CN-122029769-A - Unlicensed transmission activation method and device

Abstract

The application provides a method and a device for activating unlicensed transmission, wherein when a retransmission scheduling DCI is used for activating unlicensed transmission at the same time, a terminal can determine an application mode of applying a first parameter based on the retransmission scheduling DCI, and determine that the application mode is consistent with an application mode of applying the first parameter by network equipment. The network device and the terminal have consistency in the application of the first parameter used, so that retransmission failure and/or unlicensed transmission failure of the physical uplink shared channel PUSCH can be avoided.

Inventors

• XU XIUQIANG
• WANG FAN
• CHEN YAN

Assignees

• 华为技术有限公司

Dates

Publication Date

20260512

Application Date

20230921

Claims (19)

1. An unlicensed transmission activation method, comprising: receiving retransmission scheduling Downlink Control Information (DCI) which is used for activating unlicensed transmission; Determining an application mode of a first parameter based on the retransmission scheduling DCI, wherein the first parameter comprises a configuration parameter of unlicensed transmission and/or a configuration parameter of dynamic licensed transmission; And applying the first parameter based on the application mode.
2. The method according to claim 1, wherein the resource used for receiving the retransmission scheduling DCI has a first correspondence with an application mode of the first parameter; The determining, based on the retransmission scheduling DCI, an application manner of the first parameter includes: And determining an application mode of the first parameter based on the resources used by the retransmission scheduling DCI and the first corresponding relation.
3. The method of claim 2, wherein the first correspondence includes one or more of: Receiving a corresponding relation between a Radio Network Temporary Identifier (RNTI) used by the retransmission scheduling (DCI) and an application mode of a first parameter; receiving a corresponding relation between a DCI format used by the retransmission scheduling DCI and an application mode of a first parameter; Receiving a corresponding relation between time domain resources used by the retransmission scheduling DCI and an application mode of a first parameter; And receiving the corresponding relation between the frequency domain resource used by the retransmission scheduling DCI and the application mode of the first parameter.
4. The method of claim 1, wherein determining an application manner of the first parameter based on the retransmission scheduling DCI comprises: And determining an application mode of the first parameter based on part or all information bits of a designated field in the retransmission scheduling DCI, wherein the designated field comprises a Modulation Coding Scheme (MCS) field and a Redundancy Version (RV) field, and the new data indicates one or more items in an NDI field.
5. The method according to any one of claims 1 to 4, wherein the application of the first parameter comprises one or more of the following: At least one first configuration parameter exists, and when the network equipment configures the first configuration parameter for the dynamic authorization transmission and the unauthorized transmission of the terminal at the same time, the configuration of the first configuration parameter in the dynamic authorization transmission is applied; and when the network equipment configures the second configuration parameters for the dynamic authorized transmission and the unauthorized transmission of the terminal at the same time, the configuration of the second configuration parameters in the unauthorized transmission is applied.
6. The method according to any one of claims 1 to 5, wherein said applying said first parameter based on said application means comprises one or more of the following: Determining the length of the domain corresponding to the retransmission scheduling DCI based on the first parameter; retransmitting based on the first parameter; And based on the first parameter, performing unlicensed transmission.
7. The method according to any of claims 1 to 6, wherein the retransmission scheduling DCI is DCI for scheduling a retransmission for an initial unlicensed transmission.
8. The method according to any one of claims 1 to 6, wherein the unlicensed transmission comprises one or more of a configured grant transmission CG, a semi-persistent scheduling SPS, a transmission based on pre-configured uplink resources PUR, a small data transmission CG-SDT in a configured grant transmission.
9. An unlicensed transmission activation method, comprising: Determining an application mode of a first parameter, wherein the first parameter comprises a configuration parameter of unlicensed transmission and/or a configuration parameter of dynamic licensed transmission; determining retransmission scheduling Downlink Control Information (DCI) which is used for activating unlicensed transmission and is associated with an application mode of the first parameter; And sending the retransmission scheduling DCI.
10. The method according to claim 9, characterized in that part or all of the information bits of a specified field in the retransmission scheduling DCI are used to indicate the way in which the first parameter is applied, the specified field comprising a modulation and coding scheme, MCS, field, a redundancy version, RV, field, the new data being indicative of one or more of the NDI fields.
11. The method according to claim 9 or 10, wherein the application of the first parameter comprises one or more of the following: At least one first configuration parameter exists, and when the network equipment configures the first configuration parameter for the dynamic authorization transmission and the unauthorized transmission of the terminal at the same time, the configuration of the first configuration parameter in the dynamic authorization transmission is applied; and when the network equipment configures the second configuration parameters for the dynamic authorized transmission and the unauthorized transmission of the terminal at the same time, the configuration of the second configuration parameters in the unauthorized transmission is applied.
12. The method according to claim 9 or 10, characterized in that the retransmission scheduling DCI is DCI for scheduling a retransmission for an initial unlicensed transmission.
13. The method according to any of the claims 9 to 12, characterized in that the unlicensed transmission comprises one or more of a configured grant transmission CG, a semi-persistent scheduling SPS, a transmission based on pre-configured uplink resources PUR, a small data transmission CG-SDT in a configured grant transmission.
14. A communication device comprising a communication unit and a processing unit for performing the method of any of claims 1 to 13.
15. A communication device comprising a processor and a memory for storing instructions which, when executed by the processor, cause the communication device to perform the method of any one of claims 1 to 13.
16. A computer readable storage medium having instructions stored thereon which, when run on a computer, cause the computer to perform the method of any of claims 1 to 13.
17. A computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1 to 13.
18. A chip, characterized in that the chip comprises a processor or the chip comprises a processor and an interface, the processor being adapted to execute a computer program such that the chip implements the method according to any of claims 1 to 13.
19. A chip system comprising a processor and an interface, the processor being configured to execute a computer program such that the chip system implements the method of any one of claims 1 to 13.

Description

Unlicensed transmission activation method and device Technical Field The present application relates to the field of communications technologies, and in particular, to a method and apparatus for activating unlicensed transmission. Background In order to perform dynamic grant based transmission or grant-free (transmission without DYNAMIC GRANT/scheduling) transmission, the base station needs to configure a series of higher layer parameters (such as transmission mode, power control, time-frequency domain resource allocation mode, etc.) for the terminal. For example, the base station will typically configure higher layer parameters for dynamic grant transmission and unlicensed transmission, respectively. In order to ensure the reliability of unlicensed transmission, the base station may issue retransmission scheduling downlink control information (downlink control information, DCI) to enable the terminal to retransmit a Physical Uplink Shared Channel (PUSCH) SHARED CHANNAL or receive a physical downlink shared channel (physical downlink SHARED CHANNAL, PDSCH) for retransmission. When the retransmission scheduling DCI is simultaneously used to activate unlicensed transmission, how to avoid retransmission failure of a Physical Uplink Shared Channel (PUSCH) SHARED CHANNAL and/or unlicensed transmission failure becomes a problem to be solved. Disclosure of Invention The application provides an unauthorized transmission activation method and device, which can distinguish and multiplex multiple layers of data streams processed by the same neural network. In a first aspect, the present application provides a method for unlicensed transmission activation, which is performed by a first device. The first device may be a terminal, a component of the terminal (such as a processor, a chip, or a chip system, or the like), or a logic module capable of implementing all or part of the functions of the terminal. The first device receives a retransmission scheduling downlink control information DCI for activating unlicensed transmission. The first device determines an application mode of a first parameter based on retransmission scheduling DCI, wherein the first parameter comprises configuration parameters of unlicensed transmission and/or configuration parameters of dynamic licensed transmission. The first device applies the first parameter based on the application. In the method, when the retransmission scheduling DCI is used for activating unlicensed transmission at the same time, the terminal may determine an application manner of applying the first parameter based on the retransmission scheduling DCI, and determine that the application manner is consistent with an application manner of applying the first parameter by the base station. The base station and the terminal have consistency to the application of the first parameter, and the retransmission failure and/or the unlicensed transmission failure of the physical uplink shared channel PUSCH can be avoided. In a possible implementation manner, a first correspondence exists between a resource used for receiving the retransmission scheduling DCI and an application manner of the first parameter. The first device determines an application mode of the first parameter based on the resource used by the retransmission scheduling DCI and the first correspondence. In a possible implementation manner, the first corresponding relation comprises one or more of a corresponding relation of a Radio Network Temporary Identifier (RNTI) used for receiving retransmission scheduling (DCI) and an application mode of a first parameter, a corresponding relation of a DCI format used for receiving retransmission scheduling (DCI) and the application mode of the first parameter, a corresponding relation of a time domain resource used for receiving retransmission scheduling (DCI) and the application mode of the first parameter, and a corresponding relation of a frequency domain resource used for receiving retransmission scheduling (DCI) and the application mode of the first parameter. In the above method, the terminal and the base station may preset a first correspondence, so that when the terminal receives the retransmission scheduling DCI, an application manner of the first parameter (corresponding to an application manner of implicitly indicating the first parameter) may be determined based on related parameters (such as a scrambled RNTI, a DCI format, a time-frequency domain resource, etc.) for receiving the retransmission scheduling DCI, and the application manner is consistent with an application manner of the base station applying the first parameter. The base station and the terminal have consistency to the application of the first parameter, and the retransmission failure and/or the unlicensed transmission failure of the physical uplink shared channel PUSCH can be avoided. In one possible implementation, the first apparatus determines an application mode of the first parameter based on some o