The Bluetooth Special Interest Group (Bluetooth SIG) has officially released the Bluetooth 6.2 specification, marking another major leap in the evolution of wireless communication standards. This version delivers improvements in connection responsiveness, security robustness, and USB-based data handling.
Bluetooth 6.2 introduces a Shortened Connection Interval (SCI) to significantly reduce latency between devices, strengthens protection against amplitude-based RF attacks, and adds a new Batch Serialization Mode for USB communication — particularly enhancing support for Low Energy (LE) Audio over USB interfaces. In addition, the standard refines the BLE testing modes, simplifying testing workflows for developers and QA engineers.
If you’ve noticed that Bluetooth versions seem to be appearing more frequently, that’s no coincidence — the Bluetooth SIG has shifted to a semiannual release cycle. For instance, Bluetooth 6.1 was released in May 2024, and the new 6.2 version continues this six-month update cadence.
Core Highlights and Technical Parameters of Bluetooth 6.2
The following table outlines the key improvements, technical enhancements, and main application scenarios in Bluetooth 6.2.
| Feature | Technical Enhancements | Primary Applications |
|---|---|---|
| Shortened Connection Interval (SCI) | Reduces the minimum Bluetooth LE connection interval from 7.5 ms to 375 µs, dramatically improving response time and lowering latency. | High-performance HID devices, real-time HMI systems, latency-sensitive sensors, AR/VR applications, gaming peripherals. |
| Enhanced Resistance to Amplitude-Based RF Attacks | Introduces a dedicated protection mechanism to counter complex amplitude-based RF interference and spoofing. | Automotive systems, smart home controllers, industrial control units—helps mitigate relay and impersonation attacks. |
| HCI USB Low Energy Isochronous Transfer Support | Implements a new “Batch Serialization Mode” to streamline USB data synchronization and simplify HCI packet management. | USB-based Bluetooth devices, particularly improving integration for LE Audio over USB connections. |
| Enhanced BLE Test Modes | Unifies PHY-level control protocols for LE RF testing, adding over-the-air (OTA) transmission support to reduce the need for wired setups. | BLE device validation and certification environments — enables faster, cable-free testing procedures. |
In Bluetooth 6.2, when switching between different connection intervals, the process follows a defined handshake sequence. The slave device (Device B) initiates a connection interval change request, which is then acknowledged and confirmed by the master device (Device A). Once both sides complete this negotiation, the new connection rate takes effect seamlessly.
This mechanism ensures synchronization integrity and stability during dynamic data exchange, especially in latency-critical scenarios like real-time control or sensor data streaming.
To switch to a new connection interval, Peripheral B sends a connection rate change request that Central A must confirm through a handshake process.
The Bluetooth 6.2 standard not only boosts performance but also strengthens system-level reliability and testing flexibility. With the SIG’s consistent half-year update rhythm, the upcoming Bluetooth 6.3 specification is projected for release around May 2026.
Developers and engineers can explore deeper implementation details, such as PHY behavior and protocol-level improvements, in the official Bluetooth Core Specification documents — which also include a comprehensive overview of all new features in Bluetooth 6.2.
