Method and arrangements for QoS-aware routing in a LI system

An arrangement for Quality of Service (QoS)-aware routing of received session flows of separate communication sessions comprising Communication Content received from Lawful Interception of target sessions, the arrangement comprising:

• a sorting circuitry configured to sort each said separate communication session into one of two routing groups, a first routing group and a second routing group, according to certain criteria wherein QoS is at least one of the criteria, and the sorting circuitry is configured to:
• classify each said separate communication session into one of two traffic classes, a first traffic class and a second traffic class;
• mark each communication session of the first and second traffic class with a quality marking indicating high quality or low quality in accordance with an outcome of a QoS threshold test;
• and
• sort the communication sessions marked as low quality of the second traffic class into the second routing group, and sort all other communication sessions into the first routing group regardless of the quality marking and the traffic class;
• a routing circuitry configured to:
• route communication sessions sorted into the first routing group via a regular handover interface to a Law Enforcement Agency;
• and
• route communication sessions sorted into the second routing group via a second handover interface to the Law Enforcement Agency.

An arrangement for Quality of Service (QoS)-aware routing of received session flows of separate communication sessions comprising Communication Content received from Lawful Interception of target sessions, the arrangement comprising a processor and a memory, said memory containing instructions executable by said processor whereby said arrangement is operative to:

• sort each said separate communication session into one of two routing groups, a first routing group and a second routing group, according to certain criteria wherein QoS is at least one of the criteria, and sorting each said separate communication session includes:
• classifying each said separate communication session into one of two traffic classes, a first traffic class and a second traffic class;
• marking each communication session of the first and second traffic class with a Quality marking indicating high quality or low quality in accordance with an outcome of a QoS threshold test;
• and
• sorting the communication sessions marked as low quality of the second traffic class into the second routing group, and sorting all other communication sessions into the first routing group regardless of the quality marking and the traffic class;
• route communication sessions sorted into the first routing group via a regular handover interface to a Law Enforcement Agency;
• and
• route communication sessions sorted into the second routing group via a second handover interface to the Law Enforcement Agency.