Patent ID: 8335185

Claim:
A method of allocating a resource to mobile stations to support a real time service, the method comprising: grouping one or more mobile stations; allocating a group resource area for transmitting bandwidth request information for transmitting real time service data of the grouped one or more mobile stations; allocating respective individual resource areas to the one or more mobile stations included in the group resource area; and transmitting messages including information about the group resource area and information about the individual resource areas respectively allocated to the one or more mobile stations, wherein the information about the individual resource areas includes a type of a reduced connection identifier, the reduced connection identifier, a number of the reduced connection identifier and a duration, wherein the reduced connection identifier has a bit size that varies according to the type of the reduced connection identifier, and wherein the information about the group resource area includes symbol offset information, a number of symbols information, subchannel offset information and a number of subchannels information.