Bluetooth SIG releases core 6.2 specifications

The Bluetooth Special Interest Group released Bluetooth core 6.2 as part of its bi-annual cadence. The specification package focuses on responsiveness, security, communication, and testing capabilities for Bluetooth Low Energy devices. The SIG said the update is intended to provide developers with tools to meet evolving market demands and to reinforce the standards bodyu2019s commitment to continuous innovation.

Key technical changes include Bluetooth shorter connection intervals, which reduce the minimum Bluetooth LE connection interval from 7.5 ms to 375 microseconds, enabling much faster responsiveness for high-performance human interface devices, real-time human-machine interfaces, and latency-sensitive sensors. Bluetooth channel sounding amplitude-based attack resilience adds protections against sophisticated amplitude-based radio-frequency attacks, strengthening secure ranging systems and mitigating relay and spoofing threats relevant to automotive, smart home, and industrial applications. Bluetooth HCI USB LE isochronous support introduces bulk serialization mode, a mechanism to standardize isochronous data transmission over USB that simplifies host-controller interface packet handling and streamlines Bluetooth LE Audio integration for USB-based systems.

Bluetooth LE test mode enhancements provide a unified, future-proof control protocol for performing Bluetooth LE RF PHY tests and add support for over-the-air transport, removing the need for a cabled test setup. Together, these updates aim to make device integration and validation easier while addressing latency and security challenges across multiple sectors. The release concentrates on practical interoperability and developer-facing features rather than platform-specific implementations, leaving manufacturers and software teams to adopt the new modes and protections according to product requirements.