Codebook indication method and apparatus, and storage medium
View Patent ↗Embodiments of the present disclosure provide a codebook indication method and apparatus, and a storage medium. The method comprises: sending codebook indication information to a network side device, the codebook indication information including at least one of the following information of at least one transmission layer: port selection indication information, strongest coefficient indication information, or frequency domain base vector indication information. In the embodiments of the present disclosure, by indicating at least one of the port selection of at least one transmission layer, the strongest coefficient of a combined coefficient matrix, and the frequency domain basis vector, the feedback overhead of indication of some ports, the feedback overhead of the strongest coefficient indication, and the overhead of the frequency domain base vector indication can be reduced, compared with the traditional independent indication of each layer.
1 . A codebook indication method, the method comprising:
transmitting codebook indication information to a network-side device, the codebook indication information comprising strongest coefficient indication information of at least one transmission layer;
wherein
for l-th transmission layer, the strongest coefficient indication information comprises ┌log 2 K l,0 ┐ bits of information, the ┌log 2 K l,0 ┐ bits of information being used to indicate a target strongest coefficient in non-zero coefficients for the l-th transmission layer, wherein K l,0 is a number of non-zero coefficients selected by a terminal-side device; or,
for l-th transmission layer, the strongest coefficient indication information comprises ┌log 2 M l ┐ bits of information and ┌log 2 K l,1 ┐ bits of information, the ┌log 2 M l ┐ bits of information and the ┌log 2 K l,1 ┐ bits of information being used to jointly indicate a target strongest coefficient for the l-th transmission layer in non-zero coefficients, wherein K l,1 is a number of ports selected by a terminal-side device, ┌log 2 M l ┐ is used to indicate a frequency domain basis vector corresponding to the target strongest coefficient, and M l is a number of frequency domain basis vectors selected by the terminal-side device; or,
for l-th transmission layer, the strongest coefficient indication information comprises ┌log 2 K l,1 ┐ bits of information, the ┌log 2 K l,1 ┐ bits of information being used to indicate a target strongest coefficient for the l-th transmission layer in non-zero coefficients, wherein K l,1 is a number of ports selected by a terminal-side device.
2 . The codebook indication method of claim 1 , wherein th codebook indication information further comprises port selection indication information of the at least one transmission layer and wherein the port selection indication information comprises first information and second information;
when two polarization directions selected by the terminal-side device correspond to same ports, the first information is used to indicate an intersection of ports corresponding to each transmission layer in one polarization direction; and the second information is used to indicate remaining ports other than the intersection among ports corresponding to each transmission layer in one polarization direction; or,
when two polarization directions selected by the terminal-side device correspond to different ports, the first information is used to indicate an intersection of ports corresponding to each transmission layer in the two polarization directions; and the second information is used to indicate remaining ports other than the intersection among ports corresponding to each transmission layer in the two polarization directions.
3 . The codebook indication method of claim 2 , wherein the first information is indicated by a combination number with a size of
⌈
log
2
(
P
K
)
⌉
bits; or, the first information is indicated by a bitmap with a size of P bits;
when the two polarization directions selected by the terminal-side device correspond to the same ports, P=X/2; when the two polarization directions selected by the terminal-side device correspond to the different ports, P=X; X is the number of ports configured by the network-side device for the terminal-side device; K is the number of elements in the intersection; and,
the second information is indicated by a combination number with a size of
⌈
log
2
(
P
-
K
K
l
,
1
-
K
)
⌉
bits; or, the second information is indicated by a bitmap with a size of P−K bits;
when the two polarization directions selected by the terminal-side device correspond to the same ports,
K
l
,
1
=
P
l
′
2
;
when the two polarization directions selected by the terminal-side device correspond to the different ports, K l,1 =P l ′; P l ′ is the number of ports selected by the terminal-side device for l-th transmission layer.
4 . The codebook indication method of claim 1 , wherein the codebook indication information further comprises frequency domain basis vector indication information of the at least one transmission layer; wherein
for l-th transmission layer, the frequency domain basis vector indication information comprises
⌈
log
2
(
2
N
-
1
M
l
-
1
)
⌉
bits, wherein N is a number of frequency domain basis vectors configured by the network-side device for the terminal-side device, and M l is a number of frequency domain basis vectors selected by the terminal-side device; or,
for l-th transmission layer, the frequency domain basis vector indication information is indicated by a bitmap of size 2N−1 bits, wherein N is a number of frequency domain basis vectors configured by the network-side device for the terminal-side device; or,
for l-th transmission layer, the frequency domain basis vector indication information comprises
⌈
log
2
(
N
-
1
M
l
-
1
)
⌉
bits of information and ┌log 2 N┐ bits of information, the ┌log 2 N┐ bits of information being used to indicate a frequency domain basis vector corresponding to a strongest coefficient, wherein N is a number of frequency domain basis vectors configured by the network-side device for the terminal-side device, and M l is a number of frequency domain basis vectors selected by the terminal-side device; or,
for l-th transmission layer, the frequency domain basis vector indication information is indicated by a bitmap with a size of N−1 bits and ┌log 2 N┐ bits of information, the ┌log 2 N┐ bits of information being used to indicate a frequency domain basis vector corresponding to a strongest coefficient, wherein Nis a number of frequency domain basis vectors configured by the network-side device for the terminal-side device; or,
for l-th transmission layer, the frequency domain basis vector indication information comprises
⌈
log
2
(
N
M
l
)
⌉
bits, wherein N is a number of frequency domain basis vectors configured by the network-side device for the terminal-side device, and M l is a number of frequency domain basis vectors selected by the terminal-side device; or,
for l-th transmission layer, the frequency domain basis vector indication information is indicated by a bitmap with a size of N bits, wherein N is a number of frequency domain basis vectors configured by the network-side device for the terminal-side device.
5 . The codebook indication method of claim 4 , wherein the frequency domain basis vector indication information comprises third information and fourth information;
the third information is used to indicate an intersection of frequency domain basis vectors corresponding to each transmission layer; and the fourth information is used to indicate remaining frequency domain basis vectors other than the intersection among frequency domain basis vectors corresponding to each transmission layer; or,
the third information is used to indicate a union of frequency domain basis vectors corresponding to each transmission layer; and the fourth information is used to indicate the frequency domain basis vectors corresponding to each transmission layer.
6 . A codebook indication apparatus, the apparatus comprising: a memory; a transceiver; and a processor;
the memory, used to store computer programs; the transceiver, used to transmit and receive data under control of the processor; and the processor, used to read the computer programs in the memory and perform:
transmitting codebook indication information to a network-side device, the codebook indication information comprising strongest coefficient indication information of at least one transmission layer;
wherein
for l-th transmission layer, the strongest coefficient indication information comprises ┌log 2 K l,0 ┐ bits of information, the ┌log 2 K l,0 ┐ bits of information being used to indicate a target strongest coefficient in non-zero coefficients for the l-th transmission layer, wherein K l,0 is a number of non-zero coefficients selected by a terminal-side device; or,
for l-th transmission layer, the strongest coefficient indication information comprises ┌log 2 M l ┐ bits of information and ┌log 2 K l,1 ┐ bits of information, the ┌log 2 M l ┐ bits of information and the ┌log 2 K l,1 ┐ bits of information being used to jointly indicate a target strongest coefficient for the I-th transmission layer in non-zero coefficients, wherein K l,1 is a number of ports selected by a terminal-side device, ┌log 2 M l ┐ is used to indicate a frequency domain basis vector corresponding to the target strongest coefficient, and M l is a number of frequency domain basis vectors selected by the terminal-side device; or,
for l-th transmission layer, the strongest coefficient indication information comprises ┌log 2 K l,1 ┐ bits of information, the ┌log 2 K l,1 ┐ bits of information being used to indicate a target strongest coefficient for the I-th transmission layer in non-zero coefficients, wherein K l,1 is a number of ports selected by a terminal-side device.
7 . The codebook indication apparatus of claim 6 , wherein the codebook indication information further comprises port se indication information of the at least one transmission layer and wherein the port selection indication information comprises first information and second information;
when two polarization directions selected by the terminal-side device correspond to same ports, the first information is used to indicate an intersection of ports corresponding to each transmission layer in one polarization direction; and the second information is used to indicate remaining ports other than the intersection among ports corresponding to each transmission layer in one polarization direction; or,
when two polarization directions selected by the terminal-side device correspond to different ports, the first information is used to indicate an intersection of ports corresponding to each transmission layer in the two polarization directions; and the second information is used to indicate remaining ports other than the intersection among ports corresponding to each transmission layer in the two polarization directions.
8 . The codebook indication apparatus of claim 7 , wherein the first information is indicated by a combination number with a size of
⌈
log
2
(
P
K
)
⌉
bits; or, the first information is indicated by a bitmap with a size of P bits;
when the two polarization directions selected by the terminal-side device correspond to the same ports, P=X/2; when the two polarization directions selected by the terminal-side device correspond to the different ports, P=X; X is the number of ports configured by the network-side device for the terminal-side device; K is the number of elements in the intersection;
and,
the second information is indicated by a combination number with a size of
⌈
log
2
(
P
-
K
K
l
,
1
-
K
)
⌉
bits; or, the second information is indicated by a bitmap with a size of P−K bits;
when the two polarization directions selected by the terminal-side device correspond to the same ports,
K
l
,
1
=
P
l
′
2
;
when the two polarization directions selected by the terminal-side device correspond to the different ports, K l,1 =P l ′; P l ′ is the number of ports selected by the terminal-side device for l-th transmission layer.
9 . The codebook indication apparatus of claim 6 , wherein the codebook indication information further comprises frequency domain basis vector indication information of the at least one transmission layer; wherein
for l-th transmission layer, the frequency domain basis vector indication information comprises
⌈
log
2
(
2
N
-
1
M
l
-
1
)
⌉
bits, wherein Nis a number of frequency domain basis vectors configured by the network-side device for the terminal-side device, and M l is a number of frequency domain basis vectors selected by the terminal-side device; or,
for l-th transmission layer, the frequency domain basis vector indication information is indicated by a bitmap of size 2N−1 bits, wherein N is a number of frequency domain basis vectors configured by the network-side device for the terminal-side device; or,
for l-th transmission layer, the frequency domain basis vector indication information comprises
⌈
log
2
(
N
-
1
M
l
-
1
)
⌉
bits of information and ┌log 2 N┐ bits of information, the ┌log 2 N┐ bits of information being used to indicate a frequency domain basis vector corresponding to a strongest coefficient, wherein N is a number of frequency domain basis vectors configured by the network-side device for the terminal-side device, and M l is a number of frequency domain basis vectors selected by the terminal-side device; or,
for l-th transmission layer, the frequency domain basis vector indication information is indicated by a bitmap with a size of N−1 bits and ┌log 2 N┐ bits of information, the ┌log 2 N┐ bits of information being used to indicate a frequency domain basis vector corresponding to a strongest coefficient, wherein N is a number of frequency domain basis vectors configured by the network-side device for the terminal-side device; or,
for l-th transmission layer, the frequency domain basis vector indication information comprises
⌈
log
2
(
N
M
l
)
⌉
bits, wherein N is a number of frequency domain basis vectors configured by the network-side device for the terminal-side device, and M l is a number of frequency domain basis vectors selected by the terminal-side device; or,
for l-th transmission layer, the frequency domain basis vector indication information is indicated by a bitmap with a size of N bits, wherein N is a number of frequency domain basis vectors configured by the network-side device for the terminal-side device.
10 . The codebook indication apparatus of claim 9 , wherein the frequency domain basis vector indication information comprises third information and fourth information;
the third information is used to indicate an intersection of frequency domain basis vectors corresponding to each transmission layer; and the fourth information is used to indicate remaining frequency domain basis vectors other than the intersection among frequency domain basis vectors corresponding to each transmission layer; or,
the third information is used to indicate a union of frequency domain basis vectors corresponding to each transmission layer; and the fourth information is used to indicate the frequency domain basis vectors corresponding to each transmission layer.
11 . A non-transitory processor-readable storage medium, storing a computer program, wherein the computer program, when executed by a processor, causes the processor to perform:
transmitting codebook indication information to a network-side device, the codebook indication information comprising strongest coefficient indication information of at least one transmission layer;
wherein
for l-th transmission layer, the strongest coefficient indication information comprises ┌log 2 K l,0 ┐ bits of information, the ┌log 2 K l,0 ┐ bits of information being used to indicate a target strongest coefficient in non-zero coefficients for the l-th transmission layer, wherein K l,0 is a number of non-zero coefficients selected by a terminal-side device; or,
for l-th transmission layer, the strongest coefficient indication information comprises ┌log 2 M l ┐ bits of information and ┌log 2 K l,1 ┐ bits of information, the ┌log 2 M l ┐ bits of information and the log 2 K l,1 ┐ bits of information being used to jointly indicate a target strongest coefficient for the l-th transmission layer in non-zero coefficients, wherein K l,1 is a number of ports selected by a terminal-side device, ┌log 2 M l ┐ is used to indicate a frequency domain basis vector corresponding to the target strongest coefficient, and M l is a number of frequency domain basis vectors selected by the terminal-side device; or,
for l-th transmission layer, the strongest coefficient indication information comprises ┌log 2 K l,1 ┐ bits of information, the ┌log 2 K l,1 ┐ bits of information being used to indicate a target strongest coefficient for the I-th transmission layer in non-zero coefficients, wherein K l,1 is a number of ports selected by a terminal-side device.
12 . The non-transitory processor-readable storage medium of claim 11 , wherein the codebook indication information further comprises frequency domain basis vector indication information of the at least one transmission layer; wherein
for l-th transmission layer, the frequency domain basis vector indication information comprises
⌈
log
2
(
2
N
-
1
M
l
-
1
)
⌉
bits, wherein N is a number of frequency domain basis vectors configured by the network-side device for the terminal-side device, and M l is a number of frequency domain basis vectors selected by the terminal-side device; or,
for l-th transmission layer, the frequency domain basis vector indication information is indicated by a bitmap of size 2N−1 bits, wherein N is a number of frequency domain basis vectors configured by the network-side device for the terminal-side device; or,
for l-th transmission layer, the frequency domain basis vector indication information comprises
⌈
log
2
(
N
-
1
M
l
-
1
)
⌉
bits of information and ┌log 2 N┐ bits of information, the ┌log 2 N┐ bits of information being used to indicate a frequency domain basis vector corresponding to a strongest coefficient, wherein N is a number of frequency domain basis vectors configured by the network-side device for the terminal-side device, and M l is a number of frequency domain basis vectors selected by the terminal-side device; or,
for l-th transmission layer, the frequency domain basis vector indication information is indicated by a bitmap with a size of N−1 bits and ┌log 2 N┐ bits of information, the ┌log 2 N┐ bits of information being used to indicate a frequency domain basis vector corresponding to a strongest coefficient, wherein N is a number of frequency domain basis vectors configured by the network-side device for the terminal-side device; or,
for l-th transmission layer, the frequency domain basis vector indication information comprises
⌈
log
2
(
N
M
l
)
⌉
bits, wherein N is a number of frequency domain basis vectors configured by the network-side device for the terminal-side device, and M l is a number of frequency domain basis vectors selected by the terminal-side device; or,
for l-th transmission layer, the frequency domain basis vector indication information is indicated by a bitmap with a size of N bits, wherein N is a number of frequency domain basis vectors configured by the network-side device for the terminal-side device.