in this paper, based on the analysis of the UCA beamforming algorithm, an efficient SDMA scheme using the uniform circular array (UCA) with 8 elements is proposed. As the scheme devised, the cell is sectored by 2 crossed beam groups formed by UCA and the large elevation area of the cell is covered by UCA omni-directional pattern. With SDMA technique applied in the sectors, the cellular capacity can be increased nearly 5 times with low co-channel interference. The simulation results verify that, the scheme is of good feasibility in implementation and has a practical worth to be applied in hot spots.