In this article, we will discuss the in-depth Knowledge about Technology 802.11. Wi-Fi technology was invented by John O’Sullivan or John Deane. The development of Wi-Fi started in 1985 and it was completely ready in 1991. This technology 802.11 was established to further improve the convenience of communication. There are two types of technology: 1st BSS (basic service set) and 2nd ESS extended service set.
We can use this technology in many ways, including LAN (local area network 1-10 km), MAN metropolitan area network 1-100 km), and WAN (wide area network). In this technique, we will learn about Wi-Fi and the names of its different ranges and their work such as 802.11a, 802.11b, 802.11ax, 802.11g, 802.11ac, 802.11n.
Knowledge about Technology 802.11 : Standard of 802.11
802.11a
802.11a is a set of standards for implementing wireless local area networking (WLAN) communication. It is one of the earlier versions of the IEEE 802.11 wireless networking standards. The 802.11a standard operates in the 5 GHz frequency band and supports data transfer rates up to 54 MBps.
802.11b
802.11b is an older Wi-Fi standard that operates on the 2.4 GHz frequency. It was one of the first widely adopted Wi-Fi standards and offered a maximum data rate of 11 MBps. While it may not be as fast as the newer standards, it can still be useful for certain devices or in areas with less network congestion.
802.11ax
802.11ax, also known as Wi-Fi 6! It’s the latest Wi-Fi standard that brings even more improvements to wireless networks. With Wi-Fi 6, you can experience faster speeds, increased capacity, and better performance in crowded areas. Designed to handle the growing number of devices connected to our networks and provide a more reliable and efficient connection
802.11g
802.11g is another Wi-Fi standard that operates on the 2.4 GHz frequency. It’s an improvement over 802.11b and offers a faster maximum data rate of up to 54 MBps. it has been largely replaced by newer and faster Wi-Fi standards like 802.11n and 802.11ac
802.11ac
802.11ac is the latest and greatest Wi-Fi standard. It operates on both the 2.4 GHz and 5 GHz frequencies, just like 802.11n, but it offers even faster speeds and better performance. With 802.11ac, It’s perfect for streaming high-definition videos, online gaming, and connecting multiple devices without any lag. It’s like giving your Wi-Fi a turbo boost.
802.11n
802.11n is a Wi-Fi standard that brought some major improvements to wireless networks. It operates on both the 2.4 GHz and 5 GHz frequencies, providing faster speeds and better range compared to older standards. With 802.11n, you can get maximum data rates of up to 600 MBps.. It’s great for streaming, online gaming, and connecting multiple devices to your network. It’s a step up from the older Wi-Fi standards.
802.11ad
IEEE 802.11ad is a modification that defines a new physical layer of 802.11 networks to operate in the 60 GHz millimeter wave spectrum. This frequency band has remarkably different propagation prop operations. IEEE 802.11ad is a protocol used for very high data rates(about 8 Gbit/s) and for short-range communication (about 1-10 meters). TP-Link announced the world’s first 802.11ad router in January 2016 than the 2.4 GHz and 5 GHz bands where Wi-Fi networks
Knowledge about Technology 802.11 : Modulation Techniques
Modulation is a technique used in communication systems to translate information onto a carrier signal for transference. It allows the transfer of data over communication channels by varying certain properties of the carrier signal.
Wi-Fi : Orthogonal Frequency Division Multiplexing (OFDM)
OFDM is a modulation technique used in digital communication systems, particularly in wireless communication and broadband technologies. OFDM is known for its ability to alleviate the effects of multipath interference and frequency selective fading, making it suitable for high data rate transmission over a wireless channel.
Multiple Input Multiple Output (MIMO)
MIMO refers to a communication or control system with multiple input and multiple output channels. This concept is commonly used in various fields, including telecommunication, control systems, and signal processing.
Knowledge about Technology 802.11 : Security Protocol
- Wireless networks using the 802.11 standards implement security protocols like WAP (Wired Equivalent Privacy ), WPA (Wi-Fi Protected Access ), and WPA2/ WPA3 to secure communication.
- WPA3, introduced with 802.11ax, enhances security features further, providing stronger encryption and protection against various attacks.
Knowledge about Technology 802.11 : Conclusion
Wi-Fi is very useful for establishing an internet connection between multiple devices. Therefore, these have become popular over time because they are cost-effective and offer very high data transfer rates. Along with these advantages, they allow internet connectivity without using cables.
