Patent ID: 9264202
Filing Date: 2016-02-16
CPC Classification: H04B,H04L,H04W

Claim Text:
1. A mobile communication system in which a mobile station apparatus which is configured to transmit, to a base station apparatus, uplink data on a physical uplink shared channel, the physical uplink shared channel being scheduled by using a physical downlink control channel, the mobile communication system comprising: the base station apparatus which is configured to transmit on the physical downlink control channel, to the mobile station apparatus, an indication instructing the mobile station apparatus to transmit reception quality information without the uplink data on the physical uplink shared channel, the physical uplink shared channel being scheduled by using the physical downlink control channel; and the mobile station apparatus which is configured to transmit on the physical uplink shared channel, to the base station apparatus, the reception quality information without the uplink data in a case that the indication is received on the physical downlink control channel, wherein the indication is specified based on values to which a plurality of fields of information transmitted on the physical downlink control channel are set, a first field of the plurality of fields is a field for instructing the mobile station apparatus to transmit the reception quality information, a second field of the plurality of fields is a field for a hybrid automatic repeat request redundancy version, and for the indication instructing the mobile station apparatus to transmit the reception quality information without the uplink data on the physical uplink shared channel, the first field for instructing the mobile station apparatus to transmit the reception quality information is set to a first value and the second field for the hybrid automatic repeat request redundancy version is set to a second value, and the first value and the second value are respectively predetermined values.