contrail: mobile-to-mobile networking over 3g networks
Post on 14-Feb-2016
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Contrail: Mobile-to-Mobile Networking over 3G NetworksPatrick Stuedi, Mahesh Balakrishnan, Iqbal Mohomed, Morley Mao,
Venugopalan Ramasubramanian, Ted Wobber,
Chris
Alice
Bob
Jane
“Get status messages from Bob that mention me”
“Get photos of Bob’s dog”
“Get Bob’s location if he’s in Redmond”
Motivation: enable selective sharing of databetween 3G devices
Why not build cloud-based application?PrivacyThe cloud sees (and stores) all your dataEfficiencyAll data is uploaded to the cloud…even if no other device wants it
Cloud-based relayBob uploads matching photos to the cloud which relays them to Alice
Alice BobFilter
Data
Contrail uses two ideas:Edge Filters
Alice installs a filter on Bob requesting all new photos taken in Seattle
In Contrail, the cloud is the routerNo application state or computationCannot view (encrypted) data or filters
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