In and relating to disaster inbound roamers in a telecommunication network
The present disclosure relates to a communication method and system for converging a 5 th -Generation (5G) communication system for supporting higher data rates beyond a 4 th -Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. Disclosed is a method of operating a second telecommunication network to manage access of Disaster Inbound Roamers, DIR, from a first telecommunication network, to the second telecommunication network, comprising the step of: the second telecommunication network broadcasting a message indicating to User Equipments, UEs, of the first telecommunications network that they are able to roam on the second telecommunication network.
1. A method performed by a terminal in a wireless communication system, the method comprising:
identifying that the terminal loses coverage in a first public land mobile network (PLMN);
receiving, from a base station related to a second PLMN, a broadcast message indicating that the second PLMN is accessible for disaster inbound roamers;
based on the broadcast message, determining the second PLMN for a disaster roaming, wherein the second PLMN is one of PLMNs configured to be used in a disaster condition; and
initiating a registration procedure on the second PLMN,
wherein whether the second PLMN is allowed to access is determined based on a random number generated by the terminal and a unified access control (UAC) barring threshold value for an access for the disaster roaming received from the second base station.
2. The method of claim 1 , wherein the access for the disaster roaming corresponds to an access identity 3.
3. The method of claim 1 , wherein the registration procedure on the second PLMN is initiated after a waiting timer expires.
4. The method of claim 1 , wherein the initiating of the registration procedure on the second PLMN comprises transmitting, to the base station, a registration request message including a registration type which indicates that the registration procedure is for the disaster roaming.
5. A terminal in a wireless communication system, the terminal comprising:
a transceiver; and
a controller coupled with the transceiver and configured to:
identify that the terminal loses coverage in a first public land mobile network (PLMN),
receive, from a base station related to a second PLMN, a broadcast message indicating that the second PLMN is accessible for disaster inbound roamers,
based on the broadcast message, determine the second PLMN for a disaster roaming, wherein the second PLMN is one of PLMNs configured to be used in a disaster condition, and
initiating a registration procedure on the second PLMN,
wherein whether the second PLMN is allowed to access is determined based on a random number generated by the terminal and a unified access control (UAC) barring threshold value for an access for the disaster roaming received from the second base station.
6. The terminal of claim 5 , wherein the access for the disaster roaming corresponds to an access identity 3.
7. The terminal of claim 5 , wherein the registration procedure on the second PLMN is initiated after a waiting timer expires.
8. The terminal of claim 5 , wherein the controller is further configured to transmit, to the base station, a registration request message including a registration type which indicates that the registration procedure is for the disaster roaming.