Patent ID: 8320330

Claim:
A service zone switching method based on load considering inter-cell interference in 802.16/WiBro system, comprising: selecting one of Frequency Reuse Factor (FRF)-1 zone and an FRF-3 zone in a single frame, based on the distribution and traffic load of subscriber stations present in a single cell; providing services through the selected FRF-1 zone or FRF-3 zone for the subscriber stations; calculating a density rate of FRF-1 zone or FRF-3 zone based on a service reserved rate at which the subscriber stations are being provided with the services; determining whether the subscriber stations are being provided with the services through the FRF-1 zone or FRF-3 zone by comparing system capacity with average density rate of the FRF-1 zone and FRF-3 zone; selecting a subscriber station as a victim and moving the victim to another FRF zone when a loadable zone is present in the FRF-1 zone or FRF-3 zone, wherein the victim has a greatest influence on causing the loadable situation of the corresponding zone; and moving the victim to another FRF zone until the corresponding zone is out of the loadable situation, wherein the single cell in the 802.16/WiBro system consists of 3 sectors and each sector has a base station, each base station supports services for the FRF-1 zone and the FRF-3 zone under the environment of the 802.16/WiBro system, the FRF-1 zone is a zone in which users in 3 sectors of the single cell can use all subchannels, and the FRF-3 zone is a zone in which users in each of the 3 sectors of the single cell can use one third of all subchannels.