Ground Terminal Handover Control for Satellite Signal Continuity
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Solution Overview
Problem
Existing satellite communication systems face challenges in managing seamless handovers of satellite connections between ground terminals, which can lead to disruptions and suboptimal signal quality.
Innovation Solution
A system and method that utilize a network of ground terminals with phased array antennas, where each node monitors signal quality and a master node assigns the best node to maintain communication with the satellite constellation, facilitating smooth handovers based on changing signal quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional handover methods are used in satellite communication, then system complexity is reduced, but signal quality and connection reliability deteriorate due to disruptions during handover
Solution Approach 1:
A master node is introduced as an intermediary that coordinates handover decisions. The master node collects signal quality measurements from all nodes, determines the optimal node for satellite communication, and manages the handover process. This centralized coordination improves reliability by ensuring seamless handovers while keeping individual node complexity low.
Solution Approach 2:
The system implements continuous feedback loops where each node monitors signal quality and reports to the master node. The master node uses this feedback to make informed handover decisions, switching communication to the node with the best signal quality. This feedback mechanism ensures high connection reliability by dynamically adapting to changing signal conditions.
2Reliability
If each node independently manages satellite connection, then system complexity is minimized, but overall signal quality deteriorates due to inability to optimize handover across the network
Solution Approach 1:
The master node serves as a mediator that aggregates signal quality information from all nodes and makes centralized handover decisions. This allows the system to optimize signal quality across the entire network by selecting the best node for communication, rather than relying on independent decentralized decisions that may not achieve global optimality.
Solution Approach 2:
The system merges the handover management function into a single master node, combining the computational and decision-making resources of all nodes under centralized control. This consolidation enables optimal signal quality selection while distributing the actual signal monitoring tasks across all nodes, balancing complexity and performance.
3Adaptability or versatility
If manual node assignment is used, then automation level is reduced, but adaptability to changing signal conditions deteriorates
Solution Approach 1:
The system implements automated self-service handover management where the master node automatically monitors signal quality, evaluates all nodes, and performs handover decisions without manual intervention. This automation enables the system to rapidly adapt to changing signal conditions, ensuring continuous optimal communication with the satellite constellation.
Solution Approach 2:
Automated feedback loops continuously monitor signal quality metrics and trigger handover decisions when conditions warrant. The master node receives real-time signal quality data from all nodes and automatically switches communication to the node with superior signal characteristics, providing high adaptability to dynamic satellite communication environments.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach maximizes signal quality by ensuring that the ground terminal with the best signal quality maintains the connection and enables seamless handovers, minimizing disruptions and optimizing communication performance.
Implementation Method 1
The nodes may further be arranged to steer the beam of the phased array antenna such that the main lobe points in the direction of the at least one satellite
Data Source
AI summary
A system for satellite communication including a plurality of nodes, each node including a ground terminal for communication with a satellite constellation, each ground terminal including a phased array antenna, each node being arranged to monitor a signal quality of a signal received by the ground terminal from the satellite constellation, the system being arranged to assign at most one node in the system to serve as a master node, the master node being arranged to obtain, for each node, the signal quality of the signal received by the ground terminal from the satellite constellation, assign, based on the signal quality, a node within the system to maintain communication with the satellite constellation, and hand over communication with the satellite constellation from a first node to a second node based on changes in the signal quality over time.