Switzerland and the Principality of Liechtenstein
Radio Interface Regulation

784.101.21 / RIR03021)
Point-to-Point

RIR0302-24
Point-to-Point
27.9405 - 29.4525 GHz
28, 56 MHz / CCDP / ACCP
Edition 6.0 / 01.08.2018

Nr Parameter2)DescriptionComments
1Radiocommunication serviceFixed-
2ApplicationPoint-to-PointCCDP (Co-Channel Dual Polarization)
ACCP (Adjacent Channel Co-Polarization)
3Frequency bandA: 27.9405 - 28.4445 GHz
B: 28.9485 - 29.4525 GHz
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4Channelling28.0 MHz / 56.0 MHzChannel centre frequencies according to REC T/R 13-02, Annex C.
5Modulation / Occupied bandwidthClass: min. 4L. (16-QAM or equivalent).
ACM is allowed.
OBW: 28.0 / 56.0 MHz.
Definition of spectral efficiency classes: refer to EN 302 217-2, clause 4.1.1.3.
Adaptive Coded Modulation (ACM) is allowed.
OBW with Class 4L (16-QAM or equivalent): 28.0 MHz / 56.0 MHz with or without ACM.
6Direction / Separation1008 MHzFDD
7Transmit power / Power densityMax. 40 dBW e.i.r.p.The operational e.i.r.p. will be specified in the license / individual assignment.
8Channel access and occupation rules--
9Authorisation regimeSwitzerland: License required.
Liechtenstein: Individual assignment required.
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10Additional essential requirements--
11Frequency planning assumptionsEN 302 217-2.
Nominal RX input level = - 40 dBm.
ATPC control range = min. 10 dB to max. 20 dB.
Conditions for the nominal RX input level:
- Receiver input, point A in the system block diagram (EN 302 217-1),
- RX input level tolerance: +1 to -10 dB,
- ATPC set to min. TX output power in clear sky conditions (i.e. without rain fading).
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ATPC power increases shall be triggered on the basis of propagation effects only. The ATPC system shall not remain at max. available power (EN 302 217-1, clause 3.1) for more than 15 consecutive minutes (ITU-R Rec. F.750).
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Remote Transmit Power Control (RTPC) is considered to be an optional feature.
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At first CCDP has to be used and then ACCP.
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Limits of transmitter power spectral density: Refer to EN 302 217-2, clause 4.2.3.2, Figure 7.
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Allowed Reference Modes for ACM:
- 28.0 MHz channelling with 16-QAM modulation,
- 56.0 MHz channelling with 16-QAM modulation.
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Min. link distance = 2 km outside polygon ''Alpensüdseite''.
Min. link distance = 1.5 km inside the poly-gon ''Alpensüdseite''.
Polygon ''Alpensüdseite'' coordinates CH-1903: 721311/72434; 638386/114490; 680819/156635; 716723/158677; 782207/137380.
Site sharing radius = 200 m.
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Class 3 antenna.
Min. antenna gain = 36 dBi.
Linear (horizontal or vertical) polarization.
Antenna radiation pattern envelope (RPE) according to EN 302 217-4, Figure 25.
OFCOM may impose tighter requirements than the minimum values given in EN 302 217-4 in order to maximize the use of the scarce spectrum resources (Class 4 antenna).
12Planned changes--
13ReferenceEN 302 217-2 / ECC/DEC/(05)01 / REC T/R 13-02.Effective use of spectrum / ECC Decisions / ECC Recommendations.
14Notification numberG/TBT/N/CHE/170
2013/9504/CH
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15RemarksEN 301 489-4-

Normative part: 1 to 11
Informative part: Nr 12 to 15

1) RIR for similar and/or other applications are available under: https://www.bakom.admin.ch/bakom/en/home/frequenzen-antennen/nationaler-frequenzzuweisungsplan/schnittstellen-anforderungen.html
2) For explanations and legal status, please refer to basis document 784.101.21 / RIR0000