Systems, methods, and instrumentalities are disclosed for an access control and mobility management function (AMF) node, comprising a processor configured to receive a N2 session management (SM) information from a session management function (SMF) node, wherein the N2 SM information indicates an available area for N2 information, receive a service request from a wireless transmit receive unit (WTRU), determine whether to update the N2 SM information based on a location of the WTRU and the available area for N2 information, wherein if the WTRU is outside of the available area for N2 information, the processor is configured to request a second N2 SM information from the SMF node and update the N2 SM information with the second N2 SM information, and send an N2 request with the N2 SM information to an access network associated with the WTRU. The available area for N2 information may be one or more of a user plane function (UPF) node serving area, a WTRU tracking area, or a radio access network (RAN) cell coverage area.