MOBILE COMMUNICATION METHOD, RADIO BASE STATION AND MOBILE STATION

摘要

A mobile communication system comprises: a step (A) in which when having received an uplink scheduling grant including CB-RNTI, a mobile station (UE) transmits, to a radio base station (eNB), an upstream data signal by use of a shared upstream resource designated by the uplink scheduling grant; a step (B) in which when having successfully received the upstream data signal transmitted by the mobile station (UE), the radio base station (eNB) transmits a downstream control signal including CB-RNTI; and a step (C) in which the radio base station (eNB) transmits MAC-CE including the C-RNTI of the mobile station (UE) by use of a downstream resource designated by the downstream control signal.