PROPOSED MAC PROTOCOL FOR REDUCE ENERGY CONSUMPTION OVER WSN NETWORK

Abstract

Wireless sensor network consists of a large numbers of small electronically low cost sensor nodes which are sensing the environment physical measures with limited memory and limited processing unit. The efficient use of energy resources in sensor nodes could extend the lifetime of the WSN (Wireless Sensor Network). The main cause of energy waste is communication. Therefore, The issue of energy saving is considered primarily in transmission and dissemination of data in sensor networks. Using multi hop routing is always better, as it has many advantages over the single hop networks and all internal nodes bears the responsibility of data transmission. So, we proposed a protocol that provides reliable data transmission with higher data packet delivery rate with minimum consumption of energy. The proposed protocol uses multi token based MAC protocol that minimizes the flooding, collision and provides congestion less environment for data transmission. Each node has a unique ID, parents ID and a hop count number in network. Except the leaf nodes, Random sleep scheduling minimizes the idle listening and over hearing problem by putting some nodes into sleep mode. The main problem is Token distribution that leads to data loss and retransmission, main causes of energy wastage. So, in this approach a token management is used that provides both reliable data transmission and higher delivery data packet ratio in WSN. Here, multiple parents of a sensor node support the fault tolerance and with token management, this proposed approach provides the reliable data transmission.