Abstract: A terminal includes: a frame management unit to manage medium access control (MAC) frame information; an access time management unit to record time according to the terminal communicating with a wireless access point (AP); a conversion performing unit to modify the frame information based on the time; and a management storage unit to store the modified frame information. A method for providing security includes: at a mobile terminal, delivering mobile frame information to and requesting AP frame information from a wireless AP; at the wireless AP, delivering the AP frame information to and requesting modified mobile frame information from the mobile terminal; at the mobile terminal, delivering the modified mobile frame information to and requesting the modified AP frame information from the wireless AP; and at the wireless AP, delivering the modified AP information. A wireless AP manages modified MAC frame information.

Abstract: A terminal includes: a frame management unit to manage medium access control (MAC) frame information; an access time management unit to record time according to the terminal communicating with a wireless access point (AP); a conversion performing unit to modify the frame information based on the time; and a management storage unit to store the modified frame information. A method for providing security includes: at a mobile terminal, delivering mobile frame information to and requesting AP frame information from a wireless AP; at the wireless AP, delivering the AP frame information to and requesting modified mobile frame information from the mobile terminal; at the mobile terminal, delivering the modified mobile frame information to and requesting the modified AP frame information from the wireless AP; and at the wireless AP, delivering the modified AP information. A wireless AP manages modified MAC frame information.

Abstract: In an apparatus and method for sharing schedule information between mobile terminals, a sending mobile terminal transmits schedule information input by a user to a receiving mobile terminal. A schedule management server monitors a position of the sending mobile terminal according to the schedule information. If the current position of the sending mobile terminal is different from position information included in the schedule information, schedule change information is transmitted to the receiving mobile terminal, which outputs the schedule information.