SSH EN 302 217-3 V1.1.3:2005

Fixed Radio Systems; Characteristics and requirements for point-to-point equipment and antennas; Part 3: Harmonized EN covering essential requirements of Article 3.2 of R&TTE Directive for equipment operating in frequency bands where no frequency co-ordination is applied

Scope

The present document specifies the essential requirements for Digital Fixed Radio Systems (DFRS) operating in
frequency bands, which do not require co-ordinated frequency planning. It is intended to cover the provisions of
Directive 1999/5/EC [1] (R&TTE Directive) regarding article 3.2, which states that "… radio equipment shall be so
constructed that it effectively uses the spectrum allocated to terrestrial/space radio communications and orbital
resources so as to avoid harmful interference".
The present document with EN 302 217-2-2 (see bibliography) and EN 302 217-4-2 [8] will replace and supersede,
after a suitable transition period, the harmonized EN 301 751 (see bibliography) for all P-P equipment and antennas.
Those parts of this multipart EN introduces, for systems (equipment and antennas) already covered by EN 301 751 (see
bibliography), equal, technically equivalent or less stringent requirements. Therefore, from a strictly technical point of
view, it is expected that equipment already conforming to the previous EN 301 751 (see bibliography), would not need
a new test report for re-assessment of essential requirements according this new multipart EN; however, legal
implications with respect to the declaration of conformity and equipment labelling are not in the scope of the present
document.
In addition to the present document, other ENs that specify technical requirements in respect of essential requirements
under other parts of article 3 of the R&TTE Directive [1] will apply to equipment within the scope of the present
document.
NOTE: A list of such ENs is included on the web site http://www.newapproach.org.
In order to technically cover different market and network requirements, with an appropriate balance of performance to
cost and effective and appropriate use of the radio spectrum, the present document, together with EN 302 217-4-2 [8],
offers system types and antennas alternatives, for selection by administrations, operators and manufacturers dependent
on the desired use of the radio spectrum and network/market requirements, those options include:
• channel separation alternatives (as provided by the relevant CEPT Recommendation);
• implemented procedure for free radio channel selection;
• antenna directivity class alternatives (for different network density requirement).
The present document is mainly intended to cover fixed radio equipment without integral antennas. However, it also
applies to fixed radio systems products with integral antennas, for which all the technical requirements included in the
present document and in EN 302 217-4-2 [8] apply. For more background information on the equipment and antenna
parameters here identified as relevant to article 3.2 of R&TTE Directive see EG 201 399 (see bibliography) and
TR 101 506 (see bibliography).
For example, the frequency band 58 GHz is proposed to be used by various technologies for uncoordinated use of the
band. Besides the RF-channel selection procedure, specified in clause 4.2 to avoid unacceptable interference situations,
this band also benefits from the high and stable atmospheric attenuation which suppresses efficiently distant interferers
(about 10 to 15 dB/km at sea level, refer to ITU-R Recommendation P.676 (see bibliography).
For the purposes of the present document two equipment Classes are specified depending on the network requirements:
• Class A: Digital equipment for High Density Fixed Service (HDFS) applications typically connected to public
networks, which apply the RF-channel selection procedure (see clause 4.2), error performance and availability
requirements (see EN 302 217-1 [7]).
• Class B: Equipment without network requirements for quality of service, typically private connections.
Typical applications for Class A equipment are interconnection between cellular networks where, in some cases, there
is a need for short length connections (up to about 500 m). The RF channel selection procedure shall be used to protect
existing systems from a new system being commissioned. However, the channel selection procedure may not guarantee
interference free installation or operation in all cases, due to limitations in the procedure with respect to the variety of
systems.
Typical applications for Class B equipment are in private connections, such as video surveillance systems.