JP2020521360A - 無線通信システムにおいてフィードバック情報を送信する方法及びそのための端末 - Google Patents
無線通信システムにおいてフィードバック情報を送信する方法及びそのための端末 Download PDFInfo
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- JP2020521360A JP2020521360A JP2019561217A JP2019561217A JP2020521360A JP 2020521360 A JP2020521360 A JP 2020521360A JP 2019561217 A JP2019561217 A JP 2019561217A JP 2019561217 A JP2019561217 A JP 2019561217A JP 2020521360 A JP2020521360 A JP 2020521360A
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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
- H04B7/0658—Feedback reduction
- H04B7/0663—Feedback reduction using vector or matrix manipulations
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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
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
- H04B7/046—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account
-
- 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
- H04B7/0634—Antenna weights or vector/matrix coefficients
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
- H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
- H04N19/176—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims (15)
- 端末がフィードバック情報を送信する方法であって、
前記端末が測定したチャネルに関連する行列に対して、左辺及び右辺の各々に変換行列を乗じて第1行列を算出する段階;
前記第1行列の要素から大きいサイズの所定数の要素を除いた残りの要素を0に変換する第1変換又は臨界値を超える要素を除いた残りの要素を0に変換する第2変換を行って第2行列を算出する段階;
前記第2行列を量子化して第3行列を算出する段階;
前記第3行列において所定のパターンに従って特定の部分を選択してベクトルを構成する段階;
前記構成されたベクトルに圧縮センシングのためのセンシング行列を乗じて算出された出力をビットで構成する段階;及び
前記出力されたビットを基地局に送信する段階を含んでなる、フィードバック情報を送信する方法。 - 前記所定のパターンに従う特定の部分の選択は、前記第3行列の全ての構成要素を選択することである、請求項1に記載のフィードバック情報を送信する方法。
- 前記所定のパターンに従う特定の部分の選択は、前記端末のチャネルに関連する行列がエルミート(Hermitian)行列である場合は、前記第3行列において上三角(upper triangular)要素のみを選択することである、請求項1に記載のフィードバック情報を送信する方法。
- 前記第2行列を算出する段階は、前記第1変換及び前記第2変換を行う前に前記第1行列に単位行列(identity matrix)を乗ずる段階を含んでなる、請求項1に記載のフィードバック情報を送信する方法。
- 前記変換行列はDFT(Discrete Fourier Transform)行列を含んでなる、請求項1に記載のフィードバック情報を送信する方法。
- 前記端末のチャネルに関連する行列はチャネル行列又はチャネル共分散行列を含んでなる、請求項1に記載のフィードバック情報を送信する方法。
- 前記センシング行列は全ての行列要素が1つ又は−1で構成された行列に該当する、請求項1に記載のフィードバック情報を送信する方法。
- 前記センシング行列、前記量子化のための関数、前記第1又は第2変換の規則又は前記変換行列に関する情報を上位階層シグナリングにより前記基地局から受信する、請求項1に記載のフィードバック情報を送信する方法。
- フィードバック情報を送信する端末であって、
前記端末が測定したチャネルに関連する行列に対して、左辺及び右辺の各々に変換行列を乗じて第1行列を算出し、
前記第1行列の要素から大きいサイズの所定数の要素を除いた残りの要素を0に変換する第1変換又は臨界値を超える要素を除いた残りの要素を0に変換する第2変換を行って第2行列を算出し、
前記第2行列を量子化して第3行列を算出し、
前記第3行列において所定のパターンに従って特定の部分を選択してベクトルを構成し、
前記構成されたベクトルに圧縮センシングのためのセンシング行列を乗じて算出された出力をビットで構成するプロセッサ;及び
前記出力されたビットを基地局に送信する送信器を含んでなる、端末。 - 前記プロセッサは前記所定のパターンに従う特定の部分の選択として前記第3行列の全ての構成要素を選択する、請求項9に記載の端末。
- 前記プロセッサは前記端末のチャネルに関連する行列がエルミート(Hermitian)行列である場合は、前記所定のパターンに従う特定の部分の選択として前記第3行列において上三角(Upper triangular)要素のみを選択する、請求項9に記載の端末。
- 前記プロセッサは前記第2行列の算出のために前記第1変換及び前記第2変換を行う前に前記第1行列に単位行列(identity matrix)を乗ずる、請求項9に記載の端末。
- 前記端末のチャネルに関連する行列はチャネル行列又はチャネル共分散行列を含んでなる、請求項9に記載の端末。
- 前記センシング行列は全ての行列要素が1又は−1で構成された行列に該当する、請求項9に記載の端末。
- さらに前記センシング行列、前記量子化のための関数、前記第1又は第2変換の規則又は前記変換行列に関する情報を上位階層シグナリングにより前記基地局から受信する受信器を含んでなる、請求項9に記載の端末。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US201762509170P | 2017-05-21 | 2017-05-21 | |
US62/509,170 | 2017-05-21 | ||
PCT/KR2018/005796 WO2018216989A1 (ko) | 2017-05-21 | 2018-05-21 | 무선통신 시스템에서 피드백 정보를 전송하는 방법 및 이를 위한 장치 |
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JP2020521360A true JP2020521360A (ja) | 2020-07-16 |
JP7308152B2 JP7308152B2 (ja) | 2023-07-13 |
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US (1) | US10848210B2 (ja) |
EP (1) | EP3633873B1 (ja) |
JP (1) | JP7308152B2 (ja) |
CN (1) | CN110622438B (ja) |
WO (1) | WO2018216989A1 (ja) |
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US10051488B1 (en) * | 2017-10-19 | 2018-08-14 | At&T Intellectual Property I, L.P. | Dual mode communications device with remote device feedback and methods for use therewith |
WO2021007708A1 (en) * | 2019-07-12 | 2021-01-21 | Huawei Technologies Co., Ltd. | Systems and methods for beamforming |
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- 2018-05-21 JP JP2019561217A patent/JP7308152B2/ja active Active
- 2018-05-21 US US16/615,595 patent/US10848210B2/en active Active
- 2018-05-21 WO PCT/KR2018/005796 patent/WO2018216989A1/ko active Application Filing
- 2018-05-21 EP EP18805226.0A patent/EP3633873B1/en active Active
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US20130163645A1 (en) * | 2011-12-27 | 2013-06-27 | Industrial Technology Research Institute | Channel information feedback method and wireless communication device using the same |
US20150256244A1 (en) * | 2014-03-07 | 2015-09-10 | Samsung Electronics Co., Ltd. | Apparatus and method for channel feedback in multiple input multiple output system |
CN104539335A (zh) * | 2014-12-24 | 2015-04-22 | 无锡北邮感知技术产业研究院有限公司 | 一种大规模天线系统的有限反馈方法及装置 |
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US10848210B2 (en) | 2020-11-24 |
US20200106490A1 (en) | 2020-04-02 |
EP3633873B1 (en) | 2021-11-24 |
EP3633873A4 (en) | 2021-01-27 |
JP7308152B2 (ja) | 2023-07-13 |
CN110622438A (zh) | 2019-12-27 |
EP3633873A1 (en) | 2020-04-08 |
CN110622438B (zh) | 2023-02-17 |
WO2018216989A1 (ko) | 2018-11-29 |
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