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Method and device for indicating timing offset value

A technology of timing offset and offset value, which is applied in the field of communication, can solve problems such as the inability to realize link synchronization requirements, and achieve the effects of facilitating communication requirements, reducing interference, and meeting communication requirements

Active Publication Date: 2022-01-04
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 embodiments of the present application is to provide a method and device for indicating a timing offset value, which is used to solve the problem in the related art that the synchronization requirement between links cannot be realized

Method used

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  • Method and device for indicating timing offset value
  • Method and device for indicating timing offset value
  • Method and device for indicating timing offset value

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0108] This embodiment comprises the steps:

[0109] Step 1: The parent node ( image 3 IAB node 1) in send RAR, IAB node 2 ( image 3 The IAB node in 2) Obtain the TA value according to the RAR instruction, and the TA value is the initial TA.

[0110] Step 2: MAC CE carries 1 bit information to indicate the sign of the TA.

[0111] a) If it is negative, the TA value is the inverse of the acquired TA.

[0112] For example: TA=-(N TA +N TA,offset )*Tc, where N TA_new =N TA_old +(T A -31)·16·64 / 2 u ,T A It is the value indicated by MACCE.

[0113] TA in this formula is the final calculated timing offset value, N TA The value indicated for RAR, N TA,offset is a predefined or preconfigured offset value, and Tc is a predefined or preconfigured time unit value.

[0114] In this example, RAR can directly carry 12bits information, and the directly indicated value is T A =0,1,2,...,3846. The first communication device according to T A , get N TA =T A 16 64 / 2 u .

[...

Embodiment 2

[0120] This embodiment comprises the steps:

[0121] Step 1: The parent node ( image 3 IAB node 1) in send RAR, IAB node 2 ( image 3The IAB node in 2) Obtain the TA value according to the RAR instruction, and the TA value is the initial TA.

[0122] Step 2: TA indications of N cells (cells) are carried in the MAC CE. The MAC CE does not carry cell index (index) information, and indicates cell TAs in ascending order of cell IDs.

[0123] For example, if Figure 5 As shown, if each cell MAC CE requires 12 bits of indication information (according to the extended MAC CE, that is, the calculation of the first signaling mentioned above, at least it needs to reach the range indicated by the RAR, then you can refer to the indication of the RAR as 12 bits).

[0124] Step 3: The IAB node adjusts according to the obtained TA value.

Embodiment 3

[0126] This embodiment comprises the steps:

[0127] Step 1: The parent node ( image 3 IAB node 1) in send RAR, IAB node 2 ( image 3 The IAB node in 2) Obtain the TA value according to the RAR instruction, and the TA value is the initial TA.

[0128] Step 2: The TA indication of the cell is carried in the first signaling (MAC CE), and the cell index information is carried in the MAC CE

[0129] For example: if each cell MAC CE needs 12bits indication information (according to the extended MAC CE calculation, it needs to reach at least the range indicated by RAR, then you can refer to the RAR indication as 12bits), then its MAC CE design is as follows Image 6 As shown, among them, 1bity is used to indicate positive and negative, serving cell ID ( Image 6 (abbreviated as cell ID) is used to indicate cellindex, and TAC is used to indicate timing.

[0130] Step 3: The IAB node adjusts according to the obtained TA value.

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Abstract

The embodiment of the invention discloses a method and device for indicating a timing offset value, which are used for solving the problem that the requirement for synchronization between links cannot be met in the related technology. The method can be applied to a first communication device, and comprises the following steps: receiving a first signaling from a second communication device; obtaining a timing offset value according to the first signaling, wherein the timing offset value is used for adjusting the timing of the first communication equipment, wherein the first communication equipment comprises an IAB node, and the second communication equipment comprises a father node of the IAB node or an IAB host node or an IAB child node; or the first communication equipment comprises a terminal, and the second communication equipment comprises an IAB node or an IAB host node serving the terminal According to the embodiment of the invention, the synchronization requirement between links can be met, the interference between systems is reduced, and the normal communication requirement can be met.

Description

technical field [0001] The present application belongs to the technical field of communications, and in particular relates to a method and device for indicating a timing offset value. Background technique [0002] An integrated access and backhaul (IAB) system includes an IAB node (node), and an IAB node includes a mobile terminal (Mobile Termination, MT) functional part and a distributed unit (DistributedUnit, DU) functional part. Depending on the MT, the IAB node can find an upstream access point (ie, parent IABnode), and establish a wireless connection with the DU of the upstream access point. The DU of the IAB node will provide cell services for the sub-nodes, that is, the DU can provide access services for the UE (User Equipment) or the MT of the IAB sub-node. [0003] In the IAB node, the multiplexing of frequency division multiplexing (FDM, Frequency Division Multiplexing) / space division multiplexing (SDM, Space Division Multiplexing) needs to be supported between MT...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04W56/00
CPCH04L5/0053H04L5/0073H04W56/001H04L5/0094H04W56/0045
Inventor 彭淑燕刘进华王欢
Owner VIVO MOBILE COMM CO LTD
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