SCaN-Mob: An opportunistic caching strategy to support producer mobility in named data wireless networking

In recent years, Information-Centric Networking (ICN) architectures have been proposed to deal with many of the existing constraints of the current IP-based host-centric Internet model. The Named Data Networking (NDN) is an example of ICN, which is designed to meet many of the mobility challenges of IP-based networks. However, despite its benefits in supporting mobility of consumers, such architectures still lack efficient solutions for mobile producers, in particular, to improve contents availability during a producer’s handoff. In this paper, we introduce the Shared Caching in Named Data Networking Mobile (SCaN-Mob) strategy. It minimizes the effects of the mobile producers’ unavailability in NDN by creating an interest forwarding strategy and a cache replacement policy for seamless handoff of producer nodes in wireless networks. We proposed two SCaN-Mob approaches to mobile producer support: SCaN-Mob Full that uses all edge caching capacity, and SCaN-Mob AP that uses only the access point’s caching capacity. Simulations results show that SCaN-Mob improves the interest satisfaction rate, while decreases the delivery delay when compared to naive NDN and increases cache hit ratio concerning the other compared solutions.