Method and apparatus for allocating a hybrid automatic repeat request channel identifier in a wireless access system

A method for allocating a hybrid automatic repeat request (HARQ) channel identifier (ACID) in a wireless access system, the method comprising:

• mapping an initial ACID value for each service flow;
• transmitting a first message including control information indicating an initial ACID value mapped to a specific service flow to a terminal via a dynamic service procedure with respect to the terminal;
• transmitting a second message indicating persistent resource allocation to the terminal, wherein the second message includes information regarding an initial ACID value and the number of the ACIDs used in the persistent resource allocation;
• and
• receiving from the terminal a packet corresponding to the specific service flow through a persistent resource allocation area included in the second message.

A terminal for allocating a hybrid automatic repeat request (HARQ) channel identifier (ACID) in a wireless access system, the terminal comprising:

• a radio frequency (RF) unit for transmitting and receiving a radio signal with respect to an external device;
• and
• a controller coupled to the RF unit,
• wherein the controller controls the RF unit to receive a first message including control information indicating an initial ACID value mapped to a specific service flow from a base station via a dynamic service procedure with respect to the base station, and controls the RF unit to receive a second message indicating persistent resource allocation from the base station, wherein the second message includes information regarding an initial ACID value and the number of the ACIDs used in the persistent resource allocation, and
• wherein the controller compares the initial ACID value included in the second message with the control information included in the first message, and allocates the ACID values used in the persistent resource allocation to the specific service flow when a result of the comparison shows that the control information included in the first message is the same as the initial ACID value included in the second message.