Koelnmesse stages approximately 75 international trade fairs and 2,000 conferences with around 340,000 visitors, making it Germany's largest organiser of trade fairs on its own site.
It is also the number one trade fair location for more than 25 commercial sectors.
- Fifth-largest exhibition centre in the world
- 11 trade fair halls with an area of 284,000 m²
- 100,000m² of outdoor area and 13,000 parking spaces
In July 2005, almost nine years ago, SPINNER was chosen to deliver and install nine MNCS combiners for the exhibition halls of the Koelnmesse. The MNCS combiner cabinets are installed inside of "Radio-containers" on the roof-tops of the different exhibition-halls.
The MNCS combiner design was defined according to the demands of the German mobile communication network operators at that time:
- Four network operators with UMTS2.1 systems (two port per NodeB; 10 MHz-carriers/NodeB)
- Two network operator GSM1800 systems
- Two network operator GSM900 systems
These MNCS combiners did an excellent job over the years without any problems. But 'time flies' and nowadays, not only crowded areas like big fairgrounds need more bandwidth and transmission capacity to satisfy the growing subscriber demand for endless telephony and high speed internet access.
Upgrades, extensions and 'sectorisation' of mobile communication building coverage are the logical consequence of this development.
The German mobile communication operator again chose SPINNER's MNCS combiner technology to improve the network quality of all four German operators for the Koelnmesse.
The upgrades and extensions of the combiner system were massive.
The frequency range covered by our system was extended for the lower LTE800 and the higher LTE2600 frequency range. The number of connected BTS/NodeB's was quadruplicated and the total input power to our combiner rise from about 480 W to 3 KW.
Sufficient signal isolation and consequent depression of unwanted signal intermodulation were the challenges for SPINNER's approved filter combiner technology.