What is UWB positioning firmware development?

UWB positioning firmware development involves creating embedded software for ultra-wideband devices that measure distance, exchange ranging information and support position estimation. Depending on the hardware and application, firmware may manage radio configuration, timestamps, ranging sessions, anchor and tag communication, synchronization, power management and communication with an RTLS or positioning application.

What is the difference between UWB ranging and UWB positioning?

UWB ranging estimates the distance between participating devices using radio measurements. UWB positioning uses ranging measurements from multiple anchors or other suitable references, together with their known locations and a positioning algorithm, to estimate a device's position. Positioning performance depends on the ranging method, anchor geometry, radio conditions, synchronization requirements and algorithm.

Can you develop UWB anchor and tag firmware?

Yes. The development scope can include anchor and tag firmware, ranging session management, timestamp processing, device communication, synchronization where required, error handling, diagnostics and power management. The implementation depends on the selected UWB chipset, reference design, supported SDK and system architecture.

Which UWB ranging methods can be implemented?

Depending on the selected UWB platform and its supported capabilities, firmware may implement or integrate supported methods such as two-way ranging and applicable time-of-flight measurement techniques. The choice depends on device roles, update rate, timing requirements, power budget, security requirements and the capabilities of the selected hardware and SDK.

What positioning accuracy can UWB firmware achieve?

Achievable positioning accuracy depends on the UWB radio and antenna design, ranging method, anchor placement, installation geometry, multipath propagation, non-line-of-sight conditions, calibration and positioning algorithm. Accuracy should be measured in the intended deployment environment rather than assumed from a chipset specification alone.

Can UWB firmware support real-time location systems?

Yes. UWB firmware can provide ranging measurements and device status to an RTLS architecture. A complete solution may also require anchor infrastructure, position estimation software, a communication gateway, backend services, dashboards and application integration. The division of processing between devices, gateways and servers depends on the system requirements.

Can UWB be integrated with Bluetooth Low Energy?

Yes. UWB and Bluetooth Low Energy can be combined when supported by the selected hardware and product architecture. BLE may support discovery, configuration, device management or application communication, while UWB can provide distance measurements for positioning or proximity-related functions. Firmware must coordinate radio activity, connection state, security and power consumption.

Can UWB firmware run on an RTOS?

UWB firmware can be integrated with a suitable real-time operating system when the target hardware, radio driver and vendor SDK support the required environment. Integration may involve threads, queues, timers, interrupts, synchronization, error recovery and application state management. The RTOS and implementation approach are selected according to the platform and timing constraints.

How do you optimize UWB firmware for battery-powered devices?

Power optimization begins by measuring current consumption across idle, ranging, communication and sleep states. Potential improvements include adjusting ranging frequency, scheduling radio activity, reducing unnecessary wake-ups, using supported sleep modes, optimizing peripheral activity and managing reconnection and error-recovery behavior. The effect of each change should be verified through current profiling and application-level battery-life testing.

Can UWB firmware support secure ranging and digital key applications?

UWB firmware can integrate supported secure-ranging and authentication mechanisms for applications such as proximity-aware access control and digital keys. The implementation must follow the selected chipset capabilities, applicable protocol specifications, security architecture and product requirements. Security testing should cover authentication, key handling, ranging configuration and relevant failure scenarios.

Can you integrate UWB firmware with existing hardware?

Existing UWB hardware can be assessed for firmware integration based on its chipset, antenna implementation, MCU, board interfaces, SDK support and current firmware architecture. The work may include driver integration, SPI communication, interrupt handling, board configuration, hardware bring-up and testing. Hardware limitations or unsupported components may require additional engineering or design changes.

How do you test and validate UWB positioning firmware?

Validation can include ranging accuracy measurements, repeated-distance tests, anchor geometry checks, line-of-sight and non-line-of-sight testing, multipath evaluation, interference and coexistence testing, synchronization checks, power profiling, stress testing, long-duration operation and regression testing. Test conditions and acceptance limits should reflect the intended deployment environment and product requirements.

Can UWB firmware be used for industrial asset tracking and healthcare equipment localization?

UWB can support indoor asset tracking and equipment localization where suitable anchors, tags, radio coverage and positioning software are deployed. Potential applications include warehouse inventory, industrial tools, shared healthcare equipment and other assets that need location information. Required accuracy, update rate, infrastructure density, battery life and privacy requirements should be defined before implementation.

What information is required to start a UWB firmware development project?

A useful starting point includes the UWB chipset and development platform, existing firmware or SDK, hardware schematics, device roles, required ranging or positioning behavior, target accuracy, update rate, deployment environment, power budget, communication interfaces and security requirements. If the hardware is not finalized, an initial feasibility assessment can help identify platform options and technical risks.

UWB Positioning Firmware Development Services | Precise Indoor Tracking Solutions

Name: UWB Positioning Firmware Development Services
Author: Ashok Patel

Ultra-wideband (UWB) technology is transforming the way connected devices detect their position. UWB is different from traditional positioning systems such as Bluetooth or Wi-Fi because it uses the time of flight of radio signals to determine the distance between devices with high accuracy.

The technology is a great candidate for various applications that include real-time location tracking, secure access to spaces, indoor navigation, safety of workers, tracking of items, smart manufacturing facilities, hospitals, storages, sports and wearables.

At Adequate Infosoft, we develop UWB positioning firmware for companies building reliable location-aware products. Our embedded engineering team works across firmware architecture, UWB ranging, anchor and tag communication, sensor fusion, mobile integration, cloud connectivity, testing and production readiness.

Whether you are validating a proof of concept or building a scalable commercial RTLS platform, we help turn UWB hardware into a dependable product.

Let's Work Together!

What Is UWB Positioning Firmware?

UWB positioning firmware is a piece of software that helps in the radio communication and determines the distance between the devices and the location by providing the information to the third systems through various means.

UWB Positioning Firmware is used in UWB technology-enabled microcontrollers and communication devices and handles the timely exchange of messages between the devices, tuning of the antenna, filtering of the measurements, and providing location data to users.

Reliable firmware must deal with real-world conditions such as mobility of the users, metal obstacles, low battery levels, and interference from other devices in the vicinity.

Unique Case Study: UWB RTLS Firmware for a Confidential European Warehouse Client

Compact ESP32 Mixed-Signal Audio Wearable

Phase 01 · Requirement

The Client Requirement

A client from Europe in logistics and manufacturing sought an indoor positioning system for enhanced visibility of high-value equipment, mobile tools, and safety-sensitive work areas.

According to scans via barcodes, the item's location is only visible to the operational team, but they desire that information to be available almost in real-time without requiring operators to scan the items every now and then.

The customer wanted a UWB tag to be powered by a battery that can be attached to reusable devices, fixed anchors that can be set up in different operational areas, as well as a control panel that can show the current position, down status, and notifications about unauthorized movements.

The set up also had to work in a metal-oriented environment with storage shelves, moving carts, and a broken line of sight.

Phase 02 · Architecture

Firmware and System Architecture

The embedded firmware created by our team is based on the use of ultra-wideband (UWB) tags, stationary anchors, and an edge gateway.

The tags used to function have a power-efficient microcontroller containing a UWB module, an accelerometer, and a battery monitoring circuit in their structure. Motion detection enables operation of the tags in the power-saving mode in case of no motion; when the movement is identified, the tag starts the ranging operation.

As for location determination, the anchors perform the timing measurements; then they send the data to the gateway through the reliable local network.

The gateway was a method of filtering measurements to eliminate incorrect readings by checking the quality of the distance and calculating the estimated position of tags based on information from different anchors.

We implemented flexible zone limits that let the system execute an action when the equipment moves to a designated area or exits a given location.

The firmware consisted of encryption for checked settings, identification of unique devices, recovery through the watchdog process, support in diagnosis, and many logs for further assistance.

The calibration program helped connection points to be assigned coordinates, antenna-delay settings adjusted, and coverage checked.

Phase 03 · Outcome

Engineering Challenges and Outcome

Reflections from metal shelving created occasional range outliers. Instead of presenting every raw measurement to the dashboard, we implemented confidence thresholds, rolling median filtering and position smoothing.

Measurements with weak quality indicators were ignored when stronger anchor readings were available.

The other key consideration was battery life. With the use of adaptive reporting, the tags transmitted less information when stationary and more frequently on the move using a combination of timely tracking and sensible maintenance intervals.

The completed solution provided the customer with a ready-to-use firmware foundation for indoor asset tracking, zoned alerts and future possibilities of moving into automated worker safety and workflow analytics systems.

This venture illustrates necessary engineering particulars for the UWB solution which includes radio timings, RF and power optimisation processes, different kinds of diagnostics, and business events.

Relevant Adequate Infosoft Experience

Our UWB work is supported by broader experience in embedded firmware, connected wearables, IoT tracking, Bluetooth Low Energy, secure access and mobile/cloud integration.

Secure Access

Smart Lock and Secure Access Platform

Adequate Infosoft has created Zafe Connect, an all-in-one smart lock system for a client in Europe. The system allowed for the integration of connected lock control, management of users, permissions for access, and mobile applications.

This is a relevant experience when it comes to UWB digital keys and access using proximity technology.

Read the case study

Child Safety

BLE Child Safety Tracking Wearable

This project is related to development of child safety device based on Nordic nRF52840 hardware & Zephyr RTOS along with custom PCB design & .NET MAUI application.

It shows that we are able to design compact, low-power connected devices & useful mobile application for families to make location & safety information useful.

Read the case study

Indoor Tracking

IoT Wearable Bracelet for Indoor Location and Wellness

Adequate Infosoft has established a concept for a wearable bracelet based on ESP32-S3 that contains elements such as attendance tracking, indoor location tracking, health data, and real-time dashboard. This information is especially important for UWB projects based on location signals and their application in practical work processes.

Read the case study

Sports · Cloud

Smart Sports Wearable and Cloud Analytics

For a smart sports platform, our team combined STM32WB55 firmware, BLE connectivity, AWS IoT, a Flutter application and analytics. The project reflects our capability to move embedded data from the device through to a scalable user-facing platform.

Read the case study

Our UWB Firmware Development Capabilities

UWB Ranging and Positioning Algorithms

We create Ultra-wideband firmware using both single-ended and double-ended two-way ranging (TWR) and time-difference-of-arrival (TDoA) topologies, which are chosen based on the time of flight metrics, battery duration, signal frequency and density of the tags.

We're capable of estimating distances, scheduling messages, using the multi-anchor trilateration method, synchronising clocks in anchors, calibrating antenna time delays, correcting for non-line-of-sight effects, scoring a communication channel, smoothing locations, dropping outliers, geo-fencing, and detecting closeness.

We tailor positioning logic to real-world applications, from warehouse zone monitoring to precise medical equipment tracking, balancing positioning accuracy, system complexity, and power consumption for reliable performance and scalable deployment.

Firmware for UWB Tags, Anchors and Gateways

Our team is engaged in creating firmware for all segments of the UWB device family, not just a wearable tag. This implies creating firmware for fixed anchors, battery-powered tags, moving beacons and bridges for communication between them.

Regarding tags, our firmware is focused on minimal energy consumption, motion-based wake-up, adjustable distance measurement, battery report, and safe firmware updates over the air.

For anchors, firmware implements continuous listening, network synchronization, system health monitoring, and communication between layers with the help of Ethernet, Wi-Fi, BLE, LTE-M, NB-IoT, and LoRaWAN.

We also build gateway firmware that collects measurements locally and forwards structured messages to cloud APIs or on-premise systems using MQTT, HTTPS, WebSockets or custom protocols.

Hardware and RF-Aware Embedded Development

UWB accuracy depends on antenna placement, PCB ground planes, enclosure materials, power noise, and calibration. Our firmware engineers collaborate with hardware and PCB specialists to identify issues early and improve ranging performance.

We provide support for appropriate UWB platforms for Qorvo, NXP, and Nordic Semiconductor. Some of the services we offer include board bring-up, SPI and interrupt driver development, sleep-mode optimisation, RF configuration, as well as production calibration tools and manufacturing-testing firmware necessary for producing reliable, accurate, and factory-ready UWB devices.

Secure UWB Access and Proximity Features

Various applications such as creating digital keys, opening smart locks, gaining access to vehicles, and handing over devices safely are using UWB technology. This technology will help to differentiate genuine proximity from the one conveyed through a signal.

We create firmware designed for the measuring distance process, for session control, for generating cryptographic keys, for performing authenticated commands, and for defining time-constrained access rules.

For connected access products, we can combine UWB with BLE, NFC, RFID, biometrics or cloud authorisation. The result is a practical user journey: discover the device through BLE, verify close physical proximity through UWB and then perform the approved action.

How We Build a Reliable UWB Product

The very first thing you need to pay attention to in order to start UWB-based projects is to determine environment type, accuracy, repeated update requirements, and the number of tags, obstacles, battery requirements, and integration scope.

Our engineers create firmware designs that are able to manage wireless channel allocation and state control, data transmission, energy consumption, storage of information, and restore function in case of malfunction.

We conduct tests under harsh conditions such as packet losses, tag movements, dead batteries, anchor on/off processes, and analyze link competence.

For the successful scaling of deployments, we deploy device provisioning, version management, remote diagnostics, and OTA updates.

Why Choose Adequate Infosoft for UWB Development?

Success of UWB projects depends upon the integration of embedded firmware, radio function patterns, hardware limitations, and product workflows.

Our team is fully capable of assisting you on every step of the way, from analyzing the feasibility of the project and developing prototype firmware to developing mobile applications, cloud dashboards, and maintaining equipment in the field.

We work transparently, define measurable acceptance criteria and test in conditions close to the final deployment environment. Clients receive maintainable source code, technical documentation, deployment guidance and engineering support appropriate to the product stage.

Frequently Asked Questions

How precise is UWB indoor positioning technology?

The accuracy of the technology depends on the characteristics of the hardware used, the environment, and the installed hardware configuration. In theory, UWB systems can offer an accuracy level of up to a few centimeters, yet the implementation still needs to be tested in a specific building in order to verify the performance and efficiency of the setup due to external factors that may impact the efficiency of the application.

Can UWB work with BLE?

Yes. BLE and UWB work well together. BLE can provide discovery, pairing, basic connectivity and low-power control, while UWB provides precise distance or positioning when required.

Are both UWB firmware and mobile applications created by you?

The answer is yes. We make custom-designed UWB firmware, Android and iOS mobile applications, web dashboards, cloud APIs, gateway services, and conduct integration with the ERP system, access-control systems, and inventory-control systems if needed.

Are battery-powered tags suitable for UWB usage?

Yes, battery life will rely on factors such as the frequency of reporting, architecture of ranging, patterns of movement, size of batteries, and firmware optimization. We adapt our design for scheduling processes and sleeping modes according to the expected maintenance cycle.

Can UWB be used for access control?

Yes. UWB can support secure proximity verification for smart locks, vehicle access, lockers, equipment handover and restricted-area access when combined with suitable authentication and authorisation controls.

What are the suggestions for preparing for UWB project?

Provide us with your use case, layout of building, accuracy required, number of devices needed, battery life target, environment, integration needs, and security requirements. We will then advise you on the best hardware and firmware architecture.

Ashok Patel

Senior Engineering Project Manager

AI/ML, DevOps, Data Science & Automation | IoT & C#/.NET | Azure & AWS Expert | Certified AI & Cloud Engineer | 1,500+ LinkedIn Followers

Facebook LinkedIn Stack Overflow nRF9151 NB-IoT / NTN Satellite Development

Leadership That Leads Worldwide

With a physical presence in over 15 countries and a global footprint spanning 25+ countries, we are ready to serve you anywhere. Location, language, or culture is never a barrier, because our global team can work with you in your language. Our strong international team ensures seamless collaboration across borders We have a strong tech team, highly recognized in their domains, with extensive technical expertise.

UWB Positioning Firmware Development Services | Precise Indoor Tracking Solutions

What Is UWB Positioning Firmware?