Siemens IEEE802.11 Instrukcje Operacyjne Strona 20

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Description
2.4 IEEE 802.11n
SCALANCE W770/W730 to IEEE 802.11n Web Based Management
20 Configuration Manual, 11/2014, C79000-G8976-C323-03
Features of the SCALANCE W700
Type
Number of
WLAN
ports
Antennas
Number and
type of Ethernet
interface
Degree of
protection
Order no.
SCALANCE W774-1 RJ-45 1 external 2 x 10/100 Mbps
Ethernet (cop-
per)
IP30 6GK5774-1FC00-0AA0
6GK5774-1FC00-0AB0
(1)
SCALANCE W734-1 RJ-45 1 external 2 x 10/100 Mbps
Ethernet (cop-
per)
IP30 6GK5734-1FC00-0AA0
6GK5734-1FC00-0AB0
(1)
(1) US variant
2.4
IEEE 802.11n
Overview
The standard IEEE 802.11n is an expansion of the 802.11 standard and was approved in
2009.
Previous standards worked either in the 2.4 GHz frequency band (IEEE 802.11g /b) or in the
5 GHz frequency band (IEEE 802.11a). IEEE 802.11n can operate in both frequency band.
In the IEEE 802.11n standard, there are mechanisms implemented in PHY and MAC layers
that increase the data throughput and improve the wireless coverage.
MIMO antenna technology
Maximum ratio combining (MRC)
Spatial multiplexing
Channel bonding
Frame aggregation
Accelerated guard interval
Modulation and coding scheme
Data throughput rates up to 450 Mbps (gross)
This is not possible on all devices.
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