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:
Aug. 04, 2026
Filed:
Oct. 10, 2023
T-mobile Usa, Inc., Bellevue, WA (US);
Nassereddine Sabeur, Bellevue, WA (US);
Joel Arends, Renton, WA (US);
Marc A. Proctor, Shanwee, KS (US);
T-Mobile USA, Inc., Bellevue, WA (US);
Abstract
System and methods for using a visitor subscriber service (VSS) to provide short messaging services (SMS) on an advanced network for inbound roamers are described. The VSS acts as proxy for registration services and uses profile information of a roaming UE to either route a mobile terminated SMS message for the UE to an IMS if the UE supports SMS over IMS, or, to a mobile call operator (MCO) using SMS over SGS if the UE does not support SMS over IMS. The VSS interfaces with a home location register (HLR) of a HPLMN of the UE to provide a visitor location register (VLR) address of the VSS. The VLR address is used by an SMSC of the HPLMN to route the SMS message to the VSS. The MCO interfaces with a mobility management entity (MME) to which the UE attaches during a registration operation.