Postdoc Job in Non-Terrestrial Networks for 5G Advanced and 6G at the Technical Faculty of IT and Design, Department of Electronic Systems, Aalborg University, Denmark 2022
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No. of Positions: 1
Research Field: Communications Engineering, Information technology
Deadline to Apply: Expired
Joining Date: Apr 15, 2022
Contract Period: 24 months
Salary: According to standard norms
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Appointment as Postdoc presupposes scientific qualifications at PhD–level or similar scientific qualifications. The research potential of each applicant will be emphasized in the overall assessment. Appointment as a Postdoc cannot exceed a period of four years in total at Aalborg University.
The ever-increasing demand for new services, and the exponential growth of smart devices drive the development of 5G New Radio Non-Terrestrial Networks (NTNs) as a powerful solution to complement terrestrial networks in providing 5G New Radio cellular services over uncovered or under-served geographical areas. An NTN is a network where spaceborne (i.e., GEO, MEO, LEO) or airborne (i.e., UAS and HAPS) vehicles act either as a repeater node or as a base station, thus distinguishing transparent- and regenerative- satellite architectures. The benefit of NTNs is the capability to offer extreme wide area coverage by providing connectivity over areas that are expensive or difficult to cover with terrestrial networks (i.e., rural and mountain areas, on-board vessels/ships, on-board airplanes). Thus NTN can help satisfying all user requests and providing the desired Quality of Service (QoS) anytime and anywhere, even when traveling on ocean cruises, high-speed trains, and airplanes. Besides delivering service where it is economically challenging to provide coverage with the typical terrestrial networks, NTN ensures connectivity of Internet of Thing (IoT) devices.
The 3GPP has completed a Study Item on NTN in Release 16, started a work item (WI) in Release 17 and will proceed the work for 5G New Radio in Release 18. It covers geostationary (GEO) and low-earth orbit (LEO) among others. The biggest challenge with GEO satellites is the distance from Earth (approx. 36000 km) leading to large delays and a poor link budget, resulting in low achievable throughputs, especially in the uplink. This challenge decreases with LEO satellites, which are significantly closer to Earth, but they come with another challenge as LEO satellites are moving fast relative to Earth (7.5 km/s). This entails the coverage on Earth is changing at high rate with the movement of the satellite/station. This means that UEs on earth will experience very frequent mobility events in both active (handovers) and inactive (cell reselections) mode. This leads to a number of challenges ranging from connection connectivity to UE power consumption issues due to continuous measurements and reading of cell specific system information.
This postdoc project focuses on the development, design, and evaluation of mobility solutions for NTN systems, considering UE power consumption, connection connectivity and Quality of Service. It considers different NTN scenarios, like discontinuous and continuous coverage with Earth fixed and Earth moving cells from LEO satellites. It will explore potential benefits of the use of GEO and LEO simultaneously. The postdoc is expected to collaborate with other researchers and is part of a strong industrial collaboration between Aalborg University and the local Nokia research department. The postdoc will besides developing new concepts also investigate their performance through system level simulations, where the system level simulator is provided by Nokia. The postdoc is expected to be located a large part of the time in the Nokia Aalborg office.
Research will be primarily conceptual and analytical, while for the performance evaluation modelling and system level simulations will be required. Active dissemination of the research findings via international conferences and high-quality journals is expected.
The ideal candidate for the position is expected to hold expertise in (at least) one or several of the following topics: satellite communications, cellular communications, mobility solutions, system modeling and programming skills. Proficiency level of written and spoken English is required.
How to Apply?
Application Method: Online Application
Ref. No.: 2022-224-04476
The application must contain the following:
- A motivated text wherein the reasons for applying, qualifications in relation to the position, and intentions and visions for the position are stated.
- A current curriculum vitae.
- Copies of relevant diplomas (Master of Science and PhD). On request you could be asked for an official English translation.
- Scientific qualifications. A complete list of publications must be attached with an indication of the works the applicant wishes to be considered. You may attach up to 5 publications.
- Dissemination qualifications, including participation on committees or boards, participation in organisations and the like.
- Additional qualifications in relation to the position. References/recommendations.
- Personal data.
About the Department/Section/Group
In electronics engineering, Aalborg University is known worldwide for its high academic quality and the societal relevance of its research programmes. The Department of Electronic Systems consists of more than 200 employees, of which about 40% are international and about 90 are enrolled PhD students. The Department hosts 620 students. The Department's excellent research infrastructures and facilities accentuate its global position in teaching and research. The Department's research centres around communication, antennas, control systems, AI, sound, cybersecurity and robotics. The Department plays an active role in translating discoveries and results into practical applications with industrial partners and IPR. The Department provides teaching for several BSc and MSc programmes using a problem- and project-based learning model.
Note or Other details
Shortlisting will be applied. After the review of any objections regarding the assessment committee, the head of department, with assistance from the chair of the assessment committee, selects the candidates to be assessed. All applicants will be informed as to whether they will advance to assessment or not.
AAU wishes to reflect the diversity of society and welcomes applications from all qualified candidates regardless of personal background or belief.
Information regarding guidelines, ministerial circular in force and procedures can be seen here
Employment is in accordance with the Ministerial Order on the Appointment of Academic Staff at Universities (the Appointment Order) and the Ministry of Finance's current Job Structure for Academic Staff at Universities. Employment and salary are in accordance with the collective agreement for state-employed academics.
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You may obtain further professional information from Professor Preben Mogensen, email: [email protected].
For further information concerning the application procedure please contact Gritt Larsen by mail [email protected] or phone (+45) 9940 3892.
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