ELM-MAC: Energy Efficient Link Management by Using Optimal Transmission Power in MAC Protocol

Many studies on sensor network have focused on energy efficiency in several layers on communication protocol. In order to increase energy efficiency in sensor network communication, MAC-layer energy efficiency needs to be considered. Even though MAC layer protocols for increasing energy efficiency at MAC layer have been proposed in several papers, there have been few of researches that focused on energy efficiency methods in which transmission power is considered.    In this paper we propose a new mechanism named as ELM-MAC that creates, uses, and manages the optimized transmission power level for energy efficiency in MAC layer.