摘要
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。
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 forwarding between nodes on the frequency of f2.In buffer management,HBR employs the message with short survival time and forwarding domain Mto 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.
出处
《计算机科学》
CSCD
北大核心
2016年第S1期255-259,共5页
Computer Science
基金
国家自然科学基金:物联网感知层攻击检测技术(61101108)资助
关键词
延迟容忍网络
传感器网络
随机路点模型
消息副本
Delay tolerant networks
Wireless sensor networks
Random waypoint model
Message copy
