Relay Device Bus Bandwidth Allocation for Traffic Congestion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Decentralized buses in semiconductor integrated circuits face challenges in transmission scheduling, leading to increased delay time, jitter, and decreased throughput due to interference among traffics, as conventional relay devices adjust scheduling independently based on local conditions without considering overall circuit efficiency.
Innovation Solution
A relay device with a congestion information processing section, congestion information comparison section, and transmission scheduling adjustment section that quantifies congestion levels across multiple traffics and adjusts the transmission band allocation to prioritize traffics with lower congestion, using switch allocation and packet disposal mechanisms to optimize traffic flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each relay device adjusts transmission scheduling independently based on local conditions, then local transmission quality is maintained, but overall circuit transmission performance deteriorates due to interference among traffics
Solution Approach 1:
The patent implements a feedback mechanism where relay devices exchange congestion information with adjacent relay devices. Each relay device receives congestion information from neighbors, compares it with local congestion data to determine congestion levels, and adjusts transmission scheduling based on this feedback loop. This enables coordinated traffic management across the circuit while maintaining local quality of service.
Solution Approach 2:
The patent combines local congestion information with congestion information from adjacent relay devices to form a comprehensive view of traffic conditions. By merging these data sources and comparing them, the system determines overall congestion levels and adjusts scheduling accordingly, achieving both local and global optimization simultaneously.
2Ease of operation
If transmission scheduling is adjusted equally among all traffics at each relay device, then fairness is maintained, but delay time and jitter increase due to interference
Solution Approach 1:
The patent applies different transmission scheduling policies to different traffics based on their local congestion levels. Instead of uniform scheduling, each traffic receives customized bandwidth allocation proportional to its congestion level, allowing critical traffics with lower congestion to be prioritized while maintaining fairness principles through transparent, rule-based differentiation.
Solution Approach 2:
The patent dynamically changes transmission parameters (bandwidth allocation, scheduling priority) based on congestion levels. The transmission band assigned to each traffic is adjusted according to its congestion level, which is derived from comparing local and adjacent relay device congestion information. This enables adaptive response to changing traffic conditions.
3Productivity
If more transmission bands are allocated to handle increased traffic flow, then throughput capacity increases, but interference among traffics worsens and transmission quality decreases
Solution Approach 1:
The patent dynamically adjusts transmission parameters (bandwidth allocation, scheduling priority) based on real-time congestion levels. When congestion is detected, the system changes parameters to reduce interference and maintain quality; when congestion is low, parameters are adjusted to maximize throughput capacity.
Solution Approach 2:
The patent implements dynamic transmission scheduling where bandwidth allocation and scheduling policies are continuously adjusted based on congestion levels. This dynamic approach allows the system to adapt to changing traffic conditions, maximizing throughput when possible while maintaining transmission quality when congestion occurs.
Data Source
AI summary
A relay device includes a switch for switching a combination of an input for receiving traffic data and an output for sending the traffic data; a congestion information processing section for obtaining congestion information indicating a degree of congestion of each of a plurality of traffics from an adjacent relay device, and congestion information of each traffic in the relay device; a congestion information comparison section for finding information on a congestion level which quantitatively indicates difficulty of flowing of each traffic on a transmission route based on the congestion information obtained from the adjacent relay device and the congestion information of the relay device; a transmission scheduling adjustment section for assigning a transmission band of a bus to each traffic based on the congestion level; and a switch assignment section for shifting the switch based on a result of the assignment of the transmission band of the bus.