Method and apparatus of transmitting uplink signal
A method and apparatus for transmitting an uplink signal are disclosed. The method for transmitting an uplink signal by a communication apparatus in a wireless communication system includes channel encoding control information, and multiplexing the channel encoded control information with a plurality of data blocks by performing channel interleaving, wherein the number of channel encoded symbols for the control information is determined using an inverse number of the sum of a plurality of spectral efficiencies (SEs) for initial transmission of the plurality of data blocks.
1. A method for transmitting a signal by a user equipment in a wireless communication system, the method comprising:
channel encoding, by the user equipment, control information;
generating, by the user equipment, the signal by performing channel interleaving such that the channel encoded control information is multiplexed with a plurality of data blocks; and
transmitting, by the user equipment, the signal to a base station,
wherein the number of channel encoded symbols for the control information is determined using the following equation:
⌈
Payload
UCI
α
·
λ
1
·
N
RE_PUSCH
(
1
)
initial
·
λ
2
·
N
RE_PUSCH
(
2
)
initial
Payload
Data
(
1
)
·
λ
2
·
N
RE_PUSCH
(
2
)
initial
+
Payload
Data
(
2
)
·
λ
1
·
N
RE_PUSCH
(
1
)
initial
·
β
offset
PUSCH
⌉
where, Payload UCI is a size of the control information, Payload Data(1) is a size of a first data block, N RE — PUSCH(1) initial is the number of resource elements (REs) for initial PUSCH transmission of the first data block, Payload Data(2) is a size of a second data block, N RE — PUSCH(2) initial is the number of resource elements (REs) for initial PUSCH transmission of the second data block, β offset PUSCH is an offset value, α is an integer of 1 or higher, λ 1 is an integer of 1 or higher, and λ 2 is an integer of 1 or higher, and ┌ ┐ is a ceiling function.
2. The method according to claim 1 , wherein:
N RE — PUSCH(i)initial is denoted by N RE — PUSCH(i) initial =M sc PUSCH(i)-initial ·N stmb PUSCH(i)-initial , and a size of an i-th data block is denoted by
∑
r
=
0
C
i
-
1
K
r
i
,
where, M sc PUSCH(i)-initial is the number of scheduled subcarriers for initial PUSCH transmission of the i-th data block, N symb PUSCH(i)-initial is the number of SC-FDMA symbols for initial PUSCH transmission of the i-th data block, C (i) is the number of code blocks of the i-th data block, K r (i) is a size of r-th code block of the i-th data block, and r is an integer of 0 or higher.
3. The method according to claim 1 , wherein α=1, λ 1 =1, and λ 2 =1.
4. The method according to claim 1 , wherein the control information is acknowledgement/negative acknowledgement (ACK/NACK) or Rank Indicator (RI).
5. A user equipment for transmitting a signal in a wireless communication system, the user equipment comprising:
a radio frequency (RF) unit; and
a processor,
wherein the processor is configured to channel-encode control information, to generate the signal by performing channel interleaving, such that the channel encoded control information is multiplexed with a plurality of data blocks, and to transmit the signal to a base station, and
wherein the number of channel encoded symbols for the control information is determined using the following equation:
⌈
Payload
UCI
α
·
λ
1
·
N
RE_PUSCH
(
1
)
initial
·
λ
2
·
N
RE_PUSCH
(
2
)
initial
Payload
Data
(
1
)
·
λ
2
·
N
RE_PUSCH
(
2
)
initial
+
Payload
Data
(
2
)
·
λ
1
·
N
RE_PUSCH
(
1
)
initial
·
β
offset
PUSCH
⌉
where, Payload UCI is a size of the control information, Payload Data(1) is a size of a first data block, N RE — PUSCH(1) initial is the number of resource elements (REs) for initial PUSCH transmission of the first data block, Payload Data(2) is a size of a second data block, N RE — PUSCH(2) initial is the number of resource elements (REs) for initial PUSCH transmission of the second data block, β offset PUSCH is an offset value, α is an integer of 1 or higher, λ 1 is an integer of 1 or higher, and λ 2 is an integer of 1 or higher, and ┌ ┐ is a ceiling function.
6. The user equipment according to claim 5 , wherein:
N RE — PUSCH(i)initial is denoted by N RE — PUSCH(i) initial =M sc PUSCH(i)-initial ·N symb PUSCH(i)-initial , and a size of an i-th data block is denoted by
∑
r
=
0
C
i
-
1
K
r
i
,
where, M sc PUSCH(i)-initial is the number of scheduled subcarriers for initial PUSCH transmission of the i-th data block, N symb PUSCH(i)-initial is the number of SC-FDMA symbols for initial PUSCH transmission of the i-th data block, C (i) is the number of code blocks of the i-th data block, K r (i) is a size of r-th code block of the i-th data block, and r is an integer of 0 or higher.
7. The user equipment according to claim 5 , wherein α=1, λ 1 =1, and λ 2 =1.
8. The user equipment according to claim 5 , wherein the control information is acknowledgement/negative acknowledgement (ACK/NACK) or Rank Indicator (RI).
9. A method for transmitting a signal by a user equipment in a wireless communication system, the method comprising:
channel encoding, by the user equipment, control information;
generating, by the user equipment, the signal by performing channel interleaving such that the channel encoded control information is multiplexed with one of a plurality of data blocks; and
transmitting, by the user equipment, the signal to a base station,
wherein the number of channel encoded symbols for the control information is determined by the following equation:
α
·
⌈
Payload
UCI
·
N
RE_PUSCH
(
x
)
initial
·
β
offset
PUSCH
Payload
Data
(
x
)
⌉
where, α is an integer of 1 or higher, Payload UCI is a size of the control information, Payload Data(x) is a size of a data block x, N RE — PUSCH(x) initial is the number of resource elements (REs) for initial Physical Uplink Shared Channel (PUSCH) transmission of the data block x, β offset PUSCH is an offset value, and ┌ ┐ is a ceiling function, and
wherein the data block x denotes a data block having a highest Modulation and Coding Scheme (MCS) index for initial transmission from among the plurality of data blocks, and denotes a 1 st data block when the plurality of data blocks have a same MCS index for initial transmission.
10. The method according to claim 9 , wherein:
N RE — PUSCH(x) initial is denoted by N RE — PUSCH(x) initial =M sc PUSCH(x)-initial ·N symb PUSCH(x)-initial , and a size of the data block x is denoted by
∑
r
=
0
C
(
x
)
-
1
K
r
(
x
)
,
where, M sc PUSCH(x)-initial the number of scheduled subcarriers for initial PUSCH transmission of the data block x, N symb PUSCH(x)-initial is the number of SC-FDMA symbols for initial PUSCH transmission of the data block x, C (x) is the number of code blocks of the data block x, K r (x) is a size of r-th code block of the data block x, and r is an integer of 0 or higher.
11. The method according to claim 9 , wherein α=1.
12. The method according to claim 9 , wherein the control information includes information related to channel quality.
13. The method according to claim 9 , wherein the control information includes at least one of a Channel Quality Indicator (CQI) and a Precoding Matrix Indicator (PMI).
14. A user equipment for transmitting a signal comprising:
a radio frequency (RF) unit; and
a processor,
wherein the processor is configured to channel-encode control information, to generate the signal by performing channel interleaving, such that the channel encoded control information is multiplexed with a plurality of data blocks, and to transmit the signal to a base station,
wherein the number of channel encoded symbols for the control information is determined by the following equation:
α
·
⌈
Payload
UCI
·
N
RE_PUSCH
(
x
)
initial
·
β
offset
PUSCH
Payload
Data
(
x
)
⌉
where, α is an integer of 1 or higher, Payload UCI is a size of the control information, Payload Data(x) is a size of a data block x, N RE — PUSCH(x) initial is the number of resource elements (REs) for initial Physical Uplink Shared Channel (PUSCH) transmission of the data block x, β offset PUSCH is an offset value, and ┌ ┐ is a ceiling function, and
wherein the data block x denotes a data block having a highest Modulation and Coding Scheme (MCS) index for initial transmission from among the plurality of data blocks, and denotes a 1 st data block when the plurality of data blocks have a same MCS index for initial transmission.
15. The user equipment according to claim 14 , wherein:
N RE — PUSCH(x) initial is denoted by N RE — PUSCH(x) initial =M sc PUSCH(x)-initial ·N symb PUSCH(x)-initial , and a size of the data block x is denoted by
∑
r
=
0
C
(
x
)
-
1
K
r
(
x
)
,
where, M sc PUSCH(x)-initial is the number of scheduled subcarriers for initial PUSCH transmission of the data block x, N symb PUSCH(x)-initial is the number of SC-FDMA symbols for initial PUSCH transmission of the data block x, C (x) is the number of code blocks of the data block x, K r (x) is a size of r-th code block of the data block x, and r is an integer of 0 or higher.
16. The user equipment according to claim 14 , wherein α=1.
17. The user equipment according to claim 14 , wherein the control information includes information related to channel quality.
18. The user equipment according to claim 14 , wherein the control information includes at least one of a Channel Quality Indicator (CQI) and a Precoding Matrix Indicator (PMI).