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浙江大学学报(工学版)
J4  2012, Vol. 46 Issue (9): 1553-1559    DOI: 10.3785/j.issn.1008-973X.2012.09.001
无线电电子学、电信技术     
高铁环境中满意通信概率模型及切换算法研究
孙斌,冯庆坤, 金心宇, 吴端坡
浙江大学 信息与电子工程学系,浙江 杭州 310027
Handoff algorithm and PoSC model
under high-speed railway environment
SUN Bin, FENG Qing-kun, JIN Xin-yu, WU Duan-po
School of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China
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摘要：

针对通信链路连通情况下,由于误码率过高铁路专用数字移动通信系统（GSM-R）的服务质量（QoS）不满足通信需求的问题,通过对GSM-R路测数据的挖掘分析,研究了接收信号电平、同频干扰和列车运行速度这3个关键参数,提出满意通信概率模型,进而设计基于该模型的切换算法,以降低平均切换次数并尽可能地保证较高的QoS.经建模仿真,表明该算法在获得满意通信的同时,切换次数可以达到1,切换延迟小,切换位置接近两基站中间点,明显优于传统的基于电平强度的切换算法.
Abstract:

To maintain high quality of service （QoS）of global system for mobile communications for railways（GSM-R）under the situation of high bit error rate （BER）during the connection of network,  a probability of satisfied communication （PoSC) model was proposed based on the data mining of GSM-R drive test data. Three key factors were considered: received signal strength, cochannel interference, and velocity of train. Then the handoff decision algorithm based on PoSC model was designed, in order to reduce the number of handoffs and maintain high QoS.Numerical results demonstrate the feasibility of the proposed algorithm. Besides the satisfied communication, the number of handoffs can be as small as 1, the handoff delay is low, and the handoff location is near the center of the two base stations. Comparison with the traditional strength-based handoff algorithm shows that the proposed system performs less handoffs at the same handoff distance.
出版日期: 2012-09-01
:  U 285  
基金资助:

国家“８６３”高技术研究发展计划重点资助项目（29AA110301).
作者简介: 孙斌（1971-）,女,博士,副教授,硕导,主要研究领域为高速铁路通信系统及信号处理.E-mail:shg@zju.edu.cn
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引用本文:

孙斌,冯庆坤, 金心宇, 吴端坡. 高铁环境中满意通信概率模型及切换算法研究[J]. J4, 2012, 46(9): 1553-1559.

SUN Bin, FENG Qing-kun, JIN Xin-yu, WU Duan-po. Handoff algorithm and PoSC model
under high-speed railway environment. J4, 2012, 46(9): 1553-1559.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2012.09.001    或    http://www.zjujournals.com/eng/CN/Y2012/V46/I9/1553

［1］ 吴昊,谷勇浩,钟章队.一种应用于高速铁路的GSMR快速切换算法研究［J］.铁道工程学报,2009(1): 92-96．
WU Hao, GU Yonghao, ZHONG Zhangdui . Research on the fast algorithm for GSMR Switching for highspeed railway［J］ .Journal of Railway Engineering Society, 2009(1): 92-96．
［2］ 向征, 方旭明, 王兵. GSMR网中一种基于中继站辅助的切换策略 ［J］. 铁道学报, 2010, 32(5): 47-52．
XIANG Zheng , FANG Xuming, WANG Bing. A relayassisted handover scheme in GSMR network［J］ . Journal of The China Railway Society , 2010, 32(5): 47-52．
［3］ 李鉴庭. GSMR系统越区切换方法研究［D］. 杭州: 浙江大学, 2011．
LI Jianting. Research on handover method in GSMR［D］.Hangzhou: Zhejiang University, 2011.
［4］ 汪浩. 高速铁路环境下GSMR无线覆盖规划的研究［D］. 北京: 北京交通大学, 2009．
WANG Hao. Research on the radio coverage planning of GSMR in highspeed railway environment［D］. Beijing: Beijing Jiaotong University, 2009.
［5］ ZHANG N, HOLTZAMAN J M. Analysis of handoff algorithms using both absolute and relative measurements［J］. IEEE Transactions on Vehicular Technology, 1996, 45: 174-179．
［6］ GUDMUNDSON M. Correlation model for shadow fading in mobile radio systems［J］.Electronnics Letters, 1991,27(23): 2145-2146．
［7］ ITOH K I, WATANABE S, SHIH J S ,et al. Performance of handoff algorithm based on distance and RSSI measurements［J］. IEEE Transactions on Vehicular Technology. 2002,51: 1460-1468．
［8］ 王蓓. 青藏铁路GSMR通信系统中干扰问题的分析与研究［D］. 北京: 北京交通大学, 2008．
WANG Bei. Research and Analysis on the Interference of GSMR in the QinghaiTibet railway［D］. Peking: Beijing Jiaotong University, 2008．
［9］ 解坤. 高速移动通信中的多普勒频移问题［D］. 北京: 北京交通大学, 2009．
XIE Kun. Doppler shift problem in Highspeed mobile communications［D］. Bejing: Beijing Jiaotong University, 2009.
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