Reference signal transmission and parameter sending methods, device, terminal and base station
Provided are a reference signal transmission method and device, a parameter sending method and device, a terminal and a base station. The reference signal transmission method includes: determining that frequency domain positions occupied by a reference signal satisfy a predetermined condition, where the predetermined condition includes: discontinuous frequency bands existing among the frequency domain positions occupied by the reference signal; and transmitting the reference signal at the determined frequency domain positions.
1. A reference signal transmission method, applied to a terminal and comprising:
receiving a control signaling which comprises high-layer control signaling, or physical layer dynamic control signaling and the high-layer control signaling;
determining transmission parameter information of a reference signal according to the received control signaling, wherein the control signaling carries the transmission parameter information; and
transmitting the reference signal according to the determined transmission parameter information;
wherein the transmission parameter information comprises information about a time domain frequency hopping unit, index information about a time domain symbol occupied by the reference signal in a time unit, and information about a number of time domain symbols occupied by the reference signal in the time unit; and
wherein the reference signal hops every time domain frequency hopping unit, and in one time domain frequency hopping unit, frequency domain positions of the reference signal are unchanged, and wherein the time domain frequency hopping unit comprises N time domain symbols of the reference signal, where N is a natural number and N comprises 2.
2. The method of claim 1 , wherein one time unit refers to one slot or one subframe.
3. The method of claim 1 , wherein a frequency domain resource occupied by a measurement reference signal is obtained according to a following formula:
n
b
=
{
⌊
4
n
RRC
/
m
SRS
,
b
⌋
mod
N
b
b
≤
b
hop
{
F
b
(
n
SRS
)
+
⌊
4
n
RRC
/
m
SRS
,
b
⌋
}
mod
N
b
otherwise
wherein
F
b
(
n
S
R
S
)
=
{
(
N
b
/
2
)
⌊
n
S
R
S
mod
∏
b
′
=
b
hop
b
N
b
′
T
1
∏
b
′
=
b
hop
b
-
1
N
b
′
⌋
+
⌊
n
S
R
S
mod
∏
b
=
b
hop
b
N
b
′
2
T
1
∏
b
′
=
b
hop
b
-
1
N
b
′
⌋
,
if
N
b
even
⌊
N
b
/
2
⌋
⌊
n
S
R
S
/
T
1
∏
b
′
=
b
hop
b
-
1
N
b
′
⌋
,
if
N
b
odd
wherein T 1 is the time domain frequency hopping unit;
the time domain frequency hopping unit is a number of time domain symbols occupied by the measurement reference signal, wherein the time domain symbols comprise time domain symbols in one time unit and/or time domain symbols in a plurality of time units; and
wherein the reference signal comprises the measurement reference signal.
4. The method of claim 1 , wherein the reference signal comprises a measurement reference signal, and the measurement reference signal satisfies following characteristic:
antenna port information of the measurement reference signal being acquired according to measurement reference signal resource group information.
5. The method of claim 4 , wherein the antenna port information of the measurement reference signal being acquired according to measurement reference signal resource group information comprises:
an antenna port of one SRS resource for sending the SRS is determined according to a SRS resource group identification and a number of antenna ports in a SRS resource.
6. The method of claim 1 , wherein the information about the time domain frequency hopping unit is acquired according to a number of time domain symbols occupied by the reference signal in one time unit; and
wherein the N time domain symbols of the reference signal is in the one time unit.
7. The method of claim 1 , wherein the reference signal comprises a measurement reference signal, and information about frequency domain positions occupied by the measurement reference signal comprises tree structure information C SRS , wherein C SRS is comprised in user equipment-specific (UE-specific) control signaling.
8. The method of claim 1 , wherein frequency domain positions k(t) occupied by the reference signal are determined in the following manner:
k
(
t
)
=
k
o
r
g
+
∑
b
=
0
B
N
s
c
,
b
R
S
n
b
(
t
)
;
n
b
(
t
)
=
{
n
b
,
orig
mod
N
b
b
∉
b
hopA
{
F
b
(
t
)
+
n
b
,
orig
}
mod
N
b
otherwise
;
and
F
b
(
t
)
=
{
(
N
b
/
2
)
⌊
t
mod
∏
b
′
∈
b
hopA
,
b
′
≤
b
N
b
′
T
1
∏
b
′
∈
b
hopA
,
b
′
≤
max
(
b
-
1
,
0
)
N
b
′
⌋
+
⌊
t
mod
∏
b
′
∈
b
hopA
,
b
′
≤
b
N
b
′
2
T
1
∏
b
′
∈
b
hopA
,
b
′
≤
max
(
b
-
1
,
0
)
N
b
′
⌋
if
N
b
even
⌊
N
b
/
2
⌋
⌊
t
/
(
T
1
∏
b
′
∈
b
hopA
,
b
′
≤
max
(
b
-
1
,
0
)
N
b
′
)
⌋
if
N
b
odd
;
wherein t is a time parameter and is a real number greater than or equal to 0, b is an index of a frequency domain bandwidth level corresponding to the reference signal among a plurality of frequency domain bandwidth levels and is equal to 0, 1, B, B is a maximum frequency domain bandwidth level among frequency domain bandwidth levels corresponding to the reference signal and is a non-negative integer, N b is a number of bandwidths with a frequency domain bandwidth level indexed by b comprised by one bandwidth with a frequency domain bandwidth level indexed by max (b−1, 0), N b′ is a number of bandwidths with a frequency domain bandwidth level indexed by b′ comprised by one bandwidth with a frequency domain bandwidth level indexed by max (b′−1, 0), max ( ) is a function taking a maximum value, n b,orig , is an original frequency domain bandwidth index of the reference signal with the frequency domain bandwidth level indexed by b, n b (t) is a frequency domain bandwidth index corresponding to the reference signal with the frequency domain bandwidth level indexed by b at time t, k org is a non-negative integer, N sc,b RS is a frequency domain length corresponding to one bandwidth with the frequency domain bandwidth level indexed by b, Π is a multiplication operation, mod is a remainder function, b hopA is a frequency domain bandwidth level set, and b′ is an index of a frequency domain bandwidth level corresponding to the reference signal among a plurality of frequency domain bandwidth levels and belongs to b hopA ;
wherein T 1 is the time domain frequency hopping unit;
the time domain frequency hopping unit is a number of time domain symbols occupied by the measurement reference signal, wherein the time domain symbols comprise time domain symbols in one time unit and/or time domain symbols in a plurality of time units; and
wherein the reference signal comprises a measurement reference signal.
9. The method of claim 8 , wherein t refers to a t-th transmission of sounding reference signal, SRS, and wherein the measurement reference signal comprises the sounding reference signal.
10. The method of claim 8 , wherein b hopA satisfies at least one of the following:
max(b hopA )≤B;
b hopA comprises indexes of discontinuous frequency domain bandwidth levels; or
on one time domain symbol, the reference signal corresponds to more than two b hopA .
11. A reference signal transmission device, applied to a terminal and comprising:
a processor; and
a memory connected with the processor and for storing instructions executable by the processor,
wherein execution of the instructions by the processor causes the processor to perform a reference signal transmission method, wherein the reference signal transmission method comprises:
receiving a control signaling which comprises high-layer control signaling, or physical layer dynamic control signaling and the high-layer control signaling;
determining transmission parameter information of a reference signal according to received control signaling, wherein the control signaling carries the transmission parameter information; and
transmitting the reference signal according to the determined transmission parameter information;
wherein the transmission parameter information comprises information about a time domain frequency hopping unit, index information about a time domain symbol occupied by the reference signal in a time unit, and information about a number of time domain symbols occupied by the reference signal in the time unit; and
wherein the reference signal hops every time domain frequency hopping unit, and in one time domain frequency hopping unit, frequency domain positions of the reference signal are unchanged, and wherein the time domain frequency hopping unit comprises N time domain symbols of the reference signal, where N is a natural number and N comprises 2.
12. The reference signal transmission device of claim 11 , wherein when the reference signal comprises a measurement reference signal, the measurement reference signal satisfies one of following characteristics:
information about frequency domain positions occupied by the measurement reference signal comprising tree structure information C SRS wherein C SRS is comprised in user equipment-specific (UE-specific) control signaling; or
antenna port information of the measurement reference signal being acquired according to measurement reference signal resource group information.
13. The reference signal transmission device of claim 12 , wherein the antenna port information of the measurement reference signal being acquired according to measurement reference signal resource group information comprises:
an antenna port of one SRS resource for sending the SRS is determined according to a SRS resource group identification and a number of antenna ports in a SRS resource.
14. The reference signal transmission device of claim 11 , wherein one time unit refers to one slot or one subframe.
15. The reference signal transmission device of claim 11 , wherein a frequency domain resource occupied by a measurement reference signal is obtained according to a following formula:
n
b
=
{
⌊
4
n
RRC
/
m
SRS
,
b
⌋
mod
N
b
b
≤
b
hop
{
F
b
(
n
SRS
)
+
⌊
4
n
RRC
/
m
SRS
,
b
⌋
mod
N
b
otherwise
wherein
F
b
(
n
S
R
S
)
=
{
(
N
b
/
2
)
⌊
n
S
R
S
mod
∏
b
′
=
b
hop
b
N
b
′
T
1
∏
b
′
=
b
hop
b
-
1
N
b
′
⌋
+
⌊
n
S
R
S
mod
∏
b
′
=
b
hop
b
N
b
′
2
T
1
∏
b
′
=
b
hop
b
-
1
N
b
′
⌋
,
if
N
b
even
⌊
N
b
/
2
⌋
⌊
n
S
R
S
/
T
1
∏
b
′
=
b
hop
b
-
1
N
b
′
⌋
,
if
N
b
odd
wherein T 1 is the time domain frequency hopping unit;
the time domain frequency hopping unit is a number of time domain symbols occupied by the measurement reference signal, wherein the time domain symbols comprise time domain symbols in one time unit and/or time domain symbols in a plurality of time units; and
wherein the reference signal comprises the measurement reference signal.
16. The reference signal transmission device of claim 11 , wherein frequency domain positions k(t) occupied by the reference signal are determined in the following manner:
k
(
t
)
=
k
o
r
g
+
∑
b
=
0
B
N
s
c
,
b
R
S
n
b
(
t
)
;
n
b
(
t
)
=
{
n
b
,
orig
mod
N
b
b
∉
b
h
o
p
A
{
F
b
(
t
)
+
n
b
,
orig
}
mod
N
b
otherwise
;
and
F
b
(
t
)
=
{
(
N
b
/
2
)
⌊
t
mod
∏
b
′
∈
b
h
o
p
A
,
b
′
≤
b
N
b
′
T
1
∏
b
′
∈
b
h
o
p
A
,
b
′
≤
<
max
(
b
-
1
,
0
)
,
N
b
′
⌋
+
⌊
t
mod
∏
b
′
∈
b
h
o
p
A
,
b
′
≤
b
N
b
′
2
T
1
∏
b
′
∈
b
h
o
p
A
,
b
′
≤
<
max
(
b
-
1
,
0
)
,
N
b
′
⌋
if
N
b
even
⌊
N
b
/
2
⌋
⌊
t
/
(
T
1
∏
b
′
∈
b
h
o
p
A
,
b
′
≤
<
max
(
b
-
1
,
0
)
N
b
′
)
⌋
if
N
b
odd
;
wherein t is a time parameter and is a real number greater than or equal to 0, b is an index of a frequency domain bandwidth level corresponding to the reference signal among a plurality of frequency domain bandwidth levels and is equal to 0, 1, B, B is a maximum frequency domain bandwidth level among frequency domain bandwidth levels corresponding to the reference signal and is a non-negative integer, N b is a number of bandwidths with a frequency domain bandwidth level indexed by b comprised by one bandwidth with a frequency domain bandwidth level indexed by max (b−1, 0), N b′ is a number of bandwidths with a frequency domain bandwidth level indexed by b′ comprised by one bandwidth with a frequency domain bandwidth level indexed by max (b′−1, 0), max ( ) is a function taking a maximum value, n b,orig is an original frequency domain bandwidth index of the reference signal with the frequency domain bandwidth level indexed by b, n b (t) is a frequency domain bandwidth index corresponding to the reference signal with the frequency domain bandwidth level indexed by b at time t, k org is a non-negative integer, N sc,b RS is a frequency domain length corresponding to one bandwidth with the frequency domain bandwidth level indexed by b, Π is a multiplication operation, mod is a remainder function, b hopA is a frequency domain bandwidth level set, and b′ is an index of a frequency domain bandwidth level corresponding to the reference signal among a plurality of frequency domain bandwidth levels and belongs to b hopA ;
wherein T 1 is the time domain frequency hopping unit;
the time domain frequency hopping unit is a number of time domain symbols occupied by a measurement reference signal, wherein the time domain symbols comprise time domain symbols in one time unit and/or time domain symbols in a plurality of time units; and
wherein the reference signal comprises the measurement reference signal.
17. The reference signal transmission device of claim 16 , wherein t refers to a t-th transmission of sounding reference signal, SRS, and wherein the measurement reference signal comprises the sounding reference signal.
18. The reference signal transmission device of claim 11 , wherein the information about the time domain frequency hopping unit is acquired according to a number of time domain symbols occupied by the reference signal in one time unit; and
wherein the N time domain symbols of the reference signal is in the one time unit.
19. A reference signal transmission method, applied to a base station and comprising:
sending control signaling, wherein the control signaling carries transmission parameter information of a reference signal, and the control signaling comprises high-layer control signaling, or physical layer dynamic control signaling and the high-layer control signaling;
wherein the transmission parameter information comprises information about a time domain frequency hopping unit, index information about a time domain symbol occupied by the reference signal in a time unit, and information about a number of time domain symbols occupied by the reference signal in the time unit; and
wherein the reference signal hops every time domain frequency hopping unit, and in one time domain frequency hopping unit, frequency domain positions of the reference signal are unchanged, and wherein the time domain frequency hopping unit comprises N time domain symbols of the reference signal, where N is a natural number and N comprises 2.
20. A reference signal transmission device, applied to a base station and comprising:
a processor; and
a memory connected with the processor and for storing instructions executable by the processor,
wherein execution of the instructions by the processor causes the processor to perform the reference signal transmission method of claim 19 .