Patent ID: 8897117

Claim:
A method for managing resources in an Orthogonal Frequency Division Multiple Access (OFDMA) cellular system, the method comprising: subchannelizing physical resource units constituting a system bandwidth into a plurality of subchannels according to a scheme defined in a first system communication mode, to support the first system communication mode and a second system communication mode, using Frequency Division Multiplexing (FDM) on an uplink; renumbering indexes of the plurality of subchannels in reverse order to be used for a Mobile Station (MS) operating in the second system communication mode; allocating at least one subchannel to a first MS operating in the first system communication mode based on indexes that start from a first subchannel of the plurality of subchannels; and allocating at least one subchannel to a second MS operating in the second system communication mode based on indexes that start from a last subchannel of the plurality of subchannels.