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. 29, 2017
Filed:
Mar. 31, 2014
Applicant:
Syniverse Communications, Inc., Tampa, FL (US);
Inventors:
David Xining Zhang, San Jose, CA (US);
Huiyue Xu, Beijing, CN;
Xiaohua Yuan, Beijing, CN;
Zhihai Zhang, Beijing, CN;
Assignee:
Syniverse Communications, Inc., Tampa, FL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04W 36/00 (2009.01); H04W 8/04 (2009.01); H04W 4/14 (2009.01);
U.S. Cl.
CPC ...
H04W 36/0022 (2013.01); H04W 4/14 (2013.01); H04W 8/04 (2013.01);
Abstract
An interworking solution only requires that Greenfield LTE deploy the IWF and IMS AS, and set up the connections between their MME and IWF for the IMSI attach procedure. The solution uses an IMS client that can be installed on the roamer's devices. Thus once the roamer is attached to the LTE network together with IMSI attach via IWF function, and registered into the IMS system, the roamer can receive voice call and SMS by the original phone number, even though the LTE operator network does not support CSFB.