基于干扰感知的无线自组网多播机制

在采用网络编码的无线自组网多播场景中,为了有效地克服节点密度较大时干扰对多播整体性能的影响,提出了一种衡量路径干扰情况的路由度量标准。基于该度量标准,对网络编码机会和节点间干扰避免进行了均衡处理,构建出一种基于部分网络编码的无线自组网干扰感知多播路由机制。仿真结果表明,该机制在能耗、延时和吞吐量等性能方面均优于基于传统网络编码的多播方案,因此特别适用于节点密度较大的场合。

Interference awareness based multicast scheme in wireless Ad Hoc networks

For multicast scenarios using network coding in Wireless Ad Hoc NETworks （WANET）, in order to overcome the influence of interference on multicast's overall performance effectively when the node density is very large, a routing metric to measure the interference of the path was proposed. Using the metric, a Partial Network Coding based Interference Aware (PNCIA) multicast routing scheme was built to reach the tradeoff between the network coding opportunities and interference avoidance among nodes. The simulation shows that the proposed scheme can outperform traditional network coding based multicast scheme in terms of energy consumption, delay and throughput, thus it is especially suitable for those scenarios with large node density.