Huawei Patent for Sidelink Data Transmission and Power Control

ChangeBridge: Patent Grants - Networking (H04L)

Published March 17th, 2026

Detected March 23rd, 2026

Summary

The USPTO has granted Huawei Technologies Co., Ltd. a patent (US12581425B2) for a sidelink data transmission method and related apparatus. The patent covers techniques for updating transmit power based on channel state information received from multiple terminals to optimize data transmission.

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What changed

The United States Patent and Trademark Office (USPTO) has granted patent US12581425B2 to Huawei Technologies Co., Ltd. for a method and apparatus related to sidelink data transmission and power control. The patent details a system where a transmitting terminal sends reference signals, detects channel state information from multiple receiving terminals, and updates its transmit power accordingly. User data is then sent in frequency domain units where the updated power exceeds a preset threshold.

This patent grant is primarily informational and does not impose new regulatory obligations on companies. However, it signifies an advancement in wireless communication technology, particularly for direct device-to-device communication (sidelink), which is relevant for technologies like 5G and beyond. Companies operating in the telecommunications sector, especially those involved in wireless network infrastructure and device development, may find this patent relevant for competitive analysis and intellectual property considerations.

Source document (simplified)

← USPTO Patent Grants

Sidelink data transmission method and related apparatus

Grant US12581425B2 Kind: B2 Mar 17, 2026

Assignee

Huawei Technologies Co., Ltd.

Inventors

Bichai Wang, Xueru Li

Abstract

A first transmitting terminal sends a first channel state information-reference signal CSI-RS in N frequency domain units, where N is a positive integer. The first transmitting terminal detects channel state information CSI sent by K receiving terminals, where the CSI sent by the K receiving terminals is determined based on the first CSI-RS, and K is a positive integer. The first transmitting terminal updates a transmit power of the first transmitting terminal in the N frequency domain units based on the CSI sent by the K receiving terminals. When updated powers of F frequency domain units in the N frequency domain units are greater than a preset threshold, the first transmitting terminal sends user data in at least one of the F frequency domain units, where F is a positive integer less than or equal to N.