Network Evolution in Coming 10 Years: What's the Future of Network?

1. Network Evolution in Coming 10 Years: What's the Future of Network? Byeong-Gi KIM Park Laboratory, GITS, Waseda University October 2nd , 2013 ~Toward Information-Centric Networking~

2. Outline • Background: Information-Centric Networking • Introduction: Content-Centric Networking • Research Challenges • Research in Progress • Conclusion

3. Background • Information-Centric Networking (ICN) • “Its founding principle is that a communication network should allow a user to focus on the content he or she needs, rather than having to reference a specific physical information where that content is to be retrieved from” Request Internet Reply User

4. Introduction • Content-Centric Networking (CCN) CCN moves the universal component of the network stackfrom IP packets to named content chunks

5. Introduction (cont.) • Content-Centric Networking (cont.) • 2 packet types • Interest: used for requesting a specific content • Data: sent back to the corresponding consumer(s) in response to the Interest(s) CCN packet types

6. Introduction (cont.) • Content-Centric Networking (cont.) • 3 data structures • Forwarding Information Base (FIB): used for forwarding the matching Interests to the corresponding publisher(s) • Content Store (CS): store the incoming content • Pending Interest Table (PIT): record the incoming Interest until the corresponding content is received

7. Introduction (cont.) • Content-Centric Networking (cont.) Forwarding Information Base (FIB) Data is stored in Content Store (CS) Interestwaseda.jp/sample.jpg 0 1 Data Pending Interest Table (PIT)

8. Research Challenges • Content-oriented routing • Current routing protocols are based on location information, i.e., IP addresses. • Metrics that can reflect content itself, e.g., content popularity, should be used for routing in CCN • Improving efficiency of cache usage • Not only considering cache replacement algorithm but also distributed caching algorithm need to be researched.

9. Research Challenges (cont.) • Effective multi-face forwarding • CCN supports multi-face packet forwarding, but there has been few research how to use the multi-face forwarding function effectively • Support current applications • Currently, real-time streaming and content sharing applications have been mainly researched. • The other applications further need to be investigated and researched.

10. Research in Progress • Data Gathering • 1 Interest-to-1 Data exchange communication in CCN would have a bad influence in aspect of scalability in large scale networks, i.e., sensor networks. • We aim at reducing the overhead such as control traffic, energy consumption.

11. Research in Progress (cont.) • Push-oriented application support • CCN architecture supports pull-oriented communication, but it would cause large control overhead while supporting push-oriented applications, e.g., emergency announcement. • We are designing a protocol to support the push-oriented communication over CCN.

12. Conclusion • ICN is an alternative approach to the architecture of computer networks, which aims at supporting current Interest users’ demands; users care about data itself instead of where the data is. • CCN architecture provides information-centric principles with bringing several strong points; native asynchronous/synchronous multicast support, cache usage, security, etc. • There are many challenge issues; • Content-oriented routing • Improving efficiency of cache usage • Effective multi-face forwarding • Support current applications, e.g., real-time streaming.

13. Thank you!