Ad Hoc网络中的QoS-Aware多目标优化路由协议

对Ad hoc网络中的QoS保证进行研究,针对现有的QoS路由协议没有考虑节点负荷、节点碰撞等本地信息,提出了一个在Ad hoc网络中提供QoS的路由协议——QoS-Aware多目标优化路由协议(QMOR).该协议把QoS请求———带宽作为接入控制的参数,路由发现和路由维护算法是DSR协议的扩展,在目的节点利用多目标优化算法进行选路,算法的优化参数包括路径时延、缓冲区中已存包的长度和重传数目.通过仿真,结果显示了QMOR协议无论在静态网络和动态网络,都有比DSR协议更好的性能.

QoS-Aware Multi-objective Optimization Routing Protocol in Ad Hoc Networks

The issue of providing QoS in Ad hoc networks was studied. Aiming at existing QoS routing protocols taking no account of the local information such as node load and node collision, the QMOR (QoS-Aware multi-objective optimization routing) protocol is proposed to provide QoS in Ad hoc network, which takes QoS requirement-bandwidth as the parameter of access control, and the algorithm of route discovery/maintenance is just extension of DSR protocol. The routing selection is carried out at the destination node with multi-objective optimization algorithm of which the optimization parameters include path delay, the length of existing packets in buffer and number of retransmissions. Results of simulation showed that the QMOR protocol has better performance than DSR protocol in either static topology or dynamic topology.