Wireless sensor network energy management based on compression and coverage – a survey

Wireless sensor networks are used to monitor changes in the environment of a given field. Coverage, communication and connectivity of the network are the most fundamental challenges in WSNs. Sensors nodes are mostly battery operated and are expected to work for a longer time without replacing the batteries. The measure of the efficiency of a network usually defined with respect to how efficient in sensing the given physical ambience. The constraint most often linked with sensor node is that it operates with restricted energy budgets. Energy conservation becomes the important parameter to prolong the lifetime of sensor nodes. The energy lose may occurs due to collision of data packets, idle listening of sensor node, overhearing of nodes, frequent switching of nodes to various modes. Various energy management practices are in going on to increase the life time of the sensor nodes. This paper describes the survey of energy management in WSN nodes using compression of data packets and node deployment methods.