完全网络编码可用以解决机会主义路由中空间重用及重复报文问题,但增大了报文平均延迟,且报文数据流表现出突发性特征,不利于目标节点解码.本文针对移动自组网提出基于部分网络编码的机会主义路由OR-PNC,采用任意长度部分网络编码方式对报文编码.实验表明OR-PNC可有效降低报文平均延迟达26%,目标节点应用层原始报文到达流更均衡.

Based on full network coding,opportunistic routing can be applied to solve the problem of space reuse and redundant packet copies in mobile ad hoc networks.Large average delay and bursty arrival flow of packets make the routing defficient.An opportunistic routing based on partial network coding (OR-PNC) is proposed in this paper to encode packets using code vectors with variable length.Experimental results show that OR-PNC can effectively decrease packet average delay by 26% at most and make the arrival packet flow at destination nodes more smoothly.