Flow control enhancements in Content Centric Networking

In window-based flow control mechanism for Content Centric Networking (CCN), for one Interest (a content request packet), more than one Content Objects (content chunks) are expected to be received. TCP’s RTT estimation algorithm cannot be used directly for such scenarios because for some contents, there will be no Interest reference. In this paper, we extend TCP’s RTT estimation for window-based flow control mechanism.

We also estimate the processing time delay and use the estimate to compute a number of timer values. The proposed mechanism is supported by various experimental results. In addition to that, we also propose an optimization for Content Store processing in window-based flow control mechanism for the received Interest packet and compare the results obtained from the actual implementation.