Goal of the SASER project is the conceptual design of an architecture for secure future transport networks and the for this purpose required technologies. In particular, the target is to correct or evade security vulnerabilities of today’s IP-layer networks by downscaling data transmission as far as possible to lower network layers (physical layer and data layer); in this way the use of IP routers, which have to be considered as critical to security, can be reduced and data transmission can be accomplished cost and energy efficiently. This can be realized, for instance, by extending the functionality of optical networks with respect to flexibility, availability, redundancy and reliability.

Working on the subproject SASER SIEGFRIED, Zuse Institute Berlin is concerned with the mathematical modelling for the planning and operation of communication networks and with new algorithms for the solution of these complex models. A particular focus will lie on investigating the impact of the flexibility of future optical hardware generations (flexible bit rate, bandwidth, transparent reach, etc.) on total costs, energy consumption and adaptivity of the network architecture to the dynamics of varying data traffic. To this end the potential for network optimization, theoretical limitations and possible trade-offs will be analyzed with respect to characteristic design parameters (such as channel capacity, bandwidth granularity, spectral efficiency of optical signal types, etc.), network architecture, topologies, and energy consumption. Furthermore, global network planning rules and methods will be derived in the course of this research.