| CPC H04W 8/20 (2013.01) [H04W 4/06 (2013.01); H04W 60/04 (2013.01)] | 12 Claims |

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1. A method by an access and mobility management function (AMF) in a wireless network, the method comprising:
receiving, from a user equipment (UE), a registration request message;
receiving, from a unified data management (UDM), subscription data for the UE; and
in case that the registration request message does not include an establishment cause, transmitting, to the UE, at least one of a multimedia priority service (MPS) subscription indication or a mission critical service (MCX) subscription indication via a UE configuration update (UCU) procedure,
wherein the subscription data includes at least one of the MPS subscription indication or the MCX subscription indication.
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