Patent ID: 8306549

Claim:
A method for suppressing inter-cell interference, comprising: obtaining edge channels whose signal interference ratio (SIR) are above a first preset threshold from one or more edge channel groups to constitute a first candidate channel set, wherein the edge channels are orthogonal to edge channels of adjacent cells; calculating a correlation between each edge channel in the first candidate channel set and a strongest interference channel of the edge channel and selecting an edge channel of the lowest correlation as a tier-1 channel; obtaining central channels whose SIR are above a second preset threshold from one or more central channel groups to constitute a second candidate channel set, wherein the central channels use the same soft frequency as central channels of the adjacent cells; calculating a correlation between each central channel in the second candidate channel set and a strongest interference channel of the central channel and selecting a central channel of the lowest correlation as a tier-2 channel; and comparing SIRs of the tier-1 channel and the tier-2 channel and assigning the channel of a higher SIR to an edge terminal in the cell which the edge terminal accessed.