Wireless Access

Occasional Contributor II

concurrent user and data rate per user calculation

Hi masters,


customer asked me the calculation.

How many concurrent users under below situaiton?

- 2.4GHz only

- 1 x AP only

- 4x4:4

- 20MHz or 40MHz channel width

- 1G internet bandwidth

- assume each user consumes 5Mbps





Re: concurrent user and data rate per user calculation

With 2.4GHz only, there are lots of external factors that will complicate this calculation. I suggest that the 1Gbps internet link is not the limiting factor here (with a single AP). 40MHz channel width is not recommended in 2.4GHz. A single AP will have a max data rate of about 217Mbps, so expect about half that for useable throughput. Other wireless networks operating around your channel (2.4GHz channels are not non-overlapping) will also impact your max throughput, as will non-wifi sources of interference.

Charlie Clemmer
Aruba Customer Engineering
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