EP-4738943-A2 - METHOD, APPARATUS, AND NON-TRANSITORY COMPUTER PROGRAM PRODUCT FOR CONFIGURING SIDELINK DRX

Abstract

The present disclosure describes methods, system, and devices for configuring a sidelink discontinuous reception (DRX). One method includes determining, by a first user equipment (UE), whether a reporting condition is satisfied; and in response to determining that the reporting condition is satisfied, sending, by the first UE, a DRX configuration information of the first UE to the network. In one implementation, the first UE may be a receiving (RX) UE. Another method includes obtaining, by the first UE, a list of DRX configurations; determining, by the first UE, at least one DRX configuration from the list of DRX configurations; and monitoring, by the first UE, a PC5 message according to the at least one DRX configuration.

Inventors

• LUO, WEI
• CHEN, LIN
• DU, Weiqiang

Assignees

• ZTE Corporation

Dates

Publication Date

20260506

Application Date

20210508

Claims (12)

1. A method for wireless communication, comprising: configuring, by a first user equipment, UE, a discontinuous reception, DRX, by: determining, by the first UE, whether a second UE supports a DRX capability based on a destination ID; and in response to determining that the second UE supports the DRX capability, determining, by the first UE, to activate a DRX function.
2. The method according to claim 1, wherein: the destination ID comprises a destination layer 2, L2, ID.
3. The method according to claim 1, wherein determining, by the first UE, whether the second UE supports the DRX capability comprises: determining, by the first UE, whether the second UE supports the DRX capability based on a group message from an upper layer to an access stratum, AS, layer.
4. The method according to claim 3, wherein: the upper layer comprises a non-access stratum, NAS, layer.
5. An apparatus comprising: a memory storing instructions; and a processor in communication with the memory, wherein, when the processor executes the instructions, the processor is configured to cause the apparatus to perform configuring a discontinuous reception, DRX, by: determining whether a second user equipment, UE, supports a DRX capability based on a destination ID; and in response to determining that the second UE supports the DRX capability, determining to activate a DRX function.
6. The apparatus according to claim 5, wherein: the destination ID comprises a destination layer 2, L2, ID.
7. The apparatus according to claim 5, wherein determining whether the second UE supports the DRX capability comprises: determining whether the second UE supports the DRX capability based on a group message from an upper layer to an access stratum, AS, layer.
8. The apparatus according to claim 7, wherein: the upper layer comprises a non-access stratum, NAS, layer.
9. A non-transitory computer program product comprising a computer-readable program medium storing instructions, wherein, the instructions, when executed by a processor in an apparatus, are configured to cause the processor to perform configuring a discontinuous reception, DRX, by: determining whether a second user equipment, UE, supports a DRX capability based on a destination ID; and in response to determining that the second UE supports the DRX capability, determining to activate a DRX function.
10. The non-transitory computer program product according to claim 9, wherein the destination ID comprises a destination layer 2, L2, ID.
11. The non-transitory computer program product according to claim 9, wherein determining whether the second UE supports the DRX capability comprises: determining whether the second UE supports the DRX capability based on a group message from an upper layer to an access stratum, AS, layer.
12. The non-transitory computer program product according to claim 11, wherein: the upper layer comprises a non-access stratum, NAS, layer.

Description

TECHNICAL FIELD The present disclosure is directed generally to wireless communications. Particularly, the present disclosure relates to methods, devices, and systems for configuring a sidelink discontinuous reception (DRX). BACKGROUND User equipments (UEs) in a wireless network may communicate data with one another via direct sidelink (SL) communication channels without the data being relayed by any wireless access network nodes. In some application scenarios of sidelink communications such as those involving vehicular wireless network devices, communication resource allocation and configuration for one communication terminal may involve another communication terminal in addition to a base station. It is critical to provide a resource allocation, provisioning, and release mechanism to enable low-power and efficient use of sidelink communication resources. There are various problems/issues with the sidelink communication. The present disclosure describes various embodiments for configuring a sidelink discontinuous reception (DRX), addressing one or more problems/issues and improving the efficiency of the sidelink DRX mechanism. SUMMARY This document relates to methods, systems, and devices for wireless communication, and more specifically, for configuring a sidelink discontinuous reception (DRX). In one embodiment, the present disclosure describes a method for wireless communication. The method includes configuring a sidelink discontinuous reception (DRX) by: determining, by a first user equipment (UE), whether a reporting condition is satisfied; and in response to determining that the reporting condition is satisfied, sending, by the first UE, a DRX configuration information of the first UE to the network. In one implementation, the first UE may be a receiving (RX) UE. In another embodiment, the present disclosure describes a method for wireless communication. The method includes configuring, by a first user equipment (UE), a sidelink discontinuous reception (DRX) by: obtaining, by the first UE, a list of DRX configurations; determining, by the first UE, at least one DRX configuration from the list of DRX configurations; and monitoring, by the first UE, a PC5 message according to the at least one DRX configuration. In another embodiment, the present disclosure describes a method for wireless communication. The method includes configuring, by a first user equipment (UE), a sidelink discontinuous reception (DRX) by: determining, by the first UE, whether a second UE supports a DRX capability; and in response to determining that the second UE supports the DRX capability, determining, by the first UE, whether to activate the DRX function. In one implementation, the second UE may be a receiving (TX) UE. In another embodiment, the present disclosure describes a method for wireless communication. The method includes configuring a sidelink discontinuous reception (DRX) by: receiving, by a user equipment (UE), a sidelink transmission or reception resource pool information from a network, or preconfiguring the sidelink transmission or reception resource pool information, wherein the sidelink transmission or reception resource pool information comprises an indication information indicating at least one of the following: whether a sidelink DRX capable UE can use a sidelink resource pool; whether a sidelink DRX non-capable UE can use the sidelink resource pool; that only the sidelink DRX capable UE can use the sidelink resource pool; or that only the sidelink DRX non-capable UE can use the sidelink resource pool. In another embodiment, the present disclosure describes a method for wireless communication. The method includes configuring a sidelink discontinuous reception (DRX) by: determining, by a first user equipment (UE), whether the first UE is an in-coverage (IC) UE; and in response to determining the first UE is the in-coverage (IC) UE, configuring, by the first UE, at least one DRX configuration for a groupcast mode or a broadcast mode, wherein the at least one DRX configuration includes all DRX configurations received from a serving cell, received from a non-serving cell, and pre-configured. In some other embodiments, an apparatus for wireless communication may include a memory storing instructions and a processing circuitry in communication with the memory. When the processing circuitry executes the instructions, the processing circuitry is configured to carry out the above methods. In some other embodiments, a device for wireless communication may include a memory storing instructions and a processing circuitry in communication with the memory. When the processing circuitry executes the instructions, the processing circuitry is configured to carry out the above methods. In some other embodiments, a computer-readable medium comprising instructions which, when executed by a computer, cause the computer to carry out the above methods. The above and other aspects and their implementations are described in greater d