Patent ID: 11903055
Assignee: NTT DOCOMO, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A terminal comprising:
a reception unit configured to receive allocation information of reference signals from a base station, the reference signals being used in a sidelink communication that is a direct communication between the terminal and another terminal;
a control unit configured to autonomously switch a transmission density in a time domain and a transmission density in a frequency domain of the reference signals, based on the allocation information of the reference signals; and
a transmitter configured to transmit the reference signals to another terminal, based on the transmission density in the time domain and the transmission density in the frequency domain,
wherein a transmission pattern of the reference signals, the transmission pattern being specified based on the allocation information of the reference signals, includes an interval of resource elements in which the reference signals are allocated in the time domain and the frequency domain in a resource pool.