Method and system for reducing wireless multi-cell interferences through segregated channel assignments and segregated antenna beams

A method for reducing multi-frequency signal interference in a wireless communication network, the network having a plurality of cells bordering on each other, each cell using a predetermined frequency spectrum for communications therein, the method comprising:

• segregating a first cell into a first number of geographical segments;
• dividing the predetermined frequency spectrum for the first cell into a plurality of channels;
• establishing a channel assignment priority hierarchy for associating one or more channels to each geographical segment of the first cell;
• repeating the above three steps for each cell bordering with the first cell;
• and
• assigning channels to a terminal entering a segregated geographical segment of the first cell according to the established channel assignment priority hierarchy,
• wherein the channel assignment priority hierarchy for the first cell and its bordering cells assures that the assigned channels are selected from the channels associated with the geographical segment of the first cell in which the terminal locates, and wherein the channels for such a geographical segment are different from the channels of a similarly segregated segment of another wireless cell that immediately borders therewith.

A base station transceiver system for reducing multi-cell signal interferences in a wireless communication network, comprising:

• means for dividing an available frequency spectrum into a plurality of channels;
• means for segregating a first wireless communication coverage unit into a first number of geographical segments;
• means for grouping the channels into the first number of channel blocks;
• and
• means for assigning each channel block to at least one of the segregated geographical segments with predetermined priorities,
• wherein the channels in different channel blocks exhibit no higher mutual interference than the channels in the same channel block, and wherein the channel block assigned for each segregated segment of the first wireless communication coverage unit is different from the channel block assigned for the segregated segment of a second wireless communication coverage unit that immediately borders with the segregated segment of the first wireless coverage unit even if the first and second wireless communication coverage units share the same frequency spectrum.