Method and apparatus for operating of network and user equipment supporting mobility of user equipment in wireless communication system

A base station comprising:

• at least one antenna to transmit and receive one or more wireless signals;
• at least one processor;
• and
• memory storing instructions that, when executed by the at least one processor, cause the base station to:
• transmit, to a wireless user device:
• radio access network-based notification area (RNA) information;
• and
• an access barring threshold value, wherein the access barring threshold value is associated with a determination that an RNA update indication is allowed;
• after transmitting the RNA information, receive, from the wireless user device that is in a radio resource control (RRC) inactive mode, an RNA update indication message, wherein the RNA update indication message is based on:
• the RNA information;
• and
• the access barring threshold value;
• based on the RNA update indication message, determine whether to maintain the RRC inactive mode for the wireless user device;
• and
• perform, by the base station:
• based on a determination to maintain the RRC inactive mode for the wireless user device, transmission, to a node, a request for forwarding context information of the wireless user device;
• or
• based on a determination to not maintain the RRC inactive mode for the wireless user device, transmission, to the wireless user device, an RNA update reject message.