Packet data unit (PDU) session control method and apparatus

1. A mobile terminal, comprising:

a memory;

a communication module; and

a processor configured to:

receive information of a network status through the communication module,

install an application in response to a user request,

execute the installed application if an application type of the installed application is an always-on application always running in a background,

establish a packet data unit (PDU) session, when the received information of the network status allows a PDU session establishment corresponding to the installed application,

update, periodically or selectively, application information including the application type of the installed application while the installed application is not executed, if the application type of the installed application is not the always-on application, and

change the application type of the installed application to the always-on application based on the updated application information.

2. The mobile terminal of claim 1 , wherein the processor is further configured to release the PDU session based on whether an allowed network slice selection assistance information (NSSAI) included in the information of the network status is changed.

3. The mobile terminal of claim 1 , wherein the processor is further configured to, in response to a request for terminating execution of an application for which a PDU session is established from a user, release the PDU session corresponding to the application and terminate the execution of the application.

4. The mobile terminal of claim 1 , wherein the processor is further configured to:

release a PDU session corresponding to an executing application when an allowed network slice selection assistance information (NSSAI) included in the information of the network status is changed, and

terminate execution of the executing application.

5. The mobile terminal of claim 1 , wherein the processor is further configured to change the PDU session corresponding to an executing application based on the information of the network status being changed according to a location of the mobile terminal.

6. The mobile terminal of claim 1 , wherein the processor is further configured to generate an application list based on the information of the network status and notify, a user of a presence of an installable application based on the application list including the installable application, and

wherein the information of the network status includes at least one of information indicating whether an allowed network slice selection assistance information (NSSAI) is changed, information indicating whether local area data network (LADN) is supported, information indicating whether multi-access edge computing (MEC) is supported, or information indicating whether user equipment (UE) route selection policy (URSP) is changed.

7. The mobile terminal of claim 6 , wherein the processor is further configured to install the installable application based on settings of the mobile terminal or a user input.

8. The mobile terminal of claim 1 , wherein the processor is further configured to:

generate an application list based on the information of the network status being changed according to a location of the mobile terminal, and

notify a user of a presence of an executable application based on the application list including the executable application.

9. The mobile terminal of claim 8 , wherein the processor is further configured to execute the executable application based on a settings of the mobile terminal or a user input.

10. The mobile terminal of claim 1 , wherein the processor is further configured to collect a use history of an application and release a PDU session corresponding to a running application based on the use history.

11. The mobile terminal of claim 10 , wherein the processor is further configured to control to configure a priority based on the use history and release the PDU session corresponding to the running application based on the information of the network status being changed according to a location of the mobile terminal and the priority.

12. The mobile terminal of claim 10 , wherein the processor is further configured to change an application execution condition based on the use history and establish a PDU session corresponding to the application based on the changed application execution condition.

13. The mobile terminal of claim 1 , wherein the information of the network status further includes information indicating whether a user equipment route selection policy (URSP) is changed, and

wherein the processor is further configured to release the established MU session when the URSP is changed.

14. A method of a mobile terminal, the method comprising:

receiving information of a network status through a communication module of the mobile terminal;

installing an application in response to a user request;

executing the installed application if an application type of the installed application is an always-on application always running in a background;

establishing a packet data unit (PDU) session, when the received information of the network status allows a PDU session establishment corresponding to the installed application;

updating, periodically or selectively, application information including the application type of the installed application while the installed application is not executed, if the application type of the installed application is not the always-on application; and

changing the application type of the installed application to the always-on application based on the updated application information.

15. The method of claim 14 , further comprising:

releasing the PDU session corresponding to the installed application based on whether an allowed network slice selection assistance information (NSSAI) included in the information of the network status is changed; and

terminating the installed application.

16. The method of claim 14 , further comprising:

generating an application list based on the information of the network status; and

executing, if an executable application exists in the application list, the executable application, based on a setting of the mobile terminal or a user input,

wherein the information on network status includes at least one of information indicating whether an allowed network slice selection assistance information (NSSAI) is changed, information indicating whether local area data network (LADN) is supported, information indicating whether multi-access edge computing (MEC) is supported, or information indicating whether user equipment (UE) route selection policy (URSP) is changed.

17. The method of claim 14 , further comprising:

collecting a use history of an application; and

releasing a PDU session corresponding to a running application based on the use history.