Approximating Energy Efficient Paths in Wireless Multi-Hop Networks (CROSBI ID 493229)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Funke, Stefan ; Matijević, Domagoj ; Sanders, Peter
engleski
Approximating Energy Efficient Paths in Wireless Multi-Hop Networks
Given the positions of n sites in a radio network we consider the problem of finding routes between any pair of sites that minimize energy consumption and do not use more than some constant number k of hops. Known exact algorithms for this problem required \Omega(n \log n) per query pair (p, q). In this paper we relax the exactness requirement and only compute approximate (1+\epsilon) solutions which allows us to guarantee constant query time using linear space and O(n\log n) preprocessing time. The dependence on \epsilon is polynomial in 1/\epsilon. One tool we employed might be of independent interest: For any pair of points (p, q)\in P\subseteq\mathbb{Z}^2 we can report in constant time the cluster pair (A, B) representing (p, q) in a well-separated pair decomposition of P.
energy efficient paths; wireless multi-hop networks
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Podaci o prilogu
2003.
objavljeno
Podaci o matičnoj publikaciji
Proceedings of the 11th Annual European Symposium on Algorithms (ESA 2003)
Podaci o skupu
11th Annual European Symposium on Algorithms (ESA 2003)
predavanje
15.09.2003-20.09.2003
Budimpešta, Mađarska