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Samsung patents smoother Wi-Fi switching for multi-link devices

Samsung has filed a patent for a method that helps Wi-Fi devices switch between access points without dropping their connection. The system allows a device to prepare new links with a target router while it is still connected to the current one, ensuring a seamless handover even if the new router's security port is not fully open yet.

Why it mattersThis could make Wi-Fi roaming less noticeable for users with advanced multi-link devices, reducing brief interruptions during movement.

In the filing’s own words

Methods and apparatuses for procedures for seamless mobility domain (SMD) in WLANS. A method performed by a current AP MLD includes receiving, from a non-AP MLD via a preparation request frame during a preparation stage of a roam procedure for the non-AP MLD to roam from the current AP MLD to a target AP MLD, information indicating one or more links to be setup with the target AP MLD. The method includes receiving, from the target AP MLD, information indicating that the one or more links has been setup, where an IEEE 802.1X controlled port of the target AP MLD is in a blocked state such that general data traffic cannot pass directly between the non-AP MLD and the target AP MLD. The method includes transmitting, to the non-AP MLD via a preparation response frame, information indicating that at least one of the indicated links has been setup.

What exactly they claim (claim 1)

1. A method performed by a current access point (AP) multi-link device (MLD), the method comprising: receiving, from a non-AP MLD via a preparation request frame during a preparation stage of a roam procedure for the non-AP MLD to roam from the current AP MLD to a target AP MLD, information indicating one or more links to be setup with the target AP MLD; receiving, from the target AP MLD, information indicating that the one or more links has been setup, wherein an IEEE 802.1X controlled port of the target AP MLD is in a blocked state such that general data traffic cannot pass directly between the non-AP MLD and the target AP MLD; and transmitting, to the non-AP MLD via a preparation response frame, information indicating that at least one of the indicated links has been setup.

Facts

Company
Samsung (Samsung Electronics Co., Ltd.)
Official title
PROCEDURES FOR SMD OPERATION IN WLANS
Publication number
US20260281824A1
Application number
19555698
Filed
Mar 3, 2026
Published
Sep 17, 2026
Inventors
6
Claims
20

Classified under

H04W 36/0016 Electricity & electronicsH04W 36/08 Electricity & electronicsH04W 76/15 Electricity & electronicsH04W 84/12 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.