CBWL for sectorized cellular communications

Channel Borrowing Without Locking (CBWL) is a family of channel assignment schemes for cellular communication systems. They allow real-time borrowing of channels from adjacent cells without the need for channel locking in co-channel cells. In this paper, an analysis of co-channel interference for CBWL schemes in sectorized cellular systems is presented. Two typical configurations are analyzed. One has 1200 directional antennas and a reuse factor of 7. The other has 600 directional antennas and a reuse factor of 4. The analysis shows that CBWL can significantly enhance the traffic capacity of sectorized cellular systems at the cost of a slight increase of co-channel interference in comparison with the corresponding sectorized scheme without CBWL. The research reported in this paper was supported in part by the U.S. National Science Foundation under Grant No. NCR 90251:31and in part by 1ST/SOlO under Grant No. NOOO1491-J406:3, administered by the U.S. Office of Naval Research.