Survey of Area query processing using Gray Codes in wireless sensor network

Abstract

The monitored area will be partitioned into grids, and a unique gray code number will be used to
represent a Grid ID (GID), which is an effective way to describe an area .In order to energy-efficiently answering
continuous queries, the design of an incremental update method is done here to continuously generate query results.
Existing query processing techniques cannot solve the area queries. Centralized processing on Base Station can
accomplish area queries namely collecting information from all sensor nodes. A WSN consists of a set of sensor
nodes,
Which are small sensing devices with limited computational resources able to communicate with each other located in
their radio range. Network protocols ensure the effectiveness of communication between sensor nodes and provide the
foundation for WSN applications. The characteristics of WSNs, including the limited energy supply and
computational resources, render the design of WSN algorithms challenging and interesting. Both the Database and
Network communities have dedicated considerable efforts to make WSNs more effective and efficient. In this chapter,
we survey the problems arisen in practical applications of WSNs, focusing on various query processing techniques
over captured Sensing data..