Abstract
The Cloud Radio Access Network (C-RAN), which is a novel architecture, has been proposed as a promising solution to overcome the challenges of Next Generation (5G) cellular networks, in terms of efficiency, capacity, scalability, flexibility and sustainability in a cost-effective way. In this paper, we develop an efficient resource allocation scheme in the fronthaul-constrained C-RAN to support users of different slices (service providers). Multiple slices (service providers) share the resource of an InP, each slice has its own quality-of-service (QoS) requirement. In specific, we formulate an optimization problem for maximizing network throughput by joint subcarrier, power allocation and user-RRH association assignment in the downlink transmission of C-RAN. This problem is NP-hard, therefore, we introduce a two-step suboptimal algorithm to solve it. The original problem is decomposed into joint power and subcarrier allocation subproblem and user-RRH association assignment subproblem. Firstly, we solving the user-RRH association subproblem under the fronthaul capacity constraint by the binary search algorithm. Then the dual decomposition algorithm is used to solve the power and subcarrier allocation subproblem. Simulation results demonstrate the effectiveness of our proposed algorithm.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsReferences
Checko, A., Christiansen, H.L., Yan, Y., et al.: Cloud RAN for mobile networks a technology overview. IEEE Commun. Surv. Tutorials 17(1), 405–426 (2015)
Peng, M., Wang, C., et al.: Fronthaul-constrained cloud radio access networks: insights and challenges. IEEE Wirel. Commun. 22(2), 152–160 (2015)
Huang, J., Duan, R., Cui, C., Chih-Lin, I.: Overview of cloud RAN. In: Proceedings of URSI General Assembly and Scientific Symposium (URSI GASS), Beijing, pp. 1–4, April 2014
Sun, Y., Li, C., Huang, Y., Yang, L.: Energy-efficient resource allocation in C-RAN with fronthaul rate constraints. In: Proceedings of International Conference on Wireless Communications Signal Processing (WCSP), Yangzhou, pp. 1–6, August 2016
Yoo, T.: Network slicing architecture for 5G network. In: Proceedings of International Conference on Information and Communication Technology Convergence (ICTC), Jeju Island, South Korea, pp. 1010–1014, October 2016
Pries, R., Morper, H.J., Galambosi, N., Jarschel, M.: Network as a service - a demo on 5G network slicing. In: Proceedings of International Teletraffic Congress (ITC), Wrzburg, Germany, pp. 209–211, September 2016
Parsaeefard, S., Dawadi, R., Derakhshani, M., Le-Ngoc, T.: Joint user-association and resource-allocation in virtualized wireless networks. IEEE Access 4, 2738–2750 (2016)
Kamel, M.I., Le, L.B., Girard, A.: LTE wireless network virtualization: dynamic slicing via flexible scheduling. In: Proceedings of IEEE, Vehicular Technology Conference (VTC), Vancouver, BC, pp. 1–5, September 2014
Feng, Z., Qiu, C., et al.: An effective approach to 5G: wireless network virtualization. IEEE Commun. Mag. 53(12), 53–59 (2015)
Niu, B., Zhou, Y., Shah-Mansouri, H., et al.: A dynamic resource sharing mechanism for cloud radio access networks. IEEE Trans. Wirel. Commun. 15(12), 8325–8338 (2016)
Liu, L., Zhang, R.: Downlink SINR balancing in C-RAN under limited fronthaul capacity. In: Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Shanghai, pp. 3506–3510, May 2016
Kokku, R., Mahindra, R., Zhang, H., Rangarajan, S.: NVS: a substrate for virtualizing wireless resources in cellular networks. IEEE ACM Trans. Netw. 20(5), 1333–1346 (2012)
Liu, L., Bi, S., Zhang, R.: Joint power control and fronthaul rate allocation for throughput maximization in OFDMA-based cloud radio access network. IEEE Trans. Commun. 63(11), 4097–4110 (2015)
Fallgren, M.: An optimization approach to joint cell, channel and power allocation in multicell relay networks. IEEE Trans. Wirel. Commun. 11(8), 2868–2875 (2012)
Boyd, S., Vandenberghe, L.: Convex Optimization. Cambridge University Press, Cambridge (2004)
Yu, W., Liu, R.: Dual methods for nonconvex spectrum optimization of multicarrier systems. IEEE Trans. Commun. 54(7), 1310–1322 (2006)
Acknowledgement
This work was supported in part by the National High Technology Research and Development Program (863 Program) of China under Grant No. 2014AA01A707.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2018 ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering
About this paper
Cite this paper
Zhang, X., Li, Y., Peng, M. (2018). Joint User-Association and Resource-Allocation in Virtualized C-RAN. In: Long, K., Leung, V., Zhang, H., Feng, Z., Li, Y., Zhang, Z. (eds) 5G for Future Wireless Networks. 5GWN 2017. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 211. Springer, Cham. https://doi.org/10.1007/978-3-319-72823-0_26
Download citation
DOI: https://doi.org/10.1007/978-3-319-72823-0_26
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-72822-3
Online ISBN: 978-3-319-72823-0
eBook Packages: Computer ScienceComputer Science (R0)