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:
Mar. 31, 2020
Filed:
Mar. 17, 2017
Applicant:
T-mobile Usa, Inc., Bellevue, WA (US);
Inventors:
Dawn Donnenwirth, Bellevue, WA (US);
Le Roy Munar, Snoqualmie, WA (US);
Ting Zhang, Bellevue, WA (US);
Baquer Ali Chabuk Savar, Bellevue, WA (US);
Muhammad Tawhidur Rahman, Bellevue, WA (US);
Assignee:
T-Mobile USA, Inc., Bellevue, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M 3/22 (2006.01); H04M 15/00 (2006.01); H04L 29/06 (2006.01); H04W 4/24 (2018.01); H04M 7/00 (2006.01);
U.S. Cl.
CPC ...
H04M 3/2218 (2013.01); H04L 65/1006 (2013.01); H04M 7/0084 (2013.01); H04M 15/41 (2013.01); H04M 15/57 (2013.01); H04M 15/60 (2013.01); H04M 15/63 (2013.01); H04M 15/8083 (2013.01); H04W 4/24 (2013.01); H04M 2215/0164 (2013.01); H04M 2215/0188 (2013.01);
Abstract
Systems and methods are described herein for determining dropped call rates (DCR) for various communications networks, such as IP Multimedia Networks (IMS), which include Voice over LTE (VoLTE) networks. For example, the systems and methods utilize data (e.g. abnormal cause codes) generated by layers of the IMS networks, such as a Session Initiation Protocol (SIP) layer of the IMS network, when determining dropped call rates for IMS networks.