Method for transmitting and receiving uplink control information and devices supporting the same
Disclosed herein are a method for transmitting and receiving uplink control information between a terminal and a base station in a wireless communication system and devices supporting the same. Particularly, disclosed herein are a method for transmitting and receiving uplink control information between a terminal and a base station on a physical uplink shared channel (PUSCH) without data (e.g., UL-SCH) and operation of devices supporting the same.
1. A method for transmitting uplink control information (UCI) by a user equipment (UE) in a wireless communication system, the method comprising:
receiving, from a base station (BS), scaling information for a transmission of the UCI; and
transmitting, to the BS, the UCI on physical uplink shared channel (PUSCH) without uplink shared channel (UL-SCH) based on the scaling information,
wherein the UCI includes acknowledgement (ACK) information and channel state information (CSI),
wherein the number of first coded modulation symbols for transmission of the ACK information is determined based on the scaling information,
wherein, based on the CSI including CSI part 1 without CSI part 2, the number of second coded modulation symbols for transmission of the CSI part 1 satisfies:
Q
CSI
′
=
∑
l
=
0
N
symb
,
all
PUSCH
-
1
M
sc
Φ
UCI
(
l
)
-
Q
ACK
′
where Q′ CSI denotes the number of the second coded modulation symbols,
where Q′ ACK denotes the number of the first coded modulation symbols,
where M sc Φ UCI (l) denotes a number of resource elements that can be used for transmission of the UCI in symbol index l, and
where N symb,all PUSCH denotes a total number of symbols of the PUSCH.
2. The method according to claim 1 ,
wherein the number of the first coded modulation symbols satisfies:
Q
ACK
′
=
min
{
⌈
β
offset
ACK
·
(
O
ACK
+
L
ACK
)
c
0
·
Q
m
⌉
,
⌈
α
·
∑
l
=
l
0
N
symb
,
all
PUSCH
-
1
M
sc
Φ
UCI
(
l
)
⌉
}
where Q′ ACK denotes the number of the first coded modulation symbols,
where O ACK denotes payload size for the acknowledgement information,
where L ACK denotes a number of CRC (Cyclic Redundancy Check) bits for the acknowledgement information,
where β offset ACK denotes beta offset value for the acknowledgement information,
where c 0 denotes a target code rate of the PUSCH without the UL-SCH, and
where α denotes a scaling value indicated by the scaling information.
3. The method according to claim 1 ,
wherein the scaling information is configured by higher layer signaling.
4. The method of claim 1 ,
wherein a transmission duration of a physical uplink control channel (PUCCH) for scheduling the transmission of the UCI is overlapped with a plurality of PUSCHs,
wherein the plurality of PUSCHs includes one or more first PUSCHs scheduled by corresponding uplink grants and one or more second PUSCHs configured without corresponding uplink grants, and
wherein the PUSCH in which the UCI is transmitted is one of the one or more first PUSCHs.
5. The method of claim 2 ,
wherein the PUSCH in which the UCI is transmitted is a PUSCH transmitted first among the one or more first PUSCHs.
6. A method for receiving uplink control information (UCI) by a base station (BS) in a wireless communication system, the method comprising:
transmitting, to a user equipment (UE), scaling information for receiving the UCI; and
receiving, from the UE, the UCI on a physical uplink shared channel (PUSCH) without an uplink shared channel (UL-SCH),
wherein the UCI includes acknowledgement (ACK) information and channel state information (CSI),
wherein the number of first coded modulation symbols for transmission of the ACK information is determined based on the scaling information,
wherein, based on the CSI including CSI part 1 without CSI part 2, the number of second coded modulation symbols for transmission of the CSI part 1 satisfies:
Q
CSI
′
=
∑
l
=
0
N
symb
,
all
PUSCH
-
1
M
sc
Φ
UCI
(
l
)
-
Q
ACK
′
where Q′ CSI denotes the number of the second coded modulation symbols,
where Q′ ACK denotes the number of the first coded modulation symbols,
where M sc Φ UCI (l) denotes a number of resource elements that can be used for transmission of the UCI in symbol index l, and
where N symb,all PUSCH denotes a total number of symbols of the PUSCH.
7. The method according to claim 6 ,
wherein the number of the first coded modulation symbols satisfies:
Q
ACK
′
=
min
{
⌈
β
offset
ACK
·
(
O
ACK
+
L
ACK
)
c
0
·
Q
m
⌉
,
⌈
α
·
∑
l
=
l
0
N
symb
,
all
PUSCH
-
1
M
sc
Φ
UCI
(
l
)
⌉
}
where Q′ ACK denotes the number of the first coded modulation symbols,
where O ACK denotes payload size for the acknowledgement information,
where L ACK denotes a number of CRC (Cyclic Redundancy Check) bits for the acknowledgement information,
where β offset ACK denotes beta offset value for the acknowledgement information,
where c 0 denotes a target code rate of the PUSCH without the UL-SCH,
where α denotes a scaling value indicated by the scaling information.
8. The method according to claim 6 ,
wherein the scaling information is configured by higher layer signaling.
9. The method of claim 6 ,
wherein a transmission duration of a physical uplink control channel (PUCCH) for scheduling the transmission of the UCI is overlapped with a plurality of PUSCHs,
wherein the plurality of PUSCHs includes one or more first PUSCHs scheduled by corresponding uplink grants and one or more second PUSCHs configured without corresponding uplink grants, and
wherein the PUSCH in which the UCI is transmitted is one of the one or more first PUSCHs.
10. The method of claim 6 ,
wherein the PUSCH in which the UCI is transmitted is a PUSCH transmitted first among the one or more first PUSCHs.
11. A user equipment (UE) for transmitting uplink control information (UCI) in a wireless communication system, the UE comprising:
a transmitter;
a receiver; and
a processor connected to the transmitter and the receiver to operate,
wherein the processor is configured to:
receive, from a base station (BS), scaling information for a transmission of the UCI; and
transmit, to the BS, the UCI on physical uplink shared channel (PUSCH) without uplink shared channel (UL-SCH) based on the scaling information,
wherein the UCI includes acknowledgement (ACK) information and channel state information (CSI),
wherein the number of first coded modulation symbols for transmission of the ACK information is determined based on the scaling information,
wherein, based on the CSI including CSI part 1 without CSI part 2, the number of second coded modulation symbols for transmission of the CSI part 1 satisfies:
Q
CSI
′
=
∑
l
=
0
N
symb
,
all
PUSCH
-
1
M
sc
Φ
UCI
(
l
)
-
Q
ACK
′
where Q′ CSI denotes the number of the second coded modulation symbols,
where Q′ ACK denotes the number of the first coded modulation symbols,
where M sc Φ UCI (l) denotes a number of resource elements that can be used for transmission of the UCI in symbol index l, and
where N symb,all PUSCH denotes a total number of symbols of the PUSCH.
12. A base station (BS) for receiving uplink control information (UCI) in a wireless communication system, the BS comprising:
a transmitter;
a receiver; and
a processor connected to the transmitter and the receiver to operate,
wherein the processor is configured to:
transmit, to a user equipment (UE), scaling information for receiving the UCI; and
receive, from the UE, the UCI on a physical uplink shared channel (PUSCH) without an uplink shared channel (UL-SCH),
wherein the UCI includes acknowledgement (ACK) information and channel state information (CSI),
wherein the number of first coded modulation symbols for transmission of the ACK information is determined based on the scaling information,
wherein, based on the CSI including CSI part 1 without CSI part 2, the number of second coded modulation symbols for transmission of the CSI part 1 satisfies:
Q
CSI
′
=
∑
l
=
0
N
symb
,
all
PUSCH
-
1
M
sc
Φ
UCI
(
l
)
-
Q
ACK
′
where Q′ CSI denotes the number of the second coded modulation symbols,
where Q′ ACK denotes the number of the first coded modulation symbols,
where M sc Φ UCI (l) denotes a number of resource elements that can be used for transmission of the UCI in symbol index l, and
where N symb,all PUSCH denotes a total number of symbols of the PUSCH.