VSAT Hub Bandwidth Allocation for Burstable Traffic
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Solution Overview
Problem
Current satellite hub devices using D-TDMA platforms are unable to effectively manage burstable bandwidths and overall bandwidth pool reservation due to the size disparity between out-route and in-route carriers, leading to insufficient bandwidth allocation for remote VSATs.
Innovation Solution
A mechanism is implemented in the hub device to calculate and allocate burstable and allocated bandwidths, ensuring that VSAT carriers have sufficient bandwidth exceeding a minimum target burstable bandwidth, which involves re-calculating bandwidth based on customer requests and acquiring additional resources if necessary, such as installing line cards, to provide the required bandwidth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If D-TDMA platform is used to manage bandwidth, then bandwidth allocation can be controlled, but burstable bandwidth management and bandwidth pool reservation become unmanageable due to size disparity between out-route and in-route carriers
Solution Approach 1:
The patent segments the bandwidth management into separate components: out-route carrier management for the satellite hub and in-route carrier management for remote VSATs. This segmentation allows independent management of the large out-route carrier and small in-route carriers, resolving the contradiction between ease of operation and adaptability to burstable bandwidth requirements.
Solution Approach 2:
The patent implements dynamic bandwidth allocation where the hub device can dynamically adjust bandwidth parameters for in-route carriers based on actual traffic conditions and customer requests. This dynamic approach enables effective management of burstable bandwidth while maintaining operational control through the D-TDMA platform.
2Reliability
If small in-route carriers are used for remote VSATs, then VSATs can consistently transmit information, but sufficient bandwidth for burstable traffic cannot be guaranteed
Solution Approach 1:
The patent applies preliminary action by pre-allocating bandwidth parameters and establishing bandwidth pools before actual traffic occurs. The hub device calculates and reserves bandwidth in advance, ensuring that when burstable traffic needs to occur, sufficient bandwidth is already available. This maintains reliable consistent transmission while guaranteeing adequate bandwidth capacity.
Solution Approach 2:
The patent changes bandwidth parameters dynamically based on traffic conditions and customer requests. When a customer requests additional bandwidth, the system recalculates and adjusts bandwidth parameters, allowing the system to adapt from fixed small carrier parameters to variable parameters that guarantee sufficient bandwidth for burstable traffic while maintaining consistent transmission reliability.
3Productivity
If bandwidth is allocated using calculated method with oversubscription ratio, then bandwidth can be managed efficiently, but bandwidth pool reservation for in-route carriers cannot be effectively controlled
Solution Approach 1:
The patent implements feedback mechanisms where the hub device continuously monitors bandwidth usage and customer requests. When bandwidth requests are received, the system uses this feedback to recalculate and adjust bandwidth allocations. This feedback loop enables effective control of bandwidth pool reservation while maintaining efficient management through the calculated method with oversubscription ratios.
Solution Approach 2:
The patent performs preliminary calculations of bandwidth requirements and pre-reserves bandwidth pools before actual allocation occurs. By calculating the total bandwidth needed and reserving it in advance, the system achieves both efficient management through calculated methods and effective control of bandwidth pool reservation, as the reserved bandwidth is guaranteed to be available when needed.
Data Source
AI summary
A device receives bandwidth information associated with a very small aperture terminal (VSAT) network. The device calculates burstable and allocated bandwidths for VSAT carriers of the VSAT network to ensure that the VSAT carriers have bandwidth available for traffic that exceeds a minimum target burstable bandwidth. The device also implements the burstable and allocated bandwidths in the VSAT network.