文档介绍：BluetoothLowEnergyanditsConvergencewithLightweightIPv622Apr,2012Atalkat‘******@BeihangUniversityCanfengChen,PhDNokiaResearchCenter,RadioSystemsLab1Agenda•BluetoothLowEnergy&Bluetoothroadmap•BluetoothLowEnergystack&chips&products•LightweightIPv6forBluetoothLowEnergy2Agenda•BluetoothLowEnergy&Bluetoothroadmap•BluetoothLowEnergystack&chips&products•+++HSHighSpeed2009~-•NokiaNRCmadeaproposalin2001•BT_LEE(BluetoothLowerEnergyEnd)•WibreeForumwasformedin2006•BT-SIGrenamedittoUltraLowPower(ULP)in2007•In2008BT-SIGannouncedBluetoothLowEnergyasthemarketingnameforULP•BT-SIGreleasedBluetoothSpecv4,•October2011,BT-SIGrenamedBLEasBluetoothSmart(singlemode),andBluetoothSmartReady(dualmode)5BluetoothLowEnergy–•Bluetoothlowenergytechnologyisaglobalstandard,verylowpowerwirelesstechnology•BluetoothlowenergytechnologyenablesdeviceswithcoincellbatteriestobewirelesslyconnectedtostandardBluetoothenableddevices6BR/parison7Principlesofultralowpoweroperation•Lowdutycycle,shortpackagesandhighonairdatarate•Connectionintervalsfrom3msto4s+•Shortdatapackets–upto31bytespayload•1Mbpson-airdatarate•Systemspendsmosttimeinsleepmode•RFisononlyasmallfractionofthetime•Fastconnectiontime•Devicescanconnectin3ms•Allowsforfastconnection,senddataandthendisconnect•Systemcanspendmostofthetimeindeepsleep•Lowpeakpower••Bluetoothlowenergytechnologyusesonly3advertisingchannels•Bluetoothtechnologyuses16to32channels••Idlecurrentisdominatedbydeepsleepcurrent•Sensortypeofapplicationssenddatalessoften()•RFcurrentisneglig