AdHoc网络QoS多径路由协议的研究

QoS路由是提供QoS保证的一种重要手段,但大多数QoS路由是建立在单径的基础上,并没有充分利用Ad Hoc网络资源.文中提出了一种多径QoS路由协议QMPDSR.该协议主要考虑带宽和时延的约束来选择多条QoS路由.当QoS业务到达时,利用一条或多条路径同时传输QoS业务.实验表明,QMPDSR协议提高了分组投递率,降低了时延,路由开销的增加也不明显.

Research on QoS Based Multiple Path Routing Protocols in Ad Hoc Networks

With the development of Ad Hoc networks,it is more and more important to provide QoS gua-rantee for multimedia application.Although QoS based routing is an available method to provide QoS guarantee,most of present QoS based routing are based on single path,which do not take full advantage of resource of Ad Hoc networks.Thus,on the base of MPDSR,a QoS-based multiple path rou-ting protocol named QMPDSR is put forward.QMPDSR can find several paths providing QoS guarantee.Also,it can disassemble QoS demands to transmit application data stream using different node disjointed path simultaneously.Simulation shows that QMPDSR protocol is better than QoS MSR.Its packet delivery ratio is higher,time delay is lower,even the increased routing spending caused is not outstanding.