Traffic Recognition in Cellular Networks

Traffic recognition is a powerful tool that could provide valuable information about the network to the network operator. The association of additional information carried by control packets in the core cellular network would help identify the traffic that stem from each user and acquire statistics about the usage of the network resources and aid detecting problems that only one or a small group of users experience. The program used is called TAM and it operates only on Internet traffic. The enhancements of the program included the support for the Gn and Gi interfaces of the cellular network where the control traffic…


Chapter 1 Introduction
1.1 Background Information
1.2 Scope
1.3 Objectives
1.4 Insights on TAM
1.5 Related work
1.6 Overview
Chapter 2 The cellular network
2.1 The GPRS core network
2.1.1 Accessing the network – Gn interface
2.1.2 Gi interface
2.1.3 Network Elements
2.2 GPRS tunneling protocol – GTP

2.2.1 GTP operation
2.3 RADIUS Accounting protocol
Chapter 3 Traffic Analysis Module
3.1 Enhancing TAM
3.1.1 Common enhancements
3.2 Enhancements for the Gn interface
3.3 Enhancements for the Gi interface
3.4 A user filter
Chapter 4 A real world trace study
4.1 Problems Encountered
4.1.1 Trace file problems
4.1.2 IP fragmentation
4.1.3 Duplicate linked list entries
4.1.4 C language
4.1.5 TAM bugs
4.2 Studying the Gn interface
4.3 Studying the Gi interface
4.4 Program output
4.5 Verification – Comparison of programs
4.5.1 CFlow
4.5.2 MFlow
4.5.3 CFlow vs MFlow
4.5.4 Differences on the application
4.5.5 Concluding the verification
4.6 Results
4.6.1 Gn interface
4.6.2 Gi interface
Chapter 5 Performance issues
Chapter 6 Conclusion and Discussion
6.1 Conclusion
6.2 Discussion………….

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