Paper I: Towards an ANWIRE B3G Wireless System Integration Architecture
M. Siebert, H. Chaouchi, A. Jahan, I. Demeure, I. Armuelles, L. Palma, L. Correia, J. Liu, M. O’Droma, V. Friderikos, W. Xing, N. Alonistioti, “Towards an ANWIRE B3G Wireless System Integration Architecture”, ANWIRE 1st International Workshop on “WIRELESS, MOBILE & ALWAYS BEST CONNECTED”, University of Strathclyde, Glasgow, April 22, 2003

Paper Ia: Policy based management framework for Always Best Connected users
Hakima Chaouchi, Guy Pujolle “Policy based management framework for Always Best Connected users”, ANWIRE 1st International Workshop on “WIRELESS, MOBILE & ALWAYS BEST CONNECTED”, University of Strathclyde, Glasgow, April 22, 2003

Paper Ib: The Wireless Media System: A Mobile Broadband System with Invisible I
B. Walke, J. Habetha, I. Herwono, R. Pabst, D. Schultz, “The Wireless Media System: A Mobile Broadband System with Invisible Infrastructure and low Radio Exposure of Humans”, ANWIRE 1st International Workshop on “WIRELESS, MOBILE & ALWAYS BEST CONNECTED”, University of Strathclyde, Glasgow, April 22, 2003

Paper Ic: Integración de Sistemas: Hacia una arquitectura de comunicaciones
Ivan Armuelles, Carlos Bader, Tomas Robles, “Integración de Sistemas: Hacia una arquitectura de comunicaciones móviles de 4G”, XIII Jornadas Telecom I+D, 18-20 November 03
Paper Id: Software Defined Protocols Based on Generic Protocol Functions for Wir
Lars Berlemann, Matthias Siebert, Bernhard Walke, 2nd Anwire Workshop on Reconfigurability 25-26 September 03 Mykonos

Paper Ie: Software Defined Protocols based on generic Protocol Functions for wir
Lars Berlemann, Matthias Siebert, Bernhard Walke, “Software Defined Protocols Based on Generic Protocol Functions for Wired and Wireless Networks”, 2003 Software Defined Radio Technical Conference and Product Exposition, Orlando, Florida, November 17-19, 2003

The present report D1.5.1 “Integrated System and Service Architecture” is the first in a series out of three deliverables reflecting the objectives of work programme of the ANWIRE System Integration task force TF1.5. The overall target of the task force is to generate proposals for an integrated system service architecture. For this, a detailed structured review of current system integration R&D efforts was created and is extensively presented in this deliverable.

Based on the review results a deep analysis was conducted to compare and classify the different system integration efforts and to relate them to ANWIRE aims. Based on these achievements, a basic architectural composition was developed representing a high level framework or architecture skeleton. The key idea of the presented skeleton is the statement of a policy based management architecture consisting of different domains. At the end of the deliverable, a first possible concrete realization of the proposed high level framework architecture is presented.

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.

Concerning IP transmission over wireless access systems, there are a number of proposals to maintain QoS. Basically, wireless IP systems are considered access systems to the core network, and for this reason IntServ techniques can be used, without ignoring the peculiarities of the wireless medium. To maintain the agreements of active connections, the time-varying status of the wireless channel should be taken into account, in order to control the multiple access in such a way that the requirements of each mobile user are fulfilled. Wherever the capabilities of the access system are insufficient in guarantying the agreed QoS, the use of Performance Enhancing Proxies (PEPs) can be considered. A PEP improves the performance of the Internet protocols on network paths where native performance suffers due to characteristics of a link or sub-network on the path. In principle, a PEP implementation may function at any protocol layer but typically it functions at one or two layers only. It can contain scheduling functions, advanced error control mechanisms, connection establishment signalling, compression and fragmentation techniques, etc.

Seamless mobility support is a key issue in Wireless Internet, especially concerning QoS provision during handover. For IP micro-mobility (mobility within the same access network) a considerable number of proposals exist in the literature. In order for these techniques to support QoS, they should be extended or combined with mechanisms that consider QoS. In general, coupling QoS techniques with micro-mobility mechanisms can minimise set-up delays and packet losses. It can also improve scalability and overhead, since less update messages are sent or they are better localised to only the affected areas. Coupling techniques are distinguished to closely and loosely coupled. According to the closely coupled approach, the same signalling mechanism is used to carry both the mobility and QoS information, leading to reduced signalling, compared to loosely coupled techniques. The disadvantage is that this limits the QoS implementation to be dependent on a specific micro-mobility mechanism, which might need certain extensions to support the required functionality. On the other hand, the loosely coupled approach uses mobility events to trigger generation of QoS messages. QoS messages can be triggered as soon as the new routing information has been installed in the network. This has the advantage of keeping mobility and QoS signalling independent to each other, but cannot attain the same delays as the closely coupled techniques.

The research area can be further divided into research tasks, such as:

• Optimisation on all levels
• End-to-end Quality-of-Service
• Integration of heterogeneous access technologies
• Mobility management (terminal, personal, session mobility)

The aim of this workpackage is to co-ordinate work that will focus on studying and integrating existing and future proposals in the area, in order to result in a full QoS and mobility support system that guarantees efficient and always on connectivity. Intermediate and final results will be fed into promotion and dissemination activities.

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)

Final Draft D1.1.1: User Requirements for Next Generation Networks
This deliverable is an attempt to define the requirements that users impose in the evolving world of heterogeneous wireless networks. These requirements are grouped together in three main and distinguishable categories: Connectivity, Service Provision and Adaptability/Reconfigurability. For each category the requirements are given in a structural manner from content/application providers to network and terminal or from application/transport layers to network/physical. These user requirements work in ANWIRE is intended to provide a user focus on system concepts by disseminating user requirements to the technical Work Packages.

final draft D1.1.2 V1.0: Report on the coordination of integrated
This deliverable focuses on the identification of generic requirements forReconfigurability, Adaptability and always-on connectivity features that will enhance the services offered by the wireless networks. To provide an essential impact on existing and future systems, all aspects including user (covered in D1.1.1 to a large extent), network operator and service provider needs for always-on connectivity as well as adaptability and reconfigurability are to be discussed.

5th draft D1.1.3 v1.0: Report on the co-ordination of integrated
The main scope of this deliverable is to identify novel system concepts, which can be potentially standarised across the core and access network and terminals. The introduction of a generic architecture enabling always on connectivity as well as the 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. Location and context awareness will be also investigated. The identification of methods for network and terminal capabilities negotiation, spectrum sharing, mode detection, policy provision and respective adaptability and reconfiguration actions triggering, seamless service provision by mode switching secure software download will be elaborated.