A method by which a terminal performs a multi-dimensional modulation (MM)-based non-orthogonal multiple access (NOMA) communication can comprise the steps of: receiving, from a base station, control information indicating a terminal specific codebook for a terminal in a predefined codebook set for an MM-based encoder; and receiving a downlink data channel from the base station on the basis of the indicated terminal specific codebook, or performing MM-based encoding on the basis of the indicated terminal specific codebook and then transmitting an uplink data channel.

A device and method is which plurality of Zadoff-Chu sequences is allocated to a frame, a value of a parameter in the Zadoff-Chu sequence is different among the plurality of Zadoff-Chu sequences, and the Zadoff-Chu sequence allocated to the frame is different among a plurality of cells.

A device and method is which plurality of Zadoff-Chu sequences is allocated to a frame, a value of a parameter in the Zadoff-Chu sequence is different among the plurality of Zadoff-Chu sequences, and the Zadoff-Chu sequence allocated to the frame is different among a plurality of cells.

The present disclosure relates to user devices, wireless communication methods, and a computer readable storage medium. A user device serving as a transmitting end according to the present disclosure comprises a processing circuit and is configured to: send a message to a receiving end device by means of a sidelink; and receive feedback information indicating the message receiving state of the receiving end device, the feedback information comprising only one of ACK and NACK. The user devices, wireless communication methods, and computer readable storage medium according to the present disclosure can be used to rationally design HARQ technology for a sidelink, so as to satisfy the requirements of reliability of sidelink communication for different services.

The present disclosure relates to user devices, wireless communication methods, and a computer readable storage medium. A user device serving as a transmitting end according to the present disclosure comprises a processing circuit and is configured to: send a message to a receiving end device by means of a sidelink; and receive feedback information indicating the message receiving state of the receiving end device, the feedback information comprising only one of ACK and NACK. The user devices, wireless communication methods, and computer readable storage medium according to the present disclosure can be used to rationally design HARQ technology for a sidelink, so as to satisfy the requirements of reliability of sidelink communication for different services.

[Object] To provide a communication device capable of considerably improving transmission efficiency of an entire system by realizing flexible design in accordance with various use cases in a communication system in which a base station device and a terminal device communicate with each other. [Solution] Provided is the communication device including: a setting unit configured to share information regarding a region specified in accordance with a predetermined pattern, with another device; and a transmission processing unit configured to broadcast HARQ feedback.

[Object] To provide a communication device capable of considerably improving transmission efficiency of an entire system by realizing flexible design in accordance with various use cases in a communication system in which a base station device and a terminal device communicate with each other. [Solution] Provided is the communication device including: a setting unit configured to share information regarding a region specified in accordance with a predetermined pattern, with another device; and a transmission processing unit configured to broadcast HARQ feedback.

A terminal is disclosed that includes a transmitter that transmits uplink control information on an uplink control channel and a processor that uses, in the transmission of the uplink control information, one of a first uplink control channel format or a second uplink control channel format based on a number of bits of the uplink control information. The first uplink control channel format uses a cyclic shift that depends on the uplink control information, and the second uplink control channel format is used for transmission of the uplink control information and a demodulation reference signal.

Optimizing the resource configuration or selection for grant-free contention-based non-orthogonal multiple access (NOMA) transmissions is an effective way to increase network capacity and reduce multi-user interference at the user equipment (UE). In some embodiments, a network node may determine the current traffic load, select multiple access (MA) sequences for the UE based on the determination, and transmit this selection to the UE for subsequent transmissions. In other embodiments, the UE may receive a message with an indication of the traffic load being experienced by the base station that the UE is attempting to connect to, and then may randomly select an MA sequence for subsequent transmissions.

This base station comprises: a control unit that allocates, on the basis of a doppler shift estimated using an uplink reference signal, a downlink reference signal common to a plurality of beams; and a transmission unit that transmits the common downlink reference signal via the plurality of beams. According to this base station communication method, the base station allocates, on the basis of a doppler shift estimated using an uplink reference signal, a downlink reference signal common to a plurality of beams, and transmits the common downlink reference signal via the plurality of beams.