Method of allocating subcarriers in orthogonal frequency division multiplexing (OFDM) cellular system

A method of allocating a plurality of subcarriers of a mobile communication system in the plurality of cells using Orthogonal Frequency Division Multiplexing (OFDM) when employing an omnidirectional antenna, the method comprising:

• allocating the subcarriers of the system to at least seven subcarrier groups for each cell;
• assigning priorities to subcarrier groups in each cell;
• and
• allocating independently in each cell the subcarrier groups in an order to minimize inter-cell interferences of each cell with at least one neighboring cell.

A method of allocating a plurality of subcarriers of a mobile communication system in a plurality of cells using Orthogonal Frequency Division Multiplexing (OFDM) having 60° or 120° sectors, the method comprising:

• allocating the subcarriers of the system to one of at least two subcarrier groups for each Sector for 60° sectors;
• allocating the subcarriers of the system to one of at least three subcarrier groups for each sector for 120° sectors;
• assigning priorities to the subcarrier groups in each sector;
• and
• allocating independently in each sector the subcarrier groups in an order to minimize inter-cell interferences of each cell with at least one neighboring sector.

A method of allocating a plurality of subcarriers of a mobile communication system in a plurality of cells using Orthogonal Frequency Division Multiplexing (OFDM), the method comprising:

• determining a total number of subcarriers needed in each cell for allocation to each user equipment;
• determining a number of groups of subcarriers for each cell based on the determined total number of subcarriers;
• allocating the subcarriers of the system to at least one subcarrier group for each cell;
• assigning priorities to the subcarrier groups in each cell;
• and
• allocating independently in each cell the subcarrier groups in an order to minimize inter-cell interferences of each cell with at least one neighboring cell.