Network slicing operation

A method implemented by a network control node for connecting a wireless transmit/receive unit (WTRU) to a network slice, the method comprising:

• the network control node receiving service information associated with a service being requested by the WTRU;
• the network control node determining, based on subscription information for the WTRU and the received service information, slice information associated with the network slice, wherein the slice information comprises an identifier of the network slice or a service class served by the network slice;
• and
• the network control node determining whether the network control node or another network control node is to service the WTRU for accessing the network slice, wherein:
• on a condition that the network control node determines that the network control node is to service the WTRU for accessing the network slice, the network control node providing the slice information associated with the network slice to the WTRU, and
• on a condition that the network control node determines that another network control node is to service the WTRU for accessing the network slice, the network control node sending a request to a second network control node or a third network control node, wherein, if the request is sent to the second network control node, the request indicates that the second network control node is to service the WTRU for accessing the network slice, and wherein, if the request is sent to the third network control node, the request includes information for the third network control node to select the another network control node to service the WTRU for accessing the network slice.