Wi fi network


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Wi fi network

  2. 2.  1864: James Clerk Maxwell proved the existence of electromagnetic waves 1887 Heinrich Hertz sent and received wireless waves, using a spark transmitter 1920: Marconi discovers short wave radio, with wavelengths between 10 and 100 meters. The first wireless LAN was created in at the University of Hawaii in 1971.
  3. 3. What is Wi-Fi? Wi-Fi is stands for wireless fidelity. Requirement of Wi-Fi is mostly in Network Adapters, USB Adapters, internal and external antennas, all kinds of Access points. A Wireless Adapter translates data into a radio signal and transmits it using an antenna. A router receives the signal and decodes it. The router sends the information to the Internet using a physical wired Ethernet connection.
  4. 4.  Theterm Wi-Fi, first used commercially in August 1999, was coined by a brand- consulting firm called interbrand Corporation that the Alliance had hired to determine a name that was "a little catchier than IEEE 802.11b Direct Sequence"
  5. 5. SPEED OF WI-FI  wi-fi network use radio technology to transmit and receive the data at a high speed.  (1) 802.11  (2) 802.11a  (3) 802.11b  (4) 802.11g  (5) 802.11n
  6. 6. A and B is 10mbps and G is 54mbps And Upcoming N is 300mbps to get speed on your internet connection.
  7. 7. HOW TO WIFI NETWORK WORK?  The wi-fi of basic concept is same as walkie-talkies.  wi-fi hotspot is created by installing and access point to and internet connection  when wi-fi enabled devices encounters a hotspots the devices can than connect to that net-work wirelelissly  a single access point can support up to 30-users and can function within a range of 100-150 feet indoors and up to 300 feet outdoor.  many access point can be connected to each other via Ethernet cable to create a single large network.
  8. 8. Wi-Fi OBJECT 2.A roof-mounted Wi-Fi 1. Wireless PCI Network Card antenna 3.Wireless Network Access Point 4.Laptop Wi-Fi cards
  9. 9. 1.Wireless PCI Network Card  Network card that plugs into a PCI slot on your computers motherboard. Also available as PCMCIA cards for use in laptops  PDA or laptop to connect to your PC to share files or an Internet connection
  10. 10. 2.A roof-mounted Wi-Fi antenna  A Wi-Fi enabled device such as a personal computer, video game console, Smartphone or digital audio player can connect to the Intetnet when within range of a wireless network connected to the Internet. The coverage of one or more (interconnected) access points — called hotspots can comprise an area as small as a few rooms or as large as many square miles. Coverage in the larger area may depend on a group of access points with overlapping coverage. Wi- Fi technology has been used in wireless mesh networks, for example, in London, UK.  In addition to private use in homes and offices, Wi-Fi can provide public access at Wi-Fi hotspots provided either free-of-charge or to subscribers to various commercial services. Organizations and businesses - such as those running airports, hotels and restaurants - often provide free- use hotspots to attract or assist clients.
  11. 11. 3.Wireless Network Access Point  Allow machines to connect onto a network to share resources such as a Broadband Internet connection and a printer. If looking for an access point.  access point-: the ap is the wireless LAN transceiver or" base connection" that connect one or more wireless devices simultaneously to the internate.
  12. 12. 4.Laptop Wi-Fi cards  These are PCMCIA cards that slide into a special slot on many laptops, adding wi-fi connectivity to laptops.  wi-fi card-:they accept the wireless signal and relay information they can be internal and external.
  13. 13. WHERE IS USE OF Wi-Fi?  Offices  Homes  Industries  Hospitals  Hotels/ restaurants  Banks  IT companies
  14. 14. ADVANTAGES & DISADVANTAGES FOR Wi-Fi  The some advantages of Wi-Fi is mobility,ease of installation,costly,speed, secure,flexibility.  The disadvantages of Wi-Fi is limited range and high power consumption.
  15. 15. EXAMPLE OF Wi-Fi
  16. 16. ADVANCE VERSION OF Wi-Fi  Wi-MAX is the Advance version of Wi-Fi.  Wi-MAX is the providing the more security and range compare to Wi-Fi.  Wi-MAX stands for the Worldwide Interoperability Microwave Access.
  17. 17. BLUETOOTH  Bluetooth wireless technology is a short-range radio technology.  Bluetooth wireless technology makes it possible to transmit signals over short distances between telephones, computers and other devices and thereby simplify communication and synchronization between devices.  The Bluetooth wireless technology comprises hardware, software and interoperability requirements.  Transmits at up to 1 Mbps over a distance of 33 feet and is not impeded by physical barriers
  18. 18. WI-FI V/S BLUETOOTH  Bluetooth is the shortes range of wireless communication up to 10Fit.  Where Wi-Fi is the largest range to wireless communicate .  Bluetooth is get data to transfer speed is 1.0mbps where Wi-Fi get data transfer speed up to 802.11a to 802.11n.  Now a days Wi-Fi is the best use for people better than Bluetooth.
  19. 19. THANK YOU