Dynamic Bus Bandwidth Adjustment for Power-Performance Trade-offs
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Solution Overview
Problem
In wireless communication systems, increasing bus bandwidth to enhance performance leads to higher power consumption, necessitating a balance between performance and power saving.
Innovation Solution
A communication device with a determination module to set traffic thresholds and an adjustment module that compares current traffic to these thresholds, dynamically adjusting the bus bandwidth to optimize power usage based on application scenarios, link speed, and lane numbers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If bus bandwidth is increased to enhance performance, then throughput is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic bus bandwidth adjustment by comparing current traffic against first and second traffic thresholds. When traffic exceeds the first threshold, the system upgrades to a first bus bandwidth; when traffic falls below the second threshold, it downgrades to a second bus bandwidth. This dynamic adaptation allows the system to optimize throughput during high-traffic periods while reducing power consumption during low-traffic periods, directly resolving the contradiction between performance and energy usage.
Solution Approach 2:
The system changes the bus bandwidth parameter based on traffic conditions. By adjusting the bandwidth parameter between two states (first bus bandwidth and second bus bandwidth) according to traffic thresholds, the system achieves variable performance levels that match actual needs, thereby improving the productivity-to-power-consumption ratio without sacrificing necessary performance.
2Productivity
If bus bandwidth is continuously kept large to maintain performance, then throughput is preserved, but power consumption increases
Solution Approach 1:
The system employs periodic monitoring of traffic conditions against predefined thresholds and adjusts bus bandwidth accordingly. This periodic action ensures that the system maintains high throughput only when necessary (when traffic exceeds the first threshold) while reducing power consumption during periods of low traffic, avoiding continuous high-power operation and the associated energy waste.
Solution Approach 2:
The patent implements a feedback mechanism where current traffic is continuously monitored and compared against traffic thresholds. Based on this feedback, the system automatically adjusts bus bandwidth to match actual demand, preventing unnecessary high-power consumption when full bandwidth is not needed while ensuring performance is maintained when traffic requires it.
Data Source
AI summary
A communication device includes a determination module for determining a first traffic threshold and a second traffic threshold, wherein the first traffic threshold is greater than the second traffic threshold; a comparison module, coupled to the determination module, for comparing a current traffic, the first traffic threshold and the second traffic threshold to generate a comparison result; and an adjustment module, coupled to the comparison module, for adjusting a first bus bandwidth to a second bus bandwidth according to the comparison result.