Named Data Networking (NDN) is a promising Information-Centric future Internet architecture. Besides its recognized potentialities as a content retrieval solution in wired domains, NDN has been also recently considered as an enabling technology for the Internet of Things (IoT), thanks to its innovative features like named-based routing and in-network caching. In particular, the possibility of caching at intermediate nodes can be especially useful to reduce the retrieval delay, and limit the network traffic and the load on data producer. However, unlike traditional Internet contents, IoT data are typically transient and periodically refreshed by the producer. At the same time, unlike Internet routers, IoT devices can be resource-constrained, with limitations in terms of energy, storage and processing capabilities. Therefore, caching algorithms designed for (intransient) Internet traffic and Internet routers do not well suit IoT domains. In this paper, we consider a wireless NDN-IoT network and propose a novel distributed probabilistic caching strategy that relies on the freshness of data and on potentially constrained capabilities of devices (energy level and storage capacity). The proposed solution has been evaluated through simulations with ndnSIM and results show that it outperforms traditional NDN caching mechanisms in terms of data retrieval and network energy efficiency.

Information-Centric Networking (ICN) is a communication paradigm for the future Internet that matches the pattern of information-oriented applications and provides in-network caching. Thanks to such properties, ICN has been recently considered as a solution for the IoT. However, IoT shows challenging features: many devices are resource-constrained and applications usually originate transient information. As a consequence, ICN-IoT solutions requires new design choices. Among them, it is crucial understanding if constrained devices can successfully implement ICN caching and forwarding functionalities, and what are the delivery performance. To provide hints in such a context, in this paper we evaluate the performance of different caching/replacement policies and forwarding strategies in an ICN-IoT wireless network. A novel forwarding scheme is also defined to reduce the load on constrained devices. Simulation results show that the devised caching and forwarding operations are beneficial for delivery performance: they reduce the traffic volume and save the devices’ energy resources.

Internet of Things (IoT) systems have become the central part of future internet research. In the IoT, heterogeneous devices are connected to sense the environment or to observe individual tasks. Many research fields use the seamless IoT infrastructure to interact with the integrated devices and diverse services. Furthermore, IoT is a promising technology to increase the comfort and quality of life and opens new ways of interaction between people and things. Real life applications in healthcare sectors, home automation, industry, smart cities, monitoring scenarios, etc. benefit from the low-cost wireless technology in IoT on one hand. On the contrary, IoT system has many challenging features: many devices are resource-constrained with energy and memory, are highly heterogeneous and their applications continuously transmit transient information. Furthermore, Requesting, delivering and updating the information in IoT are challenging because of the resource limitation. Named Data Networking (NDN) is one of the latest and the most important Information-Centric Networking (ICN) approaches which uses named data to deliver data in the network. Based on hierarchically structured names, NDN matches the application pattern of IoT systems and uses its communication concept to optimize the power supply and distribute the data efficiently in the network. This paper discusses the main concepts of NDN including naming, routing, forwarding and caching in IoT infrastructure. To achieve an efficient system in different applications scenario in future IoT, an IoT architecture is proposed via NDN called IoT-NDN. The objective of this research work is the design and development of IoT-NDN for different fields in IoT systems. The deployment of IoT-NDN is challenging and requires proper design choices. The proposed solution and challenges of all mentioned issues are discussed in this paper.

In future Internet research, content centric networking (CCN) is a new promising approach. CCNx has been introduced recently as an open source protocol suite for CCN and implementation base for practical research. In wireless sensor networks (WSNs) research, data or content centric approaches like in-network processing and data aggregation are important. While the principle of CCN is a suitable approach in WSNs, the CCNx protocol suite designed for PCs is not applicable to resource-constrained WSNs. Therefore, we design, implement and evaluate a lightweight variant of a CCN protocol specifically for WSNs called CCN-WSN as a lightweight alternative to implementing IP for sensor networks. Key concepts of CCNx protocol are integrated but a variety of aspects are revised to meet the memory and computational constraints of sensor nodes and communication patterns in WSNs. E.g. the message format is simplified and some fields are omitted completely. Instead, we propose a flexible naming strategy which extends the functionality of content names to add small amount of data in interest messages. For performance evaluation a challenging time-synchronization application was implemented with CCN-WSN to demonstrate the flexibility of the approach and a comparison with a reference protocol for data dissemination called AutoCast is presented.

Internet of Things (IoT) systems have become a main part in future internet research. In IoT, heterogeneous devices are connected to sense the environment or to observe special tasks. Many research fields use the seamless IoT infrastructure to interact between the integrated devices and diverse services. Considering the healthcare research, the number of elderly people is rapidly growing and they need more support in their life. Therefore, a new technology called Ambient Assisted Living (AAL) has been proposed to better increase the life quality of elderly people. In AAL, the devices are mostly connected wirelessly to each other and/or to a healthcare service centre. It is challenging to build such a system and its deployment should be seamless and flexible. Therefore, IoT provides all main characteristics necessary for AAL environment and applications, including heterogeneous devices. However, IoT devices are resource-constrained with energy and memory. Recently, Information-Centric Networking (ICN) has been established as a best communication paradigm for future internet, particularly in IoT. Based on hierarchically structured names, ICN matches the application pattern of IoT systems and provides an efficient and intelligent communication paradigm for both IoT and AAL (IoT-AAL) technologies. In this work, we design an IoT architecture for AAL via ICN approach which will effectively improve the performance of communication between the heterogeneous devices and services integrated in IoT-AAL.