US 11,722,936 B2
Communication establishment
Ralf Keller, Würselen (DE); Christer Gustafsson, Huddinge (SE); and Åsa Larsen, Hisings Backa (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed on Mar. 21, 2022, as Appl. No. 17/699,776.
Application 17/699,776 is a continuation of application No. 16/761,866, granted, now 11,284,315, previously published as PCT/EP2018/076534, filed on Sep. 28, 2018.
Claims priority of provisional application 62/589,148, filed on Nov. 21, 2017.
Prior Publication US 2022/0232432 A1, Jul. 21, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 4/00 (2018.01); H04W 36/00 (2009.01); H04W 76/27 (2018.01); H04W 36/14 (2009.01); H04W 36/32 (2009.01); H04W 60/04 (2009.01)
CPC H04W 36/0066 (2013.01) [H04W 36/14 (2013.01); H04W 36/32 (2013.01); H04W 60/04 (2013.01); H04W 76/27 (2018.02)] 14 Claims
OG exemplary drawing
 
1. A method, performed by a wireless device, for communication establishment, the method comprising the wireless device:
receiving, at registration with a first mobility network node in a first network, an indicator of whether the first mobility network node supports a communication interface to a second mobility network node in a second network;
in response to a request for establishment of a communication with the wireless device using the first network, receiving an instruction to redirect to the second network; and
performing one of a tracking area update procedure or an attach procedure in the second network based on the indicator indicating whether the first mobility network node in the first network supports the communication interface to the second mobility network node in the second network.