A proactive multi-level cache selection scheme to enhance consumer mobility support in Named Data Networking
Lanlan Rui, Suijia Yang, Haoqiu Huang · International Journal of Distributed Sensor Networks · 2017
Resending Interest packets to support consumer mobility in Named Data Networking usually leads to latency, which can severely affect the performance of applications with strict latency requirements. We propose a proactive multi-level cache selection scheme to enhance the consumer mobility support in Named Data Networking. This scheme focuses on a handover situation, wherein the consumer disconnects from a network or moves to another access router before receiving the requested content. The proactive multi-level cache selection is designed to prefetch contents into a subset of the neighboring routers, to achieve a trade-off between the latency and cache cost. In particular, this approach is feasible for a two-level router structure and scalable to a multi-level structure. The results obtained from simulation show that compared with equivalent schemes such as the original no-prefetch scheme in the Named Data Networking and the all-prefetch scheme, proactive multi-level cache selection for a two-level router structure can provide a better handover performance to some extent; the user experience is improved and the negative impacts of consumer mobility are alleviated.