| Since the 19 th National Congress of the CCP put forward high-quality development,China’s economy has shifted from a stage of rapid growth to high-quality development,with more emphasis on the inherent level and connotation of development,and on the vitality,innovation and competitiveness.The society also responded positively,changed their development ideas,and formulated high-quality development goals and performance appraisal indicators.It is increasingly difficult for small companies to survive and develop in the highly open and increasingly fierce market competition,and cost reduction-efficiency enhancement have become the main way of high-quality development.The author takes the communication network system(TV and radio network,security communication network,visual access control network)designed,constructed and operated by A communication network company as the research object,uses mathematical statistics and cluster analysis methods to analyze the relevant parameter characteristics of network system fault events,and combines the fault tree method to build system-unit fault modes and calculate their failure rates.At the same time,topology principles are used to build the topology of each communication network,analyze the influence of each unit or subsystem on the system availability in combination with its failure mode and failure rate,and formulate the design and operation maintenance preference of the network system based on the characteristics of network functional attributes,cost constraints,user experience,etc.,so as to finally form a more scientific and efficient design and maintenance scheme.It is found that the only power supply system(including insurance module)in the above communication system that is externally connected to each system has the highest failure rate and impact degree in the horizontal comparison of each equipment,indicating that other subsystems of the communication network are relatively reliable and stable;Under the same cost constraint,increasing system redundancy has more significant impact on the system than improving subsystem reliability. |