Active Antenna System (AAS) Base Station (BS) conformance testing; Part 2: radiated conformance testing
The present document specifies radiated test methods and conformance requirements for 2 types of AAS BS; hybrid requirements set which specify requirements for a hybrid AAS BS with both a conducted and a radiated interface and OTA requirements set which specify requirements for an OTA AAS BS which has a radiated interface only.
The hybrid AAS BS requirements are specified for E-UTRA AAS Base Station (BS), the FDD mode of UTRA AAS Base Station (BS), the 1,28 Mcps TDD mode of UTRA AAS Base Station (BS) in single RAT and any MSR AAS Base Station (BS) implementation of these RATs including NR operation.
The OTA AAS BS requirements are specified for E-UTRA AAS Base Station (BS), the FDD mode of UTRA AAS Base Station (BS), in single RAT and any MSR AAS Base Station (BS) implementation of these RATs and/or NR.
The requirements have been derived from, and are consistent with non-AAS BS specifications in TS 25.104 [2], TS 25.105 [3], TS 36.104 [4] or TS 37.104 [5] and where applicable with the NR specification TS 38.104 [33]. The technical specification TS 37.145 is in 2 parts, part TS 37.145-1 [9] covers conducted requirements and part TS 37.145-2 (the present document) covers radiated requirements.
The present document does not establish radiated test methods and conformance requirements for Band 46 operation as it is not supported by AAS BS. Conducted Band 46 test requirements are still applicable for AAS BS for protection of and against Band 46 operation, as specified in TS 37.145-1 [9].
The present document does not establish minimum RF characteristics or minimum performance requirements for Narrow-Band Internet of Things (NB-IoT) in band, NB-IoT guard band, or standalone NB-IoT operation, for AAS BS in single RAT E-UTRA operation or in MSR operation using E-UTRA.