Patent ID: 8351386
Filing Date: 2013-01-08
Classification: H04B,H04L,H04W

Abstract:
1. A base station apparatus including a plurality of antennas for transmitting a plurality of beams to a plurality of user apparatuses in accordance with a SDMA (Spatial Division Multiplexing Access) scheme, comprising: a reception unit configured to receive a signal indicative of downlink reception signal quality from a user apparatus; a correction unit configured to correct the reception signal quality based on a correspondence between first reception signal quality obtained at the user apparatus in consideration of a number of interference users, the number of interference users being less than a total number of beams minus the number of beams for desired user, and second reception signal quality obtained at the user apparatus in consideration of a number of interference users, the number of interference users being equal to the total number of beams minus the number of beams for desired user; a scheduling unit configured to schedule assignment of downlink radio resources based on the corrected reception signal quality; and a transmission unit configured to transmit scheduling information indicative of the assignment of radio resources to the user apparatus, wherein if the reception signal quality is poor, the correction unit corrects the reception signal quality through slight reduction, and if the reception signal quality is good, the correction unit corrects the reception signal quality through significant reduction.