Terminal requesting network slice capabilities from non-3gpp access network

A method, comprising:

• receiving a first message, via a first access network, by a node in a second access network, wherein the first message indicates that a wireless transmit/receive unit (WTRU) requests information about a network slicing capability of the second access network;
• sending a second message, via the first access network, by the node in the second access network, wherein the second message indicates the network slicing capability of the second access network;
• and
• receiving a third message to register the WTRU with the second access network based upon the network slicing capability of the second access network.

A node in a second access network, comprising:

• a memory;
• and
• at least one processor to execute instructions from the memory, wherein the at least one processor is configured to:
• receive a first message, via a first access network, by the node in the second access network, wherein the first message indicates a wireless transmit/receive unit (WTRU) in the first access network requests information about a network slicing capability of the second access network;
• send a second message, via the first access network, by the node in the second access network, wherein the second message indicates the network slicing capability of the second access network;
• and
• receive a third message to register with the second access network based upon the network slicing capability of the second access network.