Patent ID: 8055268
Filing Date: 2011-11-08
Classification: H04W

Abstract:
1. A method of allocating uplink resources to a subscriber station by using bandwidth request ranging in a mobile communication system, comprising: transmitting an uplink channel descriptor (UCD) including code group information to the subscriber station, wherein the code group information is obtained by dividing a range of bandwidth request codes into a plurality of code groups, each code group having at least two bandwidth request codes, and mapping the code groups to predetermined data block sizes; receiving a bandwidth request code selected in the subscriber station, wherein the selected bandwidth request code is one of the at least two bandwidth request codes included in a code group that is selected by the subscriber station among the plurality of code groups; determining a code group including the selected bandwidth request code among the plurality of code groups; and allocating to the subscriber station a bandwidth through which a data block size corresponding to the determined code group can be transmitted, wherein the determining of the code group including the selected bandwidth request code comprises, when the code group including the selected bandwidth request code is determined to be a first code group that is mapped to a data block size less than or equal to a first reference value: wherein the determining of the code group including the selected bandwidth request code comprises, when the code group including the selected bandwidth request code is determined to be a second code group that is mapped to a data block size greater than the first reference value and less than or equal to a second reference value: wherein the determining of the code group including the selected bandwidth request code comprises, when the code group including the selected bandwidth request code is determined to be a third code group that is mapped to a data block size greater than or equal to the second reference value: