JP2023100740A - 端末、無線通信方法、及びシステム - Google Patents
端末、無線通信方法、及びシステム Download PDFInfo
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- 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
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- 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
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- 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
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- H04L27/2627—Modulators
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Abstract
Description
本出願は、2018年11月21日に出願された、米国仮特許出願第62/770,731号、発明の名称「Method for Quantization of Combination Coefficients Associated with Frequency Domain Compression」、及び2019年1月28日に出願された、米国仮特許出願第62/797,811号、発明の名称「Method for Quantization of Combination Coefficients Associated with Frequency Domain Compression」の優先権を主張する。優先権を主張する上記の両出願は、参照によりその全体が本願に組み込まれる。
ランク1の場合、L=2、K=4のオーバーヘッド率は、120/142%≒85%;
ランク1の場合、L=4、K=6のオーバーヘッド率は、240/279%≒86%;
ランク2の場合、L=2、K=8のオーバーヘッド率は、240/273%≒87%;及び
ランク2の場合、L=4、K=12のオーバーヘッド率は、480/543%≒88%
上記の分析は、全体のオーバーヘッドのかなりの割合が、SBの振幅及び位相の報告によって占められていることを示している。NSB個のSBのタイプII CSIプリコーディングベクトルは、次式に記載のようにシングルレイヤ送信よって生成されてもよい。
W(Nt×NSB)=WspaceWcoeff (式1)
式1において、Wspace(Nt×2L)は広帯域の空間2D-DFTビームを表し、Lはビーム数を表し、Ntはポート数を表し、Wcoeff(2L×NSB)はSB複素数組み合わせ係数行列を表す。周波数領域(FD)の圧縮を考慮すると、Wcoeff内の情報を更に圧縮することができる。
本発明の第1の実施例の1つ以上の実施形態によれば、各2D-DFT空間ビームに対して、nビットの広帯域(WB)振幅が識別されてもよい。
本発明の第2の実施例の1つ以上の実施形態によれば、各DFT基底ベクトル(FD成分)に対して、mビットの振幅が識別されてもよい。第2の実施例のオプション1では、mは、所定値のセットに基づく。1つ以上の実施形態では、値のセットが、3GPP規格において、例えば図3に示したように、3GPP TS 38.214のTable 5.2.2.2.3-2において定義されていてもよい。
本発明の第3の実施例の1つ以上の実施形態によれば、K0(<2LM)個の報告係数に対して、差動振幅(WB振幅及びFD成分振幅を参照)の量子化を以下のように達成することができる。K1(<K0)個の主係数(最も強い係数)に対して、
本発明の第4の実施例の1つ以上の実施形態によれば、最も強いK1個の係数に対して、
例えば、他の(K0-K1)個の係数に対して、
本発明の第4の実施例の1つ以上の実施形態によれば、K0-K1個の係数に対して、
本発明の第7の実施例の1つ以上の実施形態によれば、K1の値をNWによって直接的に設定することができる。代替的に、K1は、K1=floor(p×K0)又はK1=ceil(p×K0)、但しp≦1、のようなK0の少数部分として定義されてもよい。また、前述の実施例では、p=βであることも考えられる。更に、具体的なUE動作は、以下のように要約することができる。
本発明の第8の実施例の1つ以上の実施形態によれば、K1個の最も強い係数を識別するために1つ以上のシナリオが存在する。
Claims (5)
- 第1の個数の振幅を示す値が規定されている第1のテーブルと、前記第1の個数と異なる第2の個数の振幅を示す値が規定されている第2のテーブルとが、前記CSI報告の生成における振幅の量子化のために設定されている、
請求項1に記載の端末。 - 前記K1は、上位レイヤパラメータに基づいて設定される、
請求項1に記載の端末。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
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US201862770731P | 2018-11-21 | 2018-11-21 | |
US62/770,731 | 2018-11-21 | ||
US201962797811P | 2019-01-28 | 2019-01-28 | |
US62/797,811 | 2019-01-28 | ||
JP2021528345A JP2022511734A (ja) | 2018-11-21 | 2019-11-21 | 周波数領域の圧縮に関連付けられた組み合わせ係数を量子化するための方法 |
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JP2021528345A Division JP2022511734A (ja) | 2018-11-21 | 2019-11-21 | 周波数領域の圧縮に関連付けられた組み合わせ係数を量子化するための方法 |
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JP2023071378A Pending JP2023100740A (ja) | 2018-11-21 | 2023-04-25 | 端末、無線通信方法、及びシステム |
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US (1) | US11888564B2 (ja) |
EP (1) | EP3884587A1 (ja) |
JP (2) | JP2022511734A (ja) |
CN (1) | CN113261209B (ja) |
WO (1) | WO2020106981A1 (ja) |
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WO2020118501A1 (en) * | 2018-12-11 | 2020-06-18 | Qualcomm Incorporated | Basis report for compressed csi feedback with non-contiguous subband configuration |
WO2020118549A1 (en) * | 2018-12-12 | 2020-06-18 | Qualcomm Incorporated | Coefficients report for compressed csi feedback |
EP3895330B1 (en) * | 2018-12-12 | 2023-07-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Reporting of coefficients for channel state information |
WO2020150936A1 (en) | 2019-01-23 | 2020-07-30 | Qualcomm Incorporated | Precoder matrix quantization for compressed csi feedback |
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US20130051321A1 (en) * | 2011-08-24 | 2013-02-28 | Qualcomm Incorporated | Multiple description coding (mdc) for channel state information reference signals (csi-rs) |
KR20150018792A (ko) * | 2012-04-20 | 2015-02-24 | 엘지전자 주식회사 | 무선 접속 시스템에서 하향링크 빔 포밍 방법 및 이를 위한 장치 |
JP6121118B2 (ja) * | 2012-09-07 | 2017-04-26 | 株式会社Nttドコモ | 無線通信方法、ユーザ端末、無線基地局及び無線通信システム |
US9680552B2 (en) * | 2013-04-16 | 2017-06-13 | Lg Electronics Inc. | Method and apparatus for reporting channel state information in wireless communication system |
US9906280B2 (en) * | 2014-07-14 | 2018-02-27 | Intel Corporation | Principal eigen beam quantization for MIMO systems |
US10567060B2 (en) * | 2014-10-24 | 2020-02-18 | Samsung Electronics Co., Ltd. | Efficient vector quantizer for FD-MIMO systems |
US9654195B2 (en) * | 2014-11-17 | 2017-05-16 | Samsung Electronics Co., Ltd. | Methods to calculate linear combination pre-coders for MIMO wireless communication systems |
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US9973249B2 (en) * | 2014-12-23 | 2018-05-15 | Samsung Electronics Co., Ltd. | Channel state information feedback schemes for FD-MIMO |
WO2016163832A1 (ko) * | 2015-04-09 | 2016-10-13 | 삼성전자 주식회사 | 다중 안테나를 이용하는 무선 통신 시스템에서 송신 전력 제어 방법 및 장치 |
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WO2018058483A1 (zh) * | 2016-09-29 | 2018-04-05 | 华为技术有限公司 | 传输信道状态信息的方法和装置 |
US10200103B2 (en) * | 2016-11-23 | 2019-02-05 | Samsung Electronics Co., Ltd. | Method and apparatus to enable multi-resolution CSI reporting in advanced wireless communication systems |
US10911195B2 (en) * | 2017-01-08 | 2021-02-02 | Lg Electronics Inc. | Method for uplink transmission and reception in wireless communication system and apparatus therefor |
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- 2019-11-21 CN CN201980084943.8A patent/CN113261209B/zh active Active
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US11888564B2 (en) | 2024-01-30 |
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