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Method, device and system for realizing self-optimization of switching parameter

A handover parameter and self-optimization technology, applied in electrical components, wireless communication, etc., can solve handover failure (handover failure, UE wireless link failure, difficulty in meeting operator's requirements, etc., to reduce construction and operation costs, reduce Manual participation to achieve the effect of self-optimization

Inactive Publication Date: 2010-09-29
CHINA ACAD OF TELECOMM TECH
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Problems solved by technology

[0005] However, if the handover parameters are not set properly, the probability of UE radio link failure (Radio Link Failure, RLF) or handover failure (handover failure) will increase, which requires optimization of the handover parameters; , the setting of handover parameters is manually set, and the optimization of corresponding handover parameters is also manually optimized: specifically, network optimization personnel conduct actual drive tests, collect statistics on measurement results, and adjust handover parameters after analyzing the measurement results; However, manual optimization of switching parameters greatly increases the cost of network construction and operation, making it difficult to meet the requirements of operators.
Therefore, in LTE and later systems, it is urgent to improve the optimization scheme of handover parameters to reduce the manual participation in network planning and operation and maintenance, and reduce the cost of network construction and operation. ideal solution for

Method used

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  • Method, device and system for realizing self-optimization of switching parameter
  • Method, device and system for realizing self-optimization of switching parameter
  • Method, device and system for realizing self-optimization of switching parameter

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Embodiment 2

[0049] The method for realizing the self-optimization of switching parameters in the above-mentioned embodiment will be described in detail below through specific reconstruction reasons, as shown in image 3 In the shown embodiment 2, the wireless link failure is indicated as the cause of reconstruction as an example:

[0050] If the handover parameter setting is inappropriate, it will lead to too late handover, and RLF occurs when the UE is too late to handover in the source cell. At this time,

[0051] In step S301, the UE initiates an RRC connection reestablishment request to the base station;

[0052] In step S302, the base station receives the RRC connection reestablishment request message initiated by the UE due to RLF, and the request message includes a reestablishment reason indicated as RLF and a source cell identifier;

[0053] In step S303, the base station reports the reestablishment reason and the source cell identifier in the request message to the O&M;

[0054...

Embodiment 3

[0057] like Figure 4 In the shown embodiment 3, taking the rebuilding cause indication as handover failure as an example:

[0058] If the handover parameters are not set properly, it will lead to premature handover. The source base station sends a handover command to the UE, and the UE initiates a random access process to the target cell. Due to the premature handover, the UE is still far away from the target base station, resulting in handover failure. hour,

[0059] In step S401, the UE will initiate an RRC connection reestablishment request to the base station for handover failure;

[0060] In step S402, the base station receives the RRC connection re-establishment request message initiated by the UE due to the handover failure, and the request message includes the re-establishment reason and the source cell identifier indicating the handover failure;

[0061] In step S403, the base station reports the reestablishment reason and the source cell identifier in the request ...

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Abstract

The invention relates to a method, a device and a system for realizing self-optimization of a switching parameter. The method comprises the following steps of: acquiring a reestablishment reason for UE to initiate RRC connection reestablishment request and a mark of a source cell of the UE; counting the reported frequency of the cell over the current reestablishment reason; and if the reported frequency is higher than a preset threshold, correspondingly adjusting the switching parameter according to the reestablishment reason. The invention shows that the method, the device and the system can realize self-optimization of the switching parameter, reduce the human intervention of the network planning and the operation and maintenance and lower the establishment cost and the operation cost for the network.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a method, device and system for realizing self-optimization of switching parameters. Background technique [0002] In a mobile communication system, when a connected UE (user terminal) moves from one cell to another, or due to reasons such as wireless transmission, traffic load adjustment, equipment failure, etc., in order to ensure the continuity of user services, the network The side often needs to switch the user to a new cell, and a new and better cell provides services for it. [0003] In UMTS (Universal Mobile Telecommunications System, Universal Mobile Communications System) and LTE (Long Term Evolution, Long Term Evolution) systems, the network node makes a handover decision based on the mobility measurement report of the UE to select a target cell for handover: [0004] The UE performs measurement according to the measurement control command. When the repor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/02H04W36/00
Inventor 寇会如秦飞
Owner CHINA ACAD OF TELECOMM TECH
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