Multi-hop routing and scheduling in wireless networks in the SINR model

Guy Even, Yakov Matsri, Moti Medina

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

We present an algorithm for multi-hop routing and scheduling of requests in wireless networks in the sinr model. The goal of our algorithm is to maximize the throughput or maximize the minimum ratio between the flow and the demand. Our algorithm partitions the links into buckets. Every bucket consists of a set of links that have nearly equivalent reception powers. We denote the number of nonempty buckets by σ. Our algorithm obtains an approximation ratio of O(σ·log n), where n denotes the number of nodes. For the case of linear powers σ = 1, hence the approximation ratio of the algorithm is O(logn). This is the first practical approximation algorithm for linear powers with an approximation ratio that depends only on n (and not on the max-to-min distance ratio). If the transmission power of each link is part of the input (and arbitrary), then σ ≤ log Γ + log Δ, where Γ denotes the ratio of the max-to-min power, and Δ denotes the ratio of the max-to-min distance. Hence, the approximation ratio is O(log n ·(logΓ + log Δ)). Finally, we consider the case that the algorithm needs to assign powers to each link in a range [P min ,P max ]. An extension of the algorithm to this case achieves an approximation ratio of O[(log n + log log Γ) ·(log Γ + log Δ)].

Original languageEnglish
Title of host publicationAlgorithms for Sensor Systems - 7th International Symposium on Algorithms for Sensor Systems, Wireless Ad Hoc Networks and Autonomous Mobile Entities, ALGOSENSORS 2011, Revised Selected Papers
Pages202-214
Number of pages13
DOIs
StatePublished - 27 Feb 2012
Externally publishedYes
Event7th International Symposium on Algorithms for Sensor Systems, Wireless Ad Hoc Networks and Autonomous Mobile Entities, ALGOSENSORS 2011 - Saarbrucken, Germany
Duration: 8 Sep 20119 Sep 2011

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume7111 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference7th International Symposium on Algorithms for Sensor Systems, Wireless Ad Hoc Networks and Autonomous Mobile Entities, ALGOSENSORS 2011
Country/TerritoryGermany
CitySaarbrucken
Period8/09/119/09/11

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