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  1. 1. NADAR .R.SURESH. F.Y.Bsc.IT ROLL.NO: 31
  2. 2. What is Personal Area Network(Pan)  It is a computer network used for communication among computerized devices, including telephones and personal digital assistants.  PANs can be used for communication among the personal devices themselves (intrapersonal communication), or for connecting to a higher level network and the Internet (an uplink).
  3. 3. WPAN  A wireless personal area network (WPAN) is a PAN carried over wireless network technologies such as IrDA, Bluetooth, Wireless USB, Z-Wave, ZigBee, or even Body Area Network.  The reach of a WPAN varies from a few centimeters to a few meters. A PAN may also be carried over wired computer buses such as USB and FireWire.
  4. 4. Wireless technologies used for WPAN: Bluetooth Infrared Data Association Wi-Fi
  5. 5. Bluetooth  A Bluetooth PAN is also called a piconet.  Bluetooth uses short-range radio waves over distances up to approximately 10 metres.  A cable attached the antenna to a Bluetooth card in a computer. They later named the antenna "The BlueSniper.“  Bluetooth devices such as a keyboards, pointing devices, audio head sets, printers, etc.
  6. 6. Infrared Data Association  Infrared Data Association uses infrared light, which has a frequency below the human eye's sensitivity.  It is used in cell phones and TV remote ps3 controllers controls.  Typical WPAN devices that use IrDA include printers, keyboards, and other serial data interfaces.
  7. 7. WiFi  WiFi uses radio waves for connection over distances up to around 91 metres, usually in a local area network (LAN) environment.  Wifi can be used to connect local area networks, to connect cellphones to the Internet to download music and other multimedia, to allow PC multimedia content to be stream to the TV (Wireless Multimedia Adapter), and to connect video game consoles to their networks (Nintendo WiFi Connection).
  8. 8. Advantages of WPAN Dynamic network setup Usually quick and relatively simple to set up WPAN enabled devices are usually portable Needs less technical skills to deploy than LANs or WLANs.
  9. 9. Disadvantages of WPAN  Typically have a limited range  Currently limited to relatively slow data rates when compared with WLAN technologies  Compatibility and interoperability issues (WPAN technologies are not usually compatible with each other. Some WPAN technologies such as Bluetooth are known to have had interoperability issues between devices from different manufacturers.)  As small devices that are often associated with WPANs often have limited potential for adding extra hardware it is sometimes difficult to find suitable upgrade equipment.  Devices with inbuilt WPAN technologies can be considerably more expensive than devices without WPAN technologies.
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