1TelcomTelcom2700/INFSCI 1071 2700/INFSCI 1071 Wireless NetworksWireless NetworksDavid TipperAssociate ProfessorAssociate ProfessorTelecommunications
10Telcom 2700/INFSCI 1071 192.5/3G/WLAN Mobile Devices• More Internet-friendly interface– Wide, color screens• More flexible to support new applicatio
11Telcom 2700/INFSCI 1071 21Base StationsBase Stations• Base Station (BS)Provides radio channels between mobile units and networkPico-cells : (indoor
12Telcom 2700/INFSCI 1071 23Base Station ControllerBase Station Controller• Base Station Controller (BSC)Manages a cluster of BS, channel assignment,
13Telcom 2700/INFSCI 1071 25HLR/VLRHLR/VLR• Home Location Register (HLR) – Specialized database server contains billing info, service profile and gene
14Telcom 2700/INFSCI 1071 27Satellite Basics• Components• Earth (ground) Stations – antenna systems on or near earth• Uplink – transmission from an ea
15Telcom 2700/INFSCI 1071 29Wireless MANs• Wireless Metropolitan Area Networks (WMANs) : provide wireless connectivity across a geographical area the
16Telcom 2700/INFSCI 1071 31IEEE 802.16 /WiMAX Standard • Characteristics of 802.16– Point to Multipoint (PMP) and Mesh protocol– NLOS wireless broadb
17Telcom 2700/INFSCI 1071 33WiMax Applications• According to WiMax Forum it supports 5 classes of applications:1. Multi-player Interactive Gaming.2. V
18Telcom 2700/INFSCI 1071 35Wireless Fidelity standards for InteroperabilityComponents: access points, antennas, mobile stations- 300 manufacturers- w
19Telcom 2700/INFSCI 1071 37WLAN Topologiesad-hoc based architectureBSS 1BSS 2BSS 3AP 1AP 2AP 3WT 1WT 2WT 3WT 4WT 5ESSWired-distribution networkBasic
2Telcom 2700/INFSCI 1071 3Text and Grading• Text: Mobile Communications 2ndedition, Jochen Schiller, Addison Wesleyalso recommend• Principles of Wire
20Telcom 2700/INFSCI 1071 39Applications of WPANs(a)(a)(b)(b)(c)(c)PSTN or the InternetPSTN or the InternetCable ReplacementAd hoc connectivityAccess
21Telcom 2700/INFSCI 1071 41Example Network Architecture Laptops Handheld PCs Switch & mobility and radio resource management Public Switched Tel
22Telcom 2700/INFSCI 1071 43Enablers• Wireless network development– Increased bandwidth/data rate – Falling costs– Always on capability– WLAN – hotspo
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
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
4Telcom 2700/INFSCI 1071 7Mobile vs. Wireless• Wireless Communication System: – Any electrical communication system that uses a naturally occurring c
5Telcom 2700/INFSCI 1071 9Mobility Issues• Mobility Types– User mobility : user can access network while mobile • must handoff calls/connections in p
6Telcom 2700/INFSCI 1071 11Mobile DevicesPerformance and CostPerformance and CostPager• receive only• tiny displays• simple text messages•two way page
7Telcom 2700/INFSCI 1071 13Wireless NetworksWireless NetworksIEEE 802.16100 Mbps – 10GbpsMetro, suburb, campus 1-15 kmWMANsIEEE 802.15 IrDa, BlueTooth
8Telcom 2700/INFSCI 1071 15Cellular Network Architecture• Cell : Area covered by 1 radio tower unit (base station) • Cellular Systems: • provide wir
9Telcom 2700/INFSCI 1071 172G Cellular Network ArchitectureTelcom 2700/INFSCI 1071 18Cell Phone MarketCell Phone Market• Stratification of market• T
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