不同模式及编码条件下GSM-R短消息传输特性对比研究  

Comparative study of GSM-R Short Message Transmission Characteristics in Different Mode and Coding Conditions

作　　者：梁轶群[1] 蒋志勇[1] 周宏伟[1] 付文刚[1] 

机构地区：[1]中国铁道科学研究院通信信号研究所

出　　处：《铁道通信信号》2015年第1期45-50,共6页Railway Signalling & Communication

基　　金：GSM-R短消息传输特性及扩展应用技术研究J2013X004

摘　　要：阐述了GSM-R短消息PDU模式UCS2编码、PDU模式7bit编码,以及Text模式的实现原理,并介绍了GSM-R短消息传输特性自动化实现方法。在不同网络覆盖、不同列车运行速度级、不同短消息模式及短消息用户数据编码方式、不同短消息长度等各种条件下,对短消息传输特性进行了深入对比分析,并分析了短消息传送失败的几种典型案例,总结了不同模式及编码条件下GSM-R短消息传输特性。The paper expatiates the principle of several GSM-R short message coding modes, including PDU mode coded with UCS2, PDU mode coded with 7 bit and TEXT mode. The method of realizing the automation testing of GSM-R short message is described. In-depth comparative analysis of the transmission characteristics of short message under different conditions is made in term of transmission characteristics, including different network coverage, different train speed, and different short message mode and user data coding methods, different short message length. Several typical cases of short message transmission failure are also analyzed and the characteristics of short message transmission in different modes and coding are summarized.

关 键 词：短消息 铁路综合移动通信系统 模式 编码 成功率 延时 

分 类 号：U285.2[交通运输工程—交通信息工程及控制]