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Apple patents method to cut data size for multi-antenna wireless feedback

Apple describes a way for phones to send less data back to cell towers when using multiple antennas to improve signal quality. The device prioritizes the most important signal details and skips the less critical ones to make the report smaller.

Why it mattersThis is a technical improvement to how mobile data is transmitted, which could help make 5G and future networks more efficient by reducing unnecessary data traffic.

In the filing’s own words

Apparatus and methods are provided for uplink control information (UCI) omission. A user equipment (UE) in a wireless network receives signals from a plurality of transmission and reception points (TRPs) and determines, based on the signals, uplink control information (UCI) for multiple TRP (mTRP) coherent joint transmission (CJT) channel state information (CSI) feedback using a codebook W=W 1 *W 2 *W f for a spatial basis selection matrix W 1, a combination coefficient matrix W 2, and a frequency basis selection matrix W f. The UE divides linear combination coefficient information into a first group and a second group based on respective priorities associated with linear combination coefficients in the combination coefficient matrix W 2. The UE transmits a reduced-size CSI report comprising the linear combination coefficient information in the first group and omitting at least a portion of the linear combination coefficient information in the second group.

What exactly they claim (claim 1)

1. A method for operating a user equipment (UE) for communication in a wireless network, the method comprising: receiving, at the UE, signals from a plurality of transmission and reception points (TRPs); determining, at the UE, based on the signals, uplink control information (UCI) for multiple TRP (mTRP) coherent joint transmission (CJT) channel state information (CSI) feedback using a codebook W=W 1 *W 2 *W f for a spatial basis selection matrix W 1, a combination coefficient matrix W 2, and a frequency basis selection matrix W f; dividing, at the UE, linear combination coefficient information into a first group and a second group based on respective priorities associated with linear combination coefficients in the combination coefficient matrix W 2; and transmitting, over an uplink channel from the UE to one or more of the plurality of TRPs, a reduced-size CSI report comprising the linear combination coefficient information in the first group and omitting at least a portion of the linear combination coefficient information in the second group.

Facts

Company
Apple (APPLE INC.)
Official title
UCI OMISSION FOR TYPE II CODEBOOK TO SUPPORT MULTI-TRP COHERENT JOINT TRANSMISSION
Publication number
US20260269906A1
Application number
19166334
Filed
Apr 5, 2023
Published
Sep 10, 2026
Inventors
5
Claims
21

Classified under

H04B 7/0626 Electricity & electronicsH04L 5/0044 Electricity & electronics
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.