Energy Aware Database Updating Protocols for Autoconfigurable Sensor Networks

Abstract

In this paper, we propose two database updating models for homogeneous and autoconfigurable sensor network deployed in a truck without base station. In the first model, a Virtual Base Station (VBS) is periodically elected to act as classical base station for a given period of time. VBS election algorithm is based on the remaining energy level of each node at the time of selection of the VBS. The second idea deals with Energy aware Wait and See (WaS) protocol which manages update requests to avoid collisions. Like VBS, this protocol is also based on energy. Simulation results show that VBS and WaS models introduce very low overhead with respect to the classical network with permanent base station.

Reliable and Efficient Data Dissemination Protocol for Wireless Sensor Networks

“…in[4] and[5], letETx(k, d) the energy consumed to transmit a k bits message over a distance d[6] ETx(k, d) = Eelec * k + "amp * k * d2 ………. (1)Let ERx the energy consumed to receive a k bits message: ERx(k, d) = ERx−elec(k) = Eelec * k ………..(2) Eelec = 50nJ/bit and " = 100pJ/bit/m 2 ……….…”