archive-edu.com » EDU » C » COLUMBIA.EDU

Total: 442

Choose link from "Titles, links and description words view":

Or switch to "Titles and links view".
  • Internet Real Time Lab (IRT) - Alumni
    Niksun Forte Andrea G Research Scientist Wireless networks 802 11 MAC layer QoS Fast Handoff SIP SigComp Layer 2 security VoIP Location based services IP Multimedia Subsystem IMS Francescangeli Roberto Gupta Gaurav Peer 2 peer networks computer networks Hong Se Gi Janardhan Vaishnav Kapoor Tarun VoIP Networking Telecommunications Kartha Nalini Kim Jong Yul Emergency calling using SIP Application support on cloud computing platforms Large scale distributed systems Krishnan Santosh Computer Networks Switching Multimedia Applied Mathematics Lee Jae Woo Lecturer in Discipline Computer Science Education Networks Software Engineering Cloud Computing Lennox Jonathan Michael Malladi Venkata Sastry Mehta Arpit Networks Mendes Paulo Moghadam Arezu Nagpal Sarvesh Information Security Privacy Anonymity Usability Nair Gautam Nambi Ajay Narayanan Sankaran Nayak Pallavi V Okabe Toshiya Ono Kumiko Network Security Pan Ping Papadopouli Maria Peters Henning Rao Archana Rosenberg Jonathan D Seo SungHoon Postdoctoral Research Scientist Wireless networking Handover procedure optimization Mobile WiMAX VoIP Shacham Ron Shen Charles Qi Internet Multimedia Wireless Mobile IP QoS Signaling IPv6 Shin Sangho VoIP in IEEE 802 11 Wireless Networks Singh Kundan N Internet telephony multimedia collaboration scalable and reliable distributed systems Singh Vishal K SIMPLE based presence systems P2P Telephony Overlay Networks Network Diagnosis Song Wonsang CS Columbia University

    Original URL path: http://www.cs.columbia.edu/irt/people/alumni (2016-02-17)
    Open archived version from archive


  • Internet Real Time Lab (IRT) - Post Docs
    S Students Visitors Alumni Post Docs Projects Publications Software Courses Student Projects Project List News and Events Sponsors Useful Links Contact Post Docs Copyright c 1998 2016 Internet Real Time

    Original URL path: http://www.cs.columbia.edu/irt/people/postdoc (2016-02-17)
    Open archived version from archive

  • Internet Real Time Lab (IRT) - Projects
    data network Operating as a mid level fidelity simulator it trains air traffic controllers in radio operations allowing students and instructors to work through scripted scenarios The FAA Academy is successfully using this VoIP system in six training rooms in their Oklahoma facility to train future air traffic controllers both from the United States and abroad GloServ Global service discovery Published Papers GloServ is a global service discovery architecture which uses the OWL ontology to classify services as well as map them onto nodes in a hybrid hierarchical and peer to peer network MassFilter Filtering gigabits of voice traffic Published Papers We are developing techniques for evaluating the performance of large scale firewalls for VoIP These firewalls need to handle tens of thousands of concurrent calls without leaking unauthorized packets or cutting of voice communications MobApp Personal service and session mobility for multimedia applications Published Papers Beyond terminal mobility next generation mobile systems need to support application layer mobility that allows a single user to be reachable under one identifier even when using multiple devices personal mobility to change devices while maintaining configuration information and to move active sessions possibly as components among mobile and stationary devices NetServ Enabling service virtualization at the Internet core Published Papers To address the limitations of services in the current Internet this work presents a clean slate Internet architecture called NetServ based on the concepts of service virtualization NetServ strives to break up the functions provided by Internet services and to make these functionalities available as modular building blocks for network services NG911 Next generation emergency calling for VoIP Published Papers The NG911 project is developing a prototype for a next generation emergency calling system suitable for VoIP The system incorporates location determination call routing and public safety answering point PSAP infrastructure NSIS Next steps in signaling Published Papers As part of the IETF NSIS working group we are contributing to a generic IP signaling protocol that separates the transport of the signaling from the application signaling e g QoS NAT traversal Our current work focus on the NSIS transport layer protocol called General Internet Messaging Protocol for Signaling GIMPS NSIS operation over IP tunnels and NSIS interaction with IP mobility and route change OpenVoIP OpenVoIP Published Papers OpenVoIP is an open peer to peer VoIP system deployed on PlanetLab Unlike OpenDHT where it was only possible to put get the data we allow non PlanetLab nodes to become part of our overlay OpenVoIP provides NAT traversal services using STUN TURN and ICE OpenVoIP also provides a GoogleMap Interface to check the health of the system PBS Signaling architecture for network traffic authorization Published Papers Permission Based Sending PBS is a signaling architecture for network traffic authorization This architecture aims to prevent Denial of Service DoS attacks and other forms of unauthorized traffic PBS exploits control plane signaling protocol architecture NSIS Signaling Layer Protocol and secure authorization permission for resource control SIMPLEstone Performance measurements for SIMPLE presence Published Papers SIMPLEstone is a benchmark for

    Original URL path: http://www.cs.columbia.edu/irt/projects (2016-02-17)
    Open archived version from archive

  • Internet Real Time Lab (IRT) - Software
    Students Visitors Alumni Post Docs Projects Publications Software Courses Student Projects Project List News and Events Sponsors Useful Links Contact Software CINEMA Columbia Internet Extensible Multimedia Architecture CINEMA is a SIP based multimedia collaboration suite Copyright c 1998 2016 Internet

    Original URL path: http://www.cs.columbia.edu/irt/softwareprojects (2016-02-17)
    Open archived version from archive

  • Internet Real Time Lab (IRT) - Courses
    open source software an aspect of VoIP prepare a survey talk on a topic related to VoIP COMS E6181 Advanced Internet Services Spring 2008 In depth survey of protocols and algorithms needed to transport multimedia information across the Internet including audio and video encoding multicast quality of service voice over IP streaming media and peer to peer multimedia systems Includes a semester long programming project COMS 4118 Operating Systems I

    Original URL path: http://www.cs.columbia.edu/irt/courses (2016-02-17)
    Open archived version from archive

  • Internet Real Time Lab (IRT) - Student Projects
    level projects Please see the FAQ for common questions What projects are available See list on menu on right hand side Students will be assigned PhD mentors to help with your project They are your primary source of help but you can always contact me in case of difficulties Source code for projects related to RTP RTSP and SIP can be found via CVS You will be given access as needed after providing your CS account name or a user name Unix encrypted password combination Most of the programming projects need a computer science account You can apply for a CS computer account on line You will not have to pay if you are doing this project under the supervision of Prof Schulzrinne How to register for the project Undergraduate students should first enroll in 3998 then 4901 and then 6901 Graduate students typically enroll in 6901 It is possible to enroll in the spring or fall for a two semester project covering the summer semester At most 3 points of W3998 can be counted towards the CS degree Similarly at most 3 points of W4901 can be counted COMS E6901 008 Course COMS E6901 008 Projects in Computer Science Section 008 1 12 pts Credit Flexible One credit hours requires 3 hours week of time commitment Prerequisite Please apply to instructor by sending a short resume including earlier projects completed and a list of courses taken recently with grades received Include a short code sample W3998 008 Course Projects in Computer Science Credit Flexible 0 3 One credit hours requires 3 hours week of time commitment Call Number Summer 1999 86146 Spring 2002 95956 W4901 008 Course Projects in Computer Science Credit Flexible 0 3 One credit hours requires 3 hours week of time commitment ELEN 6001 016 Fall and 6002 016 Spring Course Advanced Projects Credit Flexible 0 6 One credit hours requires 3 hours week of time commitment ELEN 9001 016 Fall and 9002 016 Spring Course Research II Credit Flexible 0 3 One credit hours requires 3 hours week of time commitment Call Number Spring 2002 How am I graded You will have to finish certain requirements as part of the course to get your grades Follow the checklist and discuss it with your mentor Projects must conform to the coding guidelines All projects require the writing of HTML documentation and report using the IEEE proceedings format LaTeX depending on the project Note Project reports produced by Microsoft Word are not acceptable even if exported to HTML All project must have a web manual page describing the program s use For C C projects please create executables for at least one of the standard platforms Linux MacOS FreeBSD Solaris or Windows NT 2000 Projects must be packaged as a tar file with a README file containing installation instructions that clearly identifies any other hardware and software needed As part of the demo you will be asked to unpack and install the software If your project enhances

    Original URL path: http://www.cs.columbia.edu/irt/studentprojects (2016-02-17)
    Open archived version from archive

  • Internet Real Time Lab (IRT) - News and Events
    Spring 2012 May 7 Jae Woo Lee passed his PhD thesis defense on Towards a Common System Architecture for Dynamically Deploying Network Services in Routers and End Hosts Summer 2011 August 26 Se Gi Hong defended his PhD thesis entitled Mitigating Network Service Disruptions in High bandwidth Intermittently Connected and Peer to Peer Networks Fall 2010 December 3 Kumiko passed her PhD proposal October 29 Salman Baset defended his PhD thesis entitled Protocol and System Design Reliability and Energy Efficiency in Peer to Peer Communication Systems Spring 2010 April 8 Charles Shen passed his PhD thesis defense on Scalable robust and secure signaling for next generation Internet multimedia services April 1 Ashutosh Dutta passed his PhD thesis defense on Systems Optimization for Mobility Management He is believed to have set a lab record of most pages and most publications in his thesis with 510 pages and 67 publications March 31 Alexander Fischer returns to Germany to complete his thesis after several months as a visitor at the IRT Lab Spring 2009 February 27 Erkki Harjula a visiting researcher from University of Oulu returned to Finland after several months at the IRT lab Fall 2007 December 10 13 CoNEXT 2007 conference

    Original URL path: http://www.cs.columbia.edu/irt/news (2016-02-17)
    Open archived version from archive

  • Internet Real Time Lab (IRT) - Sponsors
    Links Contact Sponsors 3Com AT T CATT Cisco Clarent Compaq DARPA Ericsson FAA FiberNet First Hand Technologies Fujitsu Hewlett Packard Huawei Hughes Network Systems IBM Research Labs Intel InterDigital Lucent Technologies Microsoft NTT NTT DoCoMo National Science Foundation NEC Nokia

    Original URL path: http://www.cs.columbia.edu/irt/sponsors (2016-02-17)
    Open archived version from archive