Patent ID: 8265030

Claim:
A base station apparatus to be used in a mobile communication system where Persistent Scheduling is performed, the base station apparatus comprising: a radio communication unit configured to perform radio communications with a user equipment terminal using radio resources provided every predetermined period based on the Persistent Scheduling; a first determination unit configured to determine whether either uplink or downlink packet data of the user equipment terminal are required to be retransmitted; and a generation unit configured to generate a downlink L1/L2 control signal including scheduling information designating the radio resources to be used for the retransmission of the packet data, wherein when determining that it is required to retransmit the uplink or downlink packet data of the user equipment terminal, the downlink L1/L2 control signal is transmitted to the user equipment terminal and the packet data to be retransmitted are transmitted by using the radio resources designated by the scheduling information.