Terminal device, base station device, and communication method
A terminal apparatus including a coding unit configured to code a payload of uplink control information (UCI) and to perform rate matching of coded bits of the payload and a transmitter configured to transmit the UCI, wherein the payload includes part or all of hybrid automatic repeat request-acknowledgement (HARQ-ACK) information, a scheduling request, and channel state information (CSI), a length E UCI of an output sequence of the rate matching is given based on a first number O CRC of cyclic redundancy check (CRC) bits, the first number O CRC of CRC bits is given based on a size of the payload, and a size of second CRC bits added to the payload is given based on the size of the payload and the length E UCI of the output sequence of the rate matching.
1. A terminal apparatus, comprising:
a coding unit configured to code a payload of uplink control information (UCI) and to perform rate matching of coded bits of the payload to generate an output sequence, the payload comprising at least one of hybrid automatic repeat request-acknowledgement (HARQ-ACK) information, a scheduling request, and channel state information (CSI); and
a transmitter configured to transmit the output sequence, wherein the coding unit is further configured to:
determine a number of first cyclic redundancy check (CRC) bits based on a size of the payload,
the number of first CRC bits being equal to 0 in a case that the size of the payload is less than 12 bits,
the number of first CRC bits being equal to 6 in a case that the size of the payload is equal to or larger than 12 bits and less than 20 bits, and
the number of first CRC bits being equal to 11 in a case that the size of the payload is equal to or larger than 20 bits;
determine a length of the output sequence based on the size of the payload, the number of first CRC bits, and a maximum coding rate;
and
determine a number of second CRC bits which are added to the payload before the payload is coded, based on the size of the payload and the length of the output sequence.
2. A base station apparatus comprising:
a receiver configured to decode a payload of uplink control information (UCI) and receive the UCI, wherein
the payload includes at least one of hybrid automatic repeat request-acknowledgement (HARQ-ACK) information, a scheduling request, and channel state information (CSI), and the receiver is further configured to:
determine a number of first cyclic redundancy check (CRC) bits based on a size of the payload,
the number of first CRC bits being equal to 0 in a case that the size of the payload is less than 12 bits,
the number of first CRC bits being equal to 6 in a case that the size of the payload is equal to or larger than 12 bits and less than 20 bits, and
the number of first CRC bits being equal to 11 in a case that the size of the payload is equal to or larger than 20 bits;
determine a length of an output sequence of a terminal apparatus performing rate matching of coded bits in the payload based on the size of the payload, the number of first CRC bits, and a maximum coding rate;
and
determine a number of second CRC bits which are added to the payload before the payload is coded, based on the size of the payload and the length of the output sequence.
3. A communication method used for a terminal apparatus, the communication method comprising:
coding a payload of uplink control information (UCI), the payload comprising at least one of hybrid automatic repeat request-acknowledgement (HARK-ACK) information, a scheduling request, and channel state information (CSI);
performing rate matching of coded bits in the payload to generate an output sequence; and
transmitting the output sequence, wherein coding the payload of the UCI comprises:
determining a number of first cyclic redundancy check (CRC) bits based on a size of the payload,
the number of first CRC bits being equal to 0 in a case that the size of the payload is less than 12 bits,
the number of first CRC bits being equal to 6 in a case that the size of the payload is equal to or larger than 12 bits and less than 20 bits, and
the number of first CRC bits being equal to 11 in a case that the size of the payload is equal to or larger than 20 bits;
determining a length of the output sequence based on the size of the payload, the number of first number CRC bits, and a maximum coding rate;
and
determining a number of second CRC bits which are added to the payload before the payload is coded, based on the size of the payload and the length of the output sequence.