Congestion-Aware DNS for Integrated Cellular and Wi-Fi Networks

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

19 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Article number7886338
Pages (from-to)1269-1281
Journal / PublicationIEEE Journal on Selected Areas in Communications
Volume35
Issue number6
Online published24 Mar 2017
Publication statusPublished - Jun 2017
Externally publishedYes

Abstract

Intelligent network selection plays an important role in achieving an effective data offloading in the integrated cellular and Wi-Fi networks. However, previously proposed network selection schemes mainly focused on offloading as much data traffic to Wi-Fi as possible, without systematically considering the Wi-Fi network congestion and the ping-pong effect, both of which may lead to a poor overall user quality of experience. Thus, in this paper, we study a more practical network selection problem by considering both the impacts of the network congestion and switching penalties. More specifically, we formulate the users' interactions as a Bayesian network selection game (NSG) under the incomplete information of the users' mobilities. We prove that it is a Bayesian potential game and show the existence of a pure Bayesian-Nash equilibrium that can be easily reached. We then propose a distributed network selection (DNS) algorithm based on the network congestion statistics obtained from the operator. Furthermore, we show that computing the optimal centralized network allocation is an NP-hard problem, which further justifies our distributed approach. Simulation results show that the DNS algorithm achieves the highest user utility and a good fairness among users, as compared with the on-the-spot offloading and cellular-only benchmark schemes.

Research Area(s)

  • Bayesian potential game, cellular and Wi-Fi integration, Mobile data offloading, network selection

Citation Format(s)

Congestion-Aware DNS for Integrated Cellular and Wi-Fi Networks. / Cheung, Man Hon; Hou, Fen; Huang, Jianwei; Southwell, Richard.

In: IEEE Journal on Selected Areas in Communications, Vol. 35, No. 6, 7886338, 06.2017, p. 1269-1281.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review