A.7 V2X reference measurement channels
38.101-13GPPNRPart 1: Range 1 StandaloneRelease 17TSUser Equipment (UE) radio transmission and reception
A.7.1 General
The algorithm for determining the payload size A is as follows; given a desired coding rate R and radio block allocation NRB
1. Calculate the RE number of 2nd stage SCI Q_SCI2^’ that can be transmitted in a given sub-frame, where in order to make sure that the code-rate of 2-A is approximate to SCI 1-A, a beta offset is selected based on MCS, and vacant resource elements γ value is determined based on NRB and DMRS frequency density.
2. Transport Block Size is determined according to clause 8.1.3.2 of TS 38.214 [13] based on Table A.7.1-1.
3. Calculate Binary Channel Bits per Slot for PSSCH as below
Binary Channel Bits per Slot = (NRB* Subcarriers per resource block*CP-OFDM symbols per slot – DMRS resource REs – PSCCH resource Res – Q_SCI2^’) * Qm
Where Qm is the modulation order corresponding to MCS.
In Table A.7.1-1 Common reference channel parameters are listed the Sidelink reference measurement channels specified in annexes A.7.2 to A.7.6.
Table A.7.1-1: Common reference channel parameters
|
Parameter |
Value |
remark |
|
Number of HARQ Processes |
1 |
|
|
Channel state |
AWGN |
|
|
Subcarriers per resource block |
12 |
|
|
sl-PSSCH-DMRS-TimePatternList |
2 |
symbol4 and symbol 10 in each slot FDMed with PSSCH within DMRS symbol Frequency density is ½ |
|
CP-OFDM symbols per slot (Note1) |
12 for all slots |
Excluding the first OFDM symbol in one SL slot used for AGC |
|
PSCCH resource |
10 PRBs, 3 symbols in time domain |
|
|
Slot number in 10ms |
for 15kHz, 30kHz, 60kHz |
|
|
PT-RS |
disable |
|
|
CSI-RS |
disable |
|
|
x-overhead |
0 |
|
|
PSFCH period |
0 |
|
|
2nd stage SCI payload size |
59 |
35bits SCI-2A + 24bits CRC |
|
Redundancy Version |
RV0 |
For channel coding |
|
Alpha value for SCI-2 |
1 |
A.7.2 FRC for V2X receiver requirements for QPSK
For V2X transmission over PC5, Table A.7.2-1, Table A.7.2-2 and Table A.7.2-3 are applicable for measurements on the Receiver Characteristics with the exception of Maximum input level.
Table A.7.2-1: Fixed reference channel for V2X receiver requirements (SCS 15 kHz, QPSK)
|
Parameter |
Unit |
Value |
||||
|
Channel bandwidth |
MHz |
53 |
10 |
20 |
30 |
40 |
|
Subcarrier spacing |
kHz |
15 |
15 |
15 |
15 |
15 |
|
Subchannel size |
12 |
10 |
15 |
10 |
12 |
|
|
Allocated resource blocks |
24 |
50 |
105 |
160 |
216 |
|
|
MCS Index |
4 |
4 |
4 |
4 |
4 |
|
|
MCS Table for TBS determination |
64QAM |
|||||
|
Modulation |
QPSK |
QPSK |
QPSK |
QPSK |
QPSK |
|
|
Transport Block Size |
1608 |
3624 |
7936 |
12296 |
16896 |
|
|
Transport block CRC |
Bits |
16 |
16 |
24 |
24 |
24 |
|
LDPC base graph |
2 |
2 |
1 |
1 |
1 |
|
|
Number of Code Blocks per Slot |
1 |
1 |
1 |
2 |
3 |
|
|
Beta offset for 2nd stage SCI |
2.25 |
2.25 |
2.25 |
2.25 |
2.25 |
|
|
value when 2nd stage SCI rate match |
7 |
1 |
1 |
1 |
1 |
|
|
Binary Channel Bits per Slot |
5160 |
12036 |
26556 |
41076 |
55860 |
|
|
Max. Throughput averaged over 100ms |
Mbps |
0.1608 |
0.3624 |
0.7936 |
1.2296 |
1.6896 |
|
NOTE 1: If more than one Code Block is present, an additional CRC sequence of L = 24 Bits is attached to each Code Block (otherwise L = 0 Bit). NOTE 2: is the number of vacant resource elements in the resource block to which the last coded symbol of the 2nd-stage SCI belongs. NOTE 3: The CBW is only applicable for PS UE in n14. |
||||||
Table A.7.2-2: Fixed reference channel for V2X receiver requirements (SCS 30 kHz, QPSK)
|
Parameter |
Unit |
Value |
|||
|
Channel bandwidth |
MHz |
10 |
20 |
30 |
40 |
|
Subcarrier spacing |
kHz |
30 |
30 |
30 |
30 |
|
Subchannel size |
12 |
10 |
15 |
15 |
|
|
Allocated resource blocks |
24 |
50 |
75 |
105 |
|
|
MCS Index |
4 |
4 |
4 |
4 |
|
|
MCS Table for TBS determination |
64QAM |
||||
|
Modulation |
QPSK |
QPSK |
QPSK |
QPSK |
|
|
Transport Block Size |
1608 |
3624 |
5632 |
7936 |
|
|
Transport block CRC |
Bits |
16 |
16 |
24 |
24 |
|
LDPC base graph |
2 |
2 |
1 |
1 |
|
|
Number of Code Blocks per Slot |
1 |
1 |
1 |
1 |
|
|
Beta offset for 2nd stage SCI |
2.25 |
2.25 |
2.25 |
2.25 |
|
|
value when 2nd stage SCI rate match |
7 |
1 |
1 |
1 |
|
|
Binary Channel Bits per Slot |
5160 |
12036 |
18636 |
26556 |
|
|
Max. Throughput averaged over 100ms |
Mbps |
0.3216 |
0.7248 |
1.1264 |
1.5872 |
|
NOTE 1: If more than one Code Block is present, an additional CRC sequence of L = 24 Bits is attached to each Code Block (otherwise L = 0 Bit). NOTE 2: is the number of vacant resource elements in the resource block to which the last coded symbol of the 2nd-stage SCI belongs. |
|||||
Table A.7.2-3: Fixed reference channel for V2X receiver requirements (SCS 60 kHz, QPSK)
|
Parameter |
Unit |
Value |
|||
|
Channel bandwidth |
MHz |
10 |
20 |
30 |
40 |
|
Subcarrier spacing |
kHz |
60 |
60 |
60 |
60 |
|
Subchannel size |
10 |
12 |
12 |
10 |
|
|
Allocated resource blocks |
10 |
24 |
36 |
50 |
|
|
MCS Index |
4 |
4 |
4 |
4 |
|
|
MCS Table for TBS determination |
64QAM |
||||
|
Modulation |
QPSK |
QPSK |
QPSK |
QPSK |
|
|
Transport Block Size |
456 |
1608 |
2536 |
3624 |
|
|
Transport block CRC |
Bits |
16 |
16 |
16 |
16 |
|
LDPC base graph |
2 |
2 |
2 |
2 |
|
|
Number of Code Blocks per Slot |
1 |
1 |
1 |
1 |
|
|
Beta offset for 2nd stage SCI |
2.25 |
2.25 |
2.25 |
2.25 |
|
|
value when 2nd stage SCI rate match |
7 |
7 |
7 |
1 |
|
|
Binary Channel Bits per Slot |
1464 |
5160 |
8328 |
12036 |
|
|
Max. Throughput averaged over 100ms |
Mbps |
0.1824 |
0.6432 |
1.0144 |
1.4496 |
|
NOTE 1: If more than one Code Block is present, an additional CRC sequence of L = 24 Bits is attached to each Code Block (otherwise L = 0 Bit). NOTE 2: is the number of vacant resource elements in the resource block to which the last coded symbol of the 2nd-stage SCI belongs. |
|||||
A.7.3 FRC for maximum input level for 64QAM
For V2X transmission over PC5, Table A.7.3-1, Table A.7.3-2 and TableA.7.3-3 are applicable for Maximum input level when the maximum modulation order is 64QAM.
Table A.7.3-1: Fixed reference channel for V2X receiver requirements (SCS 15 kHz, 64QAM)
|
Parameter |
Unit |
Value |
||||
|
Channel bandwidth |
MHz |
53 |
10 |
20 |
30 |
40 |
|
Subcarrier spacing |
kHz |
15 |
15 |
15 |
15 |
15 |
|
Subchannel size |
12 |
10 |
15 |
10 |
12 |
|
|
Allocated resource blocks |
24 |
50 |
105 |
160 |
216 |
|
|
MCS Index |
24 |
24 |
24 |
24 |
24 |
|
|
MCS Table for TBS determination |
64QAM |
|||||
|
Modulation |
64QAM |
64QAM |
64QAM |
64QAM |
64QAM |
|
|
Transport Block Size |
11528 |
27144 |
60456 |
92200 |
127080 |
|
|
Transport block CRC |
Bits |
24 |
24 |
24 |
24 |
24 |
|
LDPC base graph |
1 |
1 |
1 |
1 |
1 |
|
|
Number of Code Blocks per Slot |
2 |
4 |
8 |
11 |
16 |
|
|
Beta offset for 2nd stage SCI |
6.25 |
6.25 |
6.25 |
6.25 |
6.25 |
|
|
value when 2nd stage SCI rate match |
7 |
1 |
1 |
1 |
1 |
|
|
Binary Channel Bits per Slot |
15336 |
35964 |
79524 |
123084 |
167436 |
|
|
Max. Throughput averaged over 100ms |
Mbps |
1.1528 |
2.7144 |
6.0456 |
9.22 |
12.708 |
|
NOTE 1: If more than one Code Block is present, an additional CRC sequence of L = 24 Bits is attached to each Code Block (otherwise L = 0 Bit). NOTE 2: is the number of vacant resource elements in the resource block to which the last coded symbol of the 2nd-stage SCI belongs. NOTE 3: The CBW is only applicable for PS UE in n14. |
||||||
Table A.7.3-2: Fixed reference channel for V2X receiver requirements (SCS 30 kHz, 64QAM)
|
Parameter |
Unit |
Value |
|||
|
Channel bandwidth |
MHz |
10 |
20 |
30 |
40 |
|
Subcarrier spacing |
kHz |
30 |
30 |
30 |
30 |
|
Subchannel size |
12 |
10 |
15 |
15 |
|
|
Allocated resource blocks |
24 |
50 |
75 |
105 |
|
|
MCS Index |
24 |
24 |
24 |
24 |
|
|
MCS Table for TBS determination |
64QAM |
||||
|
Modulation |
64QAM |
64QAM |
64QAM |
64QAM |
|
|
Transport Block Size |
11528 |
27144 |
42016 |
60456 |
|
|
Transport block CRC |
Bits |
24 |
24 |
24 |
24 |
|
LDPC base graph |
1 |
1 |
1 |
1 |
|
|
Number of Code Blocks per Slot |
2 |
4 |
5 |
8 |
|
|
Beta offset for 2nd stage SCI |
6.25 |
6.25 |
6.25 |
6.25 |
|
|
value when 2nd stage SCI rate match |
7 |
1 |
1 |
1 |
|
|
Binary Channel Bits per Slot |
15336 |
35964 |
55764 |
79524 |
|
|
Max. Throughput averaged over 100ms |
Mbps |
2.3056 |
5.4288 |
8.4032 |
12.091 |
|
NOTE 1: If more than one Code Block is present, an additional CRC sequence of L = 24 Bits is attached to each Code Block (otherwise L = 0 Bit). NOTE 2: is the number of vacant resource elements in the resource block to which the last coded symbol of the 2nd-stage SCI belongs. |
|||||
TableA.7.3-3: Fixed reference channel for V2X receiver requirements (SCS 60 kHz, 64QAM)
|
Parameter |
Unit |
Value |
|||
|
Channel bandwidth |
MHz |
10 |
20 |
30 |
40 |
|
Subcarrier spacing |
kHz |
60 |
60 |
60 |
60 |
|
Subchannel size |
10 |
12 |
12 |
10 |
|
|
Allocated resource blocks |
10 |
24 |
36 |
50 |
|
|
MCS Index |
24 |
24 |
24 |
24 |
|
|
MCS Table for TBS determination |
64QAM |
||||
|
Modulation |
64QAM |
64QAM |
64QAM |
64QAM |
|
|
Transport Block Size |
3240 |
11528 |
18960 |
27144 |
|
|
Transport block CRC |
Bits |
16 |
24 |
24 |
24 |
|
LDPC base graph |
2 |
1 |
1 |
1 |
|
|
Number of Code Blocks per Slot |
1 |
2 |
3 |
4 |
|
|
Beta offset for 2nd stage SCI |
6.25 |
6.25 |
6.25 |
6.25 |
|
|
value when 2nd stage SCI rate match |
7 |
7 |
7 |
1 |
|
|
Binary Channel Bits per Slot |
4248 |
15336 |
24840 |
35964 |
|
|
Max. Throughput averaged over 100ms |
Mbps |
1.296 |
4.6112 |
7.584 |
10.858 |
|
NOTE 1: If more than one Code Block is present, an additional CRC sequence of L = 24 Bits is attached to each Code Block (otherwise L = 0 Bit). NOTE 2: is the number of vacant resource elements in the resource block to which the last coded symbol of the 2nd-stage SCI belongs. |
|||||
A.7.4 FRC for maximum input level for 256QAM
For V2X transmission over PC5, Table A.7.4-1, Table A.7.4-2 and Table A.7.4-3 are applicable for Maximum input level when the 256QAM is supported.
Table A.7.4-1: Fixed reference channel for V2X receiver requirements (SCS 15 kHz, 256QAM)
|
Parameter |
Unit |
Value |
||||
|
Channel bandwidth |
MHz |
53 |
10 |
20 |
30 |
40 |
|
Subcarrier spacing |
kHz |
15 |
15 |
15 |
15 |
15 |
|
Subchannel size |
12 |
10 |
15 |
10 |
12 |
|
|
Allocated resource blocks |
24 |
50 |
105 |
160 |
216 |
|
|
MCS Index |
23 |
23 |
23 |
23 |
23 |
|
|
MCS Table for TBS determination |
256QAM |
|||||
|
Modulation |
256QAM |
256QAM |
256QAM |
256QAM |
256QAM |
|
|
Transport Block Size |
15880 |
36896 |
81976 |
127080 |
172176 |
|
|
Transport block CRC |
Bits |
24 |
24 |
24 |
24 |
24 |
|
LDPC base graph |
1 |
1 |
1 |
1 |
1 |
|
|
Number of Code Blocks per Slot |
2 |
5 |
10 |
16 |
21 |
|
|
Beta offset for 2nd stage SCI |
6.25 |
6.25 |
6.25 |
6.25 |
6.25 |
|
|
value when 2nd stage SCI rate match |
3 |
3 |
3 |
3 |
3 |
|
|
Binary Channel Bits per Slot |
20544 |
48000 |
106080 |
164160 |
223296 |
|
|
Max. Throughput averaged over 100ms |
Mbps |
1.588 |
3.6896 |
8.1976 |
12.708 |
17.218 |
|
NOTE 1: If more than one Code Block is present, an additional CRC sequence of L = 24 Bits is attached to each Code Block (otherwise L = 0 Bit). NOTE 2: is the number of vacant resource elements in the resource block to which the last coded symbol of the 2nd-stage SCI belongs. NOTE 3: The CBW is only applicable for PS UE in n14. |
||||||
Table A.7.4-2: Fixed reference channel for V2X receiver requirements (SCS 30 kHz, 256QAM)
|
Parameter |
Unit |
Value |
|||
|
Channel bandwidth |
MHz |
10 |
20 |
30 |
40 |
|
Subcarrier spacing |
kHz |
30 |
30 |
30 |
30 |
|
Subchannel size |
12 |
10 |
15 |
15 |
|
|
Allocated resource blocks |
24 |
50 |
75 |
105 |
|
|
MCS Index |
23 |
23 |
23 |
23 |
|
|
MCS Table for TBS determination |
256QAM |
||||
|
Modulation |
256QAM |
256QAM |
256QAM |
256QAM |
|
|
Transport Block Size |
15880 |
36896 |
58384 |
81976 |
|
|
Transport block CRC |
Bits |
24 |
24 |
24 |
24 |
|
LDPC base graph |
1 |
1 |
1 |
1 |
|
|
Number of Code Blocks per Slot |
2 |
5 |
7 |
10 |
|
|
Beta offset for 2nd stage SCI |
6.25 |
6.25 |
6.25 |
6.25 |
|
|
value when 2nd stage SCI rate match |
3 |
3 |
3 |
3 |
|
|
Binary Channel Bits per Slot |
20544 |
48000 |
74400 |
106080 |
|
|
Max. Throughput averaged over 100ms |
Mbps |
3.176 |
7.3792 |
11.677 |
16.395 |
|
NOTE 1: If more than one Code Block is present, an additional CRC sequence of L = 24 Bits is attached to each Code Block (otherwise L = 0 Bit). NOTE 2: is the number of vacant resource elements in the resource block to which the last coded symbol of the 2nd-stage SCI belongs. |
|||||
Table A.7.4-3: Fixed reference channel for V2X receiver requirements (SCS 60kHz, 256QAM)
|
Parameter |
Unit |
Value |
|||
|
Channel bandwidth |
MHz |
10 |
20 |
30 |
40 |
|
Subcarrier spacing |
kHz |
60 |
60 |
60 |
60 |
|
Subchannel size |
10 |
12 |
12 |
10 |
|
|
Allocated resource blocks |
10 |
24 |
36 |
50 |
|
|
MCS Index |
23 |
23 |
23 |
23 |
|
|
MCS Table for TBS determination |
256QAM |
||||
|
Modulation |
256QAM |
256QAM |
256QAM |
256QAM |
|
|
Transport Block Size |
4480 |
15880 |
25608 |
36896 |
|
|
Transport block CRC |
Bits |
24 |
24 |
24 |
24 |
|
LDPC base graph |
1 |
1 |
1 |
1 |
|
|
Number of Code Blocks per Slot |
1 |
2 |
4 |
5 |
|
|
Beta offset for 2nd stage SCI |
6.25 |
6.25 |
6.25 |
6.25 |
|
|
value when 2nd stage SCI rate match |
3 |
3 |
3 |
3 |
|
|
Binary Channel Bits per Slot |
5760 |
20544 |
33216 |
48000 |
|
|
Max. Throughput averaged over 100ms |
Mbps |
1.792 |
6.352 |
10.243 |
14.758 |
|
NOTE 1: If more than one Code Block is present, an additional CRC sequence of L = 24 Bits is attached to each Code Block (otherwise L = 0 Bit). NOTE 2: is the number of vacant resource elements in the resource block to which the last coded symbol of the 2nd-stage SCI belongs. |
|||||
Annex B (informative): Void
Annex C (informative):
Downlink physical channels