Communication method and communications apparatus
The present disclosure relates to communication methods in a UCI-only scenario. One example method includes receiving downlink control information used to schedule a PUSCH, where the PUSCH includes a first frequency hopping resource and a second frequency hopping resource, and a time-domain start symbol of the first frequency hopping resource is before a time-domain start symbol of the second frequency hopping resource, and sending first UCI on the PUSCH, where the first UCI includes at least one of an HARQ-ACK, CSI-part1, or CSI-part2, where a quantity G CSI-part1 (1) of coded bits that are of the CSI-part1 in the first UCI and that are mapped onto the first frequency hopping resource is a smaller one of a fourth value and a fifth value.
1. A communication method, comprising:
receiving downlink control information, wherein the downlink control information is used to schedule a physical uplink shared channel (PUSCH), wherein the PUSCH is used to carry only first uplink control information (UCI), wherein the PUSCH comprises a first frequency hopping resource and a second frequency hopping resource, and wherein a time-domain start symbol of the first frequency hopping resource is before a time-domain start symbol of the second frequency hopping resource; and
sending the first UCI on the PUSCH, wherein the first UCI comprises a channel state information part 1 (CSI-part1), or the first UCI comprises a hybrid automatic repeat request-acknowledgment (HARQ-ACK) and the CSI-part1, wherein:
when a quantity of HARQ-ACK bits is greater than 2, G CSI-part1 (1)=min(N L ·Q m ·└G CSI-part1 /(2·N L ·Q m )┘, M 1 ·N L ·Q m −G ACK (1));
when a quantity of HARQ-ACK bits is less than or equal to 2, G CSI-part1 (1)=min(N L ·Q m ·└G CSI-part1 /(2·N L ·Q m )┘, M 1 ·N L ·Q m −G rvd ACK (1));
wherein G CSI-part1 (1) is a quantity of coded bits that are of the CSI-part1 in the first UCI and that are mapped onto the first frequency hopping resource, G CSI-part1 (1) is a quantity of coded bits of the CSI-part1 in the first UCI;
M
1
=
∑
l
=
0
N
symb
,
hop
PUSCH
(
1
)
-
1
M
SC
UCI
(
l
)
,
N symb,hop PUSCH (1) is a quantity of symbols in the first frequency hopping resource, M sc UCI (l) is a quantity of resource elements (REs) that can carry UCI data on a symbol l, N L is a quantity of transmission layers of the PUSCH, Q m is a modulation order of the PUSCH, G ACK (1) is a quantity of coded bits that are of the HARQ-ACK in the first UCI and that are mapped onto the first frequency hopping resource, G rvd ACK (1) is a quantity of coded bits that can be mapped onto reserved REs in the first frequency hopping resource, and the reserved REs in the first frequency hopping resource are reserved for transmitting potential HARQ-ACK which has less than or equal to 2 bits.
2. The method according to claim 1 , wherein:
G rvd ACK (1)=N L ·Q m ·┌G rvd ACK /(2·N L ·Q m )┐),
G ACK (1)min=(N L ·Q m ·┌G ACK /(2·N L ·Q m )┐, M 3 ·N L ·Q m ),
wherein G rvd ACK is a sum of a quantity of coded bits mapped onto the reserved REs in the first frequency hopping resource and a quantity of coded bits mapped onto reserved REs in the second frequency hopping resource, wherein G ACK is a quantity of coded bits of the HARQ-ACK in the first UCI, and wherein M 3 is a quantity of REs that are after a first group of consecutive demodulation reference signal (DMRS) symbols on the first frequency hopping resource and are capable of being used to carry data.
3. A communication method, comprising:
sending downlink control information, wherein the downlink control information is used to schedule a physical uplink shared channel (PUSCH), wherein the PUSCH is used to carry only first uplink control information (UCI), wherein the PUSCH comprises a first frequency hopping resource and a second frequency hopping resource, and wherein a time-domain start symbol of the first frequency hopping resource is before a time-domain start symbol of the second frequency hopping resource; and
receiving the first UCI on the PUSCH, wherein the first UCI comprises a channel state information part 1 (CSI-part1), or the first UCI comprises a hybrid automatic repeat request-acknowledgment (HARQ-ACK) and the CSI-part1, wherein:
when a quantity of HARQ-ACK bits is greater than 2, G CSI-part1 (1)=min(N L ·Q m ·└G CSI-part1 /(2·N L ·Q m )┘, M 1 ·N L ·Q m −G ACK (1));
when a quantity of HARQ-ACK bits is less than or equal to 2, G CSI-part1 (1)=min(N L ·Q m ·└G CSI-part1 /(2·N L ·Q m )┘, M 1 ·N L ·Q m −G rvd ACK (1));
wherein G CSI-part1 (1) is a quantity of coded bits that are of the CSI-part1 in the first UCI and that are mapped onto the first frequency hopping resource, G CSI-part1 is a quantity of coded bits of the CSI-part1 in the first UCI;
M
1
=
∑
l
=
0
N
symb
,
hop
PUSCH
(
1
)
-
1
M
SC
UCI
(
l
)
,
N symb,hop PUSCH (1) quantity of symbols in the first frequency hopping resource, M sc UCI (l) is a quantity of resource elements (REs) that can carry UCI on a symbol l, N L is a quantity of transmission layers of the PUSCH, Q m is a modulation order of the PUSCH, G ACK (1) is a quantity of coded bits that are of the HARQ-ACK in the first UCI and that are mapped onto the first frequency hopping resource, G rvd ACK (1) is a quantity of coded bits that can be mapped onto reserved REs in the first frequency hopping resource, and the reserved REs in the first frequency hopping resource is reserved for transmitting potential HARQ-ACK which has less than or equal to 2 bits.
4. The method according to claim 3 , wherein:
G rvd ACK (1)=N L ·Q m ·┌G rvd ACK /(2·N L ·Q m )┐),
G ACK (1)min=(N L ·Q m ·┌G ACK /(2·N L ·Q m )┐, M 3 ·N L ·Q m ),
wherein G rvd ACK is a sum of a quantity of coded bits mapped onto the reserved REs in the first frequency hopping resource and a quantity of coded bits mapped onto reserved REs in the second frequency hopping resource, wherein G ACK is a quantity of coded bits of the HARQ-ACK in the first UCI, and wherein M 3 is a quantity of REs that are after a first group of consecutive demodulation reference signal (DMRS) symbols on the first frequency hopping resource and are capable of being used to carry data.
5. A communications apparatus, comprising:
one or more processors, and
a storage medium storing program instructions, wherein, when executed by the one or more processors, the program instructions cause the communications apparatus to:
receive downlink control information, wherein the downlink control information is used to schedule a physical uplink shared channel (PUSCH), wherein the PUSCH is used to carry only first uplink control information (UCI), wherein the PUSCH comprises a first frequency hopping resource and a second frequency hopping resource, and wherein a time-domain start symbol of the first frequency hopping resource is before a time-domain start symbol of the second frequency hopping resource; and
send the first UCI on the PUSCH, wherein the first UCI comprises a channel state information part 1 (CSI-part1), or the first UCI comprises a hybrid automatic repeat request-acknowledgment (HARQ-ACK) and the CSI-part1, wherein:
when a quantity of HARQ-ACK bits is greater than 2, G CSI-part1 (1)=min(N L ·Q m ·└G CSI-part1 /(2·N L ·Q m )┘, M 1 ·N L ·Q m −G ACK (1));
when a quantity of HARQ-ACK bits is less than or equal to 2, G CSI-part1 (1)=min(N L ·Q m ·└G CSI-part1 /(2·N L ·Q m )┘, M 1 ·N L ·Q m −G rvd ACK (1));
wherein G CSI-part1 (1) is a quantity of coded bits that are of the CSI-part1 in the first UCI and that are mapped onto the first frequency hopping resource, G CSI-part1 is a quantity of coded bits of the CSI-part1 in the first UCI;
M
1
=
∑
l
=
0
N
symb
,
hop
PUSCH
(
1
)
-
1
M
SC
UCI
(
l
)
,
N symb,hop PUSCH (1) is a quantity of symbols in the first frequency hopping resource, M sc UCI (l) is a quantity of resource elements (REs) that can carry UCI on a symbol l, N L is a quantity of transmission layers of the PUSCH, Q m is a modulation order of the PUSCH, G ACK (1) is a quantity of coded bits that are of the HARQ-ACK in the first UCI and that are mapped onto the first frequency hopping resource, G rvd ACK (1) is a quantity of coded bits that can be mapped onto reserved REs in the first frequency hopping resource, and the reserved REs in the first frequency hopping resource is reserved for transmitting potential HARQ-ACK which has less than or equal to 2 bits.
6. The communications apparatus according to claim 5 , wherein:
G rvd ACK (1)=N L ·Q m ·┌G rvd ACK /(2·N L ·Q m )┐),
G ACK (1)min=(N L ·Q m ·┌G ACK /(2·N L ·Q m )┐, M 3 ·N L ·Q m ),
wherein G rvd ACK is a sum of a quantity of coded bits mapped onto the reserved REs in the first frequency hopping resource and a quantity of coded bits mapped onto reserved REs in the second frequency hopping resource, wherein G ACK is a quantity of coded bits of the HARQ-ACK in the first UCI, and wherein M 3 is a quantity of REs that are after a first group of consecutive demodulation reference signal (DMRS) symbols on the first frequency hopping resource and are capable of being used to carry data.
7. A communications apparatus, comprising:
one or more processors; and
a storage medium storing program instructions, wherein, when executed by the one or more processors, the program instructions cause the communications apparatus to:
send downlink control information, wherein the downlink control information is used to schedule a physical uplink shared channel (PUSCH), wherein the PUSCH is used to carry only first uplink control information (UCI), wherein the PUSCH comprises a first frequency hopping resource and a second frequency hopping resource, and wherein a time-domain start symbol of the first frequency hopping resource is before a time-domain start symbol of the second frequency hopping resource; and
receive the first UCI on the PUSCH, wherein the first UCI comprises a channel state information part 1 (CSI-part1), or the first UCI comprises a hybrid automatic repeat request-acknowledgment (HARQ-ACK) and the CSI-part1, wherein:
when a quantity of HARQ-ACK bits is greater than 2, G CSI-part1 (1)=min(N L ·Q m ·└G CSI-part1 /(2·N L ·Q m )┘, M 1 ·N L ·Q m −G ACK (1));
when a quantity of HARQ-ACK bits is less than or equal to 2, G CSI-part1 (1)=min(N L ·Q m ·└G CSI-part1 /(2·N L ·Q m )┘, M 1 ·N L ·Q m −G rvd ACK (1));
wherein G CSI-part1 (1) is a quantity of coded bits that are of the CSI-part1 in the first UCI and that are mapped onto the first frequency hopping resource, G CSI-part1 a quantity of coded bits of the CSI-part1 in the first UCI;
M
1
=
∑
l
=
0
N
symb
,
hop
PUSCH
(
1
)
-
1
M
SC
UCI
(
l
)
,
N symb,hop PUSCH (1) is a quantity of symbols in the first frequency hopping resource, M sc UCI (l) is a quantity of resource elements (REs) that can carry UCI on a symbol l, N L is a quantity of transmission layers of the PUSCH, Q m is a modulation order of the PUSCH, G ACK (1) is a quantity of coded bits that are of the HARQ-ACK in the first UCI and that are mapped onto the first frequency hopping resource, G rvd ACK (1) is a quantity of coded bits that can be mapped onto reserved REs in the first frequency hopping resource, and the reserved REs in the first frequency hopping resource is reserved for transmitting potential HARQ-ACK which has less than or equal to 2 bits.
8. The communications apparatus according to claim 7 , wherein:
G rvd ACK (1)=N L ·Q m ·┌G rvd ACK /(2·N L ·Q m )┐),
G ACK (1)min=(N L ·Q m ·┌G ACK /(2·N L ·Q m )┐, M 3 ·N L ·Q m ),
wherein G rvd ACK is a sum of a quantity of coded bits mapped onto the reserved REs in the first frequency hopping resource and a quantity of coded bits mapped onto reserved REs in the second frequency hopping resource, wherein G ACK is a quantity of coded bits of the HARQ-ACK in the first UCI, and wherein M 3 is a quantity of REs that are after a first group of consecutive demodulation reference signal (DMRS) symbols on the first frequency hopping resource and are capable of being used to carry data.