IMDEA Networks Institute Publications Repository

User Association to Optimize Flow Level Performance in Wireless Systems with Dynamic Interference

Rengarajan, Balaji and de Veciana, Gustavo (2009) User Association to Optimize Flow Level Performance in Wireless Systems with Dynamic Interference. In: Workshop on Network Control and Optimization (Net-Coop 2009), 23 - 25 November 2009, Eindhoven, The Netherlands.

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We study the impact of user association policies on flow-level performance in interference limited wireless networks. Most research in this area has used static interference models (neighboring base stations are always active) and resorted to intuitive objectives such as load balancing. In this paper, we show that this can be counterproductive in the presence of dynamic interference which couples the transmission rates to users at various base stations.We propose a methodology to optimize the performance of a class of coupled systems, and apply it to study the user association problem.We show that by properly inducing load asymmetries, substantial performance gains can be achieved relative to a load balancing policy (e.g., 15 times reduction in mean delay). Systematic simulations establish that our optimized static policy substantially outperforms various dynamic policies and that these results are robust to changes in file size distributions, channel parameters, and spatial load distributions.

Item Type: Conference or Workshop Papers (Paper)
Uncontrolled Keywords: User association, flow-level performance, coupled queues, semidefinite programming
Subjects: Q Science > Q Science (General)
Q Science > QA Mathematics > QA75 Electronic computers. Computer science
T Technology > T Technology (General)
T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering, Science and Mathematics > School of Electronics and Computer Science
Depositing User: Systems Ad Systems Administrator
Date Deposited: 14 Feb 2012 13:52
Last Modified: 03 Dec 2014 13:05

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