Μοντέλα χρήσης ευέλικτων ασυρματικών δικτύων

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Μοντέλα χρήσης ευέλικτων ασυρματικών δικτύων. Ηλίας Ευσταθίου efstath@aueb.gr Mobile Multimedia Laboratory http://mm.aueb.gr Ο . Π . Α. e-business forum ομάδα ΣΤ2, 1η ανοικτή συνάντηση, 3/5/2004. Η ομάδα μας στο Ο.Π.Α. Telecommunications Services Research Group - PowerPoint PPT Presentation

Transcript of Μοντέλα χρήσης ευέλικτων ασυρματικών δικτύων

  • efstath@aueb.gr

    Mobile Multimedia Laboratoryhttp://mm.aueb.gr

    ...

    e-business forum 2, 1 , 3/5/2004

  • ...Telecommunications Services Research GroupNetwork Economics and Services Group ( Theory, Economics and Systems Lab) http://nes.aueb.grMobile Multimedia Lab http://mm.aueb.gr

    4 . , . , . , . 10 > 10 Mobile communications technologiesPricing and charging wireless and mobile servicesEnhanced Internet protocols for efficient mobile/wireless operationAdvanced network applications and servicesInteractive multimediaMultimedia multicast and broadcast (for UMTS and 4G)

  • (1) 802.11

    (2) 802.11

    (3) Internet sharing, interconnection, point-to-point links, freenets, mesh networks, mobile ad hoc networks, mobile hotspots, tracking, consumer electronics

    (4) hotspot WISP, aggregator, network sharing. .

  • 802.11802.11 IP - wireless Ethernet (hop) IPA end-to-end (TCP, HTTP, ..)

    standard Wintel (fixed) clientsEthernet 802.11 ;( standard )A (backwards compatibility) / Wi-Fi Alliance: ; :Cisco / Intel CCX (Cisco Compatible Extensions) WAPI (Wired Authentication and Privacy Infrastructure) Atheros Super G

  • 802.11 3G802.11 3G+ PHY MAC+ / ($5 chipsets)+ ad hoc mode IR, Bluetooth, UWB infrastructure mode 3G, WMAN (IEEE 802.16)+ ( 3G air interfaces)+ : + Atheros all-in-one chip: 2.4GHz radio, baseband processor, MAC, AES crypto, CCX, 802.11e QoS, energy efficiency- ()- () : Shared bandwidth PHY MAC: ; : 802.11 data 2.5G/3G;

  • 802.11 802.11, 2G/3G SIM authentication VoIP 802.11 modeVertical handovers (. 802.21): 3G handover 802.11 ;

    3GSM (2/2004): 802.11

    (1) Cisco 7920 802.11 VoIP handset (non-cellular)(2) Nokia Communicator 9500: Symbian OS + Java(3) Motorola MPx100 (802.11 as an accessory): Windows Mobile + Java

  • 802.11 Internet , , , .. , , , ..

    Fixed Broadband Wireless Access (FBWA) DSL 802.16 802.16 FBWA 802.11;

    server..,

  • -- 802.11

    3Com Wireless LAN Building-to-Building Bridge 11 ( )

    Cisco Aironet 350 Wireless Building-to-Building Kit

  • 802.11 / 802.11 IP TCP/UDP/IP Community Wireless Networks freenets

    Seattle Wireless: freenets;Freenets : SF, NYC, London, ..

    Athens Wireless, Salonica Wireless, .. , nodedb.com freenets

  • Mesh networks 802.11 -

    . . Zero-configuration freenets

    Project CUWiN Roofnet PC ( ~486) Tropos Networks ( Motorola Nokia Nokia Rooftop) embedded MeshNetworks Inc. 802.11

  • Mobile ad hoc networkss: Mesh networks

    :(1) (2) (3)

    (Disaster relief) ; laptop PDA ;

    ,

    ;

  • hotspotsQueen Mary II802.11 Internet

    Connexion by Boeing Lufthansa, SAS, .. (20Mbps downlink, 1Mbps uplink)802.11 $30 (>6 ), $20 (3-6 ), $15 (

  • 802.11Quarterscope Wi-Fi Positioning SystemGPS, SSID 802.11 20

    Bluesoft AeroScout Legoland TDOA (time difference of arrival) 38 802.11 tag, SMS 3

  • 802.11Philips Streamium FlatTV ($2,699 802.11 HDTV)1280 X 768, 23 stream (video, MP3) Internet

    Reciva Internet Radio Internet

  • Hotspots

  • hotspots Gartner1.200 hotspot 01 , 71.000 032,5 . 02, 9,3 . 03, 30 . 04 ()... 91% 02 03: 4,7 . . 1,7 . 05: 423 hotspot, 23.500 WLAN ...

    To (roaming) ... hotspot

    WISP (wireless ISP) hotspot

  • Hotspot aggregators (Boingo, iPass, GRIC, ..) Managed Service Providers WISP aggregators ;

    (Mobile) Network Operators (T-Mobile, Verizon, ..) aggregators hotspot

    T-Mobile + iPass Internet 802.11 ;

  • hotspot (freenets, open hotspots, ..)

    hotspot Joltage (, )Speakeasy NetshareLinspotPacific Wi-Fi( micro-WISP aggregators)

    , hotspot bandwidth , WLAN Internet , hotspot ; ( )

  • Peer-to-Peer Wireless Network Confederation (P2PWNC) WLAN : WLAN administrative domains WLAN ( home domain) P2PWNC hotspot hotspot hotspot ( P2P freenets), P2PWNC

    (1) ;.. 20% bandwidth

    (2) ( brokers aggregators) (. hotspot )

  • efstath@aueb.grhttp://mm.aueb.gr/~efstath/

    Mobile Multimedia Laboratory...