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1. JP2014222916 - STRUCTURED MIMO CODEBOOK

Office
Japon
Numéro de la demande 2014139123
Date de la demande 04.07.2014
Numéro de publication 2014222916
Date de publication 27.11.2014
Numéro de délivrance 5869061
Date de délivrance 15.01.2016
Type de publication B2
CIB
H04J 99/00
HÉLECTRICITÉ
04TECHNIQUE DE LA COMMUNICATION ÉLECTRIQUE
JCOMMUNICATION MULTIPLEX
99Matière non prévue dans les autres groupes de la présente sous-classe
CPC
H04B 7/0469
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
0413MIMO systems
0456Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
046taking physical layer constraints into account
0469taking special antenna structures, e.g. cross polarized antennas into account
H04B 7/0615
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
06at the transmitting station
0613using simultaneous transmission
0615of weighted versions of same signal
H04B 7/0658
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
06at the transmitting station
0613using simultaneous transmission
0615of weighted versions of same signal
0619using feedback from receiving side
0658Feedback reduction
H04B 7/0626
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
06at the transmitting station
0613using simultaneous transmission
0615of weighted versions of same signal
0619using feedback from receiving side
0621Feedback content
0626Channel coefficients, e.g. channel state information [CSI]
H04B 7/0478
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
0413MIMO systems
0456Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
0478Special codebook structures directed to feedback optimization
H04B 7/0465
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
0413MIMO systems
0456Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
046taking physical layer constraints into account
0465taking power constraints at power amplifier or emission constraints, e.g. constant modulus, into account
Déposants QUALCOMM INCORPORATED
クゥアルコム・インコーポレイテッド
Inventeurs PETER GAHL
ピーター・ガール
MONTOJO JUAN
ジュアン・モントジョ
STEFAN GEIRHOFER
ステファン・ガイアホファー
Mandataires 蔵田 昌俊
福原 淑弘
野河 信久
峰 隆司
河野 直樹
砂川 克
井関 守三
井上 正
佐藤 立志
岡田 貴志
堀内 美保子
Données relatives à la priorité 13167209 23.06.2011 US
61/358,368 24.06.2010 US
Titre
(EN) STRUCTURED MIMO CODEBOOK
(JA) 構造化されたMIMOコードブック
Abrégé
(EN)

PROBLEM TO BE SOLVED: To provide a method of wireless communication which includes selecting a codebook from a plurality of codebooks in accordance with antenna characteristics, and transmitting an indication of the selected codebook.

SOLUTION: Each of the plurality of codebooks is associated with one of a plurality of antenna characteristics. Channel state information is received from user equipment. The channel state information may be used to determine downlink scheduling and/or precoding. The channel state information includes feedback elements associated with different subband granularity. The feedback elements indicate a selection of a subset of precoder column vectors and/or a phase offset between two groups of transmit antennas.

COPYRIGHT: (C)2015,JPO&INPIT


(JA)

【課題】アンテナの特徴により複数のコードブックから1つのコードブックを選択することと、選択されたコードブックの指示を送信することと、を含む無線通信方法を提供する。
【解決手段】複数のコードブックの各々は、複数のアンテナの特徴のうちの1つと関連付けられる。ユーザ装置からチャネル状態情報が受信される。チャネル状態情報は、ダウンリンクスケジューリング及び/又はプリコーディングを決定するために用いる。チャネル状態情報は、異なるサブバンド粒度と関連付けられたフィードバック要素を含む。フィードバック要素は、プリコーダ列ベクトルの部分組の選択及び/又は送信アンテナの2つのグループ間の位相オフセットを示す。
【選択図】図5