Terminal device, base station device, communication method, and integrated circuit for processing demodulation reference signals

摘要

There are provided a terminal device, a base station device, and an integrated circuit that enable a base station device and a terminal device to determine parameters related to uplink signals or uplink reference signals and to perform efficient communication. A terminal device that transmits a demodulation reference signal associated with a physical uplink shared channel to a base station device includes determining a sequence group number on the basis of a value of a parameter configured by a higher layer, determining the sequence group number on the basis of a physical layer cell identity, and generating a sequence of the demodulation reference signal on the basis of the sequence group number, wherein the sequence group number is determined on the basis of the physical layer cell identity in a case where a transmission on the physical uplink shared channel corresponding to a downlink control information format to which CRC parity bits scrambled by a Temporary C-RNTI are attached is performed in a random access procedure.

主权项

1. A terminal device comprising:
scheduling circuitry configured to generate a demodulation reference signal associated with transmission of a physical uplink shared channel, a demodulation reference signal sequence of the demodulation reference signal associated with the transmission of the physical uplink shared channel being given by a sequence group number and a value related to a cyclic shift, transmitting circuitry configured to transmit, to a base station device, the demodulation reference signal, the sequence group number being given by a first parameter, the value related to the cyclic shift being given by a second parameter, wherein a value of the first parameter is given by a value of first information configured by a higher layer in a case that the value of the first information is configured by the higher layer and the transmission of the physical uplink shared channel corresponds to downlink control information to which Cyclic Redundancy Check (CRC) parity bits scrambled by a Cell-Radio Network Temporary Identifier (C-RNTI) are attached, a value of the first parameter is given by a physical layer cell identity in a case that no value of the first information is configured by the higher layer, a value of the first parameter is given by the physical layer cell identity in a case that the transmission of the physical uplink shared channel corresponds to a random access response grant, a value of the second parameter is given by a value of second information configured by the higher layer in a case that the value of the second information is configured by the higher layer and the transmission of the physical uplink shared channel corresponds to downlink control information to which Cyclic Redundancy Check (CRC) parity bits scrambled by a Cell-Radio Network Temporary Identifier (C-RNTI) are attached, a value of the second parameter is given by the physical layer cell identity in a case that no value of the second information is configured by the higher layer, and a value of the second parameter is given by the physical layer cell identity in a case that the transmission of the physical uplink shared channel corresponds to the random access response grant.