Communication system, base station and communication terminal

Abstract

Provided is a communication system capable of suppressing increase in the power consumption of a communication terminal device, degradation in the communication quality, and reduction in the use efficiency of radio resources. A base station device (gNB) notifies a communication terminal device (UE) of information on the next reception timing. The UE receives, for example, a downlink control signal in a subframe. The UE obtains, from the downlink control signal, information on a piece of user data in the subframe, and the information on the next reception timing. The UE transmits and receives the piece of user data to and from the gNB. The information on the next reception timing indicates a subframe as the next reception timing of the UE. The UE receives a downlink control signal in the subframe.

1 . A communication system comprising a base station and a communication terminal which can perform radio communication with the base station, wherein
 the base station transmits a physical downlink control channel reception period and an offset, and   the communication terminal receives the physical downlink control channel reception period and the offset.   
     
     
         2 . A base station in a communication system comprising a base station and a communication terminal which can perform radio communication with the base station, wherein
 the base station transmits a physical downlink control channel reception period and an offset.   
     
     
         3 . A communication terminal in a communication system comprising a base station and a communication terminal which can perform radio communication with the base station, wherein
 the communication terminal receives a physical downlink control channel reception period and an offset.