Wireless Link Load Control for Mining Machine Communication
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Solution Overview
Problem
In mining and tunnelling, reliable data communication between machines and remote control stations over wireless links is often compromised due to varying communication capacities, leading to potential loss of communication and safety risks, especially when machines are in motion or operating in environments with limited infrastructure.
Innovation Solution
A method that estimates the communication capacity of wireless links by measuring round-trip time and adapts data transmission rates to prevent congestion, prioritizing critical data transmission and reducing non-essential data when capacity is low, ensuring continuous and safe operation of remote-controlled or autonomous machines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data transmission rate is increased to improve communication efficiency, then productivity is improved, but reliability deteriorates due to communication congestion and loss
Solution Approach 1:
The system dynamically adapts the data transmission rate based on real-time communication capacity estimates. The transmission rate is not fixed but varies over time according to the estimated available capacity of the wireless link, allowing the system to optimize between productivity and reliability by adjusting the rate to match current network conditions.
Solution Approach 2:
The system implements a feedback mechanism where communication capacity is continuously estimated based on round-trip time measurements. This feedback information is used to adjust the data transmission rate, creating a closed-loop control system that responds to changing network conditions and maintains reliable communication while maximizing data throughput.
2Reliability
If adaptive transmission rate control is implemented to improve reliability, then communication stability is improved, but device complexity increases
Solution Approach 1:
The system changes the transmission rate parameter based on estimated communication capacity. By monitoring round-trip time and adjusting the transmission rate accordingly, the system maintains stable communication without requiring complex control algorithms. The approach relies on simple parameter adjustment rather than sophisticated control mechanisms.
3Measurement precision
If round-trip time measurement is used to estimate communication capacity, then measurement precision is improved, but loss of time increases due to additional measurement overhead
Solution Approach 1:
The round-trip time measurement serves multiple functions simultaneously: it is used both for estimating communication capacity and for triggering adaptive transmission rate adjustments. By making the measurement serve dual purposes, the system avoids additional dedicated measurement overhead while achieving precise capacity estimation.
Data Source
AI summary
The present invention relates to a method for 1 for controlling transmission of data in a data communication network, the transmission of data being a transmission of data between a mining and/or construction machine and a network node of said data communication network, said transmission of data being carried out at least partly over a wireless communication link. The method comprises: —estimating a measure of the communication capacity of said wireless link, the estimation being based at least partly on a round-trip time of a transmission over said wireless communication link, and —adapting the data transmission load of said mining and/or construction machine on the wireless communication link on the basis of said measure. The invention also relates to a system and a mining and/or construction machine.