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On the Compound Impact of Opportunistic Scheduling and D2D Communications in Cellular Networks

Arash Asadi, PhD Student, IMDEA Networks Institute & University Carlos III of Madrid (UC3M), Spain
23 October 2013 - 1:00pm

Room 4.1.F03 - Torres Quevedo Building, University Carlos III of Madrid, Avda. Universidad, 30, 28911 Leganés – Madrid

Opportunistic scheduling was initially proposed to exploit user channel diversity for network capacity enhancement. However, the achievable gain of opportunistic schedulers is generally restrained due to fairness considerations which impose a tradeoff between fairness and throughput. In this paper, we show via analysis and numerical simulations that opportunistic scheduling not only increases network throughput dramatically, but also increases energy efficiency and can be fair to the users when they cooperate, in particular by using D2D communications. We propose to leverage smartphone's dual-radio interface capabilities to form clusters among mobile users. We design simple, scalable and energy-efficient D2D-assisted opportunistic strategies, which would incentivize mobile users to form clusters. We use a coalitional game theory approach to analyze the cluster formation mechanism, and show that proportional fair-based intra-cluster payoff distribution brings significant incentive to all mobile users regardless of their channel quality.

About Arash Asadi

Arash Asadi received a master with highest distinction in Telematics Engineering from University Carlos III of Madrid, Spain, in October 2012, and a master degree in Telecommunication Engineering from Multimedia University, Malaysia in January 2011. He obtained his bachelor degree in Electronic Engineering from Islamic Azad University, Iran, in 2006.

Since 2011, he has worked as research officer at Multimedia University, focusing on channel capacity improvements of wireless networks. Since July 2011, Arash is with Institute IMDEA Networks, pursuing his PhD studies while being involved in research project addressing resource allocation in wireless network and next-generation cooperative networks.

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This event will be conducted in English