KR100951332B1 - 무선통신 방법 및 시스템 - Google Patents
무선통신 방법 및 시스템 Download PDFInfo
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- KR100951332B1 KR100951332B1 KR1020097006716A KR20097006716A KR100951332B1 KR 100951332 B1 KR100951332 B1 KR 100951332B1 KR 1020097006716 A KR1020097006716 A KR 1020097006716A KR 20097006716 A KR20097006716 A KR 20097006716A KR 100951332 B1 KR100951332 B1 KR 100951332B1
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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
- H04B7/0417—Feedback systems
- H04B7/0421—Feedback systems utilizing implicit feedback, e.g. steered pilot signals
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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
- H04B7/0602—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
- H04B7/0619—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
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- H04B7/00—Radio transmission systems, i.e. using radiation field
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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
- H04B7/0636—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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- 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
- H04B7/0684—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 using different training sequences per antenna
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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
- H04B7/0686—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
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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
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0691—Hybrid systems, i.e. switching and simultaneous transmission using subgroups of transmit 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
- H04B7/0697—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
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
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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
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/0848—Joint weighting
- H04B7/0857—Joint weighting using maximum ratio combining techniques, e.g. signal-to- interference ratio [SIR], received signal strenght indication [RSS]
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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
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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
- H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using 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
- H04L1/0025—Transmission of mode-switching indication
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/38—TPC being performed in particular situations
- H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
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- Quality & Reliability (AREA)
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- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
Description
Claims (6)
- 복수의 정보신호로부터 출력 신호를 생성하고, 이 출력 신호를 복수의 안테나로부터 통신 상대측 시스템에 대해서 송신하는 무선통신 시스템에 있어서의 무선통신 방법으로서,상기 통신 상대측 시스템이 송신하는 제어 정보를 수신하는 수신 스텝과,상기 수신한 제어 정보에 근거하여, 제1의 변조 방식으로 변조되고 제1의 부호화 방식으로 부호화된 하나의 정보 신호에 관해서 상기 복수의 안테나에 대응하는 제1의 웨이트를 결정하고, 또한 제2의 변조방식으로 변조되고 제2의 부호화 방식으로 부호화된 다른 정보 신호에 관해서 상기 복수의 안테나에 대응하는 제2의 웨이트를 결정하는 웨이트 결정 스텝과,상기 제1의 웨이트를 상기 하나의 정보 신호에 승산해서 제1의 연산 결과를 생성하고, 상기 제2의 웨이트를 상기 다른 정보 신호에 승산해서 제2의 연산 결과를 생성하는 연산 스텝과,상기 제1의 연산 결과 및 제2의 연산 결과에 대해서 상기 복수의 안테나 각각에 대응하는 복수의 출력 신호를 생성하고, 상기 통신 상대측 시스템에 송신하는 송신 스텝을 구비하는 것을 특징으로 하는 무선통신 방법.
- 제1항에 있어서,상기 웨이트 결정 스텝에 있어서, 상기 제1의 변조 방식과 상기 제2의 변조 방식이 다르거나, 상기 제1의 부호화 방식과 상기 제2의 부호화 방식이 다르거나, 또는 상기 제1의 변조 방식과 상기 제2의 변조 방식이 다르면서 상기 제1의 부호화 방식과 상기 제2의 부호화 방식이 다른 것을 특징으로 하는 무선통신 방법.
- 제1항에 있어서,상기 제어 정보는, 상기 복수의 안테나에 대응하는 웨이트에 관한 정보와, 변조 방식 및 부호화 방식에 관한 전송 포맷 정보로서, 상기 웨이트에 관한 정보에 대응되는 전송 포맷 정보를 포함하는 것을 특징으로 하는 무선통신 방법.
- 복수의 정보신호로부터 출력 신호를 생성하고, 이 출력 신호를 복수의 안테나로부터 통신 상대측 시스템에 대해서 송신하는 무선통신 시스템으로서,상기 통신 상대측 시스템이 송신하는 제어 정보를 수신하는 수신 수단과,상기 수신한 제어 정보에 근거하여, 제1의 변조 방식으로 변조되고 제1의 부호화 방식으로 부호화된 하나의 정보 신호에 관해서 상기 복수의 안테나에 대응하는 제1의 웨이트를 결정하고, 또한 제2의 변조방식으로 변조되고 제2의 부호화 방식으로 부호화된 다른 정보 신호에 관해서 상기 복수의 안테나에 대응하는 제2의 웨이트를 결정하는 웨이트 결정 수단과,상기 제1의 웨이트를 상기 하나의 정보 신호에 승산해서 제1의 연산 결과를 생성하고, 상기 제2의 웨이트를 상기 다른 정보 신호에 승산해서 제2의 연산 결과를 생성하는 연산 수단과,상기 제1의 연산 결과 및 제2의 연산 결과에 대해서 다른 변조 방식 또는 부화화 방식을 적용해서, 상기 복수의 안테나 각각에 대응하는 복수의 출력 신호를 생성하고, 상기 통신 상대측 시스템에 송신하는 송신 수단을 구비하는 것을 특징으로 하는 무선통신 시스템.
- 제4항에 있어서,상기 웨이트 결정 수단에 있어서, 상기 제1의 변조 방식과 상기 제2의 변조 방식이 다르거나, 상기 제1의 부호화 방식과 상기 제2의 부호화 방식이 다르거나, 또는 상기 제1의 변조 방식과 상기 제2의 변조 방식이 다르면서 상기 제1의 부호화 방식과 상기 제2의 부호화 방식이 다른 것을 특징으로 하는 무선통신 시스템.
- 제4항에 있어서,상기 제어 정보는, 상기 복수의 안테나에 대응하는 웨이트에 관한 정보와, 변조 방식 및 부호화 방식에 관한 전송 포맷 정보로서, 상기 웨이트에 관한 정보에 대응되는 전송 포맷 정보를 포함하는 것을 특징으로 하는 무선통신 시스템.
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JP2003286184A JP2005057497A (ja) | 2003-08-04 | 2003-08-04 | 無線伝送制御方法並びに無線受信装置及び無線送信装置 |
JPJP-P-2003-286184 | 2003-08-04 |
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KR1020067002306A Division KR100926289B1 (ko) | 2003-08-04 | 2004-07-29 | 무선통신 방법 및 시스템 |
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KR100951332B1 true KR100951332B1 (ko) | 2010-04-09 |
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KR1020097006716A KR100951332B1 (ko) | 2003-08-04 | 2004-07-29 | 무선통신 방법 및 시스템 |
KR1020097006717A KR100951330B1 (ko) | 2003-08-04 | 2004-07-29 | 무선통신 방법 및 시스템 |
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US (3) | US8125963B2 (ko) |
EP (2) | EP1662686A4 (ko) |
JP (1) | JP2005057497A (ko) |
KR (3) | KR100926289B1 (ko) |
CN (3) | CN101657011B (ko) |
WO (1) | WO2005013528A1 (ko) |
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US7657244B2 (en) * | 2005-10-27 | 2010-02-02 | Samsung Electronics Co., Ltd. | Methods of antenna selection for downlink MIMO-OFDM transmission over spatial correlated channels |
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CN101090286A (zh) * | 2006-06-12 | 2007-12-19 | 清华大学 | 无线系统、基站装置及终端装置 |
US8774736B2 (en) | 2007-02-02 | 2014-07-08 | Lg Electronics Inc. | Antenna switching for data transmission in a communication system using a plurality of transmission antennas |
US8489544B2 (en) * | 2007-06-04 | 2013-07-16 | John P. Ford | System and method for prioritization and display of aggregated data |
CN101796863B (zh) * | 2007-07-06 | 2014-07-09 | 株式会社Ntt都科摩 | 移动通信系统中的基站装置和定向性控制方法 |
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KR100926289B1 (ko) | 2009-11-12 |
EP1662686A4 (en) | 2009-08-12 |
CN1830168B (zh) | 2012-02-01 |
US20090196368A1 (en) | 2009-08-06 |
KR20060054417A (ko) | 2006-05-22 |
US8385295B2 (en) | 2013-02-26 |
EP2194660B1 (en) | 2017-03-22 |
CN1830168A (zh) | 2006-09-06 |
KR20090037982A (ko) | 2009-04-16 |
EP2194660A2 (en) | 2010-06-09 |
CN101657011B (zh) | 2014-11-12 |
WO2005013528A1 (ja) | 2005-02-10 |
US8125963B2 (en) | 2012-02-28 |
CN101657011A (zh) | 2010-02-24 |
KR20090037981A (ko) | 2009-04-16 |
KR100951330B1 (ko) | 2010-04-08 |
US20080056217A1 (en) | 2008-03-06 |
EP2194660A3 (en) | 2013-05-01 |
EP1662686A1 (en) | 2006-05-31 |
CN101697496B (zh) | 2014-03-19 |
CN101697496A (zh) | 2010-04-21 |
JP2005057497A (ja) | 2005-03-03 |
US20120134437A1 (en) | 2012-05-31 |
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