Wireless Systems

Knowledge and understanding: The objective of the course is to provide advanced knowledge that enables the student to understand the theoretical mechanisms underlying a distributed communication protocol with wireless connections.

Applying knowledge and understanding: The student will acquire the necessary skills to design a wireless communication network, defining the appropriate tools to incentivize collaboration while optimizing the utilization of shared resources. In this regard, part of the course will consist of laboratory sessions focused on using the NS3 simulator to evaluate network performance.

Making judgements: Through concrete examples of design errors and/or limitations found in real-world protocols, the student will be able to independently develop their own solutions in order to overcome the classic constraints imposed by scalability in wireless systems.

Communication skills: The student will acquire further communication skills and expressive appropriateness in the use of technical language within the general context of network protocols and wireless systems.

Learning skills: The course aims to provide the student with the necessary theoretical and practical methodologies to independently face and resolve new issues that may arise during the typical design activities of a Master’s Degree graduate.

Classroom lessons

Laboratory lessons

Note: should teaching be carried out in mixed mode or remotely, it may be necessary to introduce changes with respect to previous statements, in line with the programme planned and outlined in the syllabus.
Learning assessment may also be carried out on line, should the conditions require it.

For a complete comprehension of the arguments, we suggest a good knowledge on Operating Systems, Distributed Systems and Computer Networks

Lessons attendance reflects the requirements and limitations set out in the LM-18 Study Regulation for the current cohort and in the University Teaching Regulations.

Wireless networks

Wired vs wireless
Implicit limitation of the wireless system
New Application in wireless
Taxonomy
Introduction to phisical layer: channel access problem
The CSMA/CA solution
IEEE 802.11: BSS, ESS, IBSS structures
Structured and AdHoc Networks
Phisical and virtual carrier sensing
The IEEE 802.11 standard
The DCF
MACAW, NAV, RTS/CTS, DS
Temporarization in 802.11: SIFS, PIFS, DIFS, EIFS
The PCF
Structure of the IEEE802.11 frames
MAC Addresses
Case of study: Theoretical performance of a TCP transmission over IEEE802.11
Routing protocols
Mobile IP
Routing protocols in MaNet: 

• DSR,
• AODV,
• DSDV
• LRA

TCP: Congestion control
TCP variations

• Tahoe
• Reno
• New Reno
• Vegas
• SACK
• Westwood
• Veno
• BIC
  

802.11 Wireless Networks the Definitive Guide