Capacity improvement in cellular systems with Reuse Partitioning

Reuse Partitioning (RP) is a simple technique that can be used to increase the capacity of a cellular system. With RP, a cell is divided into several concentric regions, each associated with a different cluster size. In this paper, a Markov chain model is developed to evaluate the call blocking prob ability, P-B, of the basic (no channel rearrangement) n-region RP using fix ed channel allocation (FCA). Channel rearrangements are introduced to furth er improve the capacity. For a certain RP scheme with multiple channel rear rangements (MCR), P-B is shown to have a known product-form solution. It is found that a single channel rearrangement scheme performs almost as well a s the MCR scheme. One advantage of MCR is that it reduces the difference in P-B experienced by calls in the different regions. It is shown that the ca pacity with two-region (four-region) RP with MCR is about 25% (45%) higher than that of a conventional FCA system. The effect of moving users on call blocking and dropping probabilities is also examined.