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CN-121984641-A - Data transmission method and related device

CN121984641ACN 121984641 ACN121984641 ACN 121984641ACN-121984641-A

Abstract

The application provides a data transmission method and a related device, wherein an exemplary terminal device receives first data sent by a network device, the terminal device sends first indication information to the network device, the first indication information is used for indicating that decoding of the first data fails and decoding difficulty exists when the terminal device decodes the first data, the terminal device receives second data sent by the network device, the second data is data related to the first data and retransmitted by the network device according to a retransmission strategy, and the retransmission strategy is determined according to the first indication information. The first indication information enables the feedback of the terminal equipment to the network equipment to deepen the indication from decoding failure to decoding difficulty, and provides more comprehensive diagnostic information for data retransmission of the network equipment so as to improve the success rate of the data retransmission and improve the efficiency.

Inventors

  • XU YIN
  • PANG GAOKUN
  • LI XIAOYUAN
  • HUANG SIYUAN

Assignees

  • 荣耀终端股份有限公司
  • 上海交通大学

Dates

Publication Date
20260505
Application Date
20260327

Claims (20)

  1. 1. A data transmission method, comprising: The terminal equipment receives first data sent by the network equipment; The terminal equipment sends first indication information to the network equipment, wherein the first indication information is used for indicating that the first data fails to be decoded and the decoding difficulty exists when the terminal equipment decodes the first data; and the terminal equipment receives second data sent by the network equipment, wherein the second data is data which is retransmitted by the network equipment according to a retransmission strategy and is related to the first data, and the retransmission strategy is determined according to the first indication information.
  2. 2. The method of claim 1, further comprising the step of the terminal device receiving second indication information sent by the network device, wherein the second indication information is used for indicating a decoding algorithm adopted by the terminal device; And the terminal equipment decodes the second data by using the decoding algorithm.
  3. 3. The method according to claim 2, wherein the second indication information is included in downlink control information, DCI, sent by the network device.
  4. 4. The method of claim 1, wherein the first indication information is used to point to a first type of code block group CBG in the first data, or the first indication information is used to indicate a duty cycle of all first type CBGs in all CBGs that fail decoding, where the first type CBG is a CBG that fails decoding and has difficulty in decoding.
  5. 5. The method of claim 4, wherein the first indication information comprises an identification of the first type CBG and/or, The first indication information records a first type CBG in all CBGs which fail in decoding through a first value, the first indication information records a second type CBG in all CBGs which fail in decoding through a second value, and the second type CBG is the CBG which fail in decoding and has no decoding difficulty.
  6. 6. The method of claim 4, wherein the first indication information is obtained according to a first preset condition and a duty ratio of all CBGs failing in decoding in the first data, and the first preset condition is used for determining contents included in the first indication information by combining the duty ratio in the first data.
  7. 7. The method of claim 6, wherein the first preset condition includes a first preset threshold and a second preset threshold, the first preset threshold being smaller than the second preset threshold, wherein the first indication information is obtained according to the ratios of all CBGs failing in decoding in the first data and the first preset condition, and wherein the first indication information includes: if the duty ratio of all the CBGs failing to decode in the first data is smaller than the first preset threshold, the first indication information includes an identifier of the first type CBG; If the duty ratio of all the CBGs with decoding failure in the first data is greater than or equal to the first preset threshold value but less than or equal to the second preset threshold value, the first indication information records a first type CBG in all the CBGs with decoding failure through a first value, the first indication information records a second type CBG in all the CBGs with decoding failure through a second value, and the second type CBG is the CBG with decoding failure and no decoding difficulty; And if the duty ratio of all CBGs failing in decoding in the first data is larger than the second preset threshold value, the first indication information comprises the duty ratio of all CBGs of the first type in all CBGs failing in decoding.
  8. 8. The method of claim 4, wherein when the first indication information is used to indicate the duty ratio of all CBGs of the first type in all CBGs that fail in decoding, the first indication information is obtained according to the duty ratio of all CBGs of the first type in all CBGs that fail in decoding and a second preset condition, and the second preset condition is used to determine the content of the first indication information record in combination with the duty ratio.
  9. 9. The method of claim 8, wherein the second preset condition includes a third preset threshold and a fourth preset threshold, and wherein the first indication information is obtained according to the second preset condition and the duty ratio of all CBGs of the first type in all CBGs failing in decoding includes: if the duty ratio of all the first type CBGs in all CBGs failing in decoding is smaller than a third preset threshold value, the first indication information records a third value; if the duty ratio of all the first type CBGs in all CBGs failing in decoding is larger than or equal to the third preset threshold value, the duty ratio of all the first type CBGs in all CBGs failing in decoding is smaller than or equal to the fourth preset threshold value, all the first type CBGs are distributed in clusters, and the first indication information records a fourth value; If the duty ratio of all the first type CBGs in all CBGs failing in decoding is larger than or equal to the third preset threshold value, and the duty ratio of all the first type CBGs in all CBGs failing in decoding is smaller than or equal to the fourth preset threshold value, all the first type CBGs are distributed in a scattered way, and the first indication information records a fifth value; And if the duty ratio of all the first type CBGs in all the CBGs with decoding failure is larger than the fourth preset threshold value, the first indication information records a sixth value.
  10. 10. The method according to any of claims 1 to 9, wherein the first indication information is included in uplink control information UCI sent by the terminal device.
  11. 11. The method according to any one of claims 1 to 9, wherein the retransmission policy includes a redundancy version RV identifier corresponding to a first type CBG in the first data, where the first type CBG is a CBG that fails in decoding and has decoding difficulty, and the RV identifier corresponding to the first type CBG is determined according to the first indication information and the RV identifier corresponding to the first data.
  12. 12. The method of claim 11, wherein the first indication information comprises an identification of a first type CBG, wherein determining an RV identification corresponding to the first type CBG based on the first indication information and the RV identification corresponding to the first data comprises: and if the RV corresponding to the first data is identified as one of RV3 and RV0, the RV corresponding to the first type CBG is identified as the other of RV3 and RV0, or if the RV corresponding to the first data is identified as one of RV2 and RV1, the RV corresponding to the first type CBG is identified as the other of RV2 and RV 1.
  13. 13. The method of claim 11, wherein the first indication information records a first type CBG of all CBGs that fail in decoding by a first value, the first indication information records a second type CBG of all CBGs that fail in decoding by a second value, the second type CBG being a CBG that fails in decoding and has no difficulty in decoding, and wherein determining an RV identification corresponding to the first type CBG according to the first indication information and the RV identification corresponding to the first data comprises: And determining the RV identifier corresponding to the first type CBG according to the RV identifier corresponding to the first data and the preset sequence of the RV identifier, wherein the preset sequence of the RV identifier is RV0→RV3→RV1→RV2.
  14. 14. The method of claim 11, wherein the first indication information is used to indicate a ratio of all CBGs of the first type to CBGs of all decoding failures, wherein determining the RV identifier corresponding to the CBG of the first type according to the first indication information and the RV identifier corresponding to the first data comprises: If the first indication information records a third value, determining the RV identifier corresponding to the first type CBG according to the RV identifier corresponding to the first data and the RV identifier sequence specified by a standard protocol, wherein the RV identifier sequence specified by the standard protocol is RV0→RV2→RV3→RV1; If the first indication information records a fourth value, the RV corresponding to the first data is identified as one of RV3 and RV0, the RV corresponding to the first type CBG is identified as the other of RV3 and RV0, or if the first indication information records a fourth value, the RV corresponding to the first data is identified as one of RV2 and RV1, the RV corresponding to the first type CBG is identified as the other of RV2 and RV 1; if the first indication information records a fifth value, determining an RV identifier corresponding to the first type CBG according to the RV identifier corresponding to the first data and a preset sequence of the RV identifiers, wherein the preset sequence of the RV identifiers is RV0, RV3, RV1 and RV2; And if the first indication information records a sixth value, retransmitting the first data by the network equipment.
  15. 15. A data transmission method, comprising: The network equipment sends first data to the terminal equipment; The network equipment receives first indication information sent by the terminal equipment, wherein the first indication information is used for indicating that the first data fails to be decoded and the terminal equipment has decoding difficulty when decoding the first data; the network device sends second data to the terminal device, wherein the second data is data which is retransmitted by the network device according to a retransmission strategy and is related to the first data, and the retransmission strategy is determined according to the first indication information.
  16. 16. The method as recited in claim 15, further comprising: the network device sends second indication information to the terminal device, wherein the second indication information is used for indicating a decoding algorithm adopted by the terminal device.
  17. 17. The method according to claim 16, wherein the second indication information is included in downlink control information, DCI, sent by the network device.
  18. 18. The method of claim 15, wherein the first indication information is used to point to a first type of code block group CBG in the first data, or the first indication information is used to indicate a ratio of all first type CBGs to all CBGs that fail decoding, wherein the first type CBG is a CBG that fails decoding and has difficulty in decoding.
  19. 19. The method of claim 18, wherein the first indication information comprises an identification of the first type of CBG and/or, The first indication information records a first type CBG in all CBGs which fail in decoding through a first value, the first indication information records a second type CBG in all CBGs which fail in decoding through a second value, and the second type CBG is the CBG which fail in decoding and has no decoding difficulty.
  20. 20. The method of claim 18, wherein the first indication information is obtained according to a first preset condition and a duty ratio of all CBGs failing in decoding in the first data, and the first preset condition is used for determining contents included in the first indication information in combination with the duty ratio in the first data.

Description

Data transmission method and related device Technical Field The present application relates to the field of communications technologies, and in particular, to a data transmission method and a related device. Background At present, the communication system builds a reliability guarantee mechanism of two cores of error correction processing and retransmission, but the reliability guarantee mechanism has a certain problem to be solved. Disclosure of Invention The application provides a data transmission method and a related device, which are used for solving at least part of the problems, and the disclosed technical scheme is as follows: In a first aspect, a method for data transmission is provided, which may be performed by a terminal device, or may also be performed by a component (such as a circuit, a chip, or a chip system) configured in the terminal device, or may be implemented by a logic module or software capable of implementing all or part of the functions of the terminal device. The application is not limited in this regard. The following description will take a terminal device as an example. The method comprises the steps that terminal equipment receives first data sent by network equipment, the terminal equipment sends first indication information to the network equipment, the first indication information is used for indicating that the first data is failed to decode and decoding difficulty exists when the terminal equipment decodes the first data, the terminal equipment receives second data sent by the network equipment, the second data is data which are retransmitted by the network equipment and are related to the first data, and the retransmission strategy is determined according to the first indication information. The first indication information enables the feedback of the terminal equipment to the network equipment to deepen the indication from decoding failure to decoding difficulty, and provides more comprehensive diagnostic information for data retransmission of the network equipment so as to improve the success rate of the data retransmission and improve the efficiency. In one implementation manner, the method further comprises the steps that the terminal equipment receives second indication information sent by the network equipment, the second indication information is used for indicating a decoding algorithm adopted by the terminal equipment, the terminal equipment decodes the second data by utilizing the decoding algorithm, so that the terminal equipment can configure a plurality of decoding algorithms, and selects a corresponding decoding algorithm to decode according to the second indication information, so that the decoding success rate is improved, and optimization of system resources and computing resources is achieved. The decoding algorithm indicated by the second indication information is a decoding algorithm matched with the retransmission strategy, and the decoding algorithm is configured for the retransmission strategy, so that the decoding success rate can be improved. And the scheme constructs a bidirectional and symmetrical cooperative control closed loop of the network equipment and the terminal equipment on the aspects of retransmission strategy and decoding capability. In one aspect, in the uplink feedback loop, the network device may perform a differentiated adaptive retransmission policy according to the received first indication information. On the other hand, the network device utilizes the second indication information to embed a decoding strategy, the decoding strategy points to a decoding algorithm used by the terminal device, the terminal device can be indicated to dynamically adjust the decoding algorithm through the second indication information, and the bidirectional closed-loop mechanism realizes optimization of computing resources and energy consumption of the terminal device. In one implementation manner, the second indication information is included in the downlink control information DCI sent by the network device, so that the second indication information can be added in the DCI, and the second indication information is sent while resource data (such as a video resource position of the PDSCH) is sent, thereby simplifying the flow. In one implementation manner, the first indication information is used for pointing to a CBG of a first type code block group in the first data, or the first indication information is used for indicating the duty ratio of all CBGs of the first type in all CBGs with decoding failure, where the CBGs of the first type are CBGs with decoding failure and decoding difficulty, so that the CBGs with decoding difficulty are indicated by the first indication information, and data retransmission is facilitated. In one implementation, the first indication information includes an identifier of the first type CBG, and/or the first indication information records a first type CBG in all CBGs with decoding failure through a first value, and