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ApplePatent applicationNetworks & wirelessInterest 6/10

Apple patents method to sync multiple cell towers for faster wireless links

Patent drawing
Patent drawing from the official filing.

Apple describes a way for multiple cell towers to send data to a phone at the same time without the signals interfering with each other. The system uses specific calculations to adjust for the slight time differences it takes for signals to travel from different towers, ensuring they arrive in sync.

Why it mattersThis could lead to more stable and faster 5G or 6G connections by making it easier for networks to combine signals from nearby towers efficiently.

In the filing’s own words

Techniques for supporting multi-TRP CJT are described. More specifically, in the context of multiple transmission and reception point (TRP) coherent joint transmissions (CJTs), embodiments are directed to one or more of handling different delays for different TRPs/TRP groups, minimizing channel state information (CSI) overhead, and codebook subset restriction (CBSR). For example, indications of which TRPs and/or TRP groups should utilize a common correction factor or different correction factors may be utilized to reduce overhead. In another example, indications of which TRPs and/or TRP groups should utilize a common correction factor or different correction factors may be utilized to reduce overhead. In yet another example, support for restricting spatial bases for which a UE will search and/or report CSI information using one or more CBSRs for various TRPs. Additionally, design details for codebook refinements to support these features are provided.

What exactly they claim (claim 1)

1. A method for wireless communication by a network, the method comprising: identifying channel state information (CSI) corresponding to a user equipment (UE); determining one or more channel properties of a channel based on the CSI, the channel for utilization by a first transmission and reception point (TRP) in a coherent joint transmission (CJT) performed by a plurality of TRPs; selecting an intermediate frequency basis of the channel, the intermediate frequency basis selected based on a codebook and the one or more channel properties; selecting a correction factor for the intermediate frequency basis of the channel based on the codebook and the one or more channel properties, the correction factor to adapt the channel for the CJT based on a signal propagation time of the channel; and generating a precoding matrix for the channel based on the intermediate frequency basis and the correction factor.

Facts

Company
Apple (Apple Inc.)
Official title
TECHNIQUES FOR SUPPORTING COHERENT JOINT TRANSMISSION WITH MULTIPLE TRANSMISSION AND RECEPTION POINTS
Publication number
US20260312636A1
Application number
19482705
Filed
May 11, 2023
Published
Oct 8, 2026
Inventors
6
Claims
22

Classified under

H04B 7/0417 Electricity & electronicsH04B 7/024 Electricity & electronicsH04B 7/0626 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.