80112

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802.11 is a set of specifications for wireless communication that was designed as an extension of the Ethernet local area network (LAN) protocol. It is the most widely used wireless LAN technology in the world and is commonly referred to as Wi-Fi. 802.11 technology enables users to connect to the Internet without having to use a physical LAN connection. This article will discuss the application field and working principle of 802.11.

802.11 technology is used in numerous applications, from providing Internet access to homes and businesses to allowing wireless communication between medical devices and between gadgets in cars. It is also used in industrial applications, such as the monitoring and control of production processes in factories, for example.

802.11 is most commonly used to provide wireless Internet access to users, either in their home or in public hotspots, such as airports or cafes. It works by using an access point (AP), which is typically connected to a wired Internet connection. The access point broadcasts a signal that can be picked up by Wi-Fi enabled devices within a certain radius. This allows users to connect to the Internet without having to use a physical LAN connection.

802.11 works by using a technique called Spread Spectrum Frequency Hopping (SSFH). The way it works is firstly the access point creates a radio signal which is modulated with data. An adapter in a device can detect this signal and interpret the data it contains. Once the data is detected, the device sends out an acknowledgement signal, which is picked up by the access point. This is then used to create a secure connection between the two so that data can be transmitted and received.

802.11 technology is also used in ad hoc networks. These are networks where devices can communicate directly with each other without having to use an access point. These networks are often used in scenarios such as temporarily setting up a network for a gaming party or for sharing files between two laptops.

802.11 is also used in mobile networks. This type of network is commonly referred to as a mobile mesh network. A mobile mesh network includes devices that can "hop" onto different access points as they move around, keeping them always connected to the Internet.

802.11 technology is an incredibly versatile and useful technology that is used in a wide variety of applications. It enables wireless communication between devices, allows users to connect to the Internet without needing a physical connection, and can be used to set up temporary or mobile networks. 802.11 is a versatile and powerful technology that is used in many different applications.

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