The present document specifies the minimum performance requirements for terrestrial fixed service
radiocommunications equipment operating in the 58 GHz frequency band which do not require co-ordinated frequency
planning.
The frequency band is proposed to be used by various technologies for uncoordinated use of the band. It also benefits
from the high and stable atmospheric attenuation which suppresses efficiently distant interferers (about 10 dB/km to
15 dB/km at sea level, refer to ITU-R Recommendation P.676 [17]).
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 4.1.3), error performance and
availability requirements (see clause 5.2).
- Class B: Equipment without requirements for quality of service, typically private network connections.
Typical applications for Class A equipment are e.g. interconnection between cellular networks where there, in some
cases, is a need for short length connections (up to about 500 meters). 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 networks, such as video surveillance systems.
This new version of this EN, introduces a different spectrum mask for systems designed for 50 MHz channel separation.
While considered more convenient from the point of view of easy and cost effective design, the new mask is considered
equivalent to the previous one from the point of view of spectrum efficient usage. Therefore, from th (...abbreviated)