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Radio Network Optimisation Process for umts 2nd phần 9

(Iub, Iur, Iu). Trước khi thu thập các quầy từ mạng và sử dụng chúng trong thực hiện các phép đo, một trong những đặc tính của mạng truy cập vô tuyến điện phải được ghi nhận và cũng được thể hiện trong các phép đo. Đây là vai trò của một RNC, có thể hoạt động như một RNC Phục vụ (SRNC), | UMTS Quality of Service 495 Each factor should be seen as a concept characterised by many measurements or parameters. Service support performance is the ability of an organisation to provide a service and assist in its utilisation. An example of service support performance is the ability to provide assistance in commissioning a basic service or a supplementary service such as the call-waiting service or directory enquiries service. Typical measures include mean service provisioning time billing error probability incorrect charging or accounting probability etc. Service operability performance is the ability of a service to be successfully and easily operated by a user. Typical measures are related to service-user mistake probability dialling mistake probability call abandonment probability etc. Service accessibility performance is the ability of a service to be obtained within given tolerances when requested by a user. Measures include items such as access probability mean service access delay network accessibility connection accessibility mean access delay etc. Service retainability performance is the ability of a service once obtained to continue to be provided under given conditions for a requested duration. Typically items like service retainability connection retainability premature release probability release failure probability etc. are monitored. Service integrity performance is the degree to which a service is provided without excessive impairments once obtained . Items like interruption of a service time between interruptions interruption duration mean time between interruptions mean interruption duration are followed. Service security performance is the protection provided against unauthorised monitoring misuse fraudulent use natural disaster etc. Network performance is composed of planning provisioning and administrative performance. Further trafficability performance transmission performance and network item dependability performance are part of .