Content-oriented networking as a future internet infrastructure: Concepts, strengths, and application scenarios

摘要: While the current Internet architecture is designed based on the host-to-host communication paradigm, the real Internet usage shows that content-oriented traffic is dominant. Good examples of this paradigm shifting are Content Delivery Networks (CDNs) and Peer-to-Peer (P2P) Networks. A CDN is a system of cooperating networked computers and it provides content delivery services to end users transparently hiding its network architecture. P2P is a cooperative network constructed by users’ participations for file sharing. In these networks, users do care about not from whom they retrieve data but the data itself. A recent report analyzes that most of the Internet traffic is dominated by P2P traffic which does not conform to the host-to-host paradigm [1]. Due to the inconsistency between the Internet design and the real usage, there is an unnecessary indirection overhead when users try to retrieve desired data [2]. In consequence, it is needed to redesign the Future Internet based on the content-centric paradigm to provide data/contents to the users efficiently. In this paper, we define the concepts of content-oriented (networking) paradigm. Also, strengths and application scenarios of content-oriented networks (CONs) will be investigated. This paper is organized as follows. First, we describe the concepts of CONs. And then we discuss strengths and application scenarios of CONs. We also introduce some current research activities on the CONs.