Method for configuring and allocating forward channel in orthogonal frequency division multiple access frequency division duplex system

In a method for allocating forward channels to a mobile station located in a cell in an FDD (frequency division duplex) based mobile communication system, the method comprising:

• (a) finding location information and power information on the mobile station, and determining whether the mobile station is provided in a handoff region located in an inter-cell region adjacent to the mobile station;
• (b) allocating a service-possible subcarrier specific to the cell as a subcarrier usable by the mobile station when the mobile station is found to be provided in a handoff region in (a);
• and
• (c) allocating the service-possible subcarrier as a subcarrier usable by the mobile station by using information having different SIR (signal to interference ratio) values for the respective subcarriers to be allocated when the mobile station is found to be provided in a non-handoff region located in the inter-cell region adjacent to the mobile station in (a), wherein collisions generated in the inter-cell adjacent region are prevented.

In a method for respective base stations of a plurality of cells to configure forward channels transmitted to a mobile station in an FDD (frequency division duplex) based mobile communication system, a recording medium for storing a program for realizing functions comprising:

• (a) classifying the cells into a specific number of interference patterns based on location relations of the respective cells;
• (b) preventing the respective base stations of the cells having different classified patterns to sequentially transmit control information to the mobile station during different defined periods within a period of the forward channel, and the respective base stations of the cells having the same classified patterns to concurrently transmit control information to the mobile station exclusively during one of the defined periods;
• and
• (c) allowing the respective base stations to transmit traffic data to the mobile station irrespective of the classified patterns when the control information is transmitted in (b).

In a method for allocating forward channels to a mobile station located in a cell in an FDD (frequency division duplex) based mobile communication system, a recording medium for storing a program for realizing functions comprising:

• (a) finding location information and power information on the mobile station, and determining whether the mobile station is provided in a handoff region located in an inter-cell region adjacent to the mobile station;
• (b) allocating a service-possible subcarrier specific to the cell as a subcarrier usable by the mobile station when the mobile station is found to be provided in the handoff region in (a);
• and
• (c) allocating the service-possible subcarrier as a subcarrier usable by the mobile station by using information having different SIR (signal to interference ratio) values for the respective subcarriers to be allocated when the mobile station is found to be provided in a non-handoff region located in the inter-cell region adjacent to the mobile station in (a), wherein collisions generated in the inter-cell adjacent region are prevented.