Table of Contents
Simulation of General Packet Radio Service Network
Road map
What is GSM?
GSM network
Data over GSM
Solution: GPRS
GPRS network
GPRS introduces two new nodes
Project goals
Why modeling and simulation?
OPNET tools
New OPNET node model
New packet format
New process model
Attach procedure
Attach procedure: accepted
Attach procedure: rejected
Activation procedure
Activation procedure: accepted
Activation procedure: rejected
GPRS model project view
Network configuration
Network configuration (cont.)
Simulation Scenario 1
Rejection in Attach
Rejection in Activation
Two classes of QoS: packet end-to-end delays
Two classes of QoS: Mobile Stations using the fast link
Two classes of QoS: Mobile Stations using the slow link
Simulation Scenario 2
Number of Attach messages
Signaling procedures processing time
Improvements
Conclusions
Conclusions (cont.)
References
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Author: Ricky Ng and Ljiljana Trajkovic
Email: ljilja@sc.sfu.ca
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