TABLE OF CONTENTS In this chapter, we focused on the design of the service model. We first surveyed the service models in the literature. Various service models have their advantages and disadvantages. For the purpose of supporting large-scale assurance operations, we defined a scalable and modular design following the work of [6], but also incorporated many of the performance analysis tools available from various earlier work. We also gave a summary of statistical analysis and mathematical tools suitable for supporting the service model implementation. These tools take advantage of many existing statistical algorithms and can be used to extract useful knowledge for assurance operations, in particular for root-cause analysis.
The service model and its associated tools will be the basis for the discussion of the following chapters, in which VoWiFi and 3G integration operation is described.
