System for realizing double mode vehicular terminal and method thereof

A technology of a vehicle-mounted terminal and an implementation method, applied in the directions of access restriction, electrical components, wireless communication, etc., can solve the problems of not providing service transmission, waste of wireless resources, and signal transmission reliability to be improved, so as to improve transmission reliability, The effect of making full use of and improving reliability

Inactive Publication Date: 2009-12-30
BEIJING JIAOTONG UNIV
View PDF0 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current main function of this interleaving site coverage method is to improve the reliability of wireless coverage, but it also brings some problems, for example: in the normal working mode of the active layer network, the backup layer network waste
On the other hand, the wireless coverage overlapping area of ​​base stations on the main layer (that is, the weak field area) is a frequent area where train control data transmission is interrupted, and the reliability of signal transmission needs to be improved.

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
  • System for realizing double mode vehicular terminal and method thereof
  • System for realizing double mode vehicular terminal and method thereof
  • System for realizing double mode vehicular terminal and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1 refers to figure 1 and figure 2 The dual-mode vehicle-mounted terminal realization system includes: a ground control center; a mobile switching center (MSC); a base station control center (BSC); a main layer network and a backup layer network; a vehicle-mounted GSM-R communication unit; Train control unit. The vehicle-mounted GSM-R communication unit of the locomotive platform is directly installed on the locomotive platform, and it consists of a processing unit and two GSM-R mobile transceivers, namely a vehicle-mounted mobile terminal 1 (MS1) and a vehicle-mounted mobile terminal 2 (MS1). 2 ), the processing unit is connected to the train control unit of the locomotive station through a data transmission line; the MS 1 and MS 2 Different SIM cards are installed respectively, among them, MS 1 and MS 2 Both the cell initialization selection C1 algorithm module and the cell reselection C2 algorithm module are built-in in the SIM card, and the parameter...

Embodiment 2

[0040] Embodiment 2 Based on the method for realizing the dual-mode vehicle-mounted terminal under the GSM-R interleaving active-standby double-layer network mode, the wireless redundant coverage of the interleaved site is adopted. In the redundant coverage of the interleaved site, the mobile terminal of the locomotive station adopts a dual-mode mode, and the The mobile terminal of the locomotive station is connected to the main layer network and the backup layer network respectively at the same time, and switches on the same layer, and selects the transmission signal channel according to the level and quality performance of the received signal, so as to solve the original problem of cell switching in the main layer When , the weak field area on the overlapping area between the adjacent base stations of the two active layers easily leads to the problem of communication interruption.

[0041] Such as figure 2 As shown, the on-board GSM-R communication unit of the locomotive us...

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 system for realizing a double mode vehicular terminal and a method thereof, which are combined with the characteristic of a cross-site coverage way. A mobile terminal of a locomotive platform adopts a double mode way, and is connected with a main layer network and a back layer network at the same time respectively, and selects a better signal transmission channel according to level, quality and other performances of a received signal so as to achieve the aims of sufficiently using wireless resources of the double-layer network and improving the transmission reliability, thereby solving the problem that a weak field on an overlap region between two adjacent base stations in the main layer easily causes communication interruption when cell switching is carried out in the main layer in the prior art.

Description

technical field [0001] The invention relates to a method for realizing a dual-mode vehicle-mounted terminal, in particular to a method for realizing a dual-mode vehicle-mounted terminal based on a GSM-R interweaving active and standby double-layer network mode, and belongs to the field of digital dedicated mobile communication for high-speed passenger dedicated lines GSM-R railways. Background technique [0002] GSM-R (GSM for Railways) system is a comprehensive dedicated digital mobile communication system specially designed for railway communication. It is based on the advanced voice call functions (such as group call, broadcast call), multi-priority preemption and forced demolition services of the GSM Phase2+ standard protocol, and adds functions such as location-based addressing and function addressing, and is suitable for railway communication special It is the need of railway special dispatching communication. The GSM-R system mainly provides voice communication funct...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/08H04W48/18H04W88/06
Inventor 吴昊陈霞郭辉钟章队朱刚
Owner BEIJING JIAOTONG UNIV
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