Overview
1. Dependability requirements
2. Delivering single packets
3. Delivering blocks of packets
4. Delivering streams of packets
1.Dependability requirements
1. Dependability aspects.
2. Dependability: Terminology.
3. Dependability constraints.
4. Dependable data transport – context
1.1 Dependability aspects
1. Coverage & deployment
• Is there a sufficient number of nodes such that an event can be detected at all? Such that data can accurately measured?
2. Information accuracy
• Which of the measured data have to be transported where such that a desired accuracy is achieved?
3. Dependable data transport
• Once it is clear which data should arrive where, how to make sure that it actually arrives?
1.2 Dependability: Terminology
• Main numerical metrics
1. (Steady state) availability – probability that a system is operational at any given point in time.
• Assumption: System can fail and will repair itself
2. Reliability at time t – Probability that system works correctly during the entire interval [0,t).
• Assumption: It worked correctly at system start t=0
3. Responsiveness – Probability of meeting a deadline
4. Packet success probability – Probability that a packet (correctly) reaches its destination
5. Bit error rate – Probability of an incorrect bit
المادة المعروضة اعلاه هي مدخل الى المحاضرة المرفوعة بواسطة استاذ(ة) المادة . وقد تبدو لك غير متكاملة . حيث يضع استاذ المادة في بعض الاحيان فقط الجزء الاول من المحاضرة من اجل الاطلاع على ما ستقوم بتحميله لاحقا . في نظام التعليم الالكتروني نوفر هذه الخدمة لكي نبقيك على اطلاع حول محتوى الملف الذي ستقوم بتحميله .
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