Motorola V323I - Cell Phone - CDMA2000 1X Manuel d'utilisateur

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Telcom
Telcom
2700/INFSCI 1071
2700/INFSCI 1071
Wireless Networks
Wireless Networks
David Tipper
Associate Professor
Associate Professor
Telecommunications Program
University of Pittsburgh
http://www.sis.pitt.edu/~dtipper/2700.html
Slides 1
Slides 1
Telcom 2700/INFSCI 1071
2
Course Goals
Provide students a understanding of the
structure, system aspects and protocols of
wireless networks.
The focus in on the generations of cellular
networks, WirelessMANs, WirelessLANs,
and Wireless PANs.
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Résumé du contenu

Page 1 - Course Goals

1TelcomTelcom2700/INFSCI 1071 2700/INFSCI 1071 Wireless NetworksWireless NetworksDavid TipperAssociate ProfessorAssociate ProfessorTelecommunications

Page 2 - Course Outline

10Telcom 2700/INFSCI 1071 192.5/3G/WLAN Mobile Devices• More Internet-friendly interface– Wide, color screens• More flexible to support new applicatio

Page 3

11Telcom 2700/INFSCI 1071 21Base StationsBase Stations• Base Station (BS)Provides radio channels between mobile units and networkPico-cells : (indoor

Page 4 - Wireless Issues

12Telcom 2700/INFSCI 1071 23Base Station ControllerBase Station Controller• Base Station Controller (BSC)Manages a cluster of BS, channel assignment,

Page 5 - Device Issues

13Telcom 2700/INFSCI 1071 25HLR/VLRHLR/VLR• Home Location Register (HLR) – Specialized database server contains billing info, service profile and gene

Page 6 - Mobile Devices

14Telcom 2700/INFSCI 1071 27Satellite Basics• Components• Earth (ground) Stations – antenna systems on or near earth• Uplink – transmission from an ea

Page 7

15Telcom 2700/INFSCI 1071 29Wireless MANs• Wireless Metropolitan Area Networks (WMANs) : provide wireless connectivity across a geographical area the

Page 8 - Cellular Network Architecture

16Telcom 2700/INFSCI 1071 31IEEE 802.16 /WiMAX Standard • Characteristics of 802.16– Point to Multipoint (PMP) and Mesh protocol– NLOS wireless broadb

Page 9 - Cell Phone Market

17Telcom 2700/INFSCI 1071 33WiMax Applications• According to WiMax Forum it supports 5 classes of applications:1. Multi-player Interactive Gaming.2. V

Page 10 - Handset Market

18Telcom 2700/INFSCI 1071 35Wireless Fidelity standards for InteroperabilityComponents: access points, antennas, mobile stations- 300 manufacturers- w

Page 11 - Base Stations

19Telcom 2700/INFSCI 1071 37WLAN Topologiesad-hoc based architectureBSS 1BSS 2BSS 3AP 1AP 2AP 3WT 1WT 2WT 3WT 4WT 5ESSWired-distribution networkBasic

Page 12 - Mobile Switching Center

2Telcom 2700/INFSCI 1071 3Text and Grading• Text: Mobile Communications 2ndedition, Jochen Schiller, Addison Wesleyalso recommend• Principles of Wire

Page 13 - WWANS - Satellites

20Telcom 2700/INFSCI 1071 39Applications of WPANs(a)(a)(b)(b)(c)(c)PSTN or the InternetPSTN or the InternetCable ReplacementAd hoc connectivityAccess

Page 14 - Typical Satellite System

21Telcom 2700/INFSCI 1071 41Example Network Architecture Laptops Handheld PCs Switch & mobility and radio resource management Public Switched Tel

Page 15 - Wireless MANs

22Telcom 2700/INFSCI 1071 43Enablers• Wireless network development– Increased bandwidth/data rate – Falling costs– Always on capability– WLAN – hotspo

Page 16 - WiMAX Architecture

23Telcom 2700/INFSCI 1071 45Example Application Marie buys a new phone. She is showing it to her friend Susie.Marie gives names to positions. Marie le

Page 17 - WiMax Applications

3Telcom 2700/INFSCI 1071 5Course Outline• Wireless Local Area Networks (Ch 7)– IEEE 802.11 standard and MAC layer – Variations in a,b,g,n• Wireless Pe

Page 18 - IEEE 802.11 Terminology

4Telcom 2700/INFSCI 1071 7Mobile vs. Wireless• Wireless Communication System: – Any electrical communication system that uses a naturally occurring c

Page 19 - WLAN Topologies

5Telcom 2700/INFSCI 1071 9Mobility Issues• Mobility Types– User mobility : user can access network while mobile • must handoff calls/connections in p

Page 20 - Wireless Networks

6Telcom 2700/INFSCI 1071 11Mobile DevicesPerformance and CostPerformance and CostPager• receive only• tiny displays• simple text messages•two way page

Page 21 - Evolving Applications

7Telcom 2700/INFSCI 1071 13Wireless NetworksWireless NetworksIEEE 802.16100 Mbps – 10GbpsMetro, suburb, campus 1-15 kmWMANsIEEE 802.15 IrDa, BlueTooth

Page 22 - Enablers

8Telcom 2700/INFSCI 1071 15Cellular Network Architecture• Cell : Area covered by 1 radio tower unit (base station) • Cellular Systems: • provide wir

Page 23 - Example Application

9Telcom 2700/INFSCI 1071 172G Cellular Network ArchitectureTelcom 2700/INFSCI 1071 18Cell Phone MarketCell Phone Market• Stratification of market• T

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