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| Research on the Fast Algorithm for GSM-R Switching for High-speed Railway |
| WU Hao, GU Yong-hao, ZHONG Zhang-dui |
| Beijing JiaotongUniversity, Beijing 100044, China |
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Abstract Research purposes:With the developmentofhigh-speed railway and passenger-dedicated railway, GSM-R digitalmobile communication system is developing fast in China. Meanwhile it brings some problems to be solved urgently because of the linear coverage plan of GSM -R, requiring frequent switching for the running train. The performance of switching has verymuch effect on system service quality and train running safety because high-speed train requires high standard forGSM-R switching. The research is done on the switching algorithms for the purpose of seeking one fast algorithm to shorten switching delay time, realize the fast and reliable switching and enhance the successful switching ratio ofGSM-R during transferringMSC section under condition ofhigh speed.
Research conclusions:A new type of fast algorithm forGSM-R switching for high-speed railway is present through research, and the analyses of the feasibility and feature of this algorithm aremade in theory. In addition, comparedwith the normal switching algorithm, the new algorithm is better in shortening switching delay time, especially the switching delay time can be reduced by 64% during transferringMSC section. This fast algorithm is very appropriate for high- speed railway.
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Received: 19 September 2008
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2009, Vol. 26 
