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EP-4738980-A2 - COMMUNICATION METHOD AND COMMUNICATION APPARATUS

EP4738980A2EP 4738980 A2EP4738980 A2EP 4738980A2EP-4738980-A2

Abstract

Provided are a communication method and a communication apparatus. The method includes: performing, by a terminal device, first Small Data Transmission (SDT) on a preConfigured Grant (CG) resource corresponding to a first Synchronization Signal Black (SSB), wherein the terminal device is in an inactive state; and performing, by the terminal device, second SDT on the CG resource corresponding to the first SSB. According to the method in the embodiments of the disclosure, SDT of a User Equipment (UE) in an inactive state can be implemented.

Inventors

  • LIN, Xue
  • WANG, SHUKUN

Assignees

  • GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

Dates

Publication Date
20260506
Application Date
20210817

Claims (15)

  1. A communication method, comprising: performing, by a terminal device, first Small Data Transmission (SDT) on a Configured Grant (CG) resource corresponding to a first Synchronization Signal Black (SSB), wherein the terminal device is in an inactive state; determining, by a terminal device, a first resource in a condition where Timing Advance (TA) corresponding to the terminal device is valid, Reference Signal Receiving Power (RSRP) of the first SSB meets a preset threshold and there is a CG resource corresponding to the first SSB; or, determining the first resource in a condition where the TA corresponding to the terminal device is valid, the first SSB does not meet the preset threshold, the RSRP of the second SSB meets the preset threshold and there is a CG resource corresponding to the second SSB, wherein the first SSB is one of a plurality of SSBs, and the second SSB is an SSB in the plurality of SSBs other than the first SSB; and performing, by a terminal device, second SDT on the first resource.
  2. The method of claim 1, wherein the first resource is the CG resource corresponding to the first SSB; and the TA corresponding to the terminal device is valid and the RSRP of the first SSB meets the preset threshold.
  3. The method of claim 1, wherein the first resource is the CG resource corresponding to the second SSB; and the TA corresponding to the terminal device is valid, the RSRP of the first SSB does not meet the preset threshold, and the RSRP of the second SSB meets the preset threshold.
  4. The method of claim 1, wherein when none of the conditions is met, the method further comprises: initiating a contention-based random access process, and in the random access process, sending, by the terminal device, identity identifier information of the terminal device through a message Msg3 or a message MsgA; and monitoring, by the terminal device, dynamic scheduling of a network device to determine the first resource.
  5. The method of claim 4, further comprising: releasing or suspending, by the terminal device, at least one CG resource corresponding to at least one of the plurality of SSBs.
  6. The method of claim 5, wherein releasing or suspending, by the terminal device, the at least one CG resource corresponding to at least one of the plurality of SSBs comprises: releasing or suspending, by the terminal device, the at least one CG resource corresponding to the at least one SSB when at least one of followings is met: a contention collision resolution message being received from the network device; after the contention collision resolution message is received, indication information configured to release or suspend the at least one CG resource corresponding to the at least one SSB being received from the network device; and none of the conditions being met.
  7. The method of any one of claims 1 to 6, wherein at least one CG resource corresponding to at least one of the plurality of SSBs is configured by a network device.
  8. A communication method, comprising: receiving, by a network device, first Small Data Transmission (SDT) on a Configured Grant (CG) resource corresponding to a first Synchronization Signal Black (SSB) from a terminal device which is in an inactive state; and receiving, by the network device, second SDT on a first resource from the terminal device, wherein the first resource is determined in a condition where Timing Advance (TA) corresponding to the terminal device is valid, Reference Signal Receiving Power (RSRP) of the first SSB meets a preset threshold and there is a CG resource corresponding to the first SSB; or, the first resource is determined in a condition where the TA corresponding to the terminal device is valid, the first SSB does not meet the preset threshold, the RSRP of the second SSB meets the preset threshold and there is a CG resource corresponding to the second SSB, wherein the first SSB is one of a plurality of SSBs, and the second SSB is an SSB in the plurality of SSBs other than the first SSB.
  9. The method of claim 8, wherein the first resource is the CG resource corresponding to the first SSB; and the TA corresponding to the terminal device is valid and the RSRP of the first SSB meets the preset threshold.
  10. The method of claim 8, wherein the first resource is the CG resource corresponding to the second SSB; and the TA corresponding to the terminal device is valid, the RSRP of the first SSB does not meet the preset threshold, and the RSRP of the second SSB meets the preset threshold.
  11. The method of claim 8, wherein when none of the conditions is met, the method further comprises: receiving, by the network device, a contention-based random access process initiated by the terminal device, and in the random access process, receiving, by the network device, identity identifier information of the terminal device that is sent by the terminal device through a message Msg3 or a message MsgA; and dynamically scheduling, by the network device, the first resource for the terminal device.
  12. The method of claim 11, wherein at least one CG resource corresponding to at least one of the plurality of SSBs is a CG resource released or suspended by the terminal device.
  13. The method of claim 12, wherein the at least one CG resource corresponding to the at least one SSB is the CG resource which is released or suspended by the terminal device when at least one of followings is met: a contention collision resolution message being received from the network device; after the contention collision resolution message is received, indication information configured to release or suspend the at least one CG resource corresponding to the at least one SSB being received from the network device; and none of the conditions being met.
  14. The method of any one of claims 8 to 13, wherein at least one CG resource corresponding to at least one of the plurality of SSBs is configured by the network device.
  15. A communication apparatus, comprising a processor, which is configured to call a program from a memory to cause the communication apparatus to implement the method of any one of claims 1 to 7 or the method of any one of claims 8-14.

Description

TECHNICAL FIELD The disclosure relates to the technical field of communications, and more specifically, to a communication method and a communication apparatus. BACKGROUND With the development of a communication technology, Small Data Transmission (SDT) under a Radio Resource Control (RRC) inactive (RRC_INACTIVE) state is introduced into some communication systems, so as to reduce unnecessary power consumption and signalling overhead. However, how to perform SDT has not been determined yet at present. Therefore, how to perform SDT becomes an urgent technical problem to be solved. SUMMARY The disclosure provides a communication method and a communication apparatus, which can realize SDT of a User Equipment (UE) in an inactive state. According to a first aspect, a communication method is provided, which includes that: a terminal device performs first SDT on a Configured Grant (CG) resource corresponding to a first Synchronization Signal Black (SSB). the terminal device being in an inactive state; and the terminal device performs second SDT on the CG resource corresponding to the first SSB. According to a second aspect, a communication method is provided, which includes that: a terminal device performs first SDT on a CG resource corresponding to a first SSB, the terminal device being in an inactive state; the terminal device determines a first resource according to a second condition; and the terminal device performs second SDT on the first resource. According to a third aspect, a communication method is provided, which includes that: a network device receives first SDT on a CG resource corresponding to a first SSB from a terminal device which is in an inactive state, and the network device receives second SDT from the terminal device on the CG resource corresponding to the first SSB. According to a fourth aspect, a communication method is provided, which includes that: a network device receives first SDT on a CG resource corresponding to a first SSB from a terminal device which is in an inactive state, and the network device receives second SDT from the terminal device on a first resource, the first resource being determined according to a second condition. According to a fifth aspect, a communication apparatus is provided, which includes a sending unit, configured to perform first SDT on a CG resource corresponding to a first SSB, the apparatus being in an inactive state. The sending unit is configured to perform second SDT on the CG resource corresponding to the first SSB. According to a sixth aspect, a communication apparatus is provided, which includes: a sending unit, configured to perform first SDT on a CG resource corresponding to a first SSB, the apparatus being in an inactive state; and a determination unit, configured to determine a first resource according to a second condition. The sending unit is configured to perform second SDT on the first resource. According to a seventh aspect, a communication apparatus is provided, which includes: a receiving unit, configured to receive first SDT on a CG resource corresponding to a first SSB from a terminal device which is in an inactive state. The receiving unit is configured to receive second SDT from the terminal device on the CG resource corresponding to the first SSB. According to an eighth aspect, a communication apparatus is provided, which includes: a receiving unit, configured to receive first SDT on a CG resource corresponding to a first SSB from a terminal device which is in an inactive state. The receiving unit is configured to receive second SDT on a first resource from the terminal device, the first resource being determined according to a second condition. According to a ninth aspect, a communication apparatus is provided, which includes a memory and a processor. The memory is configured to store a program, and the processor is configured to call the program stored in the memory, so as to execute the method described in any one of the first aspect, the second aspect, the third aspect, or the fourth aspect. According to a tenth aspect, a communication apparatus is provided, which includes a processor, which is configured to call a program from a memory, so as to execute the method described in any one of the first aspect, the second aspect, the third aspect, or the fourth aspect. According to an eleventh aspect, a chip is provided, which includes a processor configured to call a program from a memory, so as to enable a device provided with the chip to execute the method described in any one of the first aspect, the second aspect, the third aspect, or the fourth aspect. According to a twelfth aspect, a computer-readable storage medium is provided, which stores a program. The program enables a computer to execute the method described in any one of the first aspect, the second aspect, the third aspect, or the fourth aspect. According to a thirteenth aspect, a computer program product is provided, which includes a program. The program enables a com