煤矿网络传输层平台的环间传输方法

Inter-ring Transmission Method in Mine Network Transmission Layer Platform

在分析煤矿通信技术发展需求的基础上,讨论了作为数据传送载体的煤矿下一代网络传输层平台MNGN-TLP的网络拓扑结构及组成以及MNGN全局拓扑图谱的建立机制,研究了多环互连的MNGN-TLP中的环间传输方法.为了改善其跨环传输性能,提出一种新的近似松散路由的跨环传输算法,通过在数据帧中按倒序方式实时记录和修正当前分组到达目标结点必须经过的所有子环的环标识号,将数据准确传送到目标结点.在NS2环境中建立了MNGN-TLP跨环传输平台,实现了改进的跨环传输算法.结果表明:采用该算法,跨环传输的分组能够正确到达目标结点,监测监控数据的跨环转发平均延时仅600μs,语音数据的跨环转发平均延时为6.40ms,满足煤矿安全生产的实时性要求.

Based on the development requirements of mine communication technology,the network topology and composition of mine next generation network-transmission layer platform（MNGN-TLP）,as well as the formation of MNGN global topology pattern were discussed.The inter-ring transmission method of multi-ring connected MNGN-TLP was studied.In order to improve the inter-ring transmission performance,a novel semi-loose routing algorithm was designed for inter-ring transmission.When a data frame is in transmission,the sub-ring labels of all the must-passing sub-rings are recorded and modified in reverse order in the frame simultaneously,and reach destination successfully.The simulation platform for inter-ring transmission in MNGN-TLP platform was built up in NS2environment for validation,with the proposed inter-ring transmission algorithm implemented.The results show that the packets transmitted among rings can reach the destination correctly with small delay.The average delay of forwarding supervision data is only 600μs and the average delay of forwarding toning data is 6.4ms,which can meet the requirement of mine safety manufacture.