US 12,192,753 B2
Method, computer readable medium and apparatus to determine support of IMS voice service in a 5G mobile network
Robert Zaus, Munich (DE); Roland Gruber, Munich (DE); and Alexandre Saso Stojanovski, Paris (FR)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/439,691
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed Mar. 6, 2020, PCT No. PCT/US2020/022988
§ 371(c)(1), (2) Date Sep. 15, 2021,
PCT Pub. No. WO2020/190875, PCT Pub. Date Sep. 24, 2020.
Claims priority of provisional application 62/819,284, filed on Mar. 15, 2019.
Prior Publication US 2022/0167244 A1, May 26, 2022
Int. Cl. H04L 65/1016 (2022.01); H04W 60/04 (2009.01); H04W 36/08 (2009.01); H04W 84/04 (2009.01)
CPC H04L 65/1016 (2013.01) [H04W 60/04 (2013.01); H04W 36/08 (2013.01); H04W 84/042 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of operating a user equipment (UE) in a wireless network, comprising:
generating, by the UE, an initial registration request message that includes fifth generation mobility management (5GMM) capabilities of the UE that are indicative of whether the UE supports voice over internet protocol multimedia subsystem (IMS);
transmitting, by the UE, the initial registration request message using Non-Access Stratum (NAS) signaling to a radio access network (RAN) node in the wireless network; and
receiving, by the UE, a registration accept message that includes an indication of whether voice over IMS is approved, wherein the indication is based on a comparison of the 5GMM capabilities of the UE and capabilities of the RAN node.