JP2015510312A - 無線通信システムにおけるデータ送信方法及び装置 - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/022—Site diversity; Macro-diversity
- H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
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- H04W72/04—Wireless resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0689—Hybrid systems, i.e. switching and simultaneous transmission using different transmission schemes, at least one of them being a diversity transmission scheme
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0697—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using spatial multiplexing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
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- H04W76/00—Connection management
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/15—Setup of multiple wireless link connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0014—Three-dimensional division
- H04L5/0023—Time-frequency-space
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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Abstract
Description
また、本発明は、仮想送信ポートを含む無線通信システムの基地局から端末にデータを効率的に送信する方法及び装置を提供する。
図2のように2個のサブセルから端末に送信されるチャネルがそれぞれ、
まず、<数式3>を満足する同一なVポート対を有する端末は、協力送信モードに設定される。この場合には、該当端末は、必ず協力送信モードで送信すべきであり、スケジューリング時に全ての協力送信サブセルが同一な周波数領域で同一信号を該当端末に送信するようにスケジューリングされなければならない。
130 デジタル部
131 プリコーディング部
133 仮想送信ポート生成ブロック
150 アンテナ部
Claims (14)
- 複数個のサブセルで構成される多重セルをサポートする無線通信システムにおけるデータを送信する方法であって、
前記複数個のサブセルに対して、それぞれ、少なくとも一つの仮想送信ポートを接続するステップと、
前記複数個のサブセルのうち少なくとも2個のサブセルと端末との間のチャネル状態に基づいて前記端末に対する送信モードを決定するステップと、
前記決定された送信モードに基づいて、該当するサブセルと接続された少なくとも一つの仮想送信ポートを通じて前記端末にサブセル別データを送信するステップとを含むことを特徴とするデータ送信方法。 - 前記少なくとも一つの仮想送信ポートを通じて送信されるデータは、
送信のために入力されたデータに、プリコーディングのためのプリコーディングマトリックスと仮想送信ポート接続のための特定マトリックスが乗算された信号であることを特徴とする請求項1に記載のデータ送信方法。 - 前記特定マトリックスは、前記サブセル別データと共に伝送される参照信号が各仮想送信ポートで同一な出力で混合される条件を満足することを特徴とする請求項2に記載のデータ送信方法。
- 前記特定マトリックスは、前記端末が各サブセルから受信する参照信号の和が前記仮想送信ポートを利用しない既存のシステムで各サブセルから受信する参照信号の和と同一な条件を満足することを特徴とする請求項2に記載のデータ送信方法。
- 各サブセルは、他のサブセルと異なる仮想送信ポートに接続されることを特徴とする請求項1に記載のデータ送信方法。
- 各サブセルは、他のサブセルと同一な仮想送信ポートと接続されることを特徴とする請求項1に記載のデータ送信方法。
- 前記端末の送信モードは、前記端末が前記少なくとも2個のサブセルのうちサービングサブセルから受信した信号の信号強度と隣接サブセルから受信した信号の信号強度との間の差がしきい値以下である隣接サブセルが存在する場合、前記サービングサブセルと前記隣接サブセルが同一な周波数リソースを利用して前記端末にサブセル別データ送信を実行する協力モードを含むことを特徴とする請求項1に記載のデータ送信方法。
- 複数個のサブセルで構成される多重セルをサポートする無線通信システムにおけるデータを送信する基地局であって、
複数のアンテナを備えて端末に無線ネットワークを通じてサブセル別データを送信する送信部と、
前記複数個のサブセルに対して、それぞれ、少なくとも一つの仮想送信ポートを接続し、前記複数個のサブセルのうち少なくとも2個のサブセルと端末との間のチャネル状態に基づいて前記端末に対する送信モードを決定し、前記決定された送信モードに基づいて該当するサブセルと接続した少なくとも一つの仮想送信ポートを通じて前記端末にサブセル別データを送信する動作を制御する制御部とを含むことを特徴とする基地局。 - 前記少なくとも一つの仮想送信ポートを通じて送信されるデータは、
送信のために入力されたデータにプリコーディングのためのプリコーディングマトリックスと仮想送信ポート接続のための特定マトリックスが乗算された信号であることを特徴とする請求項8に記載の基地局。 - 前記特定マトリックスは、前記サブセル別データと共に伝送される参照信号が各仮想送信ポートから同一な出力で混合される条件を満足することを特徴とする請求項9に記載の基地局。
- 前記特定マトリックスは、前記端末が各サブセルから受信する参照信号の和が前記仮想送信ポートを利用しない既存のシステムで各サブセルから受信する参照信号の和と同一な条件を満足することを特徴とする請求項9に記載の基地局。
- 各サブセルは、他のサブセルと異なる仮想送信ポートに接続されることを特徴とする請求項8に記載の基地局。
- 各サブセルは、他のサブセルと同一な仮想送信ポートと接続されることを特徴とする請求項8に記載の基地局。
- 前記端末の送信モードは、前記端末が前記少なくとも2個のサブセルのうちサービングサブセルから受信した信号の信号強度と隣接サブセルから受信した信号の信号強度との間の差がしきい値以下である隣接サブセルが存在する場合、前記サービングサブセルと前記隣接サブセルが同一な周波数リソースを利用して前記端末にサブセル別データ送信を実行する協力モードを含むことを特徴とする請求項8に記載の基地局。
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CN105471790B (zh) * | 2014-08-04 | 2020-05-15 | 北京三星通信技术研究有限公司 | 适用于分布式天线系统的协作传输方法、基站及终端 |
US10348386B1 (en) * | 2018-08-09 | 2019-07-09 | At&T Intellectual Property I, L.P. | Facilitation of user equipment specific compression of beamforming coefficients for fronthaul links for 5G or other next generation network |
US11464017B1 (en) | 2021-03-25 | 2022-10-04 | At&T Intellectual Property I, L.P. | Facilitation of beamforming utilizing interpolation for 5G or other next generation network |
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US9357529B2 (en) | 2016-05-31 |
US20140357286A1 (en) | 2014-12-04 |
EP2806574A1 (en) | 2014-11-26 |
EP2806574A4 (en) | 2015-09-09 |
WO2013109053A1 (ko) | 2013-07-25 |
CN104054279A (zh) | 2014-09-17 |
CN104054279B (zh) | 2018-05-11 |
EP2806574B1 (en) | 2022-10-19 |
KR101873596B1 (ko) | 2018-08-02 |
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JP6143790B2 (ja) | 2017-06-07 |
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