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ROC Latency Budgeting Template (Excel)

The ROC Latency Budgeting Template (Excel) is a structured spreadsheet tool used in the design and validation of Mine Remote Operations Centers to quantify, allocate, and track end-to-end latency contributions across telemetry, control, video, and audio signal paths. It enables engineers to ensure total system latency remains within operational safety and performance thresholds—typically ≤500 ms for critical teleoperation loops. The template supports traceability from physical layer components (e.g., radios, encoders) to application-layer protocols (e.g., MQTT, RTP, OPC UA).

📖 Overview

Latency budgeting is a foundational systems engineering practice in remote mining operations, where real-time situational awareness and operator response fidelity directly impact safety, productivity, and equipment integrity. The ROC Latency Budgeting Template formalizes this practice by decomposing the total allowable latency—defined per use case (e.g., autonomous haul truck supervision vs. manual drill teleoperation)—into discrete, measurable contributors: network propagation, packet serialization, codec processing, queuing delays, jitter buffers, and application-layer overhead. Each component is assigned a target budget, measured value, margin, and verification method (e.g., RFC 3393 one-way delay tests, Wireshark timestamp analysis), enabling rigorous gap analysis and design trade-off evaluation. The template also incorporates uncertainty factors (e.g., ±15% for wireless handover variability) and integrates with broader ROC architecture artifacts such as network topology diagrams, cybersecurity zoning maps, and human-machine interface (HMI) response time requirements. By enforcing discipline in latency accounting early in the ROC design lifecycle, the template mitigates late-stage integration risks—such as unanticipated video lag causing motion sickness or control-loop instability—and supports regulatory compliance (e.g., ISO 26262 ASIL-B considerations adapted for mining automation).

📑 Key Components

1 Use Case–Specific Latency Targets
2 End-to-End Signal Path Breakdown (Telemetry/Control/Video/Audio)
3 Margin & Uncertainty Allocation Columns

🎯 Applications

  • ROC system architecture validation during FEED (Front-End Engineering Design)
  • Vendor proposal evaluation for network infrastructure and edge compute hardware
  • Operational readiness assessment prior to ROC commissioning and crew training

📐 Key Formulas

Total End-to-End Latency

Σ(Propagation_Delay + Serialization_Delay + Processing_Delay + Queuing_Delay + Jitter_Buffer_Delay + Application_Overhead)

Sums all deterministic and statistical latency contributors across the signal path

Latency Margin

Allowable_Latency − Measured_or_Budgeted_Total_Latency

Quantifies remaining headroom before violating operational threshold

Uncertainty-Adjusted Budget

Allocated_Budget × (1 + Uncertainty_Factor)

Applies conservative scaling to account for environmental or implementation variability (e.g., 0.15 for LTE-R link fluctuations)

🔗 Related Concepts

Teleoperation Loop Closure Time Deterministic Networking (TSN) OT/IT Convergence Architecture

📚 References

#mining automation #remote operations #latency engineering #systems integration #Excel template