Wireless Network Path Control Minimizing Output Port Congestion
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Solution Overview
Problem
Existing path control methods in wireless communication networks lead to service interruptions and increased delay times when communication paths are changed, resulting in a decrease in the number of acceptable communications and an extension of delay times for both high and low priority traffic.
Innovation Solution
A path control method that searches for and selects communication paths to minimize the maximum number of communications passing through the same output port of signal transfer devices, thereby avoiding the extension of high priority signal transmittable periods and reducing delay times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a communication path is changed after being determined, then the network can adapt to changing conditions, but service interruption occurs and delay time increases
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing multiple alternative communication paths before they are needed. When a path change is required, the system can immediately switch to a pre-computed alternative path without performing real-time calculations, thus avoiding service interruption and maintaining reliability while achieving adaptability.
2Productivity
If multiple communications pass through the same output port of a signal transfer device, then path utilization is improved, but the high priority signal transmittable period is extended and delay time increases
Solution Approach 1:
The patent applies local quality by differentiating the handling of communications based on their priority levels. High priority communications are allocated dedicated time slots (high priority signal transmittable periods) during which only high priority traffic is transmitted, while low priority communications are transmitted during separate time slots. This local differentiation in transmission quality prevents high priority traffic from being delayed by low priority traffic, thus reducing delay time while still achieving good path utilization through statistical multiplexing.
3Quantity of substance
If the high priority signal transmittable period is extended to accommodate more communications, then more communications are accepted, but the delay time of high priority traffic increases
Solution Approach 1:
The patent applies periodic action by dividing the transmission period into periodic high priority signal transmittable periods and low priority signal transmittable periods. During each high priority period, only high priority communications are transmitted with guaranteed bandwidth, ensuring low delay time. During low priority periods, low priority communications are transmitted. This periodic structure allows the system to accept a large quantity of communications from both priority levels while ensuring that high priority traffic experiences minimal delay, as it always has dedicated transmission windows.
Data Source
AI summary
A path control method of controlling a communication path in a network including a plurality of wireless devices communicating with a terminal in a wireless manner and a plurality of wireless control devices communicating with any one of the plurality of wireless devices through a plurality of signal transfer devices includes searching for available communication paths and listing the available communication paths for individual combinations of a wireless device of the plurality of wireless devices and a wireless control device of the plurality of wireless control devices, and selecting a combination of communication paths in which a maximum value of the number of communications passing through the same output port of a signal transfer device of the plurality of signal transfer devices is minimized from among the listed available communication paths.