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Method and system for reporting measurement result as well as method and system for switching cells

A technology of measurement results and measurement reports, applied in wireless communication, electrical components, etc., can solve the problems of untimely switching, call drop, speed result error, loss of wireless coverage, etc., achieve timely switching, high accuracy, and reduce processing load Effect

Active Publication Date: 2015-05-20
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the UE loses wireless coverage, and the handover is not timely, resulting in dropped calls.
[0006] The timeliness of switching is improved by adopting the method of CN20010089131.2 patent, but in practical application, due to the limitation of UE's processing capability and power consumption, the speed result measured by UE often has a large error
On the other hand, measuring speed and reporting speed information requires UE to add functions, but currently there are various types of user terminals on the market and thousands of manufacturers, it is hard to imagine that so many UEs can be uniformly added to realize the above new functions
Another problem with this patent is that the application scenario of the disclosed method is only applicable to the handover of the UE to cells of different levels

Method used

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  • Method and system for reporting measurement result as well as method and system for switching cells
  • Method and system for reporting measurement result as well as method and system for switching cells
  • Method and system for reporting measurement result as well as method and system for switching cells

Examples

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Embodiment 1

[0050] When the UE is in a scene of high-speed movement, such as moving on a high-speed railway or a highway, it often passes through a cell quickly. If according to the existing technology, the UE first measures the signal strength of the current cell and the adjacent cell, and then sends a measurement report to the RNC to request handover after finding that the signal strength of the current cell is lower than a certain value, then the RNC may not have time Before the decision handover is completed, the UE has already moved out of the original serving cell, resulting in handover failure and call drop. On the other hand, the base station may have multiple methods to measure the moving speed of the UE in real time, and using this information to implement handover of the UE may improve the timeliness and accuracy of the handover.

[0051] refer to figure 1 , what is described in the figure is a process in which the NodeB measures the moving speed of the UE and reports it to th...

Embodiment 2

[0084] In order to further improve the accuracy and timeliness of the RNC judging UE handover, the NodeB increases the reporting of UE Doppler frequency shift measurement information in this embodiment. The Doppler frequency shift of the UE is a frequency shift caused by the Doppler effect of the UE in motion. After the RNC integrates the UE's moving speed and Doppler frequency shift, it is beneficial to make a more accurate handover decision.

[0085] The following are the specific steps of Example 2, and the same parts as Example 1 are omitted.

[0086] In step 201, the RNC sends a measurement initial message to the NodeB, ordering the NodeB to measure the moving speed of the UE and report the measurement result to it through a measurement report.

[0087] Same as in the first embodiment, there are two reporting methods for the RNC to request the NodeB to report the measurement result of the UE's moving speed, namely periodic reporting and triggered reporting. The flow descr...

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Abstract

The present invention relates to a method for reporting measurement result and a method and a system for handing over cells based on the method for reporting measurement result when applying the third generation mobile communication technologies to a scene of a User Equipment(UE) moving in high speed. It is used for solving the technical problem that the UE can not implement the exact handing over in the scene of moving in high speed. A NodeB measures the movement speed of UEs within the cell covered by the NodeB and reports it to a Radio Network Controllers(RNC) by a measurement report. According to the reported movement speed of the UE, the RNC determines whether the UE hands over to a new cell or not. The cell handing over can be made more timely and exact by the present invention.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to the application of the third-generation mobile communication technology to the reporting of cell measurement results in fast-moving scenarios of user terminals (such as high-speed railway and highway scenarios) A method and system for implementing cell handover through measurement reports. Background technique [0002] The development of personal mobile communication has greatly enriched people's lives, enabling people to enjoy voice or data communication services conveniently at any place, any time, and under any conditions. Behind the realization of this goal is that user terminals can freely implement handover and roaming functions across local networks between cells in the mobile cellular network. Taking the third-generation mobile communication system as an example, its wireless access network is composed of many cells in a cellular shape, and each cell is covere...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/10H04W36/30H04W36/32
CPCH04W36/0085H04W36/00837
Inventor 朱昀黄河王曼
Owner ZTE CORP