Wireless Ad Hoc and Sensor Networks

Congestion Control in ATM Networks and the Internet 95approach, whereas in the case of a one-layer NN basis, functions in thehidden layer are employed (Jagannathan and Talluri 2002) to approximatethe traffic. For details of these methods, please refer to (Jagannathanand Talluri 2000, 2002).3.3.3.5 Traffic SourcesThis section describes different traffic sources and the NN model used inthe simulations. Both ON/OFF and MPEG data were used. Intially, toevaluate the performance of the controller, ON/OFF and MPEG sourcesare used separately. In the case of fairness, both ON/OFF and MPEG areused together.3.3.3.5.1 Multiple ON/OFF SourcesTo evaluate the performance of the controllers, multiple ON/OFF sourceswere used initially. Figure 3.5 shows the multiplexed ON/OFF trafficcreated through 40 ON/OFF sources. The PCR for each source is 1200cells/sec, the MCR is 1105 cells/sec, and the PCR of the combined sourceis 48,000 cells/sec and the MCR is 44,200 cells/sec. A sampling intervalof 1 msec was used in the simulations.50ABR multi source Traffic45403530Cells/ms25201510500 200 400 600 800 1000 1200 1400 1600 1800Time in msecFIGURE 3.5Traffic from ON/OFF sources.