6.5.1G Frequency Error for V2X Communication
36.521-13GPPEvolved Universal Terrestrial Radio Access (E-UTRA)Part 1: Conformance testingRadio transmission and receptionRelease 17TSUser Equipment (UE) conformance specification
6.5.1G.1 Frequency Error for V2X Communication / Non-concurrent with E-UTRA uplink transmission
6.5.1G.1.1 Test purpose
This test verifies the ability of both, the receiver and the transmitter, to process frequency correctly.
Receiver: to extract the correct frequency from the stimulus signal, offered by the System simulator, under ideal propagation conditions and low level.
Transmitter: to derive the correct modulated carrier frequency from the results, gained by the receiver.
6.5.1G.1.2 Test applicability
This test case applies to all types of UE that support V2X Sidelink communication and Band 47.
6.5.1G.1.3 Minimum Conformance Requirements
The UE modulated carrier frequency for V2X sidelink transmissions shall be accurate to within ±0.1 PPM observed over a period of one time slot (0.5 ms) compared to the absolute frequency in case of using GNSS synchronization source. The same requirements applied over a period of one time slot (0.5 ms) compared to the relative frequency in case of using the E-UTRA Node B or V2X UE sidelink synchronization signals.
When UE is configured for simultaneous E-UTRA V2X sidelink and E-UTRA uplink transmissions for inter-band E-UTRA V2X / E-UTRA bands specified in Table 5.2G-1, the requirements in TS 36.101[2] subclause 6.5.1G apply for V2X sidelink transmission and the requirements in TS 36.101[2] subclause 6.5.1 apply for the E-UTRA uplink transmission.
The normative reference for this requirement is TS 36.101[2] clause 6.5.1G
6.5.1G.1.4 Test description
6.5.1G.1.4.1 Initial condition
Initial conditions are a set of test configurations the UE needs to be tested in and the steps for the SS to take with the UE to reach the correct measurement state.
The initial test configurations consist of environmental conditions, test frequencies, and channel bandwidths based on E-UTRA bands specified in table 5.4.2G.1-1. All of these configurations shall be tested with applicable test parameters for each channel bandwidth, and are shown in table 6.5.1G.1.4.1-1. The details of the V2X reference measurement channels (RMCs) are specified in Annex A.8.3 and the GNSS configuration in TS 36.508 [7] subclause 4.11.
Table 6.5.1G.1.4.1-1: Test Configuration Table
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Initial Conditions |
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Test Environment as specified in TS 36.508[7] subclause 4.1 |
Normal, TL/VL, TL/VH, TH/VL, TH/VH |
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Test Frequencies as specified in TS 36.508 [7] subclause 4.3.1 |
Mid range |
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Test Channel Bandwidths as specified in TS 36.508 [7] subclause 4.3.1 |
Lowest, Highest |
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Test Parameters for Channel Bandwidths |
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V2X Configuration to Transmit |
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Ch BW |
Modulation |
PSSCH RB allocation |
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10MHz |
QPSK |
48@2 |
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20MHz |
QPSK |
96@2 |
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1. Connect the SS and GNSS simulator to the UE antenna connectors as shown in TS 36.508 [7] Annex A, Figure A.89.
2. The parameter settings for the V2X sidelink transmission over PC5 for both SS and UE are pre-configured according to TS 36.508 [7] subclause 4.10.1. Message content exceptions are defined in clause 6.5.1G.1.4.3.
3. The V2X reference measurement channel is set according to Table 6.5.1G.1.4.1-1.
4. The GNSS simulator is configured for Scenario #1: static in Geographical area #1, as defined in TS36.508 [7] Table 4.11.2-2. Geographical area #1 is also pre-configured in the UE.
5. Propagation conditions are set according to Annex B.0.
6. Ensure the UE is in State 5A-V2X in Transmit Mode according to TS 36.508 [7] clause 4.5.9.
7. The GNSS simulator is triggered to start step 1 of Scenario #1 to simulate a location in the centre of Geographical area #1. Wait for the UE to acquire the GNSS signal and start to transmit.
6.5.1G.1.4.2 Test procedure
1. The UE starts to perform the V2X sidelink communication according to SL-V2X-Preconfiguration. Since the UE has no payload and no loopback data to send the UE sends uplink MAC padding bits on the V2X RMC.
2. The UE transmits at PUMAX level according to pre-configured parameters for the duration of the test.
3. Measure the Frequency Error using Global In-Channel Tx-Test (Annex E).
6.5.1G.1.4.3 Message contents
Message contents are according to TS 36.508 [7] subclause 4.7.I and 4.10.
6.5.1G.1.5 Test requirement
The 20 frequency error Δf results must fulfil the test requirement:
|Δf| ≤ (0.1 PPM + 36 Hz)
6.5.1G.2 Frequency error for V2X Communication / Simultaneous E-UTRA V2X sidelink and E-UTRA uplink transmissions
6.5.1G.2.1 Test Purpose
This test verifies the ability of both, the receiver and the transmitter, to process frequency correctly.
Receiver: to extract the correct frequency from the stimulus signal, offered by the System simulator, under ideal propagation conditions and low level.
Transmitter: to derive the correct modulated carrier frequency from the results, gained by the receiver.
6.5.1G.2.2 Test applicability
This test case applies to all types of E-UTRA UE release 14 and forward that support simultaneous E-UTRA V2X sidelink and E-UTRA uplink transmissions for inter-band E-UTRA V2X / E-UTRA bands specified in TS 36.101 [2] Table 5.2G -2.
6.5.1G.2.3 Minimum conformance requirements
The UE modulated carrier frequency for V2X sidelink transmissions shall be accurate to within ±0.1 PPM observed over a period of one time slot (0.5 ms) compared to the absolute frequency in case of using GNSS synchronization source. The same requirements applied over a period of one time slot (0.5 ms) compared to the relative frequency in case of using the E-UTRA Node B or V2X UE sidelink synchronization signals.
When UE is configured for simultaneous E-UTRA V2X sidelink and E-UTRA uplink transmissions for inter-band E-UTRA V2X / E-UTRA bands specified in TS 36.101 [2] Table 5. 2G -2, the requirements in subclause 6.5.1G.1.3 apply for V2X sidelink transmission and the requirements in subclause 6.5.1.3 apply for the E-UTRA uplink transmission.
The normative reference for this requirement is TS 36.101 [2] clause 6.5.1G.
6.5.1G.2.4 Test description
6.5.1G.2.4.1 Initial conditions
Initial conditions are a set of test configurations the UE needs to be tested in and the steps for the SS to take with the UE to reach the correct measurement state.
The initial test configurations consist of environmental conditions, test frequencies, and channel bandwidths based on Inter-band con-current V2X configurations specified in Table 5.4.2G.1-2. All of these configurations shall be tested with applicable test parameters for each channel bandwidth, and are shown in table 6.5.1G.2.4.1-1. The details of the uplink and V2X reference measurement channels (RMCs) are specified in Annexes A.2 and A.8.3 respectively. Configurations of PDSCH and PDCCH before measurement are specified in Annex C.2.
Table 6.5.1G.2.4.1-1: Test Configuration Table
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Initial Conditions |
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Test Environment as specified in TS 36.508 [7] subclause 4.1 |
Normal, TL/VL, TL/VH, TH/VL, TH/VH |
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Test Frequencies as specified in TS 36.508 [7] subclause 4.3.1 |
Low range, Mid range, High range |
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Test Channel Bandwidths as specified in 5.4.2G |
Lowest NRB_agg, Highest NRB_agg |
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Test Parameters for Channel Bandwidths |
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Downlink |
Uplink Configuration |
V2X Configuration |
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Ch BW |
Mod’n |
RB allocation |
Mod’n |
RB allocation |
Ch BW |
Mod’n |
PSSCH RB allocation |
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1.4 MHz |
QPSK |
6 |
QPSK |
6 |
10 MHz |
QPSK |
48@2 |
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3 MHz |
QPSK |
15 |
QPSK |
15 |
20 MHz |
QPSK |
96@2 |
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5 MHz |
QPSK |
25 |
QPSK |
25 |
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10 MHz |
QPSK |
50 |
QPSK |
50 |
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15 MHz |
QPSK |
75 |
QPSK |
75 |
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20 MHz |
QPSK |
100 |
QPSK |
100 |
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Note 1: V2X con-current band configurations are checked separately for each band configuration, which applicable aggregated channel bandwidths are specified in Table 5.4.2G.1-2. |
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1. Connect the SS to the UE antenna connectors as shown in TS 36.508 [7] Annex A, Figure A.93a.
2. The parameter settings for the cell are set up according to TS 36.508 [7] subclause 4.4.3.
3. Downlink signals are initially set up according to Annex C.0, C.1, and C.3.0, and uplink signals according to Annex H.1 and H.3.0.
4. The UL and V2X reference measurement channels are set according to Table 6.5.1G.2.4.1-1.
5. Propagation conditions are set according to Annex B.0.
6. Ensure the UE is in State 3A-RF-V2X according to TS 36.508 [7] clause 5.2A.2C. Message content exceptions are defined in clause 6.5.1G.2.4.3.
6.5.1G.2.4.2 Test procedure
1. SS transmits PDSCH via PDCCH DCI format 1A for C_RNTI to transmit the DL RMC according to Table 6.5.1G.2.4.1-1. The SS sends downlink MAC padding bits on the DL RMC.
2. The SS simultaneously sends uplink scheduling information for each UL HARQ process via PDCCH DCI format 0 for C_RNTI to schedule the UL RMC and V2X scheduling information via PDCCH DCI format 5A for SL_V_RNTI to schedule the V2X RMC according to Table 6.5.1G.2.4.1-1. Since the UE has no payload and no loopback data to send the UE sends uplink MAC padding bits on the UL and V2X RMCs.
3. Set the Downlink signal level to the appropriate REFSENS value defined in Table 7.3.5-1. Send continuously uplink power control "up" commands in the uplink scheduling information to the UE to ensure that the UE transmits at PUMAX level for the duration of the test. Configure the UE to transmit PSCCH and PSSCH with the PUMAX level of each test points.
4. Measure the Frequency Error over all component carriers in the V2X con-current band configuration using Global In-Channel Tx-Test (Annex E). On E-UTRA carrier, the TDD slots with transient periods are not under test.
6.5.1G.2.4.3 Message contents
Message contents are according to TS 36.508 [7] subclause 4.6 with the exceptions in subclause 7.3.4.3 and Table 7.3.3-3.
6.5.1G.2.5 Test requirement
The 20 frequency error Δf results for both concurrent bands must fulfil the test requirement:
|Δf| ≤ (0.1 PPM + 15 Hz), f ≤ 3.0GHz
|Δf| ≤ (0.1 PPM + 36 Hz), 4.2GHz <f ≤ 6.0GHz