BASE STATION LINK ADAPTATION METHOD

摘要

The invention relates to a method of selecting link adaptation characteristics in a base station of an OFDM mobile digital communication system, the base station being coupled to at least one mobile station, the method comprising the steps of: measuring a mobile station s velocity in the mobile station; receiving a mobile station s velocity value from the mobile station by the base station; calculating a channel estimation and equalization with a first algorithm by the base station, if the mobile station s velocity value is smaller than a first threshold; activating a MIMO Matrix B and activating an AMC permutation mode by the base station, if the mobile station s velocity value is smaller than the first threshold, and if the mobile station occupies multiple antennas; activating a beamforming algorithm and activating the AMC permutation mode by the base station, if the mobile station s velocity value is smaller than the first threshold, and if the mobile station does not occupy multiple antennas. The method further comprises the steps of: activating a RX/TX diversity algorithm and activating a PUSC permutation mode by the base station, if the mobile station s velocity value is bigger than the first threshold, and if the mobile station does not occupy multiple antennas; activating the MIMO Matrix B and activating the PUSC permutation mode by the base station, if the mobile station s velocity value is bigger than the first threshold, if the mobile station occupies multiple antennas, and if the mobile station s velocity value is smaller than a second threshold; activating a MIMO Matrix A and activating the PUSC permutation mode by the base station, if the mobile station s velocity value is bigger than the first threshold, if the mobile station occupies multiple antennas, and if the mobile station's velocity value is bigger than the second threshold.