Wireless and mobile networks

Quadrimestre 4 -

General course description

Laptops, cell phones and PDAs as well as multimedia "communicators" are ICT vectors with the highest potential growth. The use of these increasingly powerful terminals requires a wireless connections to all network types (data, telephone, TV/video,...) when moving around as well as ever increased debits and services not offered by classical radioelectric networks. Ambitious projects (IMT2000, UMTS) settin gup personal and universal communication services are being deployed at land, sky and satellite levels. This course highlights the market stakes for the wireless networks such as WPAN (Wireless Personal Area Network), WLAN (Wirelss LAN/MAN), WWAN (Wireless WAN) and the Mobile Internet/Intranet.

The laboratory sessions aim at dealing with a wireless technology WLAM (822.11b). This approach takes place in a twofold learning context: hands-on setting up and implementation of a wireless network prototype, devising a technical tender defining the general architecture of a wireless LAN within ESI. The sessions adopt the form of an IT project in network systems.

Learning basic skills

  • Introduction to networks and telecommunications
  • Signal and transmission
  • Protocols and network models
  • LAN technologies: hubs, switches and cabling: Ethernet 10/100, series TCP/IP (DNS, DHCP), asynchronous communications
  • Windows systems and network management (NT et 2000) on TCP/IP

Course Aims

Course: understand the various users' needs, the different issues faced by wireless and mobile network providers and manufacturers. To understand the different technical solutions available today and tomorrow on the market in several application fields. To be able to devise technical tenders to set up "wireless" extensions in existing networks as well as to design the architecture of new networks with the products available on the market.

Laboratory: going through the different phases of a wireless technological integration: analysis of the needs and solutions, prototyping, implementation and tests, management of a wireless network prototype. Writing up a final report.

Course Outline

1. General presentation

  • Content and aim of the course
  • This course in the curriculum
  • Networks: classification
  • Different approach angles
  • Practical aspects
  • Expectations

2. Wireless networks

  • Different technological evolutions
  • IT industry
  • Telecommunications industry
  • Audiovisual industry
  • Allying different concepts: information, communication and processing
  • The different networks: IT and others

3. Networks and architectures

  • Transmission: basics
  • Transmission systems: models
  • Standardisation: types
  • The expansion of the IT networks
  • The expansion of the mobile networks
  • The simplified model

4. The physical layer

  • Reminder: the transmission theory
  • Wireless transmission
  • Electromagnetic specter and sharing
  • Radioelectric transmissions: flaws
  • Wave transmissions: radio, microwave, infrared, luminous
  • Comparison and exploitation standards

5. Radiocommunication systems

  • Radio paging systems: Telindus High-tech Institute
  • Wireless telephony: CT-1, CT-2, CT-3 or DECT
  • Analog cell phones
  • Cell phones: AMPS and basic concepts
  • Digital cell phones: GSM, IS-54
  • The future of mobile radiocommunications with mobiles: UMTS, FPLMTS or IMT2000

6. Satellite communications

  • Satellite constellation: Iridium, GlobalStar
  • Satellites or optical fibres?

7. Data link layer and shared access

  • Aims of the data link layer: frames, control and error correcting process
  • Access control to the channel: static allocation, dynamic, FDM, TDM
  • Access protocol management: pure Aloha, discrete Aloha, CSMA, MACA and MACAW, CDMA
  • Protocols WLAN 802.11b : DSSS and FHSS
  • Other protocols WLAN : 802.11a, HyperLAN,
  • Protocols WPAN 802.15 : Bluetooth, HomeRF
  • Satellite access

8. The network layer

  • The network layer: conception problems
  • Routing mobile computers: location and roaming, domiciliation
  • Mobile IP

9. The GSM network

  • The GSM standard
  • Functional architecture of a GSM network
  • Radio subsystem
  • Network subsystem
  • Network management
  • Terminals

10. Standard DECT 1800

11. GSM Services organization

12. Network of mobile data: Mobitex

13. Satellite messaging

14. TextMessage Service

15. GSM evolution: GRPS, UMTS

Laboratory outline

1. Introduction session

  • Explaining the directives: mini-projects, guidelines (research project, technological assessment), defining research teams (coordinator, analyst, implementation and administrator)
  • Project methodology: steps, report, project team
  • Checking, reminder: theoretical basic concepts

2. Analysis session

  • Analysis and formalisation
  • Analysis and definition of the needs, strategic choices
  • Analysis and definition of the solution, conception choices

3. Prototyping

  • Technical documents: analysis
  • Network technology and equipment
  • Solutions

4. Implementation and tests

  • Implementation: installation, configuratino, tests, activation
  • Testing file transfer, print sharing, network logon, roaming and performance overview, interferences

5. Management

  • NT domain, WEP safety, users' management, access rights and resources

6. Final report and acceptation - defense

  • Team presentation: demo, final report
  • Individual presentation: oral questions


  • ESI course book
  • Andrew Tanenbaum, Réseaux, Pearson Education (4ème édition, 2003)
  • Guy Pujolle, Les réseaux, Eyrolles (3ème édition, 2000)
  • Al Agha, Pujolle, Vivier, Réseaux de mobiles & réseaux sans fil , Eyrolles 2001
  • Guy Pujolle, Davor Males, WiFi par la pratiqueEyrolles, 2004, 2ème édition