JP5860011B2 - アップリンク伝送時に、多重符号語ベースの単一ユーザmimoが用いられるシステムにおけるphich割当及び参照信号生成方法 - Google Patents
アップリンク伝送時に、多重符号語ベースの単一ユーザmimoが用いられるシステムにおけるphich割当及び参照信号生成方法 Download PDFInfo
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Description
第1場合は、既存のアップリンクSU−MIMOを具現するにあって、伝送アンテナ(一連の仮想アンテナ(virtual antenna)または物理アンテナ(physical antenna))の個数または仮想アンテナの個数または伝送レイヤー数を表すmで定義される(例えば、mは、2または4になることもでき、1、2、3または4になることもできる。)UEの伝送アンテナ/レイヤー構成(tx antenna/layer configuration)によってp(p<=m)個の受信データ信号列の復調(demodulation)と複号化(decoding)のためのチャネル推定を提供するRSを必要とする。この時、p個のRSのうちq(q<=p)個のRSに対する伝送リソースは、任意のOFDM、SC−FDMAまたはクラスターSC−FDMAシンボル(該シンボルは、TDMで一つのOFDMまたはSC−FDMAまたはクラスターSC−FDMAシンボルとして指定されることもでき、または、複数個のOFDMまたはSC−FDMAまたはクラスターSC−FDMAシンボルとしてRS伝送のために指定されることもできる。)において周波数サブキャリア上のデータ伝送のための領域の長さを有するCAZAC(Constant Amplitude Zero Autocorrelation)系列の基本シーケンス(base sequence)や1RB/2RBの場合に対する低い相関(low correlation)特性のQPSKベースのコンピュータ生成シーケンス(computer−generated sequence)の巡回シフトバージョンとして指定されることができる。
また、端末(MS:Mobile Station)は、ユーザ機器(UE:User Equipment)に該当するもので、移動端末(Mobile Terminal)、SS(Subscriber Station)、MSS(Mobile Subscriber Station)などの用語に代替可能である。
特許請求の範囲において引用関係が明示されていない請求項を結合して実施例を構成したり、出願後の補正によって新しい請求項として含めることもできることは明らかである。
Claims (10)
- ユーザ機器が基地局から物理ハイブリッドARQ指示チャネル(PHICH)を受信する方法であって、
アップリンクリソースを介して、前記基地局に前記ユーザ機器の複数のデータ単位を送信するステップと、
前記送信されたデータ単位のそれぞれに対するACK/NACKを伝送する前記PHICHを受信するためのPHICHリソースを決定するステップと、
前記決定されたPHICHリソースを介して前記基地局から前記PHICHを受信するステップと、
を有し、
前記PHICHリソースは、PHICHグループ内のPHICHグループインデックスと直交シーケンスインデックスとの対により識別され、
- 前記PHICHリソースの決定に対するインデックスは、対応するアップリンク送信の物理リソースブロックの最も低いインデックスとして定義される、請求項1に記載のPHICH受信方法。
- 前記データ単位のそれぞれは、符号語に対応する、請求項1に記載のPHICH受信方法。
- 前記複数のデータ単位は、時間単位内に、前記基地局から受信されたアップリンク承認情報に基づいて同時に送信される、請求項1に記載のPHICH受信方法。
- 前記ユーザ機器は、前記複数のデータ単位を送信するために、単一ユーザMIMOモードで動作する、請求項1に記載のPHICH受信方法。
- 基地局がユーザ機器に物理ハイブリッドARQ指示チャネル(PHICH)を送信する方法であって、
前記ユーザ機器から複数のデータ単位を受信するステップと、
前記送信されたデータ単位のそれぞれに対するACK/NACKを伝送する前記PHICHを、PHICHリソースを介して前記ユーザ機器に送信するステップと、
を有し、
前記PHICHリソースは、PHICHグループ内のPHICHグループインデックスと直交シーケンスインデックスとの対により識別され、
- 前記PHICHリソースの決定に対するインデックスは、対応するアップリンク送信の物理リソースブロックの最も低いインデックスとして定義される、請求項6に記載のPHICH送信方法。
- 前記データ単位のそれぞれは、符号語に対応する、請求項6に記載のPHICH送信方法。
- 前記複数のデータ単位は、1つのアップリンク承認信号に応答して受信される、請求項6に記載のPHICH送信方法。
- 前記基地局は、単一ユーザMIMOモードで動作する前記ユーザ機器をサポートする、請求項6に記載のPHICH送信方法。
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US8282708P | 2008-07-22 | 2008-07-22 | |
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JP2013178391A Active JP5860011B2 (ja) | 2008-07-22 | 2013-08-29 | アップリンク伝送時に、多重符号語ベースの単一ユーザmimoが用いられるシステムにおけるphich割当及び参照信号生成方法 |
JP2015245349A Active JP6178393B2 (ja) | 2008-07-22 | 2015-12-16 | アップリンク伝送時に、多重符号語ベースの単一ユーザmimoが用いられるシステムにおけるphich割当及び参照信号生成方法 |
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EP (2) | EP3322107B1 (ja) |
JP (3) | JP5357254B2 (ja) |
KR (1) | KR101625861B1 (ja) |
CN (2) | CN102106097B (ja) |
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CN102106097A (zh) | 2011-06-22 |
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