Session Continuity Server for Lawful Interception Handover
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In heterogeneous communication networks, Lawful Interception (LI) network resources are not utilized optimally due to non-optimal selection of session continuity servers and content duplication elements, leading to content duplication across network elements, which results in redundant and incomplete LI media for Law Enforcement Agencies.
Innovation Solution
A method and system for continuous lawful interception of voice and data sessions across communication networks, involving a session continuity server controller that determines and initiates data packet duplication by identifying appropriate content duplication elements and network properties in source and destination networks, ensuring seamless handover and optimal resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If content duplication is performed at multiple network elements across heterogeneous networks, then Lawful Interception coverage is maintained during handover, but network resource utilization deteriorates due to redundant duplication
Solution Approach 1:
A session continuity server acts as an intermediary between the source and destination networks during handover. It coordinates the selection of content duplication elements and manages the transfer of duplication responsibilities, ensuring that only one element duplicates content at any given time while maintaining LI continuity across network boundaries.
Solution Approach 2:
The session continuity server pre-identifies and pre-configures appropriate content duplication elements in both source and destination networks before handover occurs. This preliminary preparation ensures seamless transition of duplication responsibilities without requiring multiple simultaneous duplication elements, thus avoiding redundant resource consumption.
2Stability of the object's composition
If content duplication elements are not optimally selected during handover, then session continuity is maintained, but data integrity deteriorates due to redundant and incomplete LI media
Solution Approach 1:
The session continuity server implements feedback mechanisms to monitor the status of content duplication elements and handover progress. Based on this feedback, it dynamically adjusts the selection of duplication elements to ensure optimal performance and complete LI media capture, preventing data loss or redundancy during network transitions.
Solution Approach 2:
The system changes key parameters such as the identity and location of content duplication elements based on network conditions and handover status. By dynamically adjusting these parameters, the system maintains both session continuity and data integrity, ensuring that the most appropriate element performs duplication at each stage of the handover process.
Data Source
AI summary
A lawful interception system to perform operations comprising determining an appropriate session continuity server, a content duplication element associated with a source communication network and one or more communication network properties associated with the source communication network; initiating, duplication of one or more first data packets associated with the ongoing voice and data session by the content duplication element; detecting a handover of the ongoing voice and data session from the source communication network to a destination communication network; determining the content duplication element associated with the destination communication network and one or more communication network properties associated with the destination communication network; and initiating, duplication of one or more second data packets associated with the ongoing voice and data session by the content duplication element.