Cell reselection method and device, storage medium, user terminal

A technology of cell reselection and cell selection, which is applied in the field of communication, can solve problems such as LBT failure, and achieve the effect of reducing the possibility

Active Publication Date: 2021-12-14
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the prior art, when the UE needs to perform cell reselection again, it is easy to reselect back to the previous cell, causing the problem of continuous LBT failure to occur again

Method used

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  • Cell reselection method and device, storage medium, user terminal
  • Cell reselection method and device, storage medium, user terminal
  • Cell reselection method and device, storage medium, user terminal

Examples

Experimental program
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Embodiment Construction

[0043] In the prior art, by the use of unlicensed spectrum LBT manner, wherein, NR systems using unlicensed spectrum technology is also referred to as a new unlicensed radio access (New RAT Un-license, referred to as NR-U) technology.

[0044] Specifically, the process employed LBT, prior to sending and receiving sides can communicate, for Clear Channel Assessment (ClearChannel Assessment, abbreviated CCA). If the evaluation result of the channel is idle, then data is immediately sent; otherwise, until the end of the next fixed frame period can not transmit data. The fixing frame is occupied by the channel time (ChannelOccupancy Time, referred COT) and an idle period (Idle Period) composition, wherein the channel occupancy time of 1 ms (millisecond, referred ms) to 10ms, minimum idle period of the channel occupation time 5%.

[0045] Wherein, LBT threshold number of consecutive failures (also referred to as a threshold) and a time threshold, the network side may be configured, you...

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Abstract

A method and device for cell reselection, a storage medium, and a user terminal, the method comprising: staying in the current serving cell if the number of consecutive LBT failures in the previous cell exceeds the preset threshold; When performing cell reselection, reduce at least one reselection parameter value of the previous cell, and determine a set of target cells according to the reselection parameter values ​​of each cell; sort the target cells in the set; The previous target cell is used for cell reselection. The solution of the present invention can reduce the possibility of reselecting back to the previous cell.

Description

Technical field [0001] The present invention relates to communication technologies, particularly to a method and an apparatus for cell reselection, the storage medium, the user terminal. Background technique [0002] Third Generation Partnership Project (The 3rd Generation Partnership Project, referred to as 3GPP) standards organization will study how to deploy the fifth-generation mobile communication (The Fifth-Generation mobilecommunications, referred 5G) new wireless (New Radio on unlicensed spectrum, referred to as NR ) system, so as to achieve a fair and efficient use of unlicensed spectrum, the purpose of improving data transmission rate NR system. [0003] For use unlicensed spectrum, and different countries have different regulatory way. For example, for an operation (Listen-Before-Talk, referred LBT) manner by using unlicensed spectrum listen before talk. [0004] In 5G NR communication system, a user equipment (User Equipment, abbreviated UE) status includes a radio re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/08H04W36/24H04W36/30H04W76/27
CPCH04W36/08H04W36/30H04W36/24H04W76/27H04W74/0808H04W16/14H04W48/20H04W36/0079H04W36/305H04W36/0058H04W74/0816
Inventor 王婷婷
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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