[go: up one dir, main page]

WO2021155591A1 - Procédé d'accès aléatoire, appareil, terminal, dispositif de réseau et support de stockage - Google Patents

Procédé d'accès aléatoire, appareil, terminal, dispositif de réseau et support de stockage Download PDF

Info

Publication number
WO2021155591A1
WO2021155591A1 PCT/CN2020/074533 CN2020074533W WO2021155591A1 WO 2021155591 A1 WO2021155591 A1 WO 2021155591A1 CN 2020074533 W CN2020074533 W CN 2020074533W WO 2021155591 A1 WO2021155591 A1 WO 2021155591A1
Authority
WO
WIPO (PCT)
Prior art keywords
configuration information
random access
resource
terminal
pusch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2020/074533
Other languages
English (en)
Chinese (zh)
Inventor
林雪
石聪
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.)
Guangdong Oppo Mobile Telecommunications Corp Ltd
Original Assignee
Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to PCT/CN2020/074533 priority Critical patent/WO2021155591A1/fr
Priority to CN202080077065.XA priority patent/CN115245035B/zh
Publication of WO2021155591A1 publication Critical patent/WO2021155591A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA

Definitions

  • This application relates to the field of communication technology, and in particular to a random access method, device, terminal, network device, and storage medium.
  • NR New Radio
  • Two-step random access is divided into two-step random access based on contention and two-step random access based on non-competition. Among them, two-step random access based on non-competition can be used for handover scenarios. Regarding the two-step non-competitive random access method, there is no solution for the random access resource allocation method.
  • the embodiments of the present application provide a random access method, device, terminal, network equipment, and storage medium, which can be used to indicate physical uplink shared control channel PUSCH resources in non-competitive random access.
  • a random access method includes:
  • the above-mentioned resource configuration information is also used to indicate contention for random access to PUSCH resources corresponding to CBRA.
  • the above-mentioned resource configuration information includes first configuration information and second configuration information; the first configuration information is used to indicate the PUSCH resource corresponding to CFRA; the second configuration information is used to indicate the PUSCH resource corresponding to CBRA.
  • the above-mentioned first configuration information is also used to indicate the PUSCH resource corresponding to CBRA.
  • the above-mentioned resource configuration information further includes third configuration information; the third configuration information is used to indicate the PUSCH resource corresponding to CBRA.
  • the foregoing first configuration information and second configuration information include one or more configuration parameters; the first configuration information and the second configuration information include the same type of configuration parameters.
  • the types of the above-mentioned configuration parameters include: at least one of modulation mode, starting position of time-frequency resources, number of occupied resource blocks RB, number of persistent symbols, and demodulation reference signal DMRS information.
  • At least one type of configuration parameter has a different value.
  • the transmittable data size TB size corresponding to the first configuration information is the same as the TB size corresponding to the second configuration information.
  • the aforementioned TB size is determined by one or more types of configuration parameters in the configuration information.
  • the foregoing receiving resource configuration information indicated by the network device includes:
  • Radio resource control RRC message transparently transmitted by the target network device through the original network device; the RRC message includes part of the bandwidth BWP and resource configuration information.
  • the above RRC message further includes indication parameters for indicating the physical random access channel PRACH resources and the preamble sequence, and the offset between the PRACH resource access timing RO and the PUSCH resource timing PO.
  • the above-mentioned indication parameters include: one or more reference signals corresponding to CFRA, and a mapping relationship between one or more reference signals and one or more preambles.
  • the above-mentioned one or more reference signals include one or more synchronization signal blocks SSB and/or one or more channel state information reference signals CSI-RS.
  • the method before performing random access on the PUSCH resource indicated by the resource configuration information, the method further includes:
  • performing random access on the PUSCH resource indicated by the resource configuration information includes:
  • the measurement results corresponding to the one or more reference signals select a target reference signal from the one or more reference signals, and determine the Preamble corresponding to the target reference signal as the target Preamble;
  • the first message of random access is sent through the target PRU.
  • a random access method includes:
  • the resource configuration information is used to indicate the physical uplink shared control channel PUSCH resource information corresponding to the non-competitive random access CFRA;
  • the receiving terminal initiates random access on the PUSCH resource indicated by the resource configuration information.
  • the above-mentioned resource configuration information is also used to indicate contention for random access to PUSCH resources corresponding to CBRA.
  • the above-mentioned resource configuration information includes first configuration information and second configuration information; the first configuration information is used to indicate the PUSCH resource corresponding to CFRA; the second configuration information is used to indicate the PUSCH resource corresponding to CBRA.
  • the above-mentioned first configuration information is also used to indicate the PUSCH resource corresponding to CBRA.
  • the above-mentioned resource configuration information further includes third configuration information; the third configuration information is used to indicate the PUSCH resource corresponding to CBRA.
  • the foregoing first configuration information and second configuration information include one or more configuration parameters; the first configuration information and the second configuration information include the same type of configuration parameters.
  • the types of the above-mentioned configuration parameters include: at least one of modulation mode, starting position of time-frequency resources, number of occupied resource blocks RB, number of persistent symbols, and demodulation reference signal DMRS information.
  • At least one type of configuration parameter has a different value.
  • the transmittable data size TB size corresponding to the first configuration information is the same as the TB size corresponding to the second configuration information.
  • the aforementioned TB size is determined by one or more types of configuration parameters in the configuration information.
  • the foregoing indication of resource configuration information to the terminal includes:
  • the radio resource control RRC message is transparently transmitted to the terminal through the original network device; the RRC message includes part of the bandwidth BWP and resource configuration information.
  • the above RRC message further includes indication parameters for indicating the physical random access channel PRACH resources and the preamble sequence, and the offset between the PRACH resource access timing RO and the PUSCH resource timing PO.
  • the above-mentioned indication parameters include: one or more reference signals corresponding to CFRA, and a mapping relationship between one or more reference signals and one or more preambles.
  • the above-mentioned one or more reference signals include one or more synchronization signal blocks SSB and/or one or more channel state information reference signals CSI-RS.
  • a random access device includes a receiving module and an access module:
  • the receiving module is configured to receive resource configuration information indicated by the network device, and the resource configuration information is used to indicate the physical uplink shared control channel PUSCH resource corresponding to the non-competitive random access CFRA;
  • the access module is used to perform random access on the PUSCH resource indicated by the resource configuration information.
  • a random access device includes a sending module and a receiving module:
  • the sending module is used to indicate resource configuration information to the terminal, and the resource configuration information is used to indicate the physical uplink shared control channel PUSCH resource information corresponding to the non-competitive random access CFRA;
  • the receiving module is used to receive random access initiated on the PUSCH resource indicated by the terminal through the resource configuration information.
  • a terminal includes a receiver and a transmitter:
  • a receiver configured to receive resource configuration information indicated by a network device, where the resource configuration information is used to indicate the physical uplink shared control channel PUSCH resource corresponding to the non-competitive random access CFRA;
  • the transmitter is used to cooperate with the receiver to perform random access on the PUSCH resource indicated by the resource configuration information.
  • a network device includes a transmitter and a receiver:
  • the transmitter is used to indicate resource configuration information to the terminal, and the resource configuration information is used to indicate non-competitive random access physical uplink shared control channel PUSCH resource information corresponding to CFRA;
  • the receiver is used to receive random access initiated on the PUSCH resource indicated by the terminal through the resource configuration information.
  • a computer-readable storage medium has a computer program stored thereon, and when the computer program is executed by a processor, the following steps are implemented:
  • a computer-readable storage medium has a computer program stored thereon, and when the computer program is executed by a processor, the following steps are implemented:
  • the resource configuration information is used to indicate the physical uplink shared control channel PUSCH resource information corresponding to the non-competitive random access CFRA;
  • the receiving terminal initiates random access on the PUSCH resource indicated by the resource configuration information.
  • the terminal receives resource configuration information indicated by the network equipment. Since the resource configuration information can indicate the PUSCH resource corresponding to CFRA, the terminal can, after obtaining the resource configuration information, It is possible to clearly determine which PUSCH resources are the PUSCH resources corresponding to the initiating CFRA according to the above resource configuration information, so that the terminal can send the information that needs to be transmitted to the network device during random access through the PUSCH resource, which improves the adaptability of the random access of the terminal.
  • FIG. 1 is an application environment diagram of a random access method provided by an embodiment
  • Fig. 2 is a flowchart of a random access method provided by an embodiment
  • FIG. 3 is a schematic diagram of the association relationship between PO and RO in an embodiment
  • Figure 4 is a schematic diagram of the correspondence between Preamble and available PRU in an embodiment
  • FIG. 5 is a flowchart of a random access method provided by another embodiment
  • Fig. 6 is a schematic diagram of a mapping relationship between a reference signal and a preamble in an embodiment
  • FIG. 7 is a schematic diagram of a mapping relationship between a reference signal and a preamble in another embodiment
  • FIG. 8 is a flowchart of a random access method provided by another embodiment
  • Figure 9 is a signaling interaction diagram of a random access method provided by an embodiment
  • FIG. 10 is a block diagram of a random access device provided by an embodiment
  • FIG. 11 is a block diagram of a random access device provided by another embodiment.
  • FIG. 12 is a block diagram of a random access device provided by another embodiment
  • FIG. 13 is a block diagram of a random access device provided by another embodiment
  • FIG. 14 is a schematic diagram of the internal structure of a network device provided by an embodiment.
  • FIG. 15 is a schematic diagram of the internal structure of a terminal provided by an embodiment.
  • the terminal can trigger random access in a variety of scenarios.
  • the random access process may include Contention Based Random Access (CBRA) and Contention Free Random Access (CFRA).
  • CBRA Contention Based Random Access
  • CFRA Contention Free Random Access
  • the CBRA process can include the following 4 steps (referred to as 4-step CBRA):
  • Step 1 The terminal sends a message 1 (message 1, MSG1 for short) to the network device.
  • the terminal sends a random access preamble sequence (Preamble) to the network device through a physical random access channel (Physical Random Access Channel, PRACH) resource.
  • Preamble Physical Random Access Channel
  • Step 2 After receiving MSG1, the network device sends a random access response (Random Access Response, RAR) message to the terminal, where RAR includes the uplink resource information used by the terminal when sending MSG3, and the network device allocates temporary wireless network temporary for the terminal. Identification (Radio Network Tempory Identity, RNTI) and uplink timing information of the terminal, etc.
  • RAR Random Access Response
  • Step 3 The terminal sends MSG3 to the network. After successfully receiving the RAR, the terminal sends MSG3 in the uplink resource specified by the RAR message, which is mainly used to notify the network of what event triggered the random access process.
  • Step 4 The network device sends MSG4 to the terminal, which is used to resolve resource contention conflicts and transmit a radio resource control (Radio Resource Control, RRC) configuration message to the terminal.
  • RRC Radio Resource Control
  • the random access procedure for CFRA includes steps one and two above.
  • the difference between CBRA and CFRA is that CBRA requires the terminal to select the Preamble and send the Physical Random Access Channel (PRACH) resources corresponding to the Preamble, while the PRACH and Preamble are determined according to the instructions of the network device during the CFRA process. of.
  • PRACH Physical Random Access Channel
  • the NR system will introduce a two-step random access process, that is, at least two signaling interactions between the terminal and the network equipment, including:
  • Step 1 The terminal sends the Preamble to the network device through the PRACH resource, and sends load information to the network device through the Physical Uplink Shared Channel (PUSCH) resource.
  • the above-mentioned load information can be the above-mentioned MSG3 information or the waiting information. User data transmitted, etc.
  • Step 2 The network device sends a random access response to the terminal.
  • the two-step random access process involves sending the Preamble to the network device through the PRACH resource, and also involves sending the load information to the network device through the PUSCH resource. Therefore, before the terminal sends the Preamble and load information to the network device, it needs to determine the PRACH resource and the PUSCH resource corresponding to the above-mentioned information.
  • the foregoing two-step random access process can be a two-step CBRA or a two-step CFRA, where CFRA can be applied to handover scenarios.
  • CFRA can be applied to handover scenarios.
  • For two-step CFRA how to obtain the PUSCH resource indicated by the network device is a problem to be solved urgently.
  • FIG. 1 is a schematic diagram of an application scenario of the random access method provided by an embodiment of the application. As shown in FIG. 1, this scenario includes a network device 100 and a terminal 200, and the network device 100 and the terminal 200 communicate through a network.
  • the network equipment 100 may be a base station (Base Transceiver Station, referred to as BTS) in Global System of Mobile Communications (GSM) or Code Division Multiple Access (Code Division Multiple Access, referred to as CDMA), or broadband
  • BTS Base Transceiver Station
  • GSM Global System of Mobile Communications
  • CDMA Code Division Multiple Access
  • the base station (NodeB, NB) in Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA for short) can also be the Evolutional Node B (eNB or eNodeB for short) in LTE, or a relay station or an access point , Or the base station in the 5G network, etc., are not limited here.
  • the terminal 200 may be a wireless terminal.
  • the wireless terminal may be a device that provides voice and/or other service data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem.
  • a wireless terminal can communicate with one or more core networks via a radio access network (Radio Access Network, referred to as RAN).
  • the wireless terminal can be a mobile terminal, such as a mobile phone (or called a "cellular" phone) and a mobile phone with a mobile terminal.
  • Computers for example, may be portable, pocket-sized, handheld, computer-built or vehicle-mounted mobile devices, which exchange language and/or data with the wireless access network.
  • PCS Personal Communication Service
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistants
  • random access method of this application is not limited to solving the above technical problems, but can also be used to solve other technical problems, which is not limited in this application.
  • Fig. 2 is a flowchart of a random access method in an embodiment.
  • the random access method in this embodiment is described by taking the terminal operating in FIG. 1 as an example. As shown in Figure 2, the above random access method includes the following steps:
  • the random access method in this application can be applied to two-step CFRA, and the terminal can determine the PUSCH resource corresponding to initiating two-step CFRA according to the resource configuration information by receiving the resource configuration information indicated by the network device.
  • the network device can indicate the resource configuration information to the terminal in the connected state through dedicated signaling.
  • the dedicated signaling may be a physical downlink control channel (Physical Downlink Control Channel, PDCCH for short) order or an RRC message, which is not limited here.
  • the network device when the network device indicates the resource configuration information, it can directly indicate the value of each parameter contained in the resource configuration information through a dedicated instruction, or it can indicate the resource configuration information index value through a dedicated instruction, so that the terminal can directly indicate the value of the resource configuration information after receiving the index value.
  • the resource configuration information list stored locally the resource configuration information corresponding to the index value is queried; the above-mentioned indication method is not limited here.
  • the resource configuration information may include various parameters, such as indicating the number of resources corresponding to the PUSCH resource and the resource location, which are not limited here.
  • the foregoing resource configuration information may also include other indication information corresponding to random access.
  • the terminal After obtaining the resource configuration information, the terminal can determine the PUSCH resource corresponding to the random access according to the resource configuration information and initiate random access.
  • the terminal When the terminal initiates random access, it can send load information through PUSCH resources.
  • the foregoing load information may be used to inform the network of what scenario triggers the random access, the reason for triggering the random access, terminal identification information, etc.; it may also include user data.
  • the terminal when the terminal switches from the original network device to the target network device, it can initiate random access to the target network device, and send untransmitted user data to the target network device through load information.
  • the terminal When initiating random access, the terminal sends a random access request MSGA to the network device.
  • the aforementioned MSGA includes load information and Preamble.
  • the terminal can send load information through PUSCH resources and can send Preamble through PRACH resources.
  • the network device After receiving the random access request MSGA sent by the terminal, the network device can demodulate the preamble and load information in the MSGA. If both the preamble and load information are demodulated successfully, the physical downlink control channel (Physical Downlink Control Channel, PDCCH for short) scrambled by the C-RNTI is used to indicate to the terminal the location of the downlink allocated resources; if the preamble demodulation is successful, but the load information is resolved If the tuning is unsuccessful, the PDCCH scrambled by MSGB-RNTI can be used to indicate the RAR resource location to the terminal.
  • the MSGB-RNTI is calculated according to the RO time-frequency position of the target Preamble sent by the terminal, and the C-RNTI is included in the load information sent by the UE according to the calculation.
  • the terminal After sending the MSGA, the terminal opens the random access response monitoring window, and simultaneously monitors the PDCCH scrambled by the C-RNTI and the PDCCH scrambled by the MSGB-RNTI.
  • the terminal monitors the PDCCH scrambled by the C-RNTI, if the downlink allocation includes at least uplink timing information, then the random access is considered to be successful.
  • the terminal monitors the MSGB-RNTI scrambled PDCCH and successfully decodes the RAR, and the RAPID carried in a subheader in the RAR is the same as the PREAMBLE_INDEX sent by the terminal to the network device, it will resend the load information to the network device according to the uplink resource indicated in the RAR .
  • the terminal receives the resource configuration information indicated by the network device. Since the resource configuration information can indicate the PUSCH resource corresponding to CFRA, the terminal can clearly determine which resource configuration information after obtaining the resource configuration information.
  • the PUSCH resource is the PUSCH resource corresponding to the initiating CFRA, so that the terminal can use the PUSCH resource to send information that needs to be transferred to the network device during random access, which improves the adaptability of the terminal for random access.
  • the network device in order to ensure the smooth access of random access, when the network device indicates the random access resource of CFRA for the terminal, it can also indicate the random access resource of CBRA at the same time.
  • the terminal cannot determine that the threshold is satisfied among the CFRA candidate resources When the resources are available, you can fall back to CBRA to continue access. That is to say, the above resource configuration information may also be used to indicate contention for random access to the PUSCH resource corresponding to CBRA.
  • the resource configuration information indicated by the network device may include first configuration information and second configuration information.
  • the first configuration information is used to indicate the PUSCH resource corresponding to CBRA
  • the second configuration information is used to indicate the PUSCH resource corresponding to CFRA.
  • Both the first configuration information and the second configuration information can include one or more configuration parameters.
  • the type of the configuration parameter contained in the first configuration information can be the same as the type of the configuration parameter contained in the second configuration information. It can be different.
  • the types of configuration parameters included in the first configuration information and the second configuration information are the same.
  • the types of the above-mentioned configuration parameters may include: modulation method, starting position of time-frequency resources, number of occupied resource blocks (Resource Block, RB for short), number of sustained symbols, and demodulation reference signal (Demodulation Reference Signal, (Abbreviated as DMRS) at least one of the information.
  • DMRS Demodulation Reference Signal
  • the above-mentioned time-frequency resource starting position is used to determine the starting position of PUSCH resources
  • the above-mentioned number of RBs can be used to determine the range of frequency domain resources required to initiate random access
  • the above-mentioned number of persistent symbols can be used to determine the starting position of random access.
  • the above DMRS information is used to indicate the demodulation information of the load information
  • the above modulation method is used to indicate the modulation method of the data transferred in the PUSCH resource.
  • the value of each configuration parameter may be the same or different.
  • the values of the configuration parameters in the first configuration information and the second configuration information are the same, the above-mentioned first configuration information and the second configuration information indicate the same PUSCH resource.
  • at least one type of configuration parameter has a different value, that is, the above-mentioned first configuration information and the second configuration information indicate different PUSCH resources.
  • the network device separately indicates the PUSCH resource for CBRA and the random access resource for CFRA through the resource configuration information.
  • the terminal cannot determine the resource that meets the threshold among the CFRA candidate resources, it can be based on the CBRA
  • the resources continue to initiate random access, which improves the reliability of random access.
  • the above-mentioned first configuration information is also used to indicate the PUSCH resource corresponding to CBRA. That is to say, CBRA and CFRA can share PUSCH resources.
  • the configuration information used to indicate the PUSCH resource of CBRA includes first configuration information and second configuration information. When the terminal initiates CBRA based on the resource configuration information, it can select the first configuration information or The second configuration information determines the corresponding PUSCH resource.
  • the aforementioned resource configuration information may include PUSCH Configuration #1 and PUSCH Configuration #2, where PUSCH Configuration #1 is used to indicate the PUSCH resource of CFRA, and PUSCH Configuration #1 and PUSCH Configuration #2 are used to indicate the PUSCH resource of CBRA.
  • the network device can configure the first configuration information and the second configuration information for the terminal, and at the same time, the network device can instruct the terminal that the first configuration information can also be used to indicate the PUSCH resource corresponding to CBRA.
  • the network device indicates the foregoing first configuration information and second configuration information, it may be indicated by the index value of the PUSCH Configuration, or may indicate the value of each parameter in the PUSCH Configuration, which is not limited here.
  • the network device indicates to the terminal that the first configuration information can also be used to indicate the PUSCH resource corresponding to CBRA, it can be indicated by the index value of the first configuration information, or can be indicated by the position of the first configuration information indication field, which is not limited here. .
  • the network equipment indicates to the terminal with less message content, which can save signaling overhead; further, the network equipment indicates to the terminal multiple sets of sub-configuration information, so that the terminal determines the PUSCH resource corresponding to CBRA, Appropriate sub-configuration information can be selected according to the amount of data to be transmitted, which can improve resource utilization and avoid waste of PUSCH resources.
  • the first configuration information can indicate both the PUSCH resource corresponding to CBRA and the PUSCH resource corresponding to CFRA, when the terminal rolls back from CFRA to CBRA to continue access, the first configuration information can more easily satisfy the rollback. condition.
  • another way of indicating resource configuration information is involved.
  • the network device may configure the third configuration information for the terminal.
  • the above resource configuration information also includes third configuration information; where the third configuration information is used to indicate the PUSCH resource corresponding to CBRA.
  • the network device independently configures the PUSCH resources corresponding to CFRA for the terminal, and CFRA and CBRA do not share PUSCH resources.
  • the resource configuration information configured by the network device for the terminal may include: PUSCH Configuration#1, PUSCH Configuration#2, and PUSCH Configuration#3, respectively indicating different PUSCH resources, where PUSCH Configuration#1 is used to indicate the PUSCH resource corresponding to CFRA , PUSCH Configuration#2 and PUSCH Configuration#3 are used to indicate the PUSCH resource corresponding to CBRA.
  • the network device when the network device indicates the foregoing third configuration information to the terminal, it may be indicated by the index value of the PUSCH Configuration, or may indicate the value of each parameter in the PUSCH Configuration, which is not limited here.
  • the transmittable data size TB size corresponding to the first configuration information is the same as the TB size corresponding to the second configuration information.
  • the aforementioned TB size may be determined by one or more types of configuration parameters in the configuration information, for example, it may be determined by configuration parameters such as the number of RBs and the modulation mode. That is to say, when the terminal initiates CFRA, it can calculate a TB size based on one or more types of configuration parameters in the first configuration information; when the terminal initiates CBRA, it can also calculate a TB size based on some parameters in the second configuration information. size. Only when the sizes of the two TBs are the same, the rollback from CFRA to CBRA can be realized.
  • the TB size corresponding to the foregoing third configuration parameter information may be the same as or different from the TB size corresponding to the first configuration information.
  • the network device independently configures PUSCH resources for CFRA, so that the terminal can clearly obtain the PUSCH resource corresponding to CFRA according to the resource configuration information, thereby ensuring that the terminal can smoothly initiate a random access request to the network device.
  • two-step CFRA can be applied to handover scenarios.
  • the terminal can receive a radio resource control RRC message transparently transmitted by the target network device through the original network device; the RRC message includes at least a bandwidth part (Bandwidth Part, BWP for short) and the above resource configuration information.
  • the foregoing RRC message may be an RRC reconfiguration message.
  • the two-step CFRA can reduce the time delay in the network handover.
  • a network device indicates PRACH resources to a terminal through resource configuration information.
  • the foregoing RRC message may also include indication parameters for indicating PRACH resources and preamble sequence Preamble, and an offset between PRACH resource access timing (RAOccasion, RO for short) and PUSCH resource timing (PUSCH Occasion, PO for short).
  • RRCccasion PRACH resource access timing
  • PUSCH Occasion PRACH resource timing
  • the above-mentioned indication parameter may be indicated to the terminal through the RACH-ConfigDedicated IE in the RRC reconfiguration message.
  • the terminal can determine the PRACH resource corresponding to initiating random access through the above information, and determine the PO according to the offset between the RO and the PO, and further obtain the PUSCH resource.
  • the foregoing indication parameter may include: one or more reference signals corresponding to CFRA, and a mapping relationship between one or more reference signals and one or more preambles.
  • one reference signal may correspond to one preamble, and the preambles corresponding to different reference signals may be the same or different.
  • the aforementioned one or more reference signals include one or more synchronization signal blocks SSB and/or one or more channel state information reference signals CSI-RS.
  • the network device may indicate multiple available reference signals to the terminal, and the above-mentioned reference signals may be indicated by the SSB index index and/or the CSI-RS index.
  • the resource configuration information can also be used to indicate PRACH resources, so that the terminal can obtain PRACH resources and PUSCH resources corresponding to random access at the same time after receiving an RRC message once, thereby saving signaling overhead.
  • a network device determines PUSCH resources according to resource configuration information. Specifically, after the terminal obtains the foregoing resource configuration information, it can establish a correspondence between an available Preamble and an available PUSCH resource unit (PUSCH Resource Unit, PRU for short). Then, the terminal can determine the PUSCH resource corresponding to CFRA based on the corresponding relationship.
  • PUSCH Resource Unit PRU for short
  • the terminal may determine the available PRACH resources for CFRA according to one or more reference signals used for CFRA; then according to the available PRACH resources, the above offset and resource configuration information, determine the available PUSCH resource unit PRU; and finally according to One or more reference signals determine the available Preamble for CFRA; and establish the correspondence between the available Preamble and the available PRU according to the mapping ratio between the number of available Preambles and the number of available PRUs.
  • the network device indicates multiple SSB indexes for CFRA to the terminal; each SSB index corresponds to multiple ROs, or may correspond to one RO, and the terminal can determine the available PRACH resources according to the multiple ROs. Further, the terminal may determine the position of the PO associated with the RO according to the offset between the RO and the PO, as shown in FIG. 3. After determining multiple POs, the terminal also determines multiple starting positions of the available PUSCH resources, and then further determines the available PRUs in the available PUSCH resources according to the configuration parameters in the resource configuration information.
  • the terminal can determine the starting position of the PRU according to the starting position of the time-frequency resource in the resource configuration information, determine the number of PRUs according to the number of occupied resource blocks RB, and determine the time domain range corresponding to the PRU according to the number of persistent symbols, etc., to obtain the terminal corresponding Available PRU.
  • the terminal can also determine all available Preambles for CFRA supported under the current configuration according to the reference signal.
  • the terminal may divide the number of available Preambles by the number of available PRUs to obtain the mapping ratio between the available Preambles and the available PRUs.
  • the above mapping ratio can be used to determine how many preambles each PRU corresponds to. For example, when the above mapping ratio is 2, in the correspondence between available Preambles and available PRUs established by the terminal, two Preambles can correspond to one PRU, as shown in Figure 4.
  • the terminal after the terminal obtains the resource configuration information, by establishing the corresponding relationship between the available Preamble and the available PRU, the terminal can obtain the corresponding PRU according to the corresponding relationship after determining the target Preamble, so as to realize the reasonable planning of PUSCH resources , To avoid waste of resources.
  • FIG. 5 is a schematic flow chart of a random access method in an embodiment. This embodiment relates to a way for a terminal to perform random access on the PUSCH resource corresponding to the resource configuration information. Based on the above embodiment, as shown in Figure 5, the above S102 includes:
  • S201 According to the measurement results corresponding to the one or more reference signals, select a target reference signal from the one or more reference signals, and determine the preamble corresponding to the target reference signal as the target preamble.
  • the terminal can further determine a target Preamble and determine the PRU corresponding to the Preamble. Specifically, the terminal can test each reference signal indicated by the network device, obtain the reference signal received power (Reference Signal Received Power, RSRP) corresponding to each parameter signal, and select the one greater than the RSPR threshold according to the RSPR threshold indicated by the network device Target SSB index or target CSI-RS index.
  • RSRP Reference Signal Received Power
  • S202 Determine a target PRU corresponding to the target Preamble based on the corresponding relationship.
  • the terminal After determining the target SSB index, the terminal can determine the Preamble corresponding to the target SSB index as the target Preamble according to the mapping relationship between the candidate reference signal and the preamble indicated by the network device. Further, the terminal can determine the RO corresponding to the target SSB index and the target PRACH resource corresponding to the RO.
  • S203 Send the first message of random access through the target PRU.
  • the terminal may send the first random access message MSGA through the target PRU and the target PRACH resource.
  • the above MSGA includes the target Preamble and load information.
  • the terminal can send the load information through the target PRU and send the target Preamble through the target PRACH.
  • the terminal selects a target reference signal from one or more reference signals according to the measurement result corresponding to the candidate reference signal, if none of the candidate reference signals indicated by the network device meets the condition greater than the RSPR threshold, the terminal A two-step CBRA can be initiated, by monitoring the available SSBs of the network equipment to determine which locations of PRACH resources to initiate random access.
  • the network device may also indicate to the terminal the second mapping relationship between the reference signal and the preamble when CBRA is initiated. In the foregoing second mapping relationship, one reference signal can be mapped to multiple preambles.
  • the terminal After the terminal determines the SSB through monitoring, it further selects one of the preambles from the multiple preambles corresponding to the SSB according to the second mapping relationship and sends it to the network device.
  • the corresponding Preamble in the CFRA mapping relationship is different from the corresponding Preamble in the second mapping relationship of CBRA.
  • one SSB can correspond to a total of 64 Preambles, where Preamble#1-Preamble-31 can be used for CBRA, and Preamble#32-Preamble#63 can be used for CFRA, etc.
  • mapping relationship between SSB and Preamble stored in the network device may also include multiple preambles corresponding to 4-step CBRA.
  • the mapping relationship stored in the above-mentioned network device can have two forms:
  • the preambles mapped by the 4-step CBRA and the 2-step CBRA are different.
  • the mapping relationship stored in the network device also includes multiple preambles when the SSB is used for 4-step CBRA, multiple preambles when the SSB is used for 2-step CBRA, and multiple preambles when the SSB is used for CFRA, as shown in FIG. 6.
  • the preambles mapped by the 4-step CBRA and the 2-step CBRA can be the same or different.
  • Two mapping relationships can be stored in the network equipment at the same time, one of which is the mapping relationship under 4-step random access, including multiple preambles when the SSB is used for 4-step CBRA and multiple preambles when the SSB is used for CFRA;
  • the second type is the mapping relationship under 2-step random access, including multiple preambles when the SSB is used for 2-step CBRA and multiple preambles when the SSB is used for CFRA, as shown in FIG. 7.
  • the terminal selects a target reference signal from one or more reference signals according to the measurement results corresponding to one or more reference signals, so that the target reference signal selected by the terminal can meet the requirements of random access. Improve the reliability of random access initiated by the terminal.
  • Fig. 8 is a flowchart of a random access method in an embodiment.
  • the random access method in this embodiment is described by taking the network device running in FIG. 1 as an example. As shown in Figure 8, the foregoing random access method includes the following steps:
  • S302 Receive random access initiated by the terminal on the PUSCH resource indicated by the resource configuration information.
  • the resource configuration information is also used to indicate contention for random access to PUSCH resources corresponding to CBRA.
  • the resource configuration information includes first configuration information and second configuration information; the first configuration information is used to indicate the PUSCH resource corresponding to CFRA; the second configuration information is used to indicate the PUSCH resource corresponding to CBRA.
  • the first configuration information is also used to indicate the PUSCH resource corresponding to CBRA.
  • the resource configuration information further includes third configuration information; the third configuration information is used to indicate the PUSCH resource corresponding to CBRA.
  • the first configuration information and the second configuration information include one or more configuration parameters; the first configuration information and the second configuration information include the same type of configuration parameters.
  • the types of configuration parameters include: at least one of modulation mode, start position of time-frequency resources, number of occupied resource blocks RB, number of persistent symbols, and demodulation reference signal DMRS information.
  • At least one type of configuration parameter has a different value.
  • the transmittable data size TB size corresponding to the first configuration information is the same as the TB size corresponding to the second configuration information.
  • the TB size is determined by one or more types of configuration parameters in the configuration information.
  • indicating the resource configuration information to the terminal includes: transparently transmitting a radio resource control RRC message to the terminal through the original network device; the RRC message includes a partial bandwidth BWP and resource configuration information.
  • the RRC message further includes indication parameters for indicating the physical random access channel PRACH resources and the preamble sequence, and the offset between the PRACH resource access timing RO and the PUSCH resource timing PO.
  • the indication parameter includes: one or more reference signals corresponding to CFRA, and a mapping relationship between one or more reference signals and one or more preambles.
  • the one or more reference signals include one or more synchronization signal blocks SSB and/or one or more channel state information reference signals CSI-RS.
  • the interaction process between the terminal and the network device is as follows:
  • the network device indicates resource configuration information to the terminal.
  • S402 The terminal receives resource configuration information indicated by the network device.
  • S403 The terminal performs random access on the PUSCH resource indicated by the resource configuration information.
  • the network device receives the random access initiated on the PUSCH resource indicated by the terminal through the resource configuration information.
  • steps in the flowcharts of FIGS. 2-9 are displayed in sequence as indicated by the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless specifically stated in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least part of the steps in Figures 2-9 may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. These sub-steps or stages The execution order of is not necessarily performed sequentially, but may be performed alternately or alternately with at least a part of other steps or sub-steps or stages of other steps.
  • a random access device is provided. As shown in FIG. 10, the above random access device includes a receiving module 110 and an access module 120:
  • the receiving module 110 is configured to receive resource configuration information indicated by the network device, and the resource configuration information is used to indicate the physical uplink shared control channel PUSCH resource corresponding to the non-competitive random access CFRA;
  • the access module 120 is configured to perform random access on the PUSCH resource indicated by the resource configuration information.
  • the resource configuration information is also used to indicate contention for random access to PUSCH resources corresponding to CBRA.
  • the resource configuration information includes first configuration information and second configuration information; the first configuration information is used to indicate the PUSCH resource corresponding to CFRA; the second configuration information is used to indicate the corresponding CBRA PUSCH resources.
  • the first configuration information is further used to indicate the PUSCH resource corresponding to CBRA.
  • the resource configuration information further includes third configuration information; the third configuration information is used to indicate the PUSCH resource corresponding to CBRA.
  • the first configuration information and the second configuration information include one or more configuration parameters; the first configuration information and the second configuration information include the same type of configuration parameters.
  • the types of configuration parameters include: modulation mode, starting position of time-frequency resources, number of occupied resource blocks RB, number of persistent symbols, and at least one of the demodulation reference signal DMRS information A sort of.
  • At least one type of configuration parameter has a different value.
  • the transmittable data size TB size corresponding to the first configuration information is the same as the TB size corresponding to the second configuration information.
  • the TB size is determined by one or more types of configuration parameters in the configuration information.
  • the foregoing receiving module 110 is specifically configured to: receive a radio resource control RRC message transparently transmitted by the target network device through the original network device; the RRC message includes part of the bandwidth BWP and resource configuration information.
  • the RRC message further includes indication parameters for indicating the physical random access channel PRACH resource and the preamble sequence, and the relationship between the PRACH resource access occasion RO and the PUSCH resource occasion PO The offset.
  • the indication parameter includes: one or more reference signals corresponding to CFRA, and a mapping relationship between one or more reference signals and one or more preambles.
  • the one or more reference signals include one or more synchronization signal blocks SSB and/or one or more channel state information reference signals CSI-RS.
  • the foregoing apparatus further includes an establishment module 130, configured to: determine the available PRACH resource according to one or more reference signals; and according to the available PRACH resource, offset Determine the available PUSCH resource unit PRU; determine the available preamble for CFRA according to one or more reference signals; establish the available preamble and the available preamble according to the mapping ratio between the number of available preambles and the number of available PRUs Correspondence between available PRUs.
  • an establishment module 130 configured to: determine the available PRACH resource according to one or more reference signals; and according to the available PRACH resource, offset Determine the available PUSCH resource unit PRU; determine the available preamble for CFRA according to one or more reference signals; establish the available preamble and the available preamble according to the mapping ratio between the number of available preambles and the number of available PRUs Correspondence between available PRUs.
  • the foregoing access module 120 includes:
  • the selection unit 121 is configured to select a target reference signal from the one or more reference signals according to the measurement results corresponding to the one or more reference signals, and determine the preamble corresponding to the target reference signal as the target preamble;
  • the determining unit 122 is configured to determine the target PRU corresponding to the target Preamble based on the corresponding relationship
  • the sending unit 123 is configured to send the first message of random access through the target PRU.
  • a random access device is provided. As shown in FIG. 13, the random access device includes a sending module 210 and a receiving module 220:
  • the sending module 210 is configured to indicate resource configuration information to the terminal, and the resource configuration information is used for non-competitive random access to the physical uplink shared control channel PUSCH resource information corresponding to CFRA;
  • the receiving module 220 is configured to receive random access initiated on the PUSCH resource indicated by the terminal through the resource configuration information.
  • the resource configuration information is also used to indicate contention for random access to PUSCH resources corresponding to CBRA.
  • the resource configuration information includes first configuration information and second configuration information; the first configuration information is used to indicate the PUSCH resource corresponding to CFRA; the second configuration information is used to indicate the PUSCH resource corresponding to CBRA.
  • the first configuration information is also used to indicate the PUSCH resource corresponding to CBRA.
  • the resource configuration information further includes third configuration information; the third configuration information is used to indicate the PUSCH resource corresponding to CBRA.
  • the first configuration information and the second configuration information include one or more configuration parameters; the first configuration information and the second configuration information include the same type of configuration parameters.
  • the types of configuration parameters include at least one of modulation mode, start position of time-frequency resources, number of occupied resource blocks RB, number of persistent symbols, and demodulation reference signal DMRS information.
  • At least one type of configuration parameter has a different value.
  • the transmittable data size TB size corresponding to the first configuration information is the same as the TB size corresponding to the second configuration information.
  • the TB size is determined by one or more types of configuration parameters in the configuration information.
  • the sending module 210 is specifically configured to: transparently transmit a radio resource control RRC message to the terminal through the original network device; the RRC message includes part of the bandwidth BWP and resource configuration information.
  • the RRC message further includes indication parameters for indicating the physical random access channel PRACH resources and the preamble sequence, and the offset between the PRACH resource access timing RO and the PUSCH resource timing PO.
  • the indication parameter includes: one or more reference signals corresponding to CFRA, and a mapping relationship between one or more reference signals and one or more preambles.
  • the one or more reference signals include one or more synchronization signal blocks SSB and/or one or more channel state information reference signals CSI-RS.
  • the random access device can be divided into different modules as needed to complete all or part of the functions of the random access device.
  • Each module in the above-mentioned random access device can be implemented in whole or in part by software, hardware, and a combination thereof.
  • the above-mentioned modules may be embedded in the form of hardware or independent of the processor in the computer equipment, or may be stored in the memory of the computer equipment in the form of software, so that the processor can call and execute the operations corresponding to the above-mentioned modules.
  • Fig. 14 is a schematic diagram of the internal structure of a network device in an embodiment.
  • the network device includes a processor, a non-volatile storage medium, an internal memory, and a network interface connected through a system bus.
  • the processor is used to provide computing and control capabilities to support the operation of the entire electronic device.
  • the memory is used to store data, programs, etc., and at least one computer program is stored in the memory, and the computer program can be executed by the processor to implement the wireless network communication method suitable for network devices provided in the embodiments of the present application.
  • the memory may include a non-volatile storage medium and internal memory.
  • the non-volatile storage medium stores an operating system and a computer program.
  • the computer program can be executed by the processor to implement a random access method provided in the following embodiments.
  • the internal memory provides a cached operating environment for the operating system computer program in the non-volatile storage medium.
  • the network interface can be an Ethernet card or a wireless network card, etc., for communicating with external electronic devices.
  • FIG. 15 is a schematic diagram of the internal structure of a terminal in an embodiment.
  • the terminal includes a processor, a memory, a network interface, a display screen and an input device connected via a system bus.
  • the terminal's processor is used to provide computing and control capabilities.
  • the memory of the terminal includes a non-volatile storage medium and an internal memory.
  • the non-volatile storage medium stores an operating system and a computer program.
  • the internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium.
  • the network interface of the terminal is used to communicate with an external terminal through a network connection.
  • the computer program is executed by the processor to realize a random access method.
  • the display screen of the terminal can be a liquid crystal display or an electronic ink display
  • the input device of the terminal can be a touch layer covered on the display, or a button, trackball or touchpad set on the terminal shell, or It is an external keyboard, touchpad or mouse, etc.
  • FIG. 14 or FIG. 15 is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the network device or terminal to which the solution of the present application is applied.
  • a specific network device or terminal may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.
  • each module in the network equipment device provided in the embodiments of the present application may be in the form of a computer program.
  • the computer program can be run on a terminal or a server.
  • the program module composed of the computer program can be stored in the memory of the terminal or the server.
  • a network device including a transmitter and a receiver:
  • the transmitter is used to indicate resource configuration information to the terminal, and the resource configuration information is used to indicate non-competitive random access physical uplink shared control channel PUSCH resource information corresponding to CFRA;
  • the receiver is used to receive random access initiated on the PUSCH resource indicated by the terminal through the resource configuration information.
  • a terminal is provided, and its internal structure diagram may be as shown in Fig. 15, including a receiver and a transmitter:
  • a receiver configured to receive resource configuration information indicated by a network device, where the resource configuration information is used to indicate the physical uplink shared control channel PUSCH resource corresponding to the non-competitive random access CFRA;
  • the transmitter is used to cooperate with the receiver to perform random access on the PUSCH resource indicated by the resource configuration information.
  • the embodiment of the present application also provides a computer-readable storage medium.
  • the embodiment of the present application also provides a computer-readable storage medium.
  • the resource configuration information is used to indicate the physical uplink shared control channel PUSCH resource information corresponding to the non-competitive random access CFRA;
  • the receiving terminal initiates random access on the PUSCH resource indicated by the resource configuration information.
  • a computer program product containing instructions that, when run on a computer, causes the computer to perform a random access method.
  • Non-volatile memory may include read only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory.
  • Volatile memory may include random access memory (RAM), which acts as external cache memory.
  • RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
  • SRAM static RAM
  • DRAM dynamic RAM
  • SDRAM synchronous DRAM
  • DDR SDRAM double data rate SDRAM
  • ESDRAM enhanced SDRAM
  • SLDRAM synchronous Link (Synchlink) DRAM
  • Rambus direct RAM
  • DRAM direct memory bus dynamic RAM
  • RDRAM memory bus dynamic RAM

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé d'accès aléatoire, un appareil, un terminal, un dispositif de réseau et un support de stockage. Ledit procédé comprend les étapes au cours desquelles : un terminal reçoit des informations de configuration de ressource indiquées par un dispositif de réseau, les informations de configuration de ressource pouvant indiquer une ressource de PUSCH correspondant à un CFRA ; puis le terminal peut procéder à un accès aléatoire sur la ressource de PUSCH indiquée par les informations de configuration de ressource. Grâce au procédé susmentionné, un terminal peut déterminer clairement quelles ressources de PUSCH sont des ressources de PUSCH correspondant à un CFRA initié, ce qui améliore l'adaptabilité de l'accès aléatoire du terminal.
PCT/CN2020/074533 2020-02-07 2020-02-07 Procédé d'accès aléatoire, appareil, terminal, dispositif de réseau et support de stockage Ceased WO2021155591A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2020/074533 WO2021155591A1 (fr) 2020-02-07 2020-02-07 Procédé d'accès aléatoire, appareil, terminal, dispositif de réseau et support de stockage
CN202080077065.XA CN115245035B (zh) 2020-02-07 2020-02-07 随机接入方法、装置、终端、网络设备和存储介质

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/074533 WO2021155591A1 (fr) 2020-02-07 2020-02-07 Procédé d'accès aléatoire, appareil, terminal, dispositif de réseau et support de stockage

Publications (1)

Publication Number Publication Date
WO2021155591A1 true WO2021155591A1 (fr) 2021-08-12

Family

ID=77199172

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/074533 Ceased WO2021155591A1 (fr) 2020-02-07 2020-02-07 Procédé d'accès aléatoire, appareil, terminal, dispositif de réseau et support de stockage

Country Status (2)

Country Link
CN (1) CN115245035B (fr)
WO (1) WO2021155591A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023225828A1 (fr) * 2022-05-23 2023-11-30 北京小米移动软件有限公司 Procédés et appareils de configuration de transmission de multiples canaux prach prenant en charge des ssb croisés

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118785346A (zh) * 2023-04-07 2024-10-15 维沃移动通信有限公司 定时同步状态变化的处理方法、装置、设备及存储介质
CN119450790A (zh) * 2023-08-02 2025-02-14 夏普株式会社 由用户设备执行的方法以及用户设备
CN120358629A (zh) * 2024-01-19 2025-07-22 北京小米移动软件有限公司 通信方法、终端、网络设备、系统及存储介质
WO2025208306A1 (fr) * 2024-04-01 2025-10-09 北京小米移动软件有限公司 Procédé de transmission d'informations, terminal, dispositif de réseau, et support de stockage

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190215749A1 (en) * 2018-01-11 2019-07-11 FG Innovation Company Limited Uplink carrier configuration and selection with supplementary uplink
CN110583090A (zh) * 2017-05-05 2019-12-17 高通股份有限公司 对于用于切换的无竞争的和基于竞争的随机接入的ue选择

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109392186B (zh) * 2017-08-10 2021-01-08 维沃移动通信有限公司 随机接入方法、终端、网络设备及计算机可读存储介质
CN109803398B (zh) * 2017-11-17 2023-06-02 华为技术有限公司 通信方法及其终端设备、网络设备
AR114402A1 (es) * 2018-03-02 2020-09-02 Ericsson Telefon Ab L M Asignación de recursos del dominio de tiempo para la transmisión por el canal físico compartido de enlace ascendente
CN114499809B (zh) * 2018-04-13 2023-10-03 华硕电脑股份有限公司 无线通信系统中用于数据传送的波束指示的方法和设备
US10972948B2 (en) * 2018-05-18 2021-04-06 Lenovo (Singapore) Pte. Ltd. Random access skip configuration
TW202008836A (zh) * 2018-07-25 2020-02-16 大陸商Ｏｐｐｏ廣東移動通信有限公司 隨機存取的方法和通訊設備

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110583090A (zh) * 2017-05-05 2019-12-17 高通股份有限公司 对于用于切换的无竞争的和基于竞争的随机接入的ue选择
US20190215749A1 (en) * 2018-01-11 2019-07-11 FG Innovation Company Limited Uplink carrier configuration and selection with supplementary uplink

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CMCC: "Discussion on 2-step CFRA", 3GPP DRAFT; R2-1915216, vol. RAN WG2, 8 November 2019 (2019-11-08), Reno, USA, pages 1 - 3, XP051817099 *
ZTE CORPORATION, SANECHIPS, VIVO, OPPO, FUJITSU, QUALCOMM, INTERDIGITAL, INTEL: "Support of CFRA with 2-step RACH", 3GPP DRAFT; R2-1914800, vol. RAN WG2, 7 November 2019 (2019-11-07), Reno, USA, pages 1 - 8, XP051815770 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023225828A1 (fr) * 2022-05-23 2023-11-30 北京小米移动软件有限公司 Procédés et appareils de configuration de transmission de multiples canaux prach prenant en charge des ssb croisés

Also Published As

Publication number Publication date
CN115245035A (zh) 2022-10-25
CN115245035B (zh) 2024-09-20

Similar Documents

Publication Publication Date Title
KR102861174B1 (ko) 듀얼-sim ue 데이터 전송 방법 및 장치, 저장매체 및 사용자 장비
CN109792660B (zh) 一种信息指示方法及装置、网络设备、终端设备
CN115245035B (zh) 随机接入方法、装置、终端、网络设备和存储介质
US20200178315A1 (en) Resource allocation method, terminal, and network device
US12003450B2 (en) Signal transmission method and device and terminal
CA3096565C (fr) Procede et appareil d'acces a un canal de transmission de canal physique d'acces aleatoire et programme
EP3565150B1 (fr) Procédé de transmission en liaison montante, terminal, et dispositif réseau
US12034661B2 (en) Method for communication in unlicensed spectrum and device
TW202025838A (zh) 通訊方法、終端設備和網路設備
WO2020020332A1 (fr) Procédé d'accès aléatoire, dispositif terminal, et support d'informations
CN112567873B (zh) 一种信息传输的方法、设备及计算机存储介质
WO2019019057A1 (fr) Procédé de communication sans fil, dispositif terminal et dispositif de réseau
US11357058B2 (en) Method for transmitting random access preamble, and terminal device
EP3637899A1 (fr) Procédé, dispositif et système de planification pour la transmission de ressources
WO2020019182A1 (fr) Appareil et procédé de transmission de signal, dispositif terminal, et dispositif de réseau
US11032815B2 (en) Wireless communication method and wireless communications apparatus
US20210136813A1 (en) Random Access Method and Apparatus
JP2023505916A (ja) クロスキャリア伝送方法及び装置、端末機器
WO2024032796A1 (fr) Procédé de communication et appareil associé
CN114071668B (zh) 定位方法、装置、终端及基站
US20250203484A1 (en) Configuration method and apparatus
US11950293B2 (en) Random access method and terminal device, and network device
WO2018202048A1 (fr) Procédé d'accès aléatoire, dispositif de réseau et dispositif terminal

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20917429

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20917429

Country of ref document: EP

Kind code of ref document: A1