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IEICE TRANSACTIONS on Communications

vEPC Optimal Resource Assignment Method for Accommodating M2M Communications

Kazuki TANABE, Hiroki NAKAYAMA, Tsunemasa HAYASHI, Katsunori YAMAOKA

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Summary :

The 5G mobile network environment has been studied and developed, and the concept of a vEPC (Virtualized Evolved Packet Core) has been introduced as a framework for Network Functions Virtualization (NFV). Machine-to-Machine (M2M) communications in 5G networks require much faster response than are possible in 4G networks. However, if both the control plane (C-plane) and the data plane (D-plane) functions of the EPC are migrated into a single vEPC server, M2M devices and other user equipments (UEs) share the same resources. To accommodate delay-sensitive M2M sessions in vEPC networks, not only signaling performance on the C-plane but also packet processing performance on the D-plane must be optimized. In this paper, we propose a method for optimizing resource assignment of C-plane and D-plane Virtualized Network Functions (VNFs) in a vEPC server, called the vEPC-ORA method. We distinguish the communications of M2M devices and smartphones and model the vEPC server by using queueing theory. Numerical analysis of optimal resource assignment shows that our proposed method minimizes the blocking rates of M2M sessions and smartphone sessions. We also confirmed that the mean packet processing time is kept within the allowable delay for each communication type, as long as the vEPC server has enough VM resources. Moreover, we study a resource granularity effect on the optimal resource assignment. Numerical analysis under a fixed number of hardware resources of MME and S/P-GW is done for various resource granularities of the vEPC server. The evaluation results of numerical analyses showed that the vEPC-ORA method derives the optimal resource assignment in practical calculation times.

Publication
IEICE TRANSACTIONS on Communications Vol.E101-B No.3 pp.637-647
Publication Date
2018/03/01
Publicized
2017/09/19
Online ISSN
1745-1345
DOI
10.1587/transcom.2017NRP0012
Type of Manuscript
Special Section PAPER (Special Section on Network Resource Control and Management for IoT Services and Applications)
Category

Authors

Kazuki TANABE
  Tokyo Institute of Technology
Hiroki NAKAYAMA
  BOSCO Technologies Inc.
Tsunemasa HAYASHI
  BOSCO Technologies Inc.
Katsunori YAMAOKA
  Tokyo Institute of Technology

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