmissions (e.g. the valid ROs number within a ROs group can be equal to the candidate number of multiple PRACH transmissions. ) , the size between RO groups is the same, the mapping rule can be as following:
  • the set or group of PRACH occasions can be include of more than one RACH occasions.
  • a SSB can be mapped to a ROs group, taking SSB mapping to RO group with size of 4 as an example, as show in figure 29.
  • Figure 29 shows SSB mapping to ROs based on ROs group.
  • the ROs within the RO group with different time entity are different time entity.
  • each candidate value of the multiple PRACH transmission have a corresponding mapping rules between SSB and ROs, gNB and UE based on the number of PRACH transmission or the size of ROs group to determine which mapping rules between SSB and ROs can be used.
  • Method 2 A SSB or more than one SSB can be mapped to a ROs group, the size of RO group is configurable or predefined and/or it’s associated with the candidate values of multiple PRACH transmissions, (e.g. the valid ROs number within a ROs group can be equal to the candidate number of multiple PRACH transmissions. ) , the size between RO groups is the same, the mapping rule can be as following:
  • a SSB can be mapped to a ROs group, taking SSB mapping to RO group with size of 4 as an example, as show in figure 30.
  • Figure 30 shows SSB mapping to ROs based on ROs group
  • each candidate value of the multiple PRACH transmission have a corresponding mapping rules between SSB and ROs, gNB and UE based on the number of PRACH transmission or the size of ROs group to determine which mapping rules between SSB and ROs can be used. This can provide a coverage enhancement for uplink (UL) transmission.
  • UL uplink
  • Method 3 A SSB or more than one SSB can be mapped to a ROs group, the size of RO group is configurable or predefined and/or it’s associated with the candidate values of multiple PRACH transmissions, (e.g. the valid ROs number within a ROs group can be equal to the candidate number of multiple PRACH transmissions. ) , the size between RO groups can be same or different. With the coverage enhanced methods for PRACH channel, better coverage can be achieved for uplink channel. This can provide a coverage enhancement for uplink (UL) transmission.
  • UL uplink
  • mapping rule can be as following:
  • a SSB can be mapped to a ROs group, taking SSB mapping to RO group with size of ⁇ 2, 4, 8 ⁇ as an example, as show in figure 31.
  • Figure 31 shows SSB mapping to ROs based on ROs group. This can provide a coverage enhancement for uplink (UL) transmission.
  • UL uplink
  • each candidate value of multiple PRACH transmission or ROs group should mapping all of the SSBs
  • Method 4 A SSB or more than one SSB can be mapped to a ROs group, the size of RO group is configurable or predefined and/or it’s associated with the candidate values of multiple PRACH transmissions, (e.g. the valid ROs number within a ROs group can be equal to the candidate number of multiple PRACH transmissions. ) , the size between RO groups can be same or different, the mapping rule can be as following:
  • a SSB can be mapped to a ROs group, taking SSB mapping to RO group with size of ⁇ 2, 4, 8 ⁇ as an example, as show in figure 32.
  • Figure 32 shows SSB mapping to ROs based on ROs group
  • each candidate value of multiple PRACH transmission or ROs group should mapping all of the SSBs.
  • Method 5 A SSB or more than one SSB can be mapped to a ROs group, the size of RO group is configurable or predefined and/or it’s associated with the candidate values of multiple PRACH transmissions, (e.g. the valid ROs number within a ROs group can be equal to the candidate number of multiple PRACH transmissions. ) , the size between RO groups can be same or different, all of SSBs mapping to ROs group based on a the first candidate value within the candidate values of ROs group or multiple PRACH transmission configured, then mapping to ROs group based on the second candidate value within the candidate values of ROs group or multiple PRACH transmission configured, then mapping the remaining candidate RO groups value or multiple PRACH transmission value based on the same way, as show in figure 33.
  • Figure 33 shows SSB mapping to ROs based on ROs group. With the coverage enhanced methods for PRACH channel, better coverage can be achieved for uplink channel. This can provide a coverage enhancement for uplink (UL) transmission.
  • UL uplink
  • each candidate value of multiple PRACH transmission or ROs group should mapping all of the SSBs.
  • the number of some RO groups is small than the number of SSBs, then more than one SSB can be mapped to the same ROs group, with this way, RACH preamble groups can be used to indicate the SSB index or SSB information. This can provide a coverage enhancement for uplink (UL) transmission.
  • the RAR window start point can be at the first symbol of the earliest CORESET the UE is configured to receive PDCCH for RACH or the earliest CORESET the UE is configured to receive PDCCH for multiple RACH or the first symbol of the first PDCCH the UE is configured for RACH, that is at least one symbol after the last symbol of the last valid PRACH occasion within a RO group or the last symbol of the last valid PRACH occasion which is detected by gNB or a last symbol of the pre-defined valid PRACH occasion of multiple PRACH transmission or the last symbol of the last valid RACH occasions of the last ROs group within a set of ROs group , where the ROs group or the set of ROs groups are associated with multiple PRACH transmissions.
  • the ROs group (includes at least one of: number of ROs within a ROs groups or a set of ROs group, starting point of ROs group or a set of ROs group, the pattern in time domain and/or in frequency domain of ROs group or a set of ROs group. ) can be indicated by SIB1 or determined based on a pre-defined rules. With the coverage enhanced methods for PRACH channel, better coverage can be achieved for uplink channel. This can provide a coverage enhancement for uplink (UL) transmission.
  • UL uplink
  • the search space for single PRACH transmission UE and the multiple PRACH transmission UE can be configured independent and both of the search spaces for single PRACH transmission UE and multiple PRACH transmission UE can be indicated by systems information, e.g. MIB or SIB1 or others system information. This can provide a coverage enhancement for uplink (UL) transmission.
  • systems information e.g. MIB or SIB1 or others system information.
  • This disclosure proposes some methods to determine the RA-RNTI for multiple PRACH transmission, and the RA-RNTI determination is associated to one or a set of ROs within a ROs group or a set of ROs group, wherein the ROs group or the set of ROs groups are associated with multiple PRACH transmissions.
  • the RA-RNTI for an attempt of multiple PRACH transmission is based on one RO within a ROs group or a set of ROs groups, the one RO can be the first RO or the last RO or any one of RO or a fixed RO within the ROs group, the ROs group or the set of ROs groups which is used for multiple PRACH transmission.
  • ul_carrier_id is the UL carrier used for Random Access Preamble transmission (0 for NUL carrier, and 1 for SUL carrier) .
  • UL uplink
  • the RA-RNTI for an attempt of multiple PRACH transmission is based on a set of ROs within a ROs group or a set of ROs groups, the ROs group or the set of ROs groups which is used for multiple PRACH transmission.
  • the RA-RNTI associated with the PRACH occasion in which the Random Access Preamble is transmitted is computed as:
  • s_id is the sum of the first OFDM symbol of the each ROs within a set of ROs )
  • t_id is the index of the first slot of each ROs within a set of ROs of PRACH occasion within a ROs group or a set of ROs groups in a system frame (0 ⁇ t_id ⁇ M, M is an integer, e.g. 80, t_id is the sum of the first slot of each ROs within a set of ROs.
  • t_id is the index of the 120 kHz slot in a system frame that contains the PRACH occasion (0 ⁇ t_id ⁇ 80)
  • f_id is the index of the PRACH occasion in the frequency domain (0 ⁇ f_id ⁇ N)
  • N is configurable or can be fixed value, e.g. 8
  • ul_carrier_id is the UL carrier used for Random Access Preamble transmission (0 for NUL carrier, and 1 for SUL carrier) . This can provide a coverage enhancement for uplink (UL) transmission.
  • FIG. 34 is a block diagram of an example system 700 for wireless communication according to an embodiment of the present disclosure. Embodiments described herein may be implemented into the system using any suitably configured hardware and/or software.
  • FIG. 34 illustrates the system 700 including a radio frequency (RF) circuitry 710, a baseband circuitry 720, an application circuitry 730, a memory/storage 740, a display 750, a camera 760, a sensor 770, and an input/output (I/O) interface 780, coupled with each other at least as illustrated.
  • the application circuitry 730 may include a circuitry such as, but not limited to, one or more single-core or multi-core processors.
  • the processors may include any combination of general-purpose processors and dedicated processors, such as graphics processors, application processors.
  • the processors may be coupled with the memory/storage and configured to execute instructions stored in the memory/storage to enable various applications and/or operating systems running on the system.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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Abstract

Un procédé de commande de puissance d'une procédure d'accès au réseau radio consiste à transmettre, par un dispositif de communication sans fil, des informations de canal physique associées à une montée en puissance/augmentation de puissance lorsque le dispositif de communication sans fil détermine un accès au réseau radio, les informations de canal physique comprenant un groupe de canaux d'accès aléatoire physique (PRACH), un canal partagé de liaison montante physique de message (PUSCH), un groupe PUSCH de message et/ou une pluralité de groupes de messages.
PCT/CN2023/094282 2023-05-15 2023-05-15 Procédés de commande de puissance, procédés de communication sans fil d'amélioration de couverture et dispositifs de communication sans fil Pending WO2024234247A1 (fr)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110326337A (zh) * 2017-02-20 2019-10-11 夏普株式会社 终端装置、基站装置、通信方法以及集成电路
CN113785624A (zh) * 2019-05-02 2021-12-10 苹果公司 用于两步随机接入过程的功率控制的方法和ue
US20220217789A1 (en) * 2019-09-25 2022-07-07 Lg Electronics Inc. Method for transmitting and receiving signals for performing random access process in unlicensed band, and apparatus therefor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110326337A (zh) * 2017-02-20 2019-10-11 夏普株式会社 终端装置、基站装置、通信方法以及集成电路
CN113785624A (zh) * 2019-05-02 2021-12-10 苹果公司 用于两步随机接入过程的功率控制的方法和ue
US20220217789A1 (en) * 2019-09-25 2022-07-07 Lg Electronics Inc. Method for transmitting and receiving signals for performing random access process in unlicensed band, and apparatus therefor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
QUALCOMM EUROPE: "PRACH and Message3 power control", 3GPP DRAFT; R1-082551, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Warsaw, Poland; 20080625, 25 June 2008 (2008-06-25), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP050110813 *

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