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US 11,695,461 B2Granted
Feedback overhead reduction for precoders under high rank spatial channels
AssigneeApple Inc.
InventorsSai Sravan Bharadwaj Karri, Swaminathan Balakrishnan, Junsung Lim, Haitong Sun, Johnson O. Sebeni, Faraz Faheem
Life of this patent
Estimating the term…
Abstract
Apparatuses, systems, and methods for a wireless device to encode channel state information (CSI), e.g., enhanced type II CSI. A common frequency basis may be selected. Spatial-frequency coefficients, frequency basis related information, and/or spatial basis related information may be determined. At least a portion of the coefficients and/or information may be encoded in a CSI report.
Claims20
An apparatus, comprising:
- a processor configured to cause a user equipment device (UE) to:
- establish a connection with a base station;
- receive, from the base station, control information for reporting channel state information, wherein the control information specifies:
- a technique for channel state information reporting, wherein the technique includes omitting certain coefficients in reporting;
- a plurality of layers including 3 or more layers;
- a plurality of L beams;
- and
- a plurality of N subbands;
- determine a plurality of coefficients for the reporting according to the technique;
- and
- transmit, to the base station, a first channel state information report according to the control information, wherein the first channel state information report omits at least one coefficient of the plurality of coefficients.
8 more elements
An apparatus, comprising:
- a processor configured to cause a user equipment device (UE) to:
- establish a connection with a base station;
- receive, from the base station, control information for reporting channel state information, wherein the control information specifies:
- a technique for channel state information reporting, wherein the technique includes compression;
- a plurality of layers including 3 or more layers;
- a plurality of L beams;
- and
- a plurality of N subbands;
- determine a plurality of coefficients for reporting according to the technique;
- and
- transmit, to the base station, a first channel state information report according to the control information, wherein the first channel state information report omits at least one coefficient of the plurality of coefficients.
8 more elements
An apparatus, comprising:
- a processor configured to cause a base station to:
- establish a connection with a user equipment device (UE);
- transmit, to the UE, control information for reporting channel state information, wherein the control information specifies:
- a technique for channel state information reporting, wherein the technique includes omitting certain coefficients in reporting;
- a plurality of layers including 3 or more layers;
- a plurality of L beams;
- and
- a plurality of N subbands;
- and
- receive, from the UE, a first channel state information report according to the control information, wherein the first channel state information report omits at least one coefficient of a plurality of coefficients.
7 more elements
Dependencies are inferred from the claim text.