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ANNEX

PARAMETERS REFERRED TO IN ARTICLE 2(1)

A.   DEFINITIONS

Active antenna systems (AAS) means a base station and an antenna system where the amplitude and/or phase between antenna elements is continually adjusted resulting in an antenna pattern that varies in response to short term changes in the radio environment. This excludes long-term beam shaping such as fixed electrical down tilt. In AAS base stations the antenna system is integrated as part of the base station system or product.

Non-active antenna systems (non-AAS) means a base station and an antenna system that provides one or more antenna connectors, which are connected to one or more separately designed passive antenna elements to radiate radio waves. The amplitude and phase of the signals to the antenna elements is not continually adjusted in response to short term changes in the radio environment.

Equivalent isotropically radiated power (EIRP) is the product of the power supplied to the antenna and the antenna gain in a given direction relative to an isotropic antenna (absolute or isotropic gain).

Total radiated power (TRP) is a measure of how much power a composite antenna radiates. It equals the total conducted power input into the antenna array system less any losses in the antenna array system. TRP means the integral of the power transmitted in different directions over the entire radiation sphere as shown in the formula:

where P(θ,φ) is the power radiated by an antenna array system in direction (θ,φ) given by the formula:

P(θ, φ) = PTxg(θ, φ)

where PTx denotes the conducted power (measured in Watts), which is input into the array system, and g(θ,φ) denotes the array system’s directional gain along the (θ, φ) direction.

B.   GENERAL PARAMETERS

Within the paired terrestrial 2 GHz band, the frequency arrangement shall be as follows:

C.   TECHNICAL CONDITIONS FOR BASE STATIONS – BLOCK EDGE MASK

The following technical parameters for base stations called Block Edge Mask (BEM) are an essential component of conditions necessary to ensure coexistence between neighbouring networks, in the absence of bilateral or multilateral agreements between operators of such neighbouring networks. Less stringent technical parameters, if agreed among all affected operators of such networks, may also be used provided that these operators continue to comply with the technical conditions applicable for the protection of other services, applications or networks and with obligations resulting from cross-border coordination.

The BEM consists of several elements given in Table 1. The in-block power limit is applied to a block assigned to an operator. The baseline power limit, designed to protect the spectrum of other operators, and the transitional region power limit, enabling filter roll-off from the in-block to the baseline power limit represent out-of-block elements.

Power limits are provided separately for non-AAS and AAS. For non-AAS, the power limits apply to the mean EIRP. For AAS, the power limits apply to the mean TRP ( 4 ). The mean EIRP or mean TRP are measured by averaging over a time interval and over a measurement frequency bandwidth. In the time domain, the mean EIRP or mean TRP is averaged over the active portions of signal bursts and corresponds to a single power control setting. In the frequency domain, the mean EIRP or mean TRP is determined over the measurement frequency bandwidth as given in Tables 2, 3 and 4 below ( 5 ). In general, and unless stated otherwise, the BEM power limits correspond to the aggregate power radiated by the relevant device including all transmit antennas, except in the case of baseline and transition requirements for non-AAS base stations, which are specified per antenna.

Block Edge Mask (BEM)

Figure
Example of base station BEM elements and power limits

Explanatory note to Table 2:

The corresponding in-block TRP limit is determined following guidelines given in ETSI TS 138 104 V15.6.0, Annex F, sections F.2 and F.3, on the basis of an antenna gain of 17 dBi and a total of eight beam forming antenna elements (scaling factor of 9 dB):

65 dBm/(5 MHz) – 17 dBi + 9 dB = 57 dBm/(5 MHz).

Explanatory note to Tables 3 and 4:

In alignment with the standardisation of unwanted emission conducted power (TRP) for AAS base stations in ETSI TS 138 104 (V15.6.0), Annex F, sections F.2 and F.3, the out-of-block TRP limits are set to a value that corresponds to a total of eight beam forming antenna elements, resulting in 8 dB difference between AAS and non-AAS as for the in-block case.

D.   TECHNICAL CONDITIONS FOR TERMINAL STATIONS

Explanatory note to Table 5:

Member States may relax this limit for specific deployments, e.g. fixed terminal stations in rural areas provided that protection of other services, networks and applications is not compromised and cross-border obligations are fulfilled.