NDLI: Numerical Flow Optimization in Dense Wireless Sensor Networks

Content Provider	IEEE Xplore Digital Library
Author	Haghpanahi, M. Kalantari, M. Shayman, M.
Copyright Year	2008
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Univ. of Maryland, College Park, MD (Haghpanahi, M.; Kalantari, M.; Shayman, M.)
Abstract	We use a vector field model to formulate flow of information at every point of a dense wireless sensor network. The magnitude of this vector field represents the density of communication activity and its direction is toward the flow of information at each point. We present a general method for flow optimization in a wireless sensor network by minimizing the p-norm of the information flow vector field subject to the basic flow constraints, that is the flow conservation law and boundary constraints. We have called this problem the p-norm flow optimization, and use Sequential Quadratic Programming to solve it. The p-norm flow optimization shows interesting properties for different values of p. For p close to 1, the information routes resemble the geometric shortest paths while as p gets larger, there will be more load balancing effects in the flow. In this work we focus on the numerical analysis of the p-norm flow problem. For this we have to approximate the continuous flow problem by a discrete problem which adds some inaccuracy to the solutions. Therefore, we propose an algorithm to continuously compensate the error in the information flow vector field and avoid error accumulation in the system. We also discuss ways with which we can support different network geometries in the numerical analysis.
Starting Page	1
Ending Page	6
File Size	198548
Page Count	6
File Format	PDF
ISBN	9781424423248
ISSN	1930529X
DOI	10.1109/GLOCOM.2008.ECP.975
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-11-30
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless sensor networks Boundary conditions Cost function Constraint optimization Load management Telecommunication traffic Quadratic programming Fluid dynamics Electrostatic analysis Numerical analysis
Content Type	Text
Resource Type	Article

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