A Comparative Analysis of Routing Protocols for WSNs with Mobile Sink

In wireless sensor networks, nodes usually use multi-hop communication to transmit sensed data to base station. As a result sensors near the sink will deplete their energy quickly and the sink will be isolated from the network. One way of mitigating this problem is to move sink all around the network. Sink mobility causes some challenging issues in WSNs which make it impossible to use classic routing protocols of Wireless sensor networks with static sink. In this paper, we listed several routing protocols for WSNs with mobile sink to see how they deal with challenges. The aim of this survey is to consider, best solutions for challenges and important factors in developing new protocols. Finally, we have comparative analysis of mobile sink routing protocols.