JP2009527996A - 無線通信のマルチプル多重化方式をサポートする方法及び装置 - Google Patents
無線通信のマルチプル多重化方式をサポートする方法及び装置 Download PDFInfo
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Abstract
Description
本特許出願は、本願の譲受人に譲渡され、参照により本明細書に明白に組み込まれる、2006年2月21日出願の仮出願第60/775,443号の”Wireless Communication System and Method”と仮出願第60/775,693号の”DO Communication System and Method”とに基づいて優先権を主張するものである。
無線通信システムにおけるデータを効率的に送信する技術がここで説明される。この技術は、現存する設計について旧版に互換性のあるスロット構造を用いる。また、この技術は、直交周波数分割多重化(OFDM)を用いることで、空間技術及び/又は他の進歩した通信技術を効率的にサポートする。
ここで記述される送信技術は、CDMA、TDMA、FDMA、OFDMA及びSC−FDMAシステムのような種々の無線通信システムで用いられることができる。“システム”及び“ネットワーク”なる用語はしばしば互換性をもって使用される。CDMAシステムはcdma2000、ユニバーサル地上放送アクセス(UTRA)、発展UTRA(E−UTRA)などの放送技術を実装することができる。cdma2000は、IS−2000、IS−95及びIS−856規格をカバーする。UTRAは広帯域CDMA(W−CDMA)及びローチップレート(LCR)を含む。TDMAシステムは移動通信グローバルシステム(GSM)のような放送技術を実装することができる。OFDMAシステムは、ロングタームエボリューション(LTE)(これはE−UTRAの一部)、IEEE802.20、Flash−OFDM(登録商標)などの放送技術を実装することができる。UTRA、E−UTRA、GSM及びLTEは“第3世代共同プロジェクト”(3GPP)と称する組織からの文書に記述されている。cdma2000は、“第3世代共同プロジェクト2”(3GPP2)と称された組織からの文書に記述されている。これら種々の放送技術及び規格は当該技術分野で知られている。
パイロットパターンは、マルチプルパイロットパターンから各々の端末について選択されることができる(ブロック816)。代替的には、各々の端末は適切なパイロットパターンを選択し、選択されたパイロットパターンをアクセスポイントに伝達することができる。マルチプルパイロットパターンは異なる遅延拡散をサポートしてもよく、パイロットパターンは各々の端末について、その端末についての期待遅延拡散に基づき、選択されることができる。マルチプルパイロットパターンはまた異なる空間ランクをサポートし、パイロットパターンは各々の端末について、その端末についての空間ランクに基づいて選択されることができる。各々のパイロットトーンがパイロットに用いられる1つのシンボル周期における1つの副搬送波に対応しつつ、各々のパイロットパターンはタイルを横切るように配置されたパイロットトーンのマルチプルクラスタを有してもよい。各々のパイロットパターンについてのパイロットトーンのマルチプルクラスタは、例えば図6Aないし図6Gに示すように、タイルを横切るように異なる周波数配置及び/又は異なる時間配置で配置されてもよい。
Claims (41)
- 直交周波数分割多重化(OFDM)に利用可能で、符号分割多重化(CDM)で送信されるトラヒックデータ及びシグナリングに用いられる時間周波数リソースを除外した時間周波数リソースを決定し、OFDMに利用可能な前記時間周波数リソースを少なくとも1つの端末に割り当てる少なくとも1つのプロセッサと、
前記少なくとも1つのプロセッサに結合された1つのメモリと
を備える装置。 - 前記少なくとも1つのプロセッサは、OFDMに利用可能な前記時間周波数リソースをマルチプルタイルに分割し、前記マルチプルタイルの少なくとも1つに少なくとも1つの端末に割り当てる、請求項1に記載の装置。
- 各々のタイルは非直交形状を有する時間周波数リソースのブロックに対応する、請求項2に記載の装置。
- 前記少なくとも1つのプロセッサは、OFDMに利用可能な前記時間周波数リソースを少なくとも2つの異なる非直交形状のマルチプルタイルに分割する、請求項2に記載の装置。
- 2つの前記異なる非直交形状は鏡面対称を有する、請求項4に記載の装置。
- 鏡面対称を有する前記2つの異なる非直交形状は、鏡面対称のパイロットパターンに関連づけられる、請求項5に記載の装置。
- 前記少なくとも1つのプロセッサは、前記少なくとも1つの端末に割り当てられた各々のタイルについて、OFDMシンボルヌメロロジーに基づきOFDMシンボルを処理する請求項2に記載の装置。
- 各々のタイルは第1のOFDMシンボルヌメロロジーに基づき定義された時間周波数リソースの第1の部分と、第2のOFDMシンボルヌメロロジーに基づき定義された時間周波数の第2の部分とを有する、請求項2に記載の装置。
- 各々のタイルはさらに、第1のOFDMシンボルヌメロロジーに基づき定義された時間周波数の第3の部分を含み、前記第2の部分は前記第1及び第3の部分の間に配置される、請求項8に記載の装置。
- 前記少なくとも1つのプロセッサは、各々の端末に、前記マルチプルタイルの異なるものを時間外に割り当て周波数ホッピングを達成する、請求項1に記載の装置。
- 前記少なくとも1つのプロセッサは、マルチプルパイロットパターンの中から、各々の端末について、パイロットパターンを選択する、請求項1に記載の装置。
- 前記マルチプルパイロットパターンは、少なくとも2つの異なる遅延拡散をサポートし、前記少なくとも1つのプロセッサは、前記端末について期待遅延拡散に基づき各々の端末につき前記パイロットパターンを選択する、請求項11に記載の装置。
- 前記マルチプルパイロットパターンは、少なくとも2つの異なる空間ランクをサポートし、前記少なくとも1つのプロセッサは、前記端末についての空間ランクに基づき各々の端末につき前記パイロットパターンを選択する、請求項11に記載の装置。
- 前記マルチプルパイロットパターンの各々は、時間周波数リソースのブロックに対応したタイルを横切るように配置されたパイロットトーンのマルチプルクラスタを有し、各々のパイロットトーンは、パイロットに用いられる1つのシンボル周期の1つの副搬送波に対応する、請求項11に記載の装置。
- 各々のパイロットトーンに関する前記パイロットトーンのマルチプルクラスタは、タイルを横切る少なくとも2つの周波数位置に配置される、請求項14に記載の装置。
- 各々のパイロットパターンに関する前記パイロットトーンのマルチプルクラスタは、タイルを横切る少なくとも2つの時間位置に配置される、請求項14に記載の装置。
- 前記少なくとも1つのプロセッサは、OFDMに利用可能な時間周波数リソースを横切る共通パイロットを送信する、請求項1に記載の装置。
- 前記少なくとも1つのプロセッサは、各々の端末に、前記端末に割り当てられた前記少なくとも1つのタイルでデータを送り、前記少なくとも1つのタイルで前記端末につき選択されたパイロットパターンに基づいて、各々の端末にパイロットを送信する、請求項2に記載の装置。
- 前記少なくとも1つのプロセッサは、各々の端末から、前記端末に割り当てられた前記少なくとも1つのタイルでデータを受信し、各々の端末から、前記少なくとも1つのタイルで前記端末につき選択されたパイロットパターンに基づいて、パイロットを受信する、請求項2に記載の装置。
- 直交周波数分割多重化(OFDM)に利用可能で、符号分割多重化(CDM)で送信されるトラヒックデータ及びシグナリングに用いられる時間周波数を除外した時間周波数リソースを決定すること、及び
OFDMに利用可能な前記時間周波数リソースを少なくとも1つの端末に割り当てること
を備える方法。 - OFDMに利用可能な前記時間周波数リソースを割り当てることは、
OFDMに利用可能な前記時間周波数リソースをマルチプルタイルに分割すること、及び
少なくとも1つの前記マルチプルタイルを前記少なくとも1つの端末に割り当てること
ことを備える請求項20に記載の方法。 - 前記少なくとも1つの端末に割り当てられた各々のタイルにつき、マルチプルOFDMシンボルヌメロロジーに基づきOFDMシンボルを処理することをさらに備える請求項21に記載の方法。
- マルチプルパイロットパターンの中からパイロットパターンを選択することをさらに備える請求項20に記載の方法。
- 直交周波数分割多重化(OFDM)に利用可能で、符号分割多重化(CDM)で送信されるトラヒックデータ及びシグナリングに用いられる時間周波数リソースを除外した時間周波数リソースを決定する手段と、
OFDMに利用可能な前記時間周波数リソースを少なくとも1つの端末に割り当てる手段と、
を備える装置。 - OFDMに利用可能な前記時間周波数リソースを割り当てる前記手段は、
OFDMに利用可能な前記時間周波数リソースをマルチプルタイルに分割し、各々のタイルは時間周波数リソースのブロックに対応する手段と、
少なくとも1つの前記マルチプルタイルを、前記少なくとも1つの端末の各々に割り当てる手段と
からなる請求項24に記載の装置。 - 前記少なくとも1つの端末に割り当てられた各々のタイルにつき、マルチプルOFDMシンボルヌメロロジーに基づき、OFDMシンボルを処理する手段
をさらに備える請求項25に記載の装置。 - マルチプルパイロットパターンの中から、各々の端末につきパイロットパターンを選択する手段
をさらに備える請求項24に記載の装置。 - 直交周波数分割多重化(OFDM)に利用可能で、符号分割多重化(CDM)で送信されるトラヒックデータ及びシグナリングに用いられる時間周波数リソースを除外した時間周波数リソースを決定し、
OFDMに利用可能な前記時間周波数リソースを少なくとも1つの端末に割り当てる
命令を格納するプロセッサが読み取り可能な記録媒体。 - マルチプルパイロットパターンの中から各々の端末につきパイロットパターンを選択する命令をさらに格納する請求項28に記載のプロセッサが読み取り可能な記録媒体。
- 直交周波数分割多重化(OFDM)に利用可能な時間周波数リソースから選択され、符号分割多重化(CDM)で送信されるトラヒックデータ及びシグナリングに用いられる時間周波数リソースを除外した時間周波数リソースの割当を受信し、かつ前記割当の中の前記時間周波数リソースを介してデータを交換する少なくとも1つのプロセッサと、
前記少なくとも1つのプロセッサに結合された1つのメモリと
を備える装置。 - 前記割当は、非直交形状を有する時間周波数リソースのブロックにつきなされる請求項30に記載の装置。
- 前記少なくとも1つのプロセッサは、マルチプルOFDMシンボルヌメロロジーに基づきOFDMシンボルを処理し、前記割当における前記時間周波数リソースを介してデータを交換する請求項30に記載の装置。
- 前記少なくとも1つのプロセッサは、マルチプルパイロットパターンの中から選択されたパイロットパターンに基づいてパイロットシンボルを処理する請求項30に記載の装置。
- 前記パイロットパターンは、前記割当における前記時間周波数リソースに対応するタイルを横切るように配置されたパイロットトーンのマルチプルクラスタを有し、
ここで前記少なくとも1つのプロセッサは、少なくとも1つのアンテナから、前記マルチプルクラスタの各々について少なくとも1つのパイロットトーンで、少なくとも1つのパイロットシンボルを送信し、1つのパイロットシンボルは各々のクラスタの各々のアンテナからのものである、
請求項33に記載の装置。 - 前記パイロットパターンは、前記割当における前記時間周波数リソースに対応するタイルを横切るように配置されたパイロットトーンのマルチプルクラスタを有し、
ここで前記少なくとも1つのプロセッサは、前記マルチプルクラスタの各々における少なくとも1つのデータストリームにつき、少なくとも1つのパイロットシンボルを送信し、各々のパイロットシンボル(既出を受けているのか不明)は、直交符号でクラスタのすべてのパイロットトーンを横切るように拡散される、
請求項33に記載の装置。 - 直交周波数分割多重化(OFDM)に利用可能な時間周波数リソースから選択され、符号分割多重化(CDM)で送信されるトラヒックデータ及びシグナリングに用いられる時間周波数リソースを除外した時間周波数リソースの割当を受信すること、及び
前記割当における前記時間周波数リソースを介してデータを交換すること
を備える方法。 - 前記データを交換することは、
マルチプルOFDMシンボルヌメロロジーに基づきOFDMシンボルを処理し、前記割当における前記時間周波数リソースを介してデータを交換することを備える、請求項36に記載の方法。 - さらに、
マルチプルパイロットパターンの中から選択されたパイロットパターンに基づきパイロットシンボルを処理することを備える、請求項36に記載の方法。 - 直交周波数分割多重化(OFDM)に利用可能な時間周波数リソースから選択され、符号分割多重化(CDM)で送信されるトラヒックデータ及びシグナリングに用いられる時間周波数リソースを除外した時間周波数リソースの割当を受信する手段と、
前記割当の中の前記時間周波数リソースを介してデータを交換する手段と
を備える装置。 - 前記データを交換する手段は、
マルチプルOFDMシンボルヌメロロジーに基づきOFDMシンボルを処理し、前記割当における前記時間周波数リソースを介してデータを交換する手段
を備える、請求項39に記載の装置。 - さらに、
マルチプルパイロットパターンの中から選択されたパイロットパターンに基づきパイロットシンボルを処理する手段を備える、請求項39に記載の装置。
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