Method and apparatus for transitioning between networks in a wireless communication system
The present disclosure may provide a method of operating a terminal operating based on a plurality of networks in a wireless communication system. Herein, the method of operating the terminal may include: establishing a connection to a first network; receiving a paging message from a second network; transmitting, to the first network, a message for indicating temporary suspension of data communication with the first network; and transitioning to the second network. Herein, the message for indicating the temporary suspension of data communication with the first network may include paging-related information of the first network, and when the terminal receives a paging message from the first network after transitioning to the second network, the terminal may determine whether or not to transition to the first network.
1. A method performed by a terminal based on a plurality of networks in a wireless communication system, the method comprising:
establishing a connection to a first network;
transmitting a message for requesting temporary suspension to the first network based on activity related to a second network, wherein the message indicates suspension of data communication with the first network and includes paging-related information of the first network;
transitioning to the second network; and
transitioning to the first network based on reception of a paging message from the first network and the paging-related information, in a state in which the terminal has transitioned to the second network,
wherein the paging-related information indicates for at least one packet data unit (PDU) session that paging is allowed.
2. The method of claim 1 , further comprising:
determining whether to transition to the first network based on the paging-related information of the first network in the message for indicating suspension of data communication with the first network.
3. The method of claim 1 , wherein the paging-related information indicates data that the paging is allowed, based on at least any one of a logical channel, a PDU session, a network slice, a data network name (DNN), and IP multimedia subsystem (IMS) service information.
4. The method of claim 3 , wherein the paging-related information further includes identifier information for the data that the paging is allowed.
5. The method of claim 1 , wherein the transitioning to the first network comprises:
receiving the paging message from the first network after transitioning to the second network; and
releasing the connection of the second network based on the paging message corresponding to the paging-related information of the first network.
6. The method of claim 1 , further comprising:
transitioning to the first network, after the terminal transitions to the second network, based on a lapse of a predetermined time or receiving a message indicating resumption of the data communication with the first network.
7. The method of claim 1 , wherein the terminal operates based on a plurality of subscriber identification modules (SIMs).
8. The method of claim 7 , wherein the first network corresponds to a first SIM, and the second network corresponds to a second SIM.
9. A terminal in a wireless communication system, the terminal comprising:
at least one transceiver;
at least one processor; and
at least one memory operably coupled with the at least one processor and configured to, by being executed, store instructions that make the at least one processor perform a specific operation,
wherein the specific operation is configured to:
establish a connection to a first network,
transmit a message to the first network based on activity related to a second network, wherein the message indicates suspension of data communication with the first network and includes paging-related information of the first network,
transition to the second network, and transition to the first network based on reception of a paging message from the first network and the paging-related information, in a state in which the terminal has transitioned to the second network,
wherein the paging-related information indicates for at least one packet data unit (PDU) session that paging is allowed.
10. A method performed by a network device in a wireless communication system, the method comprising:
establishing a connection to a terminal operating based on a plurality of networks;
receiving, from the terminal, a message for indicating suspension of data communication with the network, wherein the message includes paging-related information of the network;
suspending the connection to the terminal based on the connection release message message for indicating suspension of data communication with the network; and
transmitting a paging message to the terminal, based on receiving data corresponding to the paging-related information for the terminal during suspension of the connection to the terminal,
wherein the paging-related information indicates for at least one packet data unit (PDU) session that paging is allowed.