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This paper presents a Network Attachment SubSystem (NASS) based Authentication, Authorisation and Accounting (AAA) testbed to provide network access control in mesh networks. The testbed aims to investigate carrier-grade AAA aspects in mesh networks regarding Next Generation Networks (NGNs) and next generation service provisioning. Three AAA concepts, central, hierarchical and distributed for mesh networks are presented. Derived from these AAA concepts a NASS conform hierarchical AAA architecture and testbed is described. Furthermore, extensions of NASS functionalities and the development of a Service Enhancement Function (SEF) are presented to enable pre-session service quality improvements. This service quality improvement is based on selection of user equipment interface with best link capabilities.
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