A Survey on LEACH-Based Energy Aware Protocols for Wireless Sensor Networks

Due to the advances in wireless communications and electronics technology, Wireless Sensor Networks (WSNs) are used in many applications such as civil and military application. A WSN is composed on many nodes each of which is basically equipped with a sensing device to collect data from the environment, a processing unit to do some operations on data, a transceiver to send and receive collected and an energy source to provide the required energy to operate (usually a battery). In most applications sensor nodes are randomly deployed in the field.