Hewlett Packard Enterprise Company AP175 用户手册
Aruba AP-175 Outdoor Access Point
| Installation Guide
5
Outdoor Planning and Deployment Considerations
Prior to deploying an outdoor wireless network, the environment must be evaluated to plan for a successful
Aruba WLAN deployment. Successfully evaluating the environment enables the proper selection of Aruba
APs and antennas and assists in the determination of their placement for optimal RF coverage. This process
is considered WLAN or RF planning and Aruba’s system engineers can assist in the outdoor planning
process.
Aruba WLAN deployment. Successfully evaluating the environment enables the proper selection of Aruba
APs and antennas and assists in the determination of their placement for optimal RF coverage. This process
is considered WLAN or RF planning and Aruba’s system engineers can assist in the outdoor planning
process.
Scale Requirements
The potentially immense scale of outdoor deployments requires consideration of factors that may not be as
important in a typical indoor deployment:
important in a typical indoor deployment:
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Range (distance): Range or distance between APs must be taken into account during the planning phase.
Available AP mounting locations are often far less flexible in an outdoor environment. Regardless of
these outdoor restrictions, the desired goal is to achieve results similar to an indoor deployment: a
“dense” RF deployment that supports advanced Aruba features, such as ARM, efficient client roaming,
and failover.
Available AP mounting locations are often far less flexible in an outdoor environment. Regardless of
these outdoor restrictions, the desired goal is to achieve results similar to an indoor deployment: a
“dense” RF deployment that supports advanced Aruba features, such as ARM, efficient client roaming,
and failover.
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Elevation: Proper consideration and planning for elevation differences between APs (AP to AP) and AP
to Client can be critical to success. To plan for these differences in elevation, it is important to
understand the 3D coverage pattern provided by the antennas that will be deployed in the environment.
to Client can be critical to success. To plan for these differences in elevation, it is important to
understand the 3D coverage pattern provided by the antennas that will be deployed in the environment.
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Non-Fixed Considerations: The RF environment might change on a day to day basis. Keep non-fixed
items, such as shipping containers, vehicles, and future building construction, in mind when planning for
an outdoor deployment.
items, such as shipping containers, vehicles, and future building construction, in mind when planning for
an outdoor deployment.
Identifying Known RF Absorbers/Reflectors/Interferences Sources
Identifying known RF absorbers/reflectors/interference sources while out in the field during the installation
phase is critical. Even though outdoor environments consist of fewer RF absorbers/reflectors/interference
sources compared to indoor environments, ensure that these sources are identified and taken into
consideration when installing and mounting an AP to its fixed outdoor location.
phase is critical. Even though outdoor environments consist of fewer RF absorbers/reflectors/interference
sources compared to indoor environments, ensure that these sources are identified and taken into
consideration when installing and mounting an AP to its fixed outdoor location.
RF Absorbers
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Cement/Concrete
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Natural Items: Trees/vegetation
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Brick
RF Reflectors
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Metal Objects: Roof-installed air-conditioning equipment, chain link fences (depending on aperture
size), other wire fences, or water pipes
size), other wire fences, or water pipes
RF Interference Sources
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Other 802.11a/b/g/n or broadband access equipment operating nearby
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Industrial RF welding equipment or other Industrial, Scientific and Medical (ISM) equipment that utilizes
RF to heat or alter the physical properties of materials
RF to heat or alter the physical properties of materials
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Military, Commercial Aviation or Weather Radar Systems
Line of Sight (Radio Path Planning)
A wireless bridge or mesh link requires a “radio line of sight” between the two antennas for optimum
performance. The concept of radio line of sight involves the area along a link through which the bulk of the
performance. The concept of radio line of sight involves the area along a link through which the bulk of the
AP-175-IG-Rev01.fm Page 5 Friday, September 17, 2010 4:27 PM