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General Info & Program
The course is held jointly by Dr. Alessandro Villani and myself.
I will cover mostly the theoric/descriptive parts, while Alessandro
will take care of the labs.
The program is described on the official Faculty page.
You can download a
PDF version of the program if you want.
Don't be fooled by the fact that it is pretty similar to the
program of the academic year 2003/2004: we have twice as much the time
and we correspondingly do more material. The main difference is not in
the number of topics, but in the insight we gain on them.
Credits, Computer Science and Engineering
As you probably know this course is offered both to
Telecommunication Engineering and to Computer Science students.
For CS students the credits are 12, for TE students only 6. Moreover
CS students that have not changed their study plan will still have 6 credits.
What a mess!! ... and we have to cope with it.
Let's see if I can make some order in this all.
- Computer Science students with the new study plan
Easy. Just follow all the course, the lab, do the project,
take the exam and you have the 12 credits.
- Telecommunications Engineering students
Your Area Council decided that the Lab is redundant, thus
you are not required to follow it, nor to take the
corresponding part of the exam; however, if you want to come
in the lab to learn what we do, you're more than welcome.
Additionally, since you are supposed to know much more than me
on the propagation, modulation, coding, and PHY layer in general,
the relative part of the program was deemed irrelevant, which means that
you will have to know it at the exam, but the credits do not count.
In other words, the relevant part of the course is all the theory
that is not concerned with the physical layer.
All in all will be roughly 50 hours in class, but unfortunately
I cannot put them all at the beginning or at the end, since there is the lab
and I have to dedicate 8-10 hours to the physical layer before
doing the GSM and UMTS networks, which means during march.
A consequence of the lab redundancy is that your project should not
have to do with "hands-on" problems ... but we can derogate and find
agreements if you have specific interests.
- Computer Science students with the OLD study plan
Just follow the material and rules of the year 2003/2004. Unfortunately,
it is not possible to give you the option to follow just 50 hours
and not the other 50, since the program is mixed up. So, if you're in this
situation and you plan to follow the course this year, please,
tell me and we find a solution.
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Timetable & Rooms
During the first two weeks we'll do only "theory"
1-st and 2-nd week timetable,
while all other weeks we'll have the lab on fridays.
other weeks timetable.
Labs are mandatory for CS students while they can be skipped by TE students, who, as
already said, are welcome to participate if they're interested.
CS students will be required to produce a summary of one of the labs
(we'll assign them "on the flight") as a useful exercise to learn
writing in preparation of the project for the exam.
I'll try to avoid completely references to the labs in the theory, so that TE
students will not be penalized.
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Teaching Material
We don't have any "official textbook." Here are the printouts of the
slides I use to follow a predefined course while teaching. They are by
no means a textbook and I will spend maybe half a lesson on a single
slide and ... slide over the next 10 in 10 minutes. They are intended to
help you in scribbling notes, not to substitute the lessons.
- Introduction, general notions and reharsal of known concepts
- 802.11 Wireless LANs: PHY, MAC and access procedures.
This material is password protected.
Use the username and pwd given in class.
- Hiperlan I, and example of another possible MAC for WLANs
- 802.11e: introducing QoS in Wireless LANs
Use the username and pwd given in class.
- 802.11f: Inter Access Point Protocol for IEEE 802.11 Wireless Network
Use the username and pwd given in class.
- A primer for IP reharsal (in Italian), not really part
of the course, but can be useful if you have some "holes" in IP
basics.
- Mobile IP
- A first, short discussion of transmission and propagation issues
- An introduction to tepephone networks and voice encoding
- Cellular networks systems,
GSM (architecture, organization, physical and logical channels)
- GSM Logical Channel Mapping
- GPRS and EDGE
- UMTS, part one, from the basics to the MAC protocol
- UMTS, part two, RLC, RRC and some finel remarks
- Bluetooth and ZigBee
LAB material, slides, aditional pointers, Add-on material etc.
- WLAN basics and Avaya AP configuration
- AP Cisco 1200 Series configuration (with VLAN Examples)
- Radius workout and Ethereal Sniffer use
- Ethereal, Kismet and IAPP protocols
- Ad-Hoc networks and HostAP
- LinkSys: a Linux-based 802.11 AP; capturing traffic on a WLAN
- WEP, Airsnort and Cracking WEP codes
-
-
-
Standards web sites and other useful links for additional
details on Lab-related topics, arguments cited but not part of the cours
and not only (they are not "ordered"
following any criteria, just thrown in)
-
IEEE approved standard
- Avaya support site
Contains detailed description of Avaya products, software and
firmware downloads and updates
-
Avaya whitepapers See
note
-
Radius Standard IETF RFC 2865 (Remote Authentication
Dial-In Service)
-
Ethereal home page. Protocol analyzer with support for
many protocols including 802.11.
- 802.11f addres the inter-AP dialogue, i.e., the distribution service
functions defined in the 802.11 standard
IAPP draft
- LinkSys
source code
(needed for cross compiling new firmware for the WRT54G Wireless Router)
- Man-in-the-middle attacks in tunneled authentication protocols
A survey and description
- Airsnort
home page
(a tool to recover WEP keys)
- Open1x:
Open Source implementation of IEEE 802.1x
- FreeRADIUS
home page
(a GPL'd free RADIUS server)
- Italian introductory "dispense" on GSM PHY and planning by
Monica Visintin
(PDF file)
- X.25 and Frame Relay slides with LAP protocols
This material is password protected.
Use the username and pwd given in class.
Papers about WEP weaknesses.
A very recent (as of May 2005) Communciation Magazine special issue
on CDMA2000, the USA "UMTS". The papers are downloadable from
Digital Library and/or IEEE Xplore, thus you can read them only from
UniTn addresses.
Vol.43 Issue 4, April 2005 pointer
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Bibliography and additional material
Besides the books indicated at within the program, there are an enormous
number of publications covering, wireless networks or specifica aspects thereof.
Besides the obvious consideration that it is impossible to know (or even list!) them
all, many of them, specially concerning wireless LANs have to
problem to be either very inprecise (read: full of errors!), or very generic
(little information to be found), or very badly writtes so they are difficult to read.
The three problems are combined randomly in different books
I prefer to indicate here a few hadbooks that can be useful and
web sites that are easier (and cheaper!) to consult. However, for
web sites I cannot guarrantee that all the information is correct.
- 802.11 Handbook: A designer's Companion , Bob O'Hara and Al Petrick,
IEEE Press, 1999, is a reasonable booklet explaining the standard (1999 version)
in accessible language. Since the authors participated in the standard definition
it is reasonably correct and accurate. The authors maintain a
site
where additional (very little!) material is posted including a useful list of acronims.
- O'Reilly's books are generally very approximate, Italian translations are old and
inaccurate, but they are cheap and normally available very early
on the market.
- The Wi-Fi Alliance
Web site
provides useful information from the economic and marketing point of view.
The Wi-Fi Alliance is a nonprofit international association whose aim if
fostering 802.11 market by certifying the interoperability of WLAN products
based on IEEE 802.11 standars
- GSM World
is the official site of the GSM association, which includes
all major GSM operators in the world.
- The 3GPP and
The 3GPP2
are informal bodies that are fostering the introduction and
harmonization of UMTS (3GPP) and CDMA2000 (3GPP2): the USA equivalent of UMTS.
The standardization effort has practivally moved into these bodies and
ETSI as well as its USA couterparts as TIA accept the proposals without
significant modifications.
- Those interested in science and technical history
can start from this page
and browse its links; however, informations there a divulgative and unchecked, thus try to
accept them with critical spirit and double check them whenever seems strange or not
convincing.
- A reasonable
overview
of basic GSM systems (printable) was put on the web in
1999 by John Scourias of the University of Waterloo in Canada.
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Exams
The exam consists of two parts, and is structurally identical for
CS and TE students, what is changed is the program and the amount of work required.
The first part is a "Small Project," which can be related to the
laboratories (or around them, or similar), or can be a complilation
on a subject related to the course
(but not covered by the lessons).
The second part is an oral discussion concerning the
theory parts.
The Project can be completed at (almost) any time and the oral part
can be done after it, say within two weeks. The oral part cannot be done
before concluding the project.
Before taking the exam CS students need to have completed the summary
of the lab assigned to them. The summary will be corrected in order to help
improve writing skills for the short project layout; however,
the lab summary doesn't have any wheight in the final exam ... although
you cannot take the exam if you do not do it!
Projects proposals
Project themes and arguments will be proposed and discussed
during the labs and lessons, however,
if you have your own proposal we can consider togheter if it
is within the scope of the course.
I keep
here a page with all the available projects,
a short description of them, and the name (if any)
of who is doing the project.
Next Exams Sessions
- Monday June 20
- Monday July 18
- Thursday August 25
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Consulence
Additional clarifications, explanations, datails, etc. can be obtained
at any time during lesson or soon after.
Single/group consulence outside official lessons can be arranged
in my office with a simple mail; I avoid "official and fixed" receiving
hours because they are a waste of time for everybody.
Simple doubts can be submitted (and solved) via e-mail.
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White Papers
are technical documents not strictly related to the products that vendors
publish to foster their specific technical point of view of some
specific areas, e.g., network integration, WLAN evolution, etc.
They are written to look as written by an independend observer, though they're
obviously not, since they reflect the "technical vision" of the firm
and its marketing strategy.
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