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Samsung patents method to restrict local data transfers in wireless networks

Samsung has filed a patent application for a method that helps mobile devices determine if they are within a specific local area data network zone. If the device is inside the zone, it can send certain types of data through the network's control channel; if it is outside, that specific data transmission is blocked.

Why it mattersThis filing improves how cellular networks manage data flow for specific local services, ensuring data is only sent when the device is in the correct area.

In the filing’s own words

There is provided a method of performing user data communication between a UE and a network via data transmission on the Control Plane, CP, comprising the steps of: the UE determines if it is inside or outside a LADN service area; if it is inside the LADN service area, the UE is permitted to transmit user data over a Non Access Stratum for an LADN PDU session; and if it is outside the LADN service area, the UE is not permitted to transmit user data over a Non Access Stratum for an LADN PDU session; wherein the user data is cellular internet of things (CIoT) user data.

What exactly they claim (claim 1)

1. A method performed by a terminal in a wireless communication system, the method comprising: receiving, from an access and mobility management function (AMF), information on a local area data network (LADN); based on the information, identifying whether the terminal is in a LADN service area or out of the LADN service area; and in case that the terminal is in the LADN service area, transmitting, to the AMF, user data via a control plane for a protocol data unit (PDU) session for the LADN; wherein in case that the terminal is out of the LADN service area, the terminal is not allowed to transmit, to the AMF, the user data via the control plane for the PDU session for the LADN.

Facts

Company: Samsung (Samsung Electronics Co., Ltd.)
Official title: METHOD AND APPARATUS FOR IMPROVEMENTS IN AND RELATING TO AN APPLICATION OF CONTROL PLANE DATA TO LOCAL AREA DATA NETWORK PDU SESSIONS IN A WIRELESS COMMUNICATION SYSTEM
Publication number: US20260270847A1
Application number: 19165827
Filed: Apr 8, 2024
Published: Sep 10, 2026
Inventors: 2
Claims: 15

Classified under

H04W 48/04 Electricity & electronicsH04W 4/021 Electricity & electronicsH04W 76/20 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.