基于外层空间的无线传感器网络组播路由协议研究*

研究航天器部署在火星表面的无线传感器节点，首次提出了外层空间无线传感器网络(outer space wireless sensor network，OSWSN)的概念，指出该网络的节点以自组织方式组网。基于已有的地面无线传感器网络经典组播路由协议，结合无线自组织网络组播协议建树思想，设计应用于外层空间无线传感器网络的OSWSNMP（OSWSN multicast protocol）。与已有的MAODV组播路由协议以及应用于地面无线传感器网络的EMRS组播路由协议进行比较，在NS2上搭建OSWSNMP仿真环

Research on multicast routing protocol in outer space wireless sensor network

By researching in wireless sensors networks whose nodes deployed in the surface of Mars by spacecraft, this paper firstly proposed the concept of outer space wireless sensor network(OSWSN), and pointed out its nodes were composed by self-organizing way. After researching the multicast protocols used by ground wireless sensor networks and basing the thought how the self-organizing networks build multicast tree, proposed a new multicast protocol named OSWSNMP for space wireless sensor network. At last, after using NS2 simulation tool to set OSWSNMP simulation environment, compared OSWSNMP with some other multiple routing protocols.The simulation results indicate that OSWSNMP is better than MAODV and EMRS with respect to loss ratio, network delay and energy loss.