ICN Performance Enhancing Proxies for the Global Content Distribution

In this paper, we reveal the potential performance degradation in the global content distribution over Information-Centric Networking (ICN), and propose an ICN performance enhancing proxy (PEP) to mitigate this degradation. ICN follows a pull-based communication model, and congestion control is done by the consumer. Due to the fact that the consumer increases its congestion window only with the reception of data packets, it requires some round-trip time (RTT) to send large amount of interests. In the global network, which has a large RTT values, consumer's congestion window is increased slowly, and this leads to low throughput. Here we propose the ICN-PEP that can accelerate the growth of the consumer's congestion window by prefetching future data packets. We evaluated the ICN-PEP performance from the video streaming over the global ICN testbed, and our ICN-PEP could reduce the startup time of video streaming.