earticle

영어

Content Centric Network (CCN) is proposed to facilitate future multicast services. The special attributes of the CCN are the named-data scheme, receiver-initiated transmission, in-network caching, and support of multicasting. The CCN node has three main components: Content Store (CS), Pending Interest Table (PIT), and Forwarding Information Base (FIB). Among the components, the content store caches some portion of content expecting to reuse the content in near future by other clients. This paper describes that when CCN nodes reserve a reasonable amount of the content store memory for the shared content of multiple users, the network provides stable transmission performance due to in-network caching and multicast transmission. On the contrary, if the CCN nodes do not reserve a proper amount of content store space for the shared content, it results in degrading the transmission performance. The simulation results indicate that it is better to employ a FIFO-based replacement algorithm for a shared content flow than to choose usage-based algorithms such as LRU and LFU.