LPECN

Abstract

Named Data Networking (NDN) is designed to address several limitations of the current Internet, such as inefficient content delivery, mobility and security. Pending Interest Table (PIT) is one of the fundamental building blocks in NDN. Its unique design contributes various advantages such as stateful forwarding plane, loop detection, similar request aggregation, multipath forwarding and multicast. However, PIT size may become a bottleneck in network performance in the presence of bursty traffic or unresponsive consumers. Therefore, we propose a congestion control scheme that leverages PIT placement and explicit congestion marking. We have used PIT per outgoing face placement to efficiently limit the Interest sending rate according to the available capacity of the link, which can avoid congestion in the reverse path. In addition that, we utilize Negative Acknowledgement and explicit congestion marking to efficiently detect and limit interests from non-responsive consumers. From the simulation result, we have shown that our proposed scheme can efficiently handle congestion even in the presence of non-responsive consumers.