Database Reference
In-Depth Information
Chapter 3
QUERY PROCESSING IN WIRELESS
SENSOR NETWORKS
Lixin Wang
Hong Kong University of Science and Technology
leaing@gmail.com
Lei Chen
Hong Kong University of Science and Technology
leichen@cse.ust.hk
Dimitris Papadias
Hong Kong University of Science and Technology
dimitris@cse.ust.hk
Abstract
Recently, with the fast development of sensing and wireless communi-
cation technology, wireless sensor networks (WSNs) have been applied
to monitor the physical world. 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. Net-
work protocols ensure the effectiveness of communication between sensor
nodes and provide the foundation for WSN applications. The charac-
teristics of WSNs, including the limited energy supply and computa-
tional resources, render the design of WSN algorithms challenging and
interesting. Both the Database and Network communities have dedi-
cated considerable efforts to make WSNs more effective and ecient.
In this chapter, we survey the problems arisen in practical applications
of WSNs, focusing on various query processing techniques over captured
sensing data.
Keywords:
Query Processing, Wireless Sensor Networks
