Method and device for controlling multipriority in wireless communication system

摘要

The present invention relates to a wireless communication system and, more specifically, to a method and a device for controlling a backoff timer on the basis of multipriority in a wireless communication system. The method for controlling a backoff timer in a terminal in which multipriority is set, according to one embodiment of the present invention, comprises the steps of: transmitting, to a network node, a non access stratum (NAS) request message which is set to a first priority level and does not have an access point name (APN); receiving a reject message for the NAS request message from the network node; and starting a session management (SM) backoff timer on the basis of the rejection message, wherein while the SM backoff timer is operated, the terminal is permitted to transmit a new NAS request message which is not set to the first priority level.

主权项

1. A method of controlling a backoff timer at a user equipment (UE) configured for multipriority, the method comprising:
transmitting a first non access stratum (NAS) request message without an access point name (APN), which is set to a first priority level, to a network node, wherein the first NAS request message without the APN is an attach request message transmitted along with a packet data network (PDN) connectivity request without an APN; receiving a reject message for the first NAS request message from the network node; initiating a session management (SM) backoff timer based on the reject message; and transmitting a second NAS request message, which is not set to the first priority level, while the SM backoff timer is running.