Defining Specifications for the WLAN Design

14 important questions on Defining Specifications for the WLAN Design

What is regulatory compliance?

Are restraints or restrictions imposed on an organisation by governing bodies and parent companies.

What is industry compliance?

Infrastructure should comply with standards to ensure product interoperability.

Give two examples of Industry Compliances?

  • WiFi Alliance
  • 802.11 IEEE standard
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What is the maximum latency and pack-loss for voice application?

150mS latyency, 1% packet-loss

Noise Floor is -90dBm, RSSI is -60dBm. Please calculate the SNR value?

30dBm

What does a low SNR value do with RF quality and throughput?

Bad RF quality and low throughput.

What factors need to be considered when designing coverage requirements?

  • Building materials
  • Square footage
  • Ceiling heights
  • Blueprints or floor plans
  • Facility access
  • Multi-floor structures
  • Wiring and power limitations

There are a few ways to achieve capacity requirements

  • Co-existing APs
  • Smaller coverage cells
  • Utilizing higher throughput protocols 802.11

What should you always do when designing for capacity requirements?

Performing spectrum analysis to find, remove or design around potential interferers.

Please mention two IEEE method for fast secure roaming?

  • IEEE802.11r
  • IEEE802.11k

What kind of issues can be detected with monitoring your WLAN?

  • Roque APs
  • Neighboring networks
  • New microwaves and cameras.

What kind of issues can Roque APs cause?

  • Bad RF environment.
  • CCI Co-Channel interference.
  • Unprotected portal into the corporate network.

What are the issues that neighboring devices can cause?

  • High noise floor
  • CCI
  • Employee devices may associate to neighboring WLAN network.

Please name a number of design constraints you can face during the design process?

  • Project budget
  • Physical locations of equipment
  • Building and safety codes.
  • Physical access.

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