Patent ID: 7564829

Claim:
A method of allocating a radio resource in a wireless communication system utilizing orthogonal frequency division multiplexing, the method comprising: receiving data associated with a radio resource allocation map from a base station, wherein the radio allocation map comprises control parameters for transmitting uplink data to the base station, wherein at least one of the control parameters comprises an orthogonal pilot pattern indicator for using orthogonal pilot patterns associated with supporting dual transmission by at least one mobile station, the orthogonal pilot patterns comprising a minus pilot and a plus pilot being used for an uplink basic allocation unit; and transmitting uplink data to the base station by the mobile station using the orthogonal pilot patterns, wherein the uplink data in the uplink basic allocation unit are at least one of: a first tile comprising the plus pilot located at a lower left corner of the tile, the minus pilot located at an upper right corner of the tile, and a null subcarrier located at an upper left corner of the tile and a lower right corner of the tile; and a second tile comprising the minus pilot located at an upper left corner of the tile, the plus pilot located at a lower right corner of the tile, and a null subcarrier located at a lower left corner of the tile and an upper right corner of the tile.