A method for scheduling transmissions of a plurality of cells in a cluster of a wireless communications system including one or more base stations and a joint scheduler, the method comprising: providing a set of channels to enable an intra-cell transmission orthogonal within each cell of said plurality of cells and inter-cell transmissions orthogonal across the cluster of cells associated with said one or more base stations; coordinating scheduling of said intra-cell transmission with said inter-cell transmissions for said cluster of cells between at least two base stations of said base stations; managing one or more radio resources of said one or more base stations of the cluster by the joint scheduler in real time to jointly schedule said intra-cell transmission with said inter-cell transmissions of said cluster of cells, wherein said set of channels being virtual channels having an orthogonality property effective to reduce interference among said intra-cell and inter-cell transmissions; controlling interference between said cluster of cells by the joint scheduler to jointly optimize an overall performance parameter of said wireless communications system, and characterised by fetching user information of a radio resource characteristic for each user and an indication of cross correlation between said cluster of cells to manage overall interference for said cluster of cells; and coordinating control and virtual channel assignment between said cluster of cells by delivering control information and an indication of interference to each base station of said one or more base stations with a time stamp based on said user information and said indication of cross correlation. providing a set of channels to enable an intra-cell transmission orthogonal within each cell of said plurality of cells and inter-cell transmissions orthogonal across the cluster of cells associated with said one or more base stations; coordinating scheduling of said intra-cell transmission with said inter-cell transmissions for said cluster of cells between at least two base stations of said base stations; managing one or more radio resources of said one or more base stations of the cluster by the joint scheduler in real time to jointly schedule said intra-cell transmission with said inter-cell transmissions of said cluster of cells, wherein said set of channels being virtual channels having an orthogonality property effective to reduce interference among said intra-cell and inter-cell transmissions; controlling interference between said cluster of cells by the joint scheduler to jointly optimize an overall performance parameter of said wireless communications system, and characterised by fetching user information of a radio resource characteristic for each user and an indication of cross correlation between said cluster of cells to manage overall interference for said cluster of cells; and coordinating control and virtual channel assignment between said cluster of cells by delivering control information and an indication of interference to each base station of said one or more base stations with a time stamp based on said user information and said indication of cross correlation.