Title
On Reconfiguring 5G Network Slices
Abstract
The virtual resources of 5G networks are expected to scale and support migration to other locations within the substrate. In this context, a configuration for 5G network slices details the instantaneous mapping of the virtual resources across all slices on the substrate, and a feasible configuration satisfies the Service-Level Objectives (SLOs) without overloading the substrate. Reconfiguring a network from a given source configuration to the desired target configuration involves identifying an ordered sequence of feasible configurations from the source to the target. The proposed solutions for finding such a sequence are optimized for data centers and cannot be used as-is for reconfiguring 5G network slices. We present <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Matryoshka</italic> , our divide-and-conquer approach for finding a sequence of feasible configurations that can be used to reconfigure 5G network slices. Unlike previous approaches, <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Matryoshka</italic> also considers the bandwidth and latency constraints between the network functions of network slices. Evaluating <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Matryoshka</italic> required a dataset of pairs of source and target configurations. Because such a dataset is currently unavailable, we analyze proof of concept roll-outs, trends in standardization bodies, and research sources to compile an input dataset. On using <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Matryoshka</italic> on our dataset, we observe that it yields close-to-optimal reconfiguration sequences <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">10X</italic> faster than existing approaches.
Year
DOI
Venue
2020
10.1109/JSAC.2020.2986898
IEEE Journal on Selected Areas in Communications
Keywords
DocType
Volume
5G mobile communication,Substrates,Data centers,Bandwidth,Network slicing,Virtual machining
Journal
38
Issue
ISSN
Citations 
7
0733-8716
0
PageRank 
References 
Authors
0.34
0
6
Name
Order
Citations
PageRank
Matteo Pozza142.07
Patrick K. Nicholson200.34
Diego Lugones3359.77
Ashwin Rao422218.67
Hannu Flinck541628.13
Sasu Tarkoma61312125.76