On fairness in heterogeneous WLAN environments

Chiapin Wang*, Tsungnan Lin


研究成果: 書貢獻/報告類型會議論文篇章

3 引文 斯高帕斯(Scopus)


We analyze the fairness of IEEE 802.11 DCF in heterogeneous wireless LAN environments where users experience unequal channel conditions due to the mobility and fading effects. Previous works [3] [4] show that the 802.11 CSMA/CA can present fairness characteristics in both long-term and short-term. However, the conclusion is only valid under the condition of homogeneous link qualities, which may be impractical. In this paper, we consider heterogeneous channel conditions based on an analytical approach of extending a verified two dimensional Markov chain model of DCF proposed by Bianchi [10]. From our analytical results, it is shown that 802.11 CSMA/CA can present fairness among hosts with identical link qualities regardless of equal or different data rates applied, which is consistent with the observations of previous works. Our analytical results also demonstrate that the presence of heterogeneous channel conditions can pose significant unfairness of channel sharing even with a link adaptation mechanism since the MCSs (Modulation and Coding Schemes) available are limited.

主出版物標題IEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference
出版狀態已發佈 - 2006
事件IEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference - San Francisco, CA, 美国
持續時間: 2006 11月 272006 12月 1


名字GLOBECOM - IEEE Global Telecommunications Conference


其他IEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference
城市San Francisco, CA

ASJC Scopus subject areas

  • 工程 (全部)


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