What Is WiFi?

What is WiFi and just how does WiFi work? Lots of people are using WiFi technology and plenty of them don't answer on these questions.

WiFi - wireless fidelity refers back to the wireless networks involving 802.11 standard manufactured by the IEEE. WiFi or Wi-Fi can be a trademark with the Wi-Fi Alliance. WiFi Alliance tests equipment of varied WiFi vendors and issues a certification. If wireless technique is WiFi certified it comes with an assurance it acts according to the 802.11 standards.

There can be widely used term for WiFi network this also is WLAN. WLAN - Wireless Local Area Network, or Wireless LAN is local network according to WiFi technology. So now if you so what now is WiFi, lets find out how WiFi works.

WLAN uses different IEEE standards for bandwith:

- 802.11a

- 802.11b

- 802.11g

- 802.11n

802.11a works on the frequency of 5 GHz. Most of the wireless signals make use of the 2.4GHz band, so there's much greater possibility for lowering the strength with the signal, because interference along with other signals that actually works for a passing fancy frequency. Speed utilised by this standard is 54Mbps and it's also almost 5 times greater then speed of 802.11b standard.

802.11b works on the frequency of 2.4 GHz with maximum speed of 11 Mbps. This frequency of 2.4 GHz is unregulated frequency along with the providers do not have to give the license for this. The range inside the indoor environment is all about 35 meters (117 feet), and 100 meters (333 feet) in outdoor environment.

802.11g works on the frequency of 2.4 GHz, with maximum speed of 54Mbps. Hardware is compatible with 802.11b hardware.

What is WiFi 802.11n? It is still not standard, it really is amendment. This can be a reason it runs using both frequency bands 2.4 GHz and 5 GHz. Most with the vendors use 2.4 GHz frequency. The equipment implementing 802.11n is backward compatible with old standards. This means that 2.4 GHz 802.11n is appropriate for 802.11b and 802.11g.

Speed is usually 150Mbps, however, many in the wireless routers perform even on 300 Mbps. The range is 6 times father comparing to 802.11g.

Since it is still not standardized, every one of these values of speed and range you ought to ignore. If you are buying new wireless equipment, it is good to look at the one which support n. But I wouldn't recommend changing 802.11g wireless router and cards that happen to be already working fine with all the newest n amendment. There could be a significant difference between actual results along with the speeds and ranges that vendors are mentioning.

What is WiFi equipment?

As I have stated previously here, WiFi uses the WLAN standard for any connection between the wireless access points or broadband wireless modems and wireless clients or computers with Wireless internet card.

WLAN uses nine WLAN network services for transfer of packets and management operations. WiFi technology uses WLAN formation and WLAN infrastructure.

Broadband wireless router can be a wireless access point containing routing functionalities and that has broadband connection. Broadband connection is provided by fiber optics, DSL, ethernet or cable modem. Every wireless broadband router is really a Wireless access point (connects wireless devices like computers and PDA-s with a wired network) with broadband access plus a router (a tool that forward packets between computer networks) simultaneously.

What is often a WiFi card? It connects devices for the wireless LAN network or WiFi network. On web you could discover the other names WiFi card and wireless network card. Wireless network cards supports several 802.11a, 802.11b, 802.11g or 802.11n WiFi standards.