Method for transmitting and receiving signals, and apparatus for supporting same in wireless communication system
Disclosed are a method and an apparatus for supporting same, the method carried out by a terminal in a wireless communication system comprising the steps of: receiving a synchronization signal/physical broadcast channel (SS/PBCH) block comprising a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH); receiving system information on the basis of the SS/PBCH block; receiving information associated with a positioning reference signal (PRS) sequence identifier (ID) after receiving the system information; and receiving a PRS associated with the PRS sequence ID, wherein a pseudo-random sequence generator associated with sequence generation of a PRS is initialized by (I) where M is a natural number, K is the number of orthogonal frequency division multiplexing (OFDM) symbols per slot, (II) is a slot index, (III) is an OFDM symbol index within the slot, (IV) is the PRS sequence ID, and mod is a modulo calculation.
1. A method performed by a user equipment (UE) in a wireless communication system, the method comprising:
receiving a synchronization signal/physical broadcast channel (SS/PBCH) block comprising a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH);
receiving system information based on the SS/PBCH block;
after the reception of the system information:
receiving information related to a positioning reference signal (PRS) sequence identifier (ID);
receiving a PRS related to the PRS sequence ID;
performing measurements based on the PRS; and
reporting a result of the measurements,
wherein a pseudo-random sequence generator related to sequence generation of the PRS is initialized according to the following equation:
c
init
=
(
2
3
1
-
(
M
-
10
)
⌊
N
ID
R
S
2
1
0
⌋
+
2
1
0
(
K
·
n
s
+
l
+
1
)
(
2
·
N
ID
R
S
mod
1024
)
+
1
)
+
N
ID
R
S
mod
1024
)
mod
2
3
1
,
where M is a natural number, K is a number of orthogonal frequency division multiplexing (OFDM) symbols per slot, n s is a slot index, l is an OFDM symbol index within a slot, N RS ID is the PRS sequence ID, and mod is a modular operation.
2. The method of claim 1 , wherein N RS ID is configured by a higher layer, and wherein the following relationship: N RS ID ∈{0, 1, . . . , 2 19-1 } is satisfied.
3. The method of claim 1 , wherein M is a natural number greater than 10 and smaller than 31.
4. The method of claim 1 , wherein M is 19.
5. The method of claim 1 , wherein a sequence of the PRS satisfies a value obtained from a predetermined length-31 Gold sequence.
6. The method of claim 1 , further comprising receiving configuration information comprising:
(i) information on a PRS resource;
(ii) information on a PRS resource set including the PRS resource; and
(iii) information on a transmission and reception point (TRP) ID,
wherein the PRS is received based on the configuration information.
7. An apparatus configured to operate in a wireless communication system, the apparatus comprising:
a transceiver; and
at least one processor coupled with the transceiver,
wherein the at least one processor is configured to:
receive a synchronization signal/physical broadcast channel (SS/PBCH) block comprising a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH);
receive system information based on the SS/PBCH block;
after the reception of the system information:
receive information related to a positioning reference signal (PRS) sequence identifier (ID); and
receive a PRS related to the PRS sequence ID, and
wherein a pseudo-random sequence generator related to sequence generation of the PRS is initialized according to the following equation:
c
init
=
(
2
3
1
-
(
M
-
1
0
)
⌊
N
ID
R
S
2
1
0
⌋
+
2
1
0
(
K
·
n
s
+
l
+
1
)
(
2
·
(
N
ID
R
S
mod
1
0
2
4
)
+
1
)
+
N
ID
R
S
mod
1
0
24
)
mod
2
31
,
where M is a natural number, K is a number of orthogonal frequency division multiplexing (OFDM) symbols per slot, n s is a slot index, l is an OFDM symbol index within a slot N RS ID is the PRS sequence ID, and mod is a modular operation, and
wherein M is 19.
8. The apparatus of claim 7 , wherein N RS ID is configured by a higher layer, and wherein the following relationship: N RS ID ∈{0, 1, . . . , 2 19-1 } is satisfied.
9. The apparatus of claim 7 , wherein M is 19.
10. The apparatus of claim 7 , wherein a sequence of the PRS satisfies a value obtained from a predetermined length-31 Gold sequence.
11. The apparatus of claim 7 , wherein the apparatus is configured to communicate with at least one of a mobile terminal, a network, or an autonomous driving vehicle other than a vehicle including the apparatus.
12. A method performed by an apparatus in a wireless communication system, the method comprising:
transmitting a synchronization signal/physical broadcast channel (SS/PBCH) block comprising a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH);
transmitting system information after the transmission of the SS/PBCH block;
after the transmission of the system information:
transmitting information related to a positioning reference signal (PRS) sequence identifier (ID);
transmitting a PRS related to the PRS sequence ID; and
receiving a result of measurements related to the PRS,
wherein a pseudo-random sequence generator related to sequence generation of the PRS is initialized according to the following equation:
c
init
=
(
2
31
-
(
M
-
1
0
)
⌊
N
ID
RS
2
1
0
⌋
+
2
1
0
(
K
·
n
s
+
l
+
1
)
(
2
·
N
ID
R
S
mod
1024
)
+
1
)
+
N
ID
RS
mod
1024
)
mod
2
3
1
,
where M is a natural number, K is a number of orthogonal frequency division multiplexing (OFDM) symbols per slot, n s is a slot index, l is an OFDM symbol index within a slot, N RS ID the PRS sequence ID, and mod is a modular operation.
13. An apparatus configured to operate in a wireless communication system, the apparatus comprising:
a transceiver; and
at least one processor coupled with the transceiver,
wherein the at least one processor is configured to:
transmit a synchronization signal/physical broadcast channel (SS/PBCH) block comprising a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH);
transmit system information after the transmission of the SS/PBCH block;
after the transmission of the system information:
transmit information related to a positioning reference signal (PRS) sequence identifier (ID);
transmit a PRS related to the PRS sequence ID; and
receiving a result of measurements related to the PRS,
wherein a pseudo-random sequence generator related to sequence generation of the PRS is initialized according to the following equation:
c
init
=
2
3
1
-
(
M
-
10
⌊
N
ID
R
S
2
1
0
⌋
+
2
1
0
(
K
·
n
s
+
l
+
1
)
(
2
·
N
ID
R
S
mod
1024
)
+
1
)
+
N
ID
R
S
mod
1024
)
mod
2
3
1
.
where M is a natural number, K is a number of orthogonal frequency division multiplexing (OFDM) symbols per slot, n s is a slot index, l is an OFDM symbol index within a slot, N RS ID is the PRS sequence ID, and mod is a modular operation.