BluetoothSIG-鲁公羽蓝牙信道探测技术概览

Technical Overview of Bluetooth® Channel SoundingGongyu LuTechnical Marketing EngineerBluetooth SIG, Inc•Why Bluetooth® Channel Sounding?•Bluetooth Channel Sounding technical overview•Reference materialsAgendaAccurate: Based on Phase-Based Ranging, a well-proven methodSecure: Multi-level security to mitigate wireless ranging attacksUbiquitous: Embedded in major consumer platform devicesWhy Bluetooth® Channel Sounding?X centimetersDistanceEnables “centimeter-level” accuracyEarly implementations achieving +/- 20 cm up to 100m•Operation summary•Ranging methods•Bluetooth stack changes•Key proceduresBluetooth® Channel Sounding Technical Overview•Security measures•Ranging Profile and Service•Distance measurement algorithms•Resources for additional learning•One-to-one topology between two Bluetooth devices•Two Bluetooth® Channel Sounding (CS) device roles•Initiator: Device wishing to calculate the distance to another •Reflector: Device responding to the Initiator•Application layer provides co