无线传感器网络QoS路由的研究与仿真

无线传感器网络要求支持多种业务的差别服务和全网范围的资源有效利用,QoS路由是解决该问题的关键技术之一.在分析无线传感器网络QoS 路由问题的基础上,对定向扩散(Directed Diffusion,DD)进行扩展,提出了一种组合利用路径节点最小能量和最小跳数信息的分布式QoS 路由算法,并建立了仿真模型.仿真结果表明,与传统DD比较,网络生存期可提高500%;不同比例的混合业务模式下,可很好的支持不同业务的资源需求分配,达到全网能耗均衡.

Study and Simulation of QoS2Based Routing for Wireless Sensor Networks

QoS routing is of the key technology to provide effectively for wireless sensor networks. On the basis of differential services and utilize the whole resource analyzing the problem of QoS routing in the wireless sensor networks, a new distributed QoS routing algorithm according to the minimum node energies on path and minimum hop counts has been proposed by extending Directed Diffusion. Also a kind of new simulation model is designed. By analyzing the results of the simulation based on this model, this proposed algorithm can provide differential services both for real-time traffic and best-effort traffic, achieve the energy-cost-balancing on the whole network and prolong the network lifetime by 500%.