A CUBIC-Based Explicit Congestion Control Mechanism in Named Data Networking

摘要

As named data networking (NDN) continues to evolve into a mature and production network, a robust and efficient congestion control mechanism has become a fundamental requirement for the success and wide deployment of NDN. In this paper, upon exploring the unique hop-by-hop Interest forwarding feature, based on the CUBIC, we develop a novel congestion control mechanism for NDN. Our congestion control mechanism, namely EC-CUBIC, borrows the core idea of CUBIC to control the sending rate of interest packets on consumers. Specially, in routers, we queue the data packets in every face and according to the queue length to send a congestion signal to consumers, upon which consumers take action timely for the congestion. In addition, we implement this mechanism in ndnSIM, an NS3-based simulator, and conduct a number of experiments with various settings to evaluate the link utilization and packets-drop rate of the proposed algorithm. Comparing with the naive congestion control algorithm in NDN, our experimental results demonstrate that EC-CUBIC perform bette in terms of high link utilization and low packets-drop rate.