講演抄録/キーワード |
講演名 |
2009-07-17 16:40
Improving Performance of WLAN with Joint AP Selection and Power Control ○Suhua Tang・Hiroyuki Yomo・Mehdad N. Shirazi・Tetsuro Ueda・Ryu Miura・Sadao Obana(ATR) RCS2009-72 |
抄録 |
(和) |
As more and more access points (AP) are deployed to enable seamless coverage in a WLAN system, mobile nodes often have a chance to select a suitable AP. Meanwhile APs sharing the same channel are facing co-channel interference. Under the assumption that APs and nodes cooperate with each other, in this paper, we study how to perform joint AP selection and power control. APs measure channel cost and nodes measure link quality. Each node selects an AP that maximizes its potential throughput (calculated from channel cost and link quality). The relationship between estimated and measured channel costs is learned and used in estimating channel cost under new and unemployed power levels. Then, APs choose a power level that achieves the best tradeoff between self-cell channel cost and interference to adjacent cells. Nodes respond to the power changes and re-select an AP if necessary. The initial simulation results confirmed the effectiveness of the proposed schemes. |
(英) |
As more and more access points (AP) are deployed to enable seamless coverage in a WLAN system, mobile nodes often have a chance to select a suitable AP. Meanwhile APs sharing the same channel are facing co-channel interference. Under the assumption that APs and nodes cooperate with each other, in this paper, we study how to perform joint AP selection and power control. APs measure channel cost and nodes measure link quality. Each node selects an AP that maximizes its potential throughput (calculated from channel cost and link quality). The relationship between estimated and measured channel costs is learned and used in estimating channel cost under new and unemployed power levels. Then, APs choose a power level that achieves the best tradeoff between self-cell channel cost and interference to adjacent cells. Nodes respond to the power changes and re-select an AP if necessary. The initial simulation results confirmed the effectiveness of the proposed schemes. |
キーワード |
(和) |
アクセスポイント選択 / 送信電力制御 / チャネル込み具合 / ポテンシャル スループット / / / / |
(英) |
AP selection / Transmit power control / channel utinization / potential throughput / / / / |
文献情報 |
信学技報, vol. 109, no. 130, RCS2009-72, pp. 113-118, 2009年7月. |
資料番号 |
RCS2009-72 |
発行日 |
2009-07-09 (RCS) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
RCS2009-72 |
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