However, there is the advantage of a higher speed of 54 Mbps and the elimination of the risk of interfering with other household appliances, the latter using the regulated frequency of 2.4GHz.ĭevices with 802.11a and 802.11b are not compatible with each other. This frequency is 5GHz decreases the coverage of the signal, intampinand difficulties in penetrating walls and other objects. Higher costs of 802.11a made it less popular than 802.11b, being more intended for the evils of the big companies.Ĩ02.11a supports speeds in bandwidth up to 54 Mbps, in a frequency spectrum regulated, approximately 5GHz. Even though many have the impression that 802.11a has appeared after 802.11b, in fact, this standard has been released before. It is the second standard based on the original 802.11, being launched during 802.11b development. Therefore, 802.11b is a standard characterized by: low production cost, good signal, but also through low operating speed and the risk of interfere with household appliances and other devices using the 2.4 GHz band. However, if 802.11b is positioned at a reasonable distance from other devices, the risk of interference may be easily avoided. Despite the fact that using frequency unregulated by 2.4 GHz, they could appear interference with household apartments, gen: microwave oven or wireless phones. It was a technology well received by device manufacturers because of low costs. Close to the speed at that time (1999) of Ethernet (cable). An extended version of 802.11, capable of operating at speeds up to 11 Mbps. In July 1999, IEEE launched the 802.11b standard.
It is simple to understand, why you will not find on the market equipment that has this standard. This standard supports a bandwidth of maximum 2 Mbps on frequency 2.4 GHz. They called him " 802.11", After the name of the group of developers who worked on its creation. The first standard Wifi was created in 1997 by IEEE (Institute of Electrical and Electronics Engineers). Before you give it money on a Wi-Fi router, it is very important to understand what these standards are and how they can help you. When you decide to buy a router for home or in the office, find Wi-Fi compliant devices on the market 802.11b / g / n si 802.11ac. Standard IEEE ( Institute of Electrical and Electronics Engineers) 802.11 was added to the Wi-Fi Alliance, a non-profit organization that owns the trademark " Wi-Fi", And certifies the devices that support this technology. In most cases, it's about a routercapable of transmitting data through an IP protocol to one or more Wi-Fi-compatible devices.
Game consoles, mobile phones, tablets, smart TVs, printers, alarm systems and many other devices are able to support this type of connection.ĭata packet traffic to a Wi-Fi network is supported by a hardware device that implements the telecom standard IEEE 802.11. " Wi-Fi"Or" WiFi”Is a technology for local wireless networks ( Wifi - wireless local area network), created between devices that supports IP connections (Internet Protocol) at speeds equivalent to cable.
Although there is a "connection" between it and the TV when we press it, it is done by infrared (IR). The classic TV remote control, DO NOT use a wireless signal. Both the transmitting and the receiving device will be provided with an antenna for capturing and transmitting signals. The same goes for mobile phones (non-smartphones), which send and receive signals from an antenna of the mobile operator.
For example, simple transceivers use a wireless connection between them. In fact, "wireless" refers to anything type of radio frequency connection, which is realized between two or more terminals, without there being one physical conductor. " wireless"And" Wi-Fi”Are taken by many as two synonymous words.