地铁高可靠LTE无线网络的设计及应用

Design and Application of Metro High-reliability Wireless Network Based on LTE Technology

针对地铁行业车地无线通信系统的高可靠性要求,基于TD-LTE技术特点,提出了一种使用TD-LTE技术实现双无线通信网的设计方案,即在无线接入层、数据传输层、核心网和业务平台均使用A/B双网相互冗余备份。针对双无线通信网的设计方案的关键技术和难点进行了详细说明,提出了双网的系统架构,分析了双网的详细的实现方案,介绍了双网的系统指标估算。最后,通过试验线路的测试验证,证明了A/B网架构下的TD-LTE无线网络的高可靠性以及在地铁无线通信领域应用的高可用性。

In view of high reliability requirements of the Train-ground wireless communication system, this paper puts forward a design scheme of using TD-LTE technology to implement dual-radio communication network based on TD-LTE technical characteristics, namely using A/B dual-network redundancy in wireless access layer, data layer, core network and service platforms. The key technologies and difficulties of dual-radio communication network design scheme are introduced in detail. The system architecture of dual network is proposed, the detailed implementation scheme of dual network is analyzed and the system specification estimation of dual network is introduced. Finally, the metro line test proves the high reliability of TD-LTE wireless network under A/B network architecture and high availability in metro wireless communications applications.