Terminal apparatus, base station apparatus, and communication method
A terminal apparatus includes a receiver configured to receive a PDCCH including downlink control information used for scheduling of a PUSCH, a coding unit configured to encode uplink control information, and a transmitter configured to transmit the uplink control information by using the PUSCH. A coding rate R and a modulation order Q m are given based on one field included in the downlink control information. The number Q of coded bits of the uplink control information is given at least based on the number Q′ of coded modulation symbols for the uplink control information and the modulation order Q m . The number Q′ of coded modulation symbols is given at least based on the coding rate R and the modulation order Q m .
1. A terminal apparatus comprising:
reception circuitry configured or programmed to receive a Physical Downlink Control Channel (PDCCH) including downlink control information, the downlink control information being used for scheduling of a Physical Uplink Shared Channel (PUSCH);
encoding circuitry configured or programmed to encode first uplink information and second uplink information; and
transmission circuitry configured or programmed to transmit encode bits of the first uplink information and encode bits of the second uplink information using the PUSCH, wherein
a target code rate and a modulation order are indicated in a field included in the downlink control information, and
a number of coded modulation symbols for the first uplink information is given by using a value of
ceil
(
(
O
+
L
)
·
β
Q
m
·
R
)
,
O is a number of bits for the first uplink information,
L is a number of Cyclic Redundancy Check (CRC) parity bits,
β is given based on a Radio Resource Control (RRC) parameter,
Q m is the modulation order,
R is the target code rate, and
a size of the second uplink information is given by using the target coding rate and the number of coded modulation symbols for the first uplink information.
2. The terminal apparatus according to claim 1 , wherein
the number of coded modulation symbols is given by an equation of
Q
′
=
min
{
ceil
(
(
O
+
L
)
·
β
Q
m
·
R
)
,
M
max
}
,
and
M max is given based on at least a density of a Phase Tracking Reference Signal (PTRS).
3. The terminal apparatus according to claim 2 , wherein
the density of the PTRS is given by using a bandwidth scheduled for a transmission of the PUSCH.
4. A base station apparatus comprising:
transmission circuitry configured or programmed to transmit a Physical Downlink Control Channel (PDCCH) including downlink control information, the downlink control information being used for scheduling of a Physical Uplink Shared Channel (PUSCH);
reception circuitry configured or programmed to receive encode bits of first uplink information and encode bits of second uplink information using the PUSCH; and
decoding circuitry configured or programmed to decode the first uplink information and the second uplink information, wherein
a target code rate and a modulation order are indicated in a field included in the downlink control information, and
a number of coded modulation symbols for the first uplink information is given by using a value of
ceil
(
(
O
+
L
)
·
β
Q
m
·
R
)
,
O is a number of bits for the first uplink information,
L is a number of Cyclic Redundancy Check (CRC) parity bits,
β is given based on a Radio Resource Control (RRC) parameter,
Q m is the modulation order,
R is the target code rate, and
a size of the second uplink information is given by using the target coding rate and the number of coded modulation symbols for the first uplink information.
5. The base station apparatus according to claim 4 , wherein
the number of coded modulation symbols is given by an equation of
Q
′
=
min
{
ceil
(
(
O
+
L
)
·
β
Q
m
·
R
)
,
M
max
}
,
and
M max is given based on at least a density of a Phase Tracking Reference Signal (PTRS).
6. The base station apparatus according to claim 5 , wherein
the density of the PTRS is given by using a bandwidth scheduled for a transmission of the PUSCH.
7. A communication method for a terminal apparatus, comprising:
receiving a Physical Downlink Control Channel (PDCCH) including downlink control information, the downlink control information being used for scheduling of a Physical Uplink Shared Channel (PUSCH);
encoding first uplink information and second uplink information; and
transmitting encode bits of the first uplink information and encode bits of the second uplink information using the PUSCH, wherein
a target coding rate and a modulation order are indicated in a field included in the downlink control information, and
a number of coded modulation symbols for the first uplink information is given by using a value of
ceil
(
(
O
+
L
)
·
β
Q
m
·
R
)
,
O is a number of bits for the first uplink information,
L is a number of Cyclic Redundancy Check (CRC) parity bits,
β is given based on a Radio Resource Control (RRC) parameter,
Q m is the modulation order,
R is the coding rate, and
a size of the second uplink information is given by using the target coding rate and the number of coded modulation symbols for the first uplink information.
8. The communication method according to claim 7 , wherein
the number of coded modulation symbols is given by an equation of
Q
′
=
min
{
ceil
(
(
O
+
L
)
·
β
Q
m
·
R
)
,
M
max
}
,
and
M max is given based on at least a density of a Phase Tracking Reference Signal (PTRS).
9. The communication method according to claim 8 , wherein
the density of the PTRS is given by using a bandwidth scheduled for a transmission of the PUSCH.
10. A communication method for a base station apparatus, comprising:
transmitting a Physical Downlink Control Channel (PDCCH) including downlink control information, the downlink control information being used for scheduling of a (Physical Uplink Shared Channel) PUSCH;
receiving encode bits of first uplink information and encode bits of second uplink information using the PUSCH; and
decoding the first uplink information and the second uplink information, wherein
a target coding rate and a modulation order are indicated in a field included in the downlink control information, and
a number of coded modulation symbols for the first uplink information is given by using a value of
ceil
(
(
O
+
L
)
·
β
Q
m
·
R
)
,
O is a number of bits for the first uplink information,
L is a number of Cyclic Redundancy Check (CRC) parity bits,
β is given based on a Radio Resource Control (RRC) parameter,
Q m is the modulation order,
R is the target coding rate, and
a size of the second uplink information is given by using the target coding rate and the number of coded modulation symbols for the first uplink information.
11. The communication method according to claim 10 , wherein
the number of coded modulation symbols is given by an equation of
Q
′
=
min
{
ceil
(
(
O
+
L
)
·
β
Q
m
·
R
)
,
M
max
}
,
and
M max is given based on at least a density of a Phase Tracking Reference Signal (PTRS).
12. The communication method according to claim 11 , wherein
the density of the PTRS is given by using a bandwidth scheduled for a transmission of the PUSCH.