Selective Replication-Based Data Delivery for Delay Tolerant Mobile Sensor Networks

Abstract: This paper proposes a data gathering method⎯SRAD (selective replication-based adaptive data delivery scheme). The main idea of SRAD is to replicate messages selectively to nodes that have higher probability to meet the sink. SRAD consists of two key components: data transmission and queue management. The former makes decisions on when and where to transmit data messages according to the node delivery probability in random waypoint mobility model. The latter based on the message survival time to decide message’s transmission and dropping to minimize the transmission overhead. Simulation results show that the proposed SRAD data delivery scheme cannot only have a relatively longer network lifetime but also a higher message delivery ratio with the lower transmission overhead and less data delivery delay than other DTMSN (delay tolerant mobile sensor networks) data delivering approaches. Key words: DTMSN (delay tolerant mobile sensor networks); data gathering; dynamic data delivery; selective replication; queue management 摘 要: 提出了一种基于选择复制的动态数据传输策 略 SRAD(selective replication-based adaptive data delivery scheme),基本思想是把消息(message)动态的复制给更有可能与汇聚点(sink node)通信的传感器节点.SRAD 由数