EP-4738962-A1 - COMMUNICATION INDICATION METHOD, TERMINAL, AND ACCESS NETWORK DEVICE

Abstract

The present disclosure relates to a communication indication method, a terminal, and an access network device. The method comprises: acquiring an uplink (UL) subband configured by an access network device, and determining a frequency domain resource allocation (FDRA) field in downlink control information (DCI) used for scheduling a physical uplink shared channel (PUSCH) transmitted in the UL subband; and according to the FDRA field, determining a frequency domain resource used for uplink transmission the UL subband. Communication efficiency is effectively improved.

Inventors

• WANG, LEI

Assignees

• Beijing Xiaomi Mobile Software Co., Ltd.

Dates

Publication Date

20260506

Application Date

20230630

Claims (20)

1. A method for communication indication, comprising: determining an uplink (UL) subband; receiving downlink control information (DCI), wherein the DCI is configured to schedule a physical uplink shared channel (PUSCH) transmitted in the UL subband; and determining a UL frequency domain resource based on the DCI, wherein the UL frequency domain resource is a resource used for UL transmission in the UL subband.
2. The method according to claim 1, wherein the DCI comprises a frequency domain resource assignment (FDRA) field, and the FDRA field is configured to determine the UL frequency domain resource.
3. The method according to claim 2, wherein determining the UL frequency domain resource based on the DCI comprises: determining the UL frequency domain resource based on a bitmap in the FDRA field, wherein the UL frequency domain resource comprises a resource block group (RBG), and the bitmap indicates an RBG index corresponding to the RBG in the UL frequency domain resource.
4. The method according to claim 3, wherein determining the UL frequency domain resource based on the bitmap in the FDRA field comprises: mapping a most significant bit of the bitmap in the FDRA field to an RBG having a maximum RBG index in a UL bandwidth part (BWP), and sequentially mapping other bits of the bitmap to other RBGs; or mapping a most significant bit of the bitmap in the FDRA field to an RBG having a minimum RBG index in a UL BWP, and sequentially mapping other bits of the bitmap to other RBGs.
5. The method according to claim 3, wherein determining the UL frequency domain resource based on the bitmap in the FDRA field further comprises: mapping a most significant bit of the bitmap in the FDRA field to an RBG having a maximum RBG index in the UL subband, and sequentially mapping other bits of the bitmap to other RBGs; or mapping a most significant bit of the bitmap in the FDRA field to an RBG having a minimum RBG index in the UL subband, and sequentially mapping other bits of the bitmap to other RBGs.
6. The method according to any one of claims 3 to 5, wherein an RBG corresponding to a position encoded as 1 in the bitmap is used for the UL transmission.
7. The method according to any one of claims 3 to 6, wherein the bitmap indicates a first frequency domain resource, the first frequency domain resource comprises a first RBG, the first RBG is not located within a frequency domain range of the UL subband, and the first RBG does not belong to the UL frequency domain resource.
8. The method according to any one of claims 1 to 7, further comprising: determining an RBG index corresponding to an RBG in a UL BWP based on an active UL BWP; or determining an RBG index corresponding to an RBG in a UL BWP based on an initial UL BWP.
9. The method according to any one of claims 1 to 8, further comprising: determining a granularity of an RBG in a UL BWP based on a size of an active UL BWP; or determining a granularity of an RBG in a UL subband based on a size of an active UL BWP.
10. The method according to any one of claims 1 to 9, wherein a frequency domain resource allocation (RA) type for the UL transmission is a resource allocation type 0 (RA type 0).
11. The method according to any one of claims 1 to 10, wherein the DCI is any one of: DCI format 0-0; DCI format 0-1; DCI format 0-2; or DCI format 0-3.
12. A method for communication indication, comprising: configuring an uplink (UL) subband for a terminal; and sending downlink control information (DCI), wherein the DCI is configured to schedule a physical uplink shared channel (PUSCH) transmitted in the UL subband; the DCI indicates a UL frequency domain resource; and the UL frequency domain resource is a resource used for UL transmission in the UL subband.
13. The method according to claim 12, wherein the DCI comprises a frequency domain resource assignment (FDRA) field, and the FDRA field is configured to determine the UL frequency domain resource.
14. The method according to claim 13, wherein a bitmap in the FDRA field is configured to determine the UL frequency domain resource, the UL frequency domain resource comprises a resource block group (RBG), and the bitmap indicates an RBG index corresponding to the RBG in the UL frequency domain resource.
15. The method according to claim 14, wherein a mapping relationship between the bitmap in the FDRA field and the UL frequency domain resource comprises: mapping a most significant bit of the bitmap in the FDRA field to an RBG having a maximum RBG index in a UL bandwidth part (BWP), and sequentially mapping other bits of the bitmap to other RBGs; or mapping a most significant bit of the bitmap in the FDRA field to an RBG having a minimum RBG index in a UL BWP, and sequentially mapping other bits of the bitmap to other RBGs.
16. The method according to claim 14, wherein a mapping relationship between the bitmap in the FDRA field and the UL frequency domain resource further comprises: mapping a most significant bit of the bitmap in the FDRA field to an RBG having a maximum RBG index in the UL subband, and sequentially mapping other bits of the bitmap to other RBGs; or mapping a most significant bit of the bitmap in the FDRA field to an RBG having a minimum RBG index in the UL subband, and sequentially mapping other bits of the bitmap to other RBGs.
17. The method according to any one of claims 14 to 16, wherein an RBG corresponding to a position encoded as 1 in the bitmap is used for the UL transmission.
18. The method according to any one of claims 14 to 17, wherein the bitmap indicates a first frequency domain resource, the first frequency domain resource comprises a first RBG, the first RBG is not located within a frequency domain range of the UL subband, and the first RBG does not belong to the UL frequency domain resource.
19. The method according to any one of claims 12 to 18, wherein an RBG index corresponding to an RBG in a UL BWP is determined by an active UL BWP; or an RBG index corresponding to an RBG in a UL BWP is determined by an initial UL BWP.
20. The method according to any one of claims 12 to 19, further comprising: determining a granularity of an RBG in a UL BWP based on a size of an active UL BWP; or determining a granularity of an RBG in a UL subband based on a size of an active UL BWP.

Description

TECHNICAL FIELD The disclosure relates to the field of communication technologies, and in particular to a method for communication indication, a terminal, and an access network device. BACKGROUND A release 18 (Rel-18) full-duplex enhancement item may study full-duplex schemes. For example, a network side device may simultaneously perform data reception and transmission within one slot. Currently, 3GPP has determined that the Rel-18 full-duplex enhancement only targets a base station, while a terminal side device still only supports half-duplex, thus leading to reduced communication efficiency. SUMMARY For the problem of low communication efficiency in the related art, embodiments of the disclosure provide a method for communication indication, a terminal, and an access network device. According to a first aspect of embodiments of the disclosure, a method for communication indication is provided. The method includes: determining an uplink (UL) subband; receiving downlink control information (DCI), in which the DCI is configured to schedule a physical uplink shared channel (PUSCH) transmitted in the UL subband; and determining a UL frequency domain resource based on the DCI, in which the UL frequency domain resource is a resource used for UL transmission in the UL subband. By means of the solution of the disclosure, the communication efficiency may be improved. According to a second aspect of embodiments of the disclosure, a method for communication indication is provided. The method includes: configuring an UL subband for a terminal; and sending DCI, in which the DCI is configured to schedule a PUSCH transmitted in the UL subband; the DCI indicates a UL frequency domain resource; and the UL frequency domain resource is a resource used for UL transmission in the UL subband. According to a third aspect of embodiments of the disclosure, a method for communication indication is provided. The method includes: configuring, by a network device, an UL subband for a terminal; determining, by the terminal, the UL subband; sending, by the network device, DCI, in which the DCI is configured to schedule a PUSCH transmitted in the UL subband; and receiving, by the terminal, the DCI, and determining a UL frequency domain resource based on the DCI, in which the UL frequency domain resource is a resource used for UL transmission in the UL subband. According to a fourth aspect of embodiments of the disclosure, a terminal is provided. The terminal includes: one or more processors, in which the terminal is configured to implement the method in the first aspect. According to a fifth aspect of embodiments of the disclosure, an access network device is provided. The access network device includes: one or more processors, in which the access network device is configured to implement the method in the second aspect. According to a sixth aspect of embodiments of the disclosure, a communication system is provided. The communication system includes: a terminal and a network device, in which the terminal is configured to perform the method in the first aspect, and the network device is configured to perform the method in the second aspect. According to a seventh aspect of embodiments of the disclosure, a storage medium is provided. The storage medium stores instructions that, when executed on a communication device, cause the communication device to implement the method in any of the second aspect or the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate technical solutions in embodiments of the disclosure, the accompanying drawings required for describing embodiments are introduced below. The following accompanying drawings are merely some embodiments of the disclosure and do not specifically limit the scope of protection of the disclosure. FIG. 1A is a schematic diagram illustrating an architecture of a communication system according to an embodiment of the disclosure.FIG. 1B is a schematic diagram illustrating a frequency domain relationship between an uplink (UL) subband and a UL bandwidth part (BWP) configured by a base station according to a possible embodiment.FIG. 1C is a schematic diagram illustrating a frequency domain relationship between a UL subband and a UL BWP configured by a base station according to a possible embodiment.FIG. 2 is a schematic diagram illustrating an interaction of a method for communication indication according to an embodiment of the disclosure.FIG. 3A is a flowchart illustrating a method for communication indication according to an embodiment of the disclosure.FIG. 3B is a flowchart illustrating a method for communication indication according to an embodiment of the disclosure.FIG. 4A is a flowchart illustrating a method for communication indication according to an embodiment of the disclosure.FIG. 4B is a flowchart illustrating a method for communication indication according to an embodiment of the disclosure.FIG. 5 is a flowchart illustrating a method for communicat