PCIe Lane Allocation Module for Dynamic Bandwidth Optimization
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Solution Overview
Problem
Current PCIe bus lane allocation methods do not consider the data transmission needs of peripheral devices, leading to inefficient bandwidth utilization based solely on physical structure rather than performance capabilities.
Innovation Solution
A lane allocation module determines the performance capabilities of devices connected to the PCIe bus and allocates lanes accordingly, ensuring data transfer rates match device capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If lane allocation is based on physical structure of peripheral device, then device compatibility is ensured, but bandwidth utilization efficiency deteriorates
Solution Approach 1:
The patent implements dynamic lane allocation where the system determines the actual data transmission needs of peripheral devices and allocates PCIe lanes accordingly, rather than using fixed physical structure-based allocation. This allows the lane configuration to adapt dynamically to the real performance requirements of each device, resolving the contradiction between compatibility and efficiency.
Solution Approach 2:
The system changes the allocation parameter from fixed physical structure to variable performance capability-based allocation. By determining the actual data transmission capabilities and requirements of peripheral devices, the system adjusts the number of lanes allocated to each device, optimizing bandwidth utilization while maintaining compatibility through standardized PCIe interfaces.
2Device complexity
If fixed number of lanes is allocated to all devices, then allocation simplicity is maintained, but data transfer efficiency deteriorates
Solution Approach 1:
The patent enables the system to automatically determine the performance capabilities of each peripheral device and self-allocate the appropriate number of PCIe lanes without manual intervention. The lane allocation module queries device capabilities and performs allocation based on actual needs, maintaining simplicity while achieving optimized data transfer efficiency.
Solution Approach 2:
The system implements a feedback mechanism where the lane allocation module determines the performance capabilities of connected devices and uses this information to adjust lane allocation. This closed-loop approach ensures that lane allocation reflects actual device requirements, improving data transfer efficiency while maintaining automated simplicity.
3Productivity
If PCIe bus lanes are shared among multiple devices, then resource utilization is improved, but bandwidth availability for individual devices deteriorates
Solution Approach 1:
The patent segments the PCIe bus lanes and allocates them to different devices based on determined performance capabilities and actual data transmission needs. Rather than uniform sharing, the system divides lane resources proportionally according to each device's requirements, ensuring both efficient resource utilization and sufficient bandwidth availability for each device.
Data Source
AI summary
Allocating lanes in a Peripheral Connect Interface Express (‘PCIe’) bus, including: determining, by a lane allocation module, performance capabilities of a device coupled to the PCIe bus; and allocating, by the lane allocation module, a number of lanes in the PCIe bus for use by the device in dependence upon the performance capabilities of the device.