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Samsung patents method to fix signal distortion in 5G network connections

Samsung describes a technique for base stations to correct signal distortion when detecting initial connection requests from devices. The method divides the signal into segments, calculates correction weights for each, and uses interpolation to smooth out errors for more accurate detection. This helps ensure the network reliably identifies when a phone or device is trying to connect.

Why it mattersThis improves the reliability of the initial handshake between devices and cell towers, which is a routine but critical part of maintaining stable wireless connections.

In the filing’s own words

A method performed by a base station in a wireless communication system, includes receiving, from a user equipment (UE), a physical random access channel (PRACH) preamble, detecting the received PRACH preamble by identifying a first frequency response of a PRACH decimation filter in a PRACH detector, dividing subcarriers for receiving the PRACH preamble into subcarrier segments, obtaining a representative weight for each subcarrier segment of the subcarrier segments, applying linear interpolation to representative weights of adjacent subcarrier segments from among the subcarrier segments, compensating for distortion in the first frequency response of each segment of the subcarrier segments by applying, to a first subcarrier signal of the PRACH preamble, a weight to which the linear interpolation has been applied as a compensation weight, and outputting a second subcarrier signal corresponding to a second frequency response in which the distortion has been compensated.

What exactly they claim (claim 1)

1. A method performed by a base station in a wireless communication system, the method comprising: receiving, from a user equipment (UE), a physical random access channel (PRACH) preamble; detecting the received PRACH preamble by identifying a first frequency response of a PRACH decimation filter in a PRACH detector; dividing subcarriers for receiving the PRACH preamble into subcarrier segments; obtaining a representative weight for each subcarrier segment of the subcarrier segments; applying linear interpolation to representative weights of adjacent subcarrier segments from among the subcarrier segments; compensating for distortion in the first frequency response of each segment of the subcarrier segments by applying, to a first subcarrier signal of the PRACH preamble, a weight to which the linear interpolation has been applied as a compensation weight; and outputting a second subcarrier signal corresponding to a second frequency response in which the distortion has been compensated.

Facts

Company
Samsung (SAMSUNG ELECTRONICS CO., LTD.)
Official title
METHOD AND APPARATUS FOR COMPENSATING PRACH DECIMATION FILTER FOR DETECTION OF PRACH PREAMBLE IN WIRELESS COMMUNICATION SYSTEM
Publication number
US20260271089A1
Application number
19559054
Filed
Mar 6, 2026
Published
Sep 10, 2026
Inventors
1
Claims
20

Classified under

H04W 74/0833 Electricity & electronicsH04L 27/265 Electricity & electronicsH04W 72/0446 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.