Patent ID: 9204293
Filing Date: 2015-12-01
Classification: H04L,H04M,H04W

Abstract:
1. A method performed in a network node for providing a Law Enforcement Agency LEA with retention or interception data related to a target user over a telecommunications network, the method comprising steps of: the network node inspecting traffic packets transmitted over the telecommunications network involving the target user; the network node generating a plurality of usage data records based on the inspected traffic packets, each record comprising information relating to a certain service class and to a respective communications stack layer; for each communications session involving a plurality of different communications stack layers, the network node providing said plurality of usage data records with a same correlation identity number for correlating the data at said different communications stack layers; the network node sending, over the telecommunications network to the LEA, a usage data record for each communication stack layer included in the plurality of different communications stack layers, each usage data record comprising the correlation identity number, wherein the correlation identity number is a unique Communications Identity Number (CIN) identifying the lowest communications stack layer of said plurality of different communications stack layers, wherein each usage data record comprises a session CIN identifying a respective session in a respective communications stack layer, and wherein the usage data records sent from the network node to the LEA include: