Attribute Based Routing For Query Processing To Minimize Power Consumption in Wireless Sensor Networks

Abstract

A wireless sensor Network consists of sensors implanted in an environment for collecting & transmitting data regarding changes in the environment based on the requests from controlling device or base station using wireless communication. WSNs are being used in medical, military and environment monitoring applications. Query dissemination and gathering of information towards central node are important communication paradigms across all application domains.

Power consumption constraints in WSNs require task specific queries to adopt efficient data centric routing schemes. This project proposes new routing methods for wireless sensor network queries. These methods draw parallels from and extend the notion of making the routing protocol aware of the underlying network semantics for queries. The proposed methods reduce the communication overhead & power consumption by reducing number of sensor nodes participating nodes required to participate in certain queries in order to successfully answer to user specific queries in WSNs.

In most instances of sensor network deployment, the sensory attribute values (say, light, temperature, etc…) often vary within a certain range of possible values termed the sensory range or the attribute-value range. It is possible to design a protocol that takes the query range and the historical value change information into account to determine if a particular node or set of nodes should participate in the query? Making this as the base, the work presented here uses that feature to develop new routing scheme for energy efficient processing of attribute specific queries. TOSSIM (the TinyOS Simulator) is used to implement and simulate routing schemes.