Overview Information Access and Communication Networks in the z Poor Man’s Broadband Developing-world – Poor Man’s Cache – Packet Containment z TEK Internet Search Umar Saif z Inverse Multiplexing of Cellular LUMS, Pakistan Connections
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[email protected] z Teleputer (Time permitting) Motivation Internet in Pakistan Developed Developing z Facts of life in the developing world World e World d – Expensive International Bandwidth 2 MB Internet i 2 MB Internet Connection Connection v – No real peering points < $40 i > $4000 D – Internet used over dialup Bulk Data Bulk Data Transfer on Transfer on • Poor “Scratch card” provisioning the Internet l the Internet > 70% a < 15% t i Average End- Average End- user g user i Bandwidth via Bandwidth ISP D via ISP > 100 kb/sec < 10 kb/sec Internet in Pakistan How I Stumbled Upon this? z Average Dialup Bandwidth z “Good research solves real problems in a – Less than 10 kb/sec practical way” z Almost Never Used for – Started last year when I wanted to exchange a 3.5 MB PDF file with my dad – Exchanging – Two laptops sitting next to each other – Disseminating – No way to exchange data if you don’t have portable – Accessing storage! …. Content larger than a couple of hundred • We actually went our and bought a CDR to exchange kilobyes data…. 1 Problem Solution <10kb/sec Internet Bypass the Internet when exchanging large Internet ~ 56kb/sec ~ 56kb/sec Not a Last Mile Problem Email Attachments Disruptive Technology z Time to exchange a 3.5 MB file on the z Of course Internet also started as an