JP2011508576A - セル間干渉低減方法 - Google Patents
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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
- H04B7/0413—MIMO systems
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- H—ELECTRICITY
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- 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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- 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
- H04B7/0495—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 using overlapping sectors in the same base station to implement MIMO for antennas
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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
- H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
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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
- 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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- 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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- 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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- 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
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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の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干渉値を算定して、前記干渉値を前記サービング基地局に伝送するステップと、
を含み、
前記干渉値は、各基地局におけるプリコーディング行列インデックスの選択の優先順位を定めるのに用いられ、
前記優先順位の情報は、前記サービング基地局から前記一つ以上の隣接基地局に伝達されることを特徴とするセル間干渉低減方法。 - 前記干渉値は、信号対干渉雑音比(SINR)、正規化した干渉電力及びIoT(Interference over Thermal)のうち一つ以上を含む、請求項1に記載のセル間干渉低減方法。
- 前記プリコーディング行列インデックスの選択の優先順位は、2つ以上の端末からの特定プリコーディングインデックスの制限要請または特定プリコーディングインデックスの推奨が衝突する場合に、各基地局で使用するプリコーディング行列インデックスを選択するのに用いられる、請求項1に記載のセル間干渉低減方法。
- 前記測定された干渉値を、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、請求項1に記載のセル間干渉低減方法。
- 前記チャンネル信号を測定するステップの後に、
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、
前記算定された第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、
をさらに含む、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、各基地局におけるプリコーディング行列の選択の優先順位の決定に用いられる干渉値を受信するステップと、
前記干渉値に基づく優先順位の情報を一つ以上の隣接基地局に伝達するステップと、
を含み、
前記干渉値は、前記特定基地局が前記端末に伝送する信号に一つ以上の隣接基地局のチャンネル信号が与える干渉の量として前記端末で測定されることを特徴とするセル間干渉低減方法。 - 前記干渉値は、信号対干渉雑音比(SINR)、正規化した干渉電力及びIoTのうち一つ以上を含む、請求項6に記載のセル間干渉低減方法。
- 前記プリコーディング行列インデックスの選択の優先順位は、2つ以上の端末からの特定プリコーディングインデックスの制限要請または特定プリコーディングインデックスの推奨が衝突する場合に、各基地局で使用するプリコーディング行列インデックスを選択するのに用いられる、請求項6に記載のセル間干渉低減方法。
- 前記測定された干渉値は、対応する基地局識別子情報と共に前記特定基地局に受信される、請求項6に記載のセル間干渉低減方法。
- 前記干渉値を受信するステップにおいて、
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、対応する基地局識別子情報と共にさらに受信する、請求項6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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KR10-2007-0141690 | 2007-12-31 | ||
KR20070141690 | 2007-12-31 | ||
KR10-2008-0120610 | 2008-12-01 | ||
KR1020080120610A KR100991794B1 (ko) | 2007-12-31 | 2008-12-01 | 셀간 간섭 감소 방법 |
PCT/KR2008/007798 WO2009084904A2 (en) | 2007-12-31 | 2008-12-30 | Method for reducing inter-cell interference |
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JP2011508576A true JP2011508576A (ja) | 2011-03-10 |
JP5032672B2 JP5032672B2 (ja) | 2012-09-26 |
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JP2010540591A Expired - Fee Related JP5134094B2 (ja) | 2007-12-31 | 2008-12-30 | セル間干渉低減方法 |
JP2010541389A Expired - Fee Related JP5032672B2 (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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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) | EP2227868A4 (ja) |
JP (4) | JP5134094B2 (ja) |
KR (3) | KR100991794B1 (ja) |
CN (4) | CN101911539B (ja) |
WO (3) | WO2009084905A2 (ja) |
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JP2013524635A (ja) * | 2010-03-30 | 2013-06-17 | クゥアルコム・インコーポレイテッド | ワイヤレス通信システムにおいて協調スケジューリングを容易にするためのシステム、装置、方法 |
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