论文部分内容阅读
随着网络规模持续扩大和新业务不断增长,用户对网络的服务质量(Quality of Service,QoS)提出了更高的要求.用户数量增加、网络规模复杂、网络安全性差等因素使得网络元素(节点或链路)更加容易失效,从而导致重路由发生率增高.本文在描述网络模型、用户需求以及满意度计算方法的基础上,根据带宽与信任值设计启发式函数,提出了一种支持QoS与信任值的启发式重路由机制(QoS and Trust value based heuristic ReRouting,QTRR).仿真结果表明,当重路由条件触发时,本机制能够快速建立一条可信且满足QoS需求的重路由路径.
With the continuous expansion of network scale and new business growth, users have set higher requirements on the quality of service (QoS) of the network.As the number of users increases, the network size is complex and network security is poor, network elements (nodes Or link) is more likely to fail, resulting in a higher incidence of rerouting.This paper describes the network model, user needs and satisfaction based on the calculation method, based on the bandwidth and trust value design heuristic function, a support for QoS and QoS and Trust value based heuristic rerouting (QTRR). Simulation results show that this mechanism can quickly establish a rerouting path that is credible and satisfies the QoS requirements when rerouting conditions are triggered.