Dynamic sensitivity control to improve spatial reuse in dense wireless LANs

Parag Kulkarni, Fengming Cao

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

With the proliferation of wireless LANs, we are in an era of densification. Whilst densification could lead to increased coverage (neighbouring APs belonging to the same administrative domain), which is good news, it could also lead to increased interference (neighbouring APs not belonging to the same administrative domain). In particular, in the latter case, nodes (both APs and STAs) in neighbouring networks could carrier sense each other and resist from transmitting when in fact a parallel transmission could have been harmless. Thus, improving spatial reuse in such scenarios is crucial to improving performance in dense deployments otherwise the efficiency is likely to take a hit. This paper elaborates on dynamic sensitivity control (DSC), a way of adapting the carrier sensing threshold dynamically to address the aforementioned issue and presents results from a simulation based study aimed at evaluating the proposed method. Findings indicate that the gains achievable from deploying DSC vary significantly depending on the operating conditions and therefore, choosing a fixed conservative threshold at design time, as has been the case traditionally, may not be an appropriate decision. We also show that enabling DSC at the AP may bring benefits with the performance approaching that of the traditional method (of not adapting sensitivity) in the conservative case.

Original languageEnglish
Title of host publicationMSWiM 2016 - Proceedings of the 19th ACM International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems
PublisherAssociation for Computing Machinery, Inc
Pages323-329
Number of pages7
ISBN (Electronic)9781450345026
DOIs
Publication statusPublished - Nov 13 2016
Externally publishedYes
Event19th ACM International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems, MSWiM 2016 - Malta, Malta
Duration: Nov 13 2016Nov 17 2016

Publication series

NameMSWiM 2016 - Proceedings of the 19th ACM International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems

Conference

Conference19th ACM International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems, MSWiM 2016
Country/TerritoryMalta
CityMalta
Period11/13/1611/17/16

Keywords

  • CCA adaptation
  • Dense wireless LANs
  • Dynamic sensitivity control (DSC)
  • IEEE 802.11ax

ASJC Scopus subject areas

  • Modelling and Simulation
  • Computer Networks and Communications

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