7.1 General

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

Unless otherwise stated, the receiver characteristics are specified at the AAS BS TAB connector with full complement of transceivers for the configuration in normal operating condition.

The manufacturer shall declare the minimum number of supported geographical cells (i.e. geographical areas) in clause 4.10. The minimum number of supported geographical cells (Ncells) relates to the AAS BS setting with minimum amount of cell splitting. The manufacturer shall also declare TAB connector RX min cell groups for this minimum number of cells configuration. Every TAB connector supporting reception in an operating band shall map to one TAB connector RX min cell group supporting the same. The mapping of TAB connectors to cells is implementation dependent.

The number of active receiver units that are considered when calculating the emission limit (NRXU,counted) for an AAS base station is calculated as follows:

– NRXU,counted = min(NRXU,active, 8 ·Ncells) for E-UTRA single RAT AAS BS and MSR AAS BS (excluding UTRA only MSR AAS BS).

And

– NRXU,counted = min(NRXU, active, 4 ·Ncells) for UTRA single RAT AAS BS and UTRA only MSR AAS BS.

Further:

– NRXU,countedpercell = NRXU,counted/Ncells

NRXU,countedpercell is used for scaling the basic limits as described in clause 7.6.

NOTE: NRXU,active is the number of actually active receiver units and is independent to the declaration of Ncells.

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

In clause 7.6.5.1, if representative TAB connectors are used then per connector criteria (option 2) shall be applied.

Any receiver 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. The requirements for co-location blocking for Band 46 are applicable for AAS BS.

Any receiver requirement specified for NB-IoT in-band, NB-IoT guard band, or standalone NB-IoT operation in TS 36.104 [4] for E-UTRA with NB-IoT (in-band or guard band) or for standalone NB-IoT, or in TS 37.104 [5] for E-UTRA with NB-IoT or standalone NB-IoT in MSR operation, and referred in clause 7, is not applicable for AAS BS.