一种GSM-R网内抗干扰频率配置方案
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摘要
在对GSM-R系统进行无线电监测和保护过程中发现,频率规划不合理是GSM-R网内干扰的一个重要来源。为了网内减少干扰,考虑在列车异常切换的情况下,将同信道、邻道和共址约束条件进行综合约束,利用模拟退火算法使GSM-R可用的频道最大化满足相隔一个小区的频率间隔不小于400 kHz的要求。优化结果表明满足该条件的最大频道数为17个,结合网络的覆盖方式,合理的将频道进行配置,提高了组网频道利用率,增强了GSM-R系统自身抗干扰能力。
In the process of radio monitoring and protection of GSM-R system,it is found that the unreasonable frequency planning is an important source of interference in the GSM-R network.In order to reduce interference within the network,it is considered to comprehensively constrain the co-channel,adjacent channel and co-location constraints in the case of abnormal train switching.The simulated annealing algorithm is used to maximize the available channels of GSM-R network,so as to meet the requirement of frequency interval of not less than 400 kHz in one cell apart.The optimization results indicate that the maximum number of channels satisfying this condition is 17,and in combination with the coverage mode of the network by reasonably configuring the channel,the utilization rate of networking channel is improved,and the anti-interference ability of GSM-R system also enhanced.
In the process of radio monitoring and protection of GSM-R system,it is found that the unreasonable frequency planning is an important source of interference in the GSM-R network.In order to reduce interference within the network,it is considered to comprehensively constrain the co-channel,adjacent channel and co-location constraints in the case of abnormal train switching.The simulated annealing algorithm is used to maximize the available channels of GSM-R network,so as to meet the requirement of frequency interval of not less than 400 kHz in one cell apart.The optimization results indicate that the maximum number of channels satisfying this condition is 17,and in combination with the coverage mode of the network by reasonably configuring the channel,the utilization rate of networking channel is improved,and the anti-interference ability of GSM-R system also enhanced.
引文
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[3]樊华.宁安线GSM-R无线网络优化案例分析[J].上海铁道科技,2018(01):148-150.FAN Hua.Case Study of GSM-R Wireless Network Optimization on Ning’an Line[J].Shanghai Railway Technology,2018(01):148-150.
[4]符凯明.GSM-R系统干扰检测分析及实现[D].电子科技大学,2018:6-9.FU Kai-ming.GSM-R System Interference Detection Analysis and Implementation[D].University of Electronic Science and Technology,2018:6-9.
[5]李少杰.GSM-R系统无线网络频率规划方法的研究及应用[D].北京:北京交通大学,2008:31-36.LI Shao-jie.Research and Application of GSM-R System Wireless Network Frequency Planning Method[D].Beijing:Beijing Jiaotong University,2008:31-36.
[6]LU Li-wei,FAN Rong-shuang.Simulated Annealing Algorithm in solving Frequency Assignment Problem[C]//2010 3rd International Conference on Advanced Computer Theory and Engineering(ICACTE).Chengdu,China:IEEE,2010:361-364.
[7]于江,贺赛飞,张凤霞,等.模拟退火算法在战场频率资源分配中的应用[J].中国无线电,2018(01):34-38.YU Jiang,HE Sai-fei,ZHANG Feng-xia,et al.Application of Simulated Annealing Algorithm in Battlefield Frequency Resource Allocation[J].China Radio,2018(01):34-38.
[8]张瑞霞.GSM-R系统干扰问题及优化方法研究[D].兰州交通大学,2015:48-51.ZHANG Rui-xia.Research on GSM-R System Interference Problem and Optimization Method[D].Lanzhou Jiaotong University,2015:48-51.
[9]国家铁路局.TB 10088-2015,《铁路数字移动通信系统(GSM-R)设计规范》[S].北京:中国铁道出版社,2015.National Railway Administration.TB 10088-2015,Design Specification for Railway Digital Mobile Telecommunications System(GSM-R)[S].Beijing:China Railway Publishing House,2015.
[10]沈俊毅.GSM-R核心网冗余实施方案研究[J].铁路通信信号工程技术,2017,14(02):39-41.SHEN Jun-yi.Research on Redundant Implementation Scheme of GSM-R Core Network[J].Railway Communication Signal Engineering Technology,2017,14(02):39-41.
[11]周宇晖.GSM-R无线网络冗余架构关键技术的研究[J].铁路通信信号工程技术,2016,13(02):24-28.ZHOU Yu-hui.Research on Key Technologies of GSM-RWireless Network Redundancy Architecture[J].Railway Communication Signal Engineering Technology,2016,13(02):24-28.
[12]钟章队,李旭,蒋文怡.铁路GSM-R数字移动通信系统[M].北京:中国铁道出版社,2016:17-21.ZHONG Zhang-dui,LI Xu,JIANG Wen-yi.Railway GSM-R digital mobile communication system[M].Beijing:China Railway Publishing House,2016:17-21.