Transmit Power Control exploiting capture effect for WLANs

Szu Lin Su, Yuan Chun Tsai, Hsieh Cheng Liao

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

3 Citations (Scopus)

Abstract

Wireless local area networks (WLANs) have been globally deployed for years. Today, most WLANs adopt IEEE 802.11 distributed coordination function (DCF) for stations to share the medium. IEEE 802.11 DCF employs contention-based channel access, and as generally known, collision will happen when multiple stations launch transmissions simultaneously. However, from physical layer perspective, if the signal strength of one transmission is much higher than that of others, then the access point (AP) will be able to decode the transmission. This is called capture effect. Capture effect has the potential to improve the contention efficiency. In this paper, we propose Differentiated-Received-Power Transmit Power Control (DRP-TPC), which exploits capture effect to improve the contention efficiency. With DRP-TPC, each STA configures the transmit power, such that the received power at the AP side will meet a pre-specified requirement. DRP-TPC properly sets the received-power requirements, and thus, when multiple STAs launch transmissions simultaneously, the AP will still be able to decode the transmission with the best received signal strength. Simulation results show that, DRP-TPC outperforms the conventional TPCs in saturated throughput and medium access delay.

Original languageEnglish
Title of host publicationICUFN 2015 - 7th International Conference on Ubiquitous and Future Networks
PublisherIEEE Computer Society
Pages634-638
Number of pages5
ISBN (Electronic)9781479989935
DOIs
Publication statusPublished - 2015 Aug 7
Event7th International Conference on Ubiquitous and Future Networks, ICUFN 2015 - Sapporo, Japan
Duration: 2015 Jul 72015 Jul 10

Publication series

NameInternational Conference on Ubiquitous and Future Networks, ICUFN
Volume2015-August
ISSN (Print)2165-8528
ISSN (Electronic)2165-8536

Other

Other7th International Conference on Ubiquitous and Future Networks, ICUFN 2015
CountryJapan
CitySapporo
Period15-07-0715-07-10

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Computer Science Applications
  • Hardware and Architecture

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    Su, S. L., Tsai, Y. C., & Liao, H. C. (2015). Transmit Power Control exploiting capture effect for WLANs. In ICUFN 2015 - 7th International Conference on Ubiquitous and Future Networks (pp. 634-638). [7182621] (International Conference on Ubiquitous and Future Networks, ICUFN; Vol. 2015-August). IEEE Computer Society. https://doi.org/10.1109/ICUFN.2015.7182621