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Bluetooth Channel Sounding: Revolutionizing Distance Measurement

Bluetooth 6 Channel Sounding Explained: Centimeter-Level Ranging with MCX W72 & KW47 Rakshit Grover and Manisha Phadke join the EdgeVerse Techcast to discuss how Bluetooth 6 Channel Sounding brings spatial awareness to Bluetooth Low Energy. They explain how Channel Sounding enables accurate, secure distance measurement between an Initiator and Reflector, moving beyond RSSI by combining Phase-Based Ranging (PBR) for accuracy with Round-Trip Time (RTT) for security, achieving centimeter-level ranging. The conversation covers key applications such as smart home automation, automotive keyless entry and smart locks, IoT ambient awareness, industrial asset tracking, and improved indoor navigation. NXP platforms enabling Channel Sounding—MCX W72 for industrial IoT/automation and KW47 for automotive—both feature a dedicated Localization Compute Engine (LCE) for faster response and improved power efficiency. Developers are pointed to hands-on resources, including step-by-step videos and an Application Code Hub project using FRDM boards to demonstrate Channel Sounding. Resources: • NXP Channel Sounding Demo with KW47 and Oled B Click (https://nxp1.sharepoint.com/:v:/r/sit...) • ACH Project: Matter Bluetooth Channel Sounding Demo on MCXW72 (https://mcuxpresso.nxp.com/appcodehub...) • BLOG: Exploring Bluetooth Channel Sounding on the FRDM-MCXW72 Dev Board (https://www.nxp.com/company/about-nxp...) 00:00 Introduction and Hosts 00:30 Understanding Bluetooth Channel Sounding 02:24 NXP's Engagement in Bluetooth Low Energy 03:40 Technical Insights into Channel Sounding 05:10 Applications and Benefits of Channel Sounding 07:08 NXP's Solutions for Developers 08:15 Resources and Future Developments 09:58 Conclusion and Summary