Partial frequency sounding
Methods and apparatuses for are disclosed. A method comprises receiving a MAC CE indicating a P F value and a value indicating a starting position k offset in frequency domain for a SRS resource: and transmitting the SRS resource in m P contiguous resource blocks starting from k 0 (p i ) +k offset , where m P is the largest integer that is equal to or smaller than (I), wherein m SRS,B SRS is the allocated sounding frequency band of the SRS resource configured by RRC signaling, and k 0 (p i ) is the start position of the SRS resource determined by RRC signaling. ⌊ 1 P F m SRS , B SRS ⌋ ( I )
1 . A method performed by a user equipment (UE), the method comprising:
receiving a radio resource control (RRC) signaling indicating a PF value and a value indicating a starting position offset k offset in frequency domain for a sounding reference signal (SRS) resource; and
transmitting the SRS resource in m P contiguous resource blocks starting from
k
0
(
p
i
)
+
k
offset
,
where m P is a largest integer that is equal to or smaller than
⌊
1
P
F
m
SRS
,
B
SRS
⌋
,
wherein m SRS,B SRS is an allocated sounding frequency band of the SRS resource configured by the RRC signaling, and
k
0
(
p
i
)
is a start position of the SRS resource determined by the RRC signaling, wherein the starting position offset k offset is determined by at least one of:
a number of resource blocks (N offset ) indicated by an N offset field, where
k
offset
=
N
offset
×
N
SC
RB
,
where
N
SC
RB
is a number of subcarriers per resource block; or
a number of m P resource blocks (M offset ) indicated by an M offset field, where
k
offset
=
M
offset
×
m
p
×
N
SC
RB
.
2 . The method of claim 1 , wherein the P F value is indicated by a P F field with a bit length determined by ┌log 2 (N P F )┐, where the N P F is a number of multiple P F values.
3 . The method of claim 1 , wherein N offset is no more than
P
^
F
-
1
P
^
F
m
SRS
,
B
SRS
,
where {circumflex over (P)} F is the indicated P F value.
4 . The method of claim 1 , wherein M offset is one of 0, 1, . . . , and {circumflex over (P)} F −1, where {circumflex over (P)} F is the indicated P F value.
5 . The method of claim 1 , wherein the P F value and the value indicating k offset apply to all SRS resources within an SRS resource set indicated by a SRS resource set identifier (ID) field contained in the RRC signaling.
6 . The method of claim 1 , wherein the P F value and the value indicating k offset apply to the SRS resource indicated by a SRS resource identifier (ID) field contained in the RRC signaling.
7 . The method of claim 1 , wherein the P F value and the value indicating k offset apply to all SRS resources contained in an SRS resource set containing the SRS resource indicated by a SRS resource identifier (ID) field contained in the RRC signaling.
8 . A user equipment (UE) for wireless communication, comprising:
at least one memory; and
at least one processor coupled with the at least one memory and configured to cause the UE to:
receive a radio resource control (RRC) signaling indicating a P F value and a value indicating a starting position offset k offset in frequency domain for a sounding reference signal (SRS) resource; and
transmit the SRS resource in m P contiguous resource blocks starting from
k
0
(
p
i
)
+
k
offset
,
where m P is a largest integer that is equal to or smaller than
⌊
1
P
F
m
SRS
,
B
SRS
⌋
,
wherein m SRS,B SRS is an allocated sounding frequency band of the SRS resource configured by the RRC signaling, and
k
0
(
p
i
)
is a start position of the SRS resource determined by the RRC signaling, wherein the starting position offset k offset is determined by at least one of:
a number of resource blocks (N offset ) indicated by an N offset field, where
k
offset
=
N
offset
×
N
SC
RB
,
where
N
SC
RB
is a number of subcarriers per resource block; or
a number of m P resource blocks (M offset ) indicated by an M offset field, where
k
offset
=
M
offset
×
m
p
×
N
SC
RB
.
9 . The UE of claim 8 , wherein the P F value is one of multiple P F values configured by the RRC signaling.
10 . The UE of claim 9 , wherein the P F value is indicated by a P F field with a bit length determined by ┌log 2 (N P F )┐, where the N P F is a number of the multiple P F values.
11 . The UE of claim 8 , wherein N offset is no more than
P
^
F
-
1
P
^
F
m
SRS
,
B
SRS
,
where {circumflex over (P)} F is the indicated P F value.
12 . The UE of claim 8 , wherein M offset is one of 0, 1, . . . , and {circumflex over (P)} F −1, where {circumflex over (P)} F is the indicated P F value.
13 . The UE of claim 8 , wherein the P F value and the value indicating k offset apply to all SRS resources within an SRS resource set indicated by a SRS resource set identifier (ID) field contained in the RRC signaling.
14 . The UE of claim 8 , wherein the P F value and the value indicating k offset apply to the SRS resource indicated by a SRS resource identifier (ID) field contained in the RRC signaling.
15 . The UE of claim 8 , wherein the P F value and the value indicating k offset apply to all SRS resources contained in an SRS resource set containing the SRS resource indicated by a SRS resource identifier (ID) field contained in the RRC signaling.
16 . A processor for wireless communication, comprising:
at least one controller coupled with at least one memory and configured to cause the processor to:
receive a radio resource control (RRC) signaling indicating a P F value and a value indicating a starting position offset k offset in frequency domain for a sounding reference signal (SRS) resource; and
transmit the SRS resource in m P contiguous resource blocks starting from
k
0
(
p
i
)
+
k
offset
,
where m P is a largest integer that is equal to or smaller than
⌊
1
P
F
m
SRS
,
B
SRS
⌋
,
wherein m SRS,B SRS is an allocated sounding frequency band of the SRS resource configured by the RRC signaling, and
k
0
(
p
i
)
is a start position of the SRS resource determined by the RRC signaling, wherein the starting position offset k offset is determined by at least one of:
a number of resource blocks (N offset ) indicated by an N offset field, where
k
offset
=
N
offset
×
N
SC
RB
,
where
N
SC
RB
is a number of subcarriers per resource block; or
a number of m P resource blocks (M offset ) indicated by an M offset field, where
k
offset
=
M
offset
×
m
p
×
N
SC
RB
.
17 . A method performed by a user equipment (UE), the method comprising:
transmitting a sounding reference signal (SRS) resource in m P contiguous resource blocks starting from
k
0
(
p
i
)
+
k
offset
×
⌊
1
P
F
m
SRS
,
B
SRS
⌋
×
N
sc
RB
,
where
m
P
=
⌊
1
P
F
m
SRS
,
B
SRS
⌋
and
k
offset
∈
{
0
,
1
,
…
,
P
F
-
1
}
,
where m SRS,B SRS is an allocated sounding frequency band of the SRS resource in a number of resource blocks configured by radio resource control (RRC) signaling, P F is a value configured by RRC signaling,
N
SC
RB
is a number of subcarriers per resource block, and
k
0
(
p
i
)
is a start position of the SRS resource determined by the RRC signaling without partial frequency sounding.
18 . The method of claim 17 , further comprising:
receiving a media access control (MAC) control element (CE) indicating the P F value and a value indicating the starting position offset k offset in frequency domain for the SRS resource.
19 . The method of claim 18 , wherein the P F value is indicated by a P F field with a bit length determined by ┌log 2 (N P F )┐, where the N P F is a number of multiple P F values.
20 . The method of claim 17 , further comprising:
receiving radio resource control (RRC) signaling indicating the P F value and a value indicating the starting position offset k offset in frequency domain for the SRS resource.