CN-122027094-A - Communication method and device

Abstract

The application provides a communication method and a communication device. The method includes receiving first information on a first carrier and transmitting or receiving Q1 data on a first time unit. The first information is used for scheduling Q1 data on the first time unit, the first information comprises first indication information, the first indication information indicates N HARQ processes, the N HARQ processes are associated with the Q1 data, N is an integer greater than or equal to 2, and Q1 is an integer greater than or equal to N.

Inventors

• YI FENG
• SU HONGJIA
• Pan Meizhu
• CHENG YAN

Assignees

• 华为技术有限公司

Dates

Publication Date

20260512

Application Date

20241108

Claims (20)

1. 1. A communication method, applied to a terminal device or a chip in a terminal device, comprising: Receiving first information on a first carrier, wherein the first information is used for scheduling Q1 data on a first time unit, the first information comprises first indication information, the first indication information indicates N HARQ processes, the N HARQ processes are associated with the Q1 data, N is an integer greater than or equal to 2, and Q1 is an integer greater than or equal to N; the Q1 data is transmitted or received on the first carrier on the first time unit.
2. 2. The method of claim 1, wherein the Q1 data comprises first data and second data; wherein the transmission corresponding to the first data is primary transmission, and the transmission corresponding to the second data is retransmission, or The corresponding transmission of the first data and the second data is primary transmission, or And the transmission corresponding to the first data and the second data is retransmitted.
3. 3. The method of claim 2, wherein the N HARQ processes comprise a first HARQ process and a second HARQ process, the first data being associated with the first HARQ process and the second data being associated with the second HARQ process.
4. 4. A method according to any one of claims 1 to 3, characterized in that before receiving the first information on the first carrier, the method further comprises: And sending second information, wherein the second information indicates the maximum HARQ process number supported by the terminal equipment in one time unit.
5. 5. The method according to any one of claims 1 to 4, wherein the N HARQ processes are located in M HARQ processes, M-N HARQ processes are associated with Q2 data, M represents a number of HARQ processes corresponding to data to be transmitted by the terminal device, the data to be transmitted is Q data, q=q1+q2, Q2 is an integer greater than or equal to M-N, and M is an integer greater than or equal to N.
6. 6. The method of claim 5, wherein the Q1 data is determined from the Q data based on a first rule; wherein the first rule includes at least one of: the residual data packet delay budget PDB of the Q1 data is smaller than the residual PDB of the Q2 data; the transmission corresponding to the Q1 data is retransmission, and the transmission corresponding to the Q2 data is primary transmission; the transmission corresponding to the Q1 data and the Q2 data are retransmitted, and the retransmission times of the Q1 data are higher than those of the Q2 data; The channel interference is greater than or equal to a first threshold, and the transmission reliability of the Q1 data is lower than the transmission reliability of the Q2 data; The channel interference is smaller than a first threshold, and the transmission reliability of the Q1 data is higher than the transmission reliability of the Q2 data; the channel busy rate CBR is greater than or equal to a second threshold and the transmission reliability of the Q1 data is lower than the transmission reliability of the Q2 data, or The channel busy rate CBR is smaller than the second threshold, and the transmission reliability of the Q1 data is higher than the transmission reliability of the Q2 data.
7. 7. The method according to any of claims 1 to 6, characterized in that the time unit is the smallest unit in time domain for transmitting data.
8. 8. The method of claim 7, wherein the data comprises at least one of a transport block TB, a sub-transport block, a code block, a group of code blocks, a set of code blocks, or a cluster of code blocks, and wherein the first time unit comprises a first time slot or a first micro-slot or a first symbol.
9. 9. A communication method, applied to a network device or a chip in a network device, comprising: Transmitting first information on a first carrier, wherein the first information is used for scheduling Q1 data on a first time unit, the first information comprises first indication information, the first indication information indicates N HARQ processes, the N HARQ processes are associated with the Q1 data, N is an integer greater than or equal to 2, and Q1 is an integer greater than or equal to N; the Q1 data is received or transmitted on the first carrier over the first time unit.
10. 10. The method of claim 9, wherein the Q1 data comprises first data and second data; wherein the transmission corresponding to the first data is primary transmission, and the transmission corresponding to the second data is retransmission, or The corresponding transmission of the first data and the second data is primary transmission, or And the transmission corresponding to the first data and the second data is retransmitted.
11. 11. The method of claim 9 or 10, wherein the N HARQ processes comprise a first HARQ process and a second HARQ process, the first data being associated with the first HARQ process and the second data being associated with the second HARQ process.
12. 12. The method according to any of claims 9 to 11, characterized in that before transmitting the first information on the first carrier, the method further comprises: And receiving second information, wherein the second information indicates the maximum HARQ process number supported by the terminal equipment in one time unit.
13. 13. The method according to any one of claims 9 to 12, wherein the N HARQ processes are located in M HARQ processes, M-N HARQ processes are associated with Q2 data, M represents a number of HARQ processes corresponding to data to be transmitted by the terminal device, the data to be transmitted is Q data, q=q1+q2, Q2 is an integer greater than or equal to M-N, and M is an integer greater than or equal to N.
14. 14. The method of claim 13, wherein the Q1 data is determined from the Q data based on a first rule; wherein the first rule includes at least one of: the residual data packet delay budget PDB of the Q1 data is smaller than the residual PDB of the Q2 data; the transmission corresponding to the Q1 data is retransmission, and the transmission corresponding to the Q2 data is primary transmission; the transmission corresponding to the Q1 data and the Q2 data are retransmitted, and the retransmission times of the Q1 data are higher than those of the Q2 data; The channel interference is greater than or equal to a first threshold, and the transmission reliability of the Q1 data is lower than the transmission reliability of the Q2 data; The channel interference is smaller than a first threshold, and the transmission reliability of the Q1 data is higher than the transmission reliability of the Q2 data; the channel busy rate CBR is greater than or equal to a second threshold and the transmission reliability of the Q1 data is lower than the transmission reliability of the Q2 data, or The channel busy rate CBR is smaller than the second threshold, and the transmission reliability of the Q1 data is higher than the transmission reliability of the Q2 data.
15. 15. The method according to any of claims 9 to 14, characterized in that the time unit is the smallest unit in time domain for transmitting data.
16. 16. The method of claim 15, wherein the data comprises at least one of a transport block TB, a sub-transport block, a code block, a group of code blocks, a set of code blocks, or a cluster of code blocks, and wherein the first time unit comprises a first time slot or a first micro-slot or a first symbol.
17. 17. A communication device for implementing the method according to any of claims 1-8.
18. 18. The communication apparatus according to claim 17, wherein the communication apparatus comprises any one of a terminal device or a chip.
19. 19. A communication device for implementing the method according to any of claims 9-16.
20. 20. The communication apparatus according to claim 19, wherein the communication apparatus comprises any one of a network device, a chip, a central unit CU or a distributed unit DU.

Description

Communication method and device Technical Field The present application relates to the field of communications, and more particularly, to a communication method and apparatus. Background In the air interface transmission process, transmission bit errors or packet loss may occur, and the robustness of the air interface transmission can be improved through a hybrid automatic repeat request (hybrid automatic repeat request, HARQ) mechanism. The HARQ mechanism adopts a stop-and-wait protocol, i.e., the sender stops waiting for feedback from the receiver each time the sender sends information. In order to improve transmission efficiency, HARQ employs parallel processing of a plurality of stop-and-wait processes. Specifically, while waiting for acknowledgement, the transmitting end may continue to transmit information using another HARQ process, and likewise, while processing information received by one HARQ process, the receiving end may continue to receive information using another HARQ process. However, under low latency constraints, there may be transmission opportunity collisions between multiple data to be transmitted for the terminal device. Disclosure of Invention The application provides a communication method and a communication device, which can reduce transmission conflict of a plurality of data and improve transmission performance. In a first aspect, a method of communication is provided. The method can be applied to a terminal side, such as a terminal device or a communication module in the terminal device, or a circuit or a chip (such as a modem (modem) chip, also called a baseband (baseband) chip, or a system on chip (SoC) chip or a system in package (SYSTEMIN PACKAGE, SIP) chip) containing a modem core, which is responsible for communication functions in the terminal device. For convenience of description, an example of application of the method to the terminal device will be described. In the method, a terminal device receives first information on a first carrier, wherein the first information is used for scheduling Q1 data on a first time unit, the first information comprises first indication information, the first indication information indicates N HARQ processes, the N HARQ processes are associated with the Q1 data, N is an integer greater than or equal to 2, and Q1 is an integer greater than or equal to N, and the Q1 data is transmitted or received on the first carrier on the first time unit. By adopting the method, for the first carrier, the terminal equipment can receive or transmit a plurality of data on the first time unit, so that transmission conflict among the plurality of data is reduced, the plurality of data is transmitted as much as possible under the constraint of low time delay, throughput is improved, and transmission performance is ensured. Or, the transmission delay can be reduced and the transmission efficiency can be improved by transmitting a plurality of data through the first time unit. With reference to the first aspect, in some implementations, the time unit is a minimum unit for transmitting data in the time domain, e.g., 1 slot or 1 symbol or 1 minislot, etc. With reference to the first aspect, in some implementations, the data includes at least one of a transport block (transmission block, TB), a sub-transport block, a code block, a group of code blocks, a set of code blocks, a cluster of code blocks, or other independent transport, and the first time unit includes a first time slot or a first minislot or a first symbol. With reference to the first aspect, in certain implementations, the Q1 data includes first data and second data. The transmission corresponding to the first data is primary transmission, the transmission corresponding to the second data is retransmission, or the transmission corresponding to the first data and the second data is primary transmission, or the transmission corresponding to the first data and the second data is retransmission. With reference to the first aspect, in some implementations, the N HARQ processes include a first HARQ process and a second HARQ process, the first data being associated with the first HARQ process and the second data being associated with the second HARQ. With reference to the first aspect, in some implementations, the N HARQ processes include a first HARQ process and a second HARQ process, and the Q1 data further includes third data, the first data being associated with the first HARQ process, the second data being associated with the second HARQ process, the third data being associated with the first HARQ process or the second HARQ process. In combination with the first aspect, in some implementations, before the first information is received on the first carrier, the method further includes sending second information, where the second information indicates a maximum number of HARQ processes supported by the terminal device in one time unit, or indicates a maximum number of concurrent HARQ processes supported b