Access control method and apparatus and communication system

An access control apparatus, comprising:

• a memory that stores a plurality of instructions;
• and
• a processor coupled to the memory and configured to execute the instructions to:
• transmit configuration information used for configuring a mapping relationship between an access attempt and an access category to a user equipment (UE), wherein an access category to which an access attempt corresponds is determined by the UE based on the mapping relationship between an access attempt and an access category;
• receive a connection setup request message or a connection recovery request message transmitted by the UE;
• and
• determine whether the connection setup request message or the connection recovery request message of the UE is allowed,
• wherein the processor is further configured to:
• transmit configuration information used for configuring one or more timers used for access control to the UE;
• and
• a timer corresponds to an access category or an access category group or all access categories,
• the timer comprises an access-category-specific barring timer or an access-category-group-specific barring timer,
• the UE is further configured to start the access-category-specific barring timer or the access-category-group-specific barring timer when the access category defines or configures the access-category-specific barring timer or the access-category-group-specific barring timer and a result of the performing the access barring check based on the access category is that an access to which the access category corresponds is barred, and
• the UE is further configured to determine that the access attempt or the access to which the access category or the access category group corresponds is barred when the access-category-specific barring timer or access-category-group-specific barring timer is running.

A communication system, comprising:

• a user equipment (UE), configured to determine an access category to which an access attempt corresponds based on a mapping relationship between an access attempt and an access category;
• perform an access barring check based on the access category, to determine whether an access attempt to which the access category corresponds is barred;
• and transmit a connection setup request message or a connection recovery request message to a network device when the access attempt is considered as allowed;
• and
• a network device, configured to transmit configuration information used for configuring the mapping relationship between access attempt and access category to the UE;
• receive a connection setup request message or a connection recovery request message transmitted by the UE;
• and determine whether the connection setup request message or the connection recovery request message of the UE is allowed, and
• the network device is further configured to transmit configuration information used for configuring one or more timers used for access control to the UE;
• and
• a timer corresponds to an access category or an access category group or all access categories,
• the timer comprises an access-category-specific barring timer or an access-category-group-specific barring timer,
• the UE is further configured to start the access-category-specific barring timer or the access-category-group-specific barring timer when the access category defines or configures the access-category-specific barring timer or the access-category-group-specific barring timer and a result of the performing the access barring check based on the access category is that an access to which the access category corresponds is barred, and
• the UE is further configured to determine that the access attempt or the access to which the access category or the access category group corresponds is barred when the access-category-specific barring timer or access-category-group-specific barring timer is running.