Method and terminal for controlling network traffic in wireless communication system

1. A method for controlling traffic of a user equipment (UE) supporting application specific congestion control for data communication (ACDC), the method comprising:

transmitting a first message including information of an installed application to a base station (BS);

receiving a second message including information of a barring parameter for the application;

determining whether to bar a transmission of data generated from the application based on the barring parameter for the application in the course of operation in a radio resource control (RRC) connected mode; and

selectively transmitting the data, and performing a buffer status report (BSR), to the BS based on the determined result,

wherein the BSR is performed, excluding a quantity of barred data in a data quantity calculation process for the BSR, based on the determined result.

2. The method of claim 1 , wherein the transmission of the data is barred at one of an application level, an ACDC category level, a packet data convergence protocol (PDCP) entity level, a logical channel level, and a radio link control (RLC) level.

3. The method of claim 1 , wherein the first message includes information corresponding to at least one of an ID of the installed application, a name of the installed application, a traffic transmission period of the installed application, an average packet size of the installed application, a protocol used for a data transmission of the installed application, and a presence or non-presence of an emergency relation of the application.

4. The method of claim 1 , wherein the barring parameter includes at least one of a barring factor for determining a barring rate of the application and a barring time for determining a time interval for barring the application.

5. The method of claim 4 , wherein the step of determining whether to bar the transmission comprises determining whether to bar the transmission of the data according to a result from performing a probability test based on the barring factor.

6. The method of claim 1 , wherein the step of determining whether to bar the transmission is performed only when an ongoing barring does not exist, and

wherein when the ongoing barring exists, the data is not transmitted to the BS.

7. The method of claim 1 , wherein when the second message indicates to utilize an ACDC parameter in RRC idle mode, instead of the information of the barring parameter, the step of determining whether to bar the transmission is performed based on the ACDC parameter in the RRC idle mode.

8. The method of claim 1 , wherein the second message further includes information on an ACDC category associated with the application.

9. The method of claim 1 , wherein each of the first message and the second message comprises an RRC message or a non-access stratum (NAS) message.

10. A user equipment (UE) supporting application specific congestion control for data communication (ACDC), the UE comprising:

a transmitter;

a receiver; and

a processor, operably coupled to the transmitter and the receiver, wherein the processor is configured to:

control the transmitter to transmit a first message including information of an installed application to a base station (BS);

control the receiver to receive a second message including information of a barring parameter for the application;

determine whether to bar a transmission of data generated from the application based on the barring parameter for the application in the course of operation in a radio resource control (RRC) connected mode; and

control the transmitter to selectively transmit the data, and perform a buffer status report (BSR), to the BS based on the determined result,

wherein the BSR is performed, excluding a quantity of barred data in a data quantity calculation process for the BSR, based on the determined result.

11. The UE of claim 10 , wherein the transmission of the data is barred at one of an application level, an ACDC category level, a packet data convergence protocol (PDCP) entity level, a logical channel level, and a radio link control (RLC) level.

12. The UE of claim 10 , wherein the first message includes information corresponding to at least one of an ID of the installed application, a name of the installed application, a traffic transmission period of the installed application, an average packet size of the installed application, a protocol used for a data transmission of the installed application, and a presence or non-presence of an emergency relation of the application.

13. The UE of claim 10 , wherein the barring parameter includes at least one of a barring factor for determining a barring rate of the application and a barring time for determining a time interval for barring the application.

14. The UE of claim 13 , wherein the processor is further configured to determine whether to bar the transmission of the data according to a result from performing a probability test based on the barring factor.

15. The UE of claim 10 , wherein the processor is further configured to determine whether to bar the transmission only when an ongoing barring does not exist, and

wherein when the ongoing barring exists, the data is not transmitted to the BS.

16. The UE of claim 10 , wherein when the second message indicates to utilize an ACDC parameter in RRC idle mode, instead of the information of the barring parameter, the processor is further configured to determine whether to bar the transmission based on the ACDC parameter in the RRC idle mode.

17. The UE of claim 10 , wherein the second message further includes information on an ACDC category associated with the application.

18. The UE of claim 10 , wherein each of the first message and the second message comprises an RRC message or a non-access stratum (NAS) message.