Satellite Gateway Queue Management for CoS and Modcod Bandwidth
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Solution Overview
Problem
Satellite communication systems face challenges in optimizing information transmission over limited resources due to scarcity of available frequencies and increasing data volume, necessitating improved efficiency in hardware and software solutions at ground stations and satellites.
Innovation Solution
Implementing a queue management system at the gateway with separate queues for class of service (CoS) and modulation and coding (Modcod) schemes, using a bandwidth controller to allocate resources intelligently based on channel conditions and service requirements, ensuring packets are prioritized and delayed or dropped strategically to maximize bandwidth utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If separate queues for CoS and Modcod schemes are implemented, then bandwidth allocation efficiency is improved, but device complexity increases
Solution Approach 1:
The patent divides the queue management system into two distinct sets of queues: CoS queues for class-of-service classification and Modcod queues for modulation-and-coding scheme classification. This segmentation allows independent management of service priorities and transmission parameters, resolving the contradiction by organizing complexity into manageable, functional segments that improve bandwidth allocation efficiency.
Solution Approach 2:
The patent introduces a two-dimensional queue structure where packets are classified along two independent dimensions: CoS (service priority) and Modcod (transmission characteristics). This dimensional approach transforms a single complex queue into a matrix of organized queues, improving allocation efficiency while making the complexity structured and controllable rather than chaotic.
2Reliability
If intelligent bandwidth allocation based on channel conditions is implemented, then transmission reliability is improved, but processing complexity increases
Solution Approach 1:
The patent implements feedback mechanisms where the gateway continuously monitors channel conditions and adjusts bandwidth allocation accordingly. The system uses feedback from channel quality indicators to dynamically modify Modcod assignments and CoS prioritization, ensuring transmission reliability adapts to real-time conditions without requiring overly complex processing at each node.
Solution Approach 2:
The patent performs preliminary classification and queue assignment of packets based on their CoS and Modcod requirements before transmission. By pre-organizing packets into appropriate queues and allocating bandwidth in advance based on channel conditions, the system ensures reliable transmission while reducing last-minute processing complexity during actual data transfer.
Data Source
AI summary
Described herein are systems, methods, and other techniques for managing queues for transmission of PDUs in a satellite communication system. The PDUs are received at a gateway having a first set of queues corresponding to different CoSs and a second set of queues corresponding to different Modcod schemes. The PDUs are loaded into the first set of queues in accordance with a set of CoS assignments. An available bandwidth in the second set of queues is allocated amongst the first set of queues. The PDUs are released from the first set of queues in accordance with the allocated available bandwidth. The PDUs are loaded into the second set of queues in accordance with a set of Modcod scheme assignments for the PDUs. The PDUs are released from the second set of queues for transmission in the satellite communication system.