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Key Learning Points Of Bluetooth
technology. When it comes to learning, Bluetooth can get quite complicated. To help you, you'll find the key learning points of Bluetooth below: 1. Bluetooth is an energy efficient, low overhead communication protocol that's ideal for interdevice communications. 2. Unlike infrared, Bluetooth doesn't 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 aren't 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.
Bluetooth Glossary |
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Advantages And Disadvantages Bluetooth has a lot to offer with an increasingly difficult market place. Bluetooth helps to bring with it the promise of freedom from the cables and simplicity in networking that has yet to be matched by LAN (Local Area Network). In... Bluetooth Technical Operations Bluetooth is a high speed, low powered wireless link technology that's designed to connect phones or other portable equipment together with little to no work required by the user. Unlike infrared, Bluetooth doesn't require line of site... Bluetooth In Action In the United States, Bluetooth gets absolutely no respect. It is however, becoming more and more common in notebooks, PDAs, and especially cell phones. Bluetooth will provide wireless users a way to transmit small amounts of data over... Bluetooth Profiles The profile found in Bluetooth will describe how the technology is used. Profiles can be best described as vertical slices through the protocol stack. It will define options in each protocol that are mandatory for the profile. The... Bluetooth Specifications Below, you'll find several specifications for the well known Bluetooth: 1. Throughout the United States and even Europe, the range of frequency is 2,400 - 2,483.5 MHZ, with 79 1-MHz RF (radio frequency) channels. The frequency range... Bluetooth Versions Version 1.1 and earlier Since the technology of Bluetooth was introduced in 1998, several specification versions have been released. Versions 1.0 and 1.0B had too many issues and problems for manufacturers to develop devices for... Bluetooth Wireless Networking Bluetooth technology offers three different types of defined ranges, based on output ranges. Class 1 devices are the most powerful, as they can have up to 100 mW of power, with a regular antenna giving them a range of around 130 - 330... Connecting Many With Bluetooth Constantly evolving, the technology of Bluetooth started off as a basic wireless connection standard but has since then been adapted and proven with many different uses and functions. A good example is Bluetooth for cell phones. It ... Introduction To Bluetooth Bluetooth was designed to allow low bandwidth wireless connections to become easy to use so even those who are new to wireless can use them. Version 1.1 of Bluetooth describes a low power, short range wireless networking technology that... The Bluetooth Solution The technology of Bluetooth will take small area networking to the next level by removing the need for user intervention and help keep transmission power very low to preserve battery power. Each transmission signal to and from your cellular...
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