JP6212043B2 - ビームフォーミング基盤の無線通信システムにおけるビームを選択するための装置及び方法 - Google Patents
ビームフォーミング基盤の無線通信システムにおけるビームを選択するための装置及び方法 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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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
- H04B7/0408—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam diversity
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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
- H04B7/0413—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
- H04B7/06—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
- H04B7/063—Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
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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
-
- 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
- H04B7/08—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
- H04B7/086—Weighted combining using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming
-
- 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
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0868—Hybrid systems, i.e. switching and combining
- H04B7/088—Hybrid systems, i.e. switching and combining using beam selection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/002—Transmission of channel access control information
- H04W74/008—Transmission of channel access control information with additional processing of random access related information at receiving side
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
Description
前のシステム構造として定義されることもある。
ここで、図4の(b)に示したビットマップは、方向探知信号を受信した時間区間を『1』と表す。
もし、図5に示したように移動局510の送信ビームパターン#1と#10が候補送信ビームパターンである場合、受信ビーム制御部1015は、受信ビームパターンを変更しながら移動局510が送信ビームパターン#1を通じて伝送するランダムアクセス信号を受信する(520)。以後、受信ビーム制御部1015は、受信ビームパターンを変更しながら移動局510が送信ビームパターン#10を通じて伝送するランダムアクセス信号を受信する(
530)。
この時、基地局は、送信部を通じてセル情報と方向探知情報、及び上向きリンクビームアライメント情報を伝送する。
110 移動局
200 基地局
210 移動局
Claims (15)
- 無線通信システムにおける基地局の動作方法であって、
方向探知チャネルの時間区間それぞれで移動局が互いに異なる送信ビームパターンそれぞれを用いて送信した方向探知信号が受信されるか否かを確認する過程と、
前記時間区間のうち前記方向探知信号が受信された少なくとも一つの時間区間を指示する情報を前記移動局に送信する過程と、
ランダムアクセスチャネルを通じて複数個の受信ビームパターンを用いて前記移動局が少なくとも一つの送信ビームパターンを用いて送信するランダムアクセス信号を受信する過程と、
ここで、前記少なくとも一つの送信ビームパターンは前記互いに異なる送信ビームパターンのうち前記少なくとも一つの時間区間で使用された送信ビームパターンであって、前記情報に基づいて決定され、
前記情報に基づいて前記少なくとも一つの時間区間で使用された少なくとも一つの送信ビームパターンを識別する過程と、
前記ランダムアクセス信号に基づいて前記複数個の受信ビームパターンのうち前記少なくとも一つの送信ビームパターンに対応する少なくとも一つの受信ビームパターンを決定する過程と、を含む方法。 - 前記方向探知信号の受信可否を確認する過程以前に前記方向探知チャネルのリソース割り当て情報及び前記ランダムアクセスチャネルのリソース割り当て情報を送信する過程をさらに含む請求項1に記載の方法。
- 前記方向探知信号が受信されるか否かは、前記時間区間それぞれに対して前記方向探知信号の受信電力又は相関値に基づいて決定される請求項1に記載の方法。
- 前記移動局から方向探知信号が受信されるか否かを確認する過程は、
受信ビームフォーミングを適用せず、前記方向探知チャネルの前記時間区間それぞれを通じて前記方向探知信号が受信されるか否かを確認する過程を含む請求項1に記載の方法。 - 前記移動局から方向探知信号が受信されるか否かを確認する過程は、
ビーム幅の広い受信ビームパターンを用いて前記方向探知チャネルの前記時間区間それぞれを通じて前記方向探知信号が受信されるか否かを確認する過程を含む請求項1に記載の方法。 - 前記少なくとも一つの時間区間を指示する前記情報は、
前記時間区間それぞれに対応するビットで構成されるビットマップを含み、
前記ビットマップで前記ビットのうち前記少なくとも一つの時間区間に対応する少なくとも一つのビットが活性化された請求項1に記載の方法。 - 前記少なくとも一つの送信ビームパターンに対応する前記少なくとも一つの受信ビームパターンに関する情報を前記移動局に送信する過程をさらに含む請求項1に記載の方法。
- 無線通信システムにおける移動局の動作方法であって、
方向探知チャネルの時間区間それぞれを通じて互いに異なる送信ビームパターンそれぞれを用いて方向探知信号を基地局に送信する過程と、
前記時間区間のうち前記基地局によって前記方向探知信号が受信された少なくとも一つの時間区間を指示する情報を前記基地局から受信する過程と、
ランダムアクセスチャネルを通じて少なくとも一つの送信ビームパターンを用いてランダムアクセス信号を送信する過程と、
ここで、前記少なくとも一つの送信ビームパターンは前記互いに異なる送信ビームパターンのうち前記少なくとも一つの時間区間で使用された送信ビームパターンであって、前記情報に基づいて決定される方法。 - 前記方向探知信号を基地局に送信する過程以前に前記基地局から前記方向探知チャネルのリソース割り当て情報及び前記ランダムアクセスチャネルのリソース割り当て情報を受信する過程をさらに含む請求項8に記載の方法。
- 前記方向探知信号を送信する過程は、
前記時間区間を通じて送信ビームパターンを変更しながら信号を送信できる最小限のトーン(tone)、副搬送波(sub-carrier)、及び周波数帯域のいずれかに送信電力を集中させて前記方向探知信号を送信する過程を含む請求項8に記載の方法。 - 前記方向探知信号を送信する過程は、
前記時間区間を通じて送信ビームパターンを変更しながら反復信号/コード送信(repetition code)方式又は低符号化率(low code rate)を持つ符号を使用して前記方向探知信号を送信する過程を含む請求項8に記載の方法。 - 前記少なくとも一つの時間区間を指示する前記情報は、
前記時間区間それぞれに対応するビットで構成されるビットマップを含み、
前記ビットマップで前記ビットのうち前記少なくとも一つの時間区間に対応する少なくとも一つのビットが活性化された請求項8に記載の方法。 - 前記ランダムアクセス信号を送信する過程は、
前記基地局の支援可能な受信ビームパターンの個数を考慮して前記少なくとも一つの送信ビームパターンを用いて前記ランダムアクセス信号を繰り返して送信する過程を含む請求項8に記載の方法。 - 請求項1から請求項7のいずれかの方法を行うための基地局の装置。
- 請求項8から請求項13のいずれかの方法を行うための移動局の装置。
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KR10-2011-0092906 | 2011-09-15 | ||
KR20110092906 | 2011-09-15 | ||
KR10-2012-0102020 | 2012-09-14 | ||
KR1020120102020A KR101966724B1 (ko) | 2011-09-15 | 2012-09-14 | 빔 포밍 기반의 무선통신시스템에서 빔을 선택하기 위한 장치 및 방법 |
PCT/KR2012/007387 WO2013039355A2 (en) | 2011-09-15 | 2012-09-14 | Apparatus and method for beam selecting in beamformed wireless communication system |
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JP2014530535A JP2014530535A (ja) | 2014-11-17 |
JP2014530535A5 JP2014530535A5 (ja) | 2017-07-27 |
JP6212043B2 true JP6212043B2 (ja) | 2017-10-11 |
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US (1) | US8983547B2 (ja) |
EP (1) | EP2756609B1 (ja) |
JP (1) | JP6212043B2 (ja) |
KR (1) | KR101966724B1 (ja) |
CN (1) | CN103931112B (ja) |
WO (1) | WO2013039355A2 (ja) |
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EP2756609A4 (en) | 2015-04-29 |
CN103931112A (zh) | 2014-07-16 |
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JP2014530535A (ja) | 2014-11-17 |
US20130072244A1 (en) | 2013-03-21 |
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