Abstract: Aiming at the increasing rectuirement of interference mitigation in wireless communiation system, this paper raised a new style of frame structure design-"Time-frequency division fractional frequency reuse" by reallocating subcarriers in frames. This new method integrates the modes of time division and frequency division on assigning resource blocks after modeling system capacity. The corresponding frame structure has a more precise granularity for adjustment compared with tradition fractional frequency reuse pattern. I}he results of simulation validate its advantages on system fairness and throughput of edge users, with the cost of slight capacity drop of the entire system.

Key words: Fractional frecauency reuse, Interference mitigation, Proportionally fair scheduler, Reuse factor, Throughput