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, 2020
Filed:
Jun. 03, 2010
Johanna Lisa Dwyer, Ottawa, CN;
Richard Charles Burbidge, Slough, GB;
Stefano Faccin, Hayward, CA (US);
Chen Ho Chin, Deerlijk, BE;
Johanna Lisa Dwyer, Ottawa, CN;
Richard Charles Burbidge, Slough, GB;
Stefano Faccin, Hayward, CA (US);
Chen Ho Chin, Deerlijk, BE;
3G Licensing S.A., Grand Duchy of Luxembourg, LU;
Abstract
Methods and apparatus to manage voice service in evolved packet systems are disclosed. An example method in a User Equipment (UE) with a first indicator related to voice services in an Evolved Packet System (EPS) comprises receiving a Non Access Stratum (NAS) protocol response message with a second indicator and responsive to at least one of the first indicator or the second indicator, determining availability of voice services over IP Multimedia Subsystem (IMS) in at least one of long term evolution (LTE) or global system for mobile communications edge radio access network (GERAN)/universal mobile telecommunications system terrestrial radio access network (UTRAN).