Method and apparatus to reduce system overhead using reduced CID in Mobile Broadband Wireless Access System

A method of the present invention is configured to symbols in hours subcarriers are predetermined orthogonal on the frequency axis, and transmitting the burst allocation information from the base station in a broadband wireless communication system transmits a frame with the symbols, the base station the basic connection ID of the mobile terminals connected to a preset range when present in the (range), go to configure the access information including process and the reduction of identity that reduces the basic connection ID (basic CID) of the mobile terminal with the frame It characterized in that it comprises the step of transmitting to the terminal. IEEE 802.16, a mobile Internet, a reduced connection ID (Reduced CID), the access information elements (MAP_IE)