基于数据速率匹配的编码感知多路径路由协议

Coding-aware multipath routing protocol based on rate-match

针对现有编码感知多路径路由协议(network coding-aware multipath routing,CAMP)存在的编码机会利用不充分和网络时延较大的问题,提出了一种基于数据速率匹配的编码感知多路径路由协议(coding-aware multipath routing protocol based on rate-match,CMRPR)。在数据流分配时,充分考虑流经编码节点的数据流速率大小,使编码节点达到最大程度的数据速率匹配,提高网络编码性能;使用一种流间编码机会判断规则扩大探测范围,并通过一种反馈机制对数据速率分配做出及时调整。仿真结果表明,与CAMP协议相比,CMRPR协议提高了网络吞吐量和编码数据包的比例,降低了数据传输的平均时延。

The existing network coding-aware multi-path routing（CAMP）suffers from the problems of the inadequate of coding opportunity and large network delay.A coding-aware multipath routing protocol based on rate-match（CMRPR）is proposed to solve these problems.By taking into account the rate of the data flow through the coding node,the greatest data rate could be matching when allocate the data flow,which improves the coding performance obviously.The search scope can be expanded by using an inter-flow coding opportunity judge rule.A feedback mechanism can be used to adjust the data rate allocation in time.CMRPR outperforms CAMP in network throughput and the proportion of encoded packets,it also reducing the average latency of data transmission.