Research Interests

Generally, I am interested in Internet measurement, network data visualisation, and how network performance can be made easier to understand, particularly how network performance is perceived by home users. I'm also interested in real-time applications such as conferencing and Internet video, and how their performance can be optimised for home users.

My PhD research focused on improving our understanding of residential broadband networks, and the effect of these networks on real-time services such as Internet video and IPTV. This involved measurement, analysis, and modelling of real-time traffic. Some of the data I collected is available for download.

Using this data, I have also evaluated FEC performance over residential links, and investigated models for Internet packet loss on residential networks.

I have also worked on client-side measurements of the Spotify peer-to-peer music streaming service. More information on this work can be found here.

Publications

See also my Google Scholar page.

• Jayant Gupchup, Yasaman Hosseinkashi, Pavel Dmitriev, Daniel Schneider, Ross Cutler, Andrei Jefremov, and Martin Ellis. Trustworthy Experimentation Under Telemetry Loss. In CIKM '18: Proceedings of the 27th ACM International Conference on Information and Knowledge Management, Torino, Italy, October 2018. DOI: 10.1145/3269206.3271747
• Jayant Gupchup, Ebrahim Beyrami, Martin Ellis, Yasaman Hosseinkashi, Sam Johnson, and Ross Cutler. On Design of Problem Token Questions in Quality of Experience Surveys. In QoMEX 2018: Proceedings of the 10th International Conference on Quality of Multimedia Experience, Cagliari, Italy, May 2018. DOI: 10.1109/QoMEX.2018.8463424
• Jayant Gupchup, Yasaman Hosseinkashi, Martin Ellis, Sam Johnson, and Ross Cutler. Analysis of Problem Tokens to Rank Factors Impacting Quality in VoIP Applications. In QoMEX 2017: Proceedings of the 9th International Conference on Quality of Multimedia Experience, Erfurt, Germany, May 2017. DOI: 10.1109/QoMEX.2017.7965648
• Martin Ellis, Dimitrios P. Pezaros, Theodore Kypraios, and Colin Perkins. A two-level Markov model for packet loss in UDP/IP-based real-time video applications targeting residential users. Computer Networks, Volume 70, September 2014. DOI: 10.1016/j.comnet.2014.05.013
• Varun Singh, Stephen McQuistin, Martin Ellis, and Colin Perkins. Circuit Breakers for Multimedia Congestion Control. In PV 2013: Proceedings of the 20th International Packet Video Workshop, San Jose, CA, USA, December 2013. DOI: 10.1109/PV.2013.6691439
• Martin Ellis, Dimitrios P. Pezaros, Theodore Kypraios, and Colin Perkins. Modelling Packet Loss in RTP-based Streaming Video for Residential Users. In LCN 2012: Proceedings of the 37th Annual IEEE Conference on Local Computer Networks, Clearwater, FL, USA, October 2012. DOI: 10.1109/LCN.2012.6423613
• Martin Ellis, Dimitrios P. Pezaros, and Colin Perkins. Performance Analysis of AL-FEC for RTP-based Streaming Video Traffic to Residential Users. In PV 2012: Proceedings of the 19th International Packet Video Workshop, Munich, Germany, May 2012. DOI: 10.1109/PV.2012.6229737
• Alejandra Soni García, Jörg Ott, Martin Ellis, and Colin Perkins. Virtual RTCP: A Case Study of Monitoring and Repair for UDP-based IPTV Systems. In PV 2012: Proceedings of the 19th International Packet Video Workshop, Munich, Germany, May 2012. DOI: 10.1109/PV.2012.6229743
  Alcatel-Lucent Best Student Paper Award.
• Martin Ellis, Stephen D. Strowes, and Colin Perkins. An Experimental Study of Client-Side Spotify Peering Behaviour. In LCN 2011: Proceedings of the 36th Annual IEEE Conference on Local Computer Networks, Bonn, Germany, October 2011. DOI: 10.1109/LCN.2011.6115205
• Martin Ellis, Colin Perkins, and Dimitrios P. Pezaros. End-to-End and Network-Internal Measurements of Real-Time Traffic to Residential Users. In MMSys '11: Proceedings of the 2nd Annual ACM SIGMM Conference on Multimedia Systems, San Jose, CA, USA, February 2011. DOI: 10.1145/1943552.1943567
• Martin Ellis and Colin Perkins. Packet Loss Characteristics of IPTV-like Traffic on Residential Links. In CCNC 2010: Proceedings of the 7th Annual IEEE Consumer Communications & Networking Conference, Workshop on Emerging Internet Video Technologies, Las Vegas, NV, USA, January 2010. DOI: 10.1109/CCNC.2010.5421735