An Efficient Content Store-Based Forwarding Scheme for Internet of Things

Abstract

One of the main advantages of information-centric networking (ICN) is that a requested piece of content can be retrieved from a content store (CS) at any intermediate node, instead of its original content producer. In existing ICN designs, nodes forward Interest packets mainly based on forwarding information base (FIB). FIB is constructed from name prefixes registered by content producers with a list of next hops to the name prefixes. The ICN forwarding engine uses those information to forward Interest packets towards corresponding content producers. CS information of a node is currently used only for checking the availability of cached content objects at the node and is not considered in the data plane of existing ICN forwarding mechanisms. This paper highlights the importance of CS information in an ICN forwarding mechanism and enables neighbor CS information in the data plane to improve the cache hit ratio and forwarding efficiency, especially for resource-constraint Internet of Things (IoT). We propose an efficient CS-based forwarding scheme for IoT. The proposed forwarding scheme exploits CS information of neighbors to find efficient routes to forward Interest packets toward nearby nodes with corresponding cached content. For that, we carefully design an efficient way for CS information sharing using counting bloom filter. We implement the proposed scheme and compare with state-of-the-art ICN forwarding schemes in IoT. Experimental results indicate that the proposed forwarding scheme achieves a significant improvement in terms of cache hit ratio, energy efficiency, content retrieval latency, and response rate.

An Efficient Traffic-aware Caching Mechanism For Information-centric Wireless Sensor Networks

“…This reduces the number of unique content objects to be cached and lowers the content diversity in the content store (CS) of nodes. In the previous work [14,15], we proposed to address the above issue by enabling CS information of nodes in the data plane and coordinating content caching with interest packet forwarding to increase the network performance. Although above schemes enhance the usage of popular content objects to improve the cache hit ratio, the traffic pattern and node properties of resource-constrained IoT networks are not considered.…”

“…To improve the diversity of cached content in a neighborhood, we reuse the idea of CS information exchanging which is implemented in our previous work [14,15]. Our proposed idea makes CS information available in the data plane to coordinate CS of nodes within its neighborhood.…”

An Efficient Distributed Content Store-Based Caching Policy for Information-Centric Networking

“…CS of nodes in ICN still operates independently while Interest packet forwarding mainly uses forwarding information base (FIB). In the previous work [8], we exploit CS information of nodes for forwarding and content retrieval. This paper highlights the importance of coordinating content store information of ICN nodes to improve the performance of in-network caching in ICN.…”