Centralized Bandwidth Manager for Satellite Terminal Groups
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Solution Overview
Problem
Existing methods for managing bandwidth in shared access broadband networks struggle to allocate resources efficiently across logically grouped but physically dispersed terminals, leading to spectral unfairness and suboptimal throughput, especially during congestion.
Innovation Solution
A centralized bandwidth management system that dynamically allocates bandwidth across terminal groups based on demand, spectrum efficiency, and throughput, using code rate organizers and a bandwidth manager to ensure proportional fairness and optimal spectrum utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing bandwidth management methods are used for individually dispersed terminals, then individual terminal service can be maintained, but spectral fairness and overall network throughput deteriorate when terminals are logically grouped
Solution Approach 1:
The patent merges multiple individual terminal bandwidth management functions into a unified terminal group bandwidth management mechanism. The network controller aggregates bandwidth requests from multiple terminals belonging to the same logical group and allocates bandwidth to the group as a whole based on group-level QoS parameters, thereby improving spectral fairness and overall network throughput while maintaining compatibility with existing individual terminal services.
2Reliability
If bandwidth is allocated based on individual terminal needs, then individual QoS requirements can be met, but overall spectrum utilization efficiency deteriorates during network congestion
Solution Approach 1:
The patent implements a dynamic bandwidth allocation mechanism that adapts to network conditions and terminal group characteristics. The network controller continuously monitors network congestion status and adjusts bandwidth allocation strategies in real-time. During congestion, the system dynamically prioritizes terminal groups based on their QoS requirements and current network state, thereby maintaining QoS satisfaction while optimizing spectrum utilization efficiency.
Solution Approach 2:
The patent changes the allocation parameters from individual terminal-level parameters to terminal group-level parameters. The network controller uses group-level QoS parameters such as aggregate bandwidth requirements, priority levels, and service type classifications to make bandwidth allocation decisions. This parameter transformation enables more efficient spectrum utilization during congestion while still meeting individual QoS requirements through group-based resource pooling.
3Reliability
If centralized bandwidth management for terminal groups is implemented, then spectral fairness and throughput are improved, but system complexity increases
Solution Approach 1:
The patent designs the network controller to perform multiple functions: it maintains existing individual terminal bandwidth management capabilities while simultaneously implementing new terminal group bandwidth management functions. The controller can dynamically switch between individual terminal allocation and terminal group allocation based on network conditions and service requirements, thereby improving spectral fairness without requiring separate dedicated management systems for each mode.
Data Source
AI summary
Systems and methods are provided to achieve dynamic bandwidth allocation among terminal groups (TGs) with proportional fairness in terms of both throughput and spectrum usage across a network. Quality of service (QoS) metrics for such TGs can be satisfied in terms of maximum throughput and spectrum utilization, while also satisfying QoS metrics such as latency, throughput, and prioritized traffic services for individual terminals within the TGs. A centralized bandwidth manager can be utilized to manage such dynamic bandwidth allocation across multiple Code Rate Organizers (CROs), including environments in which the multiple CROs manage communications across multiple IPGWs for multiple terminal groups. Because, in such environments, a given conventional CRO cannot effectively manage allocations across the entire network, the centralized bandwidth management functionality can be introduced to assess the flows for multiple TGs across multiple CROs and to make bandwidth allocations accordingly.