JP2011509017A - セル間干渉低減方法 - Google Patents
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- 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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- H04B7/0413—MIMO systems
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- H—ELECTRICITY
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- 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
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- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0491—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more sectors, i.e. sector diversity
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- 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
- H04B7/0621—Feedback content
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- 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
- H04B7/0621—Feedback content
- H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
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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
- H04B7/0621—Feedback content
- H04B7/0634—Antenna weights or vector/matrix coefficients
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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
- H04B7/0636—Feedback format
- H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
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- H—ELECTRICITY
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- 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
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03891—Spatial equalizers
- H04L25/03898—Spatial equalizers codebook-based design
- H04L25/03904—Spatial equalizers codebook-based design cooperative design, e.g. exchanging of codebook information between base stations
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- 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
- H04B7/0452—Multi-user MIMO systems
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Abstract
【選択図】図3
Description
Claims (10)
- 端末が多重セル環境でセル間干渉を低減する方法であって、
サービング基地局から受信された信号に干渉を与える一つ以上の隣接基地局からのチャンネル信号を測定するステップと、
前記測定されたチャンネル信号に基づいて決定される、前記干渉が最大化する第1プリコーディング行列インデックス及び前記干渉が最小化する第2プリコーディング行列インデックスのうち一つ以上を算定するステップと、
前記第1プリコーディング行列インデックス及び第2プリコーディング行列インデックスのうち一つ以上を、対応する基地局識別子情報と共に前記サービング基地局に伝送するステップと、
を含むことを特徴とするセル間干渉低減方法。 - 前記第1プリコーディング行列インデックスは、前記一つ以上の隣接基地局による前記第1プリコーディング行列インデックスに対応するプリコーディング行列の使用を制限することを要請するためのものである、請求項1に記載のセル間干渉低減方法。
- 前記第2プリコーディング行列インデックスは、前記一つ以上の隣接基地局による前記第2プリコーディング行列インデックスに対応するプリコーディング行列の使用を推奨するためのものである、請求項1に記載のセル間干渉低減方法。
- 前記サービング基地局に伝送するステップにおいて、
前記第1プリコーディング行列インデックス及び前記第2プリコーディング行列インデックスに加えて、前記一つ以上の隣接基地局からの干渉量情報を伝送する、請求項1に記載のセル間干渉低減方法。 - 前記第1プリコーディング行列インデックス及び前記第2プリコーディング行列インデックスをそれぞれ、前記測定されたチャンネル信号に基づいて、前記干渉が最大化する順にまたは前記干渉が最小化する順に2個以上ずつ算定して、前記サービング基地局に伝送する、請求項1に記載のセル間干渉低減方法。
- 前記サービング基地局に前記基地局識別子情報と共に伝送された第1プリコーディング行列インデックス及び第2プリコーディング行列インデックスは、前記サービング基地局を通じて前記基地局識別子情報に対応する隣接基地局に伝送される、請求項1に記載のセル間干渉低減方法。
- 特定基地局が多重セル環境でセル間干渉を低減する方法であって、
端末から、一つ以上の隣接基地局のチャンネル信号が、前記特定基地局が前記端末に伝送する信号に干渉を最大限に与えるようにする第1プリコーディング行列インデックス及び干渉を最小限に与えるようにする第2プリコーディング行列インデックスのうち一つ以上を、対応する基地局識別子情報と共に受信するステップと、
前記第1プリコーディング行列インデックス及び前記第2プリコーディング行列インデックスのうち一つ以上を、前記基地局識別子情報に基づいて前記一つ以上の隣接基地局に伝達するステップと、
を含むことを特徴とするセル間干渉低減方法。 - 前記第1プリコーディング行列インデックスは、前記一つ以上の隣接基地局による前記第1プリコーディング行列インデックスに対応するプリコーディング行列の使用を制限することを要請するためのものである、請求項7に記載のセル間干渉低減方法。
- 前記第2プリコーディング行列インデックスは、前記一つ以上の隣接基地局による前記第2プリコーディング行列インデックスに対応するプリコーディング行列の使用を推奨するためのものである、請求項7に記載のセル間干渉低減方法。
- 前記端末から受信するステップにおいて、
前記第1プリコーディング行列インデックス及び前記第2プリコーディング行列インデックスに加えて、前記一つ以上の隣接基地局からの干渉量情報を受信する、請求項7に記載のセル間干渉低減方法。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
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KR20070141690 | 2007-12-31 | ||
KR10-2007-0141690 | 2007-12-31 | ||
KR1020080120609A KR100991793B1 (ko) | 2007-12-31 | 2008-12-01 | 셀간 간섭 감소 방법 |
KR10-2008-0120609 | 2008-12-01 | ||
PCT/KR2008/007800 WO2009084905A2 (en) | 2007-12-31 | 2008-12-30 | Method for reducing inter-cell interference |
Publications (2)
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JP2011509017A true JP2011509017A (ja) | 2011-03-17 |
JP5134094B2 JP5134094B2 (ja) | 2013-01-30 |
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Application Number | Title | Priority Date | Filing Date |
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JP2010541389A Expired - Fee Related JP5032672B2 (ja) | 2007-12-31 | 2008-12-30 | セル間干渉低減方法 |
JP2010540591A Expired - Fee Related JP5134094B2 (ja) | 2007-12-31 | 2008-12-30 | セル間干渉低減方法 |
JP2010540593A Pending JP2011509571A (ja) | 2007-12-31 | 2008-12-31 | 協調多重入出力方式の信号送受信方法 |
JP2012013153A Expired - Fee Related JP5876303B2 (ja) | 2007-12-31 | 2012-01-25 | 信号伝送モード選択方法 |
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JP2010541389A Expired - Fee Related JP5032672B2 (ja) | 2007-12-31 | 2008-12-30 | セル間干渉低減方法 |
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JP2010540593A Pending JP2011509571A (ja) | 2007-12-31 | 2008-12-31 | 協調多重入出力方式の信号送受信方法 |
JP2012013153A Expired - Fee Related JP5876303B2 (ja) | 2007-12-31 | 2012-01-25 | 信号伝送モード選択方法 |
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US (6) | US8369788B2 (ja) |
EP (3) | EP2227869B1 (ja) |
JP (4) | JP5032672B2 (ja) |
KR (3) | KR100991793B1 (ja) |
CN (4) | CN101911540B (ja) |
WO (3) | WO2009084904A2 (ja) |
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WO2013168298A1 (ja) * | 2012-05-11 | 2013-11-14 | 富士通株式会社 | 移動局および無線通信方法 |
WO2015114784A1 (ja) * | 2014-01-30 | 2015-08-06 | 富士通株式会社 | 無線通信システム、基地局、端末および処理方法 |
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