Channel segregation based dynamic channel assignment for WLAN

Yuki Matsumura, Shinya Kumagai, Tatsunori Obara, Tetsuya Yamamoto, Fumiyuki Adachi

    研究成果: Conference contribution

    18 被引用数 (Scopus)

    抄録

    In a frequency reusing wireless local area network (WLAN), the co-channel interference (CCI) environment will change when new access points (APs) join the network. Therefore, the user throughput reduces if the available channels are not properly re-allocated. A newly joined AP is designed to measure the CCI levels on the available channels to select the best channel which experiences the lowest CCI (this is referred to as the conventional channel assignment). However, old APs' channels are not anymore the best since the CCI environment has changed after the new one joined. If each AP periodically measures the CCI environment and reselects the channel experiencing the lowest CCI, the throughput may improve. This is called the dynamic channel assignment (DCA). In this paper, we apply the channel segregation based DCA (CS-DCA) to WLAN. In order to examine the channel distribution pattern obtained by CS-DCA, we introduce three indicators: the autocorrelation of channel distribution pattern indicating the degree of stability, the deviation of channel reusing, and the minimum co-channel AP distance. We confirm by computer simulation that the CS-DCA can autonomously form a channel distribution pattern which minimizes the CCI at each AP and that the CS-DCA improves the signal-to-interference-ratio (SIR) compared to the conventional scheme.

    本文言語English
    ホスト出版物のタイトル2012 IEEE International Conference on Communication Systems, ICCS 2012
    ページ463-467
    ページ数5
    DOI
    出版ステータスPublished - 2012 12月 1
    イベント2012 IEEE International Conference on Communication Systems, ICCS 2012 - Singapore, Singapore
    継続期間: 2012 11月 212012 11月 23

    出版物シリーズ

    名前2012 IEEE International Conference on Communication Systems, ICCS 2012

    Other

    Other2012 IEEE International Conference on Communication Systems, ICCS 2012
    国/地域Singapore
    CitySingapore
    Period12/11/2112/11/23

    ASJC Scopus subject areas

    • コンピュータ ネットワークおよび通信

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