Thursday, April 17, 2008
Latest information on bluetooth headsets for nokia
Key Learning Points Of Bluetooth
By Debra Goh
Bluetooth is easily the best in wireless handheld technology. When it comes to learning, Bluetooth can get quite complicated. To help you, youll find the key learning points of Bluetooth below:
1. Bluetooth is an energy efficient, low overhead communication protocol thats ideal for interdevice communications.
2. Unlike infrared, Bluetooth doesnt require a line of sight.
3. Depending on the implementation, Bluetooth can have a range of up to 100 meters.
4. The specification of Bluetooth consists of a Foundation Profile Document and a Foundation Core Document.
5. The protocol stack for Bluetooth consists of core protocols, cable protocols, and even adapted protocols.
6. The transmitter operates around the 2.4 GHz frequency band.
7. The data channel will change frequency, or hops, 1,600 times in a second, between the 79 allocated channels in the ISM band.
8. Bluetooth utilizes a spread spectrum frequency hopping RF characteristic to ensure that independant networking operates when the other devices are in range.
9. A piconet is formed when one or more devices open up a channel of communication.
10. A piconet can have a master and up to seven slaves.
11. Communication of the interdevice is based on the concepts of channels.
12. All Bluetooth devices are capable of transmitting voice.
13. The channel has a total capacity of 1 MB per second.
14. There are two types of channels with Bluetooth - SCO (Synchronous Connection Oriented) and ACL (Asynchronous Connectionless).
15. The SCO channels are time oriented, and are therefore primarily used for transferring time critical data such as voice.
16. ACL channels are normally used for communicating data.
17. Data contained in a packet can be up to 2,745 bits in length.
18. In a single piconet, there can be up to three SCO links containing 64,000 bits a second each.
19. To avoid collision and timing problems, SCO links are reserved slots that are set up by the master.
20. The masters can support up to three SCO links with either one, two, or three slaves.
21. The slots that arent reserved for SCO links can be used as ACL links.
22. The LMP (Link Management Protocol) will handle link level security, error corrections, and the establishment of communications links.
23. The LMP packets will have priority over user packets that originate and form the L2CAP layer.
24. The L2CAP layer will ensure an acceptable quality of service.
25. No more than one ACL link can exist at the L2CAP layer.
About The Author
Debra Goh is an internet entrepreneur and a freelance writer. You can visit her at http://free--cell-phone.blogspot.com
Secured Digital Announces Launch of Its Bluetooth Enabled ...
Earthtimes - London,UK
The applications will be driven by Secured Digital�s copyrighted Bluber (www.bluber.com.my) Bluetooth Proximity Marketing software program. ...
See all stories on this topic
Ski helmet that lets you talk on phone is crazy
Anchorage Daily News (subscription) - Anchorage,AK,USA
(A) Bluetooth LINK offers in-helmet stereo paired with technology from Skullcandy that allows you to hardline into your music player, all while connecting ...
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Multifunction watches
Global Sources - Singapore
Apart from music players, products now have a bigger storage capacity, Bluetooth capability and a TV remote control feature. Quartz analog watch suppliers ...
See all stories on this topic
Lockheed Martin Opens Wireless Wi-Fi Cyber Security Lab
Fri, 18 Apr 2008 00:00:00 EST
Lockheed Martin (NYSE: LMT) recently opened a new Wireless Cyber Security Center, one of only a handful of technology labs capable of testing wireless communications systems in a classified environment. The lab allows defense and intelligence agencies to test and evaluate wireless systems like 802.11 Wi-Fi or broadband satellite links on a Top Secret / Sensitive Compartmented Information (TS/SCI) network.
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bluetooth headsets for sale | bluetooth motorola stereo headsets | bluetooth printers
¶ 7:05 PM 
Key Learning Points Of Bluetooth
By Debra Goh
Bluetooth is easily the best in wireless handheld technology. When it comes to learning, Bluetooth can get quite complicated. To help you, youll find the key learning points of Bluetooth below:
1. Bluetooth is an energy efficient, low overhead communication protocol thats ideal for interdevice communications.
2. Unlike infrared, Bluetooth doesnt require a line of sight.
3. Depending on the implementation, Bluetooth can have a range of up to 100 meters.
4. The specification of Bluetooth consists of a Foundation Profile Document and a Foundation Core Document.
5. The protocol stack for Bluetooth consists of core protocols, cable protocols, and even adapted protocols.
6. The transmitter operates around the 2.4 GHz frequency band.
7. The data channel will change frequency, or hops, 1,600 times in a second, between the 79 allocated channels in the ISM band.
8. Bluetooth utilizes a spread spectrum frequency hopping RF characteristic to ensure that independant networking operates when the other devices are in range.
9. A piconet is formed when one or more devices open up a channel of communication.
10. A piconet can have a master and up to seven slaves.
11. Communication of the interdevice is based on the concepts of channels.
12. All Bluetooth devices are capable of transmitting voice.
13. The channel has a total capacity of 1 MB per second.
14. There are two types of channels with Bluetooth - SCO (Synchronous Connection Oriented) and ACL (Asynchronous Connectionless).
15. The SCO channels are time oriented, and are therefore primarily used for transferring time critical data such as voice.
16. ACL channels are normally used for communicating data.
17. Data contained in a packet can be up to 2,745 bits in length.
18. In a single piconet, there can be up to three SCO links containing 64,000 bits a second each.
19. To avoid collision and timing problems, SCO links are reserved slots that are set up by the master.
20. The masters can support up to three SCO links with either one, two, or three slaves.
21. The slots that arent reserved for SCO links can be used as ACL links.
22. The LMP (Link Management Protocol) will handle link level security, error corrections, and the establishment of communications links.
23. The LMP packets will have priority over user packets that originate and form the L2CAP layer.
24. The L2CAP layer will ensure an acceptable quality of service.
25. No more than one ACL link can exist at the L2CAP layer.
About The Author
Debra Goh is an internet entrepreneur and a freelance writer. You can visit her at http://free--cell-phone.blogspot.com
Secured Digital Announces Launch of Its Bluetooth Enabled ...
Earthtimes - London,UK
The applications will be driven by Secured Digital�s copyrighted Bluber (www.bluber.com.my) Bluetooth Proximity Marketing software program. ...
See all stories on this topic
Ski helmet that lets you talk on phone is crazy
Anchorage Daily News (subscription) - Anchorage,AK,USA
(A) Bluetooth LINK offers in-helmet stereo paired with technology from Skullcandy that allows you to hardline into your music player, all while connecting ...
See all stories on this topic
Multifunction watches
Global Sources - Singapore
Apart from music players, products now have a bigger storage capacity, Bluetooth capability and a TV remote control feature. Quartz analog watch suppliers ...
See all stories on this topic
Lockheed Martin Opens Wireless Wi-Fi Cyber Security Lab
Fri, 18 Apr 2008 00:00:00 EST
Lockheed Martin (NYSE: LMT) recently opened a new Wireless Cyber Security Center, one of only a handful of technology labs capable of testing wireless communications systems in a classified environment. The lab allows defense and intelligence agencies to test and evaluate wireless systems like 802.11 Wi-Fi or broadband satellite links on a Top Secret / Sensitive Compartmented Information (TS/SCI) network.
bluetooth mp3 headset
bluetooth accessories
bluetooth headset ratings
bluetooth headsets for sale | bluetooth motorola stereo headsets | bluetooth printers
