Switching method in long term evolution (LTE) communication system facing high speed railway and system thereof

A communication system, high-speed railway technology, applied in the direction of wireless communication, electrical components, etc., can solve the problems that cannot be directly used in LTE system, does not consider QoS guarantee of multimedia services, and has no solution for LTE system, so as to achieve easy implementation and improve handover performance, and the effect of avoiding forwarding delay
CN102413520BActive Publication Date: 2015-03-04INST OF COMPUTING TECH CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF COMPUTING TECH CHINESE ACAD OF SCI
Publication Date
2015-03-04

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Abstract

The invention provides a switching method in a long term evolution (LTE) communication system facing a high speed railway. The switching method is characterized in that: a source base station determines whether switching is needed according to a headstock antenna measuring report sent by a vehicle relay station; if the switching is needed, the vehicle relay station controls the headstock antenna to access to a target base station and simultaneously a tailstock antenna maintains connection with the source base station; when the tailstock antenna satisfies a switching condition, the vehicle relay station controls the tailstock antenna to access to the target base station according to the resource applied by headstock antenna in the target base station. By using the method, a large amount of users can not generate switching simultaneously. Through using a bicasting mechanism in a switching problem, switching delay can be reduced and a service quality during the switching can be guaranteed.
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Description

technical field

[0001] The invention belongs to the technical field of train wireless communication, and in particular relates to a method used in an LTE communication system of a high-speed railway to complete switching of a mobile device in a vehicle. Background technique

[0002] With the rapid development of high-speed railway systems in my country and other Asian countries in recent years, as well as the growth of multimedia communication services, the demand for real-time, large data volume, and high transmission rate multimedia business communications in high-speed railways has become increasingly obvious. Therefore, higher requirements are put forward for the bandwidth and peak rate of the railway wireless communication system. The traditional railway-specific global wireless communication system GSM-R (Global System for Mobile Communications-Railway) can only provide simple text, voice communication, and train control information communication, which cannot meet the...

Claims

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