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Wireless Networks - Intranet DEIBhome.deib.polimi.it/capone/wn/1-EN-Introduction.pdf · o Mentum...

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Politecnico di Milano Facoltà di Ingegneria dell’Informazione Wireless Networks Prof. Antonio Capone
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Politecnico di MilanoFacoltà di Ingegneria dell’Informazione

Wireless Networks

Prof. Antonio Capone

Politecnico di MilanoFacoltà di Ingegneria dell’Informazione

1 – Introduction

Wireless NetworksProf. Antonio Capone

Teacher

o Prof. Antonio Caponeo Office:

n Dip. di Elettronica e Informazionen 3rd floorn Room 335

o Tel: (02 2399) 3449o E-mail: [email protected] Web page: http://home.dei.polimi.it/capone/

o Office hours:n Tuesday 14.00-15.30

A. Capone: Wireless Networks 3

Course organizationo Wireless Networks is an integrated course (10

credits) that includes two courses of 5 credits:n Wireless Internet (WI)n Mobile Radio Networks (MRN)

o The two courses will run in parallel to avoid problems with the lecture schedule:

o 9 hours in the weekly schedule to be split among the two courses: n Tuesday 15:15-18:15 S.1.6 (MRN)n Wednesday 8:15-10:15 D0.3 (WI)n Thursday 8:15-10:15 L.26.13 (WI)n Friday 10:15-12:15 L.26.01 (MRN)n Note that the first part of the course is shared

among MRN and WIA. Capone: Wireless Networks 4

A. Capone: Wireless Networks 5

Class notes and bookso Papers and other material available

on the course web pageo Course slideso Links to material available on the

web pages of the two courses

A. Capone: Wireless Networks 6

Course home pagehttp://www.antlab.polimi.it/teaching-capone/wireless-networks

Goal of the course:Mobile Radio Networks

o Provide you the knowledge on the technology and network protocols of mobile radio networks, as well as on design and dimensioning methodology

A. Capone: Wireless Networks 7

o Mobile radio networksn Cellular architecturesn Radio planning and

networks designn Signaling and controln GSMS/GPRSn UMTSn LTE

A. Capone: Wireless Networks 8

Goal of the course:Wireless Internet

o Distributed wireless networks for Internet accessn Technologies and protocols for wireless

access networks (WiFi, WiMax, Bluetooth, Zigbee)

n Methodologies for the analysis of mechanisms and protocols for the access to wireless medium

n Distributed algorithms for the control and management of wireless networks

n Architectures and protocols for wireless multi-hop networks (ad hoc and sensor networks)

n Hands-on project on ad hoc networks

Pre-requisites

o Mobile radio networks:Communication networks basics, TCP/IP protocols, queuing theory basics (*), optimization basics (*).

o Wireless Internet:Communication networks basics, TCP/IP protocols, queuing theory basics (*).

A. Capone: Wireless Networks 9

A. Capone: Wireless Networks 10

Examso Exams are written and oralo In same cases (typically with a written exams

score between 21 and 27) the oral exam can be skipped (it's my decision you need to check on the pdf file if a final mark is proposed without oral).

o Also students can ask for a oral exam (but written exam score must be >= 15)

o Notes on the organization:n Written exam: same dates same time same room for all

courses

A. Capone: Wireless Networks 11

Examso MRN:

n Written exam: up to 30 points (duration 1:45)n Additional topic: up to 2 pointsn Oral exam: +/- 4 points

o WI:n Written exam: up to 30 points (duration 1:45)n Additional topic: up to 2 pointsn Oral exam: +/- 4 points

o WN:n Written exam: up to 30points (duration 2:15h)n Additional topic: up to 2 pointsn Oral exam: +/- 4 points

Course overview

A. Capone: Wireless Networks 12

Phones …

13A. Capone: Wireless Networks

Mobile phones

14A. Capone: Wireless Networks

WiFi everywhere

A. Capone: Wireless Networks 15

Cellular subscribers

16A. Capone: Wireless Networks

Mobile vs fixed vs internet

Per 100 inhabitantso 96.8 mobile subscribers o 43.4 internet users o 10.8 fixed-broadbando 47.2 mobile-broadband

Source: ITUData: 2015

A. Capone: Wireless Networks 17

Mobile subscribers by country

A. Capone: Wireless Networks 18

Source: World BankData: 2016

Network planning tools

19

Main Planning Tools:

o Aircom Asseto Mentum Planeto Atoll FORSKo ATDIo WinPropo EDX Signal Proo CelPlano Siradelo PathlossMain Optimization

Engineso Actixo Capesso

A. Capone: Wireless Networks

Network management & control

20A. Capone: Wireless Networks

Course program: MRNo Basic concepts

n Characterization of the mobile radio channeln Digital transmission on the wireless channeln Voice coding

o Introduction to mobile radio networksn Network architecture and functional

elementsn Multiple access techniques for the radio

channeln The concept of cellular coveragen The concept of frequency reusen Mobility management: cell selection,

location management, handoverA. Capone: Wireless Networks 21

Course program: MRN

o Capacity and radio planningn Mathematical models and algorithms for

coverage optimizationn Mathematical models and algorithms for

the static frequency assignmentn Dynamic channel allocation techniques

A. Capone: Wireless Networks 22

Course program: MRN

o Performance analysisn Models for the capacity estimation of

CDMA systemsn Teletraffic models for the performance

evaluation at call leveln Models for the dimensioning of cells and

location areas

A. Capone: Wireless Networks 23

Course program: MRN

o GSMn Architecture and interfacesn Physical and logical channelsn Transport in the fixed networkn Mobility management: localization and

handover n Telephone signalingn Signaling network architecture, signaling

protocols, network databases, call management procedures, mobility management procedures

A. Capone: Wireless Networks 24

Course program: MRN

o GPRSn Network architecture and protocols n Radio interfacen Medium Access Control (MAC)n Mobility managementn Interconnection to public and private IP

networks

A. Capone: Wireless Networks 25

Course program: MRN

o UMTSn Radio accessn Spreading and coding procedures for the

W-CDMAn Signaling and transport channelsn Power control proceduresn High Speed Packet data servicesn Core network

A. Capone: Wireless Networks 26

Course program: MRN

o Long Term Evolution (LTE)n System architecturen Radio interface (LTE)n Core network (EPC)n VOIP over LTE

A. Capone: Wireless Networks 27

A. Capone: Wireless Networks 28

Course program: WIo Technologies of wireless networks

n Wi-Fi (Architecture and protocols of WLAN, IEEE 802.11 specifications, multiple access, frame format, distribution system, mobility management, quality of service, mesh topologies),

n Bluetooth (Bluetooth specifications, picocells and scatternet, channel access, station states, network formation and signaling),

n WMAN (IEEE 802.16 – WiMax standards, network architecture, Point-To-Multipoint, MESH, channel access and scheduling)

n Zigbee (IEEE 802.15.4 and Zigbee alliance specifications, star-tree-mesh topologies, multiple access schemes to the wireless channel),

A. Capone: Wireless Networks 29

Course program: WI

o Network and transport layer. n Mechanisms for the mobility management at

network layer (Mobile IP, micro-mobility, application layer mobility).

n TCP over wireless (Management of channel impairments, end-to-end approaches, indirect TCP, link layer approaches, analytical models).

A. Capone: Wireless Networks 30

Course program: WIo Multiple access to the wireless channel

(models for the analysis) n Aloha protocol (infinite population model, finite

population model, single-buffer model, stabilization algorithms)

n CSMA (Carrier Sense Multiple Access), CSMA/CD (CSMA with Collision Detect), CSMA/CA (CSMA with Collision Avoidance),

n Polling schemes (models for calculating the waiting time, exhaustive service, gated service, limited service and round robin)

n Scheduling schemes for the radio access (signaling the queue status, channel state dependent scheduling, multi-channel scheduling).

A. Capone: Wireless Networks 31

Course program: WIo Ad hoc networks

n Basics of ad-hoc and MESH networks. n Medium access control schemes for ad hoc

networksn Routing for ad-hoc networks (proactive routing,

reactive routing, geographic routing, hybrid schemes).

n Broadcast and multicast in ad-hoc networks

A. Capone: Wireless Networks 32

Course program: WIo Sensor networks (basic concepts only)

n Application scenarios and differences with ad hoc networks

n Multiple access schemes and activity period management

n Energy efficient routingn Planning of sensor networks

A. Capone: Wireless Networks 33

Course programo Hand-on activities (prof.

Ilario Filippini)n Introduction to Netkitn Basic Topicsn Routing (OLSR e AODV) n Filtering and Shaping

(iptables and tc) n Projects

Netkit

Wireless “power”

A. Capone: Wireless Networks 34


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