Home

Final Program

Patrons

Committees

Registration

Directions / Area Links 

Call For Contributions 

 

Friday, August 18: Tutorials 

All information on the advance program is subject to change. 

Tutorial T1 8:30AM - 12:00PM

Optical Networking: A Practical Perspective

Ori Gerstel, Xros/Nortel

Description:

Optical networking technology has enjoyed tremendous success as the next generation high bandwidth transport choice for many carriers. In this tutorial we shall explore different aspects of this technology, from the enabling optical components to node and network architectures that are being developed for next generation systems. Specifically, the following topics will be discussed:
  • Enabling optical components and subsystems: demultiplexers, add/drop filters, amplifiers and optical switches.
  • Node architectures and functions: the line terminal, add/drop mux and optical cross-connect
  • Optical layer survivability: motivation, network architectures, fast protection schemes
  • How does this technology fit with other communication technologies such as SONET and IP?
  • Where are optical layer standards headed?

Required Background:

To be announced.

Speaker Biography:

Ornan (Ori) Gerstel received his B.A, M.Sc. and D.Sc. degrees from the Technion, Israel. After finishing his D.Sc. he has joined the Optical Network Systems Group at IBM T.J. Watson research center and has moved with the group to develop optical networking products with Tellabs Operations.There he served as the system and software architect for the Tellabs Optical Networking Group, building the TITAN 6100 metro DWDM product line.Recently he has left Tellabs to join Xros, a startup building all-optical cross-connects, which has been acquired by Nortel Networks.Ornan has served on the program committee of Infocom and OFC, and has published more than dozen journal papers, and a similar number of patents.He also gave several tutorials on the topic and served as a guest editor for a JSAC issue on optical networks, and as an editor of IEEE communications surveys journal.His research interests include network architecture, fault-tolerance and protection, and network design problems in optical networks.His email address is ori@ieee.org.


Tutorial T2 8:30AM - 12:00PM

Architectures and Protocols for IP Telephony

John Pickens, Com21

Description:

This tutorial covers requirements, architectures, and signaling/media-stream protocols for voice and telephony from the perspective of providing end-user features and services. Both centralized (IP based central office) and distributed (IP-based "PABX" and intelligent-phone) design paradigms will be covered. The technologies will be explored from the perspective of "last-mile" broadband access network design (performance, latency, authentication, privacy, services) and broadband residential gateway design (simple device control, smart services) with an emphasis on cable. The tutorial includes:
  • Voice/Telephony service and application overview
  • Telephony in broadband access network requirements (Cable, xDSL, fiber)
  • Centralized/hierarchial and distributed/peer softswitch call control paradigms
  • Voice transport over IP media stream (encoding, performance, protocols)
  • MGCP/MEGACO signaling protocols and Packetcable extensions
  • SIP signaling protocol and Packetcable extensions
  • Quality of Service (QoS) signaling protocols (MAC, RSVP, RSVP-extensions)
  • Provisioning and management protocols
  • Security protocols (authentication, privacy, integrity) for media stream and signaling
  • Call flows (MGCP, SIP)
  • Traffic engineering considerations

Not covered (surveyed only): PSTN-to-PSTN IP-based trunking bypass protocols, Inter-domain switch-to-switch signaling protocols, FDM circuit switching, H.323, VTOA (AALx), V5.2, GR303, 5ESS (et al).

Required Background:

A good understanding of IP and IP-based systems and protocols. A basic understanding of telephony would be helpful.

Speaker Biography:

Vice President of Technology and Chief Technical Officer, Dr.Pickens has been with Com21 since November 1996. He served as the vendor editor of the CableLabs PacketCable Architecture group. He has been involved with numerous voice over cable and voice over IP activities. Prior to joining Com21, Dr. Pickens was chief technology officer for SBE Network Systems where he was responsible for product development and management of SBE's technology programs. Prior to his work at SBE, Dr. Pickens was an entrepreneur in residence at the Mayfield Fund and held several engineering and architecture management positions at 3Com Corporation. He received his Ph.D. in Electrical Engineering and Computer Science from the University of California, Santa Barbara.  


Tutorial T3 1:30PM - 5:00PM

Routing Lookups and Packet Classification: Theory and Practice

Pankaj Gupta, Stanford University

 Description:

In this tutorial, we will study the different forwarding lookup and packet classification mechanisms for high speed IP routers. Every router performs a forwarding decision on the destination address of each arriving packet to determine the next-hop routerthat the packet should be forwarded to next. Optionally, an advanced router, such as a firewall or a router providing differentiated services, may need to base the lookup decisionon multiple fields of the packet header -- for instance, source and destination IP addresses, protocol, port numbers etc.This generalization of lookups is called classification and enables advanced services such as filtering, rate-limiting, traffic-shaping and differentiated services in the Internet.

The tutorial will explain both the theory and practical aspects of lookup and classification algorithms. It will provide a comparative evaluation of these techniques, an overview of some of the commonly used techniques in industry, and comment on their suitability under different design tradeoff choices.

Required Background:

A good understanding of IP addressing architecture.

Speaker Biography:

Pankaj Gupta is a doctoral candidate in the Department of Computer Science at Stanford University. He researches high speed switching and routing architectures.

Pankaj Gupta, Stanford University, pankaj@cs.stanford.edu 


Tutorial T4 1:30PM - 5:00PM

Ultra-Wideband Wireless Technology and indoor Propagation Issues

Paul Withington, Time-Domain

Description:

Ultra-Wideband (UWB) has received significant attention due to the FCC's Notice of Proposed Rulemaking on UWB, as well as a growing base of technical literature. This tutorial will discuss the fundamentals of Time Modulated Ultra-wideband (TM-UWB), describe TM-UWB modulation techniques, discuss recently developed empirically derived UWB channel models, and demonstrate an integrated TM-UWB data communications, radar, and impulse channel sounding system.

TM-UWB transmits short pulses that are randomly or pseudo-randomly generated in time (i.e., "time coded") with a relatively high pulse repetition frequency. The technology is characterized by

  • Extremely low power spectral density
  • Center Frequencies typically between 650MHz and 5 GHz
  • Multi-mile ranges with sub-milliwatt average power levels (even with low gain antennas)
  • Excellent immunity to interference from other radio systems

Possible applications of the technology include

  • In-building communication Systems
  • Personal Communications Systems
  • Highspeed LAN
  • Home Networks
  • Cordless phones
  • Security Sensors, RF tags
  • Local high precision positioning systems

TM-UWB receivers use coherent correlating receivers to convert RF straight to baseband. This technique requires extremely precise time synchronization, typically better than 20 picosecond RMS. As a result of this timing capability it is possible to measure the time-of-flight of TM-UWB signals to within a few picoseconds. Thus, TM-UWB communications systems will also allow sub-centimeter precision range measurement.

This talk will focus (1) on measured characteristics of TM-UWB, including propagation in several environments and the impact of TM-UWB signals on other systems, e.g., GPS receivers and (2) recent demonstrations of TM-UWB technology.

Required Background:

To be announced.

Speaker Biography:

Vice President and Senior Technologist - Telecom Products. Previously, Mr. Withington served as a strategist for BellSouth's Worldwide Wireless Strategy Group and as a senior member of The Partridge Group, a Washington, D.C. based management consulting firm specializing in mobile telephone businesses. Mr. Withington joined Pulson as its Vice President and technical spokesperson and joined the Company upon the Company's acquisition of Pulson. Mr. Withington is also a retired commander in the U.S. Navy Reserve. Currently, Mr. Withington manages the Company's Telecom Commercial Products Division. Mr. Withington graduated from Harvard University in 1975 with a B.A. in Applied Sciences and received an M.S. in Operations Research from George Washington University in 1984.  

For more information mail info@hoti.org


Please send any web page comments to webmaster@hoti.org