Method of allocating resource area in wireless access system

A method of allocating a radio resource in a wireless access system, the method comprising:

• receiving a control message associated with radio resource allocation for receiving downlink data from the base station, wherein the control message comprises a first persistent downlink allocation information element comprising first resource allocation information associated with a first resource allocation region for receiving the downlink data from the base station;
• and
• transmitting an acknowledgment (ACK) message from the mobile station to the base station in response to successfully receiving the first persistent downlink allocation information element.

The method of claim 16, further comprising:

• receiving the downlink data from the base station via the assigned first resource allocation region.

A method of allocating a radio resource in a wireless access system, the method comprising:

• transmitting a control message associated with radio resource allocation for communicating data to a mobile station, wherein the control message comprises a first persistent allocation information element comprising first resource allocation information associated with a first resource allocation region for communicating the data;
• and
• receiving an acknowledgment (ACK) message from the mobile station in response to successfully receiving the first persistent allocation information element.