城市轨道交通数字集群通信系统越区切换方案设计

Urban Rail Transit digital trunking communication system design handoff

数字集群通信系统为城市轨道交通运营企业提供行车指挥调度、控制信息传输等服务,是调度人员与列车司机之间唯一的专用无线通信手段,越区切换性能直接影响到运营效率和行车安全。文章以城市轨道交通为系统应用场景,基于无线通信理论和网络技术,结合数字集群通信系统的基本特点,通过深入分析越区切换过程及其影响因素,对城市轨道交通数字集群通信系统越区切换方案进行设计,并结合广州市轨道交通数字集群通信系统的建设和维护进行测试验证。

The digital trunking communication system provides wireless communication servicesforcity rail transit.It is the only wireless communication means between scheduling personnel and train drivers, so the handover performances of system directly affect the operation efficiency and safety. This paper studies the handoff process and interference factorsbased on the wireless scene of city rail traffic. In order to optimize the design of the handoff schemes for city track traffic digital trunking communi-cation system. In the next step, this paper tested the handoff scheme combined with the construction and maintenance experience of Guangzhou urban rail transit digital trunking communication system.