AT&T Labs Research - AT&T Research at IEEE International Conference on Computer Communications (INFOCOM)

AT&T Research at IEEE International Conference on Computer Communications (INFOCOM)

Apr 10 - 15, 2011

Shanghai, China

AT&T Research will have a strong presence at this year's conference, presenting six papers. K. K. Ramakrishnan will be chairing two sessions: Cloud and Network Management (Monday at 11:00) and Network Protocols (Thursday at 1:30).

Main conference:

TS20: Network coding 2: Hulya Seferoglu (University of California, Irvine, USA)

I2NC: Intra- and Inter-Session Network Coding for Unicast Flows in Wireless Networks Published in the Proceedings of IEEE INFOCOM 2011

April 12, 2011 at 04:00 PM

I2NC: Intra- and Inter-Session Network Coding for Unicast Flows in Wireless Networks
Athina Markopoulou, Hulya Seferoglu, Kadangode Ramakrishnan
IEEE Infocom 2011 Conference, 2011. [BIB]

TS55: Internet monitoring and measurement : Joel Sommers (Colgate University, USA)

Efficient Network-wide Flow Record Generation Published in the Proceedings of IEEE INFOCOM 2011

April 14, 2011 at 08:30 AM

TS16: Cognitive radio and software defined radio 3 : Rittwik Jana

Network Selection for Secondary Users in Cognitive Radio Systems Published in the Proceedings of IEEE INFOCOM 2011

April 14, 2011 at 01:30 PM

Network Selection for Secondary Users in Cognitive Radio Systems
Chonggang Wang, Kazem Sohraby, Rittwik Jana, Lusheng Ji, Mahmoud Daneshmand
INFOCOM 2011, 2011. [BIB]

{Measurement studies have shown that uneven and dynamic usage patterns by the primary users of license based wireless communication systems often lead to temporal and spatial spectrum underutilization. This provides an opportunity for secondary users (SU) to tap into underutilized frequency bands provided that they are capable of cognitively accessing the networks without colliding or impacting the performance of the primary users (PU). When there are multiple networks with spare spectrum, secondary users can opportunistically choose the best network to access, subject to certain constraints. In cognitive radio systems, this is referred to as the network selection problem for secondary users. This paper first formulate a Markov queuing model to obtain the maximum allowable arrival rate of secondary users subject to a target collision probability for the primary users. Based on this model, a Collision-Constrained Network Selection (CCNS) method is proposed to maximize secondary users throughput subject to a given PU collision probability. Two more approaches, referred as CCNS-Greedy and CCNS-Energy, are designed to furthermore reduce collision probability and to decrease energy consumption of secondary users, when the system is underloaded. However, CCNS strictly relies on PU and SU traffic characteristics such as inter-arrival time and service time. Then, MEAsurement-based Networks Selection (MEANS) is proposed to perform network selection for secondary users based on online measurement of PU collision probability of each network, with the same objective to regulate PU collision probability of each network below the target value. Later, an enhanced MEANS (MEANS+) is designed to improve SU throughput while not violating the target PU collision probability. Simulation based extensive performance evaluation has shown that the proposed schemes achieve the best performance in terms of resulted PU collision probability, SU throughput, and SU energy consumption, compared to Random and Greedy strategies.}

TS63: Wireless LAN/MAN 2 : Rittwik Jana

Modeling and Characterization of Large-Scale Wi-Fi Traffic in Public Hot-Spots Published in the Proceedings of IEEE INFOCOM 2011

April 14, 2011 at 01:30 PM

Speed Testing without Speed Tests: Estimating Achievable Download Speed from Passive Measurements
Jeffrey Pang, Shobha Venkataraman, Oliver Spatscheck, Alexandre Gerber
in Proc. of ACM Internet Measurement Conference (IMC), 2010. [PDF] [BIB]

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Mini-conferences: