Patent ID: 7974252

Claim:
A method of registering a terminal in an access point of a wireless communication system, the method comprising: receiving a first ranging request message from the terminal using an access interval of an uplink sub-frame of a frame of a plurality of frames, wherein the access interval is used to receive the first ranging request message from the terminal on a contention basis; sending a first ranging response message allocating a ranging slot to the terminal using a map message of a downlink sub-frame of a frame of the plurality of frames; receiving a second ranging request message from the terminal using the allocated ranging slot; sending a second ranging response message to the terminal in response to receiving the second ranging request message; after sending the second ranging response message, receiving a registration request message from the terminal using a second management connection interval of a frame of the plurality of frames; and sending information on whether to permit the registering to the terminal using a first management connection interval of a frame of the plurality of frames, wherein each frame of the plurality of frames comprises a downlink sub-frame and an uplink sub-frame, wherein the downlink sub-frame includes a broadcast interval and a first management connection interval, and the uplink sub-frame includes an access interval and a second management connection interval, the broadcast interval being used for transmitting a map message.