基于TD-LTE的轨道交通集群调度系统
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摘要
传统轨道交通集群调度服务系统的峰值通信速率较低,无法实现日常调度工作中的高频次语音通信和基本视频通信。为此,采用4G TD-LTE技术、数据库连接池优化机制和I/O完成端口策略,设计一种新型调度服务系统。仿真测试结果表明,该系统能有效降低通信时延,提高并发量,可满足大容量、高速率、多媒体的现代轨道集群通信网络调度需求。
The traditional rail transit cluster dispatching service system has low peak communication rate and cannot realize the high-frequency voice communication and basic video communication in the daily dispatching. Aiming at this problem,this paper designs a new dispatching system which uses the technology of 4G Time Division Long Term Evolution( TD-LTE),optimized mechanism of database connection pool and the strategy of I/O Completion Port( IOCP). Simulation results show that this system can effectively reduce communication delay and improve concurrency. It can meet the dispatching needs of large capacity, high rate and multimedia demand of modern rail cluster communication network.
The traditional rail transit cluster dispatching service system has low peak communication rate and cannot realize the high-frequency voice communication and basic video communication in the daily dispatching. Aiming at this problem,this paper designs a new dispatching system which uses the technology of 4G Time Division Long Term Evolution( TD-LTE),optimized mechanism of database connection pool and the strategy of I/O Completion Port( IOCP). Simulation results show that this system can effectively reduce communication delay and improve concurrency. It can meet the dispatching needs of large capacity, high rate and multimedia demand of modern rail cluster communication network.
引文
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[13]马金鑫,袁丁.基于IOCP的高并发通信服务器的设计与实现[J].通信技术,2009,42(7):248-250.
[14]杜翔,雷跃明.基于IOCP的服务器端应用程序[J].计算机系统应用,2009,18(2):151-154.
[15]陈怀松,陈家琪.IOCP写服务程序时的关键问题研究[J].计算机工程与设计,2010,31(17):3793-3796.
[2]王惠琴,曹明华,高风格.TETRA在城市轨道交通无线通信系统中的应用[J].计算机工程与设计,2006,27(16):2958-2960.
[3]Chen Shanzhi,Wang Yingmin,Ma Weiguo,et al.Technical Innovations Promoting Standard Evolution:From TD-SCDM A to TD-LTE and Beyond[J].IEEE Wireless Communications,2012,19(1):60-66.
[4]Chang Pei,Chang Yongyu,Zhou Jing,et al.Interference Analysis of TD-LTE and TD-SCDMA System Coexistence[C]//Proceedings of the 2nd International Conference on Networks Security,Wireless Communications and Trusted Computing.Washington D.C.,USA:IEEE Press,2010:77-80.
[5]陈东伐.城市轨道交通通信集中告警系统的方案设计[J].城市轨道交通研究,2011,14(8):51-53.
[6]杨粹.城市轨道交通车地无线通信的应用探讨[J].中国新通信,2015(8):88-89.
[7]高彦军,马子彦,贾萍.城市轨道交通车地无线TD-LTE的实现[J].都市快轨交通,2014,27(6):9-12.
[8]孟培超,胡圣波,舒恒,等.基于ADO数据库连接池优化策略[J].计算机工程与设计,2013,34(5):1706-1710.
[9]李秉璋,吴访升,景征骏,等.NVMS中的自适应数据库连接池技术[J].计算机工程,2008,34(23):41-43.
[10]马海燕,彭宇行.基于JDBC数据库连接池的自适应管理策略研究[J].计算机应用研究,2006,23(2):57-59.
[11]Liu Fei.A Method of Design and Optimization of Database Connection Pool[C]//Proceedings of the 4th International Conference on Intelligent Human-M achine Systems and Cybernetics.Washington D.C.,USA:IEEE Press,2012:272-274.
[12]Caspi R,Altman T,Dreher K,et al.The Meta Cyc Database of M etabolic Pathw ays and Enzymes and the Bio Cyc Collection of Pathw ay/Genome Databases[J].Nucleic Acids Research,2010,42(Database Issue):459-71.
[13]马金鑫,袁丁.基于IOCP的高并发通信服务器的设计与实现[J].通信技术,2009,42(7):248-250.
[14]杜翔,雷跃明.基于IOCP的服务器端应用程序[J].计算机系统应用,2009,18(2):151-154.
[15]陈怀松,陈家琪.IOCP写服务程序时的关键问题研究[J].计算机工程与设计,2010,31(17):3793-3796.