METHOD FOR EFFICIENTLY PROCESSING SIGNAL IN ISR ACTIVATED STATE IN NBIFOM

摘要

A disclosure of the present specification provides a method for efficiently processing a signal in an idle mode signaling reduction (ISR) activated state in network based IP flow mobility (NBIFOM). The method, which is a method for processing idle mode signaling reduction (ISR) by a terminal in a wireless communication system, may comprise the steps of: checking whether an ISR deactivation condition has been satisfied; and locally deactivating the ISR when the ISR deactivation condition has been satisfied, wherein the ISR deactivation condition includes a case in which both the terminal and a packet data network (PDN) gateway support network based IP flow mobility (NBIFOM), a case in which the terminal is attached to a WLAN by SCM or is located in the coverage of a WLAN, a case in which a PDN connection to the terminal is established and then the terminal departs from the existing tracking area (TA) or routing area (RA) and moves to another TA or another RA, and a case in which the terminal is currently in an ISR activated state.