US-12628131-B2 - Resource selection method and device

US12628131B2US 12628131 B2US12628131 B2US 12628131B2US-12628131-B2

Abstract

A resource selection method and a device are provided. The method is performed by a user equipment. The method comprises determining a first resource set. The first resource set is a subset of a second resource set. The method further comprises selecting a target resource according to the first resource set.

Inventors

Zichao JI
Shuyan PENG

Assignees

VIVO MOBILE COMMUNICATION CO., LTD.

Dates

Publication Date: 20260512
Application Date: 20220928
Priority Date: 20200330

Claims (18)

1 . A resource selection method, performed by a user equipment, comprising: selecting a first resource set from a second resource set; and selecting a target resource according to the first resource set, wherein selecting the target resource according to the first resource set comprises: determining a resource selection window, determining a third resource set according to the first resource set and the resource selection window, and selecting the target resource from the third resource set.
2 . The resource selection method according to claim 1 , wherein the first resource set is a subset of the second resource set divided based on at least one of the following parameters: a subset size; a start position; a target quantity; or a period.
3 . The resource selection method according to claim 2 , wherein the at least one parameter is specified in a protocol, or pre-configured, or configured by a control node, or indicated by a control node, or determined based on a first preset policy.
4 . The resource selection method according to claim 3 , wherein the first preset policy comprises at least one of the following content items: group information of the user equipment; a quantity of sidelink radio resource control connections of the user equipment; or a size of to-be-transmitted data of the user equipment.
5 . The resource selection method according to claim 1 , wherein each subset of the second resource set has a corresponding index number.
6 . The resource selection method according to claim 5 , wherein a quantity of the index numbers is equal to a quantity of the subsets of the second resource set; or the quantity of the index numbers is specified in a protocol, or pre-configured, or configured by a control node, or indicated by a control node, or determined based on a second preset policy.
7 . The resource selection method according to claim 6 , wherein the second preset policy comprises at least one of the following content items: group information of the user equipment; or the quantity of the subsets of the second resource set.
8 . The resource selection method according to claim 1 , wherein selecting the first resource set from the second resource set based on at least one piece of the following information: an in-group identity (ID) of the user equipment; a source ID of the user equipment; a destination user equipment ID; time information; a sidelink network ID; geographic location information; or a resource pool ID.
9 . The resource selection method according to claim 1 , wherein after the selecting a target resource according to the first resource set, the method further comprises: sending data on the target resource according to a power control parameter corresponding to the first resource set.
10 . A user equipment, comprising a memory having a computer program stored thereon; and a processor, wherein the computer program, when executed by the processor, causes the processor to perform a resource selection method, comprising: selecting a first resource set from a second resource set; and selecting a target resource according to the first resource set, wherein selecting the target resource according to the first resource set comprises: determining a resource selection window, determining a third resource set according to the first resource set and the resource selection window, and selecting the target resource from the third resource set.
11 . The user equipment according to claim 10 , wherein the first resource set is a subset of the second resource set divided based on at least one of the following parameters: a subset size; a start position; a target quantity; or a period.
12 . The user equipment according to claim 11 , wherein the at least one parameter is specified in a protocol, or pre-configured, or configured by a control node, or indicated by a control node, or determined based on a first preset policy.
13 . The user equipment according to claim 12 , wherein the first preset policy comprises at least one of the following content items: group information of the user equipment; a quantity of sidelink radio resource control connections of the user equipment; or a size of to-be-transmitted data of the user equipment.
14 . The user equipment according to claim 10 , wherein each subset of the second resource set has a corresponding index number.
15 . The user equipment according to claim 14 , wherein a quantity of the index numbers is equal to a quantity of the subsets of the second resource set; or the quantity of the index numbers is specified in a protocol, or pre-configured, or configured by a control node, or indicated by a control node, or determined based on a second preset policy.
16 . The user equipment according to claim 15 , wherein the second preset policy comprises at least one of the following content items: group information of the user equipment; or the quantity of the subsets of the second resource set.
17 . The user equipment according to claim 10 , wherein selecting the first resource set from the second resource set based on at least one piece of the following information: an in-group identity (ID) of the user equipment; a source ID of the user equipment; a destination user equipment ID; time information; a sidelink network identity (ID); geographic location information; or a resource pool ID.
18 . A non-transitory computer-readable storage medium, storing a computer program, wherein the computer program, when executed by a processor, causes the processor to perform a resource selection method, comprising: selecting a first resource set from a second resource set; and selecting a target resource according to the first resource set, wherein selecting the target resource according to the first resource set comprises: determining a resource selection window, determining a third resource set according to the first resource set and the resource selection window, and selecting the target resource from the third resource set.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of International Application No. PCT/CN2021/083892, filed on Mar. 30, 2021, which claims priority to Chinese Patent Application No. 202010238961.1, filed on Mar. 30, 2020. The entire contents of each of the above-referenced applications are expressly incorporated herein by reference. TECHNICAL FIELD The present disclosure relates to the technical field of communications, and in particular, to a resource selection method and device. BACKGROUND In the New Radio (NR) technology, there are two NR sidelink (SL) resource allocation modes. One is based on base station scheduling (mode 1), and the other is based on autonomous resource selection of a user equipment (UE) (mode 2). In the resource allocation mode based on the base station scheduling, a sidelink resource used by the UE for data transmission is determined by a base station, and a transmitter (Tx) UE is notified through downlink signaling. In the resource allocation mode based on autonomous selection of a UE, the UE selects an available transmission resource in a (pre-) configured resource pool. The UE first performs channel monitoring before selecting a resource, then selects a resource set with less interference according to a channel monitoring result, and subsequently selects a resource for transmission from the resource set randomly. However, in a solution based on the autonomous resource selection of the UE, for groupcast communication of a sidelink, that is, transmission of information from one UE to other in-group UEs, when sending information, the UE cannot receive information sent by other in-group UEs, which generally causes relatively low reliability of a transmission resource. SUMMARY According to a first aspect, the embodiments of the present disclosure provide a resource selection method, which is applied to the user equipment, and includes: determining a first resource set, where the first resource set is a subset of a second resource set; andselecting a target resource according to the first resource set. According to a second aspect, the embodiments of the present disclosure further provide a user equipment, including: a determining module, configured to determine a first resource set, where the first resource set is a subset of a second resource set; anda processing module, configured to select a target resource according to the first resource set. According to a third aspect, the embodiments of the present disclosure further provide a user equipment, including a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the foregoing resource selection method. According to a fourth aspect, the embodiments of the present disclosure further provide a computer-readable storage medium, storing a computer program, where the computer program, when executed by a processor, implements the steps of the foregoing resource selection method. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic flowchart of a resource selection method according to an embodiment of the present disclosure; FIG. 2 is an application diagram 1 of a resource selection method according to an embodiment of the present disclosure; FIG. 3 is an application diagram 2 of a resource selection method according to an embodiment of the present disclosure; FIG. 4 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure; and FIG. 5 is a schematic structural diagram of a user equipment according to another embodiment of the present disclosure. DETAILED DESCRIPTION Detailed description is made below with reference to the accompanying drawings and specific embodiments. For ease of description, the symbol ‘/’ below is equivalent to or. The method in the embodiments of the present disclosure is applied to a user equipment. The UE may refer to an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile console, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communications device, a user agent, or a user apparatus. A terminal device may further be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having a wireless communication function, a computer device, another processing device connected to a wireless modem, in-vehicle device, or a wearable device. As shown in FIG. 1, a resource selection method provided by the embodiments of the present disclosure is applied to the user equipment, and includes the following steps: Step 101. Determine a first resource set, where the first resource set is a subset of a second resource set. In some embodiments, the second resource set is a resource set that is specified in a protocol, or pre-configured, or configure