Master Thesis - Cell Phone Mobility and Carrier Aggregation Cell Set Selection

Linköping, SE
den 19 november 2021
den 29 december 2021
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


In a mobile communications network, the one aim is to provide connectivity for different user equipment like for example cell phones. There have been several different technologies (GSM, WCDMA, LTE…) that all provided some level of service to the users. The most recent mobile technology is NR, also sometimes called 5G. One of the main differences in NR compared to for example LTE is that NR can use much higher frequency bands for communication between the cell phone and the base station. This also leads to that carrier aggregation, where two or more frequency carriers are used to achieve higher data rates becomes increasingly important. In traffic steering one important thing is to ensure that the cell phone always is connected to the best set of cells.

Thesis Description

The thesis shall investigate and compare different methods for re-selection of carrier aggregation cell set. It could for example be to compare different triggers for when a new cell set should be considered.

The following steps are envisioned as part of the thesis work:
  • Investigate and select some promising strategies for carrier aggregation cell set re-selection.
  • Implement the selected strategies in Matlab and evaluate using output from a multi-layer simulator.
  • Document the results in a report.

The thesis will be concluded with a result presentation for the Traffic Sections within Ericsson.


This project aims at students in electrical engineering, computer science, computer engineering or similar. Background in wireless communication is preferred.

Extent 1 student, 30hp

Location Ericsson AB Mjärdevi, Linköping

Preferred Starting Date Spring 2022

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:

Please submit your application in English as soon as possible - we are working continuously with candidate selection.

For specific questions please reach out to the responsible recruiter: Sylwia Kwiecien

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

Req ID: 624162