ANNEX
‘ANNEX
PARAMETERS REFERRED TO IN ARTICLE 2
A. GENERAL PARAMETERS
1.
The preferred duplex mode of operation in the 3 400-3 600 MHz sub-band shall be Time Division Duplex (TDD).
2.
Member States may alternatively implement Frequency Division Duplex (FDD) mode of operation in the 3 400-3 600 MHz sub-band for the purpose of:
(a)
ensuring greater efficiency of spectrum use, such as when sharing with existing rights of use during a co-existence period or implementing market-based spectrum management; or
(b)
protecting existing uses or avoiding interference; or
(c)
coordination with non-EU countries.
Where the FDD mode of operation is implemented, the duplex spacing shall be 100 MHz with terminal station transmission (FDD uplink) located in the lower part of the band starting at 3 410 MHz and finishing at 3 490 MHz and base station transmission (FDD downlink) located in the upper part of the band starting at 3 510 MHz and finishing at 3 590 MHz.
3.
The duplex mode of operation in the 3 600-3 800 MHz sub-band shall be Time Division Duplex.
4.
The assigned block sizes shall be in multiples of 5 MHz. The lower frequency limit of an assigned block shall be aligned with or spaced at multiples of 5 MHz from the relevant sub-band edge ( 1 ) . Depending on the duplex mode of operation the relevant sub-band edges are: 3 400 MHz and 3 600 MHz for TDD; 3 410 MHz and 3 510 MHz for FDD.
5.
Base station and terminal station transmission within the 3 400-3 800 MHz band shall be in compliance with the Block Edge Mask in this Annex.
B. 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 the operators of such networks, may also be used.
The BEM consists of several elements given in Table 1, both for the 3 400-3 600 MHz and the 3 600-3 800 MHz sub-band. The baseline power limit, designed to protect the spectrum of other operators, and the transitional region power limits, enabling filter roll-off from the in-block to the baseline power limit represent out-of-block elements. The guard bands apply only in the case of using FDD in the 3 400-3 600 MHz sub-band. The BEM is applicable to base stations with different power levels (typically referred to as macro, micro, pico and femto base stations ( 2 ) ).
Tables 2 to 6 contain the power limits for the different BEM elements. The in-block power limit is applied to a block owned by an operator. Power limits are provided also for guard bands and for the protection of radar operation below 3400 MHz.
The frequency ranges in Tables 1 to 6 depend on the duplex mode chosen for the 3 400-3 600 MHz sub-band (TDD or alternatively FDD). P Max is the maximum carrier power for the base station in question, measured as EIRP ( 3 ) . Synchronized operation means operation of TDD in two different networks where no simultaneous uplink and downlink transmissions occur, as defined in applicable standards.
To obtain a BEM for a specific block, the BEM elements that are defined in Table 1 are combined in the following steps:
1.
In-block power limit is used for the block assigned to the operator.
2.
Transitional regions are determined, and corresponding power limits are used. The transitional regions may overlap with guard bands, in which case transitional region power limits are used.
3.
For the remaining spectrum assigned to FDD or TDD, baseline power limits are used.
4.
For the remaining guard band spectrum, guard band power limits are used.
5.
For spectrum below 3 400 MHz, one of the additional baseline power limits is used.
The Figure provides an example of the combination of different BEM elements.
In the case of unsynchronized TDD networks, the compliance of two adjacent operators with the BEM requirements could be achieved by introducing frequency separation (e.g. through the authorisation process at national level) between the block edges of both operators. As another option, the so-called restricted blocks may be introduced for two adjacent operators which would require them to limit the power level used in the upper- or lowermost portions of their assigned spectrum blocks ( 4 ) .
Table 1
Definition of BEM elements
BEM element
Definition
In-block
Refers to a block for which the BEM is derived.
Baseline
Spectrum used for TDD, FDD uplink or FDD downlink, with the exception of the block assigned to the operator and the corresponding transitional regions.
Transitional region
For FDD downlink blocks, the transitional region applies 0 to 10 MHz below and 0 to 10 MHz above the block assigned to the operator.
For TDD blocks, the transitional region applies 0 to 10 MHz below and 0 to 10 MHz above the block assigned to the operator. The transitional region applies to adjacent TDD blocks assigned to other operators if networks are synchronised, or to spectrum in-between adjacent TDD blocks that are separated by 5 or 10 MHz. Transitional regions do not apply to adjacent TDD blocks assigned to other operators, if networks are not synchronised.
The transitional region does not apply below 3 400 MHz or above 3 800 MHz.
Guard bands
The following guard bands apply in case of an FDD allocation:
3 400 -3 410 , 3 490 -3 510 (duplex gap) and 3 590 -3 600 MHz
In case of overlap between transitional regions and guard bands, transitional power limits are used.
Additional baseline
Spectrum below 3 400 MHz.
Table 2
In-block power limit
BEM element
Frequency range
Power limit
In-block
Block assigned to the operator
Not obligatory.
In case an upper bound is desired by an administration, a value must be applied which does not exceed 68 dBm/5 MHz per antenna.
Explanatory note to Table 2
For femto base stations, power control should be applied to minimize interference to adjacent channels. The requirement on power control for femto base stations results from the need to reduce interference from equipment that may be deployed by consumers and may thus not be coordinated with surrounding networks.
Table 3
Baseline power limits
BEM element
Frequency range
Power limit
Baseline
FDD downlink (3 510 -3 590 MHz).
Synchronized TDD blocks (3 400 -3 800 MHz or 3 600 -3 800 MHz).
Min(P Max — 43,13) dBm/5 MHz EIRP per antenna
Baseline
FDD uplink (3 410 -3 490 MHz).
Unsynchronised TDD blocks (3 400 -3 800 MHz or 3 600 -3 800 MHz).
– 34 dBm/5 MHz EIRP per cell ( *1 )
Explanatory note to Table 3
The baseline for FDD downlink and synchronised TDD is expressed by combining attenuation relative to the maximum carrier power with a fixed upper limit. The stricter of the two requirements applies. The fixed level provides an upper bound on the interference from a base station. When two TDD blocks are synchronized, there will be no interference between base stations. In this case, the same baseline as for the FDD downlink region is used.
The baseline power limit for FDD uplink and unsynchronised TDD is expressed as a fixed limit only.
Table 4
Transitional region power limits
BEM element
Frequency range
Power limit
Transitional region
– 5 to 0 MHz offset from lower block edge or
0 to 5 MHz offset from upper block edge
Min(P Max — 40,21) dBm/5 MHz EIRP per antenna
Transitional region
– 10 to – 5 MHz offset from lower block edge or
5 to 10 MHz offset from upper block edge
Min(P Max — 43,15) dBm/5 MHz EIRP per antenna
Explanatory note to Table 4
The transitional region power limits are defined to enable the reduction of power from the in-block level to the baseline or guard band levels. The requirements are expressed as attenuation relative to the maximum carrier power, combined with a fixed upper limit. The stricter of the two requirements applies.
Table 5
Guard band power limits for FDD
BEM element
Frequency range
Power limit
Guard band
3 400 -3 410 MHz
– 34 dBm/5 MHz EIRP per cell
Guard band
3 490 -3 500 MHz
– 23 dBm/5 MHz per antenna port
Guard band
3 500 -3 510 MHz
Min(P Max — 43,13) dBm/5 MHz EIRP per antenna
Guard band
3 590 -3 600 MHz
Min(P Max — 43,13) dBm/5 MHz EIRP per antenna
Explanatory note to Table 5
For the guard band 3 400-3 410 MHz, the power limit is chosen to be the same as the baseline in the adjacent FDD uplink (3 410-3 490 MHz). For the guard bands 3 500-3 510 MHz and 3 590-3 600 MHz, the power limit is chosen to be the same as the baseline in the adjacent FDD downlink (3 510-3 590 MHz). For the guard band 3 490-3 500 MHz, the power limit is based on the spurious emission requirement of – 30 dBm/MHz at the antenna port converted to 5 MHz bandwidth.
Table 6
Base station additional baseline power limits for country specific cases
Case
BEM element
Frequency range
Power limit
A
Union countries with military radiolocation systems below 3 400 MHz
Additional Baseline
Below 3 400 MHz for both TDD and FDD designation ( *2 )
– 59 dBm/MHz EIRP ( *3 )
B
Union countries with military radiolocation systems below 3 400 MHz
Additional Baseline
Below 3 400 MHz for both TDD and FDD designation ( *2 )
– 50 dBm/MHz EIRP ( *3 )
C
Union countries without adjacent band usage or with usage that does not need extra protection
Additional Baseline
Below 3 400 MHz for both TDD and FDD designation
Not applicable
Explanatory note to Table 6
The additional baseline power limits reflect the need for protection for military radiolocation in some countries. Cases A, B and C can be applied per region or country so that the adjacent band may have different levels of protection in different geographical areas or countries, depending on the deployment of the adjacent band systems. Other mitigation measures like geographical separation, coordination on a case-by-case basis or an additional guard band may be necessary for a TDD mode of operation. The additional baseline power limits given in Table 6 are applicable only to outdoor cells. In the case of an indoor cell, the power limits can be relaxed on a case by case basis. For terminal stations, other mitigation measures may be necessary such as geographical separation or an additional guard band for both the FDD and TDD mode of operation.
Figure
Example for combining BEM elements for base stations for an FDD block starting at 3 510 MHz ( *4 )
C. TECHNICAL CONDITIONS FOR TERMINAL STATIONS
Table 7
In-block requirement — terminal station BEM in-block power limit
Maximum in-block power ( *5 )
25 dBm
Member States may relax the limit set out in Table 7 under certain circumstances, for example fixed terminal stations, provided that protection and continued operation of other existing use in the 3 400-3 800 MHz band is not compromised and cross-border obligations are fulfilled.’
( 1 ) If assigned blocks need to be offset to accommodate other existing users, a raster of 100 kHz must be used. Narrower blocks can be defined adjacent to other users, to allow efficient use of spectrum.
( 2 ) These terms are not uniquely defined and refer to cellular base stations with different power levels, which decrease in the following order: macro, micro, pico, femto, In particular, femto cells are small base stations with the lowest power levels, which are typically used indoors.
( 3 ) Equivalent Isotropic Radiated Power.
( 4 ) A recommended value for such limited power level is 4 dBm/5 MHz EIRP per cell applied to the upper- or lowermost 5 MHz of an operator's assigned spectrum block.
( *1 ) An exception for this baseline can be negotiated between adjacent operators for femto base stations in the case when there is no risk for interference to macro base stations. In that case – 25 dBm/5MHz EIRP per cell may be used.
( *2 ) Administrations may choose to have a guard band below 3 400 MHz. In that case the power limit may apply below the guard band only.
( *3 ) Administrations may select the limit from case A or B depending on the level of protection required for the radar in the region in question.
( *4 ) Note in particular that different baseline levels are defined for different parts of the spectrum and that the power limit of the lower transitional region is used in a part of the guard band 3 490–3 510 MHz. Spectrum below 3 400 MHz has not been included in the Figure, although the BEM element “additional baseline” may be applied to protect military radiolocation.
( *5 ) This power limit is specified as EIRP for terminal stations designed to be fixed or installed and as total radiated power (TRP) for terminal stations designed to be mobile or nomadic. EIRP and TRP are equivalent for isotropic antennas. It is recognised that this value may be subject to a tolerance (of up to 2 dB) defined in the harmonised standards to take account of operation under extreme environmental conditions and production spread.
