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 wireless communication, electrical components, etc., can solve problems such as not considering multimedia service QoS guarantee, not being able to be directly used in LTE system, and having no LTE system solution, etc., to achieve easy implementation and improve handover performance, and the effect of avoiding forwarding delay

Active Publication Date: 2012-04-11
INST OF COMPUTING TECH CHINESE ACAD OF SCI
View PDF5 Cites 52 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the railway communication system mainly adopts the GSM-R system. In order to solve the problem of simultaneous switching of a large number of users in the high-speed rail communication system, a switching mechanism based on a double-layer architecture and a dual-antenna model is usually adopted, but there is no solution for the LTE system; patent Application (201010187154.8) designed

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Switching method in long term evolution (LTE) communication system facing high speed railway and system thereof
  • Switching method in long term evolution (LTE) communication system facing high speed railway and system thereof
  • Switching method in long term evolution (LTE) communication system facing high speed railway and system thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0050] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0051] figure 1 It is a schematic diagram of an application environment of a high-speed railway-oriented LTE system according to an embodiment of the present invention. Among them, a train relay station (Train Relay Station, TRS) is installed in the car to form a two-layer communication system from the terminal in the car to the TRS, and then from the TRS to the base station on the road. The TRS replaces a large number of users to initiate the handover to avoid a large number of handovers at the same time. Signaling causes network congestion. Antennas are installed at the front and r...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

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.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04W36/00H04W36/08H04W36/30
Inventor 李娟田霖周一青石晶林
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap