World Library  
Flag as Inappropriate
Email this Article

Personal area network

Article Id: WHEBN0000023303
Reproduction Date:

Title: Personal area network  
Author: World Heritage Encyclopedia
Language: English
Subject: HiSilicon, Bluetooth, Big.LITTLE Config, Local area network, Near-me area network
Collection: Bluetooth, Personal Area Networks, Wireless Networking
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Personal area network

A personal area network (PAN) is a computer network used for data transmission among devices such as computers, 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).

A wireless personal area network (WPAN) is a PAN carried over wireless network technologies such as:

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.

Contents

  • Wired PAN connection 1
  • Wireless Personal Area Network 2
    • Bluetooth 2.1
    • Infrared Data Association 2.2
    • Wi-Fi 2.3
    • Body area network 2.4
  • See also 3
  • References 4
  • External links 5

Wired PAN connection

The data cable is an example of the above PAN. This is also a Personal Area Network because that connection is for the users personal use. PAN is used for personal use only.

Wireless Personal Area Network

A wireless personal area network (WPAN) is a personal area network — a network for interconnecting devices centered on an individual person's workspace — in which the connections are wireless. Wireless PAN is based on the standard IEEE 802.15. The two kinds of wireless technologies used for WPAN are Bluetooth and Infrared Data Association.

A WPAN could serve to interconnect all the ordinary computing and communicating devices that many people have on their desk or carry with them today; or it could serve a more specialized purpose such as allowing the surgeon and other team members to communicate during an operation.

A key concept in WPAN technology is known as "plugging in". In the ideal scenario, when any two WPAN-equipped devices come into close proximity (within several meters of each other) or within a few kilometers of a central server, they can communicate as if connected by a cable. Another important feature is the ability of each device to lock out other devices selectively, preventing needless interference or unauthorized access to information.

The technology for WPANs is in its infancy and is undergoing rapid development. Proposed operating frequencies are around 2.4 GHz in digital modes. The objective is to facilitate seamless operation among home or business devices and systems. Every device in a WPAN will be able to plug into any other device in the same WPAN, provided they are within physical range of one another. In addition, WPANs worldwide will be interconnected. Thus, for example, an archeologist on site in Greece might use a PDA to directly access databases at the University of Minnesota in Minneapolis, and to transmit findings to that database.

Bluetooth

Bluetooth uses short-range radio waves over distances up to approximately 10 metres. For example, Bluetooth devices such as a keyboards, pointing devices, audio head sets, printers may connect to personal digital assistants (PDAs), cell phones, or computers wirelessly.

A Bluetooth PAN is also called a piconet (combination of the prefix "pico," meaning very small or one trillionth, and network), and is composed of up to 8 active devices in a master-slave relationship (a very large number of devices can be connected in "parked" mode). The first Bluetooth device in the piconet is the master, and all other devices are slaves that communicate with the master. A piconet typically has a range of 10 metres (33 ft), although ranges of up to 100 metres (330 ft) can be reached under ideal circumstances.

Infrared Data Association

Infrared Data Association (IrDA) uses infrared light, which has a frequency below the human eye's sensitivity. Infrared in general is used, for instance, in TV remotes. Typical WPAN devices that use IrDA include printers, keyboards, and other serial data interfaces.[1]

Wi-Fi

Wi-Fi uses radio waves for connection over distances[2] up to around 91 metres, usually in a local area network (LAN) environment. Wi-Fi 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 Wi-Fi Connection).

Body area network

A body area networks is based on the IEEE 802.15.6 standard for transmission via the capacitive near field of human skin allowing near field communication of devices worn by and near the wearer.[3] The Skinplex implementation can detect and communicate up to 1 metre (3 ft 3 in) from a human body.[4] It is used for access control to door locks and jamming protection in convertible car roofs. Projects that implement Body Area Network include the work of RedTacton RT/Aswini.

See also

References

  1. ^ Charles D. Knutson with Jeffrey M. Brown, IrDA Principles and Protocols, 2004, ISBN 0-9753892-0-3
  2. ^ Davis, Harold (2004). Absolute Beginner's Guide to Wi-Fi Wireless Networking. Que Publishing. pp. 8–9.  
  3. ^ "IEEE 802.15 WPAN Task Group 6 (TG6) Body Area Networks". IEEE Standards Association. 9 Jun 2011. Retrieved 9 Dec 2011. 
  4. ^ skinplex.net

External links

  • Intrabody Signalling by Tom Zimmerman and Neil Gershenfeld
    • Archived version with working downloads
  • ASPAN - Next Generation Personal Area Networks
  • IEEE 802.15 Working Group for WPAN
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 


Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.