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    1&5- 6&*&0)7"* 8$0&%&,, 1&-2"03,C. Pham

    Universit de Pau et des Pays de lAdour

    Dpartement Informatique

    http://www.univ-pau.fr/~cpham

    [email protected]

    These slides are compiled from several sources:

    - Mobile Handset Cellular Network from http://www.slideserve.com/melva/mobile-handset-cellular-network- Florent Dupont, Univ. Lyon- Figures from Stallingss book Wireless Communications and Neworks, 2E-Added information by myself with sources from Wikipedia

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    j&0A$:& i")+=)?Improved performance, decreasing cost of delivery

    Typicalaverage bit

    rates(peak rateshigher)

    WEBbrowsing

    Corporate data accessStreaming audio/video

    Voice & SMSPresence/location

    xHTML browsingApplication downloadingE-mail

    MMS picture / video

    Multitasking

    3G-specific services takeadvantage of higher bandwidth

    and/or real-time QoS

    A number of mobileservices are bearer

    independent in nature

    HSDPA1-10Mbps

    WCDMA2

    Mbps

    EGPRS473kbps

    GPRS171kbps

    GSM

    9.6kbps

    Push-to-talk

    Broadbandin wide area

    Video sharingVideo telephonyReal-time IPmultimedia and gamesMulticasting

    CDMA

    2000-

    EVDO

    CDMA

    2000-

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    20001x

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    8 Time Slots par canal

    Dure d'une trame TDMA = 4.62 ms (1250 tr/s)

    7500 x 1/13 MHz = 577 s

    (7500 priodes de Quartz de mobile)156.25 bit

    156.25*1250=270 kbps

    temps

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    BCCH: Broadcast Control CHannel

    SDCCH: Standalone Dedicated Control CHannel

    TCH: Traffic CHannel

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    GSM9.6kbps (one timeslot)

    GSM Data

    Also called CSD

    GSMGeneral Packet Radio ServicesData rates up to ~ 115 kbps

    Max: 8 timeslots used as any one time

    Packet switched; resources not tied up all the time

    Contention based. Efficient, but variable delays

    GSM / GPRS core network re-used by WCDMA (3G)

    GPRS

    HSCSD

    High Speed Circuit Switched DataDedicate up to 4 timeslots for data connection ~ 50 kbps

    Good for real-time applications c.w. GPRS

    Inefficient -> ties up resources, even when nothing sent

    Not as popular as GPRS (many skipping HSCSD)

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    Enhanced Data Rates for Global EvolutionUses 8PSK modulation3x improvement in data rate on short distances

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    WCDM

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