چکیده:
The Internet of Things and Services (IoTS) has encouraged the development of service provisioning systems in respect to Smart City topics. Most of them are operated as heterogeneous systems which limits end customers’ access and contradicts with IoTS principles. In this paper, we discuss and develop a reference model of an interconnected service marketplace ecosystem. The prototypical implementation incorporates findings from an empirical study and lessons learned from research projects. The elaborated ecosystem enables service request roaming between different parties across system boundaries. The paper presents a feasible centralized architecture, introduces involved parties and parts of a developed message protocol. Why a contracting mechanism is indispensable for request roaming is also outlined. The model’s feasibility is demonstrated by means of a current electric mobility use case: providing access to foreign charging infrastructure without multiple registrations. This work contributes to simplify the data exchange between service platforms to improve Smart City solutions and to support travelers with intelligent mobility applications.
خلاصه ماشینی:
"Another benefit of the interconnected service marketplaces is that the services and infrastructure of the service providers are used more often, the service consumers can build more sophisticated mobility solutions and that the end customers 1 Even though the paper focuses on the mobility domain, which is related to smart cities, its concepts can be applied and adopted to other domains which make use of ICT service functionalities.
A sophisticated contracting mechanisms has been incorporated to manage business relationships between service providers and consumers which are registered on different marketplaces (Strasser, 2015).
, 2015); i) marketplaces have no comprehensive set of appropriate Application Programming Interfaces (API) in place, ii) a communication protocol for interconnectivity does not exist, iii) mechanisms for contract signing are not implemented, iv) fear of maintaining 1:n platform connections and v) fear of losing business when collaborating with others.
The data object diagram is shown to justify the statement that the implementation effort of a marketplace to connect to a directory agent and to authorize an end customer across marketplace ICT boundaries has its limits.
The study has shown a feasible approach, already acknowledged within the file sharing domain, to connect (mobility) service marketplaces within smart cities without falling into the old pattern of designing n:m networks, also called complete graphs.
The prototypically implementation consist of three service marketplaces (with rudimentary functionality to demonstrate end customer authentication) and the directory agent which roams marketplace requests between the marketplaces according to cross-system business relationships."