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Due to the growing market and research interests on communication protocols for applications that require little or no human intervention, called Machine-to-Machine (M2M) applications, the European Telecommunications Standardization Institute (ETSI) founded in 2009 a Technical Committee on the topic, which has released its first complete set of technical recommendations in October 2011 as ETSI M2M Release 1. The standard is agnostic with respect to both the application domains in which it can be used, ranging from, e.g., smart grid to personal health systems, and the underlying data transport and access technologies. We demonstrate the feasibility of an ETSI-compliant complete end-to-end system, which uses the Constrained Application Protocol (CoAP) protocol under definition at the Internet Engineering Task Force (IETF), showing its potential to meet the expectations of M2M applications of practical interest.

In the Internet of Things (IoT) the edge devices often rely on gateways to connect to the Internet, to reduce costs and energy consumption. For those scenarios where the gateway itself does not have a wired Internet connection, LTE is a candidate solution due to its high spectral efficiency, bandwidth, and coverage. In this paper, the suitability of LTE for the interconnection of aggregated edge devices is investigated. The study is carried out under the assumption that the Constrained Application Protocol (CoAP), which is becoming increasingly popular, is used. The performance analysis is carried out through packet-level simulation with the open source simulator ns3.