A Multi-path Congestion Control Mechanism for Named Data Networking

摘要

In named data networking (NDN) architecture, data can be obtained from multiple content producers through multiple paths, and the consumer does not know where the content holder is, which makes the end-to-end congestion control mechanism in traditional networks invalid. Congestion control is a challenging issue in multi-source and multi-path in NDN architecture. In this paper, we propose a multi-path congestion control mechanism (MCCM), including multi-path design and congestion control. We design a path tag to uniquely mark a sub-path in transmission process. Then, we propose random multi-path forwarding for exploring path diversity and use the path tag to design the directional forwarding strategy. Moreover, we propose a path management scheme to manage multi-paths that have been explored. All sub-paths are explored in proposed scheme, that is, the consumer knows where the content is held. Therefore, we propose a congestion window adaptation algorithm for NDN muti-path scenario. Simulation results show that MCCM discover all paths in the network, effectively avoid congestion, improve throughput, and reduce delivery time.