A Novel Cross-layer Mobile Data-gathering Protocol for Underwater Sensor Networks

摘要

In this paper, a novel Cross-Layer Mobile Data gathering (CLMD) scheme for Underwater Sensor Networks (UWSNs) is presented to improve the performance with a cross-layer design in the MAC and routing layer. CLMD develops a distributed cross-layer mobile data gathering solution that allows multiple sensors to efficiently and fairly share the bandwidth-limited high-delay underwater acoustic medium and aggregate data packets in a group of cluster heads which are visited by Autonomous Underwater Vehicle (AUV) in the periodic tours. The network lifetime is prolonged by reselecting the cluster heads in the different operational phases while the tour length is kept short to reduce the latency. The effectiveness of CLMD is validated through an extensive simulation study which reveals the performance improvement in the energy-saving, network lifetime, and packet delivery ratio.