Public WLAN Virtualization for Multiple Services

Kazuhiko KINOSHITA  Kazuki GINNAN  Keita KAWANO  Hiroki NAKAYAMA  Tsunemasa HAYASHI  Takashi WATANABE  

IEICE TRANSACTIONS on Communications   Vol.E102-B   No.4   pp.832-844
Publication Date: 2019/04/01
Publicized: 2018/10/10
Online ISSN: 1745-1345
DOI: 10.1587/transcom.2018EBP3159
Type of Manuscript: PAPER
Category: Network
Wi-Fi,  bandwidth guarantee,  network virtualization,  virtual AP,  multiple services,  

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The recent widespread use of high-performance terminals has resulted in a rapid increase in mobile data traffic. Therefore, public wireless local area networks (WLANs) are being used often to supplement the cellular networks. Capacity improvement through the dense deployment of access points (APs) is being considered. However, the effective throughput degrades significantly when many users connect to a single AP. In this paper, users are classified into guaranteed bit rate (GBR) users and best effort (BE) users, and we propose a network model to provide those services. In the proposed model, physical APs and the bandwidths are assigned to each service class dynamically using a virtual AP configuration and a virtualized backhaul network, for reducing the call-blocking probability of GBR users and improving the satisfaction degree of BE users. Finally, we evaluate the performance of the proposed model through simulation experiments and discuss its feasibility.