Tracing Method with Intra and Inter Protocols Correlation. Tracing Systems for User&Control-Plan Traffic of Packet Core of GPRS-UMTS Networks

The resources of actual tracing tools for Control-Plane and User-Plan traffic are limited and most of them are crashing under the task of tracing 100% User-Plan traffic. We propose a new tracing system for UP&CP traffic of Packet Core networks, like GPRS-UMTS networks, in order to verify their functionality. In our implementation, the total CP traffic and only the selected UP traffic remains under tracing analysis. All other messages from UP that do not match our filtering system will be discarded starting from the beginning, without adding new resources to the analyzer, and the tracing can work without problem. In the case of PS network the filtering can be done on: IMSI, MSISDN, RAC, LAC, etc. This method can be applied also for VOIP starting from CP (SIP signaling) to filter only the UP (VOIP) associated. With this new concept, network quality, customer satisfaction, tracing system stability, investment/cost in normal limit and the flexibility of a new tracing system can be reached.
Selected Publications:
Mangri M., Nafornita M., Tracing Methods with Intra- and Inter-Protocol Correlation, The 1-th Int.Conf. on Eng. of Modern Electric Systems, EMES'09, Univ. of Oradea, Romania