A Noval Minimum Transmission LEACH Protocol for WSN (Proposed)

Wireless Sensor networks consisting of nodes with limited battery power and wireless communications are deployed to collect useful information from the sensor field. It is very difficult for the sensor network to operate for a long period of time in an energy efficient manner for gathering sensed information. This paper proposes a Minimum Transmission Concept in LEACH (Low- energy Adaptive Clustering Hierarchy) protocol, which is nearly optimal for this data gathering application in sensor networks. The key idea in LEACH is that the gathered data moves from node to another node (the local Base Station), and eventually a designated node transmits to the Base Station. By randomizing the cluster heads chosen to transmit to the base station, LEACH achieves improvement compared to direct transmissions, as measured in terms of when nodes die. The lifetime of such a sensor system is the time during which it gathers information from all the sensors to the base station. Given the location of sensors and the base station and the available energy at each sensor, the paper proposes an efficient manner in which the data should be collected from all the sensors and transmitted to the base station, such that the system lifetime is maximized.