Method and device for supporting public safety net access in wireless communication system

A method performed by a base station for supporting a public safety network access of a terminal in a wireless communication system, the method comprising:

• transmitting, to a terminal during a random access procedure, information indicating that the base station supports a public safety network service;
• receiving, from the terminal, a message including terminal capability information indicating that the terminal supports a public safety network service, in case that execution of an application associated with the public safety network service is detected based on category information included in a packet of the application and the terminal is configured to notify that the terminal supports the public safety network service;
• determining whether a serving frequency band of the terminal and a frequency band that supports the public safety network service are different;
• determining, based on the message, to perform a hand over the terminal to a frequency band that supports the public safety network service in case that the terminal support the public safety network service and the serving frequency band of the terminal and the frequency band that supports the public safety network service are different;
• and
• transmitting, to the terminal, a handover command to hand over the terminal to the frequency band that supports the public safety network service, based on the determination.

A terminal for accessing a public safety network in a wireless communication system, the terminal comprising:

• a transceiver configured to transmit and receive a signal to and from a base station;
• and
• a controller configured to:
• control the transceiver to receive, from a base station during a random access procedure, information indicating that the base station supports a public safety network service, to determine whether execution of an application associated with the public safety network service is detected based on category information included in a packet of the application, to identify whether the terminal is configured to notify that the terminal supports the public safety network service, in case that the execution of the application associated with the public safety network service is detected, to control the transceiver to transmit, to the base station, a message including terminal capability information indicating that the terminal supports the public safety network service, in case that the terminal is configured to notify that the terminal supports the public safety network service, and receive, from the base station, a handover command message, in case that the terminal support the public safety network service and a serving frequency band of the terminal and a frequency band that supports the public safety network service are different, and to perform a handover, in case that the handover command message is received, to a frequency band that supports the public safety network service.

A base station for supporting a public safety network access of a terminal in a wireless communication system, the base station comprising:

• a transceiver configured to transmit and receive a signal to and from the terminal;
• and
• a controller configured to control the transceiver to transmit, to a terminal during a random access procedure, information indicating that the base station supports a public safety network service, and receive, from the terminal, a message including terminal capability information indicating that the terminal supports a public safety network service, in case that execution of an application associated with the public safety network service is detected based on category information included in a packet of the application and the terminal is configured to notify that the terminal supports the public safety network service, to determine whether a serving frequency band of the terminal and a frequency band that supports the public safety network service are different, to determine, based on the message, to perform a hand over the terminal to a frequency band that supports the public safety network service in case that the terminal support the public safety network service and the serving frequency band of the terminal and the frequency band that supports the public safety network service are different, and to control the transceiver to transmit, to the terminal, a handover command to hand over the terminal to the frequency band that supports the public safety network service, based on the determination.