CN-116527211-B - Communication method, user equipment and storage medium

Abstract

The disclosure relates to a communication method, user equipment and a storage medium. The communication method is performed by a first user equipment and comprises the steps of responding to the fact that reserved resources of a second user equipment for data transmission are about to collide, sending a pre-collision indication to the second user equipment, wherein the pre-collision indication is used for indicating that the reserved resources of the second user equipment are about to collide. The method and the device realize the indication of whether the reserved resources for data transmission have resource conflict or not.

Inventors

• ZHAO WENSU

Assignees

• 北京小米移动软件有限公司

Dates

Publication Date

20260508

Application Date

20210114

Claims (20)

1. 1. A communication method performed by a first user device, the communication method comprising: determining that reserved resources of second user equipment for data transmission are about to collide, and sending a pre-collision indication to the second user equipment, wherein the pre-collision indication is used for indicating that the reserved resources of the second user equipment are about to collide; the sending a pre-conflict indication to the second user equipment includes: transmitting a pre-conflict indication to the second user equipment by using a physical direct feedback channel PSFCH resource mapped by a first physical direct shared channel PSSCH transmission resource, wherein the first PSSCH is a PSSCH on a time slot where a first physical direct control channel PSCCH is located, the first PSCCH is used for indicating a reserved PSSCH resource, and the reserved PSSCH resource is about to generate resource conflict; and sending HARQ feedback through the time slot where the PSFCH resources are located.
2. 2. The communication method of claim 1, wherein the pre-collision indication is 1 bit.
3. 3. The communication method according to claim 1, wherein transmitting the HARQ feedback and the pre-collision indication comprises: And transmitting the HARQ feedback through PSFCH resources of a first frequency domain, and transmitting the pre-conflict indication through PSFCH resources of a second frequency domain.
4. 4. The communication method of claim 3, wherein PSFCH resources of the first frequency domain and PSFCH resources of the second frequency domain have the same time domain resources.
5. 5. The communication method according to claim 1, wherein a time interval between a time when a pre-conflict indication is sent to the second user equipment and a time when a resource conflict is imminent for the second user equipment is greater than or equal to a time interval threshold.
6. 6. The communication method of claim 1, wherein a time interval between the first PSSCH and the PSFCH is greater than or equal to a minimum time interval.
7. 7. The communication method of claim 5, wherein the time interval threshold is determined based on radio resource control, RRC, signaling.
8. 8. A communication method performed by a second user device, the communication method comprising: Receiving a pre-conflict indication sent by first user equipment, wherein the pre-conflict indication is used for indicating that reserved resources of second user equipment are about to generate resource conflict; performing resource reselection based on the pre-conflict indication; The receiving the pre-conflict indication sent by the first user equipment includes: Using physical direct-connection feedback channel PSFCH resources mapped by the PSSCH transmission resources of the first physical direct-connection shared channel to receive a pre-conflict indication sent by the first user equipment; the first PSSCH is a PSSCH on a time slot where a PSCCH of a first physical direct control channel is located, and the first PSCCH is a PSSCH resource used for indicating reservation; And receiving HARQ feedback through the time slot where the PSFCH resources are located.
9. 9. The communication method of claim 8, wherein the pre-collision indication is 1 bit.
10. 10. The communication method of claim 8, wherein receiving the HARQ feedback and the pre-collision indication comprises: And receiving the HARQ feedback through PSFCH resources of a first frequency domain, and receiving the pre-conflict indication through PSFCH resources of a second frequency domain.
11. 11. The communication method of claim 10, wherein PSFCH resources of the first frequency domain and PSFCH resources of the second frequency domain have the same time domain resources.
12. 12. The communication method of claim 8, wherein a time interval between a time when a pre-conflict indication is received and a time when a resource conflict is imminent for the second user device is greater than or equal to a time interval threshold.
13. 13. The method of communication of claim 8, wherein a time interval between the first PSSCH and the PSFCH is greater than or equal to a minimum time interval.
14. 14. The communication method according to claim 12, wherein the time interval threshold is determined based on radio resource control, RRC, signaling.
15. 15. A first user device, the first user device comprising: A processing unit configured to determine that a reserved resource of the second user equipment for data transmission is about to collide with a resource; a sending unit configured to send a pre-conflict indication to a second user equipment, where the pre-conflict indication is used to indicate that the reserved resource of the second user equipment is about to collide with a resource; The sending unit is configured to send a pre-conflict indication to the second user equipment by using a physical direct feedback channel PSFCH resource mapped by a first physical direct shared channel PSSCH transmission resource, wherein the first PSSCH is a PSSCH on a time slot where a first physical direct control channel PSCCH is located, the first PSCCH is used for indicating a reserved PSSCH resource, and the reserved PSSCH resource is about to generate resource conflict; the transmitting unit is configured to transmit hybrid automatic repeat request HARQ feedback over the time slot in which the PSFCH resources are located.
16. 16. The first user device of claim 15, wherein the pre-collision indication is 1 bit.
17. 17. The first user device of claim 15, wherein the transmitting unit transmits the HARQ feedback over PSFCH resources of a first frequency domain and the pre-collision indication over PSFCH resources of a second frequency domain.
18. 18. The first user device of claim 15, wherein a time interval between the first PSSCH and the PSFCH is greater than or equal to a minimum time interval.
19. 19. A second user device, the second user device comprising: A receiving unit configured to receive a pre-conflict indication sent by a first user equipment, where the pre-conflict indication is used to indicate that a reserved resource of a second user equipment is about to collide with the resource; a processing unit configured to perform resource reselection based on the pre-conflict indication; The receiving unit is configured to receive a pre-collision indication sent by a first user equipment by using a physical direct feedback channel PSFCH resource mapped by a first physical direct shared channel PSSCH transmission resource, wherein the first PSSCH is a PSSCH on a time slot where a first physical direct control channel PSCCH is located, the first PSCCH is used for indicating a reserved PSSCH resource, and the reserved PSSCH resource is about to generate resource collision; The receiving unit is configured to receive HARQ feedback through the timeslot where the PSFCH resources are located.
20. 20. The second user equipment of claim 19, wherein the pre-collision indication is 1 bit.

Description

Communication method, user equipment and storage medium The application is a divisional application, the application number of the original application is 202180000232.5, the application date is 2021, 01 and 14, and the application is named as a communication method, a communication device and a storage medium. Technical Field The disclosure relates to the field of communication technologies, and in particular, to a communication method, user equipment, and a storage medium. Background Since long term evolution (Long Term Evolution, LTE), third generation partnership (Third Generation Partnership,3 GPP) has been making the direct link (Sidelink) standard as a standard for terminal-to-terminal direct communications. The first standard for New wireless (NR) Sidelink has been completed in Rel-16, 7 months 2020, with NR SIDELINK solutions mainly used for vehicle-to-all (Vehicle to Everything, V2X) and public safety. For V2X and public safety, release16 does not fully support service requirements and operating schemes due to time constraints, and the service and system (SERVICE AND SYSTEM ASPECTS, SA) makes some enhancements at Release17 NR SIDELINK, such as architectural enhancements and system enhancements for 3GPP to support advanced V2X services. In addition, in the SA working group, other business cases related to NR SIDELINK, such as network-controlled interactive services, enhanced energy efficiency relays, wide coverage, audiovisual service production are being studied. Therefore, at the 86 th full meeting of 3GPP, in the stand of Release17, the enhancement of NR SIDELINK is taken as a work item, so as to enhance the reliability of Sidelink transmission and reduce the time delay. In the enhancement of NR SIDELINK, for the ue a in direct communication, an auxiliary message may be sent to the ue B in Mode2, where the ue B considers the selection of resources for its own data transmission. However, in the related art, the resources used by the ue B to transmit data may overlap with the resources reserved by other ues, and a situation that the resources of the second ue for data transmission are about to collide with each other may occur. Disclosure of Invention To overcome the problems in the related art, the present disclosure provides a communication method, a user equipment, and a storage medium. According to a first aspect of embodiments of the present disclosure, there is provided a communication method performed by a first user equipment, the communication method comprising, in response to determining that a reserved resource of a data transmission by a second user equipment is about to collide with the resource, sending a pre-collision indication to the second user equipment, the pre-collision indication being used for indicating that the reserved resource of the second user equipment is about to collide with the resource. In one embodiment, the sending a pre-conflict indication to the second user equipment includes: And transmitting a pre-conflict indication to the second user equipment by using a physical direct feedback channel PSFCH resource mapped by a first physical direct shared channel PSSCH transmission resource, wherein the first PSSCH is a PSSCH on a time slot where a first physical direct control channel PSCCH is located, the first PSCCH is used for indicating a reserved PSSCH resource, and the reserved PSSCH resource is about to generate resource conflict. In one embodiment, the pre-collision indication is 1 bit. In one embodiment, the communication method further includes sending hybrid automatic repeat request HARQ feedback through the timeslot where the PSFCH resources are located. In one embodiment, transmitting the HARQ feedback and the pre-collision indication includes transmitting the HARQ feedback over PSFCH resources of a first frequency domain and transmitting the pre-collision indication over PSFCH resources of a second frequency domain. In one embodiment, PSFCH resources of the first frequency domain and PSFCH resources of the second frequency domain have the same time domain resources. In one embodiment, a time interval between a time of sending a pre-conflict indication to the second user equipment and a time of impending resource conflict by the second user equipment is greater than or equal to a time interval threshold. In one embodiment, the time interval between the first PSSCH and PSFCH is greater than or equal to the minimum time interval. In one embodiment, the time interval threshold is determined based on radio resource control, RRC, signaling. According to a second aspect of the disclosed embodiments, a communication method is provided and executed by a second user equipment, and the communication method includes receiving a pre-conflict indication sent by the first user equipment, wherein the pre-conflict indication is used for indicating that reserved resources of the second user equipment are about to collide, and performing resource reselection based on the pr