US 12,464,484 B2
Indicating network types to use for SIP messages
Andrew Allen, Hallandale Beach, FL (US); Adrian Buckley, Tracy, CA (US); and Jan Hendrik Lucas Bakker, Fort Worth, TX (US)
Assigned to MALIKIE INNOVATIONS LIMITED, Dublin (IE)
Filed by MALIKIE INNOVATIONS LIMITED, Dublin (IE)
Filed on Oct. 25, 2022, as Appl. No. 18/049,496.
Application 18/049,496 is a continuation of application No. 15/880,789, filed on Jan. 26, 2018, granted, now 11,496,980, issued on Nov. 8, 2022.
Application 15/880,789 is a continuation of application No. 13/669,140, filed on Nov. 5, 2012, granted, now 9,913,235, issued on Mar. 6, 2018.
Application 13/669,140 is a continuation of application No. 12/423,637, filed on Apr. 14, 2009, granted, now 8,315,236, issued on Nov. 20, 2012.
Claims priority of provisional application 61/044,568, filed on Apr. 14, 2008.
Prior Publication US 2023/0126115 A1, Apr. 27, 2023
Int. Cl. H04L 65/1016 (2022.01); H04L 65/1104 (2022.01); H04M 7/12 (2006.01); H04W 8/24 (2009.01); H04W 60/00 (2009.01); H04W 76/10 (2018.01)
CPC H04W 60/00 (2013.01) [H04L 65/1104 (2022.05); H04M 7/123 (2013.01); H04M 7/1235 (2013.01); H04W 8/24 (2013.01); H04L 65/1016 (2013.01); H04W 76/10 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
establishing, by a user equipment (UE), a connection with a wireless network using a radio access technology;
receiving, by the UE, over a first transport, a first Session Initiation Protocol (SIP) message from the wireless network including a first request to establish a service with the wireless network using the first transport;
determining, by the UE, that the service cannot be established using the first transport based on memory-stored information including a policy associated with the radio access technology;
sending, by the UE, a second SIP message to the wireless network including an indication that the first request has been rejected, wherein the indication comprises a second transport;
in response to the second SIP message, receiving, by the UE, over the second transport, a third SIP message from the wireless network including a second request to establish the service with the wireless network using the second transport;
determining, by the UE, that a change of communication capabilities of the wireless network has occurred; and
in response to the determining, sending, by the UE, a fourth SIP message to the wireless network, wherein the fourth SIP message indicates a need to transfer the service.