Interference-safe CSMA Networks by Local Aggregate Interference Power Measurement

Abstract : Most current wireless IEEE 802.11 networks rely on a power-threshold based carrier-sensing multi-access (CSMA) mechanism to prevent packet collisions, in which a transmitter permits its transmission only if the locally measured aggregate interference power from all existing transmissions is below a prespecified power-sensing threshold. However, such a mechanism can not completely guarantee interference-safe transmissions, leading to the so-called hidden-node problem, which causes degradation in throughput and fairness performance. Traditionally, ensuring interference-safe transmissions was addressed by simple models of conflict graphs, rather than by the realistic signal-to-interference-and-noise ratio (SINR) model. This paper presents the first viable solution for fully interference-safe transmissions that (1) assumes an accurate SINR model, and (2) is compatible with the carrier-sensing mechanism in existing CSMA networks. Specifically, we determine a proper interference-safe power-sensing threshold by considering both the effects of (i) arbitrary ordering of local interference power measurements, and (ii) ACK frames. We compare our interference-safe solution with other solutions, and provide extensive evaluation on its throughput and fairness performance.
Type de document :
Communication dans un congrès
WiOpt'12: Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, May 2012, Paderborn, Germany. pp.1-8, 2012
Liste complète des métadonnées

Littérature citée [4 références]  Voir  Masquer  Télécharger

https://hal.inria.fr/hal-00763151
Contributeur : Service Ist Inria Sophia Antipolis-Méditerranée / I3s <>
Soumis le : lundi 10 décembre 2012 - 11:25:06
Dernière modification le : mardi 11 décembre 2012 - 15:17:22
Document(s) archivé(s) le : lundi 11 mars 2013 - 12:15:54

Fichier

p1-chau.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

  • HAL Id : hal-00763151, version 1

Collections

Citation

Chi-Kin Chau, Jialiang Zhang, Minghua Chen, Soung Chang Liew. Interference-safe CSMA Networks by Local Aggregate Interference Power Measurement. WiOpt'12: Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, May 2012, Paderborn, Germany. pp.1-8, 2012. 〈hal-00763151〉

Partager

Métriques

Consultations de la notice

79

Téléchargements de fichiers

127