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References | Domain | Application considered | Challenges | Research opportunity |
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[30] | QoE management | Multimedia services | Subjective measurement of QoE, management (QoS) and real-time QoE, diversity of users and devices, and environmental factors | SDN, NVF, ML, mega data |
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[20] | QoE assessment | Multimedia services | Data collection and processing and the complexity of ML techniques | Data-driven approaches |
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[34] | QoE estimation | Streaming video, voice-over IP, and online gaming | Commonly used parameters are MOS and OS (opinion score), but the challenge is the need for accurate reference data and model parameters | N/A |
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ā | Modeling, measurement, and prediction | Multimedia services | Various factors (QoS) (UX), environmental factors, and user characteristics | The use of ML, hybrid models, and new approaches to measuring QoE |
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[10] | QoE management | N/A | Bandwidth management, quality of service (QoS) management, and network resource management | ā |
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[9] | QoE management | Streaming video services | Lack of large-scale datasets and benchmarks | Using ML for QoE management |
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[33] | QoE management | Network services, streaming | Bandwidth management, quality of service (QoS) management, and network resource management | Modeling technique and prediction |
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[35] | QoE measurement | Multimedia communication | Measure and optimize QoE in wireless communications | QoE management in wireless networks |
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[36] | QOE measurement | Multimedia | Data collection, modeling, and prediction, design of a complete, efficient, reliable, and accurate open big data analysis and processing prototype system | N/A |
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[37] | QoE monitoring | ISP | Optimization of user QoE | N/A |
Encryption and privacy aspects |
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[19] | Load balancing | N/A | The growth of big data implementation of millimeter wave (mm-wave) security and privacy | SDN/network functions virtualization (NVF) deep learning transfer learning (tl) |
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[11] | QoE prediction | N/A | Domination of ML over DL | N/A |
Adaptive deep learning for enhanced video delivery |
Computational cost and interoperability |
Self-healing networks and failure recovery |
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[21] | QoE management | Multimedia | (1) Which key quality parameters to optimize and control? (2) Where to control (e.g., client side, server side, and network side)? (3) When to perform QoE optimization and control (e.g., during service, i.e., online or offline control)? (4) How often to monitor and optimize QoE? | N/A |
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