Satellite Backhaul Voice-Data Separation for Local Voice Routing
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Solution Overview
Problem
Existing cellular systems using satellite backhaul networks route all traffic types to a single destination, leading to inferior user experience due to increased latency and costs, especially in regions with limited internet infrastructure.
Innovation Solution
Implement a satellite backhaul system that separates voice and data traffic, routing voice locally within a region to avoid long-distance billing and data to regions with better internet infrastructure, using a traffic classifier to distinguish between traffic types and route them via separate satellite links.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If all traffic types are routed to a single destination via satellite backhaul, then the system structure is simple, but latency increases and user experience deteriorates
Solution Approach 1:
The patent segments traffic into different types (voice, data, video) and routes each type through separate satellite links to different destinations. Voice traffic is routed to a local gateway within the same country, data traffic to an international gateway with better internet infrastructure, and video traffic to a dedicated gateway. This segmentation resolves the contradiction by creating multiple specialized paths that reduce latency for time-sensitive traffic while maintaining manageable system complexity through structured organization.
2Device complexity
If all traffic is routed internationally via satellite backhaul, then connectivity is simplified, but international billing charges increase
Solution Approach 1:
The patent applies local quality by routing voice traffic to a local gateway within the same country rather than routing all traffic internationally. This allows voice communications to be handled locally, avoiding international billing charges, while still utilizing the satellite backhaul infrastructure. The system intelligently determines the optimal routing path based on traffic type and destination, reducing operational costs without compromising connectivity.
3Area of stationary object
If satellite backhaul is used for all traffic, then coverage is extended to underserved areas, but user experience for voice and data deteriorates compared to terrestrial links
Solution Approach 1:
The patent segments different traffic types and routes them through optimized paths to mitigate satellite backhaul limitations. Time-sensitive voice traffic is routed to local gateways with lower latency, while data traffic is routed to international gateways with better internet infrastructure. This segmentation allows the system to extend coverage to underserved areas while maintaining acceptable user experience by matching traffic types to appropriate routing paths.
Solution Approach 2:
The patent introduces intelligent traffic classification and routing gateways as intermediaries between the satellite backhaul and end users. These intermediaries analyze traffic characteristics and direct different traffic types through optimal paths, effectively mediating between the limitations of satellite backhaul and user experience requirements. The gateway infrastructure acts as a buffer that improves perceived reliability without requiring changes to the satellite link itself.
4Loss of time
If traffic classification and separate routing is implemented, then latency and costs are reduced, but system complexity increases
Solution Approach 1:
The patent implements traffic classification that segments traffic into distinct categories (voice, data, video) with different quality requirements. Each segment is routed through dedicated satellite links to appropriate gateways. While this increases system complexity, the segmentation allows for optimized performance of each traffic type, with the complexity managed through standardized routing rules and protocols.
Solution Approach 2:
The patent employs dynamic routing that adapts to traffic conditions and requirements. The system can dynamically select routing paths based on traffic type, current network conditions, and destination requirements. This dynamic approach allows the system to optimize latency and cost in real-time while managing complexity through flexible, condition-based routing logic rather than static configurations.
Data Source
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AI summary
A cellular system and method to provide voice and data services to a user terminal are disclosed. The cellular system includes a cellular base station; a satellite backhaul including a first satellite link and a second satellite link; and a traffic classifier to classify traffic from the cellular base station as voice traffic for transportation via the first satellite link and as data traffic for transportation via the second satellite link.