Virtual Gateway Redundancy in Satellite Spot Beam Networks
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Solution Overview
Problem
Satellite communication systems face inefficiencies in resource utilization due to the need for redundant gateways to ensure committed capacity and uptime, leading to costly idle resources and infrastructure challenges, especially in low subscriber density areas.
Innovation Solution
A method and system that utilize multiple interconnected gateways with spot beams, allowing for adaptive frequency and polarization adjustments, as well as increased transmission power and adaptive coding and modulation, to expand coverage areas and maintain service during gateway failures without physical resource duplication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If redundant gateways are deployed to guarantee committed capacity and service up-time, then system reliability is improved, but resource utilization deteriorates due to idle gateways and inefficient infrastructure usage
Solution Approach 1:
A single gateway is configured to perform multiple functions by dynamically switching between serving different spot beams. The gateway can be reassigned to different coverage areas based on real-time service needs, allowing one gateway to replace multiple potential redundant gateways while maintaining service continuity during failures
Solution Approach 2:
The system implements dynamic gateway-to-spot beam assignment where gateways can be rapidly reassigned to different spot beams upon failure detection. This dynamic reconfiguration allows the system to adapt to failures in real-time without requiring static redundant gateways, optimizing resource utilization while maintaining reliability
2Reliability
If physical redundant gateways are deployed to cover failure scenarios, then system reliability is improved, but device complexity and infrastructure cost increase
Solution Approach 1:
Gateways are designed with multi-functionality to serve multiple spot beams across different coverage areas. This universal design eliminates the need for dedicated redundant gateway infrastructure for each spot beam, reducing overall system complexity while maintaining failure coverage capabilities
Solution Approach 2:
The system merges the functions of multiple potential redundant gateways into a single gateway that can dynamically serve different spot beams. This consolidation reduces infrastructure complexity by eliminating duplicate gateway installations while maintaining the ability to handle failures through dynamic reassignment
3Reliability
If spot beam coverage areas are expanded to provide redundancy, then service continuity is improved, but interference between beams increases
Solution Approach 1:
The system applies local quality by assigning different frequency resources to different spot beams in a spatially distributed manner. Each spot beam uses specific frequency assignments tailored to its location and coverage area, allowing coverage expansion while managing interference through localized frequency planning
Solution Approach 2:
The system resolves interference by transitioning from a two-dimensional spatial problem to a four-dimensional solution space that includes frequency and time dimensions. Through frequency reuse patterns and time-division multiplexing, the system can expand spot beam coverage while managing interference by allocating resources across multiple dimensions
Data Source
Figure 1
Figure 2A
Figure 2B~2C
AI summary
A method and system are presented for providing satellite communications coverage for a geographical area involving operating a plurality of gateways including a first gateway and a second gateway, wherein the first gateway is configured to utilize at least one first spot beam associated with at least one first coverage area within the geographic area to provide relayed satellite communications to a plurality of first subscriber terminals located in the at least one first coverage area, wherein the second gateway is configured to utilize at least one second spot beam associated with at least one second coverage area within the geographic area to provide relayed satellite communications to a plurality of second subscpber terminals located in the at least one second coverage area, and upon a failure condition associated with the at least one first spot beam, expanding the at least one second coverage area.