基于多径TCP的5G聚合路由实现方案

Implementation Scheme of 5G Aggregated Routing Based on Multi-path TCP

随着轨道交通应用中的旅客信息系统和车载视频监控系统等业务的信息内容日益丰富,乘客上网等大数据量的通信需求越来越高,需要接入运营商的公共互联网来提供服务。虽然5G通信网络能够提供大带宽和高实时的无线通信,但列车在高速运行时途经区域的基站信号不佳或在基站间快速漫游,会造成车地通信的接入带宽不稳定甚至中断,因而需要多个5G链路进行聚合来提供带宽扩展和链路备份功能。多个5G链路的带宽管理和负载分配方法会直接影响车地通信的可靠性和带宽,因此为保障车地通信的传输性能,本文提出了一种基于多径TCP的多链路管理控制方法,将多个5G连接链路聚合成一条链路为车地通信的应用层提供带宽,从而高效率利用每个5G链路的可用带宽,为车地通信提供高可靠大带宽通信通道。

In rail transit applications,with the increasing communication demand of large data such as passenger information system,on-board video monitoring system,and passenger internet access,which require large data volume for communication,need to be connected to the operator’s public internet to provide services.Although 5G communication networks can provide large bandwidth and high real-time wireless communication,poor signals from base stations in the train passing area or rapid roaming between base stations during high-speed operation of trains can cause unstable or even interrupted access bandwidth of vehicle-to-ground communication.Therefore,multiple 5G links are needed for aggregation to provide bandwidth expansion and link backup functions.The bandwidth management and load distribution methods of multiple 5G links will directly affect the reliability and bandwidth of the vehicle-to-ground communication.To ensure the transmission performance,this paper proposes a multi-link management and control method based on multi-path TCP to aggregate multiple 5G links into one link to provide bandwidth for the application layer of vehicle-to-ground communication,which can efficiently use the available bandwidth of each 5G link and offer a highly reliable and wide bandwidth communication channel for vehicle-to-ground communication.