Whats WiFi and just how does WiFi work? Lots of people are using WiFi technology and lots of them do not answer on these questions.
WiFi – wireless fidelity refers back to the wireless networks which use 802.11 standard produced by the IEEE. WiFi or Wi-Fi is really a trademark of the Wi-Fi Alliance. WiFi Alliance tests equipment of various WiFi vendors and issues a certification. If wireless product is WiFi certified there is an assurance it acts according to the 802.11 standards.
Addititionally there is widely used name for WiFi network and this is WLAN. WLAN – Wireless Lan, or Wireless LAN is local network according to WiFi technology. So now when you ok now what is WiFi, lets learn how WiFi works.
WLAN uses different IEEE standards for data:
- 802.11a
- 802.11b
- 802.11g
- 802.11n
802.11a utilizes a frequency of 5 GHz. Most of the wireless signals make use of the 2.4GHz band, so theres much greater possibility for reducing the strength from the signal, because interference with other signals that works on a single frequency. Speed utilized by this standard is 54Mbps and it is almost Five times greater then speed of 802.11b standard.
802.11b utilizes a frequency of 2.4 GHz with maximum speed of 11 Mbps. This frequency of two.4 GHz is unregulated frequency and also the providers dont have to spend the money for license for this. The range in the indoor environment is 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.
Whats WiFi 802.11n? Its still not standard, its amendment. This can be a reason it operates on both frequency bands 2.4 GHz and 5 GHz. Most of the vendors use 2.4 GHz frequency. The equipment focusing on 802.11n is backward suitable for old standards. Which means that 2.4 GHz 802.11n works with 802.11b and 802.11g.
Speed is generally 150Mbps, however, many from the routers could work even on 300 Mbps. The number is 6 times father comparing to 802.11g.
Since it is still not standardized, all these values of speed and range you need to ignore. If you are buying new wireless equipment, its good to take the the one that support n. But I wouldnt recommend changing 802.11g wireless router and cards which are already working fine using the newest n amendment. There could be a significant distinction between actual results and also the speeds and ranges that vendors are mentioning.
Whats WiFi equipment?
As I have previously mentioned here, WiFi uses the WLAN standard for any connection between the wireless access points or broadband routers 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 is really a wireless entry way which has 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 entry way (connects wireless devices like computers and PDA-s to a wired network) with broadband access and a router (a tool that forward packets between computer networks) simultaneously.
What is a WiFi card? It connects devices to the wireless LAN network or the WiFi network. On web you could discover the choice names WiFi card and wireless network card. Wireless network cards supports a number of 802.11a, 802.11b, 802.11g or 802.11n WiFi standards.
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