Our faculty member M. Akif Yazıcı has completed the research project entitled "Stochastic Models for the Quality of Experience for Video Playout in Wireless Networks." The research outputs have been presented at the 26th International Conference on Analytical & Stochastic Modelling Techniques & Applications (ASMTA) conference, and published as a chapter in the Springer Lecture Notes in Computer Science, volume 13104.

DOI: https://doi.org/10.1007/978-3-030-91825-5_29

Abstract
We present an analytical framework to obtain the distribution of frozen, low quality, and high quality video in a setting with two video quality levels where the channel is dynamic and the data rate the user can achieve varies with time. The presented model, which is based on multi-regime Markov fluid queues, is also capable of producing the distribution of the excess data present in the playout buffer at the end of the video session duration, which will be wasted. The playout control is assumed to be hysteretic, and the effects of the values of thresholds selected for starting playout, switching to low/high quality levels, and pausing/resuming download on the distribution of video quality and excess data is investigated. The presented model can be extended to quality levels more than two.

Stochastic Models for the Quality

İTÜ Informatics Institute

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ITU Informatics Institute provides graduate-level education and research in applied informatics, computer sciences, computational science and engineering, communication systems under the following programs.

Faculty members and students conduct research supported by national and international organızatıons in the fields of electromagnetic fields, communication systems/regulations, computational materials design, computational chemistry/biology, cryptography, signal/data processing/visualization, big data management, climate and ocean sciences, 

  • List of Most Influential Scientists; Associate Professor. B. Uğur Töreyin (article by Dr. John PA Ioannidis, K. W. Boyack and J. Baas published in the journal PLOS Biology)
  • Beltus Nkwawir Wiysobunri, the best project award in the Science category, in the 2020 International Students Project Competition
  • Argenit company, of which Dr. Abdulkerim Çapar is among the founding partners, received the "National-International Supports" First Prize of ITU ARI Teknokent.
  • TÜBİTAK 2242 University Students Project Competition in Priority Areas: Istanbul region first place - Ahmet Burak Özyurt
  • Best Presentation Award at ICAT'18 Conference: Sena Efsun Cebeci, 2018
  • Tubitak Incentive Award; 2016 Assoc. Prof. Adem Tekin
  • “Technical Paper” and “Willis H. Carrier” Award by the American Heating, Cooling and Air Conditioning Association; 2016 Assist. Prof. Dr. H. Salih Erden
  • Science Heroes Association Young Scientist of the Year Award; 2016 Assoc. B. Uğur Töreyin Best Poster Award at PRACEdays 2016 conference; Samet Demir
  • ITU Most Successful Thesis Award; 2016 Hatice Gokcan

There is also a High Performance Computing Laboratory established with the support of the State Planning Organization within the Institute.