Investigating a communication aspect of a data flow

摘要

The invention relates to a method, device (24) in a network node of a communication network (N), a computer program and a computer program product for investigating the correctness of a communication aspect of a data flow (DF1) passing through the network, where the data flow is provided in relation to a user terminal (10) connected to the network. The device (24) obtains at least one network generated event data record (EDR1; EDR3) of a first type and a network generated event data record (EDR2; EDR4) of a second type, compares the event data records of the first type with the event data record of the second type, determines the correctness of the communication aspect based on the comparison and sends alarm messages (AMI, AM2) in relation to the communication aspect if the two types of event data records indicate differences in the communication aspect.

主权项

1. A method for investigating the correctness of a communication aspect of a data flow passing through a communication network, said data flow being provided in relation to a first user terminal that is connected to said communication network, the method being performed in a network node of the communication network and comprising the steps of:
obtaining at least one network generated event data record of a first type related to a completion of transfer of the data flow through the communication network; obtaining a network generated event data record of a second type in the form of a network access log data record type that is related to the routing of the data flow through the communication network; comparing, using a processor, the event data records of said first type related to a completion of transfer of the data flow through the communication network with the event data record of the second type in the form of a network access log data record type, wherein the comparing involves investigating the existence of a further event data record of the first type that confirms the reception of the data flow; determining, with the processor, the correctness of the communication aspect based on the comparison; and sending at least one alarm message in relation to the communication aspect in response to determining that data in the two types of event data records indicate differences in the communication aspect.