CN114830803A

CN114830803A - Sidelink communication method and device

Info

Publication number: CN114830803A
Application number: CN201980103025.5A
Authority: CN
Inventors: 李翔宇; 王君; 徐海博; 戴明增
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2022-07-29
Anticipated expiration: 2039-12-26
Also published as: WO2021128218A1; CN114830803B

Abstract

A sidelink communication method and apparatus, wherein the method includes: after the first terminal device determines that the first QoS flow is remapped to the second SLRB, the SDAP entity of the first terminal device can stop sending the first QoS on the first SLRB flow data packets, and buffer the data packets of the first QoS flow in the SDAP buffer within a first preset time period after stopping sending the data packets of the first QoS flow on the first SLRB. After the duration, the buffered data packets of the first QoS flow are sent on the second SLRB. In this way, the data packets transmitted through the second SLRB can be made to arrive after the data packets transmitted through the first SLRB, thereby effectively ensuring that the SDAP layer on the receiving side can deliver the data packets of the first QoS flow to the upper layer in sequence.

Description

PCT国内申请，说明书已公开。PCT domestic application, the description has been published.

Claims

A method of sidelink communication, the method comprising:

the first terminal equipment sends data of a first quality of service (QoS) flow on a first Side Link Radio Bearer (SLRB);

the first terminal equipment acquires configuration information of a second SLRB, wherein the configuration information of the second SLRB indicates that the first QoS flow is remapped to the second SLRB;

the SDAP entity of the service data adaptation layer of the first terminal equipment stops sending the data packet of the first QoS flow on the first SLRB, and caches the data packet of the first QoS flow in an SDAP buffer area within a first preset time length after the sending of the data packet of the first QoS flow on the first SLRB is stopped;

and after the first preset time length, the first terminal equipment sends the data packet of the first QoS flow cached in the SDAP buffer area on the second SLRB.
The method of claim 1, wherein the service data adaptation layer (SDAP) entity of the first terminal device stopping sending packets of the first QoS flow on the first SLRB comprises:

after the first terminal device acquires the configuration information of the second SLRB, the SDAP entity of the first terminal device immediately stops sending the data packet of the first QoS flow on the first SLRB; or,

and after the first terminal equipment acquires the second preset time length after the configuration information of the second SLRB, the SDAP entity of the first terminal equipment stops sending the data packet of the first QoS flow on the first SLRB.
The method according to claim 1 or 2, characterized in that the method further comprises:

and the first terminal equipment establishes the second SLRB according to the configuration information of the second SLRB.
The method according to any one of claims 1 to 3, further comprising:

and the first terminal equipment releases the first SLRB after the first preset time length after stopping sending the data packet of the first QoS flow on the first SLRB.
A method of sidelink communication, the method comprising:

the second terminal equipment receives the data of the first quality of service QoS flow on a first side-link radio bearer SLRB;

the second terminal device receiving configuration information of a second SLRB from the first terminal device, the configuration information of the second SLRB indicating that the first QoS stream is remapped to the second SLRB;

the second terminal device caches the data packet received from the second SLRB in a service data adaptation layer SDAP buffer area within a third preset time length after receiving the configuration information of the second SLRB;

and after the third preset time, the SDAP entity of the second terminal equipment delivers the data packet received from the second SLRB and buffered in the SDAP buffer area to an upper layer for processing.
The method of claim 5, further comprising:

and the second terminal equipment establishes the second SLRB according to the configuration information of the second SLRB.
The method of claim 5 or 6, further comprising:

and after the third preset time, the second terminal equipment releases the first SLRB.
A method of sidelink communication, the method comprising:

the first terminal equipment sends data of a first quality of service (QoS) flow on a first side-link radio bearer (SLRB);

the first terminal equipment acquires configuration information of a second SLRB, and the configuration information of the second SLRB indicates that the first QoS flow is remapped to the second SLRB;

and the first terminal equipment releases the first SLRB after acquiring a fourth preset time length after the configuration information of the second SLRB.
The method of claim 8, further comprising:

and the first terminal equipment establishes the second SLRB according to the configuration information of the second SLRB.
The method according to claim 8 or 9, characterized in that the method further comprises:

and after the fourth preset time length, the SDAP entity of the service data adaptation layer of the first terminal equipment sends the data packet of the first QoS flow on the second SLRB.
A communications apparatus, the apparatus comprising:

a transceiving module, configured to send data of a first quality of service QoS flow on a first sidelink radio bearer SLRB;

the transceiver module is further configured to acquire configuration information of a second SLRB, where the configuration information of the second SLRB indicates that the first QoS stream is remapped to the second SLRB;

a processing module, configured to stop sending the data packet of the first QoS flow on the first SLRB, and buffer the data packet of the first QoS flow in an SDAP buffer within a first preset time period after the data packet of the first QoS flow is stopped being sent on the first SLRB;

the transceiver module is further configured to send, on the second SLRB, the data packet of the first QoS flow cached in the SDAP buffer after the first preset duration elapses.
The apparatus of claim 11, wherein the processing module is specifically configured to:

immediately stopping sending the data packet of the first QoS flow on the first SLRB after acquiring the configuration information of the second SLRB; or,

and after a second preset time length after the configuration information of the second SLRB is obtained, stopping sending the data packet of the first QoS flow on the first SLRB.
The apparatus of claim 11 or 12, wherein the processing module is further configured to:

and establishing the second SLRB according to the configuration information of the second SLRB.
The apparatus of any of claims 11 to 13, wherein the processing module is further configured to:

releasing the first SLRB after the first preset duration after stopping sending the data packet of the first QoS flow on the first SLRB.
A communications apparatus, the apparatus comprising:

a transceiving module, configured to receive data of a first quality of service QoS flow on a first sidelink radio bearer SLRB;

the transceiver module is further configured to receive configuration information of a second SLRB from a first terminal device, where the configuration information of the second SLRB indicates that the first QoS stream is remapped to the second SLRB;

the processing module is used for caching the data packet received from the second SLRB in a service data adaptation layer SDAP buffer area within a third preset time length after the configuration information of the second SLRB is received;

and the processing module is further configured to deliver the data packet received from the second SLRB and buffered in the SDAP buffer to an upper layer for processing after the third preset duration.
The apparatus of claim 15, wherein the processing module is further configured to:

and establishing the second SLRB according to the configuration information of the second SLRB.
The apparatus of claim 15 or 16, wherein the processing module is further configured to:

and releasing the first SLRB after the third preset time period.
A communications apparatus, the apparatus comprising:

a transceiving module, configured to send data of a first quality of service QoS flow on a first sidelink radio bearer SLRB;

the transceiver module is further configured to acquire configuration information of a second SLRB, where the configuration information of the second SLRB indicates that the first QoS stream is remapped to the second SLRB;

and the processing module is used for releasing the first SLRB after a fourth preset duration after the configuration information of the second SLRB is acquired.
The apparatus of claim 18, wherein the processing module is further configured to:

and establishing the second SLRB according to the configuration information of the second SLRB.
The apparatus of claim 18 or 19, wherein the processing module is further configured to:

and after the fourth preset time length, sending the data packet of the first QoS flow on the second SLRB.
An apparatus for communication, the apparatus comprising at least one processor coupled with at least one memory:

the at least one processor configured to execute computer programs or instructions stored in the at least one memory to cause the apparatus to perform the method of any one of claims 1 to 4, or to cause the apparatus to perform the method of any one of claims 5 to 7, or to cause the apparatus to perform the method of any one of claims 8 to 10.
A readable storage medium storing instructions that, when executed, cause the method of any one of claims 1 to 4 to be implemented, or cause the method of any one of claims 5 to 7 to be implemented, or cause the method of any one of claims 8 to 10 to be implemented.
A communication device comprising a processor and interface circuitry;

the interface circuit is used for receiving code instructions and transmitting the code instructions to the processor;

the processor is configured to execute the code instructions to perform the method of any one of claims 1 to 4, or the processor is configured to execute the code instructions to perform the method of any one of claims 5 to 7, or the processor is configured to execute the code instructions to perform the method of any one of claims 8 to 10.