蓝牙6.2 – 响应更快,增强安全性,USB 通信,以及测试。
Bluetooth 6.2 – more responsive, improves security, USB comms, and testing

原始链接: https://www.cnx-software.com/2025/11/05/bluetooth-6-2-gets-more-responsive-improves-security-usb-communication-and-testing-capabilities/

蓝牙6.2现已发布,继续遵循蓝牙SIG每半年一次的发布计划。此更新侧重于改进性能、安全性和易用性。主要增强功能包括**更短的连接间隔 (SCI)**,将延迟降低至375µs——有利于AR/VR和游戏等应用。 安全性通过**基于信道探测幅度攻击弹性**得到加强,可保护免受射频攻击,尤其是在汽车、智能家居和工业环境中。新的**批量序列化模式**简化了USB蓝牙LE音频设备的数据传输。 最后,**BLE测试模式增强**实现了无线、空中测试。这些更新旨在使蓝牙连接更快、更安全、更易于集成,预计下一规范蓝牙6.3将于2026年5月发布。

## 蓝牙 6.2 更新与音频挑战 最近的 Hacker News 讨论强调了蓝牙 6.2 的发布,带来了诸如响应速度提升、安全性增强、USB 通信支持以及更好的测试能力等改进。 然而,对话很快转向了持续存在的音频质量问题,特别是麦克风性能。用户报告称 Apple AirPods 提供最佳体验,而其他蓝牙音频设置在使用麦克风时经常表现不佳。 一位评论员详细描述了在 Windows 上使用较新的 LE Audio 标准实现高质量音频的复杂性。它需要在设备和耳机*都*具备特定的硬件(蓝牙 5.2+,支持等时音频),以及兼容的音频编解码器,这可能导致令人沮丧的设置过程。总体共识指向一个实现一致良好蓝牙音频的碎片化和混乱的局面。
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原文

Bluetooth 6.2 specification has just been released with a range of new features to enhance responsiveness with shorter connection intervals, strengthen security against amplitude-based RF attacks, and improve communication with a new “Bulk Serialization Mode” that’s especially useful for USB Bluetooth LE audio applications. The new Bluetooth Core 6.2 specification also introduces various BLE Test Mode enhancements.

If you feel like Bluetooth specifications are released more often than in the past, that’s normal because the Bluetooth SIG switched to a bi-annual release schedule. For instance, the Bluetooth 6.1 specification was just published last May, or about 6 months ago…

Bluetooth 6.2

Bluetooth 6.2 highlights:

  • Bluetooth Shorter Connection Intervals (SCI) reduce the minimum Bluetooth LE connection interval from 7.5 ms to just 375 µs for faster responsiveness. The change will especially impact high-performance HID devices, real-time human-machine interfaces (HMIs), and latency-sensitive sensors. AR/VR and gaming applications will particularly benefit from the lower latency.
  • Bluetooth Channel Sounding Amplitude-based Attack Resilience adds protections against sophisticated amplitude-based RF attacks. Devices for the automotive, smart home, and industrial markets will become less prone to relay and spoofing threats with the changes.
  • Bluetooth HCI USB LE Isochronous Support gets Bulk Serialization Mode, a new mechanism for standardizing isochronous data transmission over USB. With this update, host-controller interface (HCI) packet handling will be simplified, and it also streamlines LE Audio integration in Bluetooth USB devices.
  • Bluetooth LE Test Mode Enhancements enable a unified control protocol for performing Bluetooth LE RF PHY tests, while also supporting over-the-air (OTA) transport, so testers won’t need to rely on cables anymore.

Bluetooth 6.2 Peripheral B Central A connection rate
Handshake to switch to a different connection interval: Peripheral B requests a change to the connection rate, Central A

You’ll find more details in the core specifications page on Bluetooth.org, and a rather technical overview of the new features is also available. The Bluetooth 6.3  specification should be released sometime in May 2026 if they keep up with their bi-annual schedule.

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