Self-Organizing Mesh Network for GPS-Limited Drone Synchronization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Drones in a swarm often lack precise synchronization and location coordination, especially in GPS-limited environments, which hinders their ability to maintain formation and avoid collisions.
Innovation Solution
A self-organizing mesh network system with a grandmaster node and wireless synchronization protocol using precision time stamping and location propagation, enabling drones to synchronize and maintain location awareness through a scoring metric and timeslot-based communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If drones use GPS for location coordination, then location accuracy is improved, but the system becomes vulnerable to GPS interference and less resilient in GPS-limited environments
Solution Approach 1:
The patent introduces an intermediary synchronization network comprising master nodes and slave nodes that mediate between drones and GPS. This network propagates time synchronization signals through wireless communication, enabling location coordination without direct GPS dependency. The intermediary network provides resilient operation in GPS-limited environments while maintaining location accuracy through relative positioning.
2Manufacturing precision
If drones implement precise time synchronization, then formation maintenance capability is improved, but the complexity of the synchronization system increases
Solution Approach 1:
The synchronization system is segmented into hierarchical roles: master nodes that generate timing references and slave nodes that synchronize to masters. Each drone assigns itself a role based on signal strength metrics, dividing the complex synchronization task into manageable functions. This segmentation reduces individual node complexity while achieving precise formation maintenance across the swarm.
Solution Approach 2:
The system implements self-service through autonomous role assignment and self-organizing behavior. Each drone automatically evaluates signal strengths from potential masters and assigns itself a role without external intervention. The self-service mechanism simplifies system complexity by eliminating centralized control while maintaining precise synchronization through distributed decision-making.
3Reliability
If drones operate without GPS in GPS-limited environments, then system resilience is improved, but location coordination capability deteriorates
Solution Approach 1:
The patent replaces the mechanical/GPS-based location coordination system with a wireless communication-based time synchronization system. Instead of relying on satellite signals, the system uses electromagnetic wave propagation through the intermediary network to establish time references. This substitution enables resilient operation in GPS-denied areas while maintaining location coordination through relative positioning and time-of-flight measurements.
Data Source
AI summary
A self-organizing mesh network system is disclosed, comprising: at least one master node generating a timing reference signal; a plurality of regular nodes deriving time synchronization from the timing reference signal; and a wireless medium for communicating location and timestamp information among the plurality of regular nodes, The plurality of regular nodes may be configured to each use communicated location and timestamp information of nearby nodes to independently generate a location map of the nearby nodes. The plurality of regular nodes may be configured to accept an additional regular node. The plurality of regular nodes may be configured to allow a node of the plurality of regular nodes to exit the plurality of regular nodes. The plurality of regular nodes may each use communicated location and timestamp information of the plurality of regular nodes to independently generate a location map of each of the plurality of regular nodes.