Patent ID: 7848513

Claim:
A method for a second Access Point (AP) to transmit a handover security context when an Access Terminal (AT) is moved from a service cell of a first AP connected to a Packet Access Router (PAR) to a service cell of the second AP connected to the PAR, thehandover security context transmitting method of the second AP comprising: receiving an information instruction message including security context at the second AP from the PAR; confirming, at the second AP, whether the information instruction message has Pairwise Master Key (PMK) information of the AT therein; generating a first authentication key from the PMK information of the information instruction message at the second AP, when the information instruction message has the PMK information of the AT therein; generating, at the second AP, a Key Encryption Key (KEK) using the first authentication key; and generating a Message Authentication Code (MAC) using the first authentication key and transmitting a ranging response message from the second AP to the AT when the information instruction message has the PMK information of the AT therein.