SRS transmission method, device and system, storage medium, and electronic device
A Sounding Reference Signal (SRS) transmission method, device and system, a storage medium, and an electronic device are provided. The method includes: receiving configuration information sent by a first communication node via signaling, and transmitting an SRS to the first communication node based on the configuration information; or, transmitting an SRS to a first communication node according to a rule agreed upon with the first communication node.
1 . A Sounding Reference Signal (SRS) transmission method, comprising:
transmitting an SRS to a first communication node according to a rule agreed upon with the first communication node;
wherein the rule agreed upon with the first communication node comprises at least one of:
in a case where the SRS is an aperiodic SRS, an SRS transmission number is n SRS calculated as: n SRS =└└l′/R┘/R partial ┘, wherein l′ is an Orthogonal Frequency Division Multiplexing (OFDM) symbol serial number in an SRS resource, R is a repetition factor configured by the first communication node through a higher-layer parameter, and R partial is a factor configured by the first communication node through a higher-layer parameter and used for indicating repetition between SRS resources or SRS resource sets;
in a case where the SRS is a periodic SRS or a semi-persistent SRS, an SRS transmission number n SRS is calculated as:
n
SRS
=
⌊
(
(
N
slot
frame
,
μ
n
f
+
n
s
,
f
μ
-
T
offset
T
SRS
)
·
(
N
symb
SRS
R
)
+
⌊
l
′
R
⌋
)
/
R
partial
⌋
wherein l′ is an OFDM symbol serial number in an SRS resource, R is a repetition factor configured by the first communication node through a higher-layer parameter, R partial is a factor configured by the first communication node through a higher-layer parameter and used for indicating repetition between SRS resources or SRS resource sets or SRS transmission slots,
N
symb
SRS
is consecutive OFDM symbols occupied by the SRS resource,
N
slot
frame
,
μ
is the number of slots per frame in a case where a sub-carrier interval is configured as μ, n f is a system frame serial number,
n
s
,
f
μ
is an intra-frame slot serial number in a case where the sub-carrier interval is configured as μ, T SRS is a slot period of the SRS, and T offset is a slot offset of the SRS.
2 . The method according to claim 1 , wherein the rule agreed upon with the first communication node comprises:
a number of times that a periodic SRS or a semi-persistent SRS is repeatedly transmitted in a time domain or between slots is a ratio of a hopping bandwidth to a multiple-transmission bandwidth, wherein the multiple-transmission bandwidth is a product of a transmission bandwidth and the number of different transmission positions in a frequency domain.
3 . The method according to claim 1 , wherein a transmission comb offset of the SRS is obtained based on the SRS transmission number n SRS , and the transmission comb offset
k
TC
(
p
i
)
of the SRS transmitted on a p i th antenna port is:
k
TC
(
p
i
)
=
{
(
k
_
TC
+
n
SRS
+
K
TC
/
2
)
mod
K
TC
if
n
SRS
cs
∈
{
n
SRS
cs
,
max
/
2
,
…
,
n
SRS
cs
,
max
-
1
}
and
N
ap
SRS
=
4
and
p
i
∈
{
1001
,
1003
}
(
k
_
TC
+
n
SRS
)
mod
K
TC
otherwise
wherein k TC is the transmission comb offset of the SRS configured by the first communication node through a higher-layer parameter, n SRS is the SRS transmission number, K TC is the number of transmission combs,
n
SRS
cs
is a cycle shirt or an SKS sequence,
n
SRS
cs
,
max
is a maximum number of the cyclic shift of the SRS sequence, and
N
ap
SRS
is the number of antenna ports of the SRS;
wherein the SRS is the aperiodic SRS or the periodic SRS or the semi-persistent SRS.
4 . A second communication node, comprising a memory storing instructions and a processor in communication with the memory, wherein the processor is configured to execute the instructions to execute the method according to claim 1 .
5 . A non-transitory computer-readable storage medium, the computer-readable storage medium storing a computer program, wherein the computer program is configured to execute the method according to claim 1 .
6 . The method according to claim 1 , wherein the rule agreed upon with the first communication node comprises at least one of:
in a case where the SRS is located at a frequency domain position where SRS transmission is not available, or in a case where the frequency domain position of the SRS completely or partially overlaps with a frequency domain position of another signal, the frequency domain position of the SRS in a current time domain position is updated to a frequency domain position corresponding to a previous time domain position at which the SRS is transmitted, wherein the SRS is the aperiodic SRS or the periodic SRS or the semi-persistent SRS, and
in a case where the SRS is located at a frequency domain position where SRS transmission is not available, or in a case where the frequency domain position of the SRS completely or partially overlaps with a frequency domain position of another signal, the frequency domain position of the SRS in a current time domain position is updated to a frequency domain position corresponding to a next time domain position at which the SRS is transmitted, wherein the SRS is the aperiodic SRS or the periodic SRS or the semi-persistent SRS.
7 . The method according to claim 1 , wherein the rule agreed upon with the first communication node comprises at least one of:
in a case where the SRS is located at a frequency domain position where SRS transmission is not available, or in a case where the frequency domain position of the SRS completely or partially overlaps with a frequency domain position of another signal, an SRS transmission number is not accumulated, wherein the SRS is the aperiodic SRS or the periodic SRS or the semi-persistent SRS; and
in a case where the SRS is located at a frequency domain position where SRS transmission is not available, or in a case where the frequency domain position of the SRS completely or partially overlaps with a frequency domain position of another signal, N is added to an SRS transmission number, wherein N is an integer greater than or equal to 2 and less than or equal to 10, wherein the SRS is the aperiodic SRS or the periodic SRS or the semi-persistent SRS.
8 . The method according to claim 1 , wherein the rule agreed upon with the first communication node comprises:
a transmission comb offset of the SRS is obtained based on at least one of following parameters: a symbol or slot index, a frequency domain subband or frequency band index, a cell Identity Document (ID) or User Equipment (UE) ID, and the SRS transmission number n SRS ;
wherein the SRS is the aperiodic SRS or the periodic SRS or the semi-persistent SRS.
9 . A Sounding Reference Signal (SRS) transmission method, comprising:
receiving an SRS transmitted by a second communication node according to a rule agreed upon with the second communication node;
wherein the rule agreed upon with the second communication node comprises at least one of:
in a case where the SRS is an aperiodic SRS, an SRS transmission number n SRS is calculated as: n SRS =└└l′/R┘/R partial ┘, wherein l′ is an Orthogonal Frequency Division Multiplexing (OFDM) symbol serial number in an SRS resource, R is a repetition factor configured by the first communication node through a higher-layer parameter, and R partial is a factor configured by the first communication node through a higher-layer parameter and used for indicating repetition between SRS resources or SRS resource sets;
in a case where the SRS is a periodic SRS or a semi-persistent SRS, an SRS transmission number n SRS is calculated as:
n
SRS
=
⌊
(
(
N
slot
frame
,
μ
n
f
+
n
s
,
f
μ
-
T
offset
T
SRS
)
·
(
N
symb
SRS
R
)
+
⌊
l
′
R
⌋
)
/
R
partial
⌋
wherein l′ is an OFDM symbol serial number in an SRS resource, R is a repetition factor configured by the first communication node through a higher-layer parameter, R partial is a factor configured by the first communication node through a higher-layer parameter and used for indicating repetition between SRS resources or SRS resource sets or SRS transmission slots,
N
symb
SRS
is consecutive OFDM symbols occupied by the SRS resource,
N
slot
frame
,
μ
is the number of slots per frame in a case where a sub-carrier interval is configured as μ, n f is a system frame serial number,
n
s
,
f
μ
is an intra-frame slot serial number in a case where the sub-carrier interval is configured as μ, T SRS is a slot period of the SRS, and T offset is a slot offset of the SRS.
10 . The method according to claim 9 , wherein the rule agreed upon with the second communication node comprises at least one of:
a number of times that a periodic SRS or a semi-persistent SRS is repeatedly transmitted in a time domain or between slots is a ratio of a hopping bandwidth to a multiple-transmission bandwidth, wherein the multiple-transmission bandwidth is a product of a transmission bandwidth and the number of different transmission positions in a frequency domain;
in a case where the SRS is located at a frequency domain position where SRS transmission is not available, or in a case where the frequency domain position of the SRS completely or partially overlaps with a frequency domain position of another signal, the frequency domain position of the SRS in a current time domain position is updated to a frequency domain position corresponding to a previous time domain position at which the SRS is transmitted, wherein the SRS is the aperiodic SRS or the periodic SRS or the semi-persistent SRS;
in a case where the SRS is located at a frequency domain position where SRS transmission is not available, or in a case where the frequency domain position of the SRS completely or partially overlaps with a frequency domain position of another signal, the frequency domain position of the SRS in a current time domain position is updated to a frequency domain position corresponding to a next time domain position at which the SRS is transmitted, wherein the SRS is the aperiodic SRS or the periodic SRS or the semi-persistent SRS;
in a case where the SRS is located at a frequency domain position where SRS transmission is not available, or in a case where the frequency domain position of the SRS completely or partially overlaps with a frequency domain position of another signal, an SRS transmission number is not accumulated, wherein the SRS is the aperiodic SRS or the periodic SRS or the semi-persistent SRS;
in a case where the SRS is located at a frequency domain position where SRS transmission is not available, or in a case where the frequency domain position of the SRS completely or partially overlaps with a frequency domain position of another signal, N is added to an SRS transmission number, wherein N is an integer greater than or equal to 2 and less than or equal to 10, wherein the SRS is the aperiodic SRS or the periodic SRS or the semi-persistent SRS; and
a transmission comb offset of the SRS is obtained based on at least one of following parameters: a symbol or slot index, a frequency domain subband or frequency band index, a cell Identity Document (ID) or User Equipment (UE) ID, and the SRS transmission number n SRS , wherein the SRS is the aperiodic SRS or the periodic SRS or the semi-persistent SRS.
11 . The method according to claim 9 , wherein a transmission comb offset of the SRS is obtained based on the SRS transmission number n SRS , and the transmission comb offset
k
TC
(
p
i
)
of the SRS transmitted on a p i th antenna port is:
k
TC
(
p
i
)
=
{
(
k
_
TC
+
n
SRS
+
K
TC
/
2
)
mod
K
TC
if
n
SRS
cs
∈
{
n
SRS
cs
,
max
/
2
,
…
,
n
SRS
cs
,
max
-
1
}
and
N
ap
SRS
=
4
and
p
i
∈
{
1001
,
1003
}
(
k
_
TC
+
n
SRS
)
mod
K
TC
otherwise
wherein k TC is the transmission comb offset of the SRS configured by a first communication node through a higher-layer parameter, n SRS is the SRS transmission number, K TC is the number of transmission combs,
n
SRS
cs
is a cyclic shift of an SRS sequence,
n
SRS
cs
,
max
is a maximum number of the cyclic shift of the SRS sequence, and
N
ap
SRS
is the number of antenna ports of the SRS;
wherein the SRS is the aperiodic SRS or the periodic SRS or the semi-persistent SRS.
12 . A first communication node, comprising a memory storing instructions and a processor in communication with the memory, wherein the processor is configured to execute the instructions to execute the method according to claim 9 .
13 . A non-transitory computer-readable storage medium, the computer-readable storage medium storing a computer program, wherein the computer program is configured to execute the method according to claim 9 .