Satellite Routing via Switching Label for Latency and Bit Rate Trade-offs
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Solution Overview
Problem
Current satellite network topologies either suffer from high latency in star networks or limited spectral efficiency in mesh networks, requiring separate modems and complex IP routing for multimedia services, leading to inefficiencies and increased complexity in user terminals.
Innovation Solution
A method that integrates mesh and star network topologies by using a switching label in the data stream's header to dynamically route data through a concentrator, allowing the same spectral resources to be used for both direct and indirect routes, thereby optimizing bit rates and latency based on the type of data stream.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If mesh network topology is used, then latency is minimized, but spectral efficiency and transmission bit rates are limited
Solution Approach 1:
The patent implements dynamic topology switching that allows the network to adapt between mesh and star configurations based on service requirements. The system can dynamically select direct mesh routing for latency-sensitive services and indirect star routing for high-speed data services, resolving the contradiction by making the topology flexible rather than fixed.
Solution Approach 2:
The invention changes the routing parameter by introducing a switching label that indicates whether to use direct (mesh) or indirect (star) routes. This parameter change allows the same physical infrastructure to support both low-latency and high-bit-rate transmissions by altering the logical path parameters.
2Productivity
If star network topology is used, then transmission bit rates are increased, but latency is doubled
Solution Approach 1:
The patent implements dynamic topology switching that allows the network to adapt between mesh and star configurations based on service requirements. The system can dynamically select direct mesh routing for latency-sensitive services and indirect star routing for high-speed data services, resolving the contradiction by making the topology flexible rather than fixed.
Solution Approach 2:
The concentrator acts as an intermediary that enables the star topology for high-bit-rate services. By introducing this central node, the system achieves high transmission rates through the concentrator's high-gain antenna while the switching mechanism ensures latency-sensitive traffic bypasses this intermediary, using direct mesh routing instead.
3Adaptability or versatility
If two separate networks (mesh and star) are used for different services, then service requirements are met, but terminal complexity and spectral resource usage increase
Solution Approach 1:
The patent merges mesh and star topologies into a single unified network infrastructure. The switching label mechanism allows both direct (mesh) and indirect (star) routing to coexist on the same spectral resources, eliminating the need for separate networks and reducing terminal complexity to a single modem while maintaining service-specific routing capabilities.
Solution Approach 2:
The unified network infrastructure provides universal support for both mesh and star routing modes. A single terminal with one modem can access both low-latency services (via direct routing) and high-speed data services (via concentrator routing), making the terminal multi-functional without requiring separate modems for each service type.
4Adaptability or versatility
If two separate networks are used for mesh and star topologies, then specific service requirements are met, but spectral efficiency decreases
Solution Approach 1:
The patent merges mesh and star topologies into a single unified network infrastructure. The switching label mechanism allows both direct (mesh) and indirect (star) routing to coexist on the same spectral resources, eliminating the need for separate networks and reducing terminal complexity to a single modem while maintaining service-specific routing capabilities.
Solution Approach 2:
The unified network enables continuous utilization of spectral resources for both mesh and star routing modes without requiring dedicated time slots or frequency separation. The same spectral resources are continuously available for both routing types, improving overall spectral efficiency by eliminating resource idle time and enabling dynamic allocation based on real-time service demands.
Data Source
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AI summary
A method for transmitting a data stream between a transmitter (110) and at least one receiver (120) in a satellite network comprising a concentrator (310), the method being characterized in that a switching label is inserted in a header of the data stream according to its nature, said switching label indicating whether the data stream is transmitted to the receiver via a direct route or via an indirect route through said concentrator, and in that, when said switching label indicates that the data stream is transmitted via an indirect route, said concentrator modifies the switching label of the data stream to indicate that it is transmitted via a direct route, and retransmits the modified data stream. Associated transmitting, retransmitting, and receiving equipment.