传感器网络汇聚数据包路由协议

Aggregated packet routing protocol for sensor networks

针对移动目标跟踪应用对传感器网络路由协议的性能要求,提出了一种汇聚数据包路由协议,用于由目标区域到sink节点的汇聚数据包路由.协议采取基于sink节点的贪婪转发策略,通过减少通信跳数,减少了数据包从目标节点到sink节点的端到端传输时延;协议以节点能量和距离的综合函数作为转发代价,使其具有较高的能量效率;只要求节点维护自身状态信息,具有较好的可扩展性.仿真实验表明,协议能够满足目标跟踪应用对传感器网络路由协议的性能要求.

Considering the requirements of tracking mobile objects in sensor networks, a routing protocol for aggregate packets was presented, which would be employed to deliver aggregate packets from a node in a target region to the sink. A greedy forwarding decision based on geographical information of the sink node was used to reduce communication hops, which results in reducing the end-to-end delay between an object node and the sink. An integrated function of energy and the euclidean distance was taken as an election cost for the next forwarding node, these ensure the proposed protocol was energy efficient. Nodes need only information about themselves, this enhances its extensibility. Simulation results showed the proposed protocol exhibits its better performances for object tracking in sensor networks.