JP4575428B2 - 通信装置、送信装置及び通信方法 - Google Patents
通信装置、送信装置及び通信方法 Download PDFInfo
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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
- H04L1/0026—Transmission of channel quality indication
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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
- H04B7/0413—MIMO systems
- H04B7/0417—Feedback 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
- H04B7/0613—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
- H04B7/0658—Feedback reduction
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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
- 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
- H04L1/0028—Formatting
- H04L1/0029—Reduction of the amount of signalling, e.g. retention of useful signalling or differential signalling
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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
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0057—Physical resource allocation for CQI
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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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
- 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
-
- 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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- 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
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
- Transmitters (AREA)
Description
Square Error)演算などが使用される。
3GPP TS25.876
図2は、本発明の実施の形態1に係る通信装置である端末装置100の構成を示すブロック図である。
2に出力する。変調処理及び符号化処理が施された送信信号は、送信部132において無線周波数帯に周波数変換され、送信アンテナ134を介して送信される。
信アンテナ(例えば、図3に示す第1及び第2送信アンテナ210、220)ごとに送信されたデータをP/S変換して、復号部166に出力する。
力し、受信部243は、入力される受信データをベースバンド帯の信号に周波数変換して、復調部245に出力する。
いて、比較部163は、選択部165に、伝送レート要求をアンテナ数分送信するか否かの情報を出力する。この比較部163が、選択部165に、伝送レート要求をアンテナ数分送信する情報を出力する場合は、ステップS3に移行することとなり、選択部165にアンテナ数分送信しない情報を出力する場合は、ステップS4に移行することとなる。
ンテナ210、220)独立に伝送レートを設定してデータを送信する。
、全アンテナ同一の伝送レートで通信する。よって、端末装置100は、伝送効率をほとんど低下させることなく、伝送レート要求信号を削減することができ、干渉及び消費電力の削減できるとともに、送信装置200では、スループットをほとんど低下させずに下り回線の制御情報量を削減できる。
図5は、本発明の実施の形態2に係る通信装置である端末装置300の構成を示すブロック図である。
、送信制御部260に出力するものとなっている。
する制御を行う。
図6は、本発明の実施の形態3に係る通信装置である端末装置400の構成を示すブロック図である。
に、選択部465は、しきい値を選択して比較部163に出力する。
ユーザ数が多い場合は、他のユーザへの干渉を削減する必要があるため、しきい値を大きい値とし、できるだけ1本分のアンテナの伝送レート要求信号しか送信しないようにする。
電池の残量が少ない場合は、消費電力を削減する必要があるため、しきい値は大きい値とし、できるだけ1本分のアンテナの伝送レート要求信号しか送信しないようにする。
図7は、本発明の実施の形態4に係る通信装置である端末装置500の構成を示すブロック図である。
、150を介して、通信相手である基地局からの送信信号を受信し、ステップS22に移行する。
ンテナ同一の伝送レートとして設定し、全アンテナから送信データを送信する。
図9は、本発明の実施の形態5に係る通信装置である端末装置600の構成を示すブロック図である。
制御部620に出力する。ここで、比較部563が算出する比較結果は、端末装置100にデータを送信する通信相手側がどの送信アンテナから送信するかを示す情報も含む。
、所定の値との比較結果に基づいて、前記複数の送信アンテナよりも少ない数の送信アンテナの伝送レート要求信号を送信する構成を採る。
出の際における誤り率の劣化を防ぐことができる。
容はすべてここに含めておく。
Claims (9)
- 通信相手の複数の送信アンテナから送信された複数のデータを、受信する受信部と、
受信された前記複数のデータのうち、少なくとも1つのデータに対して算出されたCQIを、前記通信相手に送信する送信部と、
前記送信部における前記CQIの送信を制御する制御部と、
を有し、
前記制御部は、前記複数のデータのそれぞれに対する前記CQIの差を所定の値と比較して、前記所定の値より大きい場合、前記複数のデータの数よりも少ない数のデータに対する前記CQIを送信するように制御する、
通信装置。 - 前記送信部は、送信される前記CQIの数に相当する数を示す情報を、前記通信相手に送信する、
請求項1記載の通信装置。 - 前記制御部は、前記複数のデータのそれぞれに対する前記CQIの差を所定の値と比較して、前記所定の値より大きい場合、前記複数のデータのうち、一つのデータに対する前記CQIを送信するように制御する、
請求項1又は2に記載の通信装置。 - 前記制御部は、前記複数のデータのそれぞれに対する前記CQIの差を所定の値と比較して、前記所定の値より大きい場合、前記複数のデータに対するそれぞれの前記CQIのうち、最も大きいCQIのみを送信する、
請求項1から3のうちいずれか1項に記載の通信装置。 - 前記受信部は、前記通信相手においてデータごとに変調された前記複数のデータを受信する、
請求項1から4のうちいずれか1項に記載の通信装置。 - 通信相手の複数の送信アンテナから送信された複数のデータを受信し、
受信された前記複数のデータのうち、少なくとも1つのデータに対して算出されたCQIを、前記通信相手に送信し、
前記複数のデータのそれぞれに対する前記CQIの差を所定の値と比較して、前記所定の値より大きい場合、前記複数のデータの数よりも少ない数データに対する前記CQIを送信するように制御する、
通信方法。 - 送信される前記CQIの数に相当する数を示す情報を、前記通信相手に送信する、
請求項6記載の通信方法。 - 通信相手に、複数の送信アンテナから複数のデータを、送信する送信部と、
前記通信相手において算出された、前記複数のデータのうち、少なくとも1つのデータに対するCQIを、受信する受信部と、
前記通信相手から、前記複数のデータのそれぞれに対する前記CQIが送信されたか、或いは、前記複数のデータの数よりも少ない数のデータに対する前記CQIが送信されたかを判断する判断部と、
を有し、
前記受信部は、前記通信相手において、前記複数のデータのそれぞれに対する前記CQIの差を所定の値と比較して、前記所定の値より大きい場合、前記複数のデータの数よりも少ない数のデータに対する前記CQIを送信するように制御されて、送信された前記CQIを受信する、
送信装置。 - 前記受信部は、前記通信相手から送信された前記CQIの数に相当する数を示す情報を、受信する、
請求項8記載の送信装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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JP2005021681 | 2005-01-28 | ||
JP2005021681 | 2005-01-28 | ||
PCT/JP2006/301156 WO2006080360A1 (ja) | 2005-01-28 | 2006-01-25 | 通信装置及び通信方法 |
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JPWO2006080360A1 JPWO2006080360A1 (ja) | 2008-06-19 |
JP4575428B2 true JP4575428B2 (ja) | 2010-11-04 |
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US (5) | US8064538B2 (ja) |
EP (2) | EP1838023B1 (ja) |
JP (1) | JP4575428B2 (ja) |
WO (1) | WO2006080360A1 (ja) |
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JP4904994B2 (ja) * | 2006-08-25 | 2012-03-28 | 富士通東芝モバイルコミュニケーションズ株式会社 | 移動無線端末装置 |
US8599777B2 (en) * | 2009-11-17 | 2013-12-03 | Qualcomm Incorporated | Channel quality indicator design for multiple-user multiple-input and multiple-output in high-speed packet access systems |
EP2549705A4 (en) * | 2010-03-16 | 2017-04-05 | Nec Corporation | Transmitter apparatus, transmission method and transmission system |
WO2012153994A2 (ko) * | 2011-05-10 | 2012-11-15 | 엘지전자 주식회사 | 복수의 안테나 포트를 이용하여 신호를 전송하는 방법 및 이를 위한 송신단 장치 |
KR102200711B1 (ko) | 2013-10-11 | 2021-01-12 | 삼성전자주식회사 | 다중 안테나 통신 시스템에서 에너지 효율을 고려하는 전력 제어 방법 및 장치 |
KR101844160B1 (ko) * | 2016-11-04 | 2018-05-14 | 고려대학교 산학협력단 | 전이중 다중 안테나 시스템에서의 안테나 선택 방법 |
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US20030128658A1 (en) * | 2002-01-08 | 2003-07-10 | Walton Jay Rod | Resource allocation for MIMO-OFDM communication systems |
WO2005020489A1 (ja) * | 2003-08-20 | 2005-03-03 | Matsushita Electric Industrial Co., Ltd. | 無線通信装置及びサブキャリア割り当て方法 |
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US8064538B2 (en) | 2011-11-22 |
EP1838023A1 (en) | 2007-09-26 |
EP3098978A1 (en) | 2016-11-30 |
US20170237522A1 (en) | 2017-08-17 |
US20120087397A1 (en) | 2012-04-12 |
US9673876B2 (en) | 2017-06-06 |
EP3098978B1 (en) | 2020-03-04 |
US20150171938A1 (en) | 2015-06-18 |
US20090010354A1 (en) | 2009-01-08 |
WO2006080360A1 (ja) | 2006-08-03 |
US9106281B2 (en) | 2015-08-11 |
US20150163040A1 (en) | 2015-06-11 |
US9001915B2 (en) | 2015-04-07 |
EP1838023B1 (en) | 2016-10-05 |
JPWO2006080360A1 (ja) | 2008-06-19 |
EP1838023A4 (en) | 2012-06-20 |
US9979508B2 (en) | 2018-05-22 |
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