SWRA791 February   2024 CC2340R5 , CC2340R5-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Basics of Bluetooth Channel Sounding
  6. 3Bluetooth Channel Sounding Procedure
  7. 4Bluetooth Channel Sounding Flow for Phase-Based Ranging
  8. 5Channel Sounding Security
  9. 6Summary
  10. 7References
  11.   Appendix A: Basics of Phase Based Ranging and Multi-Carrier Phase Ranging

Abstract

The upcoming Bluetooth Channel Sounding feature extends Bluetooth based ranging beyond the supported received signal strength indication (RSSI) and direction findings (DF) capabilities to enable high-accuracy, low-cost, secure ranging designs.

This application note presents the basics of Bluetooth channel sounding technology – using phase based ranging to enhance accuracy and round trip time (RTT) of random modulated data packets to enhance security. The document also provides an overview of the channel sounding procedures using Bluetooth LE devices to perform the ranging operations.