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Method and system for realizing rapid switching in communication network

A communication network and fast switching technology, applied in wireless communication, electrical components, etc., can solve problems such as distance measurement timeout failure, time-consuming, and message loss, so as to avoid switching failure, reduce switching time, and reduce time-consuming Effect

Inactive Publication Date: 2013-02-06
BEIJING XINWEI TELECOM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To realize the ranging process, the mobile terminal needs to send a ranging request to the target base station first, and after performing the ranging operation, the target base station needs to send the ranging result to the mobile terminal, and the terminal calculates the uplink timing with the target base station according to the ranging result The amount of advance, the ranging process takes a lot of time, which increases the handover delay of the mobile terminal. In addition, the mobile terminal and the target base station will perform message interaction during the ranging process. If the quality of the air interface link decreases, the message will be lost, making the measurement The distance fails due to timeout, which leads to the switchover failure, which increases the unreliability of the switchover process
[0015] To sum up, the handover process provided by the prior art may take a long time for the handover process, which cannot meet the handover delay requirement of the communication system

Method used

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  • Method and system for realizing rapid switching in communication network
  • Method and system for realizing rapid switching in communication network
  • Method and system for realizing rapid switching in communication network

Examples

Experimental program
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Embodiment 1

[0040] Such as figure 2 As shown, in this embodiment, the handover process specifically includes the following steps:

[0041] Step 21, the mobile terminal selects the target base station to be handed over according to the periodic measurement parameter information;

[0042] The mobile terminal can make a handover decision according to the signal strength of the serving base station and the adjacent base station obtained by periodic measurement. When the signal strength of an adjacent base station meets the handover condition, the terminal sets this base station as the target base station for handover;

[0043] In order to minimize the time spent in the handover process, the mobile terminal can also calculate and determine link budget information such as downlink timing deviation, frequency deviation, and path loss with the target base station based on the synchronization signal strength of the serving base station and adjacent base stations measured periodically. The mobile...

Embodiment 2

[0056] In this embodiment, when the mobile terminal accesses the target base station, it obtains one or more combinations of link budget information such as downlink timing deviation, frequency deviation and path loss with the target base station through the public channel, and according to the link budget information Realize downlink synchronization with the target base station.

[0057] Such as image 3 As shown, in this embodiment, the handover process specifically includes the following steps:

[0058] Step 31, the mobile terminal selects the target base station to be handed over according to the periodic measurement parameter information;

[0059] The mobile terminal can make a handover decision according to the signal strength of the serving base station and the adjacent base station obtained by periodic measurement. When the signal strength of an adjacent base station meets the handover condition, the terminal sets this base station as the target base station for hando...

Embodiment 3

[0072] This embodiment provides a terminal supporting the method of the present invention, and its specific implementation results are as follows Figure 4 As shown, it can mainly include the following processing units:

[0073] (1) a period measurement unit, used to measure the signal strength of the serving base station and adjacent base stations, parameter information such as synchronization signals within a predetermined period, and prepare for handover judgment;

[0074] (2) handover judging unit, used for judging whether to initiate handover according to the parameter information measured by the period measurement unit;

[0075] The terminal switching judging unit specifically includes:

[0076] The target base station selection module is used to select the target base station for handover according to the signal strength of the serving base station and adjacent base stations obtained by periodic measurement, and through predetermined selection conditions;

[0077] The...

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Abstract

The invention provides a method for realizing rapid switching; and the method comprises the steps as follows: (a) a mobile terminal is used for periodically measuring signal intensities of a service base station and a neighbor base station; when the signal intensity of one neighbor base station satisfies a switching condition, the terminal is used for setting the base station as a target base station to be switched; (b) the mobile terminal is used for applying to the target base station for special resources for switching through the service base station and is used for obtaining GPS (Global Positioning System) information of the target base station and public channel resources; (c) the mobile terminal is used for calculating uplink timing advance between the mobile terminal and the target base station according to the GPS information of the target base station; and (d) the mobile terminal is used for directly accessing the target base station into special resources for switching according to the uplink timing advance so as to finish switching operation. The invention further discloses a system for realizing rapid switching. According to the invention, on the basis that the switching reliability is guaranteed, the time spent in the switching process can be effectively reduced so as to satisfy switching delaying requirements in a communication system.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method and system for realizing fast switching in a communication network. Background technique [0002] In the wireless communication process, the mobile terminal will switch between different base stations in order to obtain better communication quality during the moving process. [0003] In existing communication technologies (such as LTE or UMTS), the process of mobile terminal switching between base stations is as follows: figure 1 As shown, it mainly includes the following steps: [0004] Step 11, the terminal periodically performs measurement reporting; [0005] Step 12, the serving base station selects the target base station to be handed over by the mobile terminal according to the measurement information reported by the terminal; [0006] Step 13, the serving base station sends a handover application message to the target base station, and at the same time sen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/08H04W36/24H04W36/36
Inventor 余西西黄其华温斌
Owner BEIJING XINWEI TELECOM TECH
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