A CSMA based intra cluster communication technique for saving cluster head energy

Wireless sensor network is one of the most promising technology in wireless network. To design a sensor network, improving the lifetime of sensor node is critical issue. For these reason researchers in these field pay great attention to Medium Access Control (MAC) protocol. As most of the nodes are placed in remote and hazardous area, so when the power is down it is difficult to recharge them or it is not possible to replace them. For these reason the main concern of researchers is how to utilize the medium in a power effective manner. With advance of these various MAC protocols are introduced and lots of recent works are going on. LEACH protocols are one of these protocols which introduce clustering technique. In this paper, we propose a method for intra cluster communication based on CSMA and an extended cluster head selection algorithm. Also figure out mathematical comparison between LEACH protocol and our proposed method. The protocol selection depends on the application requirements and hardware characteristics. LEACH is suitable for low traffic and small area. Here we also consider low traffic.