Session Continuity Server for Lawful Interception Resource Optimization
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Solution Overview
Problem
In heterogeneous communication networks, network resources are not utilized optimally during Lawful Interception (LI) due to non-optimal selection of session continuity servers and content duplication elements, leading to redundant content duplication across network elements, which results in inefficient LI media content delivery.
Innovation Solution
A method and system for determining and utilizing an optimal session continuity server and content duplication element across communication networks based on routing policies, processing capacity, congestion thresholds, and distance, ensuring continuous and sequential lawful interception of voice and data sessions by initiating and maintaining data packet duplication across source and destination networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If content duplication is performed at multiple network elements for lawful interception, then interception coverage is improved, but network resource utilization deteriorates due to redundant duplication
Solution Approach 1:
The patent extracts the content duplication function from multiple network elements and consolidates it to a single optimal network element. The session continuity server identifies and selects one specific network element to perform content duplication, preventing redundant duplication at multiple elements while maintaining complete interception coverage through centralized content distribution.
Solution Approach 2:
The patent merges multiple content duplication operations into a single coordinated operation. By selecting one optimal content duplication element and having it serve multiple sessions, the system combines what would otherwise be separate duplication functions, eliminating redundancy while maintaining comprehensive lawful interception coverage.
2Device complexity
If session continuity server selection is non-optimal, then system complexity is reduced, but lawful interception continuity deteriorates across heterogeneous networks
Solution Approach 1:
The session continuity server performs preliminary actions by pre-identifying and selecting the optimal content duplication element before handover occurs. This advance selection ensures that the correct network element is ready to perform content duplication, maintaining lawful interception continuity across heterogeneous networks without adding complex real-time decision-making mechanisms.
3Ease of operation
If content duplication elements are not optimally selected, then ease of operation is improved, but redundant content duplication occurs across networks
Solution Approach 1:
The session continuity server implements feedback mechanisms to monitor and identify the optimal content duplication element based on network conditions, session characteristics, and performance metrics. This feedback-driven selection process automatically prevents redundant content duplication by ensuring that only the most appropriate network element performs duplication for each session, maintaining operational simplicity while eliminating waste.
Data Source
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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.