Dynamic sensitivity control based on two-hop farthest terminal in dense WLAN

Takanobu Ohnuma, Hiroshi Shigeno, Yusuke Tanaka, Tomoya Yamaura

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

Abstract

The explosive usage of IEEE 802.11 Wireless Local Area Network (WLAN) has resulted in its dense deployments and excessive interference between Basic Service Sets (BSSs) in urban area such as an apartment building and an airport. Serious problems of hidden/exposed terminal in high-density condition negatively impact system throughput. To improve the system efficiency, IEEE 802.11ax TG has been assembled. TG aims at realizing High-Efficiency- WLAN (HEW) by utilizing special reuse technologies including Dynamic Sensitivity Control (DSC), Transmit Power Control (TPC), and BSS Color Filtering (BCF). In this paper, we propose a DSC based on two-hop farthest terminal for dense WLAN. This scheme with minimum transmission power resolves the hidden terminal problem. Propagation loss of received signal from associated communication pair is used for the proper values of transmission power and carrier sense level. Furthermore, adjusting these parameters destination by destination can reduce exposed terminals effectively. We evaluate the performance of the proposed scheme in residential building scenario with three criteria, aggregate throughput, fairness and frame error rate. Simulation results show that the proposed scheme can improve aggregate downlink throughput and fairness compared to previously proposed method that carrier sense level is set based on expected RSSI level of received packet from communicating pair. Furthermore, improvement of frame loss rate implies that the hidden terminal problem can be solved by the proposed scheme.

Original languageEnglish
Title of host publicationProceedings - 32nd IEEE International Conference on Advanced Information Networking and Applications, AINA 2018
EditorsLeonard Barolli, Tomoya Enokido, Marek R. Ogiela, Lidia Ogiela, Nadeem Javaid, Makoto Takizawa
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages378-385
Number of pages8
Volume2018-May
ISBN (Print)9781538621943
DOIs
Publication statusPublished - 2018 Aug 9
Event32nd IEEE International Conference on Advanced Information Networking and Applications, AINA 2018 - Krakow, Poland
Duration: 2018 May 162018 May 18

Other

Other32nd IEEE International Conference on Advanced Information Networking and Applications, AINA 2018
CountryPoland
CityKrakow
Period18/5/1618/5/18

Keywords

  • Dense WLAN
  • DSC
  • Hidden and exposed terminal problem
  • IEEE 802.11ax
  • Spatial reuse
  • TPC

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Ohnuma, T., Shigeno, H., Tanaka, Y., & Yamaura, T. (2018). Dynamic sensitivity control based on two-hop farthest terminal in dense WLAN. In L. Barolli, T. Enokido, M. R. Ogiela, L. Ogiela, N. Javaid, & M. Takizawa (Eds.), Proceedings - 32nd IEEE International Conference on Advanced Information Networking and Applications, AINA 2018 (Vol. 2018-May, pp. 378-385). [8432266] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/AINA.2018.00064