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Author Du, H. ♦ Jia, X. ♦ Xiaodong Hu
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2006
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Energy efficiency ♦ Wireless sensor networks ♦ Broadcasting ♦ Routing ♦ Costs ♦ Approximation algorithms ♦ Multicast algorithms ♦ Batteries ♦ Mathematics ♦ Mathematical model
Abstract One of the basic operations in a wireless sensor network is the enquiry and transmission of sensed data from sensor devices in some specified regions to the data center for further processing. A key challenge in data enquiring and transmitting is to minimize the total energy cost occurring at all sensor nodes involved. In this paper, we introduce and study the energy efficient data enquiring problem under the geographic anycast model: given the location of a data sink and some sensor nodes in a set of regions, construct a tree rooted at the sink such that at least one sensor in each given region is in the tree. The objective is to minimize the total energy cost of the transmitting nodes in the tree. We first prove that this problem is NP-hard and unlikely has an approximation algorithm with a performance ratio in logarithmic of the number of sensors in the network. We then propose some tree based approximation algorithms. We make both theoretical and simulation analysis for the performances of proposed algorithms. Our study shows that anycast approach is more energy efficient than broadcast or multicast
Description Author affiliation: Dept. of Comput. Sci., City Univ. of Hong Kong (Du, H.; Jia, X.)
ISBN 1424405483
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2006-11-14
Publisher Place China
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Size (in Bytes) 5.26 MB
Page Count 4
Starting Page 1
Ending Page 4


Source: IEEE Xplore Digital Library