Ecole d'ingénieur et centre de recherche en Sciences du numérique

Performance Modeling, analysis, and optimization of delayed mobile data offloading for mobile users

Mehmeti, Fidan; Spyropoulos, Thrasyvoulos

IEEE/ACM Transactions on Networking, February 2017, Vol. 25, N°1, ISSN: 1063-6692

Operators have recently resorted to Wi-Fi offloading to deal with increasing data demand and induced congestion. Researchers have further suggested the use of delayed offloading: if no Wi-Fi connection is available, (some) traffic can be delayed up to a given deadline or until WiFi becomes available. Nevertheless, there is no clear consensus as to the benefits of delayed offloading, with a couple of recent experimental studies largely diverging in their conclusions, nor is it clear how these benefits depend on network characteristics (e.g., Wi-Fi availability), user traffic load, and so on. In this paper, we propose a queueing analytic model for delayed offloading, and derive the mean delay, offloading efficiency, and other metrics of interest, as a function of the user's patience, and key network parameters for two different service disciplines (First Come First Served and Processor Sharing). We validate the accuracy of our results using a range of realistic scenarios and real data traces. Finally, we use these expressions to show how the user could optimally choose deadlines by solving the variations of a constrained optimization problem, in order to maximize her own benefits.

Doi Bibtex

Titre:Performance Modeling, analysis, and optimization of delayed mobile data offloading for mobile users
Mots Clés:Mobile data offloading, deadlines, queueing, 2D Markov chain, optimization
Type:Journal
Langue:English
Ville:
Date:
Département:Systèmes de Communication
Eurecom ref:4580
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Bibtex: @article{EURECOM+4580, doi = {http://dx.doi.org/10.1109/TNET.2016.2590320}, year = {2016}, month = {07}, title = {{P}erformance {M}odeling, analysis, and optimization of delayed mobile data offloading for mobile users}, author = {{M}ehmeti, {F}idan and {S}pyropoulos, {T}hrasyvoulos}, journal = {{IEEE}/{ACM} {T}ransactions on {N}etworking, {F}ebruary 2017, {V}ol. 25, {N}°1, {ISSN}: 1063-6692 }, url = {http://www.eurecom.fr/publication/4580} }
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