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Interactions Between Hidden Node Collisions and Congestions in Multihop Wireless Ad-hoc Networks

Hicham Khalife 1 Naceur Malouch 1
1 NPA - Networks and Performance Analysis
LIP6 - Laboratoire d'Informatique de Paris 6
Abstract : In this work, we study the performance of the IEEE 802.11 MAC protocol and its impact on the transport layer performance in multihop wireless ad-hoc networks. We focus on the hidden node problem that effects heavily the end-to-end delay and the packet loss probability. Through a mathematical analysis, we compute the packet loss probability as a function of the load. We develop a simplified model of a multihop wireless network and we use it to analyze the interaction between collision and congestion. We find that reducing the size of the MAC output queue can increase the applications throughput. This is done by setting the adequate buffer size that makes congestions and collisions operate in the same region. This will also allow closed or open-loop control protocols such as TCP to react correctly to losses caused by collisions as well as losses caused by buffer overflow. Simulation results with TCP traffic corroborate our theoretical analysis.
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Conference papers
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https://hal.archives-ouvertes.fr/hal-01351737
Contributor : Lip6 Publications <>
Submitted on : Thursday, August 4, 2016 - 4:12:38 PM
Last modification on : Thursday, March 21, 2019 - 1:09:16 PM

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  • HAL Id : hal-01351737, version 1

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Hicham Khalife, Naceur Malouch. Interactions Between Hidden Node Collisions and Congestions in Multihop Wireless Ad-hoc Networks. IEEE International Conference on Communications, ICC 2006, Jun 2006, Istanbul, Turkey. pp.3947-3952. ⟨hal-01351737⟩

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