Fix your WiFi network!

Sluggish WiFi performance? Dropped WLAN connections? Full bars but no connection? What is it? Do you need professional help?

WiFi has become a necessity. In the modern office mobility is a requirement and cords are a nuisance. Unfortunately many WiFi networks don’t fill the bill. Either the network is underpowered or it has design flaws that hinder its use. Even if you do get connected, the data transfer is too slow or intermittent to be useful.

The basic steps in WiFi consultation are:

  • Requirements analysis: What is the network used for? How many users? What kinds of devices? How much data bandwidth? How large is the required coverage area?
  • Environmental analysis: How does the building construction affect radio coverage? What interference sources are there? What kind of networks are already in use nearby? Which bands and channels are optimal?
  • Access point placement: Where to place the access points for optimal performance? How to provide power to the access points?
  • Tuning: Channel planning, transmit power settings, SSIDs, VLANs
  • Security: WPA2 Personal or Enterprise according to the requirements analysis
  • Validation: Verifying that everything works as planned and meets the requirements

In Finland please ask for a quote: petri.riihikallio@metis.fi or call 0400 505 939

Petri Riihikallio is certified:

  • Certified Wireless Design Professional (CWDP)
  • Certified Wireless Security Professional (CWSP)
  • Certified Wireless Analysis Professional (CWAP)
  • Cisco Certified Network Associate Wireless (CCNA)
  • MikroTik Certified Network Administrator (MTCNA)
  • MikroTik Certified Wireless Engineer (MTCWE)
  • Ubiquiti Enterprise Wireless Administrator (UEWA-V2)
  • Ubiquiti Broadband Wireless Administrator (UBWA-V2)
  • Wireshark Certified Network Analyst (WCNA)

You can also study these subject yourself. Below are a few introductory articles.

Transmitter

8 reasons to turn down the transmit power of your Wi-Fi

By default almost all WiFi access points transmit at full power (100mW). This gives maximum coverage and users see a good signal (“full bars”). However, there are good reasons to turn down the transmit power to a fraction of the maximum.

Lock logo

How secure is your WiFi?

Do you have a shared password to the WiFi network? When was it last changed? Hasn’t anyone left the company since?

Radar

What are WiFi DFS frequencies and should I care?

The regulatory bodies are now strict about DFS requirements on WiFi access points. This applies to both new devices and updates to old ones. A simple firmware update may cause a lengthy delay before the network is operable.

WiFi 2.4 GHz

WiFi 2.4GHz band

The original Wi-Fi (also known as 802.11) used the 2.4GHz band. It is still the more popular band since virtually all devices support it. That makes it more crowded and it is also more prone to interference than the alternative 5GHz band.

WiFi 5GHz band and wide channels

On 5GHz WiFi there are more channels and less interference, both are important for fast wireless communications. The bandwidth can even be increased multifold by combining channels.

WiFi heat maps

It is fairly easy to create a heat map of a WiFi network that shows the signal level across the coverage area. What’s the use, what’s the benefit of surveying and is it worth paying for?