One or more PhD stipends in Mesh network design for reliable communication in dynamic settings (8-18047)

At the Technical Faculty of IT and Design, Department of Electronic Systems, one or more PhD stipends are available within the general research programme Wireless Communications. The stipends are open for appointment from 1 August 2018.

Job description

A wireless mesh network (WMN) is a multi-hop network consisting of wireless nodes, which uses some kind of cooperative routing mechanism between the nodes to reach a destination.

Typically, the destination is a gateway, which connects the WMN to an outside network. As an example, in a disaster setting, a WMN can convey simple text based messages from volunteer workers in the field to a help center via a gateway, so that relief may be coordinated in an organised manner. Another example could be for interconnecting drones in an “air-borne” WMN, e.g. for cooperative UAV deployment or to complement a ground-to-drone cellular channel so that real-time command and control information is available during all critical flight phases. For such networks, reliability is an issue - in the first case on the long-term with relaxed latency, and in the second, in the short-term with stringent latency requirements. In both cases, it is important that the message will be delivered with high reliability.

Challenges that arise from such applications extend from the very dynamic nature of the networks - introduced by node mobility, and/or the nature of wireless propagation in the respective environments. In the disaster setting, the individual links are subject to high and very variable link loss, because of the impact to wireless propagation from the environment and the human body. For the “air-borne” WMN, individual links are typically much stronger, but (similarly) short-lived due to fast moving nodes and potential shadowing effects from the fuselage.

The overall research objective of the proposed PhD is to investigate the use of WMNs and dynamic routing protocols in very dynamic use-cases, initially related to disaster settings and later to the new use-cases arising with drone applications.

Some potential research questions:

  • For the disaster setting, what is the trade-off between density of nodes, ratio of links to nodes (redundancy), number of access points per gateway and the packet delivery probability?
  • Can WMNs enhance the reliability of the drone command and control link, e.g. to combat outage on the cellular drone-to-ground communication channel; improve radio mobility performance (handover), etc.?  
  • Can WMNs be used for cooperative drone deployment, e.g. sense and avoid or assistance to sense and avoid mechanisms?

The research must use realistic propagation and mobility models, and particularly for the drone context, should consider the use of multi-antenna technology for optimised cross-layer design. It is therefore required that the candidate has a good understanding on wireless communication aspects in general.

Excellent skills in oral and written English are required.

You may obtain further information from Associate Professor Troels Bundgaard Sørensen, Department of Electronic Systems, phone: 9940 8618, email: tbs@es.aau.dk  concerning the scientific aspects of the stipend.

PhD stipends are allocated to individuals who hold a Master's degree. PhD stipends are normally for a period of 3 years. It is a prerequisite for allocation of the stipend that the candidate will be enrolled as a PhD student at the Technical Doctoral School of IT adn Design in accordance with the regulations of Ministerial Order No. 1039 of August 27, 2013 on the PhD Programme at the Universities and Certain Higher Artistic Educational Institutions. According to the Ministerial Order, the progress of the PhD student shall be assessed every six months. It is a prerequisite for continuation of salary payment that the previous progress is approved at the time of the evaluation.

The qualifications of the applicant will be assessed by an assessment committee. On the basis of the recommendation of the assessment committee, the Dean of the Technical Faculty of IT and Design will make a decision for allocating the stipend.

For further information about stipends and salary as well as practical issues concerning the application procedure contact Ms. Lisbeth Diinhoff, The Technical Faculty of IT and Design, email: ld@adm.aau.dk , phone: +45 9940 9589.

For more information of The Technical Doctoral School of IT and Design: www.phd.tech.aau.dk

The application is only to be submitted online by using the "Apply online" button below.

We wish reflect the diversity of society and welcome applications from all qualified candidates regardless of personal background.

Agreement

Appointment and salary as a PhD fellow are according to the Ministry of Finance Circular of November 10, 2015 on the Collective Agreement for Academics in Denmark, Appendix 5, regarding PhD fellows, and with the Ministry of Finance current circular on the employment structure at Danish Universities.

Vacancy number

8-18047

Deadline

Sun Jun 24 00:00:00 CEST 2018

Apply online

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Online application - some good advice

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