The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 25, 2023
Filed:
May. 19, 2021
Microsoft Technology Licensing, Llc, Redmond, WA (US);
Fred Walter Rink, Fairview, TX (US);
Haibo Qian, Frisco, TX (US);
Michael Anthony Brown, McKinney, TX (US);
Microsoft Technology Licensing, LLC, Redmond, WA (US);
Abstract
A transition region can be defined for a first network segment that can provide wireless communication services using a first radio access technology (RAT) and a second RAT and that supports Internet protocol (IP) packet-based voice calls. The transition region can be defined based at least in part on a first coverage area of the first network segment and a second coverage area of a second network segment that does not support IP packet-based voice calls and does not support a first handoff mechanism based on the first RAT. A network node can be notified about an IP packet-based voice call involving a user equipment (UE) that is receiving service from the first network segment using a first RAT. Upon determining that the UE is located within the transition region, the network node can cause the UE to be switched to a second RAT for the IP packet-based voice call.