WWIC 2012 Panel onInternetworking with Challenging ConditionsContent-Centric Networking inDelay/Disruption-Tolerant Networ...
Torsten Braun: Content-Centric Networking in Delay/Disruption-Tolerant Networks       Traditional Information / Service Ac...
Torsten Braun: Content-Centric Networking in Delay/Disruption-Tolerant Networks       Motivation for Content-Centric Netwo...
Torsten Braun: Content-Centric Networking in Delay/Disruption-Tolerant Networks       Content-Centric Networking (CCN)    ...
Torsten Braun: Content-Centric Networking in Delay/Disruption-Tolerant Networks       Content Distribution with CCN       ...
Torsten Braun: Content-Centric Networking in Delay/Disruption-Tolerant Networks       Advantages of CCN       >      Autom...
Torsten Braun: Content-Centric Networking in Delay/Disruption-Tolerant Networks       Benefits of CCN in Wireless/Mobile N...
Torsten Braun: Content-Centric Networking in Delay/Disruption-Tolerant Networks       CCN in DTNs     Name                ...
Torsten Braun: Content-Centric Networking in Delay/Disruption-Tolerant Networks       Conclusions       >      Content-Cen...
Torsten Braun: Content-Centric Networking in Delay/Disruption-Tolerant Networks       Thanks for your attention !       > ...
Upcoming SlideShare
Loading in …5
×

Content-Centric Networking in Delay/Disruption-Tolerant Networks

931 views

Published on

slides from WWIC 2012 Panel on DTNs

Published in: Technology, Business
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
931
On SlideShare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
28
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Content-Centric Networking in Delay/Disruption-Tolerant Networks

  1. 1. WWIC 2012 Panel onInternetworking with Challenging ConditionsContent-Centric Networking inDelay/Disruption-Tolerant NetworksTorsten BraunUniversität Bern, Switzerlandbraun@iam.unibe.chcds.unibe.ch
  2. 2. Torsten Braun: Content-Centric Networking in Delay/Disruption-Tolerant Networks Traditional Information / Service Access search engine / service registry user’s end system web server / web service DNS server Santorini, June 7, 2011 2
  3. 3. Torsten Braun: Content-Centric Networking in Delay/Disruption-Tolerant Networks Motivation for Content-Centric Networking > Today’s network traffic is dominated by information retrieval rather than point-to-point communication between machines or humans. > Today: huge amount of data sent redundantly on a link. > Circuit communication model might not be appropriate any more. > Future communication architecture should focus on information objects instead of nodes. > Several research projects, e.g., — US: NDN/CCNx — Europe: SAIL/NetInf, Pursuit Santorini, June 7, 2011 3
  4. 4. Torsten Braun: Content-Centric Networking in Delay/Disruption-Tolerant Networks Content-Centric Networking (CCN) > [Jacobson et al., ACM CONEXT, December 2009] > Combination of content lookup and message routing > Idea: describe the users’ interests in the message header, but not where to get it. > Messages — Interest: content name, selector — Data: content name, signature (info), data > Hierarchical content names — Example: /unibe.ch/braun/lecture/20120529 Santorini, June 7, 2011 4
  5. 5. Torsten Braun: Content-Centric Networking in Delay/Disruption-Tolerant Networks Content Distribution with CCN /unibe.ch/braun/lecture/20120529 Interest/Data 1 2 3 4 5 6 7 Santorini, June 7, 2011 5
  6. 6. Torsten Braun: Content-Centric Networking in Delay/Disruption-Tolerant Networks Advantages of CCN > Automatic content searching and distribution > ≤ 1 round-trip-time > Latency reduction > Bandwidth reduction (cf. multicast) > Open Issues: routing and naming Santorini, June 7, 2011 6
  7. 7. Torsten Braun: Content-Centric Networking in Delay/Disruption-Tolerant Networks Benefits of CCN in Wireless/Mobile Networks > Broadcast property of wireless medium  single Interest for many neighbor nodes > No beaconing required to learn about neighbor nodes > Reduced delay and network load due to possible caching > Support of short mobile nodes’ encounters Santorini, June 7, 2011 7
  8. 8. Torsten Braun: Content-Centric Networking in Delay/Disruption-Tolerant Networks CCN in DTNs Name Origin of Data Interest /feeds.sf.tv/podcast/10vor10 me - /youtube.com/movies/ mydaughter - DesperateHousewives Encounter … … … /unibe.ch/braun/lecture/ me, bs.mpg OperatingSystems mystudent … … … > Possible message exchange at encounter 1. Exchange of interests, possibly with priority of own / friends’ interests 2. Exchange of relevant data Santorini, June 7, 2011 8
  9. 9. Torsten Braun: Content-Centric Networking in Delay/Disruption-Tolerant Networks Conclusions > Content-Centric Networks and Delay/Disruption-Tolerant Networks seem to be a good match. — No needs for beacons — Exploitation of wireless broadcast media — Efficient exchange of Interests and Data > Current work on searching in content directories > Publish / Scribe approaches might be less beneficial. Santorini, June 7, 2011 9
  10. 10. Torsten Braun: Content-Centric Networking in Delay/Disruption-Tolerant Networks Thanks for your attention ! > braun@iam.unibe.ch > cds.unibe.ch Santorini, June 7, 2011 10

×