scope:

The present document covers the assessment of UTRA TDD, UTRA FDD, E-UTRA, NR and Multi-Standard Radio (MSR) Active Antenna Systems Base Stations in respect of Electromagnetic Compatibility (EMC).

NOTE: Whenever the UTRA AAS BS is referred in the following section, UTRA TDD and UTRA FDD shall be considered, unless otherwise stated.

The present document specifies the applicable test conditions, performance assessment and performance criteria for base stations in the following categories:

- Active Antenna System Base Station for UTRA TDD, UTRA FDD, E-UTRA, NR and MSR meeting the conducted requirements of 3GPP TS 37.105 [2], with conformance demonstrated by compliance to 3GPP TS 37.145-1 [3],

- Active Antenna System Base Station for UTRA FDD, E-UTRA, NR and MSR meeting the OTA requirements of 3GPP TS 37.105 [2], with conformance demonstrated by compliance to 3GPP TS 37.145-2 [10].

The present document does not cover ancillary equipment requirements, where ancillary equipment is not incorporated in the radio equipment and can be assessed on a stand-alone basis, as declared by the manufacturer. Ancillary equipment EMC requirements are still applicable to the AAS BS and are covered by other EMC specifications in TS 25.113 [5], TS 36.113 [6], TS 37.113 [4] and TS 38.113 [30].

The present document does not specify test conditions, performance assessment and performance criteria for the 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 as defined in 3GPP TS 36.113 [6], or for AAS BS in MSR operation using E-UTRA as defined in 3GPP TS 37.113 [4].

The present document does not specify test conditions, performance assessment and performance criteria for Band 46 operation as it is not supported by AAS BS.

The scope of the present document is twofold:

- Requirement, procedures and values of an hybrid AAS BS with TAB connectors for every transceiver unit at the transceiver array boundary (TAB), subject to conducted requirements,

- Requirements, procedures and values of an OTA AAS BS without TAB connectors and relying in the radiated interface, subject to radiated requirements..

The electromagnetic environment classification used in the present document refers to the residential, commercial and light industrial environment classification used in IEC 61000-6-1 [7] and IEC 61000-6-3 [8].

The EMC requirements have been selected to ensure an adequate level of compatibility for apparatus at residential, commercial and light industrial environments. The levels, however, do not cover extreme cases which may occur in any location but with low probability of occurrence.