Starfish routing for sensor networks with mobile sink

Wireless Sensor Networks (WSNs) with mobile sinks were proven to provide extended network lifetime and better data delivery services. This was achieved by minimizing routing costs and avoiding development of any hot-spot zones in the network. However, existing routing strategies in the literature have limitations to offer end-to-end data delivery delay and throughput required by the real-time sensing and monitoring applications. In this paper, following the principle of water vascular system of a Starfish, we have designed a routing backbone consisting of a central ring-canal and a number of radial-canals across the network. The radius of the ring-canal and the number of radial-canals are dynamically determined based on the transmission range of sensor nodes and size of the network. The…