2022/03/17 by Quang-Trung Luu, Luu, Quang-Trung, Sylvaine Kerboeuf +3 · 1 citation
Computer Science · Engineering · #FOS: Computer and information sciences #Full-Duplex Wireless Communications #Network Traffic and Congestion Control #Networking and Internet Architecture (cs.NI) #Software-Defined Networks and 5G
paper · pdf · doi:10.48550/arxiv.2203.09367
openalex publication_date 2022/03/17 · openalex created_date 2022/05/05 · openalex updated_date 2026/07/28
Network slicing has emerged as a key concept in 5G systems, allowing Mobile\nNetwork Operators (MNOs) to build isolated logical networks (slices) on top of\nshared infrastructure networks managed by Infrastructure Providers (InP).\nNetwork slicing requires the assignment of infrastructure network resources to\nvirtual network components at slice activation time and the adjustment of\nresources for slices under operation. Performing these operations just-in-time,\non a best-effort basis, comes with no guarantee on the availability of enough\ninfrastructure resources to meet slice requirements.\n This paper proposes a prioritized admission control mechanism for concurrent\nslices based on an infrastructure resource reservation approach. The\nreservation accounts for the dynamic nature of slice requests while being\nrobust to uncertainties in slice resource demands. Adopting the perspective of\nan InP, reservation schemes are proposed that maximize the number of slices for\nwhich infrastructure resources can be granted while minimizing the costs\ncharged to the MNOs. This requires the solution of a max-min optimization\nproblem with a non-linear cost function and non-linear constraints induced by\nthe robustness to uncertainties of demands and the limitation of the impact of\nreservation on background services. The cost and the constraints are linearized\nand several reduced-complexity strategies are proposed to solve the slice\nadmission control and resource reservation problem. Simulations show that the\nproportion of admitted slices of different priority levels can be adjusted by a\ndifferentiated selection of the delay between the reception and the processing\ninstants of a slice resource request.\n