Dynamic Frequency Resource Management in Low-Orbit Satellite Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Low-orbit satellite communication systems face increasing demand for frequency resources and rising radio wave interference, with existing frequency management methods struggling to efficiently utilize idle resources and respond to rapid changes in satellite deployments.
Innovation Solution
A method for intelligent dynamic frequency resource management, which generates a sensing table to indicate user presence or absence in adjacent interfering earth stations, creates a backup channel list using Two State Transition Probability, and checks for idle channels through spectrum sensing, allowing for flexible use of unused frequency resources and reducing interference by transmitting idle channels to adjacent space stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If government-centered command and control frequency management methods are used, then frequency allocation can be standardized, but the system cannot respond quickly to rapid changes in satellite deployments and new services
Solution Approach 1:
The patent implements self-service through autonomous spectrum sensing and idle channel inference capabilities built into satellite communication systems. Each system independently monitors the radio wave environment, identifies unused frequency resources, and manages its own frequency allocation without requiring constant government coordination, thereby achieving rapid adaptation while reducing administrative complexity
Solution Approach 2:
The patent employs feedback mechanisms where spectrum sensing results are continuously monitored and used to dynamically adjust frequency resource allocation. The system receives feedback about idle channels from the environment and automatically responds by allocating these resources, creating a closed-loop control system that adapts rapidly to changing conditions without complex external coordination
2Productivity
If spectrum sensing is performed continuously to identify idle channels, then frequency resource utilization improves, but energy consumption and system complexity increase
Solution Approach 1:
The patent applies dynamics by making the spectrum sensing operation adaptive rather than continuous. The system dynamically adjusts sensing activities based on traffic conditions, satellite positions, and identified idle channel patterns, performing sensing only when necessary to maintain efficient resource utilization while minimizing energy consumption
Solution Approach 2:
The patent implements preliminary action through proactive identification and recording of idle channels before they are needed. By anticipating future resource needs and pre-mapping available frequency resources, the system reduces the need for continuous sensing operations, thereby lowering energy consumption while maintaining high resource utilization efficiency
3Productivity
If more satellites are deployed to meet increasing demand, then service coverage and capacity improve, but radio wave interference between systems increases
Solution Approach 1:
The patent applies local quality by enabling each satellite system to independently identify and utilize idle frequency resources specific to its local radio wave environment. Through autonomous spectrum sensing, each system adapts to local interference conditions and selects frequency channels that are idle in its specific geographic and temporal context, thereby increasing overall capacity without proportionally increasing interference
Solution Approach 2:
The patent implements parameter changes by dynamically adjusting frequency allocation parameters based on real-time spectrum sensing results. The system changes operational parameters such as carrier frequency, bandwidth, and time slots according to detected idle channels, allowing multiple satellite systems to coexist with reduced interference while maintaining high communication capacity
Data Source
AI summary
A method for intelligent dynamic frequency resource management, the method includes the steps of: generating a sensing table indicating presence or absence of existing users by sensing a spectrum in an interfering earth station adjacent to a wanted receiving earth station in a situation of satellite communications between a wanted space station and the wanted receiving earth station, generating a backup channel list for idle channel inference by using the generated sensing table, checking whether the existing users exist in any one communication channel through spectrum sensing for the generated backup channel list, and inferring the communication channel as an idle channel and transmitting the communication channel to an interfering space station adjacent to the wanted space station in a case where there are no existing users, wherein in low-orbit satellite communication systems, frequency resources not in use temporally or regionally may be flexibly used.