A Route Maintenance Method for Marine Mobile Sensor Network Based on Ring Broadcast Mechanism

Abstract

This paper provides a route maintenance method for marine mobile sensor networks (MMSN) to monitor the marine surface environment. The two-layer collection network on the marine surface is firstly constructed, in which sensor nodes send small-scale data to the collection head (CH) node for storage by multi-hop route. The CHs upload data to nearby UAV, which help to save network energy while expanding network coverage. Secondly, the broadcast mode of the Ring Broadcast message can effectively guide search direction of the sensor node routing. Meanwhile the inner-collection nodes select the optimal next-hop node by the fitness function, which helps to balance the energy consumption of each node and search optimal path. Lastly, dynamic routing mechanism in complex environment can quickly search the alternative path to repair route, and thus adapt to the frequent change of MMSN topology. In this paper, the dynamic transmission of UAV mobility and collection network structure are used to realize the high-efficiency transmission of maritime monitoring data, which can effectively improve the network hole problem in harsh maritime environment.