RF Network Node Authentication Using Signal Timing Patterns
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Solution Overview
Problem
Unprotected and promiscuous radio frequency (RF) networks allow unauthorized access, leading to reduced efficiency, throughput, and accidental information sharing, particularly in systems like air combat maneuvering instrumentation (ACMI), where unauthenticated users can exploit the network and cause unintended consequences.
Innovation Solution
A method for managing RF networks that involves detecting new nodes, measuring signal data points, determining unique identifiers and timing patterns, and searching a database of node credentials to decide whether to allow access, using intelligent sensing heuristics to authenticate nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If promiscuous RF network operation is allowed, then network accessibility and ease of operation are improved, but network security and reliability deteriorate due to unauthorized access and accidental information sharing
Solution Approach 1:
The system performs preliminary actions by measuring signal characteristics and determining unique identifiers before allowing node access. The network infrastructure authenticates nodes by comparing their identifiers against a database of authorized nodes, preventing unauthorized access before it can occur. This preliminary authentication mechanism resolves the contradiction by maintaining ease of operation for authorized nodes while blocking unauthorized access that would compromise security.
Solution Approach 2:
The patent introduces an intermediary authentication mechanism between nodes and the network. The network infrastructure acts as a mediator that measures signal data points, determines unique identifiers, and compares them against stored credentials. This intermediary layer enables the network to maintain accessibility for legitimate nodes while filtering out unauthorized access, thus resolving the security-accessibility contradiction.
2Adaptability or versatility
If unauthenticated users are allowed to join the network, then network versatility and adaptability are improved, but network efficiency and throughput deteriorate due to resource consumption by unauthorized nodes
Solution Approach 1:
The system performs preliminary authentication by measuring signal characteristics and determining unique identifiers before allowing nodes to access the network. This preliminary action ensures that only authenticated nodes can join, maintaining network efficiency and throughput while preserving versatility for authorized users. The authentication process prevents unauthorized nodes from consuming network resources.
Solution Approach 2:
The network infrastructure provides feedback by continuously monitoring signal characteristics and comparing node identifiers against the database. This feedback mechanism allows the system to dynamically control access, allowing authenticated nodes to maintain full access while blocking unauthorized nodes, thus preserving both versatility and efficiency.
3Ease of operation
If nodes without authentication are permitted, then ease of node entry is improved, but network reliability deteriorates due to accidental jamming and information leakage
Solution Approach 1:
The system performs preliminary authentication actions by measuring signal data points and determining unique identifiers before allowing node entry. This preliminary action maintains ease of operation for authenticated nodes while preventing unauthorized nodes from causing accidental jamming or information leakage, thus resolving the reliability issue.
Solution Approach 2:
The network infrastructure serves as an intermediary that measures signal characteristics, determines identifiers, and compares them against stored credentials. This intermediary mechanism simplifies node entry for authorized nodes while blocking unauthorized access that would compromise information security and network reliability.
Data Source
AI summary
A radio frequency (RF) network includes a plurality of nodes communicating using RF signals. A base station serves as network infrastructure to manage the nodes. The base station is connected to a database storing information on accepted nodes within the RF network. A new node is detected. A unique identifier and a timing pattern are sensed and determined for the new node. These parameters are searched within the database along with provided identification and credentials for the new node. Depending on the results of the search within the database, the new node is allowed or rejected from joining the RF network.