Differences between WLAN and Wi-Fi: Exploring the Key Distinctions - Wifi and Wlan: Uncovering the Distinctions
Wi-Fi and WLAN (Wireless Local Area Network) may seem like interchangeable terms, but they have distinct differences.
WLAN is a broad term that encompasses any wireless local area network that connects devices within a limited area using wireless communication technologies. WLAN follows the IEEE 802.11 family of standards, which define the protocols for wireless networking in local regions. Typically, WLAN operates within the 2.4 GHz and 5 GHz frequency bands, forming a star topology network where all data is transmitted via an access point [1].
On the other hand, Wi-Fi is a brand name and a set of technology standards based on IEEE 802.11. Wi-Fi standards are developed by the IEEE 802.11 Working Group and ratified by the Wi-Fi Alliance, ensuring interoperability between certified devices. In essence, Wi-Fi is a type of WLAN that specifically adheres to IEEE 802.11 standards and is interoperable via certification [2].
Development History and Versions:
The concept of WLAN originated in the 1990s when wireless connectivity started to replace wired LANs. Early WLANs were expensive and limited in speed (1-10 Mbps), often deployed where wiring was impractical [1].
The IEEE 802.11 standard was released in 1997, introducing the foundation for WLAN communication protocols. Various amendments and versions have followed, including:
- 802.11a (1999): Operates at 5 GHz band with up to 54 Mbps speed.
- 802.11b (1999): Operates at 2.4 GHz band with speeds up to 11 Mbps.
- 802.11g (2003): Combined 2.4 GHz band with up to 54 Mbps.
- 802.11n (2009): Introduced MIMO technology, higher throughput up to 600 Mbps, and operation in both 2.4 and 5 GHz.
- 802.11ac (2013): Operates mainly at 5 GHz with multi-station MIMO and speeds over 1 Gbps.
- 802.11ax (Wi-Fi 6) (2019): Improves efficiency (OFDMA and MU-MIMO), supports many devices simultaneously, and offers speeds up to 9.6 Gbps [2][3].
Summary:
| Aspect | WLAN | Wi-Fi | |-----------------------|----------------------------------|------------------------------------| | Definition | Any wireless local area network | Wireless LAN based specifically on IEEE 802.11 standards, certified by Wi-Fi Alliance | | Standards | IEEE 802.11 family | IEEE 802.11 family with Wi-Fi branding and certification | | Development | Started early 1990s, costly initially, general term | Developed from IEEE 802.11 since 1997, Wi-Fi Alliance ensures interoperability and branding | | Frequency Bands | Typically 2.4 GHz and 5 GHz | Same as WLAN (2.4 GHz, 5 GHz, and others depending on version) | | Versions/Amendments | Broad term covering many protocols | Includes versions like 802.11a/b/g/n/ac/ax (Wi-Fi 6) focusing on performance and device density | | Typical Usage | Generic wireless networking in LAN environments | Certified interoperable WLANs for home, office, public hotspots |
In short, Wi-Fi is a standardized and branded form of WLAN technology based on the evolving IEEE 802.11 standards. WLAN is the general category of wireless local networks, while Wi-Fi refers specifically to IEEE 802.11-based WLANs designed to ensure device compatibility and performance [1][2].
In light of this, one could say that the Commission, while considering a proposal for a directive on the protection of workers from the risks related to ionizing radiation, might also consider adopting IoT technology to track and monitor workers' exposure levels, thus integrating it with their lifestyle and home-and-garden routines. On the other hand, data-and-cloud-computing industries could greatly benefit from advancements in WLAN and Wi-Fi technologies, as they enable seamless and high-speed wireless connections, enhancing productivity and efficiency in the workplace.
