9.2 Radiated transmit power

37.1053GPPActive Antenna System (AAS) Base Station (BS) transmission and receptionRelease 17TS

9.2.1 General

An AAS BS is declared to support one or more beams. Radiated transmit power is defined as the EIRP level for a declared beam at a specific beam peak direction.

For each beam, the requirement is based on declaration of a beam identity, reference beam direction pair, beamwidth, rated beam EIRP, OTA peak directions set, the beam direction pairs at the maximum steering directions and their associated rated beam EIRP and beamwidth(s).

For a declared beam and beam direction pair, the rated beam EIRP level is the maximum power that the base station is declared to radiate at the associated beam peak direction during the transmitter ON period.

For each beam peak direction associated with a beam direction pair within the OTA peak directions set, a specific rated beam EIRP level may be claimed. Any claimed value shall be met within the accuracy requirement as described below. Rated beam EIRP is only required to be declared for the beam direction pairs subject to conformance testing as detailed in TS 37.145-2 [30].

NOTE 1: OTA peak directions set is set of beam peak directions for which the EIRP accuracy requirement is intended to be met. The beam peak directions are related to a corresponding contiguous range or discrete list of beam centre directions by the beam direction pairs included in the set.

NOTE 2: A beam direction pair is data set consisting of the beam centre direction and the related beam peak direction.

NOTE 3: A declared EIRP value is a value provided by the manufacturer for verification according to the conformance specification declaration requirements, whereas a claimed EIRP value is provided by the manufacturer to the equipment user for normal operation of the equipment and is not subject to formal conformance testing.

9.2.2 Minimum requirement for MSR operation

For each declared beam, in normal conditions, for any specific beam peak direction associated with a beam direction pair within the OTA peak directions set, a manufacturer claimed EIRP level in the corresponding beam peak direction shall be achievable to within +2,2 dB and -2,2 dB of the claimed value.

For each declared beam, in extreme conditions, for any specific beam peak direction associated with a beam direction pair within the OTA peak directions set, a manufacturer claimed EIRP level in the corresponding beam peak direction shall be achievable to within +2,7 dB and -2,7 dB of the claimed value.

In certain regions, the minimum requirement for normal conditions may apply also for some conditions outside the range of conditions defined as normal.

9.2.3 Minimum requirement for single RAT UTRA operation

The minimum requirement for UTRA FDD and UTRA TDD 1,28Mcps option carrier radiated transmit power is in each case same as defined in subclause 9.2.2.

9.2.4 Minimum requirement for single RAT E-UTRA operation

The minimum requirement for E-UTRA carrier radiated transmit power is same as defined in subclause 9.2.2.