講演抄録/キーワード |
講演名 |
2011-03-03 09:00
New wakeup transceiver for on-demand wireless LAN ○Suhua Tang(ATR)・Hiroyuki Yomo(Kansai Univ.)・Yoshihisa Kondo・Sadao Obana(ATR) NS2010-184 |
抄録 |
(和) |
(まだ登録されていません) |
(英) |
Access points (AP) of wireless LANs are widely deployed to provide mobile access to the Internet. These APs, always powered on and consuming a large amount of power in total, actually are idle during much of the time. Although previous protocol-based sleep-wakeup solutions can partially solve this problem, the large wakeup delay remains a challenge. In this paper we propose a new wakeup transceiver to greatly reduce the wakeup delay so as to realize on-demand wireless LANs. In our model, each AP is equipped with a low-power wakeup receiver and has a unique ID. All modules of an AP in the idle state, except the wakeup receiver, are put into sleep, and are woken up when a node sends a specific ID through the wakeup transceiver. In this design, the wakeup transceiver shares the antenna with wireless LAN device in the same 2.4GHz band. Be-sides the basic requirement of low-power consumption, there are two additional communication challenges for the wakeup transceiver: (i) how to make the wakeup signal co-exist with WLAN signals, and, (ii) how to ensure a very low false wakeup probability in a scenario where the number of WLAN signals is overwhelming. We suggest using On-Off Keying (OOK) with Manchester codes (MC) and rate constraint for (i) and exploiting the property of OOK+MC in signal recognition for (ii). The extensive simulation evaluation results confirm that the proposed scheme has good performance in both bit error rate and false wakeup probability. |
キーワード |
(和) |
/ / / / / / / |
(英) |
On-demand wireless LAN / power saving / wakeup receiver / co-existence / signal recognition / / / |
文献情報 |
信学技報, vol. 110, no. 448, NS2010-184, pp. 117-122, 2011年3月. |
資料番号 |
NS2010-184 |
発行日 |
2011-02-24 (NS) |
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 |
NS2010-184 |
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