城市轨道交通专用无线集群系统互联互通方案研究
许丽金龚建生
Interoperation Scheme for Dedicated Wireless Trunking Systems in Urban Rail Transit
XU LijinGONG Jiansheng
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作者信息:武汉地铁运营有限公司， 430030， 武汉
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Affiliation:Wuhan Metro Operation Co., Ltd., 430030, Wuhan, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.20230499
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中图分类号/CLCN:U231.7
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栏目/Col:通信信号
摘要:
［目的］为满足城市轨道交通的持续发展及运营服务质量的提升需求，专用无线集群系统需支持跨线互联互通，以实现线网统一调度指挥和运营管理的目标。［方法］简述了TETRA（泛欧集群无线电）数字集群系统原理，以及专用无线集群系统互联互通业务需求。介绍了武汉轨道交通专用无线集群系统同构设备和异构设备互联互通方案。从新增设备需求、接口类型、互联互通层面、漫游通话组容量、与宽带系统的兼容性及建设成本等方面，深入对比分析了各种方案。根据SIP（会话初始协议）在调度系统中的发展与应用，提出了基于SIP的线网无线统一调度系统互联互通方案。［结果及结论］基于SIP的线网无线统一调度系统互联互通方案为：在各TETRA数字集群系统或宽带系统原私有协议的基础上，按照SIP进行协议转换。将各TETRA数字集群系统或宽带系统语音控制信令转换为SIP的语音呼叫信令RFC3261，将短数据控制信令转换为SIP的短数据信令RFC3428，从而实现异构设备TETRA数字集群系统或宽带系统的全功能互联互通。该方案打破了AIRBUS(空中客车)、MOTO(摩托罗拉)等国外厂家不开放接口的技术封锁，可解决武汉轨道交通线路多品牌TETRA数字集群系统的跨线运营问题。
Abstracts:
［Objective］ In order to meet the requirements for urban rail transit continuous development and metro operation service quality improvement, dedicated wireless trunking systems must achieve interoperation across lines to realize unified network-side dispatching and operational management. ［Method］ The principle of the TETRA (terrestrial trunked radio) digital trunking system is briefly described, along with the interoperation business requirements of the dedicated wireless trunking system. The interoperation schemes for homogeneous and heterogeneous devices in Wuhan Rail Transit dedicated wireless trunking system are introduced. Various schemes are compared and analyzed in depth in terms of additional equipment requirements, interface types, interoperation levels, roaming talk group capacity, compatibility with broadband systems, and construction costs. Based on the development and application of SIP (session initiation protocol) in dispatching systems, an interoperation scheme for a network-wide unified wireless dispatching system based on SIP protocol is proposed. ［Result & Conclusion］ The above-mentioned interoperation scheme based on SIP involves the SIP-based protocol conversion for each TETRA digital trunking system or the broadband system original proprietary protocol. The voice control signaling of each TETRA digital trunking system or broadband system is converted into SIP voice call signaling according to RFC3261, and the short data control signaling is converted into SIP short data signaling according to RFC3428, thereby enabling full-featured interoperation of heterogeneous TETRA digital trunking systems or broadband systems. This scheme breaks the technical barriers imposed by foreign manufacturers such as AIRBUS and Motorola who do not open interfaces and effectively resolves the issue of cross-line operation across multi-brand TETRA digital trunking system in Wuhan Rail Transit.
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