JP5335778B2 - マルチユーザ・マルチ入力・マルチ出力(mu−mimo)ワイヤレス通信システムを動作させる方法及びシステム - Google Patents
マルチユーザ・マルチ入力・マルチ出力(mu−mimo)ワイヤレス通信システムを動作させる方法及びシステム Download PDFInfo
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- JP5335778B2 JP5335778B2 JP2010511776A JP2010511776A JP5335778B2 JP 5335778 B2 JP5335778 B2 JP 5335778B2 JP 2010511776 A JP2010511776 A JP 2010511776A JP 2010511776 A JP2010511776 A JP 2010511776A JP 5335778 B2 JP5335778 B2 JP 5335778B2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements
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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
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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
-
- 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
- H04L1/0618—Space-time coding
- H04L1/0625—Transmitter arrangements
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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
- H04L5/0058—Allocation criteria
- H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
Description
z’=[(a’+b’i)(c’+d’i)]Tへ、それは標準ガウス分布(0,1)に従うものである。
102:ベースステーション(eNB)
104:モバイルステーション(UE)
106,108:アンテナ
Claims (6)
- ベースステーションと複数のモバイルステーションとの間のマルチユーザ・マルチ入力・マルチ出力(MU−MIMO)をサポートするワイヤレス通信システムにおいて使用するモバイルステーションにおいて、
複数の入ってくる信号を受信し且つ測定する形態とされている信号受信・測定モジュール、
セル間干渉情報を決定する形態とされている干渉決定モジュール、
チャンネル品質インジケータ(CQI)を計算する場合に使用するためにセル間干渉情報をベースステーションへ送信する形態とされている送信機、
を有しており、該干渉決定モジュールが、受信信号に対する平均値及び標準偏差を計算する形態とされている干渉計算機と、受信信号に応答してコードブックからのインデックスを選択する形態とされているインデックスセレクタと、を有しており、該平均値及び標準偏差が、該インデックスがベースステーションへ送信される間隔よりも一層長い間隔でベースステーションへ送信されるモバイルステーション。 - 請求項1において、更に、コードブックを格納する形態とされているコードブックモジュールを有しているモバイルステーション。
- ワイヤレス通信システムにおいて使用可能なベースステーション用の方法において、
ベースステーションにおいて、
モバイルステーションから受信したセル間干渉情報を使用して該モバイルステーションに対するチャンネル品質インジケータ(CQI)を計算し、
該CQIに応答してスケジューリング決定を行い、且つ
該スケジューリング決定に従って該モバイルステーションへデータを送信する、
ことを包含しており、該セル間干渉情報は該モバイルステーションにおいて決定され、その場合に、受信信号に対して平均値及び標準偏差が計算され且つ受信信号に応答してコードブックからインデックスが選択され、該ベースステーションにおいて、該インデックスが該ベースステーションへ供給される間隔よりも一層長い間隔で該モバイルステーションから該平均値および標準偏差を受け取る方法。 - 請求項3において、該CQIが、該モバイルステーションから受信した該セル間干渉情報に加えて、空間的サブステーションに対する利用スキーム情報及び等価チャンネルマトリクス情報を使用して、該ベースステーションにおいて計算される方法。
- 請求項3において、更に、該ベースステーションにおいて、種々の利用スキームに対し該モバイルステーションに関連するCQIを計算し、且つ該計算したCQIに応答してスケジューリング決定を行う、ことを包含している方法。
- ワイヤレス通信システムにおいて使用可能なモバイルステーション用の方法において、
モバイルステーションにおいて、
複数個の入ってくる信号を受信し且つ測定し、
セル間干渉情報を発生し、且つ
チャンネル品質インジケータ(CQI)を計算する場合に使用するために、該セル間干渉情報を該ベースステーションへ送信する、
ことを包含しており、該セル間干渉情報を発生する場合に、受信信号に対して平均値及び標準偏差を計算し、且つ受信信号に応答してコードブックからインデックスを選択し、該インデックスが該ベースステーションへ送信される間隔よりも一層長い間隔で該平均値及び標準偏差が該ベースステーションへ送信される方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200710128275.3 | 2007-06-14 | ||
CN2007101282753A CN101325741B (zh) | 2007-06-14 | 2007-06-14 | 用于操作多用户多输入多输出(mu-mimo)无线通信系统的方法和系统 |
PCT/IB2008/052353 WO2008152612A2 (en) | 2007-06-14 | 2008-06-13 | Method and system for operating a multi-user multiple-input multiple-output (mu-mimo) wireless communications system |
Publications (3)
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JP2011514690A JP2011514690A (ja) | 2011-05-06 |
JP2011514690A5 JP2011514690A5 (ja) | 2011-08-04 |
JP5335778B2 true JP5335778B2 (ja) | 2013-11-06 |
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JP2010511776A Active JP5335778B2 (ja) | 2007-06-14 | 2008-06-13 | マルチユーザ・マルチ入力・マルチ出力(mu−mimo)ワイヤレス通信システムを動作させる方法及びシステム |
Country Status (5)
Country | Link |
---|---|
US (2) | US7944906B2 (ja) |
EP (1) | EP2174428B1 (ja) |
JP (1) | JP5335778B2 (ja) |
CN (1) | CN101325741B (ja) |
WO (1) | WO2008152612A2 (ja) |
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Publication number | Publication date |
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US8958394B2 (en) | 2015-02-17 |
WO2008152612A2 (en) | 2008-12-18 |
CN101325741B (zh) | 2012-12-12 |
EP2174428A2 (en) | 2010-04-14 |
JP2011514690A (ja) | 2011-05-06 |
US20110211485A1 (en) | 2011-09-01 |
EP2174428B1 (en) | 2016-04-27 |
US20100195514A1 (en) | 2010-08-05 |
WO2008152612A3 (en) | 2009-03-12 |
WO2008152612A8 (en) | 2010-03-18 |
CN101325741A (zh) | 2008-12-17 |
US7944906B2 (en) | 2011-05-17 |
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