Method and apparatus for constructing map ie using reduced cid in broadband ofdma systems

A method for reducing a size of burst allocation information by a mobile subscriber station in a broadband wireless communication system, the method comprising:

• receiving configuration information including a type field representing a type of a reduced connection identifier (CID) from a base station;
• and
• selectively applying the reduced CID based on the type field,
• wherein the type of the reduced CID is determined by the base station based on a range of a basic CID of the mobile subscriber station connected to the base station,
• wherein the type field includes at least two bits representing one of use of the basic CID and available types of the reduced CID,
• wherein the available types represent available lengths of the reduced CID, and
• wherein the reduced CID includes n Least Significant Bits (LSBs) of the basic CID, n being a positive integer indicated by the type field.