MANET Node Frequency Adaptation in Contested Environments
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In electromagnetic contested environments, current ad-hoc networking waveforms face significant performance degradation due to routing overheads and lack of resilience, with no effective method to determine node jamming or adapt to changing EM conditions, leading to network fragmentation and connectivity issues.
Innovation Solution
A method for determining if a node is in an electromagnetic contested environment, scanning for unused frequencies, and transmitting information to other nodes to switch communication frequencies, utilizing unidirectional links to maintain network connectivity and reduce jammer effectiveness, with the aid of atomic clocks for time synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ad-hoc networking waveforms are used to improve network resiliency, then routing overhead increases exponentially and network fragmentation occurs
Solution Approach 1:
The patent segments the frequency spectrum into multiple channels and divides network traffic into different priority classes. By segmenting communication into control plane (high priority) and data plane (normal priority) traffic, the system reduces routing overhead while maintaining network resiliency through frequency diversity and prioritized message handling.
Solution Approach 2:
The patent dynamically changes frequency parameters by scanning and identifying unused frequencies when jamming is detected. The system adjusts communication frequencies in real-time based on electromagnetic environment conditions, transforming static frequency operation into dynamic frequency adaptation to avoid jammer impact.
2Ease of operation
If nodes operate on fixed frequencies to simplify communication, then jammer effectiveness increases and connectivity is lost
Solution Approach 1:
The patent implements dynamic frequency selection where nodes continuously scan for unused frequencies and adapt their communication frequencies based on detected electromagnetic conditions. This transforms static frequency operation into a dynamic system that automatically responds to jammer activity, maintaining ease of operation through automated frequency management while reducing jammer effectiveness.
Solution Approach 2:
The patent performs preliminary frequency scanning and identification of unused frequencies before jamming occurs or when detected early. Nodes proactively establish alternative frequency paths in advance, so when jamming is detected, communication can immediately switch to pre-identified clean frequencies without interruption.
3Object-affected harmful factors
If current anti-jam waveforms are used to reduce jammer impact, then nodes cannot determine their EM environment status
Solution Approach 1:
The patent implements feedback mechanisms where nodes continuously monitor their electromagnetic environment, detect jamming conditions, and report their status to the network. This feedback loop provides real-time information about EM environment conditions, enabling nodes to make informed decisions about frequency selection and communication strategies while maintaining awareness of network-wide jamming patterns.
Solution Approach 2:
The patent introduces an intermediary frequency scanning and detection mechanism that acts as a mediator between the physical EM environment and the network communication layer. This intermediary layer scans frequencies, identifies unused channels, and translates electromagnetic conditions into network actionable information, enabling nodes to determine their EM environment status without direct exposure to jamming complexity.
4Reliability
If nodes switch frequencies to avoid jamming, then communication reliability improves but network coordination complexity increases
Solution Approach 1:
The patent creates universal frequency hopping patterns and standardized message formats that work across all nodes in the network. By establishing universal protocols for frequency selection, message prioritization, and coordination, the system enables any node to participate in frequency switching without complex node-specific coordination, reducing overall network coordination complexity while maintaining communication reliability.
Data Source
AI summary
A method includes determining that a first receiver of a node of a mobile ad-hoc network (MANET) is in an electromagnetic contested environment for a first frequency. The method also includes scanning a frequency coverage range of a second receiver of the node for unused frequencies. The method additionally includes selecting a frequency from the unused frequencies, the selected frequency to be used for communication of messages from another node of the MANET to the node via the second receiver. The method further includes transmitting, to the other node, a message including information of the selected frequency via the transmitter.