Phdstudy of Quality of Experience in Relation to

Your role is to study of quality of experience in relation to the quality of home Wi-Fi networks. With the deployment of FTTH (XGS-PON deployed in France), Orange Livebox7 provides residential offers up to 8 Gbps (downstream). Wi-Fi is now becoming the critical link for network quality. With more than 80% of terminals connected via Wi-Fi in home networks, the quality of Wi-Fi experience becomes essential for the satisfaction of residential customers. Today, many Wi-Fi indicators are collected for the analysis of Quality of Service (QoS) in networks, but very few exist to indicate the Quality of Experience (QoE) perceived by customers. This PhD focuses on two axes: - Study QoE models for new services that are sensitive to latency and jitter. - Analyze the impact of QoE based on Wi-Fi conditions and correlate the QoE score with physical Wi-Fi parameters to finally improve it. **Scientific objectives**: The objective of the thesis is to develop QoE prediction models based either on a Mean Opinion Score (MOS) or more simply on some indicator thresholds in domestic local networks. These models will allow us to build a QoE score from the low-level network parameters (i.e. Wi-Fi) that operator can easily collect. With the help of the predicted QoE, we plan to diagnose and improve pain situations among residential customers. In addition, having a vision of the QoE according to service also allows us to know if it is possible to reduce energy consumption (power reduction, band extinction, etc.) without degrading the perceived quality. T **he obstacles to be lifted**: - Define and train a QoE model (i.e. MOS score). - Master data processing, analyze the collected data and study the correlation between the QoE score and Wi-Fi parameters if exists. - Develop algorithms to improve the quality of experience with home Wi-Fi. **Expected results**: - Setting up the test bed in the laboratory. - Contribution to intellectual property and international scientific publication. - Contribution to standardization (ITU-T, ETSI, IEEE, etc.) - Transfer of know-how (databases, algorithms and scripts) for Orange Innovation “Service à la maison”. **about you**: **Skills** Python, automation, data processing and visualization, machine learning. Good synthesis and writing skills in French and English. Curious, rigorous, good at teamwork. **Required education level** Engineer or Master (bac+5) in the field of networking and IT. **Desired experiences** Internship in Wi-Fi networks would be appreciated. **additional information**: Opportunity to work for technical challenges identified by Orange, targeted at residential customers and innovated technologies (FTTH, Wi-Fi, smart home, PRPL). References: [1] ITU-T, T-REC P.1203 P1023.1 P1023.2 P1023.3 P1204 [2] D. da Hora, K. van Doorselaer, K. van Oost and R. Teixeira, "Predicting the effect of home Wi-Fi quality on QoE," IEEE INFOCOM 2018 - IEEE Conference on Computer Communications, Honolulu, HI, USA, 2018, pp. 944-952, doi: 10.1109/INFOCOM.2018.8486335. [3] J. B. Husić, A. Alić, S. Baraković and M. Mrkaja, "QoE Prediction of WebRTC Video Calls Using Google Chrome Statistics," 2021 20th International Symposium INFOTEH-JAHORINA (INFOTEH), East Sarajevo, Bosnia and Herzegovina, 2021, pp. 1-6, doi: 10.1109/INFOTEH51037.2021.9400661 [4] A. Seufert, F. Wamser, D. Yarish, H. Macdonald, et T. Hoßfeld, « QoE Models in the Wild: Comparing Video QoE Models Using a Crowdsourced Data Set », in 2021 13th International Conference on Quality of Multimedia Experience (QoMEX), juin 2021, p. 55‑60. doi: 10.1109/QoMEX51781.2021.9465422. [5] ETSI-F5G, gs_F5G015v010101p **department**: Orange Innovation brings together the research and innovation activities and expertise of the Group's entities and countries. We work every day to ensure that Orange is recognized as an innovative operator by its customers and we create value for the Group and the Brand in each of our projects. With 720 researchers, thousands of marketers, developers, designers and data analysts, it is the expertise of our 6,000 employees that fuels this ambition every day. Orange Innovation anticipates technological breakthroughs and supports the Group's countries and entities in making the best technological choices to meet the needs of our consumer and business customers. In Orange Innovation, you will integrate into a research team at the forefront of innovation and expertise on the architectures and network functions of Home Gateways (i.e Livebox in France) and the Home Network, Wi-Fi connectivity solutions for residential customers, and intelligent diagnostic solutions for FTTH and Home network. **contract**: Thesis