Starting March 27, 2025, we recommend using android-latest-release instead of aosp-main to build and contribute to AOSP. For more information, see Changes to AOSP.
UWB
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The ultra-wideband (UWB) module, introduced in Android 13, contains a UWB stack
above the HAL interface, which is based on the FiRa specification.
The UWB module provides the following benefits for device manufacturers:
- A complete Android native UWB stack available for UWB capable devices
- Improved quality and interoperability of UWB across the Android ecosystem
- Faster and more flexible support for new FiRa use cases and
specification updates
Details
The following are details of the UWB module:
- Includes a complete UWB stack in AOSP in Android 13 that uses the UCI
specification defined by FiRa as the HAL interface.
- Allows system apps to provision custom profiles.
- Includes a system API surface to allows system apps to use custom
profiles in their ranging sessions.
- Includes infrastructure to expose RROs that can be used by device
manufacturers to customize the behavior of the stack.
UWB stack architecture
The UWB stack consists of the UWB mainline module and the HAL implementation
provided by a UWB chip vendor.
Figure 1. UWB stack architecture
Module boundary
The module code is in the following locations:
The UWB module (com.google.android.uwb) uses the
APEX format.
Dependencies
The UWB mainline module depends on the following:
- HAL implementation from a UWB chip vendor.
- Bluetooth stack for all OOB interactions.
- Secure element for all secure service interactions.
- Core framework for UWB runtime permission enforcement.
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Last updated 2025-06-12 UTC.
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