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SamsungGranted patentNetworks & wirelessInterest 3/10

Samsung patents method to switch devices between 4G and 5G networks

This patent describes a way for a device to figure out which network it should be using when a connection attempt is rejected. If the device is told it is in the wrong network, it automatically redirects itself to the correct one, such as moving from a 5G core to a 4G core or vice versa.

Why it mattersThis helps ensure that connected devices, like smart meters or sensors, stay connected to the right network without needing manual fixes.

In the filing’s own words

The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. Disclosed is a method of redirecting a User Equipment, UE, from a serving network to a target network, whereby the serving network rejects a service request message.

What exactly they claim (claim 1)

1. A method performed by a user equipment (UE), in a communication system, the method comprising: transmitting a service request message; in case that the service request message is transmitted to an access and mobility management function (AMF): receiving, from the AMF, a first service reject message including a fifth generation (5G) mobility management (5GMM) cause value of #31, and identifying that redirection to an evolved packet core (EPC) is required based on the 5GMM cause value; and in case that the service request message is transmitted to a mobility management entity (MME): receiving, from the MME, a second service reject message including an EPC mobility management (EMM) cause value of #31, and identifying that redirection to a 5G core network (5GCN) is required based on the EMM cause value.

Facts

Company
Samsung (Samsung Electronics Co., Ltd.)
Official title
Method and apparatus for improving cellular internet of things (CIoT) optimizations in a telecommunication network
Patent number
US12750754B2
Application number
17999539
Filed
May 21, 2021
Granted
Sep 29, 2026
Inventors
1
Claims
15

Classified under

H04W 36/32 Electricity & electronicsH04W 36/0022 Electricity & electronicsH04W 36/0079 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.