Method and system capable of adjusting parameters according to moving speed of terminal

A technology of moving speed and speed, applied in the field of mobile communication, can solve the problems of UE being unable to adjust handover parameter configuration in time, high risk of handover failure, etc.

Inactive Publication Date: 2012-07-11
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method and system for adjusting parameters according to the mobile speed of the terminal, so as to solve the problem that the UE cannot adjust the handover parameter configuration in time when the specified number of cell handovers has not been reached, resulting in a high risk of handover failure

Method used

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  • Method and system capable of adjusting parameters according to moving speed of terminal
  • Method and system capable of adjusting parameters according to moving speed of terminal
  • Method and system capable of adjusting parameters according to moving speed of terminal

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Experimental program
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Effect test

Embodiment 1

[0049] In the first embodiment, the terminal in the idle state adjusts the cell reselection parameters according to the current moving speed.

[0050] The speed determination module (104), is used for measuring the signal strength of the serving cell in the N measurement periods in the N measurement periods, and calculates the signal strength difference of the serving cell in N-1 adjacent measurement periods, the N - When the signal strength difference of 1 serving cell satisfies the high-speed threshold, it is determined that the moving speed is high-speed; when the signal strength difference of the N-1 serving cells meets the medium-speed threshold and does not meet the high-speed threshold, it is determined that the moving speed is medium-speed;

[0051] The parameter adjustment module (105) is also used for performing cell reselection under high-speed conditions, increasing the high-speed coefficient value as the updated cell reselection threshold on the basis of the cell r...

Embodiment 2

[0061] The system parameter is the cell handover trigger duration, and the mobile terminal in the connected state measures the signal strength of the serving cell in N measurement cycles in N measurement cycles, and calculates the serving cell in N-1 adjacent measurement cycles Signal strength difference, when the signal strength difference of the N-1 serving cells satisfies the high-speed threshold, the mobile terminal determines that the moving speed is high-speed, and when performing adjacent cell measurement, the cell handover trigger time determined by the base station is multiplied by the high-speed coefficient After the value is used as the cell handover trigger duration after the update; when the signal strength difference of the N-1 serving cells satisfies the medium-speed threshold and does not meet the high-speed threshold, the mobile terminal determines that the moving speed is medium-speed, and when performing neighbor cell measurements, The cell handover trigger t...

specific Embodiment 1

[0063] Such as figure 2 As shown, in the first embodiment, in the system parameter message of the cell, the UE speed determination criterion is sent to the UE, and the UE in the idle state judges the current moving speed after receiving the speed determination criterion delivered by the base station, for Adjust cell reselection parameters.

[0064] In step 1, the base station sends the UE speed determination criterion in the system parameter message of the cell according to the system configuration, and the criterion is described in the Mobility State Parameters (Mobility State Parameters) information element.

[0065] Specifically, the base station adds the following UE speed determination parameters in the Mobility State Parameters information element of SIB3 (SystemInformationBlockType3), and the parameter names include but are not limited to:

[0066] n-RxEvaluatePeriod, indicating the number of measurement periods;

[0067] t-RxEvaluatePeriod, indicating the length of ...

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Abstract

The invention discloses a method and a system capable of adjusting parameters according to the moving speed of a terminal. The method comprises the steps: a mobile terminal can detect signal strength of a small serving cell and judge the current moving speed according to speed judgment rulers issued by a base station, system parameters are adjusted according to the moving speed, and the system parameters are small cell reselection threshold parameters or switching trigger duration parameters. The method and the system aim at defects of switching parameters based on user experience (UE) speed dynamic adjustment in the 3rd generation partnership project (3GPP) to provide the method based on UE moving speed judgment according to trend of small cell signal quality change in the current serving cell. By means of the method and the system, accuracy and timeliness of the UE speed judgment are improved, switching success rate of networks is improved, and user experience is improved.

Description

technical field [0001] The present invention relates to the field of mobile communication technology, in particular to a method and system for adjusting parameters according to the moving speed of a terminal in an Evolved Universal Terrestrial Radio Access Network (E-UTRAN for short). Background technique [0002] In order to ensure service continuity when a user moves in a wireless network, it is inevitable for a terminal to switch between cells. User Equipment (UE) performs timely handover according to reasonable handover configuration parameters, which can not only improve the handover success rate index of the network, but also improve user experience; unreasonable handover configuration parameters will not only cause The unreasonable handover timing of the UE leads to call drop before the handover is triggered, and will cause a series of problems such as handover too early, handover too late, handover to the wrong cell, and ping-pong handover. How to configure reasonab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/24
CPCH04W36/24G01S11/06H04W64/006H04W36/32H04W36/0083H04W36/00837H04W36/0085
Inventor 田炜王新台武娟
Owner ZTE CORP
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