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Method and device for selecting cells to be switched at switching preparatory stage

A technology for cell handover and handover preparation, applied to electrical components, wireless communications, etc., can solve problems such as ping-pong handover, handover failure, and increased network signaling load, so as to reduce signaling load, improve success rate, and avoid ping-pong handover Effect

Active Publication Date: 2015-05-20
北京万海云科技有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0008] In the existing technology, the handover parameters shared by all adjacent cells of the serving cell do not reflect the differences between cells, and the serving cell sends handover requests to too many cells to be handed over, which is prone to handover failure and increases the signaling load of the network
In order to achieve load balancing, the UE switches from a cell with a high load to a cell with a low load. If the handover parameters are not adjusted, when the signal measurement value of the cell with a high load is higher than that of a cell with a low load, it is easy to cause ping-pong between cells to switch
The UE is handed over to a cell with a high load, which is prone to handover failure

Method used

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  • Method and device for selecting cells to be switched at switching preparatory stage
  • Method and device for selecting cells to be switched at switching preparatory stage
  • Method and device for selecting cells to be switched at switching preparatory stage

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Embodiment Construction

[0028] image 3 It is a flow chart of a method for selecting a cell to be handed over in the handover preparation stage in the present invention. This method is applicable to the wireless network long-term evolution network LTE access system, such as image 3 As shown, the method includes:

[0029] In step 301, the source cell acquires resource state information of each adjacent cell, and divides each adjacent cell into different load states according to the resource state information of each adjacent cell.

[0030] Step 302, the source cell adjusts the handover parameters corresponding to each adjacent cell according to the load status of each adjacent cell.

[0031] Step 303, when the UE in the source cell needs to be handed over, the source cell selects the cell to be handed over of the UE from each adjacent cell according to the adjusted handover parameters of each adjacent cell.

[0032] In order to make the purpose, technical solution and advantages of the present inv...

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Abstract

The invention discloses a method and device for selecting cells to be switched at a switching preparatory stage. In the method, a source cell acquires resource state information of each adjacent cell, and each adjacent cell is classified into different load states in accordance with the resource state information of each adjacent cell; the source cell adjusts switching parameters corresponding to the adjacent cell in accordance with the load state of each adjacent cell; and when user equipment (UE) in the source cell needs to be switched, the source cell selects the cells to be switched of the UE in the adjacent cells in accordance with the adjusted switching parameters of each adjacent cell. By using the technical scheme disclosed in the invention, the appropriate cells to be switched can be selected and the switching success rate is improved.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a method and equipment for selecting a cell to be switched in the handover preparation stage. Background technique [0002] A Long Term Evolution (LTE, Long Term Evolution) system adopts a flat network structure. figure 1 It is the structure diagram of LTE network. Such as figure 1 As shown, the Evolved Universal Terrestrial Radio Access Network (E-UTRAN, Evolved Universal Terrestrial Radio AccessNetwork) is composed of base stations (eNB, evolved Nodeb), and related messages are transmitted between eNBs through the X2 interface; the evolved packet core network ( Evolved Packet Corenet work (EPC) includes a Serving Gateway (S-GW, Serving Gateway) and a Mobility Management Entity (MME, Mobility Management Entity), and interacts with the eNB through the S1 interface. Each eNB includes multiple cells. [0003] In a wireless communication system, when a connected UE moves from o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/10H04W36/00H04W36/04
Inventor 段艳华李淼王晓东
Owner 北京万海云科技有限公司
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