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CN-122028214-A - Random access method, device and storage medium

CN122028214ACN 122028214 ACN122028214 ACN 122028214ACN-122028214-A

Abstract

The application provides a random access method, a device and a storage medium, relating to the technical field of communication, wherein the method comprises the steps of determining a random access opportunity RO type of at least one random access channel RACH attempt, wherein the at least one RACH attempt is a RACH attempt of which the random access type is a contention-based random access CBRA type in a non-contention-based random access CFRA process; and transmitting a preamble to the network device on an RO resource associated with the reference signal according to the RO type of the at least one RACH attempt, the RO type of the RO resource being the RO type of the at least one RACH attempt. The scheme of the embodiment of the application can select the RO resource of the proper type and complete random access according to the RO type of at least one RACH attempt by determining the RO type of the RACH attempt of the CBRA type in the CFRA process.

Inventors

  • SHEN SHULING
  • SI QIANQIAN
  • XING YANPING
  • GAO XUEJUAN
  • ZHAO YUE

Assignees

  • 大唐移动通信设备有限公司

Dates

Publication Date
20260512
Application Date
20241108

Claims (20)

  1. 1. A random access method, applied to a terminal, the method comprising: Determining a random access opportunity (RO) type of at least one Random Access Channel (RACH) attempt, wherein the at least one RACH attempt is a RACH attempt with a random access type being a contention-based random access (CBRA) type in a non-contention-based random access (CFRA) process; And transmitting a preamble to the network device on an RO resource associated with the reference signal according to the RO type of the at least one RACH attempt, wherein the RO type of the RO resource is the RO type of the at least one RACH attempt.
  2. 2. The method of claim 1, wherein the RO type of the at least one RACH attempt is determined based on the RO type of the first RACH attempt and/or the RO type of the RACH attempt in the CBRA procedure; Wherein the first RACH attempt is a RACH attempt with a random access type of CFRA type in the CFRA procedure.
  3. 3. The method according to claim 1 or 2, wherein the RO type of the at least one RACH attempt satisfies at least one of: the RO type of the second RACH attempt is the same as that of the first RACH attempt, and the second RACH attempt is any RACH attempt in the at least one RACH attempt; The RO type of the second RACH attempt is the same as the RO type of the initial RACH attempt in the CBRA procedure; The RO type of the second RACH attempt is determined based on the order of the second RACH attempt in the CFRA procedure and the RO type of RACH attempt in the CBRA procedure; the RO type of a third RACH attempt is the same as that of the first RACH attempt, the third RACH attempt is the RACH attempt with the random access type of the CBRA type in the previous M RACH attempts of the CFRA process, M is less than or equal to N, N is the maximum RACH attempt number in the CFRA process, and M and N are both positive integers; The RO type of a fourth RACH attempt is different from that of the first RACH attempt, and the fourth RACH attempt is an RACH attempt with the random access type of the CBRA type from an M+1th RACH attempt to an Nth RACH attempt of the CFRA procedure.
  4. 4. A method according to claim 3, wherein, in case the RO type of the second RACH attempt is determined based on the order of the second RACH attempt in the CFRA procedure and the RO type of the RACH attempt in the CBRA procedure, the RO type of the second RACH attempt is the same as the RO type of the i-th RACH attempt in the CBRA procedure; wherein the second RACH attempt is the ith RACH attempt in the CFRA procedure, or the second RACH attempt is the ith RACH attempt in the CFRA procedure with the type of CBRA.
  5. 5. The method according to any of claims 1-4, wherein the random access type of RACH attempt in the CFRA procedure satisfies any of the following: the random access types of N RACH attempts in the CFRA process are all determined based on Reference Signal Received Power (RSRP) of a reference signal, N is the maximum RACH attempt number in the CFRA process, and N is a positive integer; The random access types of the previous P times of RACH attempts in the CFRA process are determined based on the RSRP of the reference signals, the random access types of the P+1st to N times of RACH attempts in the CFRA process are CBRA types, P is a positive integer, and P is smaller than N.
  6. 6. The method of claim 5, wherein P satisfies: The P-th RACH attempt in the CFRA process is the RACH attempt with the first random access type being the CBRA type in the CFRA process; Or alternatively The P is the maximum number of random access types for which the terminal determines RACH attempts based on RSRP of the reference signal.
  7. 7. The method according to any of claims 1-6, wherein the CFRA procedure comprises a beam failure recovery triggered random access procedure and/or a random access procedure in which CFRA random access resources are configured by dedicated random access.
  8. 8. A random access method for use in a network device, the method comprising: Receiving a preamble sent by a terminal on RO resources associated with reference signals; Wherein the RO resource associated with the reference signal is determined according to the RO type of at least one RACH attempt, the at least one RACH attempt is a RACH attempt with a random access type of CBRA type in the CFRA process, and the RO type of the RO resource is the RO type of the at least one RACH attempt.
  9. 9. The method of claim 8, wherein the RO type of the at least one RACH attempt is determined based on the RO type of the first RACH attempt and/or the RO type of the RACH attempt in the CBRA procedure; Wherein the first RACH attempt is a RACH attempt with a random access type of CFRA type in the CFRA procedure.
  10. 10. The method according to claim 8 or 9, wherein the RO type of the at least one RACH attempt satisfies at least one of: the RO type of the second RACH attempt is the same as that of the first RACH attempt, and the second RACH attempt is any RACH attempt in the at least one RACH attempt; The RO type of the second RACH attempt is the same as the RO type of the initial RACH attempt in the CBRA procedure; The RO type of the second RACH attempt is determined based on the order of the second RACH attempt in the CFRA procedure and the RO type of RACH attempt in the CBRA procedure; the RO type of a third RACH attempt is the same as that of the first RACH attempt, the third RACH attempt is the RACH attempt with the random access type of the CBRA type in the previous M RACH attempts of the CFRA process, M is less than or equal to N, N is the maximum RACH attempt number in the CFRA process, and M and N are both positive integers; The RO type of a fourth RACH attempt is different from that of the first RACH attempt, and the fourth RACH attempt is an RACH attempt with the random access type of the CBRA type from an M+1th RACH attempt to an Nth RACH attempt of the CFRA procedure.
  11. 11. The method of claim 10, wherein, in the case where the RO type of the second RACH attempt is determined based on the order of the second RACH attempt in the CFRA procedure and the RO type of the RACH attempt in the CBRA procedure, the RO type of the second RACH attempt is the same as the RO type of the i-th RACH attempt in the CBRA procedure; wherein the second RACH attempt is the ith RACH attempt in the CFRA procedure, or the second RACH attempt is the ith RACH attempt in the CFRA procedure with the type of CBRA.
  12. 12. The method according to any of claims 8-11, wherein the random access type of RACH attempt in the CFRA procedure satisfies any of the following: the random access types of N RACH attempts in the CFRA process are determined based on RSRP of reference signals, N is the maximum RACH attempt number in the CFRA process, and N is a positive integer; The random access types of the previous P times of RACH attempts in the CFRA process are determined based on the RSRP of the reference signals, the random access types of the P+1st to N times of RACH attempts in the CFRA process are CBRA types, P is a positive integer, and P is smaller than N.
  13. 13. The method of claim 12, wherein P satisfies: The P-th RACH attempt in the CFRA process is the RACH attempt with the first random access type being the CBRA type in the CFRA process; Or alternatively The P is the maximum number of random access types for which the terminal determines RACH attempts based on RSRP of the reference signal.
  14. 14. The method according to any of claims 8-13, wherein the CFRA procedure comprises a beam failure recovery triggered random access procedure and/or a random access procedure in which CFRA random access resources are configured by dedicated random access.
  15. 15. A random access device, the device comprising: A processing module, configured to determine an RO type of at least one RACH attempt, where the at least one RACH attempt is a RACH attempt with a random access type of CBRA type in a CFRA procedure; and the first transceiver module is used for sending a preamble to the network equipment on an RO resource associated with the reference signal according to the RO type of the at least one RACH attempt, wherein the RO type of the RO resource is the RO type of the at least one RACH attempt.
  16. 16. A random access device, the device comprising: the second transceiver module is used for receiving the preamble sent by the terminal on the RO resources associated with the reference signals; Wherein the RO resource associated with the reference signal is determined according to the RO type of at least one RACH attempt, the at least one RACH attempt is a RACH attempt with a random access type of CBRA type in the CFRA process, and the RO type of the RO resource is the RO type of the at least one RACH attempt.
  17. 17. A random access device comprising a memory, a transceiver, and a processor: the system comprises a memory for storing a computer program, a transceiver for receiving and transmitting data under the control of the processor, and a processor for reading the computer program in the memory and performing the following operations: Determining the RO type of at least one RACH attempt, wherein the at least one RACH attempt is a RACH attempt with a random access type of CBRA type in CFRA; And transmitting a preamble to the network device on an RO resource associated with the reference signal according to the RO type of the at least one RACH attempt, wherein the RO type of the RO resource is the RO type of the at least one RACH attempt.
  18. 18. The apparatus of claim 17, wherein the RO type of the at least one RACH attempt is determined based on the RO type of the first RACH attempt and/or the RO type of the RACH attempt in the CBRA procedure; Wherein the first RACH attempt is a RACH attempt with a random access type of CFRA type in the CFRA procedure.
  19. 19. The apparatus of claim 17 or 18, wherein the RO type of the at least one RACH attempt satisfies at least one of: the RO type of the second RACH attempt is the same as that of the first RACH attempt, and the second RACH attempt is any RACH attempt in the at least one RACH attempt; The RO type of the second RACH attempt is the same as the RO type of the initial RACH attempt in the CBRA procedure; The RO type of the second RACH attempt is determined based on the order of the second RACH attempt in the CFRA procedure and the RO type of RACH attempt in the CBRA procedure; the RO type of a third RACH attempt is the same as that of the first RACH attempt, the third RACH attempt is the RACH attempt with the random access type of the CBRA type in the previous M RACH attempts of the CFRA process, M is less than or equal to N, N is the maximum RACH attempt number in the CFRA process, and M and N are both positive integers; The RO type of a fourth RACH attempt is different from that of the first RACH attempt, and the fourth RACH attempt is an RACH attempt with the random access type of the CBRA type from an M+1th RACH attempt to an Nth RACH attempt of the CFRA procedure.
  20. 20. The apparatus of claim 19, wherein the RO type of the second RACH attempt is the same as the RO type of the ith RACH attempt in the CBRA procedure if the RO type of the second RACH attempt is determined based on the order of the second RACH attempt in the CFRA procedure and the RO type of the RACH attempt in the CBRA procedure; wherein the second RACH attempt is the ith RACH attempt in the CFRA procedure, or the second RACH attempt is the ith RACH attempt in the CFRA procedure with the type of CBRA.

Description

Random access method, device and storage medium Technical Field The present application relates to the field of communications technologies, and in particular, to a random access method, a device, and a storage medium. Background In a non-contention based Random access (Contension Free Random Access, CFRA) procedure, a terminal may complete a Random access channel (Random ACCESS CHANNEL, RACH) attempt by selecting one of the RO resources on a Random access opportunity (PRACH Occasion, RO) resource associated with a reference signal and transmitting a preamble on the RO resource to a network device. Currently, to promote uplink coverage in time division duplex (Time Division Duplex, TDD) systems, sub-band non-overlapping full duplex (Subband non-overlapping Full Duplex, SBFD) techniques are proposed. In the SBFD system, RO resources include two types, one is a dedicated RO type for a terminal supporting SBFD and one is an RO type available to all terminals. In SBFD systems, for RACH attempts in CFRA procedure, the random access type is contention based random access (Contension Based Random Access, CBRA) type, how to implement random access is a technical problem to be solved. Disclosure of Invention The application provides a random access method, a device and a storage medium, which solve the technical problem of how to realize random access in a random access type (CBRA) RACH attempt in a CFRA process. In a first aspect, the present application provides a random access method, applied to a terminal, the method comprising: determining a random access opportunity (RO) type of at least one Random Access Channel (RACH) attempt, wherein the at least one RACH attempt is a RACH attempt with a random access type being a contention-based random access (CBRA) type in a non-contention-based random access (CFRA) process; And transmitting a preamble to the network device on an RO resource associated with the reference signal according to the RO type of the at least one RACH attempt, the RO type of the RO resource being the RO type of the at least one RACH attempt. In some embodiments, the RO type of at least one RACH attempt is determined based on the RO type of the first RACH attempt and/or the RO type of the RACH attempt in the CBRA procedure; wherein the first RACH attempt is a RACH attempt of a CFRA type of a random access type in a CFRA procedure. In some embodiments, the RO type of at least one RACH attempt satisfies at least one of: The RO type of the second RACH attempt is the same as that of the first RACH attempt, and the second RACH attempt is any RACH attempt in at least one RACH attempt; the RO type of the second RACH attempt is the same as the RO type of the initial RACH attempt in the CBRA procedure; the RO type of the second RACH attempt is determined based on the order of the second RACH attempt in the CFRA procedure and the RO type of the RACH attempt in the CBRA procedure; The RO type of the third RACH attempt is the same as that of the first RACH attempt, the third RACH attempt is RACH attempt with the random access type of CBRA type in the first M RACH attempts of CFRA process, M is less than or equal to N, N is the maximum RACH attempt times in CFRA process, and M and N are both positive integers; The RO type of the fourth RACH attempt is different from that of the first RACH attempt, and the fourth RACH attempt is an RACH attempt with a random access type of CBRA type from an M+1th RACH attempt to an Nth RACH attempt of the CFRA procedure. In some embodiments, where the RO type of the second RACH attempt is determined based on the order of the second RACH attempt in the CFRA procedure and the RO type of the RACH attempt in the CBRA procedure, the RO type of the second RACH attempt is the same as the RO type of the i-th RACH attempt in the CBRA procedure; Wherein the second RACH attempt is the ith RACH attempt in the CFRA procedure, or the second RACH attempt is the ith RACH attempt in the CFRA procedure, and the type of random access is the type of CBRA. In some embodiments, the random access type of RACH attempt in CFRA procedure satisfies any one of the following: the random access types of N RACH attempts in the CFRA process are all determined based on the reference signal received power RSRP of the reference signal, N is the maximum RACH attempt number in the CFRA process, and N is a positive integer; The random access types of the previous P RACH attempts in the CFRA process are determined based on the RSRP of the reference signals, the random access types of the P+1st RACH attempt to the N RACH attempt in the CFRA process are CBRA types, P is a positive integer, and P is smaller than N. In some embodiments, P satisfies: The P-th RACH attempt in the CFRA process is a RACH attempt with the first random access type of CBRA type in the CFRA process; Or alternatively P is the maximum number of random access types for which the terminal determines RACH attempts based on the RSRP of the reference