Method and apparatus for uplink signal transmission based on codebook in a wireless communication system
A method in which a UE transmits an uplink signal, based on a codebook, in a wireless communication system includes: receiving downlink control information (DCI) for determining a precoding matrix, which is applied to transmission of the uplink signal, from a base station; determining a precoding matrix that is applied to transmission of the uplink signal from a codebook subset related to transmission of the uplink signal, based on the DCI; and transmitting the uplink signal to the base station, based on the determined precoding matrix, in which, based on that differences of phase values applied to antenna ports for transmitting the uplink signal are changed in all pairs of antenna ports, the codebook subset includes at least one specific precoding matrix for full power transmission.
1. A method in which a user equipment (UE) transmits an uplink signal, based on a codebook, in a wireless communication system, the method comprising:
receiving, from a base station, downlink control information (DCI) for determining a precoding matrix, which is applied to transmission of the uplink signal;
determining, based on the DCI, a precoding matrix that is applied to transmission of the uplink signal, wherein the precoding matrix is determined from a codebook subset related to transmission of the uplink signal; and
transmitting the uplink signal to the base station, based on the determined precoding matrix,
wherein, based on that a parameter related to the codebook subset is set to nonCoherent, the codebook subset includes at least one specific precoding matrix for full power transmission,
wherein the at least one specific precoding matrix is related to rank 1 uplink transmission using 2 antenna ports,
wherein the codebook includes a first codebook for a rank 1 using the 2 antenna ports,
wherein the first codebook is determined by the following table,
TPMI
W
index
(ordered from left to right in increasing order of TPMI index)
0-5
1
2
[
1
0
]
1
2
[
0
1
]
1
2
[
1
1
]
1
2
[
1
-
1
]
1
2
[
1
j
]
1
2
[
1
-
j
]
—
—
wherein the at least one specific precoding matrix is a precoding matrix whose the TPMI index is 2, among precoding matrices included in the first codebook,
wherein the codebook subset further includes another precoding matrices related to the rank 1 using the 2 antenna ports with the TPMI index of 0 and 1, among precoding matrices included in the first codebook. .
2. The method of claim 1 , wherein the codebook further includes a second codebook for rank 2 using 2 antenna ports, and
wherein the second codebook is determined by the following table.
TPMI
W
index
(ordered from left to right in increasing order of TPMI index)
0-2
1
2
[
1
0
0
1
]
1
2
[
1
1
1
-
1
]
1
2
[
1
1
j
-
j
]
3. The method of claim 2 , wherein the codebook subset further includes another precoding matrix related to the rank 2 using the 2 antenna ports, and
wherein the another precoding matrix related to the rank 2 using the 2 antenna ports includes a precoding matrix whose the TPMI index is 0, among the precoding matrices included in the second codebook.
4. The method of claim 1 , further comprising:
transmitting, to the base station, capability information on UE capability related to coherence for the uplink signal transmission; and
receiving, from the base station, configuration information for determining the codebook subset, based on the capability information,
wherein the codebook subset is set to nonCoherent based on the configuration information.
5. The method of claim 4 , wherein the UE capability related to the coherence is the nonCoherent, and
wherein the UE capability of the nonCoherent is that differences between phase values applied to antenna ports for transmitting the uplink signal are changed in all pairs of antenna ports.
6. A method in which a user equipment (UE) transmits an uplink signal, based on a codebook, in a wireless communication system, the method comprising:
receiving, from a base station, downlink control information (DCI) for determining a precoding matrix, which is applied to transmission of the uplink signal;
determining, based on the DCI, a precoding matrix that is applied to transmission of the uplink signal, wherein the precoding matrix is determined from a codebook subset related to transmission of the uplink signal; and
transmitting the uplink signal to the base station, based on the determined precoding matrix,
wherein, based on that a parameter related to the codebook subset is set to nonCoherent, the codebook subset includes at least one specific precoding matrix for full power transmission,
wherein the at least one specific precoding matrix is related to rank 1 uplink transmission using 4 antenna ports,
wherein the codebook includes a first codebook for a rank 1 using the 4 antenna ports,
wherein the first codebook is determined by one of the following tables,
W
TPMI index
(ordered from left to right in increasing order of TPMI index)
0-7
1
2
[
1
0
0
0
]
1
2
[
0
1
0
0
]
1
2
[
0
0
1
0
]
1
2
[
0
0
0
1
]
1
2
[
1
0
1
0
]
1
2
[
1
0
-
1
0
]
1
2
[
1
0
j
0
]
1
2
[
1
0
-
j
0
]
8-15
1
2
[
0
1
0
1
]
1
2
[
0
1
0
-
1
]
1
2
[
0
1
0
j
]
1
2
[
0
1
0
-
j
]
1
2
[
1
1
1
-
1
]
1
2
[
1
1
j
j
]
1
2
[
1
1
-
1
1
]
1
2
[
1
1
-
j
-
j
]
16-23
1
2
[
1
j
1
j
]
1
2
[
1
j
j
1
]
1
2
[
1
j
-
1
-
j
]
1
2
[
1
j
-
j
-
1
]
1
2
[
1
-
1
1
1
]
1
2
[
1
-
1
j
-
j
]
1
2
[
1
-
1
-
1
-
1
]
1
2
[
1
-
1
-
j
j
]
24-27
1
2
[
1
-
j
1
-
j
]
1
2
[
1
-
j
j
-
1
]
1
2
[
1
-
j
-
1
j
]
1
2
[
1
-
j
-
j
1
]
—
—
—
—
TABLE
W
TPMI index
(ordered from left to right in increasing order of TPMI index)
0-7
1
2
[
1
0
0
0
]
1
2
[
0
1
0
0
]
1
2
[
0
0
1
0
]
1
2
[
0
0
0
1
]
1
2
[
1
0
1
0
]
1
2
[
1
0
-
1
0
]
1
2
[
1
0
j
0
]
1
2
[
1
0
-
j
0
]
8-15
1
2
[
0
1
0
1
]
1
2
[
0
1
0
-
1
]
1
2
[
0
1
0
j
]
1
2
[
0
1
0
-
j
]
1
2
[
1
1
1
1
]
1
2
[
1
1
j
j
]
1
2
[
1
1
-
1
-
1
]
1
2
[
1
1
-
j
-
j
]
16-23
1
2
[
1
j
1
j
]
1
2
[
1
j
j
-
1
]
1
2
[
1
j
-
1
-
j
]
1
2
[
1
j
-
j
1
]
1
2
[
1
-
1
1
-
1
]
1
2
[
1
-
1
j
-
j
]
1
2
[
1
-
1
-
1
1
]
1
2
[
1
-
1
-
j
j
]
24-27
1
2
[
1
-
j
1
-
j
]
1
2
[
1
-
j
j
1
]
1
2
[
1
-
j
-
1
j
]
1
2
[
1
-
j
-
j
-
1
]
—
—
—
—
wherein among the at least one specific precoding matrix, a precoding matrix related to the rank 1 using the 4 antenna ports is a precoding matrix whose the TPMI index is 13, among precoding matrices included in the first codebook,
wherein the at least one specific precoding matrix is further related to rank 2 uplink transmission using the 4 antenna ports,
wherein the codebook further includes a second codebook for a rank 2 using the 4 antennas,
wherein the second codebook is determined by the following able,
TPMI
W
index
(ordered from left to right in increasing order of TPMI index)
0-3
1
2
[
1
0
0
1
0
0
0
0
]
1
2
[
1
0
0
0
0
1
0
0
]
1
2
[
1
0
0
0
0
0
0
1
]
1
2
[
0
0
1
0
0
1
0
0
]
4-7
1
2
[
0
0
1
0
0
0
0
1
]
1
2
[
0
0
0
0
1
0
0
1
]
1
2
[
1
0
0
1
1
0
0
-
j
]
1
2
[
1
0
0
1
1
0
0
j
]
8-11
1
2
[
1
0
0
1
-
j
0
0
1
]
1
2
[
1
0
0
1
-
j
0
0
-
1
]
1
2
[
1
0
0
1
-
1
0
0
-
j
]
1
2
[
1
0
0
1
-
1
0
0
j
]
12-15
1
2
[
1
0
0
1
j
0
0
1
]
1
2
[
1
0
0
1
j
0
0
-
1
]
1
2
2
[
1
1
1
1
1
-
1
1
-
1
]
1
2
2
[
1
1
1
1
j
-
j
j
-
j
]
16-19
1
2
2
[
1
1
j
j
1
-
1
j
-
j
]
1
2
2
[
1
1
j
j
j
-
j
-
1
1
]
1
2
2
[
1
1
-
1
-
1
1
-
1
-
1
1
]
1
2
2
[
1
1
-
1
-
1
j
-
j
-
j
j
]
20-21
1
2
2
[
1
1
-
j
-
j
1
-
1
-
j
j
]
1
2
2
[
1
1
-
j
-
j
j
-
j
1
-
1
]
—
—
wherein among the at least one specific precoding matrix, a precoding matrix related to the rank 2 using the 4 antenna ports is a precoding matrix whose the TPMI index is 6, among the precoding matrices included in the second codebook,
wherein the at least one specific precoding matrix is further related to rank 3 uplink transmission using the 4 antenna ports,
wherein the codebook further includes a third codebook for a rank 3 using four antennas,
wherein the third codebook is determined by the following table,
TPMI
W
index
(ordered from left to right in increasing order of TPMI index)
0-3
1
2
[
1
0
0
0
1
0
0
0
1
0
0
0
]
1
2
[
1
0
0
0
1
0
1
0
0
0
0
1
]
1
2
[
1
0
0
0
1
0
-
1
0
0
0
0
1
]
1
2
3
[
1
1
1
1
-
1
1
1
1
-
1
1
-
1
-
1
]
4-6
1
2
3
[
1
1
1
1
-
1
1
j
j
-
j
j
-
j
-
j
]
1
2
3
[
1
1
1
-
1
1
-
1
1
1
-
1
-
1
1
1
]
1
2
3
[
1
1
1
-
1
1
-
1
j
j
-
j
-
j
j
j
]
—
wherein among the at least one specific precoding matrix, a precoding matrix related to the rank 3 using the 4 antenna ports is a precoding matrix whose the TPMI index is 1, among the precoding matrices included in the third codebook,
wherein the codebook subset further includes (i) another precoding matrices related to the rank 1 using the 4 antenna ports, (ii) another precoding matrices related to the rank 2 using the 4 antenna ports and (iii) another precoding matrix related to the rank 3 using the 4 antenna ports,
wherein the another precoding matrices related to the rank 1 using the 4 antenna ports includes precoding matrices whose the TPMI index are 0-3, among the precoding matrices included in the first codebook,
wherein the another precoding matrices related to the rank 2 using the 4 antenna ports includes precoding matrices whose the TPMI index are 0-5, among the precoding matrices included in the second codebook, and
wherein the another precoding matrix related to the rank 3 using the 4 antenna ports is a precoding matrices whose the TPMI index is 0, among the precoding matrices included in the third codebook.
7. The method of claim 6 , wherein the codebook further includes a fourth codebook for rank 4 using 4 antenna ports, and
wherein the fourth codebook is determined by the following table.
TPMI
W
index
(ordered from left to right in increasing order of TPMI index)
0-3
1
2
[
1
0
0
0
0
1
0
0
0
0
1
0
0
0
0
1
]
1
2
2
[
1
1
0
0
0
0
1
1
1
-
1
0
0
0
0
1
-
1
]
1
2
2
[
1
1
0
0
0
0
1
1
j
-
j
0
0
0
0
j
-
j
]
1
4
[
1
1
1
1
1
-
1
1
-
1
1
1
-
1
-
1
1
-
1
-
1
1
]
4
1
4
[
1
1
1
1
1
-
1
1
-
1
j
j
-
j
-
j
j
-
j
-
j
j
]
—
—
—
8. The method of claim 7 , wherein the codebook subset further includes another precoding matrix related to the rank 4 using the 4 antenna ports, and
wherein the another precoding matrix related to the rank 4 using the 4 antenna ports is a precoding matrix whose the TPMI index is 0, among the precoding matrices included in the fourth codebook.
9. The method of claim 6 , further comprising:
transmitting, to the base station, capability information on UE capability related to coherence for the uplink signal transmission; and
receiving, from the base station, configuration information for determining the codebook subset, based on the capability information,
wherein the codebook subset is set to nonCoherent based on the configuration information.
10. The method of claim 9 , wherein the UE capability related to the coherence is the nonCoherent, and
wherein the UE capability of the nonCoherent is that differences between phase values applied to antenna ports for transmitting the uplink signal are changed in all pairs of antenna ports.
11. A user equipment (UE) configured to transmit an uplink signal, based on a codebook, in a wireless communication system, the UE comprising:
a transmitter;
a receiver; and
a processor functionally connected with the transmitter and the receiver,
wherein the processor is configured to:
control the receiver to receive, from a base station, downlink control information (DCI) for determining a precoding matrix, which is applied to transmission of the uplink signal;
determine, based on the DCI, a precoding matrix that is applied to transmission of the uplink signal, wherein the precoding matrix is determined from a codebook subset related to transmission of the uplink signal; and
control the transmitter to transmit the uplink signal to the base station, based on the determined precoding matrix,
wherein, based on that a parameter related to the codebook subset is set to nonCoherent, the codebook subset includes at least one specific precoding matrix for full power transmission, wherein the at least one specific precoding matrix is related to rank 1 uplink transmission using 2 antenna ports,
wherein the codebook includes a first codebook for a rank 1 using the 2 antenna ports,
wherein the first codebook is determined by the following table,
TPMI
W
index
(ordered from left to right in increasing order of TPMI index)
0-5
1
2
[
1
0
]
1
2
[
0
1
]
1
2
[
1
1
]
1
2
[
1
-
1
]
1
2
[
1
j
]
1
2
[
1
-
j
]
—
—
wherein the at least one specific precoding matrix is a precoding matrix whose the TPMI index is 2, among precoding matrices included in the first codebook,
wherein the codebook subset further includes another precoding matrices related to the rank 1 using the 2 antenna ports, with the TPMI index of 0 and 1, among precoding matrices included in the first codebook.
12. A user equipment (UE) configured to transmit an uplink signal, based on a codebook, in a wireless communication system, the UE comprising:
a transmitter;
a receiver; and
a processor functionally connected with the transmitter and the receiver,
wherein the processor is configured to:
control the receiver to receive, from a base station, downlink control information (DCI) for determining a precoding matrix, which is applied to transmission of the uplink signal;
determine, based on the DCI, a precoding matrix that is applied to transmission of the uplink signal, wherein the precoding matrix is determined from a codebook subset related to transmission of the uplink signal; and
control the transmitter to transmit the uplink signal to the base station, based on the determined precoding matrix,
wherein, based on that a parameter related to the codebook subset is set to nonCoherent, the codebook subset includes at least one specific precoding matrix for full power transmission,
wherein the at least one specific precoding matrix is related to rank 1 uplink transmission using 4 antenna ports,
wherein the codebook includes a first codebook for a rank 1 using the 4 antenna ports,
wherein the first codebook is determined by one of the following tables,
W
TPMI index
(ordered from left to right in increasing order of TPMI index)
0-7
1
2
[
1
0
0
0
]
1
2
[
0
1
0
0
]
1
2
[
0
0
1
0
]
1
2
[
0
0
0
1
]
1
2
[
1
0
1
0
]
1
2
[
1
0
-
1
0
]
1
2
[
1
0
j
0
]
1
2
[
1
0
-
j
0
]
8-15
1
2
[
0
1
0
1
]
1
2
[
0
1
0
-
1
]
1
2
[
0
1
0
j
]
1
2
[
0
1
0
-
j
]
1
2
[
1
1
1
-
1
]
1
2
[
1
1
j
j
]
1
2
[
1
1
-
1
1
]
1
2
[
1
1
-
j
-
j
]
16-23
1
2
[
1
j
1
j
]
1
2
[
1
j
j
1
]
1
2
[
1
j
-
1
-
j
]
1
2
[
1
j
-
j
-
1
]
1
2
[
1
-
1
1
1
]
1
2
[
1
-
1
j
-
j
]
1
2
[
1
-
1
-
1
-
1
]
1
2
[
1
-
1
-
j
j
]
24-27
1
2
[
1
-
j
1
-
j
]
1
2
[
1
-
j
j
-
1
]
1
2
[
1
-
j
-
1
j
]
1
2
[
1
-
j
-
j
1
]
—
—
—
—
W
TPMI index
(ordered from left to right in increasing order of TPMI index)
0-7
1
2
[
1
0
0
0
]
1
2
[
0
1
0
0
]
1
2
[
0
0
1
0
]
1
2
[
0
0
0
1
]
1
2
[
1
0
1
0
]
1
2
[
1
0
-
1
0
]
1
2
[
1
0
j
0
]
1
2
[
1
0
-
j
0
]
8-15
1
2
[
0
1
0
1
]
1
2
[
0
1
0
-
1
]
1
2
[
0
1
0
j
]
1
2
[
0
1
0
-
j
]
1
2
[
1
1
1
1
]
1
2
[
1
1
j
j
]
1
2
[
1
1
-
1
-
1
]
1
2
[
1
1
-
j
-
j
]
16-23
1
2
[
1
j
1
j
]
1
2
[
1
j
j
-
1
]
1
2
[
1
j
-
1
-
j
]
1
2
[
1
j
-
j
1
]
1
2
[
1
-
1
1
-
1
]
1
2
[
1
-
1
j
-
j
]
1
2
[
1
-
1
-
1
1
]
1
2
[
1
-
1
-
j
j
]
24-27
1
2
[
1
-
j
1
-
j
]
1
2
[
1
-
j
j
1
]
1
2
[
1
-
j
-
1
j
]
1
2
[
1
-
j
-
j
-
1
]
—
—
—
—
wherein among the at least one specific precoding matrix, a precoding matrix related to the rank 1 using the 4 antenna ports is a precoding matrix whose the TPMI index is 13, among precoding matrices included in the first codebook,
wherein the at least one specific precoding matrix is further related to rank 2 uplink transmission using the 4 antenna ports,
wherein the codebook further includes a second codebook for a rank 2 using the 4 antennas, wherein the second codebook is determined by the following table,
TPMI
W
index
(ordered from left to right in increasing order of TPMI index)
0-3
1
2
[
1
0
0
1
0
0
0
0
]
1
2
[
1
0
0
0
0
1
0
0
]
1
2
[
1
0
0
0
0
0
0
1
]
1
2
[
0
0
1
0
0
1
0
0
]
4-7
1
2
[
0
0
1
0
0
0
0
1
]
1
2
[
0
0
0
0
1
0
0
1
]
1
2
[
1
0
0
1
1
0
0
-
j
]
1
2
[
1
0
0
1
1
0
0
j
]
8-11
1
2
[
1
0
0
1
-
j
0
0
1
]
1
2
[
1
0
0
1
-
j
0
0
-
1
]
1
2
[
1
0
0
1
-
1
0
0
-
j
]
1
2
[
1
0
0
1
-
1
0
0
j
]
12-15
1
2
[
1
0
0
1
j
0
0
1
]
1
2
[
1
0
0
1
j
0
0
-
1
]
1
2
2
[
1
1
1
1
1
-
1
1
-
1
]
1
2
2
[
1
1
1
1
j
-
j
j
-
j
]
16-19
1
2
2
[
1
1
j
j
1
-
1
j
-
j
]
1
2
2
[
1
1
j
j
j
-
j
-
1
1
]
1
2
2
[
1
1
-
1
-
1
1
-
1
-
1
1
]
1
2
2
[
1
1
-
1
-
1
j
-
j
-
j
j
]
20-21
1
2
2
[
1
1
-
j
-
j
1
-
1
-
j
j
]
1
2
2
[
1
1
-
j
-
j
j
-
j
1
-
1
]
—
—
wherein among the at least one specific precoding matrix, a precoding matrix related to the rank 2 using the 4 antenna ports is a precoding matrix whose the TPMI index is 6, among the precoding matrices included in the second codebook,
wherein the at least one specific precoding matrix is further related to rank 3 uplink transmission using the 4 antenna ports,
wherein the codebook further includes a third codebook for a rank 3 using four antennas,
wherein the third codebook is determined by the following table,
TPMI
W
index
(ordered from left to right in increasing order of TPMI index)
0-3
1
2
[
1
0
0
0
1
0
0
0
1
0
0
0
]
1
2
[
1
0
0
0
1
0
1
0
0
0
0
1
]
1
2
[
1
0
0
0
1
0
-
1
0
0
0
0
1
]
1
2
3
[
1
1
1
1
-
1
1
1
1
-
1
1
-
1
-
1
]
4-6
1
2
3
[
1
1
1
1
-
1
1
j
j
-
j
j
-
j
-
j
]
1
2
3
[
1
1
1
-
1
1
-
1
1
1
-
1
-
1
1
1
]
1
2
3
[
1
1
1
-
1
1
-
1
j
j
-
j
-
j
j
j
]
—
wherein among the at least one specific precoding matrix, a precoding matrix related to the rank 3 using the 4 antenna ports is a precoding matrix whose the TPMI index is 1, among the precoding matrices included in the third codebook,
wherein the codebook subset further includes (i) another precoding matrices related to the rank 1 using the 4 antenna ports, (ii) another precoding matrices related to the rank 2 using the 4 antenna ports and (iii) another precoding matrix related to the rank 3 using the 4 antenna ports,
wherein the another precoding matrices related to the rank 1 using the 4 antenna ports includes precoding matrices whose the TPMI index are 0-3, among the precoding matrices included in the first codebook,
wherein the another precoding matrices related to the rank 2 using the 4 antenna ports includes precoding matrices whose the TPMI index are 0-5, among the precoding matrices included in the second codebook, and
wherein the another precoding matrix related to the rank 3 using the 4 antenna ports is a precoding matrices whose the TPMI index is 0, among the precoding matrices included in the third codebook.