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Wifi Standart ? What is that ?

Wi-Fi standards, as defined by the IEEE (Institute of Electrical and Electronics Engineers), specify the technologies and protocols that govern wireless local area network (LAN) communication. These standards determine how devices communicate over Wi-Fi networks, including factors like data transfer rates, frequency bands, and security features. Here’s an overview of some of the key Wi-Fi standards:

  1. 802.11b: This was one of the earliest Wi-Fi standards, introduced in 1999. It operates in the 2.4 GHz frequency band and provides data rates of up to 11 Mbps. While it’s relatively slow by today’s standards, it played a crucial role in popularizing Wi-Fi.
  2. 802.11a: Also introduced in 1999, this standard operates in the 5 GHz frequency band and provides data rates of up to 54 Mbps. It offered faster speeds compared to 802.11b but had shorter range due to the higher frequency.
  3. 802.11g: Introduced in 2003, 802.11g combined the speed of 802.11a (54 Mbps) with the 2.4 GHz frequency band used by 802.11b. This made it compatible with older 802.11b devices while offering higher data rates. It was widely adopted in its time.
  4. 802.11n: Introduced in 2009, this standard significantly improved Wi-Fi performance. It operates in both the 2.4 GHz and 5 GHz bands, offering data rates of up to 600 Mbps. It introduced multiple-input, multiple-output (MIMO) technology for better range and speed.
  5. 802.11ac: Introduced in 2013, 802.11ac is often referred to as Wi-Fi 5. It operates in the 5 GHz band and offers data rates of up to 3.5 Gbps. It further improved MIMO technology and introduced features like beamforming for better signal coverage.
  6. 802.11ax: Also known as Wi-Fi 6, this standard was introduced in 2019. It operates in both the 2.4 GHz and 5 GHz bands and offers data rates of up to 10 Gbps. Wi-Fi 6 introduced technologies like Orthogonal Frequency Division Multiple Access (OFDMA) and Target Wake Time (TWT) to improve efficiency and reduce congestion in crowded networks.
  7. 802.11ay: This is an emerging standard, sometimes referred to as Wi-Fi 6E. It operates in the 6 GHz frequency band and is designed to provide even higher data rates and lower latency for applications like augmented reality and virtual reality.
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These standards are backward compatible to varying degrees, which means newer Wi-Fi devices can usually connect to older networks, but the network’s performance may be limited by the capabilities of the least capable device.

It’s important to note that Wi-Fi standards continue to evolve, with new generations and amendments being developed to meet the increasing demands for speed, capacity, and reliability in wireless networks. Upgrading to a newer Wi-Fi standard can improve your network’s performance if your devices support it and if you have the appropriate router or access point.

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