Node Pairing for Secure Message Aggregation
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Solution Overview
Problem
In communication networks, especially during roaming, existing message passing techniques lack robustness in forming reliable pairs of nodes for secure aggregation, leading to potential information loss and privacy breaches due to unreliable node pairs and interference.
Innovation Solution
A method where the first node determines pairs of nodes based on communication reliability, assigning masks of opposite signs to ensure secure aggregation and prevent information exposure, thereby enhancing data robustness and privacy preservation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing message passing techniques are used for node aggregation, then the implementation is simple and computational cost is low, but the reliability of node pairs is insufficient leading to information loss and privacy breaches
Solution Approach 1:
The patent applies preliminary action by establishing reliability criteria and performing preliminary pairing of nodes before the actual message aggregation process. The first node determines which nodes to pair based on predefined reliability measures, ensuring that only reliable node pairs are formed. This preliminary setup prevents information loss and privacy breaches during aggregation, while the pairing mechanism itself remains relatively simple to implement.
2Loss of information
If nodes are paired for secure aggregation without reliability assessment, then the aggregation process is fast, but information loss occurs due to unreliable node pairs
Solution Approach 1:
The patent uses cheap short-living objects by implementing lightweight reliability measures that require minimal computational resources and time. The reliability assessment uses simple criteria such as checking if nodes are in the same roaming partner network, which is a quick determination without complex calculations. This allows rapid pairing of reliable nodes while preventing information loss, making the reliability check computationally inexpensive and time-efficient.
3Loss of information
If masking is applied to all nodes for privacy preservation, then privacy is protected, but data analysis accuracy decreases due to excessive obfuscation
Solution Approach 1:
The patent applies local quality by selectively applying masking only to the aggregated information from paired nodes, rather than masking all node data uniformly. The first node receives information from paired second and third nodes, aggregates it with appropriate masking to prevent exposure, and then forwards the masked aggregation to the fourth node. This localized masking approach preserves privacy where needed while maintaining data analysis accuracy by not unnecessarily obfuscating all data.
Data Source
AI summary
A method performed by a first node for handling aggregation of messages is disclosed. The first node determines out of a plurality of nodes, which nodes are to be paired as a pair of nodes. The pairing is to pass messages to another node for aggregation of information comprised in the messages. The information is to be masked by respective masks of opposite signs. The respective masks are to prevent the another node from accessing the information while enabling their aggregation. The determining is based on a respective measure of reliability of communications of a second node and a third node in the pair of nodes being similar, according to a criterion. The first node initiates an aggregation of the messages passed from the determined pair of nodes to the another node.