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WI-FI

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candace-cantrell
9 diapositives · 348 Views · Nov 11, 2014

WI-FI. An ELAG 2004 presentation by Johan van Halm on 11 June 2004 in Trondheim. WIFI STANDS FOR WI RELESS FI DELITY AND ENCOMPASSES A WORLDWIDE (DEFACTO) STANDARD, WHICH ALLOWS HIGH-SPEED WIRELESS INTERNET TRANSMITTED VIA RADIO WAVES WITH SPEEDS OF MBPS, RATHER THAN KBPS.

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WI-FI
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  1. WI-FI An ELAG 2004 presentation by Johan van Halm on 11 June 2004 in Trondheim

  2. WIFI STANDS FOR WIRELESS FIDELITY AND ENCOMPASSES A WORLDWIDE (DEFACTO) STANDARD, WHICH ALLOWS HIGH-SPEED WIRELESS INTERNET TRANSMITTED VIA RADIO WAVES WITH SPEEDS OF MBPS, RATHER THAN KBPS. THE SO-CALLED HOTSPOT OR HUB OR WLAN ACCESS POINT SENDS OUT A WIRELESS SIGNAL TO ALLOWS WIRELESS DEVICES ACCESS WITHIN A CIRCLE OF 100 METER.

  3. ISSUES (I): • SECURITY • SERVICES AND APPLICATIONS/HOTSPOTS • EXPLOITATION/ACCESS PRICES • HOW LIBRARIES AND INFORMATION PROVIDERS ARE RESPONDING TO THIS NEW OPPORTUNITIES (CONTENT LICENSING, ACCESS AND ACCESS CONTROL, CHARGING, AUTHENTICATION)

  4. Issues(II) • THE ROLE OF SOFTWARE SUPPLIERS (LIBRARY/CONTENT MANAGEMENT/KNOWLEDGE MANAGEMENT) • MAJOR STAKE HOLDERS: ASSOCIATIONS/GROUPS OF SUPPLIERS, OPERATORS AND WIFI SERVICE CENTRES • USER INSTRUCTION GUIDES AND USER QUICK-START GUIDES • CM, KM AND LM SYSTEMS WITH ALLOWS THE USE OF (INSTITUTION OWNED) LAPTOPS

  5. COST ELEMENTS - A FEE FOR THE HOTSPOT OPERATOR -         THE COSTS FOR THE ADSL-SUPPLIER & -         EVENTUALLY THE FEE FOR USING CERTAIN INFORMATION PROVIDERS.

  6. PAYMENT -         PAY-AS-YOU-GO AFTER CONSOLIDATING ALL COSTS TO THE USER CAN BE MADE BY CREDIT CARD, PIN OR BY PAYING CASH -         STARBUCKS CHARGES A USER $ 2.95 FOR 15 MINUTES ACCESS WITH A PAY-AS-YOU- GO PLAN OR $ 30/MONTH FOR A CERTAIN GEOGRAPHICAL AREA - 

  7.  - HUBHOP IN THE NETHERLANDS IS PLANNING 4,000 PREMIUM HOTSPOTS WITH ADVERTISING OF LOCATION BASED CONTENT OF RESTAURANTS (DAILY MENUS AND SPECIAL OFFERS), MUSIC STORES (TOP10 LISTINGS) AND GPRS ACCESS VIA AN AUTOMATIC SWITCH AFTER LEAVING THE ACCESS POINT -     OSS PUBLIC LIBRARY PAYS € 125/MONTH TO HUBHOP AND REVENUES ARE SPLIT (60% TO HUBHOP AND 40% TO THE LIBRARY) AND THE USER REGISTERS VIA SMS AND PAYS € 5/HOUR, € 15/WEEK OR € 25/MONTH. A SCRATCH CARD WITH AN HOUR VALUE OF WIFI ACCESS CAN BE BOUGHT FOR € 5.

  8. BARRIERS FOR EXPLOITATION (I) • -           HIGH COSTS TO THE OPERATOR FOR • CUSTOMER MANAGEMENT, NOTABLY • WITH SUBSCRIPTIONS WHICH CAN BE • USED AT DIFFERENT LOCATIONS • GSM PROVIDERS MAY JUMP ON THIS • BANDWAGON BY OFFERING WIFI • ACCESS (THEY HAVE ALREADY • EXTENSIVE CHARGING AND BILLING SYSTEMS IN PLACE) TO THEIR SUBSCRIBERS, WHICH MAY LOG-IN THE SAME WAY FOR WIFI AS FOR GRPS

  9. BARRIERS FOR EXPLOITATION (II) -    IP-ADDRESSES FOR GRPS ARE DOMAIN SPECIFIC, SO WHEN A USER GOES FROM GRPS TO WIFI ACCESS THE IP-ADDRESS HAS TO BE CONVERTED INTO AN IP-ADDRESS FOR WIFI ACCESS, WHICH MEANS AN EXTRA LOG-IN AND LOSS OF THE PRESENT SESSION -   LACK OF “UNIFIED ROAMING”: TRANSFERRING AN EXISTING CONNECTION TO ANOTHER NETWORK/OPERATOR -    LACK OF VISIBILITY AND RECOGNITION AT PUBLIC PLACES (NO ICON YET) AND A KILLER APPLICATION FOR THE PROLIFERATION OF WIFI COULD WELL BE THE COMBINATION OF MOBILE CALLING AND WIFI ACCESS VIA VOICE-OVER-IP, WHICH ALLOWS THE AUTOMATIC TRANSFER OF A MOBILE NETWORK TO A WIFI NETWORK. WIFI CALLING IS CHEAPER THAN MOBILE CALLING.