JP6699911B2 - 無線通信システム用圧縮プリアンブル - Google Patents
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Description
本開示は、以下の米国仮特許出願の便益を主張する。2014年6月11日に申請され、「Compressed OFDM Symbol for Padding」と題された米国仮特許出願第62/010,787号
2014年7月22日に申請され、「Compressed OFDM Symbol for Padding and Preamble」と題された米国仮特許出願第62/027,525号
2014年8月7日に申請され、「Compressed OFDM Symbol for Padding and Preamble」と題された米国仮特許出願第62/034,502号
2014年8月26日に申請され、「Compressed OFDM Symbol for Padding and Preamble」と題された米国仮特許出願第62/041,858号
2014年9月16日に申請され、「Compressed OFDM Symbol for Padding and Preamble」と題された米国仮特許出願第62/051,089号
2014年12月3日に申請され、「Compressed OFDM Symbol for Padding and Preamble」と題された米国仮特許出願第62/087,083号
2014年12月19日に申請され、「Compressed OFDM Symbol for Padding and Preamble」と題された米国仮特許出願第62/094,825号
2015年4月16日に申請され、「Compressed OFDM Symbol for Padding and Preamble−v6」と題された米国仮特許出願第62/148,456号
2015年5月29日に申請され、「Compressed OFDM Symbol for Padding and Preamble」と題された米国仮特許出願第62/168,652号
Claims (14)
- 通信チャネルを介した送信のための物理層データユニット(PHYデータユニット)を生成する方法であって、
前記PHYデータユニットのデータ部分のための1つまたは複数のロングOFDMシンボルを生成する段階であって、前記1つまたは複数のロングOFDMシンボルの各々は、第1の数のOFDMトーンで生成され、前記データ部分のための前記1つまたは複数のロングOFDMシンボルを生成する段階は、符号化後に情報ビットが、前記データ部分内の最終ロングOFDMシンボル中の境界まで1つまたは複数のOFDMシンボルを満たすように、1つまたは複数の第1パディングビットを前記情報ビットに追加する段階と、前記情報ビットおよび前記1つまたは複数の第1パディングビットを符号化して、符号化ビットを生成する段階と、前記情報ビットおよび前記1つまたは複数の第1パディングビットを符号化後、1つまたは複数の第2パディングビットを前記符号化ビットに追加して、前記最終ロングOFDMシンボルを生成する段階とを含む段階と、
前記PHYデータユニットのプリアンブルの1つまたは複数のロングトレーニングフィールドのための1つまたは複数のショートOFDMシンボルを生成する段階であって、前記1つまたは複数のショートOFDMシンボルの各々は、OFDMトーンの前記第1の数の分数1/Nである第2の数のOFDMトーンで生成され、前記1つまたは複数のショートOFDMシンボルのトーン間隔は、前記1つまたは複数のロングOFDMシンボルのトーン間隔のN倍であり、Nは1より大きな正の整数であり、前記1つまたは複数のショートOFDMシンボルを生成する段階は、前記プリアンブル内に前記PHYデータユニットが信号拡張フィールドを含むインジケーションを含ませる段階を含む、段階と、
前記境界に基づいて前記信号拡張フィールドの期間を決定する段階と、
(i)前記プリアンブルの前記1つまたは複数のトレーニングフィールドに対応する前記1つまたは複数のショートOFDMシンボルを含むように前記プリアンブルを生成する段階と、(ii)前記1つまたは複数のロングOFDMシンボルを含むように前記データ部分を生成する段階と、(iii)受信デバイスが前記データ部分内の前記最終ロングOFDMシンボルを処理するのに十分なバッファ時間を提供するように前記1つまたは複数のロングOFDMシンボルの後に前記信号拡張フィールドを含む段階とを含む、前記PHYデータユニットを生成する、段階と
を含む、方法。 - 前記プリアンブル内に前記境界のインジケーションを含ませる段階を更に含む、
請求項1に記載の方法。 - 前記1つまたは複数のショートOFDMシンボルのショートOFDMシンボルを生成する段階は、
前記ショートOFDMシンボルに対応するトレーニングシーケンスを受信する段階であって、前記トレーニングシーケンスは、ロングOFDMシンボルのNトーンごとに対応する非ゼロ値を含む、段階と、
係数Nで前記トレーニングシーケンスをアップサンプリングする段階と、
複数のトーンの前記第1の数に対応する第1サイズの逆デジタルフーリエ変換(IDFT)を使用することで前記トレーニングシーケンスを時間領域信号に変換する段階と、
前記時間領域信号を、前記第2の数のOFDMトーンに対応する数のサンプルへと切断する段階とを含む、
請求項1に記載の方法。 - 前記トレーニングシーケンスを送信するのに使用される複数の非ゼロOFDMトーンの出力を増大する段階を更に含む、請求項3に記載の方法。
- 前記トレーニングシーケンスを送信するのに使用される複数の非ゼロOFDMトーンの前記出力を増大する段階は、前記1つまたは複数のロングOFDMシンボルの各々における非ゼロOFDMトーンの数と、前記1つまたは複数のショートOFDMシンボルの各々における非ゼロOFDMトーンの数との比の平方根に対応するスケール係数によって前記出力をスケーリングする段階を含む、請求項4に記載の方法。
- 前記1つまたは複数のロングOFDMシンボルを生成する段階は、トーンの前記第1の数に対応する第1サイズの逆デジタルフーリエ変換(IDFT)を使用して前記1つまたは複数のロングOFDMシンボルを生成する段階を含み、
前記1つまたは複数のショートOFDMシンボルを生成する段階は、トーンの前記第2の数に対応する第2サイズの逆デジタルフーリエ変換(IDFT)を使用して前記1つまたは複数のショートOFDMシンボルを生成する段階を含む、
請求項1に記載の方法。 - 第1圧縮モードが前記1つまたは複数のショートOFDMシンボルを生成するのに使用される場合、1/Nは1/4であり、第2圧縮モードが前記1つまたは複数のショートOFDMシンボルを生成するのに使用される場合、1/Nは1/2である、請求項1に記載の方法。
- 物理層データユニット(PHYデータユニット)のデータ部分のための1つまたは複数のロングOFDMシンボルを生成する段階であって、前記1つまたは複数のロングOFDMシンボルは、第1の数のOFDMトーンで生成される、段階と、
符号化後に情報ビットが、前記データ部分内の最終ロングOFDMシンボル中の境界まで1つまたは複数のOFDMシンボルを満たすように、1つまたは複数の第1パディングビットを前記情報ビットに追加する、段階と、
前記情報ビットおよび前記1つまたは複数の第1パディングビットを符号化して、符号化ビットを生成する、段階と、
前記情報ビットおよび前記1つまたは複数の第1パディングビットを符号化後、1つまたは複数の第2パディングビットを前記符号化ビットに追加して、前記最終ロングOFDMシンボルを生成する、段階と、
前記PHYデータユニットのプリアンブルの1つまたは複数のロングトレーニングフィールドのための1つまたは複数のショートOFDMシンボルを生成する段階であって、前記1つまたは複数のロングOFDMシンボルは、OFDMトーンの前記第1の数の分数1/Nである第2の数のOFDMトーンで生成され、前記1つまたは複数のショートOFDMシンボルのトーン間隔は、前記1つまたは複数のロングOFDMシンボルのトーン間隔のN倍であり、Nは1より大きな正の整数であり、前記1つまたは複数のショートOFDMシンボルを生成する段階は、前記プリアンブル内に前記PHYデータユニットが信号拡張フィールドを含むインジケーションを含ませる段階を含む、段階と、
前記境界に基づいて前記信号拡張フィールドの期間を決定する、段階と、
(i)前記プリアンブルの前記1つまたは複数のトレーニングフィールドに対応する前記1つまたは複数のショートOFDMシンボルを含むように前記プリアンブルを生成する段階と、(ii)前記1つまたは複数のロングOFDMシンボルを含むように前記データ部分を生成する段階と、(iii)受信デバイスが前記データ部分内の前記最終ロングOFDMシンボルを処理するのに十分なバッファ時間を提供するように前記1つまたは複数のロングOFDMシンボルの後に前記信号拡張フィールドを含む段階とを含む、前記PHYデータユニットを生成する、段階と
を実行する、1つまたは複数の集積回路を有するネットワークインタフェースデバイスを備える装置。 - 前記1つまたは複数の集積回路が、
前記プリアンブル内に前記境界のインジケーションを含ませる、
請求項8に記載の装置。 - 前記1つまたは複数の集積回路は、少なくとも、
ショートOFDMシンボルに対応するトレーニングシーケンスを受信する段階であって、前記トレーニングシーケンスは、ロングOFDMシンボルのNトーンごとに対応する非ゼロ値を含む、段階と、
係数Nで前記トレーニングシーケンスをアップサンプリングする段階と、
前記第1の数のトーンに対応する第1サイズの逆デジタルフーリエ変換(IDFT)を使用して前記トレーニングシーケンスを時間領域信号に変換する段階と、
前記時間領域信号を、前記第2の数のOFDMトーンに対応する数のサンプルへと切断する段階と、
を実行することで、前記1つまたは複数のショートOFDMシンボルの前記ショートOFDMシンボルを生成する、請求項8に記載の装置。 - 前記1つまたは複数の集積回路が更に、前記トレーニングシーケンスを送信するのに使用される、複数の非ゼロOFDMトーンの出力を増大する、請求項10に記載の装置。
- 前記1つまたは複数の集積回路が、少なくとも、前記1つまたは複数のロングOFDMシンボルの各々における非ゼロOFDMトーンの数と、前記1つまたは複数のショートOFDMシンボルの各々における非ゼロOFDMトーンの数との比の平方根に対応するスケール係数で前記出力をスケーリングすることで、前記トレーニングシーケンスを送信するのに使用される、複数の非ゼロOFDMトーンの前記出力を増大する、請求項11に記載の装置。
- 前記1つまたは複数の集積回路が、
トーンの前記第1の数に対応する第1サイズの逆デジタルフーリエ変換(IDFT)を使用して前記1つまたは複数のロングOFDMシンボルを生成する段階と、
トーンの前記第2の数に対応する第2サイズの逆デジタルフーリエ変換(IDFT)を使用して前記1つまたは複数のショートOFDMシンボルを生成する段階と
を実行する、請求項8に記載の装置。 - 第1圧縮モードが前記1つまたは複数のショートOFDMシンボルを生成するのに使用される場合、1/Nは1/4であり、第2圧縮モードが前記1つまたは複数のショートOFDMシンボルを生成するのに使用される場合、1/Nは1/2である、請求項8に記載の装置。
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US10958492B2 (en) | 2021-03-23 |
CN106716945B (zh) | 2020-10-09 |
US9768996B2 (en) | 2017-09-19 |
CN106664281A (zh) | 2017-05-10 |
EP3155779A1 (en) | 2017-04-19 |
KR20170018396A (ko) | 2017-02-17 |
CN106664281B (zh) | 2020-07-10 |
JP2017521924A (ja) | 2017-08-03 |
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US20200145268A1 (en) | 2020-05-07 |
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US10904058B2 (en) | 2021-01-26 |
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