The fifth generation of cellular communication systems is foreseen to enable a multitude of new applications and use cases with very different requirements. A new 5G multiservice air interface needs to enhance broadband performance as well as provide new levels of reliability, latency and supported number of users. In this paper we focus on the massive Machine Type Communications (mMTC) service within a multi-service air interface. Specifically, we present an overview of different physical and medium access techniques to address the problem of a massive number of access attempts in mMTC and discuss the protocol performance of these solutions in a common evaluation framework.
The term Internet of Things refers to the networked interconnection of objects of diverse nature, such as electronic devices, sensors, but also physical objects and beings as well as virtual data and environments. Although the basic concept of the Internet of Things sounds simple, its application is difficult and, so far, the respective existing architectural models are rather monolithic and are dominated by several limitations. The paper introduces a generic Internet of Things architecture trying to resolve the existing restrictions of current architectural models by integrating both RFID and smart object-based infrastructures, while also exploring a third parameter, i.e. the social potentialities of the Internet of Things building blocks towards shaping the "Social Internet of Things". The proposed architecture is based on a layered lightweight and open middleware solution following the paradigm of Service Oriented Architecture and the Semantic Model Driven Approach, which is realized at both design-time and deployment-time covering the whole service lifecycle for the corresponding services and applications provided.
The challenge before reaching the production stage for 5G is to assess its performance in large-scale facilities. EU-funded 5G PPP project 5G EVE is addressing this challenge by building a distributed and interworking 5G endto-end facility in Europe across various sites. In this paper we explain the architecture of the 5G EVE end-to-end facility and present each site with their respective features, including the interworking among them, which provides a clear add-on to country-based trials. The 5G EVE site facilities are designed to offer automated network slice deployment tools and a new validation framework. This framework will offer tools for testing 5G radio and various core solutions. It will also allow experimenting and benchmarking different classes of end-toend network slices and services. These services are defined by a set of selected vertical use cases in sectors like energy, transport, smart cities, tourism, and manufacturing (Industry 4.0). 5G EVE's large-scale trials are being deployed in four European countries: Italy, France, Spain, and Greece.
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