JP5458186B2 - チャネル状態情報のフィードバック方法及び端末 - Google Patents
チャネル状態情報のフィードバック方法及び端末 Download PDFInfo
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- JP5458186B2 JP5458186B2 JP2012537294A JP2012537294A JP5458186B2 JP 5458186 B2 JP5458186 B2 JP 5458186B2 JP 2012537294 A JP2012537294 A JP 2012537294A JP 2012537294 A JP2012537294 A JP 2012537294A JP 5458186 B2 JP5458186 B2 JP 5458186B2
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- 238000000034 method Methods 0.000 title description 10
- 102100025022 Mannose-6-phosphate isomerase Human genes 0.000 description 23
- 108091022912 Mannose-6-Phosphate Isomerase Proteins 0.000 description 16
- 239000011159 matrix material Substances 0.000 description 8
- 101000577063 Arabidopsis thaliana Mannose-6-phosphate isomerase 1 Proteins 0.000 description 7
- 101001094831 Homo sapiens Phosphomannomutase 2 Proteins 0.000 description 7
- 101000577065 Arabidopsis thaliana Mannose-6-phosphate isomerase 2 Proteins 0.000 description 6
- QLBALZYOTXGTDQ-VFFCLECNSA-N PGI2-EA Chemical compound O1\C(=C/CCCC(=O)NCCO)C[C@@H]2[C@@H](/C=C/[C@@H](O)CCCCC)[C@H](O)C[C@@H]21 QLBALZYOTXGTDQ-VFFCLECNSA-N 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000007850 degeneration Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
Classifications
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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
- H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
-
- 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
-
- 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
- H04B7/0636—Feedback format
- H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Mobile Radio Communication Systems (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Description
LTEにおけるアップリンクチャネル情報のフィードバック方式は、PUCCH(物理アップリンク制御チャネル)における周期チャネル情報フィードバックとPUSCH(物理アップリンク共有チャネル)における非周期チャネル情報フィードバックとの両種類に分けられる。PUCCHは制御チャネルであり、フィードバックの信頼性が高いが、そのフィードバックリソースの価値が高いため、フィードバックオーバーヘッドが厳格に制限される。通常には、1回のCSIのフィードバック量(PMI、CQI、RIにおける1種又は複数のを含む)は11bitを超えてはいけない。PUSCHはより多くのCSIフィードバックリソースを提供することができるが、信頼性が保証できなく、且つデータ伝送のリソースを占用するため、データ業務の伝送に影響がある。
ダブルコードブックとダブルPMIフィードバックを定義する、或いはダブルコダブルコードブックに相当するシングルコードブックとダブルPMIフィードバックを定義するという両種類の実現方式を含む。
1)1つのサブバンドのプリコーディング/フィードバックの構造は2つのマトリックスからなる。
2)2つのマトリックスにおける各々のマトリックスはいずれも1つの単独のコードブックに従属する。基地局とUEは同時でコードブックを予知しており、フィードバックしたコードワードは異なる時間と異なるサブバンドで変化してもよい。
3)1つのマトリックスは広帯域或いは長期チャネルの属性を表す。もう1つのマトリックスは確定した周波数帯域の或いは短期チャネルの属性を表す。
4)使用するマトリックスコードブックは有限の可算のマトリックス集合の形式で表され、且つUEと基地局にとって、各々のマトリックスがいずれも知り得るものである。
5)その中の1つのマトリックスは固定のマトリックスであってもよく、フィードバックする必要がない。この時、シングルコードブックフィードバック(高ランクと低ランクの非関係チャネルの場合に使用する恐れがある)に退化することと相当する。
チャネル情報をフィードバックする必要な1つのサブバンド又は複数の結合サブバンドに対して、UEが基地局に2つのPMI情報(ある場合に必ずしもフィードバックしなく、1つのPMIを予めに設定して固定値として、フィードバックしなくてもよい)をフィードバックし、それぞれPMI1とPMI2であり、PMI1が1つのコードブックC1におけるコードワードW1に対応し、PMI2がもう1つのコードブックC2におけるコードワードW2に対応する。基地局端には同じC1とC2の情報があり、PMI1とPMI2を受信した後、対応なコードブックC1とC2から対応なコードワードW1とW2を探し出し、且つ所定の関数ルールFに基づいて、W=F(W1、W2)を計算してチャネル情報Wを取得する。
Claims (20)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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CN201010290522.1A CN101944985B (zh) | 2010-09-20 | 2010-09-20 | 一种信道状态信息反馈方法 |
CN201010290522.1 | 2010-09-20 | ||
PCT/CN2011/001264 WO2012037772A1 (zh) | 2010-09-20 | 2011-08-01 | 一种信道状态信息反馈方法和终端 |
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JP2013509838A JP2013509838A (ja) | 2013-03-14 |
JP5458186B2 true JP5458186B2 (ja) | 2014-04-02 |
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JP2012537294A Active JP5458186B2 (ja) | 2010-09-20 | 2011-08-01 | チャネル状態情報のフィードバック方法及び端末 |
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US (1) | US8532218B2 (ja) |
EP (1) | EP2621107B1 (ja) |
JP (1) | JP5458186B2 (ja) |
KR (1) | KR101352600B1 (ja) |
CN (1) | CN101944985B (ja) |
BR (1) | BR112012012867B1 (ja) |
ES (1) | ES2776104T3 (ja) |
MX (1) | MX2012006338A (ja) |
RU (1) | RU2510135C2 (ja) |
WO (1) | WO2012037772A1 (ja) |
Families Citing this family (19)
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CN101854236B (zh) * | 2010-04-05 | 2015-04-01 | 中兴通讯股份有限公司 | 一种信道信息反馈方法和系统 |
CN101877627B (zh) * | 2010-06-21 | 2015-09-16 | 中兴通讯股份有限公司 | 信道状态信息的反馈方法及终端 |
CN101944985B (zh) | 2010-09-20 | 2015-03-25 | 中兴通讯股份有限公司 | 一种信道状态信息反馈方法 |
WO2012129810A1 (en) * | 2011-03-31 | 2012-10-04 | Huawei Technologies Co., Ltd. | Method in a wireless communication system |
CN102394677B (zh) * | 2011-06-30 | 2014-12-10 | 电信科学技术研究院 | 一种传输预编码矩阵指示信息的方法及装置 |
CN102299764B (zh) * | 2011-07-08 | 2014-04-16 | 电信科学技术研究院 | 一种上行闭环预编码信息指示方法及装置 |
CN102916768B (zh) * | 2012-09-19 | 2016-06-29 | 华为技术有限公司 | 高速专用物理控制信道的反馈方法、装置和系统 |
US9014091B2 (en) * | 2012-09-24 | 2015-04-21 | Intel Corporation | Network architecture for dual active personae cellular mobile devices |
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CN104184560A (zh) * | 2013-05-24 | 2014-12-03 | 中兴通讯股份有限公司 | 信道状态信息反馈方法和终端 |
CN107104717B (zh) | 2013-06-05 | 2020-06-30 | Lg电子株式会社 | 在无线通信系统中发送信道状态信息的方法和装置 |
US20140362783A1 (en) * | 2013-06-07 | 2014-12-11 | Nec Laboratories America, Inc. | Channel State Information (CSI) Feedback and Subsampling |
CN105515730B (zh) * | 2014-09-22 | 2018-07-10 | 中兴通讯股份有限公司 | 信道信息的反馈方法、装置及系统 |
WO2016120461A1 (en) * | 2015-01-30 | 2016-08-04 | Telefonaktiebolaget Lm Ericsson (Publ) | Communicating control data in a wireless communication network |
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CN109891767A (zh) * | 2016-11-26 | 2019-06-14 | 华为技术有限公司 | 一种确定预编码矩阵的方法、装置及系统 |
KR102158159B1 (ko) * | 2017-03-31 | 2020-09-21 | 엘지전자 주식회사 | 무선 통신 시스템에서 상향링크 데이터 전송 방법 및 이를 위한 장치 |
CN111064499B (zh) | 2018-10-16 | 2023-11-10 | 华为技术有限公司 | 指示和确定预编码向量的方法以及通信装置 |
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CN101944985B (zh) * | 2010-09-20 | 2015-03-25 | 中兴通讯股份有限公司 | 一种信道状态信息反馈方法 |
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- 2011-08-01 WO PCT/CN2011/001264 patent/WO2012037772A1/zh active Application Filing
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Publication number | Publication date |
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BR112012012867B1 (pt) | 2021-09-21 |
KR20120080235A (ko) | 2012-07-16 |
RU2510135C2 (ru) | 2014-03-20 |
MX2012006338A (es) | 2012-10-09 |
JP2013509838A (ja) | 2013-03-14 |
ES2776104T3 (es) | 2020-07-29 |
EP2621107A4 (en) | 2017-02-15 |
WO2012037772A1 (zh) | 2012-03-29 |
US8532218B2 (en) | 2013-09-10 |
CN101944985A (zh) | 2011-01-12 |
EP2621107A1 (en) | 2013-07-31 |
CN101944985B (zh) | 2015-03-25 |
EP2621107B1 (en) | 2019-11-27 |
KR101352600B1 (ko) | 2014-01-17 |
BR112012012867A2 (pt) | 2019-12-31 |
US20120224652A1 (en) | 2012-09-06 |
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