Dynamic Bandwidth Allocation in Multiplexing Networks
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Solution Overview
Problem
Existing multiplexing network systems, such as those using the IEEE 1394 bus, face limitations in expanding the number of connected media devices due to fixed bandwidth allocations, leading to inefficient use of bandwidth and reduced flexibility when adding new devices not intended during system design.
Innovation Solution
A multiplexing network system where a master device manages bandwidth and data stream compression rates dynamically, using first and second management information to recognize used bandwidth and data types, allowing variable compression rates for efficient bandwidth allocation and system expansion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of media devices is increased beyond the design stage, then system expandability is improved, but bandwidth allocation becomes insufficient and system reliability deteriorates
Solution Approach 1:
The patent implements dynamic bandwidth allocation by allowing the master device to reassign bandwidth portions to slave devices based on their actual data transmission requirements. The bandwidth allocation is no longer fixed at design stage but adapts dynamically when new slave devices are connected, resolving the contradiction between system expandability and bandwidth allocation reliability.
Solution Approach 2:
The system changes the bandwidth parameter dynamically based on the number of connected slave devices. When a new slave device is added, the master device recalculates and redistributes bandwidth portions among all slave devices, ensuring that the total bandwidth remains within the digital transmission path capacity while accommodating the expanded system.
2Adaptability or versatility
If bandwidth is allocated to accommodate additional media devices, then system flexibility is improved, but the total bandwidth exceeds the digital transmission path capacity causing data transfer failures
Solution Approach 1:
The master device continuously monitors the data transmission requirements of slave devices and adjusts bandwidth allocation accordingly. This feedback mechanism ensures that the allocated bandwidth precisely matches the actual needs of the system, preventing both under-allocation and over-allocation that would cause data transfer failures.
Solution Approach 2:
The bandwidth allocation system transitions from a static, design-stage fixed allocation to a dynamic allocation that adapts in real-time based on the number of connected slave devices and their data transmission requirements, achieving precise bandwidth utilization.
3Device complexity
If fixed compression rates are used for data streams, then system complexity is reduced, but the ability to accommodate new media devices deteriorates
Solution Approach 1:
The system implements dynamic compression rate adjustment where the master device can modify compression rates for different slave devices based on their specific requirements and the current system configuration. This dynamic approach maintains relatively simple system architecture while significantly improving media device compatibility and system expandability.
Data Source
AI summary
In a multiplexing network system in which media devices are interconnected through a digital transmission path, during system startup, a device that is used as a master device holds management information for recognizing bands used by media devices connected to the digital transmission path and management information for recognizing what type of data is output/received between the media devices. During the system startup, the master device refers to the management information to set the compression rates of data streams transferred between the media devices to be variable.