3rd Annual
CoNEXT Conference
Columbia University
New York, NY
December 10-13, 2007

Changing Internetworking Paradigms
Sponsored by ACM Sigcomm

Student Workshop Program


Time Location Plenary
08:45 AM-09:00 AM Davis Auditorium Welcome and introductory remarks
09:00 AM-10:00 AM Davis Auditorium Talk: Hints on Doing Research
10:00 AM-10:30 AM Davis Foyer Coffee Break
10:30 AM-12:00 PM Davis Foyer, 414 CEPSR Poster Session I
12:00 PM-01:30 PM On your own Lunch
01:30 PM-02:30 PM Davis Auditorium VINI: Virtual Network Infrastructure
02:30 PM-03:00 PM Davis Foyer Coffee Break
03:00 PM-04:30 PM Davis Foyer, 414 CEPSR Poster Session II
04:30 PM-06:00 PM Interschool Lab (7th floor) Panel: Research after Graduate School

Welcome and introductory remarks

Suman Banerjee (University of Wisconsin, USA); Roger Karrer (Technical University of Berlin, Germany); Ashwin Sridharan (Sprint, USA)

Hints on Doing Research

Srinivasan Keshav, University of Waterloo, Canada

Poster Session I: Internet Architecture, Traffic Engineering, Measurement, Modeling and Related Peer-to-Peer Networks

Do you know what you are generating?
Antonio Pescape' (University of Napoli Federico II, IT), Alessio Botta (University of Napoli Federico II, IT), Alberto Dainotti (University of Napoli Federico II, IT)
The BlueGame Project: an Ad-hoc Multilayer Mobile Game with Social Dimension
Roman Spanek (TUL, CZ)
An AS-level IP Traceback System
Andre Castelucio (Military Institute of Engineering, BR), Ronaldo Salles (Military Institute of Engineering, BR), Artur Ziviani (LNCC, BR)
Measuring P2P IPTV Traffic on Both Sides of the World
Thomas Silverston (Université Pierre et Marie Curie, FR), Olivier Fourmaux (University Pierre et Marie Curie (Paris6), FR), Kave Salamatian (University Paris 6, FR), Kenjiro Cho (IIJ, JP)
Automating the iBGP organization in large IP networks
Virginie Van den Schriek (Université catholique de Louvain (UCL), BE)
Towards next generation network requirements for next generation gaming
Alberto Hernandez (Universidad Politecnica de Madrid, ES), Enrique Vazquez (Technical University of Madrid, ES), Carolina Garcia (Universidad Politecnica de Madrid, ES)
Multiplexing BGP Sessions with BGP-Mux
Vytautas Valancius (Georgia Tech, US), Nick Feamster (Georgia Institute of Technology, US)
Implementation and Preliminary Evaluation of an ISP-Driven Informed Path Selection
Damien Saucez (Université catholique de Louvain, BE), Benoit Donnet (Université catholique de Louvain, BE), Olivier Bonaventure (Université catholique de Louvain, BE)
Resource-Efficient Software Delivery Using Volunteer Assistance
Purvi Shah (University of Houston, US), Jehan-Francois Paris (University of Houston, US), Miranda Mowbray(Hewlett-Packard Labs, UK)
Securing BGP Incrementally
Martin Suchara (Princeton University, US), Ioannis Avramopoulos (Princeton University, US), Jennifer Rexford (Princeton University, US)
Fairer TCP-Friendly Congestion Control Protocol for Multimedia Streaming Applications
Soo-Hyun Choi (University College London, UK), Mark Handley(University College London, UK)
A secure role-based address allocation and distribution mechanism
Damien Leroy (Université catholique de Louvain, BE), Olivier Bonaventure (Université catholique de Louvain, BE)
Characterizing Quality of Content Distribution from YouTube like Portals
Anirban Banerjee (University of California, Riverside, US), Dhiman Barman (UC, Riverside, US)
Characterizing network events and their impact on routing
Geneviève Amélie Medem Kuatse (University of Pierre et Marie Curie, FR), Renata Teixeira (CNRS and Université Pierre et Marie Curie, FR), Mickael Meulle (France Telecom R&D, FR)
A Next Generation Internet Architecture for Mobility and Multi-homing Support
Walter Wong (State University of Campinas, BR), Fábio Verdi (University of Campinas (UNICAMP), BR), Maurício Magalhães (University of Campinas (Unicamp), BR)
A Networked Virtual Environment over KAD
Matteo Varvello (Eurecom - Thomson, FR), Ernst Biersack (Institut EURECOM, FR), Christophe Diot (Thomson, FR)
Identifying statistically anomalous regions in time series of network traffic
Fernando Silveira (Thomson, FR), Christophe Diot (Thomson, FR)
Is Your IP Address Prefix Well-Served by Internet Routing?
Yibo Wang (University of Oregon, US), Jun Li(University of Oregon, US)
mod_kaPoW: Mitigating DoS with Transparent Proof-of-Work
Ed Kaiser (Portland State University, US), Wu-chang Feng(Portland State University, US)
Application and Desktop Sharing
Omer Boyaci (Columbia University, US), Henning Schulzrinne (Columbia University, US)
Enabling Session Initiation in the Presence of Middleboxes
Sergio Lembo (Helsinki University of Technology, FI), Jani Heikkinen (Helsinki University of Technology, FI)
A Next Generation Internet State Management Framework
Xin Huang (University of Massachusetts, Amherst, US), Tilman Wolf (University of Massachusetts, Amherst, US)
Understanding the Effect of P2P Overlay On the AS-Level Underlay
Amir Hassan Rasti Ekbatani (University of Oregon, US), Reza Rejaie (University of Oregon, US), Walter Willinger (AT&T Labs - Research, US)
A Quicker Way to Discover Nearby Peers
Gwendal Simon (GET - ENST-Bretagne, FR), Yiping CHEN (Thomson R&D France, FR), Ali Boudani (Thomson multimedia, FR), Gilles Straub (Thomson France, FR)

VINI: Virtual network Infrastructure

Jennifer Rexford, Princeton University

Today's Internet, based on the "narrow waist" of IP, has been an immense success, leading to significant innovation in new applications and services at the network edge. However, evolving the underlying network architecture is remarkably difficult, leading to a fairly brittle infrastructure that is insecure, difficult to manage, and at times unreliable. This talk argues that virtualization offers a way to build flexible, evolvable networks for the future. First, network virtualization allows us to build experimental facilities, such as the proposed GENI (Global Environment for Network Innovations) initiative, that would allow many researchers to evaluate prototypes of new network architectures in parallel. Second, network virtualization may be a viable long-term platform for supporting multiple network architectures, each customized to particular applications or users. In this talk, we will describe the design and implementation of our VINI testbed, and the deployment in the National Lambda Rail and Abilene Internet2 backbones. We will also discuss how network virtualization enables an economic refactoring of the Internet into infrastructure providers (who manage the physical infrastructure and "lease" virtual nodes and links) and service providers (who construct virtual networks to offer end-to-end services).

Poster Session II: Wireless, Adhoc, Delay Tolerant, Sensor and Peer-to-Peer Networks

Promoting Fluidity in the Flow of Packets of 802.11 Wireless Mesh Networks
Adel Aziz (EPFL, CH), Roger Karrer (Technical University Berlin, DE), Patrick Thiran (EPFL, CH)
Fairness Enhancement in Wireless Mesh Networks
Salim Nahle (University of Paris 6, FR), Naceur Malouch (University of Paris 6, FR)
Towards the Realization of a Mobile Grid
Konstantinos Katsaros (Athens University of Economics and Business, GR), George Polyzos (Athens University of Economics and Business, GR)
Reproducing Opportunistic Connectivity Traces Using Connectivity Models
Thabotharan Kathiravelu (Uppsala University, SE)
Molecular Architecture for Autonomic Wireless Mesh Networks
Mohammad Nassiri (Grenoble Informatics Laboratory, FR), Fabrice Theoleyre (Grenoble Informatics Laboratory, FR), Martin Heusse (Grenoble Informatics Laboratory, FR), Andrzej Duda (Grenoble Informatics Laboratory, FR)
Replacing Channel Scanning with Multiple Authentication for Fast Handoff in IEEE 802.11 Wireless Networks
Jaeouk Ok (The University of Tokyo, JP), Pedro Morales (The University of Tokyo, JP), Hiroyuki Morikawa (The University of Tokyo, JP)
Can Active Tracking of Inroamer Location Optimise a Live GSM Network?
Katerina Dufková (CTU-Ericsson-Vodafone R&D Centre (RDC), CZ), Jirí Danihelka (CTU-Ericsson-Vodafone R&D Centre (RDC), CZ), Michal Ficek (CTU-Ericsson-Vodafone R&D Centre (RDC), CZ), Ivan Gregor (CTU-Ericsson-Vodafone R&D Centre (RDC), CZ), Jan Kouba (CTU-Ericsson-Vodafone R&D Centre (RDC), CZ)
Can we reduce Wi-Fi Energy Consumption during VoIP Calls?
Vinod Namboodiri (University of Massachusetts, Amherst, US), Lixin Gao (University of Massachusetts at Amherst, US)
Probabilistic Inference of Lossy Links Using End-to-End Data in Sensor Networks
Wei Zeng (University of Connecticut, US), Bing Wang (University of Connecticut, US), Krishna Pattipati (University of Connecticut, US)
Folksonomy-based Reasoning in Opportunistic Networks
Nishanth Sastry (University of Cambridge, UK)
Capture-Aware Staggering for Concurrent Transmissions
Naveen Kumar Santhapuri (University of South Carolina, US), Srihari Nelakuditi (University of South Carolina, US), Romit Roy Choudhury (Duke University, US)
Extending Web Browsers Architectures to support HTTP Session Mobility
Michael Adeyeye (University of Cape Town, ZA), Neco Ventura (University of Cape Town, ZA)
SWARM: Towards Optimally Self-Organized Community Wireless Networks
Saumitra Das (Purdue University, West Lafayette, US), Konstantina Papagiannaki (Intel Research, US), Suman Banerjee (University of Wisconsin, US), 0,1 Tay (National Univ. of Singapore, SG)
Towards a Clustering Based Data Diffusion Protocol In Delay Tolerant Networks
Sana Tmar (INSA de LYON, FR), Eric Fleury (ENS Lyon / INRIA, FR)
A gateway for wireless broadcasting
Kristjan Jonsson (Reykjavik University, IS), Olafur Helgason (KTH, Royal Institute of Technology, SE), Gunnar Karlsson (KTH, Royal Institute of Technology, SE)
Novel Approach for Creating Trust to Reduce Malicious Behavior in MANET
Syed Rizvi (University of Bridgeport, US), Saroj Poudyal (University of Bridgeport, US), Varsha Edla (University of Bridgeport, US), Ravi Nepal (University of Bridgeport, US)
Daily Walks In Paris: A Practical Analysis of Wi-Fi Access Points
Guillaume Valadon (Université Pierre et Marie Curie-Paris6, FR), Florian Le Goff (Université Pierre et Marie Curie-Paris6, FR), Christophe Berger (Université Pierre et Marie Curie - Paris6, FR)
Exploring the Routing Complexity of Mobile Multicast - A Semi-empirical Study
Matthias Wählisch (HAW Hamburg & link-lab, DE), Thomas Schmidt (HAW Hamburg (DE), DE)
Experimenting with Real-life Opportunistic Communications using Windows Mobile Devices
Anna-Kaisa Pietiläinen (Thomson, FR), Christophe Diot (Thomson, FR)
Energy-Efficient MAC and Routing Design in Distributed Beamforming Sensor Networks
Dimitrios Koutsonikolas (Purdue University, US), Ali Jafri (Purdue University, US), Y. Charlie Hu (Purdue University, US)
Robust Routing in Networks With Time-Varying Links
Victoria Manfredi (University of Massachusetts Amherst, US)
A cross-layer load-independent link cost metric for Wireless Mesh Networks
Marianna Carrera (University Paris VI and Thomson, FR), Henrik Lundgren (Thomson Research, FR), Theodoros Salonidis (Thomson, FR), Christophe Diot (Thomson, FR)
Enabling Seamless Internet Mobility
Gregor Maier (TU-Berlin, DE), Wolfgang Mühlbauer (TU-Berlin, DE), Yevgen Rogoza (TU-München, DE), Anja Feldmann (Deutsche Telekom Laboratories, DE)
BonSwing: A GUI Framework for Ad-Hoc Applications Using Service Discovery
Suman Srinivasan (Columbia University, US), Henning Schulzrinne (Columbia University, US)
Bootstrapping Large-scale DHT Networks
Jae Lee (Columbia University, US), Henning Schulzrinne (Columbia University, US), Wolfgang Kellerer (DoCoMo EuroLaboratories, DE), Zoran Despotovic (DoCoMo Euro-Labs, DE)

Research After Graduate School

Moderator: Roch Guerin (University of Pennsylvania)
Panelists: David Oran (Cisco, USA), Vishal Misra (Columbia University), Serge Fdida (LIP6, France), Erich Nahum (IBM Research, USA)

This particular panel is being organized with the goal of a discussion that covers "soft skills" required to tackle the major hurdles and jumps in the learning curve a grad-student faces when moving from a comfortable research environment in graduate school to either a tenure-track academic position or a research/development lab. We were interested in highlighting the fact that though, ostensibly both environments are aimed at conducting "research", there are a whole other set of extraneous issues that also need to be dealt with, which can either be a nice experience or may end up placing a significant strain on time/resources/commitment to the extent of taking up all energy, depending on how they are approached. Indeed, the actual "nature" of research work may undergo a fundamental change when one moves out from the solo environment in graduate school. In an academic environment, apart from "research", one needs to figure out : grants, collaborations, students, teaching load etc. On the other hand, in the industrial environment there are certain demands like : deliverables, cost, timelines, topics that can raise questions on research vs. practicality, promotions, salaries etc.

This is something a graduate student typically never encounters in the graduate school environment and usually results in a big jolt in perspective when they move into these environments. By inviting panelists from both sides, we wanted to compare and contrast the nature and importance of such demands placed in either environment and suggestions on how to tackle them before they become a distraction to the actual goal of conducting research.

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