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Beam failure recovery method and device, storage medium, and terminal for auxiliary link

A recovery method and auxiliary link technology, applied in the field of communications, can solve problems such as inability to provide effective solutions and relief measures, affecting the communication quality of auxiliary links, etc., so as to improve communication quality, shorten beam recovery time, and optimize beam management logic. Effect

Active Publication Date: 2021-08-17
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is currently no discussion on beam management and BFR for the secondary link
If there is a problem with the communication between the two terminals of the auxiliary link in the current beam, the existing technology cannot provide effective solutions and relief measures, which seriously affects the communication quality of the auxiliary link

Method used

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  • Beam failure recovery method and device, storage medium, and terminal for auxiliary link
  • Beam failure recovery method and device, storage medium, and terminal for auxiliary link
  • Beam failure recovery method and device, storage medium, and terminal for auxiliary link

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0125] Example 1, the beam failure information is sent through the PSFCH in a special sequence (sequence) form, so as to inform the sending terminal 21 that a beam failure event currently occurs.

[0126] Specifically, the resource sequence number of the PSFCH used to carry the beam failure information may have a mapping relationship with the new beam.

[0127] For example, the resource sequence number of the PSFCH may have a mapping relationship with the SL CSI-RS resource sequence number, the SL TRS resource sequence number or the S-SSB resource sequence number. Thus, after receiving the beam failure information carried by the PSFCH, the sending terminal 21 can implicitly know the index number of the new beam recommended by the receiving terminal 22 .

[0128] Wherein, the resource sequence number of the PSFCH may be the lowest subchannel index (lowest subchannel index), the highest subchannel index (highest subchannel index), the lowest physical resource block index (lowest...

example 2

[0129] Example 2, the beam failure information may be sent through the PSCCH.

[0130] Specifically, the beam failure information may carry one or more of the following contents: an indication of a beam failure event currently occurring; a CC index (Component Carrier, CC index) where a beam failure occurs; RSRP or SINR of a new beam; RS index of the new beam; CC index (index) of the RS of the new beam; indication information of no new beam; destination id (destination id); source id (source id); HARQ process ID (HARQ process id). Wherein, the indication information of no new beam may be indicated by a resource sequence number of PSFCH, PSSCH or PSCCH.

[0131] Wherein, the resource sequence number of the PSCCH may have a mapping relationship with the SL CSI-RS resource sequence number, the SL TRS resource sequence number or the S-SSB resource sequence number. Thus, after receiving the beam failure information carried by the PSCCH, the sending terminal 21 can implicitly know t...

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PUM

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Abstract

A beam failure recovery method and device, a storage medium, and a terminal for an auxiliary link, the auxiliary link is a communication link between a sending terminal and a receiving terminal, and the method includes: when the current channel or a reference signal The monitoring result indicates that when a beam failure event occurs, determine a new beam for beam failure recovery; send a response message for the beam failure event; wherein, the monitoring operation on the current channel or reference signal is performed by the sending terminal and / or Or the receiving terminal executes; the new beam is selected by the sending terminal and / or the receiving terminal. The present invention provides an effective BFR mechanism for the auxiliary link, which can optimize the beam management logic of the auxiliary link and improve the communication quality of the auxiliary link.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to a beam failure recovery method and device, a storage medium, and a terminal for an auxiliary link. Background technique [0002] The beam failure recovery (Beam Failure Recovery, BFR for short) process on the Uu link (Uu link) has been extensively studied in the protocol version 15 (Release 15, R15 for short) and Release 16 respectively. Among them, Release 15 studies the BFR of a special cell (Special Cell, referred to as sPCell), where sPCell includes a primary cell (Primary Cell, referred to as PCell) and a primary secondary cell (Primary Secondary Cell, referred to as PSCell); Release 16 studies the secondary cell A BFR of a cell (Secondary Cell, SCell for short). [0003] On the other hand, in order to meet the special requirements for communication in the Internet of Vehicles and other similar or related application scenarios, the research on the sidel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/04H04W72/04H04B17/309H04B17/382
CPCH04W24/04H04W72/046H04B17/309H04B17/382
Inventor 张萌
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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