Руководство По Проектированию для Cisco Cisco Aironet 1522 Lightweight Outdoor Mesh Access Point

This section provides implementation details and configuration examples.

We recommend that you perform a radio site survey before installing the equipment. A site survey 
reveals problems such as interference, Fresnel zone, or logistics problems. A proper site survey involves 
temporarily setting up mesh links and taking measurements to determine whether your antenna 
calculations are accurate. Determine the correct location and antenna before drilling holes, routing 
cables, and mounting equipment.

When power is not readily available, we recommend you to use an unrestricted power supply (UPS) to 
temporarily power the mesh link.

Before attempting a site survey, determine the following:

How long is your wireless link?

Do you have a clear line of sight?

What is the minimum acceptable data rate within which the link runs?

Is this a point-to-point or point-to-multipoint link?

Do you have the correct antenna?

Can the access point installation area support the weight of the access point?

Do you have access to both of the mesh site locations?

Do you have the proper permits, if required?

Do you have a partner? Never attempt to survey or work alone on a roof or tower.

Have you configured the 1500 series before you go onsite? It is always easier to resolve 
configuration or device problems first.

Do you have the proper tools and equipment to complete your task?

Cellular phones or handheld two-way radios can be helpful to do surveys.

Deploying WLAN systems outdoors requires a different skill set to indoor wireless deployments. 
Considerations such as weather extremes, lightning, physical security, and local regulations need to be 
taken into account.

When determining the suitability of a successful mesh link, define how far the mesh link is expected to 
transmit and at what radio data rate. Remember that the data rate is not directly included in the wireless 
routing calculation, and we recommend that the same data rate is used throughout the same mesh (the 
recommended rate is 24 Mbps).