Method for preventing conflict between moving load balance and moving robustness optimization function

A mobile load balancing and robust technology, applied in network traffic/resource management, electrical components, wireless communication, etc., can solve problems such as UE ping-pong handover and wireless link failure

Inactive Publication Date: 2010-01-13
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, the two functions will enter a cycle, which will cause problems...

Method used

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  • Method for preventing conflict between moving load balance and moving robustness optimization function
  • Method for preventing conflict between moving load balance and moving robustness optimization function
  • Method for preventing conflict between moving load balance and moving robustness optimization function

Examples

Experimental program
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Embodiment 1

[0018] In the embodiment of the present invention, the Ping-Pong HO of the UE between adjacent eNBs is caused by inappropriate handover parameters. figure 1 A schematic diagram of Ping-Pong HO caused by handover threshold overlap is given.

[0019] This embodiment provides a method for avoiding the function conflict between MLB and MRO after Ping-Pong HO robustness optimization is performed. The specific implementation steps are as follows:

[0020] 1) After the MRO modules of eNB 1 and 2 that are neighbors detect that Ping-Pong HO occurs in the handover to the other eNB, they record the critical handover threshold interval when Ping-Pong HO occurs according to formula 1, which is denoted as T 1，2，PingPong . If the relevant parameters of eNB 1 or eNB 2 are updated, go to step 2, otherwise go to step 3;

[0021] T 1，2 =(H 1 -CIO 1，2 )+(H 2 -CIO 2，1 ) (1) H in Formula 1 1 is the hysteresis value (Hysteresis) of eNB i, CIO i，j The offset maintained by eNB i for eNB j (C...

Embodiment 2

[0028] In the embodiment of the present invention, Too Early HO will be triggered because the eNB uses inappropriate handover parameters. This embodiment provides a method for avoiding the function conflict between the MLB and the MRO after the Too Early HO robustness optimization is performed. The specific implementation steps are as follows:

[0029] 1) After the MRO module of eNB 1 detects that the handover to eNB 2 occurs Too Early HO, it records the hysteresis value H that caused the wrong handover 1，Early and the CIO 1，2，Early。 . where H 1，Early and the CIO 1，2，Early They are the hysteresis value (Hysteresis) used by eNB 1 and the cell offset (Cell Individual Offset) set by eNB 1 for eNB 2 when Too Early Ho occurs;

[0030] 2) Calculate the handover threshold where Too Early HO occurs, as in formula 4;

[0031] Threshold 1，2，Early =H 1，Early -CIO 1，2，Early (4)

[0032] 3) When eNB 1 is overloaded, use the MLB function for load balancing, and use formula 5 a...

Embodiment 3

[0035] In the embodiment of the present invention, Too Late HO is caused due to inappropriate handover parameters. This embodiment provides a method for avoiding the function conflict between the MLB and the MRO after the Too Late HO robustness optimization is performed. The specific implementation steps are as follows:

[0036] 1) After the MRO module of eNB 2 detects that Too Late HO occurs in the handover to eNB 1, the MRO of eNB 2 records the hysteresis value H when Too Late HO occurs 2，Late and the CIO 2，1，Late。 . where H 2，Late and the CIO 2，1，Late They are the hysteresis value (Hysteresis) used by eNB 2 and the cell offset (CellIndividual Offset) set by eNB 2 for eNB 1 when Too LateHo occurs;

[0037] 2) The MRO modules of eNB 1 and eNB 2 transmit the H and CIO when Too Late HO occurs to each other through the X2 interface. The MLB module of the eNB combines the T 1，2，PingPong , calculate the adjustable threshold range.

[0038] 3) eNB 2 calculates the handover ...

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Abstract

The invention provides a method for preventing a conflict between moving load balance and moving robustness optimization function, which adopts the main idea that when the moving load balance operation is carried out in an LTE-Advanced network, the adjustment of the moving load balance to a switching threshold needs to be limited in the tolerance range of the moving robustness optimization so as to prevent various switching problems caused by inaccurately adjusting the switching parameter by the moving load balance.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a method for solving mobile robustness optimization (MRO, Mobility Robustness Optimization) and mobile load balancing (MLB, Mobility Load Balance) in LTE (Long-term Evolution, 3GPP long-term evolution) network ) The method for function conflict belongs to the field of mobile communication. Background technique [0002] In the 3GPP long-term evolution system, due to the large number and high complexity of network parameters, manual configuration and management overhead for parameter configuration are too large. In order to improve the operation and maintenance performance of the network and minimize the manual intervention in the configuration and management of the base station (enhanced Node B, eNB), 3GPP proposed Self-Organizing Networks (SON), which is considered to reduce cost and complexity effective means. [0003] Self-organizing network is divided in...

Claims

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Application Information

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IPC IPC(8): H04W24/02H04W28/08H04W36/08
Inventor 薛开平彭敏洪佩琳刘志强叶浩
Owner UNIV OF SCI & TECH OF CHINA
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