Master's Thesis: Energy Neutral UE

Stockholm, SE
den 13 oktober 2021
den 21 november 2021
Övriga jobb
As the tech firm that created the mobile world, and with more than 54,000 patents to our name, we've made it our business to make a mark. When joining our team at Ericsson you are empowered to learn, lead and perform at your best, shaping the future of technology. This is a place where you're welcomed as your own perfectly unique self, and celebrated for the skills, talent, and perspective you bring to the team. Are you in?

Come, and be where it begins.

Our Exciting Opportunity

Software Tech Realization unit is working with hardware and software integration of next generation radio access network (RAN) technology prototypes. We work closely with Standards and Technology programs within Development Unit Networks, and with Ericsson Research. In our unit you will gain insights to new technologies, engage in an innovative culture, and be exposed to a wide range of exciting engineering challenges!

Sustainability is a focus area for Ericsson, where radio access networks evolution is driving towards ever more energy efficient communication to save power and reduce carbon footprint. In such networks it is plausible that simple connected devices be able to harvest enough energy from its environment to sustain wireless communication without the need for a battery!

We plan to build a working solution to demonstrate such capabilities and study the feasibility in terms of data rate, communication protocols, sensor technology, coverage, and operating conditions. This demonstrator will harvest vibration energy and use a small sensor platform wireless device.

The master thesis will focus on developing a complete energy neutral system with three main components; a vibration energy harvester, a battery or super capacitor, and a sensor device with wireless communication capabilities. The electrical interfaces between the components must be defined and fully integrated, and the sensor device needs to be programmed to gather sensor data and transmit the data over a wireless connection. In addition, power consumption will need to be measured and analyzed in combination with simulations and theory to settle boundary conditions for possible use cases and pave the way for future research.

You will

  • Measure the power characteristics of the energy harvester
  • Configure a battery or super capacitor charger
  • Develop a power supply interface for the sensor device
  • Integrate the energy harvester, charger, and sensor device
  • Program the sensor device to gather and transmit data to a web server over Bluetooth, NB-IoT, or LTE-M
  • Visualize the sensor data on the server side
  • Resolve and present the feasibility for an energy neutral device based on empirical studies and theoretical models

Are you up for the challenge?


We are hiring two master thesis students who study Electrical Engineering, Computer Science, Telecommunications, Wireless Communications, Information and Communication Technology, or similar. On an equal opportunity basis, we are interested in students who have good experience and understanding of analog and digital electronics, preferably with battery or super capacitor knowledge, analog circuit simulation, and PCB design. We are also looking for students with good experience of programming embedded real time systems, especially in C language with ARM processors and Zephyr real time operating system. Understanding of power optimization techniques, client-server web services, and wireless communication protocols is a strong bonus. Proficiency in English, written and oral, is required.

What´s in it for you?

Here at Ericsson, our culture is built on over a century of courageous decisions. With us, you will no longer be dreaming of what the future holds - you will be redefining it. You won't develop for the status quo, but will build what replaces it. Joining us is a way to move your career in any direction you want; with hundreds of career opportunities in locations all over the world, in a place where co-creation and collaboration are embedded into the walls. You will find yourself in a speak-up environment where empathy and humanness serve as cornerstones for how we work, and where work-life balance is a priority. Welcome to an inclusive, global company where your opportunity to make an impact is endless.

What happens once you apply?

To prepare yourself for next steps, please explore here:

Applications should include CV, a list of completed university courses and grades (transcripts) and a brief personal letter with a motivation to why you apply for this specific Master Thesis. Meaningful experience is highly valued so please describe accomplished projects and your role in the respective project that you consider relevant for this position. Candidates are encouraged to send in their application as soon as possible. Suitable applicants will be interviewed as applications are received. Kindly note that we cannot process applications sent via email.

Recruiter: Sara Wendel (

This position reports to: Manager Realization, BNEW DNEW ST SWT SW Tech Realization

Location for this role: Stockholm, Sweden

Last day to apply: November 14th, 2021

Preferred start: January 2022

This master thesis requires you to be on-site at Ericsson's headquarters in Kista.

Ericsson provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, sex, sexual orientation, marital status, pregnancy, parental status, national origin, ethnic background, age, disability, political opinion, social status, veteran status, union membership or genetics.

Ericsson complies with applicable country, state and all local laws governing nondiscrimination in employment in every location across the world in which the company has facilities. In addition, Ericsson supports the UN Guiding Principles for Business and Human Rights and the United Nations Global Compact.

This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation, training and development.

Ericsson expressly prohibits any form of workplace harassment based on race, color, religion, sex, sexual orientation, marital status, pregnancy, parental status, national origin, ethnic background, age, disability, political opinion, social status, veteran status, union membership or genetic information.

Primary country and city: Sweden (SE) || || Stockholm || [[mfield2]]

Req ID: 613003

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