TECHNIQUES TO PRESERVE THE LOCATION OF SINK IN WIRELESS SENSOR NETWORKS.

Information Science Engineering.

A wireless sensor network (WSN) is a computer network consisting of small space-occupying distributed autonomous devices called as sensors. These small sensors are used to monitor physical or environmental conditions such as temperature, sound, vibration, pressure, motion or pollutants at different locations. The development of wireless sensor network communication through sensors lead to one of major issue - Privacy. Since the communication patterns involving sensors could possibly be exposed to global adversary. Many protocols such as encryption algorithms can provide content-oriented security but context-oriented information generally remains insecure. Such context-oriented information such as the locations of monitored objects and data sinks or data source location can be can be deduced and used by an adversary for wrong purpose. However, number of techniques are there to deal with local eavesdropper who can only observe network communication in a small area but these techniques are remains insecure against global eavesdropper. This paper formalizes the different location privacy preserving schemes for wireless sensor networks.

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