Linear combination codebook for csi reporting in advanced wireless communication systems
US-2018034519-A1 · Feb 1, 2018 · US
Method for quantization of combination coefficients associated with frequency domain compression
US11888564B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11888564-B2 |
| Application number | US-201917292021-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 21, 2019 |
| Priority date | Nov 21, 2018 |
| Publication date | Jan 30, 2024 |
| Grant date | Jan 30, 2024 |
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- Title
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Abstract
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A wireless communication method for a terminal, a terminal, and a wireless communication system receive one or more Channel State Information Reference Signals (CSI-RSs). Further, quantization of combination coefficients of the one or more CSI-RSs corresponding to one or more spatial beams Discrete Fourier Transform (DFT) basis vector amplitudes is performed.
First claim
Opening claim text (preview).
What is claimed is: 1. A terminal comprising: a processor that performs quantization of K 1 coefficients to generate a channel state information (CSI) report; and a transmitter that transmits the CSI report, wherein a maximum value of the K 1 is K 0 and the K 0 is obtained by the following formula: K 0 =┌β×2 LM┘,β∈{ ¾,½,¼}, where L represents a number of beams and M represents a number of vectors associated with a subband. 2. The terminal according to claim 1 , wherein a first table with values indicating a first number of amplitudes and a second table with values indicating a second number of amplitudes that is different from the first number of amplitudes, are configured for quantization of amplitudes in generation of the CSI report. 3. The terminal according to claim 1 , wherein the K 1 is configured based on a higher layer parameter. 4. A radio communication method for a terminal, comprising: performing quantization of K1 coefficients to generate a channel state information (CSI) report; and transmitting the CSI report, wherein a maximum value of the K 1 is K 0 and the K 0 is obtained by the following formula: K 0 =┌β×2 LM┘,β∈{ ¾,½,¼}, where L represents a number of beams and M represents a number of vectors associated with a subband. 5. A system comprising a terminal and a base station, wherein the terminal comprises: a processor that performs quantization of K1 coefficients to generate a channel state information (CSI) report; and a transmitter that transmits the CSI report, the base station receives the CSI report, wherein a maximum value of the K 1 is K 0 and the K 0 is obtained by the following formula: K 0 =┌β×2 LM┘,β∈{ ¾,½,¼}, where L represents a number of beams and M represents a number of vectors associated with a subband.
Assignees
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Classifications
- H04B7/0486Primary
taking channel rank into account · CPC title
- H04B7/0626Primary
Channel coefficients, e.g. channel state information [CSI] · CPC title
Antenna weights or vector/matrix coefficients · CPC title
Differential feedback · CPC title
using vector or matrix manipulations · CPC title
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Frequently asked questions
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- What does patent US11888564B2 cover?
- A wireless communication method for a terminal, a terminal, and a wireless communication system receive one or more Channel State Information Reference Signals (CSI-RSs). Further, quantization of combination coefficients of the one or more CSI-RSs corresponding to one or more spatial beams Discrete Fourier Transform (DFT) basis vector amplitudes is performed.
- Who is the assignee on this patent?
- Ntt Docomo Inc, Docomo Innovations Inc
- What technology area does this patent fall under?
- Primary CPC classification H04B7/0486. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 30 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).