25-08-2012, 12:04 PM
BLUE TOOTH
BLUETOOTH.doc (Size: 149 KB / Downloads: 29)
INTRODUCTION:
Wireless LANs are the hot new enterprise technology that every one is talking about and considering implementing in varying degrees for vertical markets like medical, education and manufacturing.
Before delving straight into the details of wireless LAN standards let’s take a look at technologies that make it possible for a wireless LAN to operate. These technologies are
• Radio frequency systems
• Infrared systems
• Spread spectrum implementation
• Frequency Hopping Speed Spectrum
• Direct Sequence Speed Spectrum
Definition to Blue Tooth:
It is a two-year old Technology, which is a short-range radio Technology that allows wireless data transmission between various computing and communication devices up to a distance of 10meters or 30feet and offers data transfer rates up to 1MBPS.
It is named after HAROLD BLUETOOTH a 10century Danish king who united Norway and Denmark with a short-range radio technology that allows voice and data
HOW IT WORKS:-
Blue tooth uses the FHSS (Frequency Hopping Spread Spectrum) protocol as wireless LAN standard. Spread spectrum technology is a wide band radio frequency technique developed by the military for use in reliable, secure, mission-critical communication system. Spread-spectrum is designed to trade off bandwidth efficiency for reliability, integrity and security.
Frequency Hopping spread spectrum (FHSS) uses a narrow band carrier that changes frequency in a pattern know to both transmitter and receiver.
FHSS appears to be short-duration impulse noise radios in Blue tooth can be master or slave or be in simultaneous scenarios.
Bluetooth Radio:
Bluetooth Radio is Transceiver which transmits and receives modulated electrical signals from peer Bluetooth devices. The radio for compatibility reasons should have some defined transmitter and receiver characteristics.
Baseband:
Baseband is the physical layer of Bluetooth that manages physical channels and links apart from other services like end correction, data whitening, hop selection and Bluetooth security.
ACL:
ACL is Asynchronous Connectionless physical link for Transmitting data over physical channels. ACL link provides a packet switched connection between the master and all the active sales.
SCO:
SCO is Synchronous Connection Oriented physical for voice-like information. It is a symmetric point-to-point link between the master and a specific slave. It behaves like a circuit-switched connection.
Link Manager:
Essentially handles link set-up, security and control. It provides services like autherification, encryption control, power control and provides QOS capabilities. It also manages devices in different modes.
L2 Cap:
It is the logical link control and adoption layer protocol. It resides in the data link layer and provides connectionless and connection-oriented data services to upper layer protocols with protocol multiplexing capability, segmentation and reassemble operation and group abstraction.
It permits higher-level protocols and applications to transmit and receive L2 cap data packets up to 64KB in length.
SDP:
It is Service Discovery Protocol for applications to discover which services are available and to determine the characteristics of these available services.
RFCOMM:
It is a Simple Transport Protocol. It supports up to 60 simultaneous connections between two Bluetooth devices.
WHEN WILL IT TAKE OFF:
Blue Tooth wireless technology is the marriage of the telecom and computing industries, scans cables.
Blue Tooth is set to revolutionize the person connectivity market by providing freedom from wired connections.
The idea that triggered on this technology in the late 1990’s to eliminate the uses of cables altogether, enabling users to connect a wide range of computing and telecommunications devices easily and simply, without the need to buy, care or connect cables.
Primary advantage of Blue Tooth is its technology is that it uses the 2.46HZ Industrial, Scientific and Medical countries.
MARKET ACCEPTENCE:
Vendors are doing a lot of work for embedding Bluetooth as product, it just a trickle now. It is expected to explode soon, the number of Blue tooth enabled devices is expected to reach 700 million by 2004.
Since it is introducing into the market for the last five-six months, It is just beginning to see the light of day.
Efforts are making to develop a new product around the Blue tooth stack in terms of user acceptance.
Bluetooth SIG comprising of industry hereby weights like IBM, NOKIA, Ericsson and 2000 other small and big companies. To promote it to worldwide. Now SIG is working to secure the approval for the use of Bluetooth through out the world.
CONCLUSION:
We can conclude that Blue Tooth is an emerging technology. Even though it is a emerging technology blue tooth has to receive the over whelming support of all digital and computer equipment manufactures to become a basic unit in the production process.
BLUETOOTH.doc (Size: 149 KB / Downloads: 29)
INTRODUCTION:
Wireless LANs are the hot new enterprise technology that every one is talking about and considering implementing in varying degrees for vertical markets like medical, education and manufacturing.
Before delving straight into the details of wireless LAN standards let’s take a look at technologies that make it possible for a wireless LAN to operate. These technologies are
• Radio frequency systems
• Infrared systems
• Spread spectrum implementation
• Frequency Hopping Speed Spectrum
• Direct Sequence Speed Spectrum
Definition to Blue Tooth:
It is a two-year old Technology, which is a short-range radio Technology that allows wireless data transmission between various computing and communication devices up to a distance of 10meters or 30feet and offers data transfer rates up to 1MBPS.
It is named after HAROLD BLUETOOTH a 10century Danish king who united Norway and Denmark with a short-range radio technology that allows voice and data
HOW IT WORKS:-
Blue tooth uses the FHSS (Frequency Hopping Spread Spectrum) protocol as wireless LAN standard. Spread spectrum technology is a wide band radio frequency technique developed by the military for use in reliable, secure, mission-critical communication system. Spread-spectrum is designed to trade off bandwidth efficiency for reliability, integrity and security.
Frequency Hopping spread spectrum (FHSS) uses a narrow band carrier that changes frequency in a pattern know to both transmitter and receiver.
FHSS appears to be short-duration impulse noise radios in Blue tooth can be master or slave or be in simultaneous scenarios.
Bluetooth Radio:
Bluetooth Radio is Transceiver which transmits and receives modulated electrical signals from peer Bluetooth devices. The radio for compatibility reasons should have some defined transmitter and receiver characteristics.
Baseband:
Baseband is the physical layer of Bluetooth that manages physical channels and links apart from other services like end correction, data whitening, hop selection and Bluetooth security.
ACL:
ACL is Asynchronous Connectionless physical link for Transmitting data over physical channels. ACL link provides a packet switched connection between the master and all the active sales.
SCO:
SCO is Synchronous Connection Oriented physical for voice-like information. It is a symmetric point-to-point link between the master and a specific slave. It behaves like a circuit-switched connection.
Link Manager:
Essentially handles link set-up, security and control. It provides services like autherification, encryption control, power control and provides QOS capabilities. It also manages devices in different modes.
L2 Cap:
It is the logical link control and adoption layer protocol. It resides in the data link layer and provides connectionless and connection-oriented data services to upper layer protocols with protocol multiplexing capability, segmentation and reassemble operation and group abstraction.
It permits higher-level protocols and applications to transmit and receive L2 cap data packets up to 64KB in length.
SDP:
It is Service Discovery Protocol for applications to discover which services are available and to determine the characteristics of these available services.
RFCOMM:
It is a Simple Transport Protocol. It supports up to 60 simultaneous connections between two Bluetooth devices.
WHEN WILL IT TAKE OFF:
Blue Tooth wireless technology is the marriage of the telecom and computing industries, scans cables.
Blue Tooth is set to revolutionize the person connectivity market by providing freedom from wired connections.
The idea that triggered on this technology in the late 1990’s to eliminate the uses of cables altogether, enabling users to connect a wide range of computing and telecommunications devices easily and simply, without the need to buy, care or connect cables.
Primary advantage of Blue Tooth is its technology is that it uses the 2.46HZ Industrial, Scientific and Medical countries.
MARKET ACCEPTENCE:
Vendors are doing a lot of work for embedding Bluetooth as product, it just a trickle now. It is expected to explode soon, the number of Blue tooth enabled devices is expected to reach 700 million by 2004.
Since it is introducing into the market for the last five-six months, It is just beginning to see the light of day.
Efforts are making to develop a new product around the Blue tooth stack in terms of user acceptance.
Bluetooth SIG comprising of industry hereby weights like IBM, NOKIA, Ericsson and 2000 other small and big companies. To promote it to worldwide. Now SIG is working to secure the approval for the use of Bluetooth through out the world.
CONCLUSION:
We can conclude that Blue Tooth is an emerging technology. Even though it is a emerging technology blue tooth has to receive the over whelming support of all digital and computer equipment manufactures to become a basic unit in the production process.