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- 1.1The technology assessment
- 1.2Nodes definitions
1.IntroductionnSHIELD project proposes a layered architecture to provide intrinsic SPD features and functionalities to embedded systems. In this layered architecture workpackage 3 is responsible for the node layer that represents the lower level of the architecture, a basement constituted of real embedded devices on which the entire project will grow. Some SPD technologies that will be introduced with this workpackage are the extension and evolution of the results obtained with pSHIELD project while, in most cases, start to be investigated in nSHIELD itself. As already outlined in the TA, workpackage 3 aims to create an Intelligent ES HW/SW Platform that consists of three different kinds of Intelligent ES Nodes: nano node, micro/personal node and power node. These three categories of embedded systems will represent the basic components of the lower part of an SPD Pervasive System that will cover the possible requirements of several market areas: from field data acquisition, to transportation, to personal space, to home environment, to public infrastructures, etc. This deliverable is focused on the assessment of the SPD technologies that will be studied and developed in work package 3 and that are functional to the nSHIELD SPD applications (Workpackage 7). These technologies will be implemented in the prototypes that will be developed in workpackages 6 and 7 and that will be part of the nSHIELD scenarios demonstrators.
The SPDN technology assessment will validate the nSHIELD node technologies by considering
This document will report the current available SPDN technologies, HW and SW module able to implement the SPD functionalities required for each approved technology. Advancements beyond the current State of Art (SoA) will be addressed by identifying the technology gaps that required new solutions for achieving the nSHIELD objectives. These technology gaps will help to identify the risks and their impacts on the design phase. Conclusions are confirming that the accessed SPDN technologies satisfy the nSHIELD requirements and specifications and that no constraints are imposed on the design of SPDNs. 1.2Nodes definitionsnSHIELD SPD architecture follows very closely the architecture introduced in pSHIELD project and is based on four layers:
The node layer represents the basement of the nSHIELD SPD Pervasive System and provides the basic components in terms of ES. The node layer consists of three different categories of Embedded Nodes which can be considered three node levels of increasing complexity, features availability and computational power:
The definition of these three categories follows the one introduced in pSHIELD. Nano Node level typically consists of small and resource limited devices, both in terms of hardware and software (i.e. wireless sensors). Because of their massive distribution in the environment, nano nodes could become an interesting target for attacks and hacking. Micro/Personal Node level consists of devices richer than the Nano Nodes, in terms of hardware and software resources, network access capabilities, mobility, interfaces, sensing capabilities etc. The specific functions of a Micro/Personal Node are generally referred to:
Power Node level represents the first level of massive data elaboration of the SPD pervasive system, with the peculiarity that the computing power is provided directly on the field. The classification of the nodes in three different classes is provided with more details in the following table. The table specifies the node hardware, software, networking capability, mobility, interfaces and sensing capabilities that are used as criteria for the classification of the nodes. Table – Characteristics of pSHIELD nodes
Some examples of nodes that can be classified in the identified categories are:
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