铁路数字移动通信网络拥塞负载均衡控制方法

The Load Balancing Control Method for Digital Mobile Communication Network Congestion on a Railway

铁路数字移动通信网络在进行通信传输时,通信路径选择受到消息路由决策限制,容易造成网络拥塞。为此,本文分析了GSM-R铁路综合专用数字移动通信网络的调度通信、调度命令传递、列车控制信息传递等功能,引入BCBCA算法,实现通信网络负载均衡控制。通过介数值变化对消息路由进行动态改变,优化源路由选择协议;根据网络演化图获得最短时延可用的备选路径,综合多属性计算各条备选路径选择概率,完成消息路由决策优化,实现网络拥塞负载的均衡控制。实验结果表明,所提方法可有效防止出现网络拥塞现象,负载均衡控制效果良好。

When the railway digital mobile communication network carries on the communication transmission,the communication path choice is restricted by the message route decision-making,which is easy to cause the network congestion.Therefore,this paper analyzes the dispatching communication,dispatching command transmission,train control information transmission and other functions of GSM-R railway integrated dedicated digital mobile communication network,and introduces BCBCA algorithm to realize the load balance control of communication network.Optimize the source routing protocol by dynamically changing the message routing through the change of intermediate value.According to the network evolution graph,the shortest available alternative paths are obtained,and the probability of each alternative path selection is calculated based on multi-attribute.The decision optimization of message routing is completed to realize the balanced control of network congestion load.The experimental results show that the proposed method can effectively prevent network congestion,and the load balancing control effect is good.