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中文摘要：
GSM-R作为铁路通信调度数据的承载网络,其网络的稳定和畅通对于保证铁路运输安全、高效运行至关重要。由于铁路沿线的桥梁、隧道、边坡、路堑等各种复杂传输环境,使得GSM-R网络中的基站等网元易遭受自然灾害的影响。针对GSM-R基站设施毁坏或终端处于信号覆盖盲区的情形,在GSM-R系统中引入多跳组网方式,并提出一种适用于GSM-R应急多跳网络的分簇算法。性能分析和仿真结果表明：在终端数目较多以及终端移动性较高的情形下,文中的分簇算法具有优良的簇维护开销和网络稳定度性能,适用于铁路应急通信需求。
英文摘要：
Being a network for transmitting railway communication dispatching data,the stability and reliability of the GSM-R network are critical to safe and efficient operation of railways.In view of the fact that GSM-R base stations may be destroyed or some terminals may be found to be in blind zones,the multi-hop network mode is introduced and the clustering algorithm appropriate for the GSM-R emergency multi-hop network is proposed.Analysis and simulation results reveal that the clustering algorithm can meet the railway requirements for emergency communication since it is good in respect of clustering maintenance costs and network stability in the case that terminals are of a large namber at high moving speeds.
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