An Event-Driven Mobile Assistant Control Protocol for Wireless Sensor Networks

In this paper, we propose a node´s call-for-assistant protocol, named an event-driven mobile assistant protocol (EDMAP for short), with which when a node N is going to exhaust its energy, it calls for mobile nodes to help it to relay packets so the tasks of sensing environment or environment change and relay packets for upstream nodes can be proceeded. Experimental results show that this approach can effectively prolong node utilization rate and network lifetime.