The Bluetooth Special Interest Group (SIG), the trade association that oversees Bluetooth technology, has announced the adoption of Bluetooth High Data Throughput (HDT). The technology introduces faster data transfer, increased capacity, better energy efficiency and enhanced reliability for Bluetooth devices.
Bluetooth HDT introduces a new physical layer (PHY) with robust modulation schemes that allow Bluetooth Low Energy (LE) devices to communicate more efficiently and carry more information over a Bluetooth connection. It increases the maximum supported bit rate to 7.5Mbps, nearly four times that of the Bluetooth LE 2M PHY.
Bluetooth HDT improvements
Bluetooth HDT improves wireless performance across four areas:
- Faster data transfer: It delivers nearly four times the previous maximum Bluetooth throughput, allowing devices to transfer more information in the same amount of time. This supports more responsive wireless interactions, shorter transfer times, faster synchronisation and file transfers.
- Increased capacity: Improved spectral efficiency allows devices to exchange more data within available wireless resources, supporting increasingly sophisticated and data-intensive applications.
- Better energy efficiency: Moving more data in less time allows the radio to spend less time actively transmitting and more time in lower-power states, helping devices use energy more efficiently.
- Enhanced reliability: Improvements in communication robustness and resilience help devices maintain more consistent wireless performance across a broader range of applications and operating environments.
Applications and availability
Expected to be released in 2027, the first flagship application for Bluetooth HDT will be standardised premium wireless audio. The technology provides the capacity, efficiency and wireless performance required for standardised lossless and high-resolution audio, while supporting multi-channel surround sound, spatial audio and other Bluetooth audio experiences.
Beyond audio, Bluetooth HDT could support several other areas:
- Immersive and spatial computing: Extended reality (XR), spatial computing and other immersive applications could benefit from more responsive experiences and increasingly complex device interactions.
- AI-enabled devices: As more data is generated, processed and exchanged at the edge, Bluetooth HDT provides a foundation for increasingly intelligent, context-aware and adaptive AI-enabled experiences.
- Commercial and industrial solutions: The increased capacity and reliability could support wireless communication, automation, monitoring and operational systems across commercial and industrial environments.
- Everyday connected devices: Wearables, health and fitness devices, smart home products, peripherals and other connected products could complete common data exchanges faster, reducing wait times and transfer delays. Billions of products already rely on Bluetooth technology for everyday wireless connections.
Bluetooth High Data Throughput (HDT) is an optional feature in the recently adopted Bluetooth Core 7.0 specification.
Commenting on the announcement, Neville Meijers, CEO of the Bluetooth SIG, said,
As the world’s most widely used wireless standard, Bluetooth technology has continually evolved to meet the growing demands of an increasingly connected world. The Bluetooth SIG member community has once again risen to the challenge. Bluetooth HDT brings a new level of performance to Bluetooth technology, expanding the role it can play across consumer, commercial, and industrial markets and creating a powerful foundation for the next generation of wireless innovation.