Learn about the definition, functioning and technical parameters of a WiFi wireless network. We invite you to read on.

What is WiFi?

WiFi (an abbreviation of Wireless Fidelity) is a technology that enables data transfer via radio waves. It is used to connect devices to a local network and the internet over short and medium distances. It usually covers a range of several to several dozen metres (e.g. within a single building). It has a greater range than Bluetooth, but significantly less than mobile networks.

It operates on specific frequencies (so-called bands). Most often these are 2.4 GHz, 5 and 6 GHz, which are available to users without the need for a licence.

Components of a wireless network

A WiFi router acts as a central hub. It connects all ‘client’ devices (laptops, smartphones, tablets) and provides them with Internet access. It consists of a processor, RAM and built-in antennas (external or internal) that are responsible for signal transmission. Modern routers allow you to configure WiFi channels, control access, set up a firewall, and even generate a separate network, e.g. for company guests.

Frequencies, bands and channels – what is worth knowing?

WiFi can operate on three main frequencies:

• 2.4 GHz band (13 channels) – has greater range and passes through obstacles better.
• 5 GHz band (25 channels) – offers higher bandwidth and significantly less interference.
• 6 GHz band (59 channels) – provides higher bandwidth, better energy efficiency, support for more devices simultaneously, and reduced latency.

To clarify: channels are frequencies within a given band. If neighbouring WiFi networks use the same channels, interference and reduced bandwidth occur – the internet becomes slower and connection interruptions occur.

How does a wireless WiFi network work?

WiFi devices (router, laptop, tablet, smartphone) communicate with each other by sending and receiving radio waves.

Router – receives data from the internet (via cable) and then transmits it wirelessly to devices. The same happens in the ‘other direction’. That is, it simultaneously receives data from a phone or laptop and sends it on to the network. The transmission range is limited. The signal weakens with distance from the router and when passing through ‘obstacles’ (in the form of walls, ceilings, furniture, other devices, etc.).

Conclusions? For the best possible performance, it is worth placing it in a central location in the building, away from other devices and barriers that may interfere with the signal.

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We will take care of every stage – from the audit, through the design, to the implementation of a stable, efficient and secure wireless network. We will use our experience in designing and implementing WiFi networks. Interested? Then don’t wait and go to contact us now to talk to our expert advisors.