manual

Network Connectivity
Wireless LAN
Management
Services
21
Wireless distribution systems
WLAN in sport arenas
Sport arenas that host large sporting events are increasingly modern and must provide state-of-the-art
information transmission. Very often, however, the kind of high-power Internet access that enables real-time
reporting by journalists is not available throughout the stadium. In many cases, structural alterations and cable
installation are unrealistic and/or uneconomical. More and more frequently users need to be mobile. This is why
outdoor WLAN solutions are an ideal way of enabling journalists and photographers to access the Internet. It is
possible to offer Internet access via wireless LAN to the spectators. A wireless distribution system allows radio
cells to be connected to each other without the need for cabling. This means that large areas can go online
without a complex installation. This infrastructure can also be made available to caterers, fast-food outlets,
and ticket desks. An online connection to ERP and online ordering systems simplifies administration and speeds
up transactions. Replenishment orders can be made directly on site, which guarantees that there are adequate
supplies for guest hospitality.
Wireless distribution solutions for sport arenas
Internet
Photographers
who wish to send their
pictures immediately to
the editorial office are
served by the sector
antennas of the opposite
VIP area.
The press stand
and press rooms
have cabled Internet
access. The VIP area
opposite and the
stadium restaurant
are connected to the
Internet via WLAN.
The LANCOM OAP-382 connects the
stadium restaurant to the Internet via WLAN.
Photographers on the sideline are provided
with WLAN access via sector antennas.
VIP lounge and VIP
arena
are connected to the
Internet via the press
stand using LANCOM
OAP-382. Spectators
and photographers can
use WLAN via sector
antennas.
LANCOM
OAP-382
LANCOM
OAP-382
LANCOM
OAP-321
Press gallery
5-GHz band:
2.4-GHz band:
VIP lounge
Restaurant
Outdoor WLAN in wind farms and offshore facilities
With the current interest in alternative energy sources, increasing numbers of wind turbines are being
erected and wind farms are being extended. However, these wind turbines are exposed to considerable stresses
and therefore require continuous monitoring to avoid defects, expensive maintenance work, and to minimize
downtime. This applies especially to offshore facilities that can be difficult to reach at some times of the
year due to the forces of nature. Continuous monitoring of performance data allows emergent faults to be
recognized early on and more serious damage to be avoided. Administration over wireless LAN means that
service intervals can be synchronized and closely coordinated.
Real-time status monitoring of wind generators
In many cases it can be advantageous to equip the wind turbines with WLAN and to control the equipment
wirelessly from the wind farm's control center. This is accomplished with robust outdoor access points installed
on the wind turbines. Data from the wind turbines is captured locally in real time and relayed to the wind farm
control center over a mobile phone-based VPN connection. This minimizes the need to have staff on site. The
diagram below shows an example of a possible layout for a comprehensive networked solution:
Wireless LAN for wind farm management
Wind turbine with
LANCOM OAP-321
Wireless can be
controlled and man-
aged centrally from
the substation.
Wind turbine with LANCOM
OAP-382 receives data from the
substation and acts as a bridge
to the other wind turbines over
an external omni-directional an-
tenna, e.g. AirLancer Extender
O-360ag.
The local substation
equipped with a LANCOM
OAP-321-3G and a O-D60a
takes WLAN connectivity to
the wind turbines. UMTS/
VPN provides the connection
to the power company in the
city.
Substation
LANCOM
OAP-382
LANCOM
OAP-321
LANCOM
OAP-321 Wireless
LANCOM OAP-321-3G
UMTS/VPN
5-GHz band:
2.4-GHz band:
Stationary links
with wireless LAN
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