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.
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