Cisco CISCO1005-CH Deployment Guide - Page 31

Deployment Example Basic Guidelines Process Determining How Many Access Points are Needed In this section you define the coverage area for each floor in the building and divide it into rectangles and calculate how many access points are needed by dividing the area of each rectangle by the Z factor squared. The example shown below is for a typical office building with a desired average user throughput of 5 Mbps. Figure 5 Determining the Number of access points 150 ft. (Area 1) 150 ft. APs (Area 1) = (150/77) x (150/77) = 4 APs APs (Area 2) = (450/77) x (150/77) = 12 APs Total = 16 APs (Area 2) 150 ft. 135686 450 ft. Optional Minimal Site Survey If the building type estimate needs to be verified, a quick minimal site survey can be done to verify the signal strength of the access point for the coverage radius. For example, for a typical office building with a desired average user performance of 12 Mbps a signal strength of -75 dBm or better is needed and the site survey will be used to verify that the -75 dBm coverage radius of a Cisco 1000 Series lightweight access point is 50 feet. Review the "Optional Minimal Site Survey" section of this document for how to perform a site survey using a Cisco 1000 Series lightweight access point. 78-17279-01 Deployment Guide: Cisco Aironet 1000 Series Lightweight Access Points 13