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. 29, 2025
Filed:
Mar. 21, 2022
T-mobile Usa, Inc., Bellevue, WA (US);
Muhammad Tawhidur Rahman, Bellevue, WA (US);
Chun Keet Foong, Whitesboro, TX (US);
T-Mobile USA, Inc., Bellevue, WA (US);
Abstract
Techniques for setting up a communication session associated with Evolved Packet System Fallback (EPSFB) are described herein. A fifth generation telecommunications network can implement a server to determine that a user equipment (UE) is incapable of establishing a Voice over New Radio (VoNR) call due to a chipset or other technology used by the UE. The server can send a message (e.g., a SIP380 Alternative Service message) to the UE to cause the UE to begin fallback to another network without waiting for an instruction from a base station in a standardized call flow. The server can establish the communication session for the UE using fewer call flow steps than a number of steps used by a standardized call flow.