دانلود رایگان مقاله شبکه اطلاعات محور برای ارتباطات M2M

Abstract

The European Telecommunications Standards Institute (ETSI) recently released a set of specifications for a reference architecture to globally access resources provided by machines over heterogeneous technologies in an interoperable way through a RESTful interface. Resources are named through Uniform Resource Identifiers (URIs) at the application layer and typically reachable at the network layer through IP connectivity. Such an approach can be used also to access extremely resource-constrained devices, provided that lightweight interactions with a gateway, remotely exposing their resources, are granted. Among potential alternatives to support communication between the gateway and such constrained devices, we investigate the Information-Centric Networking (ICN) paradigm, gaining momentum in the future Internet research arena. It differs from the host-centric IP networking in that it cares for the content to retrieve instead of the device hosting it. By directly using content names at the network layer and a receiver-driven communication, ICN well fits the requirements of many machine-to-machine (M2M) applications that are information-centric in nature and rely on a publish-subscribe service model. In this paper, we propose an ICN-based solution to be deployed on top of constrained devices whose named resources are exposed at a wide area scope by an M2M gateway. The proposal aims at ensuring easy interoperability with ETSI M2M specifications, thus allowing remote applications to access the resources of ICN-enabled nodes. To showcase the viability of our proposal, a test-bed has been deployed leveraging low-cost devices for home automation. Experimental results confirm a good performance in terms of device resources consumption, easiness of implementation and latency of communication.

7. Conclusion

In this paper, we presented a communication framework that leverages the ICN paradigm for local M2M communications and enables global access to the resources through the ETSI M2M architecture. ICN and, in particular, the NDN instantiation, exhibits unique features that well suit the requirements of M2M communications (e.g., information-centric applications, group-based communications). Moreover, the hierarchical naming scheme is quite similar to the one devised within the ETSI M2M reference architecture, hence facilitating the interoperability with remote entities. We made the best of such factors and our work capitalized on the design of an ICN-based framework to support lightweight interactions in an M2M Area Network with resource-constrained devices. We have assessed the viability of the proposed framework through the deployment of a test-bed mimicking a home network with off-the-shelf low-cost devices equipped with an IEEE 802.15.4 interface and embedding environmental sensors. The OM2M open source platform has been used to implement the ETSI M2M system. It has been integrated with the ICN-capable Home Area Network through an interworking proxy capability deployed at the home Gateway.