Bluetooth technology by polite group


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This Presentation is prepared by the higher authority of polite group
under the supervision of Syed Mubashair Abid and other members are Ch.Junaid Arshad and Muhammad Aftab Mustafa

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  • Bluetooth is open standard for short range connectivity
  • Bluetooth is open standard for short range connectivity
  • Bluetooth is open standard for short range connectivity
  • Bluetooth is open standard for short range connectivity
  • Bluetooth technology by polite group

    1. 1. Company LOGOBluetooth in wirelessCommunication
    2. 2. COMPANYLOGOGroup#4Group MembersPolite GroupM.AftabMustafaJunaid ArshadSyed MubashirAbid
    3. 3. COMPANYLOGOPolite GroupContentsOverview1Why Bluetooth2Features3Classes of bluetooth4
    4. 4. COMPANYLOGOPolite GroupContentsBluetooth topology1Security of Bluetooth2Bluetooth Protocol stack3Application/Advantages/Disadvantages4
    5. 5. COMPANYLOGOPolite GroupOver ViewIntroductionBluetooth is short rangewireless communicationtechnologyBluetooth SIG.Over View.HistoryThe Bluetooth name camefrom Danish king HaraldBlatandThis technology was born in1994First version was release in1999
    6. 6. COMPANYLOGOIntroductionBluetooth is a short range low powerwireless technology standard forexchanging data over short distances. Bluetooth is a wireless technology forcreating personal networks operating in the2.4 GHz unlicensed band, with a range of 10meters Networks are usually formed ad-hoc fromportable devices such as cellular phones,handhelds and laptops.Polite Group
    7. 7. COMPANYLOGOWhy Bluetooth Cable replacement between devices Supported by major companies Open specification Capable handling of both voice and datasimultaneously Low power consumption and Slowtransmission rate Connection can be initiated without userinteraction Devices can be connected to a multipledevices at the same timePolite Group
    8. 8. COMPANYLOGOPolite GroupTechnical FeaturesConnection Type Spread Spectrum andtime division duplexFrequency Band 2.4GHzData rate per channel 1 to 3 Mb/secNetwork Topology StarTransmission Power 1mw-100mwRange 30ftSupporting Station 8 devicesData security-Authentication Key128 bit keyData security-Encryptionkey8-128bitsModule size 9x9 mm
    9. 9. COMPANYLOGOPolite GroupFeatures of Bluetooth Broadcast channelEnable Bluetooth information points that will drive the adoption ofBluetooth into the cell phones and enable advertising model based arounduser pulling information Topology managementEnable automatic configuration of pointsAutomatic configuration of Bluetooth topology Alternative MAC PHYFor transporting Bluetooth profile dataFor sending lots of data at high speed QOS ImprovementTransmission at higher qualityEnable the use of alternative MAC and PHY’s for transporting Bluetoothprofile data
    10. 10. COMPANYLOGOClasses of BluetoothBluetooth devices are classified inthree different power classes asshown in the following tablePolite GroupClass Maximumparameter power(mW)Range(approximately)Class1 100mW 100 meterClass2 2.5mW 10 meterClass3 1mW 1 meter
    11. 11. COMPANYLOGOApplication AreasData and Voice Access pointsReal time voice and data transmission Cable ReplacementEliminates need for numerous cableattachment for connection Ad-Hoc NetworkingDevice with Bluetooth radio canestablishment connection with another when inrangePolite Group
    12. 12. COMPANYLOGOPolite GroupBluetooth TopologyPiconets A set of Bluetooth devices sharing a common channel is called apiconets.Scatternets Scatternets are two or more independent and non-synchronizedpiconets that communicate with each other by making bridgenode
    13. 13. COMPANYLOGOPolite GroupBluetooth securitySafer Transmission of data in Bluetooth 2.0 and late version1. BluejackingBluejacking is the sending of unsolicited messages over Bluetooth toBluetooth-enabled devices such as mobile phones2. BluesnarffingBluesnarfing is the unauthorized access of information from a wirelessdevice through a Bluetooth connection, often betweenphones, desktops, laptops, and PDAs. This allows access to acalendar, contact list, emails and text messages, and on some phonesusers can copy pictures and private videoBluetooth error correction scheme1. FEC(forward error correction)The sender encodes the data using an error-correcting code (ECC) prior totransmission.2. ARQ unnumbered scheme(Automatic repeat request)• Blocks of data are verified using the error detection code• Receiver requests for retransmission of erroneous data.
    14. 14. COMPANYLOGOFHSS Frequency-hopping spread spectrum (FHSS) is a method of transmittingradio signals by rapidly switching a carrier among many frequency channels,using a pseudorandom sequence known to both transmitter and receiver. Itis utilized as a multiple access method in the frequency-hopping codedivision multiple access (FH-CDMA) scheme Bluetooth devices use a protocol called (FHHS) Frequency-HoppingSpread Spectrum . Uses packet-switching to send data. Bluetooth sends packets of data on a range of frequencies. In each session one device is a master and the others are slaves. The master device tells the slaves at what frequency data will besent. This technique allows devices to communicate with each other moresecurely.Polite Group
    15. 15. COMPANYLOGOBluetooth Protocol StackPolite Group
    16. 16. COMPANYLOGOBluetooth Protocol Stack RF LayerThe Radio (layer) is the lowest defined layer of the Bluetoothspecification.It defines the requirements of the Bluetooth transceiver device operatingin the 2.4GHz ISM bandIt uses a packet switching protocol Baseband layerThis layer defines the timing, framing, packets and flow control on thelink. Link ManagerResponsible for managing connection states(authentication & encryption),enforcing fairness among slaves & power management Logical Link LayerHandles multiplexing, segmentation and reassembly of large packets anddevice discovery.Polite Group
    17. 17. COMPANYLOGOBluetooth Protocol Stack Logical link control and adaptation protocolL2CAP is used within the Bluetooth protocol stack. It passes packets toeither the Host Controller Interface (HCI) or on a hostelss system, directlyto the Link Manager/ACL link.L2CAPs functions include: Multiplexing data between different higher layer protocols. Segmentation and reassembly of packets. Providing one-way transmission management of multicast data to a groupof other Bluetooth devices. Quality of service (QoS) management for higher layer protocols Service discovery protocol (SDP)Used to allow devices to discover what services each other support, andwhat parameters to use to connect to them Telephony Control Protocol SpecificationTCS defines the call control signaling that is used by Bluetooth devicesfor the establishment of speech and data callsPolite Group
    18. 18. COMPANYLOGOPolite GroupDiagramDisadvantagesAdvantagesHealth concernApplicationsBluetooth
    19. 19. COMPANYLOGOAdvantages Eliminates wire Facilitate data and voice communication Offer formation of Ad-Hoc network Standardized Protocols Free of charge Easy to use Low power consume battery less Bluetooth technology is inexpensivePolite Group
    20. 20. COMPANYLOGODisadvantagesRelatively short rangeLess secureInterference with other devicesMedicore data ratesBluetooth internet connection getsslow sometimesPolite Group
    21. 21. COMPANYLOGOHealth Concern The carrier wave use by Bluetooth transmitter is the samefrequency range of microwave oven The transmitting power is far to weak to be noticeable for humans The radiation output power is Bluetooth devices is low so it isassumed that the potential for health risk are lowerPolite Group
    22. 22. COMPANYLOGOApplicationPolite Group
    23. 23. COMPANYLOGORefrences Stalling,W(2007) Wireless Communication and Network 2ndEdition PP 463-509Polite Group
    24. 24. Company LOGO