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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
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