Classical Performance models Poisson traffic model Many simplified assumptions on System/protocol operation Inaccurate results
Classical Performance Models Poisson Traffic Model Many simplified assumptions on System/protocol operation Inaccurate results
We want Realistic Traffic Model No simplified assumptions on System/protocol operation accurate results
We want Realistic Traffic Model No simplified assumptions on System/protocol operation Accurate results
Example 1: Ethernet The ethernet mac protocol (1) Carrier Sensed Multiple Access with Collision Detection(CSMA/CD) (2 The Binary Exponential Backoff (BEB) Algorithm
Example 1: Ethernet The Ethernet MAC protocol: (1) Carrier Sensed Multiple Access with Collision Detection (CSMA/CD) (2) The Binary Exponential Backoff (BEB) Algorithm
Ethernet C E G time C D E FG The big bang ofe. f g D time E F G
Ethernet D time F G The Big Bang of E, F & G E C D E F G C D E F G time
Detailed Analysis LAN traffic Served CSMA/CD packets BEB collided packets Ethernet or IEEE 802.3
Detailed Analysis CSMA/CD BEB collided packets LAN traffic Served packets Ethernet -or - IEEE 802.3