The frequency-reuse method is useful for increasing the efficiency of spectrum usage but results in co-channel interference because the same identical frequency channel is used repeatedly in different co-channel cells. My main focus is on: How to reduce co-channel interference of cellular mobile communication. Different methods & techniques to reduced co-channel interference will be discussed. All necessary theory, mechanism and diagram will be presented clearly. Extensive literature review will be performed & data collected from various organizations will be analyzed for this project.