Survivable mobile telecommunication systems
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Abstract
Survivable systems are systems that have the ability to maintain their critical services and to make them available in a timely manner even in cases of accidents, failures or attacks. The main objectives of a survivable system are robustness, fault tolerance,
security and recovery of its critical services. An open issue in the field of survivable systems is the determination of standard processes which ensure that a service is indeed survivable. During the current research, general approaches on providing and
evaluating system’s survivability are firstly examined. Secondly, the applicability of these approaches on telecommunication systems is investigated, with final target the provision of a framework in form of Software Development Lifecycle (SDLC), for design and implementation of a survivable mobile telecommunication system. The research has been based on investigation of survivability approaches already defined by 3GPP organization’s standardization, which should be followed by any organization, which constructs nodes of a mobile telecommunication system. After presenting the already defined survivability controls, the current thesis extends 3GPP standardization survivability mechanisms to provide a SDLC for a survivable mobile telecommunication system. Then, application of framework proposed has been applied to 4G Voice Bearer Connection establishment as a case study. Finally, quantitative and qualitative results of the proposed process capability are presented, and conclusions are extracted.