基于大功率消息广播的DTMSN路由机制

提出一种基于基站大功率信号广播的延迟容忍移动传感器网络消息路由机制(High-power Broadcasting based Routing scheme,HBR)。该机制使用两个通信频率f₁ 和f₂,基站以恒定大功率在频率f₁上广播已经接收到的消息,网络中传感器节点根据基站广播信息计算自身转发概率并清理冗余消息副本,节点间利用频率f₂进行通信。为进一步提升网络性能,HBR优先传输转发阈值(M)小且生存时间短的消息,并合理进行消息队列管理。仿真结果表明,与几种经典的路由机制相比,HBR在消息传输成功率、传输延迟方面有着一定的优势。

High-power Broadcasting Based Routing Scheme for Delay Tolerant Mobile Sensor Networks

This paper proposed a high-power broadcasting based routing scheme (HBR) for delay tolerant mobile sensor networks.Using broadcasting information of base station on the frequency of f₁,sensor nodes not only can remove the redundant messages,but also can compute their own delivery probabilities which are the basis for messages forwar-ding between nodes on the frequency of f₂.In buffer management,HBR employs the message with short survival time and forwarding domain M to manage the message queues.Simulation results show that HBR scheme has a higher message delivery ratio and less delivery delay than some classic DTMSN routing schemes and its overhead of communicating is reasonable.