Cell reselection method and device, storage medium and 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 possibility and improving accuracy

Active Publication Date: 2020-06-16
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 and user terminal
  • Cell reselection method and device, storage medium and user terminal
  • Cell reselection method and device, storage medium and user terminal

Examples

Experimental program
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Embodiment Construction

[0043] In the prior art, an unlicensed spectrum is used in a LBT manner, wherein the NR system uses an unlicensed spectrum technology, which is also called a new radio access unlicensed (New RAT Un-license, NR-U for short) technology.

[0044] Specifically, by adopting the LBT process, a clear channel assessment (Clear Channel Assessment, CCA for short) can be performed before communication between the sending and receiving parties. If the evaluation result is that the channel is idle, the data is sent immediately; otherwise, the data cannot be transmitted until the end of the next fixed frame period. The fixed frame is composed of a channel occupancy time (Channel Occupancy Time, COT for short) and an idle period (Idle Period), wherein the channel occupancy time is from 1 millisecond (millisecond, ms for short) to 10 ms, and the minimum idle period is 10 ms of the channel occupancy time. 5%.

[0045] Wherein, the threshold (also referred to as the threshold) and the time thr...

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Abstract

Provided are a cell reselection method and device, a storage medium and a user terminal. The method comprises: if the number of LBT continuous failures in a previous cell exceeds a preset number threshold, residing in the current service cell; when the current serving cell needs cell reselection, reducing at least one reselection parameter value of the previous cell, and determining a set of target cells according to the reselection parameter value of each cell; sorting the target cells in the set; and sequentially selecting the target cells which are ranked in the front, and carrying out cellreselection. According to the scheme of the invention, the possibility of reselecting to the previous cell can be reduced.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a cell reselection method and device, a storage medium, and a user terminal. Background technique [0002] The 3rd Generation Partnership Project (3GPP) standards organization will study how to deploy the fifth-generation mobile communications (The Fifth-Generation mobilecommunications, 5G) New Radio (NR) on unlicensed spectrum ) system, so as to achieve the purpose of using the unlicensed spectrum fairly and effectively and improving the data transmission rate of the NR system. [0003] For the use of unlicensed spectrum, different countries have different regulatory methods. For example, an unlicensed spectrum needs to be used in a Listen-Before-Talk (LBT for short) manner. [0004] In the 5G NR communication system, the user equipment (User Equipment, referred to as UE) state includes radio resource control idle (Radio Resource Control-Idle, referred to as RRC...

Claims

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Application Information

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IPC IPC(8): H04W36/08H04W36/24H04W36/30H04W76/27
CPCH04W36/08H04W76/27H04W36/304H04W36/249H04W74/0808H04W16/14H04W48/20H04W36/0079H04W36/305H04W36/0058H04W74/0816
Inventor 韩立锋
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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