多接口无线Mesh网络多径及负载均衡路由协议

Multipath and Load Balancing Routing Protocol in Multi-radio Wireless Mesh Network

无线Mesh网络作为一种自组织、自配置的新型宽带网络,正受到越来越多的关注。为了提高网络端到端的性能,AODV-DM多径路由协议提出寻找干扰不相交多径,但仍存在可寻率低,源节点和目的节点竞争信道的问题。利用多接口无线Mesh网络干扰小的优点,提出一种寻找干扰不相交多径路由协议(MR-AODV-DM),该协议能够解决AODV-DM协议存在的上述问题。此外,还提出一种结合负载均衡的期望传输次数的改进路由判据(mETX),该判据在反映无线Mesh网络链路状态的同时起到负载均衡的作用。

As one of the new self-organizing and self-configuration broadband networks, wireless mesh networks are being increasingly attractive. To enhance the end-to-to performance of networks, the AODV-DM routing algorithm was proposed to find decoupled multipath. However, AODV-DM has low probability of searching out multiple paths, and both of source node and destination node in the multipath can＇t avoid channel contention. The MR-AODV-DM routing algorithm was proposed to solve the two problems of AODV-DM and enhance end-to-end performances. In addition, a modification of ETX metric combined with load-balancing was proposed. The metric proposed not only reflects the link state of wireless mesh network but also makes the load-balancing.