Load balancing in energy efficient connected coverage wireless sensor network

Since sensor network lifetime shows a strong dependence on battery lifetime, power consumption is a critical concept in design of sensor network. For the sensor network to operate successfully both requirements of sensing coverage and network connectivity should be met. Other research have joined coverage and connectivity problem at the same time. Sensing coverage is achieved by dividing sensor nodes to subsets. Then the algorithm turns on some extra nodes in each subset to ensure network connectivity. Problem with this method is the existence of critical nodes. These nodes may be on all the time and network will be partitioned if these nodes die. Our future work will be concentrated on writing the algorithm for these critical nodes.