Network Parameter Determination for Bandwidth Optimization
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Solution Overview
Problem
Existing bandwidth reservation systems for industrial embedded systems, such as those described in Patent Literatures 1 and 2, do not account for cases where the number of transmission rate control units is limited, leading to inefficiencies in network utilization, especially when some node pairs do not transmit, resulting in wasted reserved bandwidth.
Innovation Solution
A parameter determination apparatus and method that receives topology and node pair information to determine groups of node pairs and assign transmission rates, optimizing network utilization by considering non-communicating nodes and limited rate control units, thereby maximizing network efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If bandwidth reservation is carried out by determining transmission rate for each node pair to maximize network bandwidth utilization, then network utilization efficiency is improved, but the number of transmission rate control units required increases
Solution Approach 1:
The patent groups multiple node pairs into a single transmission rate control unit, merging the control of multiple node pairs under one unit. This reduces the total number of transmission rate control units needed while maintaining network utilization efficiency by dynamically adjusting rates based on actual communication needs of grouped node pairs.
Solution Approach 2:
Each transmission rate control unit is designed to handle multiple node pairs simultaneously, making the control unit universal in its function. This multi-functionality allows a single control unit to manage bandwidth reservation for several node pairs, reducing the overall number of control units required in the system.
2Device complexity
If the number of transmission rate control units is limited, then device complexity is reduced, but network utilization efficiency decreases due to inability to group node pairs
Solution Approach 1:
The patent merges multiple node pairs into groups that are managed by a single transmission rate control unit. This grouping strategy allows the system to maintain high network utilization efficiency even with a limited number of control units, as each control unit efficiently manages multiple node pairs based on their communication patterns and bandwidth requirements.
3Measurement precision
If transmission rate is determined for each node pair individually, then transmission precision is improved, but loss of bandwidth occurs when node pairs do not transmit
Solution Approach 1:
The patent combines multiple node pairs into groups for shared transmission rate control. This merging approach maintains precise rate determination by considering the collective communication needs of grouped node pairs, while reducing bandwidth wastage through dynamic rate adjustment based on actual transmission activity across the group, rather than maintaining static reservations for each individual node pair.
Solution Approach 2:
The transmission rate control units dynamically adjust transmission rates based on actual communication activity of grouped node pairs. This dynamic control allows the system to maintain precise rate determination while adapting to changing transmission needs, thereby reducing bandwidth wastage when node pairs are not actively transmitting by lowering rates or releasing reserved bandwidth.
Data Source
AI summary
A parameter determination apparatus is provided with: an input/output I/F configured to receive topology information representing connections between nodes included in a communication system, and node pair information indicating node pairs that communicate with each other; a parameter determination unit configured to simultaneously determine, based on the topology information and the node pair information, a group formed of 1 or more node pairs and a transmission rate to be assigned to the group; and a parameter setting unit configured to give notification of the group and the transmission rate to the nodes included in the communication system. In this way, network utilization efficiency is increased.