The need for flexible and more effective radio access has led to the concept of service delivery over jointly optimised heterogeneous terrestrial radio systems (composite radio environments). The heterogeneous networks consist of diverse radio segments interconnected by an IP backbone and jointly operated. The composite network hosts multimode wireless terminals, capable of alternatively operating in the diverse radio segments available in the infrastructure. The EU project CREDO, conducted experiments to enable the delivery of services relevant to the Athens 2004 Olympics. The Athens 2004 Olympics provided a challenging context because of the high traffic volumes and the demand for diverse content services associated with rigid quality and cost-efficiency requirements. CREDO had to address several technical issues prior to the realisation of the validation experiments. These were related to the prototype user terminals, the Network and Service Management System (NSMS), the appropriate selection and characterisation of service applications and user profiles, and the definition of appropriate experiment scenarios and traffic background conditions. The composite network of CREDO included a cellular network (GPRS), a WLAN network and a broadcast radio network (DVB-T). In order to render terminals capable of obtaining IP-based services, hardware and software architecture tools were developed. With the target of an optimal system, an advanced Network and Service Management System (NSMS) was developed for the coordination of the radio segments towards achieving traffic load balancing. The wireless terminals, through a management module called Terminal Station Management System (TSMS) enable the realisation or participation in sophisticated selections of the appropriate radio technologies for a particular context, exploiting the multimode capability, inherent in composite radio environments. The TSMS on a terminal interacts with NSMS towards optimised selection of the radio segment to which the terminal is assigned. The optimisation opportunities offered by the composite networks, as seen after the CREDO project, increase the feasibility of providing advanced Quality of Service (QoS) services to the end users, taking into account cost-efficiency.
Composite Radio and Enhanced service Delivery for the Olympics
Discover other articles in the same domain of application
Policy making and guidelines
RoRI and FAIRsFAIR to partner on FAIRware initiative | Funders across UK, Europe and Canada join forces to develop new open research tools.
7 October 2020