Anwire

New advanced services impose an underlying network able to support the increased requirements in terms of connectivity and Quality of Service (QoS) support. It is now widely recognised that the next generation wireless systems will be multi-access networks with the concept of “Always Best Connected (ABC)”. This can be achieved by the convergence, integration, and/or inter-working of all existing and emerging fixed and mobile (wired and wireless) networks including broadcast. The IP technology is a solution for this challenge. However, the structure and functionality of the IP layer model may not be sufficient and/or efficient in achieving the requirements of such integrated networks.

Additionally, the introduction of a generic architecture enabling efficient and always-on connectivity, distributed processing of reconfigurability management related features in various layers and an environment empowering adaptability in service creation, introduction, deployment and execution will be investigated based on integrated thematic efforts. This requires the combination of the currently defined methods known from classical protocol design, mobile radio design and computer science. From this synergy will emerge many novel concepts but also new questions currently not formulated. Ideally, one unique access technology would be sufficient for next generation wireless systems. But the wide range of services, environments and user requirements to be covered, ask for a family of access systems that seamlessly inter-operate with each other, forming the overall system. At this system, end-to-end QoS should be guaranteed at any time to any user. To do this, currently proposed QoS techniques for fixed IP networks, such as IntServ, DiffServ and MPLS, should be extended, combined and integrated into a unified QoS provision system. In short, a complete traffic management system is required, able to satisfy the required QoS of the user.

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Application architectures for the support of Reconfigurability and Adaptability

In order to facilitate the implementation of adaptability and reconfigurability features in mobile networks, the co-ordination of the introduction of advanced enabling applications is required. This field will be investigated to identify current efforts and also to introduce a generic framework for the introduction of application architectures for the support of Reconfigurability and Adaptability. Main issues to be considered (but not limited to) are the support of advanced business models, the dynamic service adaptation, deployment, registration and update by SPs (Service Providers), the dynamic user registration, advanced adaptability and reconfigurability management and control (network/terminal etc.), support of suitable security schemes, advanced Service discovery, Flexible Charging/Accounting/Billing schemes, Location and context awareness, protocol Adapters and protocol downloading mechanisms.

The need for the introduction of enhanced open APIs will be elaborated to enable flexible service provision and adaptability and reconfigurability management. These will be based on similar aspects that led to the development of existing open interfaces e.g. OSA. Co-ordination of respective integrated efforts will be supported.

User Requirements (0) : The real user requirements that should be taken into account during the early phase of system design can be classified according to various perspectives and metrics, including durability, fault-tolerance and manageability. First, the user should be capable of maintaining a persistent connection to servers of interest. The model of peer-to-peer systems, although criticized for its business potential, has highly been adopted by the Internet community, due to the provision of a high degree of connectivity in a transparent fashion, even in the presence of failures. Users can always retrieve data regardless of the server location, whilst queries are optimized to fetch the nearest replica, exploiting locality and minimizing the necessary resources. Local loop unbundling aims at fast, always-on Internet access. These efforts have their counterparts in the mobile industry via the integration of Wireless LANs and 3G systems. The underlying objective is to combine a cheep, flexible, easily deployed but untrustworthy technology with a stable, resilient infrastructure. Users registered with a 4G provider would require that they be always connected enjoying an acceptable level of quality of service, while roaming among diverse systems including direct video. Thus, the issue have been split into: -Requirements on connectivity -Requirements on servive provision -Requirements on adaptibility and reconfigurability
Private list for “Requirements” Task force (0)

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Research agenda

In this section we identify the key research challenges in the future software systems enabling seamless service provisioning in heterogeneous, dynamically varying computing and communication environments. The division is not orthogonal; same or similar research topics and issues appear in more than one research challenges. We have divided the research space into the areas of:

• Adaptable Service Architectures
• Efficient and “always on” connectivity
• Application architectures for the support of Reconfigurability and Adaptability
• Generic Requirements & System Concepts
• System Integration

Announcements

• 5th European Personal Mobile Communications Conference
• ANWIRE Workshop on “Wireless, Mobile & Always Best Connected”
• Two submitted papers in the IST Mobile & Wireless Communications Summit 2003
• ANWIRE in the 4G Forum 2003, London, 27-28 May 2003
• Submitted paper to PIMRC 2003
• Summer School in Lisbon.

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