7.9 Spurious emissions
36.521-13GPPEvolved Universal Terrestrial Radio Access (E-UTRA)Part 1: Conformance testingRadio transmission and receptionRelease 17TSUser Equipment (UE) conformance specification
The spurious emissions power is the power of emissions generated or amplified in a receiver that appear at the UE antenna connector.
7.9.1 Test Purpose
Test verifies the UE’s spurious emissions meet the requirements described in clause 7.9.3.
Excess spurious emissions increase the interference to other systems.
7.9.2 Test Applicability
This test applies to all types of E-UTRA UE release 8 and forward.
7.9.3 Minimum Conformance Requirements
The power of any narrow band CW spurious emission shall not exceed the maximum level specified in Table 7.9.3-1
Table 7.9.3-1: General receiver spurious emission requirements
|
Frequency Band |
Measurement Bandwidth |
Maximum level |
Note |
|
30MHz ≤ f < 1GHz |
100 kHz |
-57 dBm |
|
|
1GHz ≤ f ≤ 12.75 GHz |
1 MHz |
-47 dBm |
|
|
12.75 GHz ≤ f ≤ 5th harmonic of the upper frequency edge of the DL operating band in GHz |
1 MHz |
-47 dBm |
Note 1 |
|
Note 1: Applies only for Band 22, Band 42, Band 43 and Band 48. Note 2: Unused PDCCH resources are padded with resource element groups with power level given by PDCCH_RA/RB as defined in Annex C.3.1. |
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The normative reference for this requirement is TS 36.101 [2] clause 7.9.1.
7.9.4 Test Description
7.9.4.1 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 E-UTRA bands specified in table 5.4.2.1-1. All of these configurations shall be tested with applicable test parameters for each channel bandwidth, and are shown in table 7.9.4.1-1. The details of the downlink and uplink reference measurement channels (RMCs) are specified in Annexes A.3 and A.2 respectively.
Table 7.9.4.1-1: Test Configuration Table
|
Initial Conditions |
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|
Test Environment as specified in TS 36.508[7] subclause 4.1 |
NC |
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Test Frequencies as specified in TS36.508 [7] subclause 4.3.1 |
Low range, Mid range, High range |
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Test Channel Bandwidths as specified in TS 36.508 [7] subclause 4.3.1 |
Highest |
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Test Parameters for Channel Bandwidths |
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|
Downlink Configuration |
Uplink Configuration |
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|
Ch BW |
Mod’n |
RB allocation |
Mod’n |
RB allocation |
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|
FDD |
TDD |
FDD |
TDD |
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|
1.4MHz |
QPSK |
0 |
0 |
QPSK |
0 |
0 |
|
3MHz |
QPSK |
0 |
0 |
QPSK |
0 |
0 |
|
5MHz |
QPSK |
0 |
0 |
QPSK |
0 |
0 |
|
10MHz |
QPSK |
0 |
0 |
QPSK |
0 |
0 |
|
15MHz |
QPSK |
0 |
0 |
QPSK |
0 |
0 |
|
20MHz |
QPSK |
0 |
0 |
QPSK |
0 |
0 |
|
Note 1: Test Channel Bandwidths are checked separately for each E-UTRA band. The applicable channel bandwidths are specified in Table 7.3.3-2. |
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1. Connect a spectrum analyzer (or other suitable test equipment) to the UE antenna connectors as shown in TS 36.508 [7] Annex A, Figure A.8.
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 C0, C.1 and C.3.1.
4. The DL Reference Measurement channels are set according to Table 7.9.4.1-1.
5. Propagation conditions are set according to Annex B.0.
6. Ensure the UE is in State 3A-RF according to TS 36.508 [7] clause 5.2A.2. Message contents are defined in clause 7.9.4.3.
7.9.4.2 Test Procedure
1. Sweep the spectrum analyzer (or equivalent equipment) over a frequency range and measure the average power of spurious emission.
2. Repeat step 1 for all E-UTRA Rx antennas of the UE.
7.9.4.3 Message Contents
Message contents are according to TS 36.508 [7] subclause 4.6.
7.9.5 Test Requirement
The measured spurious emissions derived in step 1), shall not exceed the maximum level specified in Table 7.9.5-1.
Table 7.9.5-1: General receiver spurious emission requirements
|
Frequency Band |
Measurement Bandwidth |
Maximum level |
Note |
|
30MHz ≤ f < 1GHz |
100 kHz |
-57 dBm |
|
|
1GHz ≤ f ≤ 12.75 GHz |
1 MHz |
-47 dBm |
|
|
12.75 GHz ≤ f ≤ 5th harmonic of the upper frequency edge of the DL operating band in GHz |
1 MHz |
-47 dBm |
Note 1 |
|
Note 1: Applies only for Band 22, Band 42, Band 43 and Band 48. Note 2: Unused PDCCH resources are padded with resource element groups with power level given by PDCCH_RA/RB as defined in Annex C.3.1. |
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