Mobility management for next generation mobile network

A wireless transmit/receive unit (WTRU) comprising circuitry, including a transmitter, a receiver and a processor, configured to:

• receive a plurality of network policies from a network, wherein a first policy of the plurality of network policies maps an application of the WTRU to a network slice and a second policy of the plurality of network policies indicates at least one mobility-related criteria for the application, the at least one mobility-related criteria comprising an indication of whether an Internet Protocol (IP) address can be changed during a session for the application;
• determine that a current connection between the WTRU and a data network does not support one or more of (i) the network slice indicated by the first policy or (ii) the at least one mobility-related criteria indicated by the second policy;
• send a request to a network node via a wireless interface, wherein the request indicates the at least one mobility-related criteria indicated by the second policy;
• and
• receive, via the wireless interface, a response indicating that the current connection has been modified such that the WTRU can communicate data associated with the application of the WTRU using the network slice indicated by the first policy and in accordance with the at least one mobility-related criteria indicated by the second policy.