Nomadic Communications - aa 2016-17

Corsi anni precedenti: bottom page

The course is held jointly with Dr. Francesco Gringoli.

I will cover mostly the theoric/descriptive parts, while Francesco will take care of the labs. The program is described on the official Faculty page. Labs are mandatory, part of the exam will be based on Lab reports. This year the labs will be centered on protocol design and manipulation on OpenFWWF-enabled devices.

OpenFWWF is a project that provides an easy and inexpensive platform to implement new Medium Access Control (MAC) mechanism, and it is a valid alternative to expensive ad-hoc platforms for protocol experiments in the ISM bands. The combination of OpenFWWF and b43 driver is a complete and cheap tool that makes testing of new MAC easy achievable. Francesco Gringoli is the main developer of OpenFWWF.

Bill Board

  • Wednesday May 17: Seminar on Wireless Mesh Networks 2-4 PM in the lab
  • Monday April 3, two hours of theory instead of labs today at 2 PM in the lab class
  • The course will start on Monday February 27


We begin the course with a (short) rush on theory, in order to have enough knowledge of Wireless Networks and 802.11 systems before we start the Labs. This means that the first week we have 4 hours of theory as follows:

  • Monday Feb. 27, 9:00-11:00 room A107
  • Monday Feb. 27, 14:00-16:00 Networking Teaching Labs at level -2 in Povo 2; to be confirmed

March 6 we start the regular calendar

  • Theory: Mondays 9:00-11:00 room A107
  • Labs
    • Mondays 14:00-18:00, Networking Teaching Labs at level -2 in Povo 2.
      These are the "official hours" in calendar for the lab. Francesco Gringoli will normally be present, will explain the laboratory topic, help you setup experiments and answer all questions. I will also be there sometimes.
    • Wednesdays 14:00-18:00, Networking Teaching Labs at level -2 in Povo 2.
      The lab is reserved for you to complete experiments, play with devices, start writing reports. Me or Francesco may drop-by from time to time, but our presence is not guaranteed. You will have to take the lab keys and responsibility on the devices.


The formal exams dates during the summer will be defined later during the course.

You have to subscribe via ESSE3 when you want to take the exam, however the actual date of the exam is free, you just have to take an appointment with me. I strongly encourage groups to take the oral together, but there is no formal requirement on this.

The oral can be taken when the lab reports are delivered in their final form, but you have to allow me 3-4 days minimum to correct the reports.

Labs Organization

This year the labs are centered on actual impementation and design of MAC protocols on embedded Linux devices featuring the OpenFWWF platform.

OpenFWWF is a reverse-engineered platform that provides an easy and inexpensive platform to implement new Medium Access Control (MAC) mechanisms and protocols, and is a valid alternative to simulations and expensive ad-hoc platforms. The combination of OpenFWWF and b43 driver is a complete and cheap tool that makes testing of new MAC easy achievable, which let us run true lab work on nomadic systems and appreciate differences between design chioces and various options in wireless protocol design.

Labs are best done in groups. Groups of three are the best, but two or even singles can be accepted. More than three the work bocomes too dispersive.

Here is a template and LaTeX style to write decent reports, with some hints on the organization.

Teaching and Support 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 ... surf over the next 10 in 10 minutes. They are intended to help you in scribbling notes, not to substitute the lessons. They are normally posted before the lesson, but sometimes they are modified to improve them also after discussion in class, in this case they are marked with the date of the modification. If you want to have an idea of the whole material you can check the material of the past years, but I normally change part of the course, so do not entirely rely on old material.

  • Introduction, general notions and rehearsal of known concepts: MAC protocols and protocol architectures.
  • 802.11: The WLAN standard. Generalities, the base access protocol and the different PHY layers.
  • 802.11e: Changing the MAC to enchance fairness and performance, and differentiate services.
  • 802.11n/ac: Using Space diversity to enchance capacity and resilience.
    • PDF - slides
    • Cisco whitepaper introducing its own 802.11ac products, obviously biased, but with interesting details and comparisons
  • Vehicular Networks by Michele Segata


Additional Useful links

Official WebSite of OpenFWWF

Academic Years