Patent ID: 8064918

Claim:
A mobile communication system in which a mobile station apparatus transmits, to a base station apparatus, uplink data using a physical uplink shared channel assigned by an uplink data transmission permission signal, wherein said base station apparatus: transmits, to said mobile station apparatus, a radio resource control signal including a first instruction to periodically transmit a first reception quality information; and transmits, to said mobile station apparatus, said uplink data transmission permission signal, and wherein said mobile station apparatus: periodically transmits, to said base station apparatus, said first reception quality information according to said first instruction to periodically transmit said first reception quality information included in said radio resource control signal; transmits, to said base station apparatus, a second reception quality information using said physical uplink shared channel in a case wherein a second instruction to transmit said second reception quality information is included in said uplink data transmission permission signal; wherein said first reception quality information is transmitted, to said base station apparatus, by said mobiles station apparatus using a physical uplink control channel in a case wherein said physical uplink shared channel is not assigned, said first reception quality information is transmitted, to said base station apparatus, by said mobile station apparatus using said physical uplink shared channel in a case wherein said physical uplink shared channel is assigned by said uplink data transmission permission signal without said second instruction to transmit said second reception quality information, and said first reception quality information and said second reception quality information are selectively transmitted, to said base station apparatus, by said mobile station apparatus.