The multi-radius cover problem

Refael Hassin, Danny Segev

Research output: Contribution to journalConference articlepeer-review

Abstract

Let G = (V, E) be a graph with a non-negative edge length lu,v for every (u, v) ∈ E. The vertices of G represent locations at which transmission stations are positioned, and each edge of G represents a continuum of demand points to which we should transmit. A station located at v is associated with a set Rv of allowed transmission radii, where the cost of transmitting to radius r ∈ Rv is given by c v(r). The multi-radius cover problem asks to determine for each station a transmission radius, such that for each edge (u, v) ∈ E the sum of the radii in u and v is at least lu,v, and such that the total cost is minimized. In this paper we present LP-rounding and primal-dual approximation algorithms for discrete and continuous variants of multi-radius cover. Our algorithms cope with the special structure of the problems we consider by utilizing greedy rounding techniques and a novel method for constructing primal and dual solutions.

Original languageEnglish
Pages (from-to)24-35
Number of pages12
JournalLecture Notes in Computer Science
Volume3608
DOIs
StatePublished - 2005
Externally publishedYes
Event9th International Workshop on Algorithms and Data Structures, WADS 2005 - Waterloo, Canada
Duration: 15 Aug 200517 Aug 2005

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science (all)

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