Partial Mesh Satellite Link Channel Allocation
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Solution Overview
Problem
Hub-spoke satellite communication architectures are sub-optimal for direct terminal-to-terminal communications due to increased satellite bandwidth and latency requirements, as all communications must go through a central hub, whereas mesh architectures are more suitable but not compatible with existing standards-based RCS systems.
Innovation Solution
The integration of a partial mesh architecture into existing hub-spoke systems, allowing remote terminals to communicate directly while maintaining compatibility with DVB-RCS standards by utilizing existing RCS capabilities, such as MF-TDMA channels, and extending MAC layer functionality to support simultaneous mesh operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hub-spoke architecture is used, then network control and standard compliance are improved, but communication efficiency and latency are worsened
Solution Approach 1:
The communication system is segmented into two distinct modes: hub-spoke mode for standard-compliant communications and mesh mode for efficient direct terminal-to-terminal communications. This segmentation allows each mode to operate optimally without compromising the other, resolving the contradiction between standard compliance and communication efficiency.
Solution Approach 2:
The system dynamically switches between hub-spoke and mesh communication modes based on the specific communication requirements. Terminals can transition between modes as needed, allowing the system to adapt to different scenarios - using hub-spoke for standard compliance and mesh for latency-sensitive applications.
2Ease of operation
If hub-spoke architecture is used, then network control is improved, but bandwidth consumption is worsened
Solution Approach 1:
The system segments traffic into hub-spoke traffic (requiring network control) and mesh traffic (requiring direct connectivity). By segmenting the communication paths, the system can allocate bandwidth efficiently - using hub-spoke for control functions and mesh for data traffic, thereby reducing overall bandwidth consumption while maintaining network control capabilities.
Solution Approach 2:
The hub acts as an intermediary that facilitates mesh communications by allocating bandwidth and managing resources, rather than requiring direct hub-to-terminal connections for all traffic. This intermediary role allows the hub to control mesh operations indirectly, reducing the bandwidth burden on individual terminal-hub connections.
3Productivity
If mesh architecture is used, then communication efficiency is improved, but system compatibility with existing standards is worsened
Solution Approach 1:
The system implements multi-functionality by supporting both hub-spoke and mesh communication modes within the same network infrastructure. Terminals are designed to operate in both modes, making them universal devices that can adapt to different communication requirements while maintaining compatibility with existing DVB-RCS standards.
Solution Approach 2:
The communication system is segmented into standard-compliant hub-spoke mode and efficient mesh mode. This segmentation allows the system to maintain compatibility with existing standards when needed while enabling efficient direct communications when mesh mode is activated, thus resolving the contradiction between standard compatibility and communication efficiency.
Data Source
AI summary
A partial mesh link channel is established within a satellite communication system by allocating return link channel resources to the partial mesh link channel.