Access control method and device

A method of a user equipment (UE) for performing unified access control, the method comprising:

• receiving system information including information for access control from a base station;
• when access attempt is triggered, instructing (or providing) access category information from an non-access stratum (NAS) layer of the UE to an access stratum (AS) layer;
• checking whether access barring information for access category is included in the system information;
• and
• checking access barring index information associated to the access category, and controlling access barring check operation in the AS layer using the access barring parameter corresponding to the access barring index information.

A method of a base station for performing unified access control, the method comprising:

• generating information for access control including access barring index information associated with an access category and access barring parameter information for each access barring index;
• including the information for access control in system information and then transmitting the system information including the information for access control to a user equipment (UE);
• and
• receiving access request information by the UE determined based on the system information.

A user equipment (UE) performing unified access control, the UE comprising:

• a receiver configured to receive system information including information for access control from a base station;
• and
• a controller configured to, when access attempt is triggered, control access category information to be instructed from an non-access stratum (NAS) layer of the UE to an access stratum (AS) layer,
• check whether access barring (parameter) information for the access category is included in the system information, and
• check access barring index information associated to the access category, and control access barring check operation in the AS layer using the access barring parameter corresponding to the access barring index information.