Terminal and communication method
A terminal is provided that includes a control unit configured to generate a sequence that corresponds to a sequence of a reference signal for channel state information between a base station and a terminal, and a transmission unit configured to transmit the generated reference signal having the sequence to another terminal.
1. A user apparatus comprising:
a processor configured to generate a sequence of a sidelink reference signal by using a slot number in a sidelink radio frame as a parameter; and
a transmitter configured to transmit the reference signal to another terminal,
wherein a maximum number of ports of the sidelink reference signal is two, and the processor performs mapping according to a condition including the maximum number of ports.
2. The user apparatus as claimed in claim 1 , wherein presence or absence of the sidelink reference signal is indicated by one bit in SCI (Sidelink control Information) indicating transmission of a PSSCH (Physical Sidelink Shared Channel).
3. The user apparatus as claimed in claim 1 , wherein a time domain resource of the sidelink reference signal is provided by a parameter of RRC signaling of direct communication between devices.
4. A communication method of a user apparatus, the method comprising:
generating a sequence of a sidelink reference signal by using a slot number in a sidelink radio frame as a parameter; and
transmitting the reference signal to another terminal,
wherein a maximum number of ports of the sidelink reference signal is two, and the user apparatus performs mapping according to a condition including the maximum number of ports.