Bluetooth™ channel sounding (Bluetooth® Channel Sounding） provides strong support for numerous use cases that rely on high-precision and secure device positioning. Whether it is personal item tracking, digital keys, or various scenarios that benefit from accurately obtaining the distance between two different Bluetooth™ devices, this technology makes it possible. Given the vast Bluetooth device ecosystem and the potential for almost all Bluetooth™ devices to become precise locators in the “Find My” network, these improvements will significantly accelerate connected devices in the coming years, achieving true distance awareness.
Bluetooth Channel Sounding8 Major Advantages
1.High Precision Ranging: Bluetooth™ channel sounding employs multi-channel, phase-based ranging (Phase-Based Ranging, PBR) technology to achieve high-precision ranging between Bluetooth™ connected devices.
2.High Security: The combination of PBR and round-trip time (RTT) in Bluetooth™ channel sounding ensures that vehicle and building door locks only unlock when the authorized digital key or key fob is within a certain distance, greatly reducing the risk of man-in-the-middle attacks.
3.Widespread Adoption in Tracking Devices: Bluetooth™ Low Energy is ubiquitous in consumer platform devices such as smartphones, personal computers, tablets, and wearables, establishing a foundation for installation.
4.Large Bluetooth Device Ecosystem: It is expected that by 2029, nearly 8 billion Bluetooth™ devices will be shipped, meaning a large number of devices are expected to integrate Bluetooth™ channel sounding.
5.Reduced Cost and Complexity: Implementing Bluetooth™ channel sounding does not require integrating additional ultra-wideband radio modules into devices, keeping the bill of materials (BOM) cost low while adding secure ranging capabilities.
6.Interoperability: As part of the Bluetooth™ ecosystem, all devices will achieve full interoperability.
7.Lower Power Consumption: Bluetooth™ channel sounding leverages the inherent low-power characteristics of Bluetooth™ Low Energy technology.
8.Reliability: The Bluetooth™ channel sounding solution utilizing multiple antennas helps mitigate the impact of multipath reflections on accuracy, enhancing the reliability of distance awareness in various environments.
Read the Bluetooth Special Interest Group blog for more information: A Comprehensive Analysis of the Advantages of Bluetooth™ Channel Sounding!
New Dual-Antenna Channel Sounding Development Kit Enhances Positioning Accuracy
To help developers accelerate the realization of sub-meter accuracy compliant with Bluetooth channel sounding specifications, Silicon Labs has launched a new dual-antenna development kit – BRD2606. It is a highly versatile Bluetooth channel sounding evaluation platform with the following key features:
- Best practices supported by dual-antenna, following all published guidelines.
- Can optionally operate powered by button batteries.
- Compact form factor suitable for prototyping and easy placement in space-constrained environments.
- Onboard debugging and terminal output capabilities provided through onboard circuitry.
When these development board features are combined with Silicon Labs’ protocol stack that complies with the alliance standards and supports Bluetooth 6.0 channel sounding functionality, along with production-quality initiator and reflector example applications, such as highly configurable performance features like antenna enablement, and the Bluetooth channel sounding analyzer GUI of Simplicity Studio, developers have a powerful and reliable platform for extensive distance awareness application evaluation.
Silicon Labs has designed the BRD2606 development board in a key fob-like form factor, which is also suitable for asset tracking applications. For any system with low-power Bluetooth capabilities that can benefit from some form of positioning awareness, Bluetooth channel sounding is an attractive value-added feature. This compact development board will help developers explore innovative applications of channel sounding, further expanding the use cases of Bluetooth technology.
Read the full blog post:https://cn.silabs.com/blog/improving-accuracy-with-a-new-channel-sounding-dev-kit
Learn more about how Bluetooth™ channel sounding solutions will shape the future of device positioning:https://cn.silabs.com/wireless/bluetooth/channel-sounding
Scan the QR code below to follow Silicon Labs’ social media platforms
