Efficient Routing of Correlated Data in Energy Constrained Wireless Sensor Networks

A routing protocol in a wireless sensor network is usually used to find a route to the destination so that the nodes can report the event to the sink in an energy efficient manner. The battery limitations of the sensor nodes and the characteristics of the environment where the nodes are deployed, make the routing problem very challenging. The Sensor data from different nodes in a dense region may also be highly correlated. Such data when routed across a wireless sensor network leads to the redundancy of data at various nodes, thereby consuming a vast amount of energy. This paper discusses the issues faced in a correlation and interferenceaware wireless sensor network with a single base station and thereby proposes a technique called the MM-ICAR that provides energy efficient routing for correlated data with multiple intermediate base stations that deliver data to the sink in wireless sensor networks.