Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

CTCS-3 business oriented GSM-R fast handoff method

A technology of CTCS-3 and GSM-R, which is applied in the field of train communication, can solve the problems of frequent GSM-R cell handover, vehicle communication module switching, and fast train running speed, so as to reduce protection time and network overlapping coverage area, reducing the probability of communication interruption, and improving the handover success rate

Inactive Publication Date: 2010-07-14
BEIJING JIAOTONG UNIV
View PDF0 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the CTCS-3 service, the train runs at a fast speed, and the GSM-R cell handover is frequent. Modules and network channel resources are in an extremely busy state, and are affected by the wireless environment, often causing the vehicle communication module to switch to a non-ideal current cell, resulting in communication interruption

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
  • CTCS-3 business oriented GSM-R fast handoff method
  • CTCS-3 business oriented GSM-R fast handoff method
  • CTCS-3 business oriented GSM-R fast handoff method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The present invention will be further described below in conjunction with accompanying drawing pair and specific embodiment;

[0030] figure 1 Taking the single-network interleaved redundant coverage mode as an example, it shows the working principle of GSM-R handover when the train is running on the railway line covered by GSM-R. The train is currently under the coverage of cell A. There are 4 adjacent cells of cell A, namely cell B, cell C, cell D, and cell E.

[0031] Taking the train running in the upward direction as an example, when the train runs to a position near the switching critical point 1, the uplink and downlink level signals of the on-board communication module of the train will decrease, so the network will judge by the algorithm and switch it to the adjacent signal. A strong neighborhood.

[0032] According to the working principle of GSM-R and the actual running status of the train, the vehicle-mounted communication module can only be cut into cell ...

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 discloses a CTCS-3 business oriented GSM-R fast handoff method, which relates to the technical field of train communication, and comprises the steps: firstly, determining the running direction of a train; defining two switch-in channels according to the running direction of the train, wherein one channel is a main channel, and the other channel is a standby channel; and selecting one of the main switch-in channel and the standby switch-in channel as a switch-in channel to achieve the switching, and implementing handoff switching by using the standby traditional PBGT algorithm when the running direction of the train can not be determined. The method omits the measurement and decision process of handoff switching, reduces the protection time required by the switching process and a network overlapping coverage area, saves network resources, greatly improves the switching success rate of a CTCS-3 mobile station when the train runs at a high speed, and also greatly reduces the communication interruption probability of CTCS-3 business.

Description

technical field [0001] The invention belongs to the technical field of train communication in a CTCS-3 train control system, and relates to a method for realizing CTCS-3 business-oriented GSM-R fast handover. Background technique [0002] In order to meet the needs of train speed increase and safe operation, and to meet the needs of different lines of graded transportation, my country has formulated the "China Train Control System CTCS (Chinese Train Control System) Development Plan". The development plan refers to the European Train Control System ETCS (European Train Control System) standard and combines the current situation and future development needs of China's train control system, and divides China's train control system into five levels from CTCS-0 to CTCS-4. Among them, CTCS-3 is suitable for trains with a speed of 300-350 kilometers per hour. CTCS-3 is a centralized train control system based on GSM-R transmission information. [0003] The GSM-R mobile communica...

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): H04W36/08
Inventor 蒋文怡钟章队朱刚丁建文武贵君
Owner BEIJING JIAOTONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com