CN-122001535-A - Communication method and device

Abstract

The application provides a communication method and a communication device. The method comprises the steps of receiving first information on a first carrier, wherein the first information is used for scheduling M transmission units 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 M transmission units, N is an integer greater than or equal to 2, M is a positive integer greater than or equal to N, and the M transmission units are sent or received on the first carrier and in the first time unit. This is advantageous in reducing the possibility of transmission opportunity collisions between transmission units to be transmitted by the first communication device under low latency constraints.

Inventors

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

Assignees

• 华为技术有限公司

Dates

Publication Date

20260508

Application Date

20241108

Claims (20)

1. 1. A method of communication, comprising: Receiving first information on a first carrier, wherein the first information is used for scheduling M transmission units 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 M transmission units, N is an integer greater than or equal to 2, and M is a positive integer greater than or equal to N; the M transmission units are sent or received at the first carrier and at the first time unit.
2. 2. The method of claim 1, wherein the N HARQ processes satisfy at least one of: only the transmission units associated with one HARQ process in the N HARQ processes are the transmission units of new transmission, or, And at least one transmission unit in the transmission units associated with at least one HARQ process in the N HARQ processes is a retransmission transmission unit.
3. 3. The method of claim 2, wherein at least one of the transmission units associated with at least one of the N HARQ processes is a retransmitted transmission unit, comprising: And at least one transmission unit in the transmission units associated with each HARQ process in the N HARQ processes is a retransmitted transmission unit.
4. 4. A method according to any of claims 1 to 3, wherein the first time unit is a minimum time domain unit for sending or receiving a transmission unit.
5. 5. The method according to any one of claim 1 to 4, The frequency domain resources corresponding to at least two of the M transmission units are different, and/or, And the transmission layers corresponding to at least two transmission units in the M transmission units are different.
6. 6. The method according to any of claims 1 to 5, wherein the M transmission units correspond to M modulation and coding strategies, MCSs.
7. 7. The method of any of claims 1 to 6, wherein the N HARQ processes comprise a first HARQ process, the first HARQ process being associated with one or more transmission units.
8. 8. The method of any of claims 1 to 7, wherein the N HARQ processes comprise a second HARQ process, the second HARQ process associated with M1 transmission units, the M1 transmission units belonging to the M transmission units, the M1 transmission units comprising a first transmission unit, M1 being an integer greater than or equal to 1, and M1 being less than M; And under the condition that the value of the configuration parameter corresponding to the first transmission unit is a first preset value, the first transmission unit is deactivated.
9. 9. The method according to any of claims 1 to 8, wherein the N HARQ processes comprise a third HARQ process, the third HARQ process being associated with M2 transmission units, the M2 transmission units belonging to the M transmission units, M2 being an integer greater than or equal to 1, and M2 being less than M; And under the condition that the value of the configuration parameter corresponding to each transmission unit in the M2 transmission units is a second preset value, the M2 transmission units are deactivated, and the third HARQ process is deactivated.
10. 10. The method according to any one of claim 1 to 9, wherein, The first information is carried in one piece of downlink control information DCI or, The first information is carried in N pieces of DCI, and the N pieces of DCI are in one-to-one correspondence with the N HARQ processes.
11. 11. The method of claim 10, wherein when the first information is carried in N DCIs, the N DCIs satisfy: the time domain resources carrying the N DCIs are the same, the N DCIs comprise first DCIs and second DCIs, the interval between the first frequency domain resources and the second frequency domain resources is K frequency domain units, the first frequency domain resources are frequency domain resources carrying the first DCIs, the second frequency domain resources are frequency domain resources carrying the second DCIs, K is an integer larger than or equal to 0, and K is predefined, configured or preconfigured.
12. 12. The method of claim 10 or 11, wherein when the first information is carried in N DCIs, a size of the DCIs is used to determine a value of N.
13. 13. The method according to any of claims 1 to 12, wherein the N HARQ processes are two HARQ processes, the two HARQ processes comprising a fourth HARQ process and a fifth HARQ process; the transmission units associated with the fourth HARQ process are all newly transmitted transmission units, and at least one transmission unit in the transmission units associated with the fifth HARQ process is a retransmitted transmission unit, or, At least one transmission unit in the transmission units associated with the fourth HARQ process is a retransmission transmission unit, and at least one transmission unit in the transmission units associated with the fifth HARQ process is a retransmission transmission unit.
14. 14. A method of communication, comprising: Transmitting first information on a first carrier, wherein the first information is used for scheduling M transmission units 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 M transmission units, N is an integer greater than or equal to 2, and M is a positive integer greater than or equal to N; the M transmission units are received or transmitted at the first carrier and at the first time unit.
15. 15. The method of claim 14, wherein the N HARQ processes satisfy at least one of: only the transmission units associated with one HARQ process in the N HARQ processes are the transmission units of new transmission, or, And at least one transmission unit in the transmission units associated with at least one HARQ process in the N HARQ processes is a retransmission transmission unit.
16. 16. The method of claim 15, wherein at least one of the transmission units associated with at least one of the N HARQ processes is a retransmitted transmission unit, comprising: And at least one transmission unit in the transmission units associated with each HARQ process in the N HARQ processes is a retransmitted transmission unit.
17. 17. The method according to any of claims 14 to 16, wherein the first time unit is a minimum time domain unit for sending or receiving a transmission unit.
18. 18. The method according to any one of claim 14 to 17, wherein, The frequency domain resources corresponding to at least two of the M transmission units are different, and/or, And the transmission layers corresponding to at least two transmission units in the M transmission units are different.
19. 19. The method according to any of claims 14 to 18, wherein the M transmission units correspond to M modulation and coding strategies, MCSs.
20. 20. The method of any of claims 14 to 19, wherein the N HARQ processes comprise a first HARQ process, the first HARQ process being associated with one or more transmission units.

Description

Communication method and device Technical Field The present application relates to the field of communications, and in particular, to a communication method and apparatus in the field of communications. Background The hybrid automatic repeat request (hybrid automatic repeat reqquest, HARQ) mechanism is a retransmission mechanism combining forward error correction (forward error correction, FEC) and automatic repeat request (automatic repeat reqquest, ARQ). In the HARQ mechanism, a sender can utilize an FEC algorithm to encode, redundant information with error detection and correction capability is added in the transmitted information, a receiver utilizes a corresponding reverse algorithm to decode the received information, if errors exist, the error correction is carried out, the success of the information transmission is indicated when the error correction is successful, and the receiver notifies the sender of retransmission when the error correction is failed. If there is still an error and the error correction is not successful, re-requesting the retransmission again until the reception is successful or the maximum number of retransmissions is exceeded. In the HARQ mechanism, parallel processing is allowed with a plurality of stop-and-wait processes. Illustratively, the sender may send information using one HARQ process (process) that the sender may continue to send information using another HARQ process while waiting for an acknowledgement, and similarly the receiver may continue to receive information using another HARQ process while processing information received by one HARQ process. Currently, when the transmission layer is smaller than 4, the network device can only schedule one transmission unit on one time unit, and the transmission unit is associated with one HARQ process, however, under the low latency constraint, there may be transmission opportunity conflicts between multiple units to be transmitted of the terminal device. Disclosure of Invention The application provides a communication method and a communication device, aiming at reducing the possibility of transmission opportunity conflict among a plurality of units to be transmitted of terminal equipment under the constraint of low time delay. In a first aspect, the present application provides a communication method, which may be performed by a first communication device. The first communication device may be a terminal, or may be 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 including a modem core) applicable to the terminal, which is not limited in this aspect of the present application. The method includes receiving first information on a first carrier, the first information being used for scheduling M transmission units on a first time unit, the first information including first indication information indicating N HARQ processes associated with the M transmission units, N being an integer greater than or equal to 2, M being a positive integer greater than or equal to N, and transmitting or receiving the M transmission units on the first carrier and on the first time unit. The first information is used for scheduling M transmission units in the first time unit, or alternatively, the first information is used for scheduling M transmission units in the first time unit. In the above technical solution, the second communication device may schedule multiple transmission units on a single time unit, which is beneficial to reduce the possibility of transmission opportunity collision between the units to be transmitted of the first communication device, such as reducing the possibility of transmission opportunity collision between the newly transmitted transmission unit and the retransmitted transmission unit, under the low latency constraint. And, the plurality of transmission units associate a plurality of HARQ processes that are independent of each other, which is advantageous in reducing the possibility of transmission opportunity collisions between transmission units associated with different HARQ processes. Alternatively, the above-mentioned transmission unit may refer to a basic unit (or a minimum unit) of data transmission. Illustratively, the transmission units include, but are not limited to, for example, transport blocks (transmission block, TB), physical downlink shared channels (physical downlink SHARED CHANNEL, PDSCH), sub-transport blocks (Sub transport block, sub-TB), codewords (CW), code Block Groups (CBG), physical Uplink SHARED CHANNEL (PUSCH), physical sidelong shared channels (PHYSICAL SIDELINK SHARED CHANNEL, PSSCH), or code block clusters (code block cluster, CBC), etc., which are not limiting to the application. With reference to the first aspect, in some possible implementation manners of the first aspect, the N HARQ processes satisfy at least one of a transmission unit that is associated with