Rezultaty
The objective of the new forum is to formulate visions on strategic future research directions in the wireless field, among industry and academia, and to generate, identify, and promote research areas and technical trends for mobile and wireless system technologies. It is intended to constructively contribute to the work done within the UMTS Forum, ETSI, 3GPP, IETF, ITU, and other relevant bodies regarding commercial and standardisation issues derived from the research work.
The forum is open to all interested parties. Members are expected to contribute papers and ideas. In 2001, the forum will organise three working sessions and a workshop towards the end of the year.
The WWRF is a further development of work started during 2000 in the Wireless Strategic Initiative (WSI). The Wireless Strategic Initiative was started in May 2000 by Alcatel, Ericsson, Nokia and Siemens as a project under the Information Society Technologies programme of the EU.
The WSI project organised an invited Think Tank of international experts to develop first concepts for the wireless field. The Think Tank met three times during 2000 and the results will be discussed at a workshop to be held in Brussels on December 12, 2000 and soon released. The partners of the WSI project expect that the results of the Think Tank will form a useful starting point for the work of the Wireless World Research Forum.
The WSI reference model describes the Wireless World as a set of concentric spheres inhabited by networked Communication Elements (CEs). CEs are the generic representation of devices and nodes in the Wireless World as visualized in Figure 4 1. The functions incorporated in a CE are provided by different building blocks, briefly explained below.
The "Cyberworld" building block hosts all application-specific functionality. It relies on a generic service infrastructure provided by the "Open Service Platform" and exploits it to implement these applications and services. It will have to possess means to generically describe and explain their characteristics and demands to ensure that the underlying infrastructure is being used efficiently and to the user�s satisfaction.
The "Open Service Platforms" building block is responsible for providing a flexible and generic service infrastructure to the CyberWorld to facilitate the creation of new services according to users' and operator's needs. The restrictions imposed on the creator of services have to be reduced to a minimum.
The "Interconnectivity" building block can also be referred to as the Networking part of the Wireless World reference model. The functions located there take care of linking together CEs from different spheres and maintain and manage these links even when they are subject to change of network topologies or access networks.
The "Access" block implements all aspects of the physical connection(s) between different CEs. These may be either radio or other types of connections. Due to the hierarchical structure of the reference model, a connection in higher spheres could use multiple connections in underlying spheres, relying on services provided by the "Interconnectivity" block.
Reference points have been defined between the building blocks of a Communication Element and among different Communication Elements.
In addition to the static view of the model outlined above, the document also contains a first attempt to describe the dynamic behaviour of the reference model in the annex.
The work on the reference model for the Wireless World is well advanced and based on a good understanding of the requirements and of the working of future communication systems. There is, however, research work remaining to be undertaken that exceeds the boundaries of this limited study. Some issues to be addressed by future work in WWRF or projects proposed in WWRI include:
A formal description of the semantics of the Reference Points;
A methodology to define communications via the Reference Points;
A functional distribution and allocation to building blocks;
Dynamic representations of major transactions;
More details of possible business models.
This report aims at presenting the technological principles and possible system options for the different elements of the reference model, which is described in detail in the WSI deliverable D9 [3]. Only its basic structure will be presented in this document as a basis for the structuring of the range of presented technologies.
The wide variety of research issues identified by frequent input to the Wireless World Research Forum and other relevant publications have been grouped together into technology areas, which are correlated to the building blocks of the reference model. The technology areas are briefly described and motivated. Their importance/priority for realization of "Wireless World"-objectives is stated. Interdependencies between the different areas have been identified where applicable, but will be dealt with in Deliverable D11 [4] "Technology Roadmap for the Coming of the Wireless World", since the dependencies have direct impact on the timelines for the coming of the wireless world.
The WSI reference model describes the Wireless World as networked Communication Elements (CEs). The functionalities integrated in a CE are provided by different building blocks listed and briefly explained below. The user's environment should be constantly tailored and personalised to his likes, habits and situation. All services of the "Wireless World" should be provided with the highest integrity and security in mind.
The solutions applied in this domain must offer holistic, converged communication appliances for fixed as well as mobile information and communication. Devices, systems and applications must operate in harmony, seamless to but taking full advantage of available technologies. By building the development of information and communication systems for the Wireless World, quality of life and an enhanced user experience can be offered.
The "Cyberworld" block hosts all application-specific functionality. It relies on a generic service infrastructure provided by the "Open Service Platform" and exploits it to implement these applications and services. It will have to dispose of means to generically describe and explain their characteristics and demands to ensure that the underlying infrastructure is being used efficiently and to the user�s satisfaction.
The "Open Service Platform" is responsible for providing a flexible and generic service infrastructure to the CyberWorld, in order to facilitate the creation of new services according to users and operator's needs. The restrictions imposed on the creator of services have to be reduced to a minimum possible.
The "Interconnectivity" block can also be referred to as the Networking part of the Wireless World reference model. The functions located there take care of logically linking together CEs from different spheres and maintain and manage these links even when they are subject to change of network topologies or access networks.
The "Access" block implements all aspects of the physical connection(s) between different CEs. These may be either radio or other types of connections. Due to the hierarchical structure of the reference model, a connection in higher spheres could use multiple connections in underlying spheres, relying on services provided by the "Interconnectivity" block.
The structuring of the research areas is described in Chapter 5. The structure of the document also shows how the technology areas and technologies relate to the different blocks of the Communication element defined in the reference model and mentioned in the previous paragraph. In order to enhance the structuring of the different areas, the information is to a great extent provided in tabular form and further augmented by descriptive text where appropriate.
The Concluding remarks highlight the confidence in the resulting structure and the relevance to the project's and the IST program's objectives by pointing out how these results of the WSI project (the framework of reference model & technology reports) can be exploited and applied and how they provide help to research groups to align and structure their work to jointly pursue the goal: Making the visions of the "Wireless World" become reality.
The aims of this roadmap include mapping of socio-economical and technological landmarks to the technological state of the art and to expected technological tendencies. Definition and development of the features and technologies for the 'Wireless-World' also has such a multi-faceted relationship between social, economical, legal and technological topics: the wireless world aims towards the pervasive use of mobile technology in all facets and circumstances of life; therefore the 'Timeline and Roadmap for the Coming of the Wireless World' encompasses a wide range of connected aspects.
At the centre of the development efforts is the user, and the applications the future wireless world will facilitate are user centric high quality and high-grade multi-media services in a seamlessly integrated pervasive mobile communication environment. In the initial phase of the WSI project, the leaders of the wireless industry and academia developed in the 'think-tank' the visions of how this future wireless world may look like. These visions have, beside other predicted future information and communication society scenarios, formed part of the input material to the analysis of technological requirements for the wireless world communication systems. Based on these requirements WSI identified a reference model (see [1]) for future communication systems as well as the various system options (see [2]) that may occur when facilitating the wireless world, this roadmap aims to project reference model and technologies on a coherent timeline.
The methodology to develop this roadmap included the analysis of the ISTAG [3], CyPhone [4] and UK foresight scenarios [5], they were used to identify possible future usage behaviours. Sets of requirements for future communication equipment and systems were derived from this expected usage behaviour. The derived requirements do not only cover technology, but include economical as well as legal and 'we need a new way of thinking' areas.
Technological requirements towards the wireless world range from the future user interfaces, mobility aware service and application execution platforms, network technology supporting pervasive connectivity with QoS on demand guarantees to more flexible and efficient use of the radio spectrum available. To finally serve these future requirements, new hardware and software technologies including display, man-machine interface, inter-machine communication mechanisms, improved memory, processing and battery performance as well as new software and system design approaches are required. For the non technical parts, new ways of thinking in terms of regulation, property rights, resource sharing and business models need to be considered and eventually implemented.
The main focus however is on the technological side, the evolution from second to third generation wireless communication systems has already required great progress in device capabilities in terms of processing, memory, display and energy saving technologies. However, definition of the wireless world will require further advances in these areas as well as research into a wide range of technologies from other technologies. Development and evolution of future communication networks encompasses all system layers, requiring research efforts on the lower connectivity layer, into networking technology as well as into service provision and smart adaptation mechanisms; examples include the adoption of e-Commerce functionalities, introduction of new display and man-machine-interface (MMI) technologies, information retrieved from adjacent sensor networks, etc. Any outlook into the future development and possible future directions of mobile communication systems will be influenced by the availability of such related technologies as well as on the availability of base technologies (e.g. faster semiconductors, MEMS, etc.) and integrated system concepts. This WSI deliverable, the 'Timeline and Roadmap for the coming of the wireless world' grasps the most relevant technological enablers and projects their development onto a roadmap with a coherent timeline.
The deliverable presents the point of emergence as well as their expected/planned application and provides a timeline about when targeted research efforts into these areas may deliver the enablers for the 'coming of the wireless world'. However, as aforementioned, not only technology has to be furthered but also non-technical issues have to be resolved to facilitate the system beyond 3G. Therefore the roadmap raises as well non-technical (yet technology related) issues including the handling of intellectual property rights for hard and software IP, the problem of managing the originators rights on contents transferred into the digital domain and finally the issues of legal challenges which may hinder or even prevent the ownership or use of software re-configurable beyond 3G radio equipment.
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