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:
May. 28, 2019
Filed:
Oct. 06, 2017
Applicant:
T-mobile U.s.a., Inc., Bellevue, WA (US);
Inventors:
Mayank Kaul, Bellevue, WA (US);
Shujaur Rehman Mufti, Snoqualmie, WA (US);
Assignee:
T-Mobile USA, Inc., Bellevue, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M 11/04 (2006.01); H04L 5/00 (2006.01); H04M 7/00 (2006.01); H04W 4/90 (2018.01);
U.S. Cl.
CPC ...
H04L 5/0048 (2013.01); H04M 7/006 (2013.01); H04W 4/90 (2018.02);
Abstract
Systems and methods are described herein for handling E911 communications within IMS networks, such as Voice over LTE (VoLTE) networks. In some embodiments, the systems and methods, via various communication nodes, handle or otherwise govern emergency calls within the VoLTE network, by sending an INVITE message from a sender node of the VoLTE network to a recipient node of the VoLTE network, and starting a retry timer at the sender node that is specific to handling E911 calls by the VoLTE network.