JP4690342B2 - リアルタイム通信のための無線ローカルエリアネットワークにおける不定期省電力送出方法 - Google Patents
リアルタイム通信のための無線ローカルエリアネットワークにおける不定期省電力送出方法 Download PDFInfo
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- JP4690342B2 JP4690342B2 JP2006545791A JP2006545791A JP4690342B2 JP 4690342 B2 JP4690342 B2 JP 4690342B2 JP 2006545791 A JP2006545791 A JP 2006545791A JP 2006545791 A JP2006545791 A JP 2006545791A JP 4690342 B2 JP4690342 B2 JP 4690342B2
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/10—Flow control between communication endpoints
- H04W28/14—Flow control between communication endpoints using intermediate storage
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/04—Scheduled access
- H04W74/06—Scheduled access using polling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Small-Scale Networks (AREA)
Description
Claims (10)
- 音声通信しながら、移動局(104,106,200)の無線ローカルエリアネットワークつまりWLANのサブシステムであるWLANサブシステム(204)を省電力動作させる省電力動作方法であって、
前記省電力動作方法は、
アクセスポイント(102,300)が予約トラフィックストリームを受入れる予約受入ステップであって、前記移動局(104,106,200)に送信すべき前記予約トラフィックストリームに対応するデータを一時保存するために、前記アクセスポイント(102,300)は予約バッファ(312)を有し、前記予約バッファ(312)と非予約バッファ(310)は、前記アクセスポイント(102,300)における集合バッファ(309)を形成し、前記非予約バッファ(310)は非予約データを一時保存することと;
前記WLANサブシステム(204)を、低電力状態から立上げるWLAN立上ステップ(712)と;
WLANチャンネルを通じて、前記アクセスポイント(102,300)にポーリングフレームを送信するポーリング送信ステップ(802)であって、前記ポーリングフレームは、前記予約トラフィックストリームを特定するためのトラフィック仕様識別子(613)を含むことと;
前記ポーリングフレームの送信に対応して、前記WLANチャンネルを通じて、前記移動局(104,106,200)が集合応答を受信する集合応答受信ステップであって、前記集合応答は、前記集合バッファ(309)からの少なくとも一つのデータフレームを有し、前記集合応答の受信は、前記集合バッファ(309)が空になるか、サービス期間が終了するまで続くことと;
前記移動局(104,106,200)が前記集合応答を受信すると同時に、前記WLANサブシステム(204)を前記低電力状態に設定するステップ(810)と
を有することを特徴とする、省電力動作方法。 - 前記集合応答は、前記トラフィック仕様識別子(613)に対応して送信される、
請求項1記載の省電力動作方法。 - 前記省電力動作方法は更に、前記ポーリングフレームの送信に対応して、前記WLANチャンネルを通じての前記アクセスポイント(102,300)からの肯定応答フレームを、前記移動局(104,106,200)が受信する肯定応答受信ステップ(803)を有する、
請求項1記載の省電力動作方法。 - 前記省電力動作方法は更に、前記肯定応答フレームの受信に対応して、前記WLANチャンネルを通じて、前記移動局(104,106,200)から前記アクセスポイント(102,300)に肯定応答フレームを送信する肯定応答送信ステップ(806)を有する、
請求項1記載の省電力動作方法。 - 前記集合応答受信ステップは、第2応答フレーム(418)が引続き送信されることを示すように設定されたMORE_DATAビットを有する前記集合応答の第1フレーム(416)のヘッダ(608)を受信することを有し、
前記省電力動作方法は更に、前記移動局(104,106,200)が前記第2応答フレーム(418)を受信する第2応答受信ステップを有する、
請求項1記載の省電力動作方法。 - 前記ポーリング送信ステップは、ヌルフレームを送信することを有する、
請求項1記載の省電力動作方法。 - 前記ヌルフレームの送信は、サービス間隔の始めに起動されたウィンドウタイマーの終了と同時に行われ、
前記サービス間隔は、音声フレームのリアルタイム期間を規定し、
前記ウィンドウタイマーの期間は、前記サービス間隔よりも短い、
請求項6記載の省電力動作方法。 - 前記省電力動作方法は更に、前記WLAN立上ステップの後に、前記WLANチャンネルを取得するチャンネル取得ステップを備え、
前記チャンネル取得ステップは、前記WLANチャンネルの取合いによって行われる、
請求項1記載の省電力動作方法。 - 前記WLANチャンネルの取合いは、搬送波検知によって行われる、
請求項8記載の省電力動作方法。 - 音声通信しながら、移動局(104,106,200)によって、無線ローカルエリアネットワークであるWLANにおけるアクセスポイント(102,300)による省電力動作を、容易にする省電力動作方法であって、前記省電力動作方法は、
前記アクセスポイント(102,300)が予約トラフィックストリームを受入れる予約受入ステップであって、前記移動局(104,106,200)に送信すべき前記予約トラフィックストリームに対応するデータを一時保存するために、前記アクセスポイント(102,300)は予約バッファ(312)を有し、前記予約バッファ(312)と非予約バッファ(310)は、前記アクセスポイント(102,300)における集合バッファ(309)を形成し、前記非予約バッファ(310)は非予約データを一時保存することと;
前記アクセスポイント(102,300)が、前記移動局(104,106,200)からのポーリングフレームを、WLANチャンネルを通じて受信するポーリング受信ステップであって、前記ポーリングフレームは、前記予約トラフィックストリームを特定することと;
前記移動局(104,106,200)に送るべき一時保存したデータがあるか否か、前記集合バッファ(309)をチェックするステップと;
前記WLANチャンネルを通じて、前記移動局(104,106,200)に集合応答を送信する集合応答送信ステップであって、前記アクセスポイント(102,300)が前記集合応答を送信し、前記集合応答は、前記集合バッファ(309)の中のデータを有し、前記集合応答の送信は、前記集合バッファ(309)が空になるか、サービス期間に達するまで続くことと
を有することを特徴とする、省電力動作方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/741,651 US6917598B1 (en) | 2003-12-19 | 2003-12-19 | Unscheduled power save delivery method in a wireless local area network for real time communication |
US10/741,651 | 2003-12-19 | ||
PCT/US2004/041796 WO2005066914A1 (en) | 2003-12-19 | 2004-12-14 | Unscheduled power save delivery method in a wireless local area network for real time communication |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007515903A JP2007515903A (ja) | 2007-06-14 |
JP4690342B2 true JP4690342B2 (ja) | 2011-06-01 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006545791A Expired - Fee Related JP4690342B2 (ja) | 2003-12-19 | 2004-12-14 | リアルタイム通信のための無線ローカルエリアネットワークにおける不定期省電力送出方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US6917598B1 (ja) |
JP (1) | JP4690342B2 (ja) |
CN (1) | CN100481790C (ja) |
BR (1) | BRPI0417633A (ja) |
CA (1) | CA2550394C (ja) |
WO (1) | WO2005066914A1 (ja) |
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CN1926591A (zh) | 2007-03-07 |
CN100481790C (zh) | 2009-04-22 |
US6917598B1 (en) | 2005-07-12 |
JP2007515903A (ja) | 2007-06-14 |
CA2550394A1 (en) | 2005-07-21 |
WO2005066914A1 (en) | 2005-07-21 |
CA2550394C (en) | 2009-09-15 |
BRPI0417633A (pt) | 2007-03-27 |
US20050136833A1 (en) | 2005-06-23 |
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