Caching policies in NDN-IoT architecture

The named data networking (NDN) has emerged as a promising candidate of future Internet architecture as an alternative to traditional Internet. The NDN taken from broad field of information-centric networking (ICN) is based on content name irrespective of its physical location to get rid of address management and NAT traversal problems. The benefits associated in terms of reliable, efficient data delivery, content security, and in-network caching have raised NDN as a forthcoming networking solution for Internet of Things (IoT) challenges. Several constraints associated with IoT devices such as low processing capability and limited memory with high energy efficiency requirement impose burden on the use of IP for IoT. The NDN-IoT in-network caching provides solution to overcome these constraints and presented alternative implementations. This paper discusses several NDN-IoT caching algorithms with their strategies, advantages, parameters evaluated, and simulators used for study. The various research challenges associated with caching in NDN-IoT environment have also been presented in this study.