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Method for sending sidelink retransmission request (BSR) and terminal equipment

A technology of retransmission request and sending method, which is applied in the field of communication, can solve the problems that affect the effectiveness of communication, terminal equipment cannot be determined, etc., and achieve the effect of improving communication effectiveness, improving resource utilization and communication system efficiency, and ensuring reliability

Pending Publication Date: 2020-05-05
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiment of the present invention is to provide a sidelink retransmission request BSR sending method and a terminal device to solve the problem that the terminal device cannot determine how to send the sidelink retransmission request BSR and other data information on the Uu link, which affects the effectiveness of communication question

Method used

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  • Method for sending sidelink retransmission request (BSR) and terminal equipment
  • Method for sending sidelink retransmission request (BSR) and terminal equipment
  • Method for sending sidelink retransmission request (BSR) and terminal equipment

Examples

Experimental program
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Effect test

Embodiment 1

[0094] see figure 2 , figure 2 It is a typical scenario of sidelink retransmission request BSR reporting. Terminal device 1 and terminal device 2 transmit V2X services through the sidelink link. Terminal device 1 and terminal device 2 use the resource scheduling mode of Mode1, that is, terminal device 1 sends network devices Request sidelink resource for sidelink data transfer.

[0095] After terminal device 1 sends sidelink data to terminal device 2, if terminal device 2 fails to receive the sidelink data, terminal device 1 needs to retransmit the sidelink data on the sidelink link, and the retransmitted sidelink data also needs to request sidelink resources from the network device. The sidelink resource request can use the sidelink retransmission request BSR, and all requests from the terminal device 1 to the network device (including the above-mentioned sidelink retransmission request BSR) are sent through the Uu link.

[0096] Since the terminal device 1 may have other...

Embodiment 2

[0110] When the transmission resources received by the MAC layer of the terminal device on the Uu interface are not enough to accommodate all the sidelink data BSRs and sidelink retransmission request BSRs, the sidelink data BSRs and sidelink retransmission request BSRs also need to be prioritized. Truncation of the BSR format to ensure that high priority content is transmitted first.

[0111] The format of the sidelink data BSR is as follows Figure 4 Shown:

[0112] The destination index is used to indicate the receiving terminal equipment, Figure 4 The sender terminal device in the network has established a sidelink transmission with more than one terminal device, and different terminal devices are distinguished by different destination indexes, such as Figure 4 Destination index 1 and destination index 2 in .

[0113] The logical channel group identifier LCG ID is used to identify different logical channel groups. A logical channel group can contain multiple logical c...

Embodiment 3

[0128] When the transmission resources received by the MAC layer of the terminal device on the Uu interface are not enough to accommodate all the sidelink data BSRs and sidelink retransmission request BSRs, the sidelink data BSRs and sidelink retransmission request BSRs also need to be prioritized. Truncation of the BSR format to ensure that high priority content is transmitted first.

[0129] Optionally, if the highest priority of the sidelink data BSR and the sidelink retransmission request BSR entries are the same, the transmission of the sidelink retransmission request BSR can be prioritized, so as to ensure that the retransmission data can be processed in time and reduce the delay.

[0130] Examples are as follows:

[0131] The sidelink data BSR includes the following items 1 and 2, and the sidelink retransmission request BSR includes the following item 3.

[0132] Entry 1: The logical channel priorities contained in destination index 1+logic channel group identifier 1 a...

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Abstract

The embodiment of the invention discloses a method for sending a sidelink retransmission request (BSR) and terminal equipment, which are used for solving the problem that the communication effectiveness is influenced due to the fact that the terminal equipment cannot determine how to send the sidelink retransmission request (BSR) and other data information on a Uu link. The method comprises the following steps: determining a sidelink retransmission request (BSR) and a sending priority of target information; and sending the sidelink retransmission request (BSR) and the target information according to the sending priority. According to the embodiment of the invention, important data information (such as a sidelink retransmission request (BSR) or target information) can be ensured to be transmitted preferentially, the reliability of a network equipment scheduling mode is ensured, and the resource utilization rate and the communication system efficiency are improved.

Description

technical field [0001] The embodiment of the present invention relates to the field of communication technology, in particular to a sidelink (sidelink, or translated as sidelink, sidelink, sidelink, etc.) retransmission request buffer status report (Buffer Status Report, BSR) sending method and terminal equipment. Background technique [0002] Sidelink transmission is mainly divided into broadcast, multicast and unicast. In sidelink unicast and multicast scenarios, the terminal device can adopt the resource scheduling mode of Mode1, that is, the sending terminal device requests sidelink resources from the network device for data transmission. [0003] After the sending terminal device sends data to the receiving terminal device through the sidelink link, if the receiving terminal device fails to receive the data, the sending terminal device needs to retransmit the data on the sidelink link. At this time, the sending terminal device can send A network device sends a sidelin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/02H04W72/12
CPCH04W28/0278H04W72/569
Inventor 鲍炜杨晓东
Owner VIVO MOBILE COMM CO LTD
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