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This paper presents a case study on the frequency reuse using hierarchical radio resource management (HRRM) in an OFDMA system. In this HRRM, an access point controller is developed to dynamically assign subchannels to the access points (APs) on the basis of interference measurements and traffic situation, and the APs allocate resource elements to the mobile terminals (MTs) using an OFDMA scheduler. Using this HRRM we focus on the effect of frequency reuse in the considered system. Three types of reuse constraints with different scaling of distances between the APs are used to analyze frequency reuse effect.