Method and system for realizing rapid switching in communication network

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...

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

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