JP2010517407A - 通信システムにおける信号の送受信方法及び装置 - Google Patents
通信システムにおける信号の送受信方法及び装置 Download PDFInfo
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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
- H04B7/0602—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 antenna switching
- H04B7/0608—Antenna selection according to transmission parameters
- H04B7/061—Antenna selection according to transmission parameters using feedback from receiving side
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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
- 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
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- 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
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- 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
- H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- 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
- H04L1/0025—Transmission of mode-switching indication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- 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
- H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
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Abstract
【選択図】図5
Description
105:受信機
201:変調部
203:スイッチング制御部
301:送受信部
305:スイッチング決定部
307:変調モード決定部
Claims (20)
- 多数のアンテナを含む送信機における信号の送受信方法であって、
前記多数のアンテナのうちのいずれか一つのアンテナを通じて、受信機に信号を送信する段階と、
前記受信機から、前記送信アンテナの切り替えを指示するアンテナスイッチング指示子を受信する段階と、
前記アンテナスイッチング指示子により、前記送信アンテナを切り替えた後、切り替えられたアンテナを通じて、信号を前記受信機に伝送する段階と
を含む信号の送受信方法。 - 前記多数のアンテナは、互いに異なる指向性を有することを特徴とする、請求項1に記載の信号の送受信方法。
- 前記受信機は、受信された信号のSNRを測定した後、前記SNRが基準値より小さい場合、前記アンテナスイッチング指示子を前記送信機にフィードバックすることを特徴とする、請求項1に記載の信号の送受信方法。
- 前記受信機から変調モードインデックスを受信する段階を更に含み、前記送信機は、前記変調モードインデックスに相応する変調モードで信号を送信することを特徴とする、請求項1に記載の信号の送受信方法。
- 前記受信機により受信された信号のSNRが、変調モードの決定のための境界値、γTn(ここで、n=N、N−1、…、2)と比較して、前記SNRがγTn+1より小さく、γTnより大きい場合、前記変調モードインデックスは、nに決定されることを特徴とする、請求項4に記載の信号の送受信方法。
- 多重送信アンテナを通じて信号を送信することを示す多重送信アンテナモード情報を、前記受信機に伝送する段階を更に含むことを特徴とする、請求項1に記載の信号の送受信方法。
- 前記多重送信アンテナモード情報は、前記多数のアンテナ数の情報及び前記基準値のうちの少なくともいずれか一つを含むことを特徴とする、請求項6に記載の信号の送受信方法。
- 前記受信機が、前記送信機のアンテナの数ほど、アンテナスイッチング指示子を連続に前記送信機にフィードバックする場合、前記受信機は、前記送信機の多数のアンテナのうち、SNRが最も高いアンテナの情報を、前記送信機にフィードバックし、前記送信機は、SNRが最も高いアンテナを通じて信号を伝送することを特徴とする、請求項7に記載の信号の送受信方法。
- 無線チャネルを通じて、多数の送信アンテナを含む送信機と結合する受信機における信号の送受信方法であって、
前記送信機から、前記多数の送信アンテナのうちのいずれか一つを通じて信号を受信する段階と、
前記受信信号のSNRを測定する段階と、
前記測定されたSNRと基準値とを比較する段階と、
前記比較の結果、前記測定されたSNRが前記基準値より小さい場合、送信アンテナを切り替えることを示すアンテナスイッチング指示子を、前記送信機に伝送する段階と
を含む信号の送受信方法。 - 前記測定されたSNRに相応して、変調モードを決定する段階と、
前記決定された変調モードに応じた変調モードインデックスを前記送信機に伝送する段階と
を更に含み、
前記測定されたSNRが、変調モードの決定のための境界値、γTn(ここで、n=N、N−1、…、2)と比較して、前記SNRがγTn+1より小さく、γTnより大きい場合、変調モードは、nに決定されることを特徴とする、請求項9に記載の信号の送受信方法。 - 多重送信アンテナを通じて信号を送信することを示す多重送信アンテナモード情報を、前記送信機から受信する段階を更に含むことを特徴とする、請求項9に記載の信号の送受信方法。
- 前記多重送信アンテナモード情報は、前記多数の送信アンテナの数の情報及び前記基準値のうちの少なくともいずれか一つを含むことを特徴とする、請求項11に記載の信号の送受信方法。
- 前記受信機が、前記多数のアンテナの数ほど、アンテナスイッチング指示子を連続に前記送信機に伝送し、前記送信機のすべてのアンテナに対するSNRが前記基準値より小さい場合、前記受信機は、前記送信機のアンテナのうち、SNRが最も高いアンテナの情報を、前記送信機にフィードバックすることを特徴とする、請求項12に記載の信号の送受信方法。
- 前記多数のアンテナの数ほど、アンテナスイッチング指示子を連続に前記送信機に伝送し、前記多数の送信アンテナに対する全てのSNRが、境界値γT2より小さい場合、前記受信機は、QPSKの変調方式で信号を送信することを、送信機に要請することを特徴とする、請求項12に記載の信号の送受信方法。
- 前記多数のアンテナの数ほど、アンテナスイッチング指示子を連続に前記送信機に伝送し、前記多数の送信アンテナに対する全てのSNRが、境界値γT2より小さい場合、前記受信機は、次のガード区間(guard period)の間、データをバッファーに格納し、待機要請を送信機に伝送することを特徴とする、請求項12に記載の信号の送受信方法。
- 多数の送信アンテナを含み、受信機からフィードバックを受けた変調モードに応じて信号を変調して伝送し、前記受信機から受信されたアンテナスイッチング指示子に応じて送信アンテナを切り替える送信機と、
前記送信機から伝送される信号のSNRが基準値より小さい場合、前記送信機に前記アンテナスイッチング指示子をフィードバックする受信機と
を備える信号の送受信装置。 - 前記受信機は、前記送信機から伝送される信号のSNRに対応する変調モードを決定し、前記送信機にフィードバックすることを特徴とする、請求項16に記載の信号の送受信装置。
- 前記送信機は、
前記受信機からフィードバックを受けた変調モードに応じて、送信信号を変調する変調部と、
前記受信機からフィードバックを受けたアンテナスイッチング指示子に応じて、送信アンテナの切り替えを制御するスイッチング制御部と
を備えることを特徴とする、請求項16に記載の信号の送受信装置。 - 前記受信機は、
前記受信信号に対して、前記アンテナ毎のSNRを測定するSNR測定部と、
前記測定されたSNRを前記基準値と比較して、送信機の送信アンテナを切り替えることを決定するスイッチング決定部と、
前記測定されたSNRを利用して、前記変調モードを決定する変調モード決定部と
を備えることを特徴とする、請求項16に記載の信号の送受信装置。 - 前記受信機が、前記送信機のアンテナの数ほど、アンテナスイッチング指示子をフィードバックし、前記送信機のすべてのアンテナに対するSNRが前記基準値より小さい場合、前記送信機のアンテナのうち、SNRが最も高いアンテナの情報を、前記送信機にフィードバックすることを特徴とする、請求項16に記載の信号の送受信装置。
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PCT/KR2008/000328 WO2008093948A1 (en) | 2007-01-30 | 2008-01-18 | Method and apparatus for transmitting and receiving a signal in a communication system |
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JP2012043452A Expired - Fee Related JP5305425B2 (ja) | 2007-01-30 | 2012-02-29 | 通信システムにおける信号の送受信方法及び装置 |
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CN107884792A (zh) * | 2016-09-29 | 2018-04-06 | 上海华测导航技术股份有限公司 | 一种gnss接收机天线信号切换装置及切换方法 |
JP7013664B2 (ja) | 2017-03-24 | 2022-02-01 | 富士フイルムビジネスイノベーション株式会社 | データ送信システムおよびプログラム |
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KR101989611B1 (ko) * | 2017-09-20 | 2019-06-17 | 성균관대학교산학협력단 | 듀얼 모드를 이용한 무선 전력전송장치, 무선 전력수신장치, 무선 전력송신방법, 무선 전력수신방법 및 무선 전력전송시스템과 그 기록 매체 |
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Patent Citations (4)
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JPH09219675A (ja) * | 1996-02-14 | 1997-08-19 | Toshiba Corp | 無線通信システムにおける伝搬パス選択方法 |
JP2002026796A (ja) * | 1998-04-07 | 2002-01-25 | Matsushita Electric Ind Co Ltd | 無線通信装置及び無線通信システム |
JP2001333051A (ja) * | 2000-05-22 | 2001-11-30 | Matsushita Electric Ind Co Ltd | 無線通信装置及び無線通信方法 |
WO2006106613A1 (ja) * | 2005-03-31 | 2006-10-12 | Ntt Docomo, Inc. | 無線通信装置及び無線通信方法 |
Also Published As
Publication number | Publication date |
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JP5305408B2 (ja) | 2013-10-02 |
KR100957854B1 (ko) | 2010-05-14 |
EP2104982A4 (en) | 2016-02-24 |
US20100075617A1 (en) | 2010-03-25 |
KR20080071488A (ko) | 2008-08-04 |
US8712341B2 (en) | 2014-04-29 |
WO2008093948A1 (en) | 2008-08-07 |
JP2012147456A (ja) | 2012-08-02 |
JP5305425B2 (ja) | 2013-10-02 |
EP2104982A1 (en) | 2009-09-30 |
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