Enhancing downlink multimedia QoS in WiFi hotspot networks

Jong Ok Kim, Yosuke Tanigawa, Hideki Tode

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

1 Citation (Scopus)

Abstract

In IEEE 802.11 DCF, performance unfairness inevitably occurs between downlink (AP-to-station) and uplink (station-to-AP) directions. The asymmetry of the DCF operation degrades downlink traffic severely. Therefore, it is important to enhance downlink QoS by alleviating link congestion. In this paper, we propose a novel medium access control scheme, B-DCF (Burst DCF), to enhance the legacy DCF. It is designed to provide a level of QoS differentiation with downlink traffic, and can improve downlink multimedia QoS in a cell. QoS differentiation is realized using burst transmission control. B-DCF is fully backward compatible to the legacy DCF, and can friendly operate with normal DCF stations. B-DCF is evaluated and compared to DCF and EDCA schemes. For heavy BE (best effort) loads, the proposed B-DCF scheme can support larger number of conversational voice calls while achieving larger BE throughput.

Original languageEnglish
Title of host publicationProceedings - INDIN 2010
Subtitle of host publication8th IEEE International Conference on Industrial Informatics
Pages1049-1053
Number of pages5
DOIs
Publication statusPublished - 2010
Event8th IEEE International Conference on Industrial Informatics, INDIN 2010 - Osaka, Japan
Duration: 2010 Jul 132010 Jul 16

Publication series

NameIEEE International Conference on Industrial Informatics (INDIN)
ISSN (Print)1935-4576

Other

Other8th IEEE International Conference on Industrial Informatics, INDIN 2010
CountryJapan
CityOsaka
Period10/7/1310/7/16

ASJC Scopus subject areas

  • Computer Science Applications
  • Information Systems

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