Capacity of reuse partitioning schemes for OFDMA wireless data networks

We consider the sector capacity of an OFDMA data network, defined in terms of the number of users that can be supported while satisfying a minimum flow throughput requirement. A closed queueing network model to evaluate flow throughputs is extended to the case of reuse partitioning. The model is used to evaluate the sector capacity of reuse 1, fractional frequency reuse (FFR) and soft frequency reuse (SFR). A hybrid simulation/analysis approach is taken, where the queueing model is coupled with a peak rate distribution obtained via simulation. Numerical results indicate that FFR with a large edge band size can deliver the highest capacity when the flow throughput requirement is not very high; for a high throughput requirement, reuse 1 is the best choice.