S. Chen, F. Qin, B. Hu, X. Li, and Z. Chen, User-centric ultra-dense networks for 5G: challenges, methodologies, and directions, IEEE Wireless Communications, vol.23, issue.2, pp.78-85, 2016.
DOI : 10.1109/MWC.2016.7462488

M. Peng, Y. Sun, X. Li, Z. Mao, and C. Wang, Recent Advances in Cloud Radio Access Networks: System Architectures, Key Techniques, and Open Issues, IEEE Communications Surveys & Tutorials, vol.18, issue.3, pp.2282-2308, 2016.
DOI : 10.1109/COMST.2016.2548658

B. B. Nagaraja and K. G. Nagananda, Caching with unknown popularity profiles in small cell networks, Proc. of IEEE Global Communications Conference (GLOBECOM), 2015.

M. Chen, W. Saad, C. Yin, and M. Debbah, Echo State Networks for Proactive Caching in Cloud-Based Radio Access Networks With Mobile Users, IEEE Transactions on Wireless Communications, vol.16, issue.6, 2016.
DOI : 10.1109/TWC.2017.2683482

URL : https://hal.archives-ouvertes.fr/hal-01781863

J. Qiao, Y. He, and S. Shen, Proactive Caching for Mobile Video Streaming in Millimeter Wave 5G Networks, IEEE Transactions on Wireless Communications, vol.15, issue.10, pp.7187-7198, 2016.
DOI : 10.1109/TWC.2016.2598748

T. X. Tran and D. Pompili, Octopus: A Cooperative Hierarchical Caching Strategy for Cloud Radio Access Networks, 2016 IEEE 13th International Conference on Mobile Ad Hoc and Sensor Systems (MASS), 2016.
DOI : 10.1109/MASS.2016.029

Y. Guo, L. Duan, and R. Zhang, Cooperative Local Caching under Heterogeneous File Preferences, IEEE Transactions on Communications, 2016.
DOI : 10.1109/TCOMM.2016.2620164

E. Bastug, M. Bennis, M. Kountouris, and M. Debbah, Cache-enabled small cell networks: Modeling and tradeoffs, 2014 11th International Symposium on Wireless Communications Systems (ISWCS), 2015.
DOI : 10.1109/ISWCS.2014.6933434

URL : https://hal.archives-ouvertes.fr/hal-01094822

Z. Ye, C. Pan, H. Zhu, and J. Wang, Tradeoff caching strategy of outage probability and fronthaul usage in Cloud-RAN, 2016.

M. Mozaffari, W. Saad, M. Bennis, and M. Debbah, Unmanned Aerial Vehicle With Underlaid Device-to-Device Communications: Performance and Tradeoffs, IEEE Transactions on Wireless Communications, vol.15, issue.6, pp.3949-3963, 2016.
DOI : 10.1109/TWC.2016.2531652

URL : https://hal.archives-ouvertes.fr/hal-01789328

Y. Zeng, R. Zhang, and T. J. Lim, Throughput Maximization for UAV-Enabled Mobile Relaying Systems, IEEE Transactions on Communications, vol.64, issue.12, pp.4983-4996, 2016.
DOI : 10.1109/TCOMM.2016.2611512

M. Mozaffari, W. Saad, M. Bennis, and M. Debbah, Efficient Deployment of Multiple Unmanned Aerial Vehicles for Optimal Wireless Coverage, IEEE Communications Letters, vol.20, issue.8, pp.1647-1650, 2016.
DOI : 10.1109/LCOMM.2016.2578312

URL : https://hal.archives-ouvertes.fr/hal-01777917

A. Al-hourani, S. Kandeepan, and A. Jamalipour, Modeling air-toground path loss for low altitude platforms in urban environments, Proc. of IEEE Global Communications Conference (GLOBECOM), 2014.

I. Bor-yaliniz and H. Yanikomeroglu, The New Frontier in RAN Heterogeneity: Multi-Tier Drone-Cells, IEEE Communications Magazine, vol.54, issue.11, pp.48-55, 2016.
DOI : 10.1109/MCOM.2016.1600178CM

E. Kalantari, H. Yanikomeroglu, and A. Yongacoglu, On the Number and 3D Placement of Drone Base Stations in Wireless Cellular Networks, 2016 IEEE 84th Vehicular Technology Conference (VTC-Fall), 2016.
DOI : 10.1109/VTCFall.2016.7881122

M. Mozaffari, W. Saad, M. Bennis, and M. Debbah, Mobile Internet of Things: Can UAVs Provide an Energy-Efficient Mobile Architecture?, 2016 IEEE Global Communications Conference (GLOBECOM), 2016.
DOI : 10.1109/GLOCOM.2016.7841993

URL : https://hal.archives-ouvertes.fr/hal-01778784

M. Mozaffari, W. Saad, M. Bennis, and M. Debbah, Drone small cells in the clouds: Design, deployment and performance analysis, Proc. of IEEE Global Communications Conference (GLOBECOM), 2015.
URL : https://hal.archives-ouvertes.fr/hal-01241726

N. T. Nguyen, Y. Wang, H. Li, X. Liu, and Z. Han, Extracting typical users' moving patterns using deep learning, Proc. of IEEE Global Communication Conference (GLOBECOM), 2012.

J. K. Lee and J. C. Hou, Modeling steady-state and transient behaviors of user mobility:, Proceedings of the seventh ACM international symposium on Mobile ad hoc networking and computing , MobiHoc '06, pp.85-96, 2006.
DOI : 10.1145/1132905.1132915

X. Wang, L. Duan, and R. Zhang, User-Initiated Data Plan Trading via a Personal Hotspot Market, IEEE Transactions on Wireless Communications, vol.15, issue.11, pp.7885-7898, 2016.
DOI : 10.1109/TWC.2016.2608957

C. Song, Z. Qu, A. L. Blumm, and . Barabasi, Limits of Predictability in Human Mobility, Science, vol.73, issue.3 Pt 2, pp.1018-1021, 2010.
DOI : 10.1038/20144

E. Bastug, M. Bennis, E. Zeydan, M. A. Kader, I. A. Karatepe et al., Big data meets telcos: A proactive caching perspective, Journal of Communications and Networks, vol.17, issue.6, pp.549-557, 2015.
DOI : 10.1109/JCN.2015.000102

URL : https://hal.archives-ouvertes.fr/hal-01309770

D. A. Soysa, D. G. Chen, O. C. Au, and A. Bermak, Predicting YouTube content popularity via Facebook data: A network spread model for optimizing multimedia delivery, 2013 IEEE Symposium on Computational Intelligence and Data Mining (CIDM), 2013.
DOI : 10.1109/CIDM.2013.6597239

F. Hoppner and F. Klawonn, Clustering with Size Constraints, 2008.
DOI : 10.1007/978-3-540-79474-5_8

T. Yoo and A. Goldsmith, On the optimality of multiantenna broadcast scheduling using zero-forcing beamforming, IEEE Journal on Selected Areas in Communications, vol.24, issue.3, pp.528-541, 2006.

T. S. Rappaport, Wireless Communications: Principles and Practice, 2002.

T. S. Rappaport, F. Gutierrez, E. Ben-dor, J. N. Murdock, Y. Qiao et al., Broadband Millimeter-Wave Propagation Measurements and Models Using Adaptive-Beam Antennas for Outdoor Urban Cellular Communications, IEEE Transactions on Antennas and Propagation, vol.61, issue.4, pp.1850-1859, 2013.
DOI : 10.1109/TAP.2012.2235056

O. Somekh, O. Simeone, Y. Bar-ness, A. M. Haimovich, and S. Shamai, Cooperative Multicell Zero-Forcing Beamforming in Cellular Downlink Channels, IEEE Transactions on Information Theory, vol.55, issue.7, pp.3206-3219, 2009.
DOI : 10.1109/TIT.2009.2021371

URL : http://webee.technion.ac.il/uploads/file/publication/670.pdf

K. Mitra, A. Zaslavsky, and C. Ahlund, Context-Aware QoE Modelling, Measurement, and Prediction in Mobile Computing Systems, IEEE Transactions on Mobile Computing, vol.14, issue.5, pp.920-936, 2015.
DOI : 10.1109/TMC.2013.155

URL : http://ltu.diva-portal.org/smash/get/diva2:982669/FULLTEXT01

J. Herbert and H. Harald, Harnessing nonlinearity: Predicting chaotic systems and saving energy in wireless communication, Science, vol.304, issue.5667, pp.78-80, 2004.

H. Jaeger, Controlling recurrent neural networks by conceptors, " available online: arxiv.org/abs/1403, 2014.

M. , Luko? sevicius, A Practical Guide to Applying Echo State Networks, 2012.

M. Bennis, S. M. Perlaza, P. Blasco, Z. Han, and H. V. Poor, Self-Organization in Small Cell Networks: A Reinforcement Learning Approach, IEEE Transactions on Wireless Communications, vol.12, issue.7, pp.3202-3212, 2013.
DOI : 10.1109/TWC.2013.060513.120959

URL : https://hal.archives-ouvertes.fr/hal-01281016

M. Chen, W. Saad, and C. Yin, Echo State Networks for Self-Organizing Resource Allocation in LTE-U With Uplink???Downlink Decoupling, IEEE Transactions on Wireless Communications, vol.16, issue.1, 2017.
DOI : 10.1109/TWC.2016.2616400

M. Inaba, N. Katoh, and H. Imai, -clustering, Proceedings of the tenth annual symposium on Computational geometry , SCG '94, 1994.
DOI : 10.1145/177424.178042