Scalable Networks of the Future

Competence CenterNetwork & Mobility
ContactProf. Dr. Sahin AlbayrakDr. Fikret Sivrikaya
Sponsored by: Nokia Siemens Networks
Partners: Siemens AGUniversität BremenUniversität Tübingen


The networks of future generation are recognized by their growing heterogeneity and complexity. In addition to various access network technologies (WLAN, UMTS, WiMAX), the networks will have to support end devices of different capacities and service requirements in the future. ScaleNet, as a network of the next generation, will provide a system concept that makes it possible the scalable, efficient, flexible and inexpensive integration of wired and wireless access networks and access technologies. The system will be designed in all parts to deliver high performance and all the conceivable variants of user and terminal mobility will be supported. 

ScaleNet, which is aided by the German Federal Ministry for Education and Research (Bundesministerium für Bildung und Forschung), is a cooperative effort between leading industry partners in the Telecommunication sector like Alcatel, Deutsche Telekom, Ericsson, Lucent Technologies, Qualcomm, Siemens and academic institutions like Fraunhofer Institute for Communications Technologies. DAI-Labor of Technical University of Berlin is involved in ScaleNet Project as subcontractor of Siemens.  


DAI-Labor contributes to ScaleNet by exploring resource management mechanisms for next generation heterogeneous networks, on behalf of Siemens AG. The goal of the project is to be able to take accurate handover decisions by efficiently exchanging information about the actual network condition. By applying overlay-mechanisms, the participating network elements (Mobile Nodes, Access Points, Access Routers, Application Severs etc.) of the overlay exchange Policy Information with each other, in order to establish a cost-effective exposure to the available communication bandwidth for the users with reduced effort, and in order to adapt the services to the respective network quality and status. 

Overlay Mechanisms have already been applied successfully in early projects such as MBone, 6BOneand for file-sharing in the Internet. The idea of using of an overlay to exchange information between nodes of next generation networks will be a primary focus of this project.


To realize the goals ScaleNet covers the following topics:

  • Policy-Based Mobility Management: to develop a mechanism that presents a semantic description of the networking environment, interprets this semantic description, and executes the handover and content adaptation decisions based on the interpretation.
  • Overlay Mechanisms for the provisioning of an efficient communications platform where policy information is exchanged for the purpose of handover decision making and the adaptation of content.

The developed mechanisms are evaluated through simulations and prototype implementations, and integrated in a joint test bed for demonstration purposes in collaboration with Siemens AG