Method, device, and computer storage medium of communication for multiple PDSCH scheduling and HARQ feedback for multiple groups in communication system
Embodiments of the present disclosure relate to methods, devices and computer readable media for communication. A network device generates downlink control information scheduling multiple data channels grouped into a plurality of groups, and transmits the downlink control information to a terminal device. Upon receipt of the downlink control information, the terminal device performs data transmission between the terminal device and the network device based on the grouped data channels. In this way, a payload of the downlink control information can be reduced and false detection rate can also be reduced.
1 . A user equipment (UE) comprising:
a receiver configured to receive, from a base station, single downlink control information (DCI) for scheduling multiple Physical Downlink Shared Channel (PDSCH), the single DCI including first information associated with a value of each of multiple PDSCH, wherein the receiver is configured to receive, from the base station, second information associated with a number of groups;
a processor configured to divide the multiple PDSCHs, scheduled by the single DCI, into the groups based on the first information and the second information; and
a transmitter configured to generate Hybrid Automatic Repeat Request (HARQ) information for each of the groups,
wherein:
the transmitter is further configured to:
generate an acknowledgement (ACK) for a HARQ information bit of a group of the groups if the receiver correctly receives all PDSCH(s) of the group, and
generate a non-acknowledgement (NACK) for the HARQ information bit of the group if the receiver incorrectly receives at least one PDSCH of the group.
2 . The UE according to claim 1 , wherein
the value is a Start and Length Indicator Value (SLIV), and
the number of the multiple PDSCH, scheduled by the single DCI, is signaled by the number of the indicated SLIV in the first information included in the single DCI.
3 . The UE according to claim 1 , wherein
the processor is configured to divide the groups into a first group and a second group, and
determine the number of PDSCHs included in each of the groups based on the following formulas:
M
1
=
mod
(
C
,
M
)
(
1
)
M
2
=
M
-
M
1
(
2
)
K
1
=
⌈
C
M
⌉
(
3
)
K
2
=
⌊
C
M
⌋
,
(
4
)
if M 1 is more than 0,
C is given by the first information,
M is given by the second information,
M 1 corresponds to the number of the groups in the first type,
M 2 corresponds to the number of the groups in the second type,
K 1 corresponds to the number of PDSCHs included in each of the groups in the first type,
K 2 corresponds to the number of PDSCHs included in each of the groups in the second type.
4 . A method for a user equipment (UE), the method comprising:
receiving, from a base station, single downlink control information (DCI) for scheduling multiple Physical Downlink Shared Channel (PDSCH), the single DCI including first information associated with a value of each of multiple PDSCH;
receiving, from the base station, second information associated with a number of groups;
dividing the multiple PDSCHs, scheduled by the single DCI, into the groups based on the first information and the second information; and
generating Hybrid Automatic Repeat Request (HARQ) information for each of the groups,
wherein the generating the HARQ information for each of the groups comprises:
generating an acknowledgement (ACK) for a HARQ information bit of a group of the groups if the receiver correctly receives all PDSCH(s) of the group, and
generating a non-acknowledgement (NACK) for the HARQ information bit of the group if the receiver incorrectly receives at least one PDSCH of the group.
5 . The method according to claim 4 , wherein
the value is a Start and Length Indicator Value (SLIV), and
the number of the multiple PDSCH, scheduled by the single DCI, is signaled by the number of the indicated SLIV in the first information included in the single DCI.
6 . The method according to claim 4 , wherein
the dividing comprises:
dividing the groups into a first group and a second group, and
determining the number of PDSCHs included in each of the groups based on the following formulas:
M
1
=
mod
(
C
,
M
)
(
1
)
M
2
=
M
-
M
1
(
2
)
K
1
=
⌈
C
M
⌉
(
3
)
K
2
=
⌊
C
M
⌋
,
(
4
)
if M 1 is more than 0,
C is given by the first information,
M is given by the second information,
M 1 corresponds to the number of the groups in the first type,
M 2 corresponds to the number of the groups in the second type,
K 1 corresponds to the number of PDSCHs included in each of the groups in the first type,
K 2 corresponds to the number of PDSCHs included in each of the groups in the second type.