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Displaying 1-50 out of 64 total
Guest Editor's Introduction: Service for Telecom Version 2
Found in: IEEE Internet Computing
By Henning Schulzrinne
Issue Date:May 1999
pp. 40-43
No summary available.
 
Measurement and Analysis of the VoIP Capacity in IEEE 802.11 WLAN
Found in: IEEE Transactions on Mobile Computing
By Sangho Shin, Henning Schulzrinne
Issue Date:September 2009
pp. 1265-1279
We measured the capacity for VoIP traffic in an IEEE 802.11b wireless testbed and compared it with the theoretical capacity and our simulation results. We identified factors that have been commonly overlooked in past studies but affect experiments and simu...
 
Building Open Programmable Multimedia Networks
Found in: IEEE Multimedia
By Andrew T. Campbell, Aurel A. Lazar, Henning Schulzrinne, Rolf Stadler
Issue Date:January 1997
pp. 77-82
No abstract avialable.
 
Cloud Support for Latency-Sensitive Telephony Applications
Found in: 2013 IEEE 5th International Conference on Cloud Computing Technology and Science (CloudCom)
By Jong Yul Kim,Henning Schulzrinne
Issue Date:December 2013
pp. 421-426
Cloud computing is great for scaling applications but the latency in a guest VM can be unpredictable due to resource contention between neighbors. For telephony applications, which are latency-sensitive, we propose a system to monitor telephony server late...
 
MOSAIC: Stateless mobility for HTTP-based applications
Found in: 2012 IEEE 8th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob)
By Wonsang Song,Georg Hampel,Anil Rana,Thierry Klein,Henning Schulzrinne
Issue Date:October 2012
pp. 69-76
We present a mobility solution for stateless applications, where the mobile host can change its IP address as well as the content servers used by ongoing client sessions. This allows content retrieval to always use the locally optimal source when the host ...
 
Bridging Communications and the Physical World
Found in: IEEE Internet Computing
By Omer Boyaci,Victoria Beltran Martinez,Henning Schulzrinne
Issue Date:March 2012
pp. 35-43
Sense Everything, Control Everything (SECE) is an event-driven system that lets nontechnical users create services that combine communication, location, social networks, presence, calendaring, and physical devices such as sensors and actuators. SECE combin...
 
User-transparent reconfiguration method for self-organizing IP multimedia subsystem
Found in: Computers and Communications, IEEE Symposium on
By S. Komorita,H. Yokota,C. Makaya,S. Das,D. Chee,F. J. Lin,Ashutosh Dutta,Henning Schulzrinne
Issue Date:July 2011
pp. 1137-1144
The NGN (Next Generation Network), which can provide advanced multimedia services over an all-IP based network, has been the subject of considerable attention for several years. While there have been tremendous efforts to develop its architecture and proto...
 
vDelay: A Tool to Measure Capture-to-Display Latency and Frame Rate
Found in: Multimedia, International Symposium on
By Omer Boyaci, Andrea Forte, Salman Abdul Baset, Henning Schulzrinne
Issue Date:December 2009
pp. 194-200
We present vDelay, a tool for measuring the capture-to-display latency (CDL) and frame-rate of real-time video applications such as video chat and conferencing. vDelay allows measuring CDL and frame-rate without modifying the source code of these applicati...
 
Performance of Video-Chat Applications under Congestion
Found in: Multimedia, International Symposium on
By Omer Boyaci, Andrea G. Forte, Henning Schulzrinne
Issue Date:December 2009
pp. 213-218
We study the performance of four popular IM clients focusing our attention on video-chat. In particular, we analyze how Skype, Windows Live Messenger, Eyebeam and X-Lite react to changes in available bandwidth, presence of HTTP and bit-torrent traffic and ...
 
Demonstration of vDelay: A Tool to Measure Capture-to-Display Latency and Frame Rate
Found in: Multimedia, International Symposium on
By Omer Boyaci, Andrea Forte, Salman Abdul Baset, Henning Schulzrinne
Issue Date:December 2009
pp. 444-445
We present vDelay, a tool for measuring the capture-to-display latency (CDL) and frame-rate of real-time video applications such as video chat and conferencing. vDelay allows measuring CDL and frame-rate without modifying the source code of these applicati...
 
Message from the general chairs
Found in: 2009 17th IEEE International Conference on Network Protocols. ICNP 2009
By Henning Schulzrinne,K. K. Ramakrishnan
Issue Date:October 2009
pp. 1-2
Welcome to the ICNP 2009, the 17th annual IEEE International Conference on Network Protocols and welcome to the Princeton area in New Jersey. ICNP is a conference covering all aspects of network protocols, including design, analysis, specification, verific...
 
Realization of IEEE 802.21 services and preauthentication framework
Found in: Testbeds and Research Infrastructures for the Development of Networks & Communities, International Conference on
By Miriam Tauil, Ashutosh Dutta, Yuu-Heng Cheng, Subir Das, Donald Baker, Maya Yajnik, David Famolari, Yoshihiro Ohba, Victor Fajardo, Kenichi Taniuchi, Henning Schulzrinne
Issue Date:April 2009
pp. 1-10
Providing users of multi-interface devices the ability to roam between different access networks is becoming a key requirement for service providers. The availability of multiple mobile broadband access technologies together with increasing use of real tim...
 
BASS Application Sharing System
Found in: Multimedia, International Symposium on
By Omer Boyaci, Henning Schulzrinne
Issue Date:December 2008
pp. 432-439
Application and desktop sharing allows sharing of any application with one or more people over the Internet. The participants receive the screen-view of the shared application from the server. Their mouse and keyboard events are delivered and regenerated a...
 
7DS - A Modular Platform to Develop Mobile Disruption-Tolerant Applications
Found in: Second International Conference on Next Generation Mobile Applications, Services, and Technologies. NGMAST 2008
By Arezu Moghadam,Suman Srinivasan,Henning Schulzrinne
Issue Date:September 2008
pp. 177-183
Due to the low density of mobile devices or their limits in wireless radio range, a continuous network connectivity cannot be sustained in mobile disruption-tolerant networks. In these networks traditional networking models relying on end-to-end communicat...
 
SIP and 802.21 for Service Mobility and Pro-active Authentication
Found in: Communication Networks and Services Research, Annual Conference on
By Greco Polito Silvana, Henning Schulzrinne
Issue Date:May 2008
pp. 176-182
The IEEE 802.21 working group is designing a framework to facilitate handover between heterogeneous networks allowing mobile terminals to get information about nearby networks before performing the handover. The design of a transport protocol for 802.21 si...
 
Experiences in building a multi-university testbed for research in multimedia communications
Found in: Parallel and Distributed Processing Symposium, International
By Ram Dantu, Henning Schulzrinne, Paul Sroufe
Issue Date:April 2008
pp. 1-5
The next generation Internet needs to support multimedia services such as Voice/Video over IP (VoIP) and IP-based television (IPTV) and media distribution. The goal of the project is to develop a testbed for understanding and analysis of vulnerabilities of...
 
Middleware 2007 Works in Progress
Found in: IEEE Distributed Systems Online
By Ed Curry, Knarig Arabshian, Henning Schulzrinne, Mohammed Jubaer Arif, Shanika Karunasekera, Santosh Kulkarni, Roberto Speicys Cardoso, Sonia Ben-Mokhtar, Valérie Issarny, Aitor Urbieta, Manos Kapritsos, Peter Triantafillou, Juan López Rubio,
Issue Date:November 2007
pp. 3
The 8th International Middleware Conference, taking place late November in Newport Beach, CA, aims at being the premier conference on middleware research and technology in 2007. The conference covers the design, implementation, deployment, and evaluation o...
 
Distributed Delay Estimation and Call Admission Control in IEEE 802.11 WLANs
Found in: Network Protocols, IEEE International Conference on
By Kenta Yasukawa, Andrea G. Forte, Henning Schulzrinne
Issue Date:October 2007
pp. 334-335
No summary available.
 
Cooperation Between Stations in Wireless Networks
Found in: Network Protocols, IEEE International Conference on
By Andrea G. Forte, Henning Schulzrinne
Issue Date:October 2007
pp. 31-40
In a wireless network, mobile nodes (MNs) repeatedly perform tasks such as layer 2 (L2) handoff, layer 3 (L3) handoff and authentication. These tasks are critical, particularly for real-time applications such as VoIP. We propose a novel approach, namely Co...
 
Localization for Intermittently Connected Ad Hoc Networks
Found in: Pervasive Computing and Communications Workshops, IEEE International Conference on
By Wing Ho Yuen, Henning Schulzrinne
Issue Date:March 2007
pp. 86-96
We consider localization for intermittently connected networks. Traditional localization approaches rely on network infrastructure such as access points (AP) as reference nodes or anchors, and do not work well when infrastructure is sparse. We propose a ne...
 
A First Step Towards Call Survivability in Cellular Networks
Found in: Local Computer Networks, Annual IEEE Conference on
By Zahid Anwar, William Yurcik, Salman Baset, Henning Schulzrinne, Roy H. Campbell
Issue Date:November 2005
pp. 501-502
<p>Despite recent advancements in cellular phone network infrastructure, survivability of the calls is still an open issue. Important business calls and tele-conferences cannot benefit from mobility because landlines are preferred owing to their reli...
 
GloServ: Global Service Discovery Architecture
Found in: Mobile and Ubiquitous Systems, Annual International Conference on
By Knarig Arabshian, Henning Schulzrinne
Issue Date:August 2004
pp. 319-325
The medical industry is transitioning to Internet-based communication as the field of telemedicine broadens to include medical event monitoring systems. A medical event monitor generates different types of messages and alerts for healthcare providers, inst...
 
Client Clustering for Traffic and Location Estimation
Found in: Distributed Computing Systems, International Conference on
By Lisa Amini, Henning Schulzrinne
Issue Date:March 2004
pp. 730-737
Resource management mechanisms for large-scale, globally distributed network services need to assign groups of clients to servers according to network location and expected load generated by these clients. Current proposals address network location and tra...
 
Multifunctional ICMP Messages for e-Commerce
Found in: e-Technology, e-Commerce, and e-Services, IEEE International Conference on
By Bao-Tung Wang, Henning Schulzrinne
Issue Date:March 2004
pp. 325-332
Denial-of-Service (DoS) attacks has been threatening our evolving eCommerce and eServices on the Internet for years. Regarding today?s stateless Internet environment, researchers have designed various schemes carrying additional information to providing in...
 
Auction or Tâtonnement - Finding Congestion Prices for Adaptive Applications
Found in: Network Protocols, IEEE International Conference on
By Xin Wang, Henning Schulzrinne
Issue Date:November 2002
pp. 198
No summary available.
   
Providing Emergency Services in Internet Telephony
Found in: IEEE Internet Computing
By Henning Schulzrinne, Knarig Arabshian
Issue Date:May 2002
pp. 39-47
<p>A SIP-based architecture for emergency calling and notification systems could increase speed, scalability, and functionality in communication services.</p>
 
Integrating Internet Telephony Services
Found in: IEEE Internet Computing
By Wenyu Jiang, Jonathan Lennox, Sankaran Narayanan, Henning Schulzrinne, Kundan Singh, Xiaotao Wu
Issue Date:May 2002
pp. 64-72
<p>The Cinema system uses a SIP-based architecture to integrate Internet telephony services with an existing PBX infrastructure.</p>
 
The Adaptive Load Service (ALS): An ABR-Like Service for the Internet
Found in: Computers and Communications, IEEE Symposium on
By Dorgham Sisalem, Henning Schulzrinne
Issue Date:July 2000
pp. 482
In this paper, we present a novel approach for realizing adaptive QoS control in the Internet called the adaptive load service (ALS). ALS was designed in a similar fashion to the available bit rate service (ABR) proposed for ATM. That is, the senders trans...
 
Programming Internet Telephony Services
Found in: IEEE Internet Computing
By Jonathan Rosenberg, Jonathan Lennox, Henning Schulzrinne
Issue Date:May 1999
pp. 63-72
<p>Programming new Internet telephony services requires decisions regarding such things as where the code executes and how it interfaces with network protocols. The authors propose a CGI solution for trusted user/developers and the Call Processing La...
 
From POTS to PANS: A Commentary on the Evolution to Internet Telephony
Found in: IEEE Internet Computing
By Christos A. Polyzois, K. Hal Purdy, Ping-Fai Yang, David Shrader, Henry Sinnreich, François Ménard, Henning Schulzrinne
Issue Date:May 1999
pp. 83-91
<p>The central assumption of the plain old telephone service (POTS) was network-based computing power and dumb end systems. Implementing the pretty amazing new services (PANS) of IP-based telephony requires a shift in services at the network perimete...
 
Systems Modeling for IP-Based Handoff Using Timed Petri Nets
Found in: Hawaii International Conference on System Sciences
By Ashutosh Dutta, Bryan Lyles, Henning Schulzrinne, Jiacun Wang
Issue Date:January 2009
pp. 1-10
The mechanisms and design principles needed for achieving optimized handoff for mobile Internet services are poorly understood and need better analysis. This paper contributes to the general theory of optimized handoff and addresses the need for a formal m...
   
Network-Layer Assisted Mechanism to Optimize Authentication Delay during Handoff in 802.11 Networks
Found in: Mobile and Ubiquitous Systems, Annual International Conference on
By Rafa M. Lopez, Ashutosh Dutta, Yoshihiro Ohba, Henning Schulzrinne, Antonio F. Gomez Skarmeta
Issue Date:August 2007
pp. 1-8
Secured and seamless mobility across heterogeneous access networks needs optimization at all layers. Authentication and security association at the link layer is one of the major components of delay during handoff. We propose a network-layer assisted proac...
 
LoST: A Protocol for Mapping Geographic Locations to Public Safety Answering Points
Found in: Performance, Computing, and Communications Conference, 2002. 21st IEEE International
By Henning Schulzrinne, Hannes Tschofenig, Andrew Newton, Ted Hardie
Issue Date:April 2007
pp. 606-611
Public Safety Answering Points (PSAPs) serve limited geographic areas, so emergency callers must be directed to the most appropriate PSAP. As part of the overall Internet Engineering Task Force (IETF) emergency services architecture, we have developed a ne...
 
Protecting First-Level Responder Resources in an IP-based Emergency Services Architecture
Found in: Performance, Computing, and Communications Conference, 2002. 21st IEEE International
By Hannes Tschofenig, Henning Schulzrinne, Murugaraj Shanmugam, Andrew Newton
Issue Date:April 2007
pp. 626-631
Recently, there has been increased interest, shown by the research community and by industry fora, to enable emergency services for voice-over-IP based architectures. In order to provide emergency services functionality over the Internet, several aspects l...
 
MPA assisted Optimized Proactive Handoff Scheme
Found in: Mobile and Ubiquitous Systems, Annual International Conference on
By Ashutosh Dutta, Tao Zhang, Yopshihiro Ohba, Kenichi Taniuchi, Henning Schulzrinne
Issue Date:July 2005
pp. 155-165
<p>In order to support session-based real-time communications in a highly mobile environment it is desirable to limit end-to-end delay, jitter and packet loss at certain threshold level. This paper describe a framework media-independent Pre-Authentic...
 
A markov routing algorithm for mobile DTNs based on spatio-temporal modeling of human movement data
Found in: Proceedings of the 14th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems (MSWiM '11)
By Arezu Moghadam, Henning Schulzrinne, Tony Jebara
Issue Date:October 2011
pp. 323-332
Store-carry-forward communication, which is set as the heart of all routing protocols for mobile disruption-tolerant networks (DTNs), exploits nodes' mobility to bring messages closer to their destinations by exchanging messages across mobile nodes when th...
     
NetServ: dynamically deploying in-network services
Found in: Proceedings of the 2009 workshop on Re-architecting the internet (ReArch '09)
By Ashiq Khan, Eric Liu, Henning Schulzrinne, Jae Woo Lee, Michael Kester, Srini Seetharaman, Suman Ramkumar Srinivasan, Volker Hilt
Issue Date:December 2009
pp. 37-42
We present NetServ, an extensible architecture for core network services for the next generation Internet. The functions and resources available on a network node are broken up into small and reusable building blocks. A new core network service is implemen...
     
Using conference servers for sip-based vertical handoff between ip and cellular networks
Found in: Proceedings of the 6th ACM international symposium on Mobility management and wireless access (MobiWac '08)
By Andrea G. Forte, Arpit Mehta, Henning Schulzrinne
Issue Date:October 2008
pp. 144-148
The Session Initiation Protocol (SIP) is the preferred signaling protocol for creating and terminating multimedia sessions in an IP network. Also, voice over IP is becoming the favored means of voice communication mainly because of its low cost when compar...
     
The delay-friendliness of TCP
Found in: Proceedings of the 2008 ACM SIGMETRICS international conference on Measurement and modeling of computer systems (SIGMETRICS '08)
By Dan Rubenstein, Eli Brosh, Henning Schulzrinne, Salman Abdul Baset
Issue Date:June 2008
pp. 305-305
TCP has traditionally been considered unfriendly for real-time applications. Nonetheless, popular applications such as Skype use TCP since UDP packets cannot pass through many NATs and firewalls. Motivated by this observation, we study the delay performanc...
     
Application and desktop sharing
Found in: Proceedings of the 2007 ACM CoNEXT conference (CoNEXT '07)
By Henning Schulzrinne, Omer Boyaci
Issue Date:December 2007
pp. 89-97
Application and desktop sharing allows sharing any application with one or more people over the Internet. The participants receive the screen-view of the shared application from the server. Their mouse and keyboard events are delivered and regenerated at t...
     
Bootstrapping large-scale DHT networks
Found in: Proceedings of the 2007 ACM CoNEXT conference (CoNEXT '07)
By Henning Schulzrinne, Jae Woo Lee, Wolfgang Kellerer, Zoran Despotovic
Issue Date:December 2007
pp. 89-97
The recent disruption of the Skype voice-over-IP system, triggered by a massive reboot of the hosts around the world, brought to light the importance of efficient bootstrapping in a large-scale peer-to-peer network. Thus far, the problem of bootstrapping a...
     
BonSwing: A GUI framework for ad-hoc applications using service discovery
Found in: Proceedings of the 2007 ACM CoNEXT conference (CoNEXT '07)
By Henning Schulzrinne, Suman Srinivasan
Issue Date:December 2007
pp. 89-97
In typical single-link 802.11 ad-hoc networks, devices often move from one network to the next, forming transitory associations without a fixed support infrastructure. The state in this network frequently changes due to node transitions. In such a scenario...
     
Combining ontology queries with key word search in the GloServ service discovery system
Found in: Proceedings of the 8th ACM/IFIP/USENIX international conference on Middleware (Middleware '07)
By Henning Schulzrinne, Knarig Arabshian
Issue Date:November 2007
pp. 1-6
GloServ is a global service discovery system which aggregates different types of services in a globally distributed network. It improves on current service discovery systems by scaling across a globally distributed network and allowing intelligent querying...
     
Peer assisted VoD for set-top box based IP network
Found in: Proceedings of the 2007 workshop on Peer-to-peer streaming and IP-TV (P2P-TV '07)
By Henning Schulzrinne
Issue Date:August 2007
pp. 335-339
IP-enabled set-top boxes are becoming key devices in home entertainment networks. In addition to providing TV signals, STBs have been providing pay-per view service for a long time. But this service suffers from bandwidth requirements at the source server ...
     
Ubiquitous device personalization and use: The next generation of IP multimedia communications
Found in: ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)
By Henning Schulzrinne, Ron Shacham, Srisakul Thakolsri, Wolfgang Kellerer
Issue Date:May 2007
pp. 12-es
Service usage in emerging ubiquitous environments includes seamless and personalized usage of public and private devices discovered in the vicinity of a user. In our work, we describe an architecture for device discovery, device configuration, and the tran...
     
Understanding the behavior of TCP for real-time CBR workloads
Found in: Proceedings of the 2006 ACM CoNEXT conference (CoNEXT '06)
By Dan Rubenstein, Eli Brosh, Henning Schulzrinne, Salman A. Baset, Vishal Misra
Issue Date:December 2006
pp. 89-97
In this paper, we examine the feasibility of sending real-time CBR workloads over TCP. This is motivated by the friendliness of NATs and firewalls towards TCP as opposed to UDP as well as by recent improvements in Internet's bandwidth and loss rates. Tradi...
     
Improving layer 3 handoff delay in IEEE 802.11 wireless networks
Found in: Proceedings of the 2nd annual international workshop on Wireless internet (WICON '06)
By Andrea G. Forte, Henning Schulzrinne, Sangho Shin
Issue Date:August 2006
pp. 12-es
In this paper we will analyze the many components of a L3 hand-off and will introduce a novel algorithm for reducing the L3 hand-off time. We will introduce the concept of Temporary IP address (TEMP_IP) as a way to resume communication immediately after th...
     
Peer-to-peer internet telephony using SIP
Found in: Proceedings of the 15th international workshop on Network and operating systems support for digital audio and video (NOSSDAV '05)
By Henning Schulzrinne, Kundan Singh
Issue Date:June 2005
pp. 63-68
P2P systems inherently have high scalability, robustness and fault tolerance because there is no centralized server and the network self-organizes itself. This is achieved at the cost of higher latency for locating the resources of interest in the P2P over...
     
Location-based communication services
Found in: Proceedings of the 2004 ACM SIGMM workshop on Effective telepresence (ETP '04)
By Henning Schulzrinne, Kundan Singh, Matthew J. Mintz-Habib, Ron Shacham, Xiaotao Wu
Issue Date:October 2004
pp. 55-56
Our demo shows end-user-oriented location-based services based on application-layer, human understandable location descriptions.
     
Secure universal mobility for wireless internet
Found in: Proceedings of the 2nd ACM international workshop on Wireless mobile applications and services on WLAN hotspots (WMASH '04)
By Ashutosh Dutta, Henning Schulzrinne, Kenichi Taniuchi, Kensaku Fujimoto, Sunil Madhani, Tao Zhang, Yasuhiro Katsube, Yoshihiro Ohba
Issue Date:October 2004
pp. 71-80
The advent of the mobile wireless Internet has created the need for seamless and secure communication over heterogeneous access networks such as IEEE 802.11, WCDMA, cdma2000, and GPRS. An enterprise user desires to be reachable while outside one's enterpri...
     
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