Dissertation > Excellent graduate degree dissertation topics show

Research and Application on Interface Protocol of Train-Earth Wireless Data Transmission

Author: YeXiaoLong
Tutor: SunBin；JinXinYu
School: Zhejiang University
Course: Electronics and Communication Engineering
Keywords: Comprehensive inspection vehicle Vehicle to communicate 3G WLAN Transmission interface
CLC: TN929.5
Type: Master's thesis
Year: 2012
Downloads: 23
Quote: 0
Read: Download Dissertation

Abstract


With the rapid development of China's high-speed rail, people are increasingly concerned about the safety and reliability of the train running. Comprehensive inspection vehicle is the most effective, the most important tool to protect the safety of trains, which integrates multiple subsystems of the wheel-rail track, catenary, communication, signal detection, the underlying system responsible for the train to run over 200 The technical parameters of measurement. If the ground system is capable of real-time access to the results of these tests will be able to train real-time monitoring and remote fault diagnosis, actual data provide better support for train scheduling decisions, avoid train accidents. However, due to the detection complex business type, and the large amount of data, existing vehicles to communicate can not effectively accomplish the real-time transmission of the car business data, while the use of the train by the station manually punch transmission causing ground processing center is unable to timely security risks found in the railway system. Vehicle to transmit data for comprehensive detection of vehicles in business, first proposed a combination of wireless transmission of 3G networks and WLAN networks. The introduction of 3G system transmission performance certainly improved, but by the high-speed train running, a lot of unexpected emergency business still can not get effective transmission. Therefore, the goal of this paper is the transmission for various business needs, and propose a car data transfer interface protocol. Business data analysis, classification, processing, and use different priority queuing policy to achieve the transmission of different business needs, in order to optimize the quality of service of the transmission system. Thus, the entire communication system of the car to achieve the core and key technologies for the efficient transmission of business data transfer interface protocol. Firstly, the feasibility of the 3G technology used in cars to communicate system analysis and argumentation. Combined with the technical characteristics of the WLAN network, the proposed combination of 3G and WLAN line - point-car wireless transmission. By WLAN 3G network responsible for the the lightweight business data \But through the analysis of the actual performance of the network transmission testing, network transmission bandwidth in high-speed mobile environment is still the bottleneck of the car the system. To the limited network bandwidth to meet transmission needs of different businesses, and improve system reliability and efficiency, this paper presents the design based on the data transmission interface of the car business. First, the interface protocol classified conversion of the actual database for each business unit specific database table structure design. The different priority adjustment strategy proposed by the analysis of the characteristics of each business, for many types of business, to optimize the transmission performance of the system. 0-1 integer programming ideas at the scene by the station to select the transmission task, in the case of limited dwell time for the system to select the optimal transmission task. Simultaneous transmission interface into a compression process, and further improve the transmission efficiency of the system. Finally, in the actual environment, the data transfer interface protocol is the actual test. By statistical analysis of a large number of test results, indicating that the data transmission interface to meet the transmission requirements of the different car business. Prove the effectiveness and necessity of the data transfer interface. At present, the transmission interface has been successfully applied to the Ministry of Railways high-speed integrated inspection car, reliable run.

Related Dissertations

  1. The Effects of Transmission Network Faults on the WCDMA Mobile Network,TN929.533
  2. The Study and Design of Dual-band Printed Antennas,TN822
  3. TD-SCDMA and WLAN Network Convergence Technology Research,TN929.5
  4. The Research on the Vertical Handoff Algorithms in Heterogeneous Wireless Networks,TN929.5
  5. An Improvement Protocol of WLAN MAC Based on Fuzzy Logic Control,TN925.93
  6. Visual Design of 3G Smart Phone Interface,TN929.53
  7. Design and Implementation of Intelligent Transportation Video Monitoring System Based on 3G Network,TP391.41
  8. The Research on Application of 3G Based Mobile Learning to University,G434
  9. Wireless video surveillance system implementations in WCDMA networks,TP277
  10. Planning and Design of Hybrid Wireless Optical Fiber Broadband Access Network,TN915.6
  11. The Study of 3G Service Planning and Network Implementation in China Mobile Ningxia Branch,TN929.5
  12. LTE-WLAN switch interconnection protocol for heterogeneous systems,TN925.93
  13. Centralized WLAN Tunnel Management System Design and Implementation,TN925.93
  14. Zhaoqing customized mobile terminals Marketing Strategy,F626
  15. Wireless city network construction mainstream technology research,TN92
  16. WLAN planning and implementation of Shaoxing College of Arts and Sciences,TN925.93
  17. Design and Implementation of 3G Video Transmission System Based on the Load Balance,TN919.8
  18. Study on the Vehicle-Mounted Wireless Video Monitoring System,U463.6
  19. 3G mobile e-commerce platform user interface design research,J524
  20. Study and Design on Marine Video Monitoring System Based on S3C6410,TP274

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Mobile Communications
© 2012 www.DissertationTopic.Net  Mobile