Wireless technology

A local area network (LAN) without cables is called a wireless LAN (WLAN).

What is wireless LAN?

WLANs are data networks that allow computer systems to connect together through a wireless radio connection so that they can share data and access external networks, such as the internet, within a set range.

How to set up a wireless local area network?

You need two main components to set up a WLAN:

• an access point to link devices to the network
• adapters for each device, such as PC, laptop or tablets

Wi-Fi is the common name for WLANs, based on IEEE 802.11 standards. These ensure devices work together reliably. Read more about WLAN standards.

Advantages of wireless LAN

WLANs can broadly do anything that a 'wired' LAN can do, without the messy cables between the user device and the network. A wireless set-up can:

• let staff share files and hardware easily
• keep devices online even if users move around the space
• support greater flexibility in an office, eg through 'hot desking'

WLANs can extend network access to areas where cabling might not be cost-effective or practical. For example, from an office to its adjacent warehouse or storeroom, or across retail outlets, hotels, or public spaces such as health centres and job centres.

WLANs can particularly benefit businesses that:

• have staff working away from the office (eg sales staff)
• rely on flexible working styles, such as home working or 'hot desking'
• are located in premises where wiring is impractical or cost prohibiting (eg listed buildings)

What are WLAN 'hotspots'?

WLAN 'hotspots' are wireless-enabled areas offering customers access to a broadband internet connection, often for a fee. Such services are common in public areas such as airports, stations, cafes and hotels. They keep travellers linked to their business networks.

It is important to make sure that you use a secure wireless network with strong encryption, or use a VPN over any unencrypted wireless network.