6.1 General

37.145-13GPPActive Antenna System (AAS) Base Station (BS) conformance testingPart 1: conducted conformance testingRelease 17TS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

General test conditions for 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 4.8.

If a number of TAB connectors have been declared equivalent (see table 4.10-1, D6.70), only a representative one is necessary to be tested to demonstrate conformance.

In clause 6.6.3.1, if representative TAB connectors are used then per connector criteria (i.e. option 2) shall be applied.

The manufacturer shall declare the minimum number of supported geographical cells (i.e. geographical areas). The minimum number of supported geographical cells (N_cells) relates to the AAS BS setting with the minimum amount of cell splitting supported with transmission on all TAB connectors supporting the operating band. The manufacturer shall also declare TAB connector TX min cell groups. Every TAB connector supporting transmission in an operating band shall map to one TAB connector TX min cell group supporting the same operating band. The mapping of TAB connectors to cells is implementation dependent.

The number of active transmitter units that are considered when calculating the emissions limit (N_{TXU, counted}) for an AAS BS is calculated as follows:

N_{TXU, counted} = min(N_TXU,active , 8·N_cells) for E-UTRA single RAT AAS BS and MSR AAS BS (except UTRA only MSR AAS BS); and

N_{TXU, counted} = min(N_TXU,active, 4·N_cells) for UTRA single RAT AAS BS and UTRA only MSR AAS BS

Further:

N_{TXU,countedpercell}= N_TXU,counted/N_cells

N_{TXU,countedpercell} is used for scaling the basic limits as described in clause 6.6.

NOTE: N_TXU,active depends on the actual number of active transmitter units and is independent to the declaration of N_cells.

Any transmitter test requirement specified for Band 46 operation in TS 36.104 [4] for E-UTRA, or in TS 37.104 [5] for E-UTRA in MSR operation, and referred in clause 6, is not applicable for AAS BS.

Any transmitter test requirement specified for NB-IoT in-band, NB-IoT guard band, or standalone NB-IoT operation in TS 36.141 [14] for E-UTRA with NB-IoT (in-band or guard band) or for standalone NB-IoT, or in TS 37.141 [13] for E-UTRA with NB-IoT or standalone NB-IoT in MSR operation, and referred in clause 6, is not applicable for AAS BS.