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Cell selection method and device

A technology of cell selection and cell reselection, applied in access restriction, electrical components, wireless communication, etc., can solve problems such as nodes not working normally, and achieve the effect of improving robustness

Active Publication Date: 2022-01-07
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method and equipment for cell selection, which is used to solve the problem in the prior art that when an IAB node selects a cell or reselects a cell, the backhaul link of the IAB node forms a loop, and the nodes in the loop cannot work normally. work problem

Method used

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  • Cell selection method and device

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0239] Such as Figure 6 As shown in , it is a schematic flowchart of a cell selection method disclosed in an embodiment of the present invention.

[0240] S601. The first IAB node receives ID information of a descendant node of the first IAB node;

[0241] S602. The first IAB node receives the RLF notification information sent by the parent node of the first IAB node;

[0242] S603, the first IAB node judges whether there are other IAB nodes except the descendant nodes of the first IAB node according to the ID information of the descendant nodes of the first node, if there are, execute S604, otherwise execute S605;

[0243] S604. The first IAB node selects other IAB nodes except the descendant nodes of the first IAB node to access;

[0244] S605. The first IAB node sends RLF notification information to the child nodes of the first IAB node;

[0245] S606. The first IAB node selects any IAB node in the IAB network to access.

Embodiment 2

[0247] Such as Figure 7 As shown in , it is a schematic flowchart of another cell selection method disclosed in the embodiment of the present invention.

[0248] S701. The first IAB node receives ID information of a descendant node of the first IAB node;

[0249] S702. The first IAB node receives the RLF notification information sent by the parent node of the first IAB node;

[0250] S703. The first IAB node judges whether there is a node whose received power is greater than the power threshold, and if so, executes S704, otherwise executes S707;

[0251] S704. The first IAB node uses nodes whose received power is greater than the power threshold as a set of candidate nodes;

[0252] S705, the first IAB node judges whether other IAB nodes other than the descendant nodes of the first IAB node exist in the candidate node set according to the ID information of the descendant nodes of the first node, and if so, execute S706, otherwise execute S709;

[0253] S706. The first IAB ...

Embodiment 3

[0261] Such as Figure 8 As shown in , it is a schematic flowchart of another cell selection method provided by the embodiment of the present invention.

[0262] S801. The first IAB node confirms the hop number information of the first IAB node;

[0263] The first IAB node adds 1 to the received hop count information of the parent node of the first IAB node, which is the hop count information of the first IAB node.

[0264] S802. The first IAB node receives the RLF notification information sent by the parent node of the first IAB node;

[0265] S803, the first IAB node judges whether there is an IAB node whose hop number information is less than or equal to the hop number information of the first IAB node in the IAB network, if so, execute S804, otherwise execute S809;

[0266] S804. The first IAB node selects an IAB node whose hop count information is less than or equal to the hop count information of the first IAB node;

[0267] S805, the first IAB node judges whether the...

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Abstract

The invention discloses a method and equipment for selecting a cell, which are used for solving the problems that a return link of an IAB node forms a loop and nodes in the loop cannot work normally when the IAB node performs cell selection or cell reselection in the prior art. The method comprises the steps that a first node selects a second node according to node information used for determining a descendant node of the first node in an IAB network in the process of cell selection or cell reselection, and the first node accesses the second node. The second node accessed by the first node is selected according to the node information used for determining the descendant node of the first node in the IAB network, so that the first node can be prevented from being accessed to the descendant node of the first node, a return link forms a loop, and the robustness of data transmission of the IAB node can be improved.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a cell selection method and equipment. Background technique [0002] IAB (Integrated Access and Backhaul) network technology achieves the purpose of expanding the coverage of base stations by relaying wireless signals between multiple nodes. IAB network technology is a network networking mode for the future fifth generation (5thGeneration, 5G) to solve the problem of base station coverage. [0003] In the IAB network, on the one hand, when an RLF (radio link failure, wireless link failure) occurs between the IAB node and its parent node, the IAB node will notify its child nodes so that the child nodes can reselect other base stations or IAB nodes for access. That is, cell reselection is performed to restore the access and backhaul link of the child node; on the other hand, when the IAB node is not connected to other nodes, in order to form a backhaul link,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/00H04W36/08H04W48/08H04W48/16H04W48/20
CPCH04W36/0061H04W48/08H04W48/16H04W48/20H04W36/00
Inventor 王达曾二林孙建成
Owner DATANG MOBILE COMM EQUIP CO LTD