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Gathering radio messages in the path

hal.structure.identifierCombinatorics, Optimization and Algorithms for Telecommunications [COATI]
dc.contributor.authorBERMOND, Jean-Claude
hal.structure.identifierAlgorithmics for computationally intensive applications over wide scale distributed platforms [CEPAGE]
hal.structure.identifierLaboratoire Bordelais de Recherche en Informatique [LaBRI]
dc.contributor.authorKLASING, Ralf
hal.structure.identifierDelphos mine Planning Lab
dc.contributor.authorMORALES, Nelson
hal.structure.identifierCombinatorics, Optimization and Algorithms for Telecommunications [COATI]
dc.contributor.authorPÉRENNES, Stéphane
hal.structure.identifierDepartment of Statistics [Leganes, Madrid]
dc.contributor.authorREYES, Patricio
dc.date.accessioned2024-04-15T09:42:21Z
dc.date.available2024-04-15T09:42:21Z
dc.date.issued2013-03
dc.identifier.issn1793-8309
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/197674
dc.description.abstractEnIn this paper, we address the problem of gathering information in one node (sink) of a radio network where interference constraints are present: when a node transmits, it produces interference in an area bigger than the area in which its message can actually be received. The network is modeled by a graph; a node is able to transmit one unit of information to the set of vertices at distance at most dT in the graph, but when doing so it generates interferences that do not allow nodes at distance up to dI (dI ≥ dT ) to listen to other transmissions. We are interested in finding a gathering protocol, that is an ordered sequence of rounds (each round consists of noninterfering simultaneous transmissions) such that w(u) messages are transmitted from any node u to a fixed node called the sink. Our aim is to find a gathering protocol with the minimum number of rounds (called gathering time). In this article, we focus on the specific case where the network is a path with the sink at an end vertex of the path and where the traffic is unitary (w(u) = 1 for all u); indeed this simple case appears to be already very difficult. We first give a new lower bound and a protocol with a gathering time that differ only by a constant independent of the length of the path. Then we present a method to construct incremental protocols. An incremental protocol for the path on n + 1 vertices is obtained from a protocol for n vertices by adding new rounds and new calls to some rounds but without changing the calls of the original rounds. We show that some of these incremental protocols are optimal for many values of dT and dI (in particular when dT is prime). We conjecture that this incremental construction always gives optimal protocols. Finally, we derive an approximation algorithm when the sink is placed in an arbitrary vertex in the path.
dc.language.isoen
dc.publisherWorld Scientific Publishing
dc.title.enGathering radio messages in the path
dc.typeArticle de revue
dc.identifier.doi10.1142/S1793830913500043
dc.subject.halInformatique [cs]/Réseaux et télécommunications [cs.NI]
dc.subject.halInformatique [cs]/Mathématique discrète [cs.DM]
dc.subject.halInformatique [cs]/Algorithme et structure de données [cs.DS]
dc.subject.halInformatique [cs]/Informatique ubiquitaire
bordeaux.journalDiscrete Mathematics, Algorithms and Applications
bordeaux.page1-28
bordeaux.volume5
bordeaux.hal.laboratoriesLaboratoire Bordelais de Recherche en Informatique (LaBRI) - UMR 5800*
bordeaux.issue1
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.peerReviewedoui
hal.identifierhal-00907494
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00907494v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Discrete%20Mathematics,%20Algorithms%20and%20Applications&rft.date=2013-03&rft.volume=5&rft.issue=1&rft.spage=1-28&rft.epage=1-28&rft.eissn=1793-8309&rft.issn=1793-8309&rft.au=BERMOND,%20Jean-Claude&KLASING,%20Ralf&MORALES,%20Nelson&P%C3%89RENNES,%20St%C3%A9phane&REYES,%20Patricio&rft.genre=article


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