摘要
针对无线传感网络中定向地理路由的多路径多类型数据包传输策略中延迟长和能耗高等问题,提出基于Qo S调度模型的无线传感网定向地理路由策略.该策略首先根据不同业务类型的需求,对关键度量参数评估;然后建立Qo S度量列表,依据此表发送相关的PROB路由探测消息;最后具有数据处理能力的节点根据接收到的控制信息,采用最优的路由策略,将数据传输到汇聚节点Sink,从而减少端到端的延迟,延长网络的生命周期.仿真实验结果表明,对于大量不同类型的信源数据,该策略相对E-DGR,在端到端延迟、能耗以及网络生命周期等方面表现出较好的性能.
For the problems, such as the long delay and high energy consumption of multi-path and multi-type data packet transmission strategy based on directional geographic routing in wireless sensor networks, we propose the strategy based on QoS scheduling model. According to the different types of the demand, the strategy firstly uses some important metrics to make evaluation;then it will set up QoS metric list, and send the PROB message which is used for routing detection based on the list;finally, having the ability of data processing nodes adopt the optimal routing strategy to transmit data to the Sink node with the received control information, thereby re- ducing the end-to-end delay and prolonging the network lifetime. Compared with the single E-DGR strategy, the simulation results show that,this strategy performs better performance in terns of the end to end delay,energy consumption and network lifetime when there are a number of different types of source data.
出处
《小型微型计算机系统》
CSCD
北大核心
2015年第5期922-927,共6页
Journal of Chinese Computer Systems
基金
国家自然科学基金项目(61379079)资助
关键词
无线传感网
定向地理路由
QoS调度模型
延迟
网络生命周期
Wireless sensor network
directional geographic routing
QoS scheduling model
delay
network lifetime
