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A Framework for the Capacity Evaluation of Multihop Wireless Networks

Hervé Rivano 1 Fabrice Theoleyre 2 Fabrice Valois 3
1 MASCOTTE - Algorithms, simulation, combinatorics and optimization for telecommunications
CRISAM - Inria Sophia Antipolis - Méditerranée , Laboratoire I3S - COMRED - COMmunications, Réseaux, systèmes Embarqués et Distribués
2 Drakkar
LIG - Laboratoire d'Informatique de Grenoble
3 SWING - Smart Wireless Networking
Inria Grenoble - Rhône-Alpes, CITI - CITI Centre of Innovation in Telecommunications and Integration of services
Abstract : The specific challenges of multihop wireles networks lead to a strong research effort on efficient protocols design where the offered capacity is a key objective. More specifically, routing strategy largely impacts the network capacity, i.e. the throughput offered to each flow. In this work, we propose a complete framework to compute the upper and the lower bounds of the network capacity according to a physical topology and a given routing protocol. The radio resource sharing principles of CSMA-CA is modeled as a set of linear constraints with two models of fairness. The first one assumes that nodes have a fair access to the channel, while the second one assumes that on the radio links. We then develop a pessimistic and an optimistic scenarios for radio resource sharing, yielding a lower bound and an upper bound on the network capacity for each fairness case. Our approach is independent of the network topology and the routing protocols, and provides therefore a relevant framework for their comparison. We apply our models to a comparative analysis of a well-known flat routing protocol OLSR against two main self-organized structure approaches, VSR and localized CDS.
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Submitted on : Thursday, March 26, 2009 - 4:13:37 PM
Last modification on : Tuesday, December 8, 2020 - 10:22:05 AM
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  • HAL Id : hal-00371161, version 1


Hervé Rivano, Fabrice Theoleyre, Fabrice Valois. A Framework for the Capacity Evaluation of Multihop Wireless Networks. Ad Hoc & Sensor Wireless Networks, PKP Publishing ServicesNetwork 2010, 9 (3-4), pp.139-162. ⟨hal-00371161⟩



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