JP6632768B2 - 下位無線基地局、上位無線基地局および無線基地局システム - Google Patents
下位無線基地局、上位無線基地局および無線基地局システム Download PDFInfo
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- JP6632768B2 JP6632768B2 JP2019526430A JP2019526430A JP6632768B2 JP 6632768 B2 JP6632768 B2 JP 6632768B2 JP 2019526430 A JP2019526430 A JP 2019526430A JP 2019526430 A JP2019526430 A JP 2019526430A JP 6632768 B2 JP6632768 B2 JP 6632768B2
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- 230000005540 biological transmission Effects 0.000 claims description 73
- 238000012545 processing Methods 0.000 claims description 47
- 239000011159 matrix material Substances 0.000 claims description 28
- 238000000034 method Methods 0.000 description 21
- 238000010295 mobile communication Methods 0.000 description 17
- 238000010586 diagram Methods 0.000 description 13
- 238000004891 communication Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000012937 correction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 108010076504 Protein Sorting Signals Proteins 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
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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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0014—Three-dimensional division
- H04L5/0023—Time-frequency-space
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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
-
- 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
- H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
-
- 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
-
- 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
- H04B7/0452—Multi-user MIMO systems
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/32—Hierarchical cell structures
-
- 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
- H04W88/085—Access point devices with remote components
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/04—Interfaces between hierarchically different network devices
- H04W92/12—Interfaces between hierarchically different network devices between access points and access point controllers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/16—Interfaces between hierarchically similar devices
- H04W92/20—Interfaces between hierarchically similar devices between access points
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Radio Transmission System (AREA)
Description
図1は、実施の形態1にかかる無線基地局システムの構成例を示す図である。無線基地局システム100は、上位基地局10と、下位基地局20−1〜20−M(Mは1以上の整数)と、を備える。上位基地局10は、後述する上位スケジューリングを行う。下位基地局20−1〜20−Mを区別せずに示すときは、適宜、下位基地局20と称する。下位基地局20は、後述する下位スケジューリングを行う。
図5は、実施の形態2にかかる無線基地局システムの構成例を示す図である。無線基地局システム100と無線基地局システム100aとの違いは、無線基地局システム100の下位基地局20を構成する無線RF信号処理部23とアンテナ24とが、複数のRRH(Remote Radio Head)30として独立し、下位基地局20aの外部にある構成となっている点である。共通部分は省略し異なる部分を中心に説明する。RRH30は、無線信号の送受信をする無線装置である。
Claims (7)
- 1つ以上の移動端末との間の伝送路状態を示す伝送路情報を取得する取得部と、
前記伝送路情報を上位無線基地局へ送信し、前記上位無線基地局により通知される前記1つ以上の移動端末のなかから選択された移動端末である送信先端末と前記送信先端末のデータ伝送速度とに基づいて、前記送信先端末の信号ストリーム数および変調符号化方式を決定するスケジューラ部と、
前記移動端末に対してMulti User−Multiple Input Multiple Outputプリコーディングを行う信号処理部と、
を備えることを特徴とする、下位無線基地局。 - 前記伝送路情報は、前記移動端末との間の伝送路の状態を実数スカラ量で表した値であることを特徴とする、請求項1に記載の下位無線基地局。
- 前記伝送路情報は、前記移動端末の送信電力、前記移動端末のアンテナ数、前記移動端末における熱雑音電力、および前記移動端末との間の伝送路の状態を示す伝送路行列に基づいて算出されることを特徴とする、請求項2に記載の下位無線基地局。
- 移動端末に送信される伝送データの待機バッファ量と、下位無線基地局から通知される、前記移動端末との間の伝送路状態を示す伝送路情報とに基づき、前記下位無線基地局のデータの送信対象となる送信先端末と前記送信先端末のデータ伝送速度とを決定し、前記送信先端末と前記データ伝送速度とを前記下位無線基地局へ通知するスケジューラ部、を備えることを特徴とする、上位無線基地局。
- 請求項1から4のいずれか1つに記載の下位無線基地局と、
請求項5に記載の上位無線基地局と、
を備えることを特徴とする、無線基地局システム。 - 請求項1から4のいずれか1つに記載の下位無線基地局と、
請求項5に記載の上位無線基地局と、
前記下位無線基地局から受信したベースバンド信号を無線信号に変換し、前記無線信号を移動端末へ送信する無線装置と、
を備えることを特徴とする、無線基地局システム。
Applications Claiming Priority (1)
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PCT/JP2017/023567 WO2019003298A1 (ja) | 2017-06-27 | 2017-06-27 | 下位無線基地局、上位無線基地局および無線基地局システム |
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JPWO2019003298A1 JPWO2019003298A1 (ja) | 2019-12-19 |
JP6632768B2 true JP6632768B2 (ja) | 2020-01-22 |
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JP2019526430A Active JP6632768B2 (ja) | 2017-06-27 | 2017-06-27 | 下位無線基地局、上位無線基地局および無線基地局システム |
Country Status (6)
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US (1) | US11184137B2 (ja) |
EP (1) | EP3624360B1 (ja) |
JP (1) | JP6632768B2 (ja) |
KR (1) | KR102105298B1 (ja) |
CN (1) | CN110785944B (ja) |
WO (1) | WO2019003298A1 (ja) |
Families Citing this family (2)
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JP7003324B2 (ja) * | 2019-03-25 | 2022-01-20 | 三菱電機株式会社 | 下位無線基地局、空間多重ストリーム数の制御方法、制御回路およびプログラム |
CN112637943B (zh) * | 2020-12-17 | 2023-06-09 | Oppo广东移动通信有限公司 | 射频组件工作模式控制方法、装置、电子设备和存储介质 |
Family Cites Families (22)
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JP2006005422A (ja) * | 2004-06-15 | 2006-01-05 | Nec Corp | 移動通信システム、無線基地局、移動通信方法および移動通信プログラム |
JP2006352371A (ja) * | 2005-06-14 | 2006-12-28 | Matsushita Electric Ind Co Ltd | 無線基地局装置 |
ES2560417T3 (es) * | 2006-01-18 | 2016-02-18 | Ntt Docomo, Inc. | Estación base, terminal de comunicación, método de transmisión y método de recepción |
EP2012548A4 (en) * | 2006-04-27 | 2012-01-25 | Mitsubishi Electric Corp | BASE STATION APPARATUS, BASE STATION HOST APPARATUS AND COMMUNICATION SYSTEM |
BRPI0718363B1 (pt) | 2006-10-31 | 2019-11-12 | Qualcomm Inc | projeto unificado e programação centralizada para operação simo, su-mimo e mu-mimo dinâmica para transmissões rl |
KR20080084092A (ko) * | 2007-03-14 | 2008-09-19 | 삼성전자주식회사 | 다중안테나 시스템에서 피드백 정보 제공 장치 및 방법 |
US9887754B2 (en) * | 2010-05-04 | 2018-02-06 | Qualcomm Incorporated | Method and apparatus for optimizing power distribution between symbols |
JP5555546B2 (ja) * | 2010-05-27 | 2014-07-23 | 京セラ株式会社 | 無線通信システム、無線基地局、及び基地局パラメータ調整方法 |
US9124460B2 (en) | 2010-08-31 | 2015-09-01 | Qualcomm, Incorporated | Rules for multiplexing data of different access categories in multi user MIMO wireless systems |
WO2011127855A2 (zh) * | 2011-05-17 | 2011-10-20 | 华为技术有限公司 | 通信***及其管理方法 |
JP5642102B2 (ja) * | 2012-03-27 | 2014-12-17 | ソフトバンクモバイル株式会社 | Ofdm伝送システムにおける受信装置及び無線通信制御方法 |
JP5878134B2 (ja) * | 2013-01-09 | 2016-03-08 | 株式会社Nttドコモ | 上位基地局、下位基地局、および無線通信システム |
US20150327287A1 (en) | 2013-01-22 | 2015-11-12 | Lg Electronics Inc. | Method for supporting coordinated multi-point transmission and reception scheme in wireless communication system and device for the same |
JP2016105526A (ja) * | 2013-03-13 | 2016-06-09 | シャープ株式会社 | フィードバック情報通知方法、端末装置、基地局装置、無線通信システムおよび集積回路 |
JP6227908B2 (ja) * | 2013-06-25 | 2017-11-08 | 株式会社Nttドコモ | 移動局 |
JP2015082751A (ja) | 2013-10-23 | 2015-04-27 | パナソニックIpマネジメント株式会社 | 送信装置、送信方法、及び送信プログラム |
JP2015089028A (ja) * | 2013-10-31 | 2015-05-07 | 株式会社Nttドコモ | 中央制御局、無線基地局及び無線通信制御方法 |
US9467269B2 (en) * | 2014-01-06 | 2016-10-11 | Intel IP Corporation | Systems and methods for modulation and coding scheme selection and configuration |
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- 2017-06-27 KR KR1020197037211A patent/KR102105298B1/ko active IP Right Grant
- 2017-06-27 WO PCT/JP2017/023567 patent/WO2019003298A1/ja unknown
- 2017-06-27 JP JP2019526430A patent/JP6632768B2/ja active Active
- 2017-06-27 US US16/605,478 patent/US11184137B2/en active Active
- 2017-06-27 CN CN201780092268.4A patent/CN110785944B/zh active Active
- 2017-06-27 EP EP17915567.6A patent/EP3624360B1/en active Active
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Publication number | Publication date |
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CN110785944B (zh) | 2022-04-08 |
EP3624360A1 (en) | 2020-03-18 |
JPWO2019003298A1 (ja) | 2019-12-19 |
WO2019003298A1 (ja) | 2019-01-03 |
KR102105298B1 (ko) | 2020-04-28 |
US11184137B2 (en) | 2021-11-23 |
US20210126757A1 (en) | 2021-04-29 |
CN110785944A (zh) | 2020-02-11 |
EP3624360B1 (en) | 2021-12-29 |
KR20200003212A (ko) | 2020-01-08 |
EP3624360A4 (en) | 2020-04-01 |
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