关键词: 延迟容忍网络, 传感器网络, 随机运动模型, 消息副本

Abstract: Proposed a broadcasting-based copy-removed data delivery scheme (CRD) for delay tolerant mobile sensor networks (DTMSN). 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 motion states and delivery probabilities which provide the basis for messages forwarding between sensor nodes on the frequency of f₂. At the same time, CRD employs the message survival time and message forwarding domain M to manage the message queues. Simulation results show that CRD has a higher message delivery ratio and less data delivery delay than many other DTMSN data delivering approaches.

Key words: delay tolerant networks, wireless sensor networks, random motive model, message copy