Terminal device, base station device and radio communication method

A base station device comprising:

• transmission circuitry configured and programmed to, or configured to, transmit downlink control information;
• and
• reception circuitry configured and programmed to, or configured to, receive a demodulation reference signal associated with a transmission of a physical uplink shared channel;
• wherein
• a demodulation reference signal sequence of the demodulation reference signal is generated by multiplying a reference signal sequence by a certain sequence;
• and
• for a downlink control information format 0:
• the certain sequence is [1 1] in a case where a parameter associated with an orthogonal cover code for the demodulation reference signal is set and a temporary Cell-Radio Network Temporary Identifier (C-RNTI) was used to transmit the downlink control information;
• and
• the certain sequence is one of [1 1] and [1 −1], and is based on cyclic shift information in the downlink control information, in a case where the parameter associated with the orthogonal cover code for the demodulation reference signal is set and the C-RNTI was used to transmit the downlink control information.

A radio communication method used for a terminal device, comprising:

• receiving downlink control information on a physical downlink control channel;
• and
• transmitting a transport block on a physical uplink shared channel based on a detection of the physical downlink control channel with the downlink control information;
• wherein
• a demodulation reference signal sequence of a demodulation reference signal associated with the transmission of the physical uplink shared channel is generated by multiplying a reference signal sequence by a certain sequence;
• and
• for a downlink control information format 0:
• the certain sequence is [1 1] in a case where a parameter associated with an orthogonal cover code for the demodulation reference signal is set and temporary Cell-Radio Network Temporary Identifier (C-RNTI) was used to transmit the downlink control information for the transport block associated with the transmission of the physical uplink shared channel;
• and
• the certain sequence is one of [1 1] and [1 −1], and is based on cyclic shift information in the downlink control information, in a case where the parameter associated with the orthogonal cover code for the demodulation reference signal is set and C-RNTI was used to transmit the downlink control information for the transport block associated with the transmission of the physical uplink shared channel.

A radio communication method used for a base station device, comprising:

• transmitting downlink control information;
• and
• receiving a demodulation reference signal associated with a transmission of a physical uplink shared channel;
• wherein
• a demodulation reference signal sequence of the demodulation reference signal is generated by multiplying a reference signal sequence by a certain sequence;
• and
• for a downlink control information format 0:
• the certain sequence is [1 1] in a case where a parameter associated with an orthogonal cover code for the demodulation reference signal is set and a temporary Cell-Radio Network Temporary Identifier (C-RNTI) was used to transmit the downlink control information;
• and
• the certain sequence is one of [1 1] and [1 −1], and is based on cyclic shift information in the downlink control information, in a case where the parameter associated with the orthogonal cover code for the demodulation reference signal is set and the C-RNTI was used to transmit the downlink control information.