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4.6.3 Applicability of test configurations for single-band operation
The applicable test configurations are specified in the tables below for each the supported RF configuration, which shall be declared according to clause 4.6. The generation and power allocation for each test configuration is defined in clause 4.7. This clause contains the test configurations for a BS capable of single...
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4.7 RF channels and test models
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4.7.1 RF channels
For the single carrier testing many tests in this TS are performed with appropriate frequencies in the bottom, middle and top channels of the supported frequency range of the BS. These are denoted as RF channels B (bottom), M (middle) and T (top). Unless otherwise stated, the test shall be performed with a single carr...
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4.7.2 Test models
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4.7.2.1 General
The following clauses will describe the A-IoT test models needed for BS type 1-C.
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4.7.2.2 FR1 test models
The set-up of physical channels for transmitter tests shall be according to one of the A-IoT test models (A‑TM) below. A reference to the applicable test model is made within each test. The following general parameters are used by all A-IoT test models: - Duration is 1 radio frame (10 ms) for FDD - The slots are num...
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4.7.2.2.1 A-IoT test model 1.1 (A-TM1.1)
This model shall be used for tests on: - BS output power - Transmit ON/OFF power - Unwanted emissions - Occupied bandwidth - ACLR - Operating band unwanted emissions - Transmitter spurious emissions - Transmitter intermodulation - Receiver spurious emissions Common physical channel parameters are defined in c...
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4.8 Format and interpretation of tests
Each test has a standard format: X Title All tests are applicable to all equipment within the scope of the present document, unless otherwise stated. X.1 Definition and applicability This clause gives the general definition of the parameter under consideration and specifies whether the test is applicable to all equ...
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5 Operating bands and channel arrangement
For the Ambient IoT operating bands specification, their channel bandwidth configurations, as well as channel raster specification, refer to TS 38.194 [23], clause 5 and its relevant clauses.
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6 A-IoT BS transmitter characteristics
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6.1 General
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6.1.1 BS type 1-C
General test conditions for conducted transmitter tests are given in clause 4, including interpretation of measurement results and configurations for testing. BS configurations for the tests are defined in clause 4.5. If a number of single-band connectors have been declared equivalent (D.32), only a representative one...
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6.2 Base station output power
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6.2.1 Definition and applicability
The conducted BS output power requirements are specified at single-band connector, or at multi-band connector. The rated carrier output power of the BS type 1-C shall be as specified in table 6.2.1-1. Table 6.2.1-1: Rated carrier output power limits for BS type 1-C BS class Prated,c,AC Medium Range BS ≤ 38 dBm ...
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6.2.2 Minimum requirement
The minimum requirement applies per single-band connector supporting transmission in the operating band. The minimum requirement for BS type 1-C is defined in TS 38.194 [3], clause 6.2.2.
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6.2.3 Test purpose
The test purpose is to verify the accuracy of the maximum carrier output power across the frequency range and under normal and extreme conditions.
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6.2.4 Method of test
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6.2.4.1 Initial conditions
Test environment: - Normal, see annex B.2, - Extreme, see annexes B.3 and B.5. RF channels to be tested for single carrier: B, M and T; see clause 4.9.1 Under extreme test environment, it is sufficient to test on one NR-ARFCN or one RF bandwidth position, and with one applicable test configuration defined in clause...
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6.2.4.2 Procedure
1) Connect the power measuring equipment to single-band connector(s) under test as shown in annex D.1.1 for BS type 1-C. All connectors not under test shall be terminated. 2) For single carrier set the connector under test to transmit according to the applicable test configuration in clause 4.8 using the corresponding...
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6.2.5 Test requirement
For each single-band connector or multi-band connector under test, the power measured in clause 6.2.4.2 in step 3 shall remain within the values provided in table 6.2.5-1 for normal and extreme test environments, relative to the manufacturer's declared Prated,c,AC for BS type 1-C: Table 6.2.5-1: Test requirement for c...
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6.3 Transmit ON/OFF power
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6.3.1 Transmitter OFF power
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6.3.1.1 Definition and applicability
Transmitter OFF power is defined as the mean power measured over 70/N us filtered with a square filter of bandwidth equal to the transmission bandwidth configuration of the BS (BWConfig) centred on the assigned channel frequency during the transmitter OFF period. N = SCS/15, where SCS is Sub Carrier Spacing in kHz.
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6.3.1.2 Minimum requirement
The minimum requirement for BS type 1-C is in TS 38.194 [3], clause 6.3.1.2.
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6.3.1.3 Test purpose
The purpose of this test is to verify the transmitter OFF power is within the limits of the minimum requirements.
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6.3.1.4 Method of test
Requirement is tested together with transmitter transient period, as described in clause 6.3.2.4.
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6.3.1.5 Test requirements
The conformance testing of transmit OFF power is included in the conformance testing of transmitter transient period; therefore, see clause 6.4.2.5 for test requirements.
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6.3.2 Transmitter transient period
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6.3.2.1 Definition and applicability
The transmitter transient period is the time period during which the transmitter unit is changing from the OFF period to the ON period or vice versa. The transmitter transient period is illustrated in figure 6.3.2.1-1. Figure 6.3.2.1-1: Illustration of the relations of transmitter ON period, transmitter OFF period a...
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6.3.2.2 Minimum requirement
The minimum requirement for BS type 1-C is in TS 38.194 [3], clause 6.3.2.2.
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6.3.2.3 Test purpose
The purpose of this test is to verify the transmitter transient periods are within the limits of the minimum requirements.
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6.3.2.4 Method of test
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6.3.2.4.1 Initial conditions
Test environment: - normal; see annex B.2. RF channels to be tested for single carrier: - M; see clause 4.9.1.
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6.3.2.4.2 Procedure
The minimum requirement is applied to all antenna connectors, they may be tested one at a time or multiple antenna connectorss may be tested in parallel as shown in annex D.1.1 for BS type 1-C. Whichever method is used the procedure is repeated until all antenna connectors necessary to demonstrate conformance have been...
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6.3.2.5 Test requirements
The measured mean power spectral density according to clause 6.3.2.4.2 shall be less than -83 dBm/MHz for carrier frequency f ≤ 3.0 GHz.
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6.4 Transmitted signal quality
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6.4.1 General
Unless otherwise stated, the requirements in clause 6.5 apply during the transmitter ON period.
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6.4.2 Frequency error
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6.4.2.1 Definition and applicability
Frequency error is the measure of the difference between the actual BS transmit frequency and the assigned frequency. The same source shall be used for RF frequency and data clock generation. It is not possible to verify by testing that the data clock is derived from the same frequency source as used for RF generation...
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6.4.2.2 Minimum Requirement
The minimum requirement is in TS 38.194 [3], clause 6.4.1.2.
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6.4.2.3 Test purpose
The test purpose is to verify that frequency error is within the limit specified by the minimum requirement.
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6.4.2.4 Method of test
Requirement is tested together with modulation quality test, as described in clause 6.4.3.
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6.4.2.5 Test Requirements
The modulated carrier frequency of each A-IoT carrier configured by the BS shall be accurate to within the accuracy range given in table 6.4.2.5-1 observed over 1 ms. Table 6.4.2.5-1: Frequency error test requirement BS class Accuracy Medium Range BS ±(0.1 ppm + 12 Hz) The frequency error requirement for A-IoT ...
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6.4.3 Modulation quality
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6.4.3.1 Definition and applicability
Modulation quality include modulation depth, RF Envelop Rise Time, RF Envelop Fall Time and Ripple.
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6.4.3.2 Minimum Requirement
The minimum requirement is in TS 38.194 [3], clause 6.4. 2.
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6.4.3.3 Test purpose
The test purpose is to verify that R2D signal quality is within the limit specified by the minimum requirement across the frequency range and under normal and extreme conditions.
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6.4.3.4 Method of test
Requirement is tested together with modulation quality test, as described in clause 6.4.3.
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6.4.3.4.1 Initial conditions
Test environment: - Normal, see annex B.2, - Extreme, see annexes B.3 and B.5. RF channels to be tested for single carrier: B, M and T; see clause 4.9.1 Under extreme test environment, it is sufficient to test on one NR-ARFCN or one RF bandwidth position, and with one applicable test configuration defined in clause...
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6.4.3.4.2 Procedure
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6.4.3.5 Test requirements
The modulation quality of A-IoT R2D carrier shall be less than the limits in table 6.5.3.5-1. Table 6.4.2-1: A-IoT BS RF envelope parameters R2D Chip duration:Tc Parameter Symbol Value Units M∈ {2,6,12,24} Modulation Depth (A–B)/A >=80-5 % RF Envelope Ripple Ripple_high Ripple_low <=±15 % RF E...
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6.5 Unwanted emissions
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6.5.1 General
Unwanted emissions consist of out-of-band emissions and spurious emissions according to ITU definitions in recommendation ITU-R SM.329 [2]. In ITU terminology, out of band emissions are unwanted emissions immediately outside the channel bandwidth resulting from the modulation process and non-linearity in the transmitte...
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6.5.2.1 Definition and applicability
The occupied bandwidth is the width of a frequency band such that, below the lower and above the upper frequency limits, the mean powers emitted are each equal to a specified percentage /2 of the total mean transmitted power. See also Recommendation ITU-R SM.328 [12]. The value of /2 shall be taken as 0.5%. The occ...
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6.5.2.2 Minimum Requirements
The minimum requirement for BS type 1-C is in TS 38.194 [3] clause 6.6.2
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6.5.2.3 Test purpose
The test purpose is to verify that the emission at the antenna connector does not occupy an excessive bandwidth for the service to be provided and is, therefore, not likely to create interference to other users of the spectrum beyond undue limits.
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6.5.2.4 Method of test
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6.5.2.4.1 Initial conditions
Test environment: Normal; see annex B.2. RF channels to be tested for single carrier: M; see clause 4.9.1. 1) Connect the measurement device to the BS antenna connector as shown in annex D1.1 for BS type 1-C. 2) For a BS declared to be capable of single carrier operation (D.16), start transmission according to the a...
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6.5.2.4.2 Procedure
1) Measure the spectrum emission of the transmitted signal using at least the number of measurement points, and across a span, as listed in table 6.6.2.4.2-1. The selected resolution bandwidth (RBW) filter of the analyser shall be 30 kHz or less. Table 6.5.2.4.2-1: Span and number of measurement points for OBW measure...
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6.5.2.5 Test requirements
The occupied bandwidth for each carrier shall be less than the channel bandwidth as defined in TS 38.194 [3], table 5.3.5-1 for BS type 1-C.
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6.5.3 Adjacent Channel Leakage Power Ratio
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6.5.3.1 Definition and applicability
Adjacent Channel Leakage power Ratio (ACLR) is the ratio of the filtered mean power centred on the assigned channel frequency to the filtered mean power centred on an adjacent channel frequency. The requirements shall apply outside the Base Station RF Bandwidth or Radio Bandwidth whatever the type of transmitter consi...
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6.5.3.2 Minimum requirement
The minimum requirement applies per single-band connector, or per multi-band connector supporting transmission in the operating band. The minimum requirement for BS type 1-C is defined in TS 38.194 [3], clause 6.6.3.3.
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6.5.3.3 Test purpose
To verify that the adjacent channel leakage power ratio requirement shall be met as specified by the minimum requirement.
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6.5.3.4 Method of test
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6.5.3.4.1 Initial conditions
Test environment: Normal; see annex B.2. RF channels to be tested for single carrier: B, M and T; see clause 4.9.1.
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6.5.3.4.2 Procedure
1) Connect the single-band connector or multi-band connector under test to measurement equipment as shown in annex D.1.1 for BS type 1-C. All connectors not under test shall be terminated. The measurement device characteristics shall be: - Measurement filter bandwidth: defined in clause 6.6.3.5. - Detection mode: t...
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6.5.3.5 Test requirements
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6.5.3.5.1 General requirements
The ACLR requirements in clause 6.6.3.5.2 shall apply as described in clauses 6.6.3.5.3 or 6.6.3.5.4.
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6.5.3.5.2 Limits and basic limits
The ACLR is defined with a square filter of bandwidth equal to the transmission bandwidth configuration of the transmitted signal (BWConfig) centred on the assigned channel frequency and a filter centred on the adjacent channel frequency according to the tables below. Table 6.5.3.2-1: Base station ACLR limit BS R2D c...
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6.5.3.5.3 BS type 1-C
The ACLR test requirements for BS type 1-C are given in table 6.6.3.5.2-1 or 6.6.3.5.2-3 applies per antenna connector. Conformance can be shown by meeting the ACLR limit in table 6.6.3.5.2-1 or 6.6.3.5.2-3.
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6.5.4 Operating band unwanted emissions
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6.5.4.1 Definition and applicability
Unless otherwise stated, the operating band unwanted emission (OBUE) limits in FR1 are defined from ΔfOBUE below the lowest frequency of each supported downlink operating band up to ΔfOBUE above the highest frequency of each supported downlink operating band. The values of ΔfOBUE are defined in table 6.6.1‑1 for the NR...
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6.6.4.2 Minimum requirement
The minimum requirement applies per single-band connector, or per multi-band connector supporting transmission in the operating band. The minimum requirement for BS type 1-C is defined in TS 38.104 [2], clause 6.6.4.3.
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6.5.4.3 Test purpose
This test measures the emissions close to the assigned channel bandwidth of the wanted signal, while the transmitter is in operation.
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6.5.4.4 Method of test
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6.5.4.4.1 Initial conditions
Test environment: Normal; see annex B.2. RF channels to be tested for single carrier: B, M and T; see clause 4.9.1. - BRFBW, MRFBW and TRFBW in single-band operation; see clause 4.9.1.
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6.5.4.4.2 Procedure
1) Connect the single-band connector under test to measurement equipment as shown in annex D.1.1 for BS type 1-C. All connectors not under test shall be terminated. As a general rule, the resolution bandwidth of the measuring equipment should be equal to the measurement bandwidth. However, to improve measurement accu...
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6.5.4.5 Test requirements
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6.5.5 Transmitter spurious emissions
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6.6.5.1 Definition and applicability
The transmitter spurious emission limits shall apply from 9 kHz to 12.75 GHz, excluding the frequency range from ΔfOBUE below the lowest frequency of each supported downlink operating band, up to ΔfOBUE above the highest frequency of each supported downlink operating band, where the ΔfOBUE is defined in table 6.6.1. Fo...
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6.6.5.2 Minimum requirement
The minimum requirement applies per single-band connector supporting transmission in the operating band. The minimum requirement for BS type 1-C is defined in TS 38.104 [2], clause 6.6.5.3.
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6.6.5.3 Test purpose
This test measures conducted spurious emissions while the transmitter is in operation.
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6.6.5.4 Method of test
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6.6.5.4.1 Initial conditions
Test environment: Normal; see annex B.2. RF channels to be tested for single carrier: - B when testing the spurious emissions below FDL_low - ΔfOBUE, - T when testing the spurious emissions above FDL_high + ΔfOBUE; see clause 4.9.1.
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6.6.5.4.2 Procedure
1) Connect the single-band connector under test to measurement equipment as shown in annex D.1.1 for BS type 1-C. All connectors not under test shall be terminated. 2) Measurements shall use a measurement bandwidth in accordance to the conditions in clause 6.6.5.5. The measurement device characteristics shall be: -...
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6.6.5.5 Test requirements
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6.6.5.5.1 Basic limits
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6.6.5.5.1.1 Tx spurious emissions
The limits of either table 6.6.5.5.1.1-1 (Category A limits) or table 6.6.5.5.1.1-2 (Category B limits) shall apply. The application of either Category A or Category B limits shall be the same as for operating band unwanted emissions in clause 6.6.4, and as declared by the manufacturer (D.4). Table 6.6.5.5.1.1-1: Gene...
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6.6.5.5.1.2 Protection of the BS receiver of own or different BS
This requirement shall be applied for NR FDD operation in order to prevent the receivers of the BSs being desensitised by emissions from a BS transmitter. It is measured at the transmit antenna connector for BS type 1-C or at the TAB connector for BS type 1-H for any type of BS which has common or separate Tx/Rx antenn...
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6.6.5.5.1.3 Additional spurious emissions requirements
These requirements may be applied for the protection of system operating in frequency ranges other than the BS downlink operating band. The limits may apply as an optional protection of such systems that are deployed in the same geographical area as the BS, or they may be set by local or regional regulation as a mandat...
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6.6.5.5.1.4 Co-location with other base stations
These requirements may be applied for the protection of other BS receivers when GSM900, DCS1800, PCS1900, GSM850, CDMA850, UTRA FDD, UTRA TDD, E-UTRA and/or NR BS are co-located with a BS. The requirements assume a 30 dB coupling loss between transmitter and receiver and are based on co-location with base stations of ...
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6.6.5.5.2 BS type 1-C
The Tx spurious emissions for BS type 1-C for each antenna connector shall not exceed the basic limits specified in clause 6.6.5.5.1. For Band n41 and n90 operation in Japan, the sum of the spurious emissions over all antenna connectors for BS type 1-C shall not exceed the basic limits defined in clause 6.6.5.5.1.
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7 A-IoT BS receiver characteristics
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7.1 General
Conducted receiver characteristics are specified at the antenna connector for BS type 1-C, with full complement of transceivers for the configuration in normal operating condition. Unless otherwise stated, the following arrangements apply for conducted receiver characteristics requirements in clause 7: - Requirements...
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7.2.1 Definition and applicability
The reference sensitivity power level PREFSENS is the minimum mean power received at the antenna connector for BS type 1-C at which a BLER requirement shall be met for a specified reference measurement channel.
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7.2.2 Minimum requirement for BS type 1-C
The minimum requirement for BS type 1-C is in TS 38.194 [23], clause 7.2.2.
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7.2.3 Test purpose
To verify that for the BS type 1-C receiver and each BS type 1-H TAB connector at the reference sensitivity level the throughput requirement shall be met for a specified reference measurement channel.
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7.2.4 Method of test
7.2.4.1 Initial conditions Test environment: - Normal; see annex B.2. - Extreme, see annexes B.3 and B.5. RF channels to be tested for single carrier: B, M and T; see clause 4.9.1. Under extreme test environment, the test shall be performed on each of B, M and T under extreme power supply conditions as defined ...
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7.2.4.2 Procedure
The minimum requirement is applied to all connectors under test. For BS type 1-C, the procedure is repeated until all antenna connectors necessary to demonstrate conformance have been tested; see clause 7.1. 1) Connect the connector under test to measurement equipment as shown in annex D.2.1 for BS type 1-C . 2) Fo...