基于路由生存时间的Ad Hoc QoS路由

提出了一种针对Ad Hoc网络中视频业务的QoS路由机制（QRPFVS）．QRPFVS的贡献在于：在保证业务QoS要求的基础上，选择路由预测生存时间最长的路由，以减少路由重建的次数；通过在断路之前找到新的路由来减少数据分组的丢失率，保证视频业务的实时流畅；引入服务优先级的方法提高了视频业务的完成率．采用OPNET对QRPFVS、QS-AODV和CMMBCR进行了仿真，结果表明QRPFVS在业务完成率、分组丢失率等性能方面具有较大的改善．

Research on Ad Hoc QoS Routing Based on Existing Time

This paper proposes a QoS routing protocol for video services in Ad Hoc networks,namely QRPFVS.QRPFVS has the following advantages over traditional QoS routings:the route of the longest routing existing time of estimate is chosen to reduce the route rebuilt times.for reducing the lost ratio of data packets,the new route just before the break of the old route is rebuild,service priori- ty is adopted to increase the service complete ratio.Using OPNET,and comparing with existing QoS routings,such as QS-AODV and CMMBCR,the simulation shows that QRPFVS has a lower lost ra- tio of data packets on the base of the same end-to-end delay,and a higher service complete ratio with the same service accepting radio.