Failure Risk Analysis on Core Network of GPRS Equipment Using FMEA & FTA Method and Scenario of Treatment Cost Allocation

Due to the increasing of mobile communication development, GSM operators are motivated to provide more efficient data services with a high speed feature and also introduce new services. In order to do this, GPRS could be applied as a solution to address the challenge. However, as the GPRS becomes a key for GSM operators to compete in the market especially in internet service are, focus on GPRS potential risk failure should get more attention. Thus, the purpose of this research is to conduct a risk analysis on GPRS maintenance activity that lead to designing risk treatment action and scenario of treatment cost allocation. In this research, FMEA method is employed to obtain the critical risks which will be further analysed using FTA to identify the basic event of those critical risk. Moreover, OptQuestCrystal Ball simulation is employed to find the optimal treatment cost allocation. As a result of this research, three main points could be concluded. First, 8 critical risks are successfully drawn from 28 identified risks. Furthermore, based on the research, it is suggested that every critical risk should have different treatment actions. Lastly, according to the result of cost allocation using OptQuest simulation, the higher the cost allocation that is given to treat critical risks, the higher the maximum total advantage.