Patent ID: 7937111
Filing Date: 2011-05-03
Classification: H04B,H04L,H04W

Abstract:
1. A wireless base station apparatus configured to perform wireless communication with a wireless communications terminal device, the apparatus comprising: a radio quality information offsetting unit configured to adjust downlink radio quality information reported from the wireless communications terminal device, to produce offset-adjusted radio quality information, such that a block error rate becomes a target level, based on a downlink transmission confirmation message transmitted from the wireless communication terminal and a required downlink quality; a transport format determination unit configured to determine a downlink transport format based on the offset-adjusted radio quality information; and a transmitting unit configured to transmit on a downlink channel with the determined downlink transport format, wherein the radio quality information offsetting unit is further configured to produce the offset-adjusted radio quality information, in which an offset value is increased when the downlink transmission confirmation message transmitted from the wireless communications terminal includes an ACK, produce the offset-adjusted radio quality information, in which the offset value is decreased when the downlink transmission confirmation message transmitted from the wireless communications terminal includes a NACK, and produce the offset-adjusted radio quality information, in which the offset value is unchanged when the downlink transmission confirmation message transmitted from the wireless communications terminal includes a DTX.