[1] LARSEN L M P, CHECKO A, CHRISTIANSEN H L. A survey of the functional splits proposed for 5G mobile crosshaul networks[J]. IEEE Communications Surveys & Tutorials, 2018, 21（1）: 146-172.
[3] PARK K, SUNG S, KIM H, et al. Technology trends and challenges in SDN and service assurance for end-to-end network slicing[J]. Computer Net works, 2023: 109908.
[7] GU J, ZHU M, WANG Y, et al. Resource-efficient and QoS guaranteed 5G RAN slice migration in elastic metro aggregation networks using heuristic-assisted deep reinforcement learning[J]. Journal of Optical Communications and Networking, 2023, 15（11）: 854-870.
[8] SUDHAKAR, KHAN A M, BATHAM D. Future generation elastic optical networks: a state-of-art review[C]//Springer Nature Singapore. Proceedings of International Conference on Data Science and Applications. Singapore: Springer Nature Singapore, 2023: 397-410.
[9] MARSCH P, D A SILVA I, BULAKCI O, et al. 5G radio access network architecture: design guidelines and key considerations[J]. IEEE Communications Magazine, 2016, 54（11）: 24-32.
[10] DTSCH U, DOLL M, MAYER H P, et al. Quantitative analysis of split base station processing and determination of advantageous architectures for LTE[J]. Bell Labs Technical Journal, 2013, 18（1）: 105-128.
[12] DEBAILLIE B, DESSET C, LOUAGIE F. A flexible and future-proof power model for cellular base stations[C]//IEEE. Proceedings of 2015 IEEE 81st Vehicular Technology Conference （VTC Spring）. Glasgow: IEEE, 2015: 1-7.
[13] MATOUSSI S, FAJJARI I, COSTANZO S, et al. 5G RAN: functional split orchestration optimization[J]. IEEE Journal on Selected Areas in Communications, 2020, 38（7）: 1448-1463.
[14] ZHU Q, YU X, ZHAO Y, et al. Auxiliary-graph-based energy-efficient traffic grooming in IP-over-fixed/flex-grid optical networks [J]. Journal of Lightwave Technology, 2021, 39（10）: 3011-3024.
[15] NEELY M. Stochastic network optimization with application to communication and queueing systems[M]. Springer Nature, 2022.
[16] HADI M, PAKRAVAN M R, AGRELL E. Dynamic resource allocation in metro elastic optical networks using Lyapunov drift optimization[J]. Journal of Optical Communications and Networking, 2019，11（6）: 250-259.
[17] HADI M, AGRELL E. Joint power-efficient traffic shaping and service provisioning for metro elastic optical networks[J]. Journal of Optical Communications and Networking, 2019, 11（12）: 578-587.
