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支持“一次部署多种应用”是无线传感器网络的发展趋势,这要求路由协议能区分不同QoS的数据分发。本文通过对传统定向扩散路由(DD)算法的扩展,在保证业务可靠性的前提下,组合利用“路径最小能耗”和“最小跳数”信息,以及加次优路径等思想,提出一种区分数据业务和实时业务的QoS路由算法。仿真结果表明,扩展后的算法能满足业务的可靠性要求,且随信道错误率的增加,能均衡网络节点能耗和延长网络生命期。
Support “deploy multiple applications at a time ” is the trend of wireless sensor network, which requires routing protocol to distinguish between different QoS data distribution. In this paper, we expand the traditional DD algorithm and combine the idea of “minimum energy consumption” and “minimum hops” of information and plus sub-optimal path under the premise of ensuring the reliability of the business. , Proposes a QoS routing algorithm that differentiates between data services and real-time services. The simulation results show that the extended algorithm can meet the reliability requirements of the service, and with the increase of channel error rate, it can balance the energy consumption of network nodes and extend the network lifetime.