JP2015073284A - 通信チャネルを介して送信するための物理層(phy)データユニットを生成する方法、および物理層装置 - Google Patents
通信チャネルを介して送信するための物理層(phy)データユニットを生成する方法、および物理層装置 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
- H04L1/0016—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy involving special memory structures, e.g. look-up tables
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
- H04L1/0005—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes applied to payload information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0002—Modulated-carrier systems analog front ends; means for connecting modulators, demodulators or transceivers to a transmission line
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
- H04L27/2607—Cyclic extensions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
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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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- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
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Abstract
Description
(y+Ntail+p2)DQ=lNQ,k∈l(数11)
これらの式から以下が示唆される。 (y+Ntail+p2)=mLCM(NR,NQ)(数12)
ここで、LCM(a,b)は、aおよびbの最小公倍数である。一実施形態では、
Claims (12)
- 通信チャネルを介して送信するための物理層(PHY)データユニットを生成する方法であって、
任意の数の空間ストリーム、および、任意の数のエンコーダに対応する第1のセットの変調符号化スキーム(MCS)および第2のセットのMCSを提供する段階であって、
前記第1のセットのMCSは(i)第1のチャネル帯域幅に対応し(ii)前記第1のチャネル帯域幅を利用する場合にパディング関連の制約が満たされないMCSを排除し、
前記第2のセットのMCSは(i)第2のチャネル帯域幅に対応し(ii)前記第2のチャネル帯域幅を利用する場合に前記パディング関連の制約が満たされないMCSを排除し、
前記第1のセットのMCSは前記第2のセットのMCSとは異なっており、
前記パディング関連の制約が、(i)OFDMシンボルごとのエンコードされたビット数のエンコーダ数に対する比、およびOFDMシンボルごとのデコードされたビット数のエンコーダ数に対する比の両者が整数である、または(ii)前記OFDMシンボルごとのエンコードされたビット数、および前記OFDMシンボルごとのデコードされたビット数の両者が整数である、というものである、提供する段階と、
前記PHYデータユニットが、前記第1のチャネル帯域幅を有するチャネルを利用して送信される場合には、前記第1のセットのMCSからMCSを選択する段階と、
前記PHYデータユニットが、前記第2のチャネル帯域幅を有するチャネルを利用して送信される場合には、前記第2のセットのMCSからMCSを選択する段階と、
前記任意の数のエンコーダを利用し、かつ前記選択されたMCSに従って、情報ビットをエンコードする段階と、
前記エンコードされた情報ビットを前記任意の数の空間ストリームへとパースする段階と、
前記エンコードされた情報ビットを前記MCSに従って変調する段階と、
前記エンコードされ、変調された情報ビットに基づいて、複数のOFDMシンボルを形成する段階と
を備える方法。 - 前記第1のセットのMCSの提供は、第1のMCSテーブルの提供を含み、
前記第2のセットのMCSの提供は、第2のMCSテーブルの提供を含み、
前記第1のMCSテーブルは前記第2のMCSテーブルとは異なる請求項1に記載の方法。 - 前記第1のセットのMCSおよび前記第2のセットのMCSを提供する段階は、MCSテーブルを提供する段階を有し、
前記MCSテーブルは、前記PHYデータユニットを前記第1のチャネル帯域幅を利用して送信する場合には、前記PHYデータユニットを前記第2のチャネル帯域幅を利用して送信する場合とは異なるように解釈される請求項1に記載の方法。 - 前記方法はさらに、前記情報ビットにパディングビットを追加する段階を備える請求項1から3のいずれか1項に記載の方法。
- 前記情報ビットを複数のエンコーダ用にパースする段階をさらに備え、
前記情報ビットにパディングビットを追加する段階は、前記情報ビットを前記複数のエンコーダ用にパースする前に、第1のパディングビットを追加する段階を有する請求項4に記載の方法。 - 前記情報ビットにパディングビットを追加する段階は、前記情報ビットを前記複数のエンコーダ用にパースした後に、第2のパディングビットを追加する段階を有する請求項5に記載の方法。
- 通信チャネルを介して送信するためのPHYデータユニットを生成する物理層(PHY)装置であって、
任意の数の空間ストリーム、および、任意の数のエンコーダに対応する、第1のセットの変調符号化スキーム(MCS)および第2のセットのMCSの指標を格納するメモリを備え、
前記第1のセットのMCSは(i)第1のチャネル帯域幅に対応し(ii)前記第1のチャネル帯域幅を利用する場合にパディング関連の制約が満たされないMCSを排除し、
前記第2のセットのMCSは(i)第2のチャネル帯域幅に対応し(ii)前記第2のチャネル帯域幅を利用する場合に前記パディング関連の制約が満たされないMCSを排除し、
前記第1のセットのMCSは前記第2のセットのMCSとは異なっており、
前記パディング関連の制約が、(i)OFDMシンボルごとのエンコードされたビット数のエンコーダ数に対する比、およびOFDMシンボルごとのデコードされたビット数のエンコーダ数に対する比の両者が整数である、または(ii)前記OFDMシンボルごとのエンコードされたビット数、および前記OFDMシンボルごとのデコードされたビット数の両者が整数である、というものであり、
i)前記PHYデータユニットが、前記第1のチャネル帯域幅を有するチャネルを利用して送信される場合には、前記第1のセットのMCSからMCSを選択し、ii)前記PHYデータユニットが、前記第2のチャネル帯域幅を有するチャネルを利用して送信される場合には、前記第2のセットのMCSからMCSを選択し、
さらに、
前記任意の数のエンコーダと前記選択されたMCSとに従って、情報ビットをエンコードする複数のエンコーダと、
前記情報ビットを前記任意の数の空間ストリームへとパースするストリーム・パーサと、
前記エンコードされた情報ビットを前記MCSに従って変調する複数の変調器と
を備え、
前記エンコードされ、変調された情報ビットに基づいて、複数のOFDMシンボルを形成する物理層装置。 - 前記メモリは、i)前記第1のセットのMCSを有する第1のMCSテーブルと、ii)前記第2のセットのMCSを有する第2のMCSテーブルとを含み、
前記第1のMCSテーブルは前記第2のMCSテーブルとは異なる請求項7に記載の物理層装置。 - 前記メモリはMCSテーブルを含み、
前記物理層装置は、前記PHYデータユニットを前記第1のチャネル帯域幅を利用して送信する場合には、前記PHYデータユニットを前記第2のチャネル帯域幅を利用して送信する場合とは異なるように、前記MCSテーブルを解釈する請求項7に記載の物理層装置。 - 前記物理層装置はさらに、前記情報ビットにパディングビットを追加するパディングシステムを備える請求項7から9のいずれか1項に記載の物理層装置。
- 前記情報ビットを複数のエンコーダ用にパースするエンコーダ・パーサをさらに備え、
前記パディングシステムは、前記情報ビットを前記複数のエンコーダ用にパースする前に第1のパディングビットを追加する第1のパディングユニットを有する請求項10に記載の物理層装置。 - 前記パディングシステムは、前記情報ビットを前記複数のエンコーダ用にパースした後に、第2のパディングビットを追加する第2のパディングユニットを有する請求項11に記載の物理層装置。
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US22967909P | 2009-07-29 | 2009-07-29 | |
US61/229,679 | 2009-07-29 | ||
US23344509P | 2009-08-12 | 2009-08-12 | |
US61/233,445 | 2009-08-12 | ||
US23721509P | 2009-08-26 | 2009-08-26 | |
US61/237,215 | 2009-08-26 | ||
US26645309P | 2009-12-03 | 2009-12-03 | |
US61/266,453 | 2009-12-03 | ||
US28694809P | 2009-12-16 | 2009-12-16 | |
US61/286,948 | 2009-12-16 | ||
US31284010P | 2010-03-11 | 2010-03-11 | |
US61/312,840 | 2010-03-11 | ||
US31698210P | 2010-03-24 | 2010-03-24 | |
US61/316,982 | 2010-03-24 |
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JP2014225344A Active JP6002976B2 (ja) | 2009-07-29 | 2014-11-05 | 通信チャネルを介して送信するための物理層(phy)データユニットを生成する方法、および物理層装置 |
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EP (3) | EP3182629B1 (ja) |
JP (2) | JP5646624B2 (ja) |
KR (1) | KR101657255B1 (ja) |
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CN104702376B (zh) | 2018-04-13 |
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JP6002976B2 (ja) | 2016-10-05 |
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EP3588822B1 (en) | 2023-11-15 |
EP3588822A1 (en) | 2020-01-01 |
US20140205029A1 (en) | 2014-07-24 |
JP5646624B2 (ja) | 2014-12-24 |
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KR20120060821A (ko) | 2012-06-12 |
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KR101657255B1 (ko) | 2016-09-13 |
US8724720B2 (en) | 2014-05-13 |
US20110026623A1 (en) | 2011-02-03 |
US20160344511A1 (en) | 2016-11-24 |
WO2011014685A3 (en) | 2011-03-24 |
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