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Method for carrying out switching strategy selection for user equipment (UE) in LTE system

A user equipment and strategy technology, applied in electrical components, wireless communication, etc., can solve the problems that the ping-pong handover is not completely relieved, it is impossible to identify eNodeB inter-frequency handover, etc., and achieve the effect of reducing the frequency

Active Publication Date: 2009-11-04
HUAWEI TECH CO LTD
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  • Summary
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] A method in the prior art to reduce ping-pong handover by transmitting UE history information is to add cell frequency information to UE history IE, but even if the frequency information is added to UE history IE, only UE in different Historical information of frequency layer handover. Due to the complexity of handover reasons, it is still impossible for eNodeB to identify potential reasons for other eNodeB handovers between different frequencies
Ping-pong switching is not fully mitigated

Method used

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  • Method for carrying out switching strategy selection for user equipment (UE) in LTE system
  • Method for carrying out switching strategy selection for user equipment (UE) in LTE system
  • Method for carrying out switching strategy selection for user equipment (UE) in LTE system

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no. 1 example

[0032] In the first embodiment, the handover process of the UE in the LTE system is used as the basis for description:

[0033] In the LTE system, when the UE is handed over between cells, the entire handover process roughly includes four steps: measurement-report-judgment-execution. That is, when the radio conditions change, the UE measures neighboring cells and sends a measurement report containing neighboring cell information to the base station to which the UE belongs. The identity of the cell is exchanged to complete the resource preparation of the target cell; then the base station of the UE sends a handover command to the UE; the UE disconnects the connection with the source cell according to the handover command, starts to synchronize to the target cell, and starts to send data on the target cell and receiving user data, the source base station to which the UE belongs releases the radio resources of the source cell, and the handover is completed.

[0034] Take UE hand...

no. 4 example

[0079] In the fourth embodiment, the present invention also provides a base station, such as Figure 7 As shown, the base station is used to store UE historical information, and the historical information includes a handover cause value. The base station selects a handover strategy for the UE according to the cause value. Further, the base station includes: a user equipment UE historical information storage module for storing Historical information prepared for UE handover, the historical information includes handover cause value; handover strategy selection module, used to select a handover strategy for UE according to the statistical analysis result of handover cause value data, and the selection of specific handover strategy corresponds to the first implementation The selection of various strategies for the example will not be repeated here. Further, the base station may also include a data statistics module, which is used to perform statistical analysis on the number of ti...

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Abstract

The invention provides a method of carrying out switching strategy selection for user equipment (UE) in an LTE system, mainly comprising the following steps: a base station carries out switching judgment according to the historical information of the UE, wherein the historical information contains a cause value of UE switching; and the base station carries out the switching strategy selection according to the data statistic analysis of the cause value of switching. The invention further provides a base station, and with the base station, the switching strategy selection of the UE can be carried out, and the frequency of ping pong switching is reduced.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a method and device for handover for user equipment UE. Background technique [0002] The ping-pong effect term in 3GPP is used to describe unnecessary handover (HO, Handover) with too high a frequency. In some cases UE may handover from one cell to another and back again. If this situation does not happen frequently and quickly, it is still considered normal, but the handover rate is high in the following scenarios, which means that the UE stays in the cell for a short time and increases the signaling complexity The risk of system (switching) failure is reduced. [0003] In the current Universal Mobile Telecommunications System (UMTS, Universal Mobile Telecommunications System), such as figure 1 As shown, mobility processing is completed by a radio network controller (RNC, Radio Network Controller). The RNC controls the base station NodeB, and each base ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/08H04W36/22H04W88/08
CPCH04W36/24
Inventor 汤斌淞亨里克·奥鲁佛松迈克尔·罗伯茨
Owner HUAWEI TECH CO LTD
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