Moxa ANT-WSB-ANM-05 Manuel D’Utilisation

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Understanding Industrial WLAN – IEEE 802.11
2.4 Long Distance Wireless
Wireless transmissions today are based upon the IEEE 802.11 protocol stacks. By modifying these stacks, wireless 
solution providers can optimize them for long-range, point-to-point applications. It has also been used in the 
developing world to link communities separated by difficult geography with little or no connectivity options. In 
this section, we will introduce long distance wireless technology and list the components required to extend your 
wireless range.
 Application Topology
Wireless Link (AP-Client Mode)
By setting up a wireless link between the 
AP and Client, several buildings in an 
extensive corporate campus can be easily 
integrated into the company network. 
AP-Client connections can also be 
used to provide Internet access in areas 
where cabling would be too expensive or 
impractical to install. A good LOS (Line 
of Sight) is required between the AP 
and Client devices. Distances of several 
kilometers can be bridged by this type of 
wireless link.
Wireless Distribution System (WDS)
Wireless Distribution System (WDS) is a special type of wireless link. This mode allows several buildings 
on a company to be connected to the central office. The central AP is configured the partner MAC (Media 
Access Control) the remote WDS AP is configured the central AP MAC (Media Access Control). The wireless 
link will reduce half bandwidth (due to use the same frequency channel) when add more one AP under chain 
connection.
Ethernet
AP Client
Mobile Device
AP-Client Operation
Bridge Operation
AP Client
PLC
Panel PC
Access Point
AP Client
PLC
AP Client
Panel PC
AP-Client Operation