Elif Uysal
Principal Investigator, Communication Networks Research Group
Room No
Tel No
+90 (312) 210-2318

News & Announcements

Students accepted into our M.S. program in Communications or Computer areaswho are highly motivated to do a competitive, highly cited thesis in a theoretical or applied area of networking are welcome to contact Prof. Uysal. 

NEW Postdoctoral Associate and PhD Openings: Please see

Prof. Uysal's research is currently funded by TUBITAK under the 2247-B Pioneer Researcher Support program. Several members of the research group are supported by the "5G and Beyond Joint Graduate Support Programme" coordinated by the Information and Communication Technologies Authority. We currently have research openings, to which highly motivated researchers are encouraged to send a resume.

The current focus of our research is Semantic-Aware communication and Data Freshness in next generation networks, with applications to IoT, NTN/Satellite IoT, and the evolution of 6G. A short video description (in Turkish) is here:

Current Synergistic Activities: Prof. Uysal is currently serving as

  • Associate editor, IEEE/ACM Transactions on Networking.
  • Associate editor, IEEE Transactions on Information Theory (starting July 2022).
  • Member, 6G Platform.
  • Assistant Director, YTM-MATPUM 
  • Chair, ODTU Parlar Foundation
  • Member of Advisory Board, IEEE ComSoc Turkey Branch.
  • Member, IEEE Turkey Awards Committee


Ph. D: Stanford University; S.M.: Massachusetts Institute of Technology; B.Sc, METU

Research Interests

  • Information Freshness and Semantic Communications in Networked Systems, in particular:
    • Link and transport layer scheduling with respect to data freshness measures, e.g. AoI, QAoI
    • Age-aware random access with applications to LoRaWAN and Satellite IoT
    • Joint channel encoding and queue management for real time/massive machine type communications in 5G and 6G
  • Energy efficient/enegy-neutral communication
    • Optimal resource allocation in energy harvesting communication systems
    • Implementation of energy harvesting communication systems


Recent papers: 

  • T. Bacinoglu, O. Kaya and E. Uysal-Biyikoglu, "Energy Efficient Transmission Scheduling for Channel-adaptive Wireless Energy Transfer", IEEE WCNC, April 2018.

  • Yin Sun, Elif Uysal-Biyikoglu, and Sastry Kompella, ``Age-Optimal Updates of Multiple Information Flows”, 1st Workshop on the Age of Information (AoI Workshop), Honolulu, HI, April 2018. [Technical Report]

  • Yin Sun, Elif Uysal-Biyikoglu, Roy Yates, C. Emre Koksal, and Ness Shroff, "Update or Wait: How to Keep Your Data Fresh," in IEEE Transactions on  Information Theory, vol. 63, no.11, 2017. pp: 7492 - 7508.

  • T. Bacinoglu, E. Uysal-Biyikoglu , C. E. Koksal,  “Finite Horizon Energy-Efficient Scheduling with Energy Harvesting Transmitters over Fading Channels”, IEEE Transactions on Wireless Communication”, Vol. 16, no. 9, pp: 6105 –6118, 2017.

  • T. Bacinoglu and E. Uysal-Biyikoglu, "Scheduling Status Updates to Minimize Age of Information with an Energy Harvesting Sensor", IEEE International Symposium on Information Theory (ISIT), Aachen, Germany, June 27, 2017.

  • Yin Sun, Yury Polyanskiy, and Elif  Uysal-Biyikoglu, "Remote Estimation of the Wiener Process over a Channel with Random Delay", IEEE International Symposium on Information Theory (ISIT), Aachen, Germany, June 27, 2017.

Patents/patent applications:
  • A Akman, F Ozelik, E Uysal-Biyikoglu, C Kement, "Energy Harvesting Communication System", Patent Registration no. 2013 01138 (Turkey), May 21, 2015.
  • O. Yavaşcan, M. Ahmetoğlu, E. Uysal, "Çoklu Mini Dilimli Eşikli ALOHA" (Multiple Mini Slotted Threshold ALOHA - MuMISTA), (application no 2021/013006) 2022.
  • S. Baghaee, M. S. Herfeh, T. Bacinoglu, E. Uysal, "A3L-FEC: Age Aware Application Layer Forward Error Correction communication protocol", July 2022.

Selected invited presentations:

  • The Role of Information Freshness in Next Generation Communication Systems, Invited Talk, Sabanci University, Sept. 29, 2022. 

  • Query Age of Information: An Operational Metric for Semantic Communication, Huawei – IEEE ITSoc Hong Kong Joint Workshop on Semantic Information Theory, May 25, 2022:  Slides  Talk video:…

  • Age-aware Random Access, Bilkent University, December 25, 2021.

  • "Optimizing Peak Age of Information and Delay Violation Probability in the Finite Blocklength Regime", Information Theory and Applications Workshop, University of California San Diego, February 12, 2019.

  • "Age-optimal Threshold Policies for an Energy Harvesting Sensor", SPAWC 2018 Invited Session on Age of Information (19th IEEE Int. Workshop on Signal Processing Advances in Wireless Communications), Kalamata, Greece, 25-28 June, 2018.

  • "Scheduling Status Updates from a Sensor to Minimize the Age of Information at the Destination", presented at the Foundations of Wireless Networking Workshop at Schloss Dagstuhl, Wadern, Germany, July 3, 2017.
  • Age-Optimal Status Updating with an Energy Harvesting Sender, Information Theory and Applications Workshop, University of California San Diego, February 13, 2017.
  • “Lazy Schedules for Freshest Data and Optimal Use of Renewable Energy in Networks”,  Micro and Nano Technology Lab, University of Illinois Urbana Champaign, Sept 30, 2016.
  • "Energy Harvesting Networks”, Northeastern University, Boston, April 23, 2016.
  • AGELESS: Scheduling Policies with Age as Objective”, ITA 2016, Information Theory and Applications Workshop, University of California San Diego, February 5, 2016.
  • “Age_of information: controlling the freshness of status updates under energy constraints”, Keynote, The Gelenbe Symposium, Imperial College, London. September 21, 2015.
  • “When to Update Data”, LIDS, MIT, October 2015.

Awards & Grants

  • IEEE Fellow, 2022
  • Young Scientist Prize Scholarship, The Science Academy (Turkey), 2014-2016
  • IBM Faculty Award, 2011
  • TUBITAK Kariyer Research Grant (2007-2009.)
  • NSF Foundations of Communication Research Grant (2006-2009.)
  • Runner up for best paper, INFOCOM 2001.
  • First place in the EE Ph.D. Quals at Stanford University, among 144 candidates (1999.)
  • Stanford Graduate Fellow (1999-2003.)
  • MIT Vinton Hayes Fellow (1997-1998.)
  • NATO Science Fellow (1997, scholarship not used)
  • Ranked 1 in the graduating class of 1997 of the Middle East Technical University
  • Bulent Kerim Altay Prize, awarded 6 times by METU EE Dept. (1994-1997.)
  • First place in the nationwide University Entrance Examination (OYS) in Turkey, among 750,000 entrants (1993.)

Courses / Laboratories


EE306: Statistical Signal Processing

Open CourseWare content (including lecture videos and handouts):

You can find EE306 lectures recorded in Spring 2022 on YouTube

EE532: Communication Network Analysis: This is a course that teaches the theoretical underpinnings of the design of communication networks and networking algorithms. Topics include Resource Allocation, Switch Scheduling, Scheduling in Wireless Networks, and Routing. EE532 is one of the required courses of the Communications area M.S. program, alternatively with EE536. A selection of the lectures are available on YouTube. EE531 or equivalent knowledge of discrete stochastic processes is strongly recommended.

ONLINE COURSES: (Open Courseware)

EE230: Probability and Random Variables: An introductory course on probability. Lecture videos recorded live at METU are available on YouTube. Lecture notes available here.

E435: Communications I.  

EE531: Probability and Stochastic Processes: A graduate course on probability with emphasis on Discrete Stochastic Processes. Lecture videos recorded by METU GISAM are available on Open Courseware

EE590: Seminar. This is for our master's students to polish their presentation skills.

EE690: Graduate Seminars. The seminars are broadcast on YouTube. For the seminar program see


Elif Uysal is a Professor in the Department of Electrical and Electronics Engineering at the Middle East Technical University (METU), in Ankara, Turkey. She received the Ph.D. degree in EE from Stanford University in 2003, the S.M. degree in EECS from the Massachusetts Institute of Technology (MIT) in 1999 and the B.S. degree from METU in 1997. From 2003-05 she was a lecturer at MIT, and from 2005-06 she was an Assistant Professor at the Ohio State University (OSU). Since 2006, she has been with METU, and held visiting positions at OSU and MIT during 2014-2016. Her research interests are at the junction of communication and networking theories, with particular application to energy-efficient wireless networking. Dr. Uysal is a Fellow of IEEE, a recipient of the BIDEB 2247-B National Pioneer Researcher Grant, 2014 Young Scientist Award from the Science Academy of Turkey, an IBM Faculty Award (2010), the Turkish National Science Foundation Career Award (2006), an NSF Foundations on Communication research grant (2006-2010), the MIT Vinton Hayes Fellowship, and the Stanford Graduate Fellowship. She is an editor for the IEEE/ACM Transactions on Networking, and served as associate editor for the IEEE Transactions on Wireless Communication (2014-2018). 

Past activities: Prof. Uysal served as Co-chair, IEEE ICC 2022 Communication Theory Symposium, TPC Co-Chair, IEEE SIU 2021 and IEEE SIU 2022, on on the TPCs of IEEE MobiHoc 2017, IEEE ICC (International Conference on Communications) 2017, IEEE Globecom 2017. The First Workshop on the Age of Information (in conjunction with IEEE INFOCOM 2018), IEEE INFOCOM 2018, IEEE WiOpt 2018. She was track 3 co-chair for IEEE PIMRC 2019, general co-chair of the 2021 AoI Workshop (in conjunction with IEEE INFOCOM 2021), TPC co-chair of IEEE SIU 2021 and IEEE 2022, TPC co-chair of WiOpt 2021, TPC member, IEEE ISIT 2021, ISIT 2022.