US 9,813,961 B1
Data communication system redirection of a media session to user equipment
Jasinder Pal Singh, Olathe, KS (US); Siddharth Oroskar, Overland Park, KS (US); Nitesh Manchanda, Overland Park, KS (US); and Rajil Malhotra, Olathe, KS (US)
Assigned to Sprint Communications Company L.P., Overland Park, KS (US)
Filed by Sprint Communications Company L.P., Overland Park, KS (US)
Filed on Feb. 3, 2016, as Appl. No. 15/14,463.
Int. Cl. H04W 36/14 (2009.01); H04L 29/06 (2006.01); H04W 36/00 (2009.01); H04W 80/04 (2009.01)
CPC H04W 36/14 (2013.01) [H04L 65/1006 (2013.01); H04W 36/0055 (2013.01); H04W 80/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of operating a data communication network to redirect a media session to User Equipment (UE), the method comprising:
an Internet Multimedia Subsystem (IMS) identifying a Long Term Evolution (LTE) network serving the UE;
the IMS receiving a Session Initiation Protocol (SIP) Invite message for the media session to the UE and responsively transferring a status request for delivery to the LTE network serving the UE;
responsive to the status request, the LTE network identifying a status of an LTE base station serving the UE and identifying an alternative communication network serving the UE;
responsive to the status request, the LTE network determining that the media session should be redirected to the alternative communication network based on the status of the LTE base station and the identified alternative communication network serving the UE;
the LTE network transferring a status response for delivery to the IMS indicating media session redirection to the alternative communication network; and
the IMS transferring the SIP Invite message for the media session to the UE for delivery to the alternative communication network serving the UE.