[1] [1] BAIRAGI A K, MUNIR M S, ALSENWI M, et al. Coexistence mechanism between eMBB and uRLLC in 5G wireless networks[J]. IEEE Transactions on Communicationgs, 2021, 69(3): 1736-1749.

[2] [2] OLIVA D L, PEREZ X C, AZCORRA A, et al. Xhaul: toward an integrated fronthaul/backhaul architecture in 5G networks[J]. IEEE wireless communications, 2015, 22(5): 32-40.

[3] [3] CAMPS-MURD, GUTIERREZ J, GRASS E, et al. 5G-Xhaul: a novel wireless-optical SDN transport network to support joint 5G backhaul and fronthaul services[J]. IEEE Communications Magazine, 2019, 57(7): 99-105.

[4] [4] BIDKAR S, BONK R, PFEIFFER T. Low-latency TDM-PON for 5G Xhaul[C]//IEEE. Proceedings of 2020 22nd International Conference on Transparent Optical Networks (ICTON). Bari: IEEE, 2020: 1-4.

[5] [5] UZAWA H, HONDA K, NAKAMURA H, et al. Dynamic bandwidth allocation scheme for network-slicing-based TDM-PON toward the beyond-5G era[J]. Journal of Optical Communications and Networking, 2019, 12(2): A135-A143.

[6] [6] KASSAB R, SIMEONE O, POPOVSKI P. Coexistence of uRLLC and eMBB services in the C-RAN uplink: an information-theoretic study[C]// IEEE. Proceedings of 2018 IEEE Global Communications Conference (GLOBECOM). Abu Dhabi: IEEE, 2018: 18485138-1-18485138-6.

[9] [9] ETSI. Service requirements for next generation new services and markets (V15.6.0; 3GPP TS 22.261 version 15.6.0 Release 15): ETSI TS 122 261-2018[EB/OL].[2022-03-29]. https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=3107.

[10] [10] ERICSSON, HUAWEI, NEC, et al. eCPRI specification V2.0 common public radio interface: eCPRI interface specification[EB/OL].(2019-05-10)[2022-03-29]. http://www.cpri.info/spec.html.

[11] [11] LARSEN L, 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.