5 Performance assessment

37.1143GPPActive Antenna System (AAS) Base Station (BS) Electromagnetic Compatibility (EMC)Release 17TS

5.1 General

The following information shall be recorded in or annexed to the test report:

– the primary functions of the radio equipment to be tested during and after the EMC testing;

– the intended functions of the radio equipment which shall be in accordance with the documentation accompanying the equipment;

– the method to be used to verify that a communications link is established and maintained;

– the user-control functions and stored data that are required for normal operation and the method to be used to assess whether these have been lost after EMC stress;

– the ancillary equipment to be combined with the radio equipment for testing (where applicable);

– the information about ancillary equipment intended to be used with the radio equipment;

– information about the common and/or RAT-specific active RF components and other HW blocks for a communication link in AAS BS supporting more than one RAT;

– information about the common and/or band-specific active RF components and other HW blocks for a communication link in AAS BS capable of multi-band operation;

– an exhaustive list of ports (and RIBs), classified as either power or signal/control. Power ports shall further be classified as AC or DC power.

A communication link used by more than one RAT or more than one operating band, shall be assessed on all RATs and operating bands. Communication link(s) and/or radio performance parameters for the RATs and operating bands can during the test be assessed simultaneously or separately for each RAT and band, depending on the test environment capability.

NOTE 1: The present document does not cover ancillary equipment requirements. However, the ancillary equipment EMC requirements are still applicable to the AAS BS and for the ancillary equipment performance assessment the appropriate non-AAS specifications in TS 25.113 [5], TS 36.113 [6], TS 37.113 [4] or TS 38.113 [30] shall be referred.

NOTE 2: The NB-IoT operation is not supported by AAS BS.

5.2 Assessment of performance in Downlink

In the immunity tests, the output of the transmitter shall be connected (via port for hybrid AAS BS, or via RIB for OTA AAS BS) to test equipment which meets the requirements for the performance assessment of RAT and bearer used in the immunity tests according to the following:

– BLER assessment in TS 25.102 [26] in case of UTRA TDD

– BLER assessment in TS 25.101 [27] in case of UTRA FDD

– Throughput assessment in TS 36.101 [28] in case of E-UTRA

– Throughput assessment in TS 38.101-4 [34] in case of NR

The level of the signal supplied to the equipment should be within the range for which the assessment of throughput is not impaired. Power control shall be OFF during the immunity testing.

5.3 Assessment of performance in Uplink

In the immunity tests, the performance in the uplink shall be monitored at a telecommunications port(s) by using suitable test equipment according to the following:

– The value of the throughput shall be monitored in case of E-UTRA or in case of NR

– The value of the BLER shall be monitored in case of UTRA FDD or in case of UTRA TDD