Start small, land value, scale fast. Validate one or two high-ROI use cases, then expand coverage and capabilities—RAN, core, edge compute, and security—without disrupting OT.
Step 0: Pick Use Cases That Pay for the Network
Shortlist 1–2 “fund-the-journey” wins:
- AGVs/AMRs needing deterministic mobility
- Computer vision QA on lines with real-time alarms
- Connected tooling and digital work instructions
- Condition monitoring on critical assets
Define hard KPIs: First-pass yield, unplanned downtime, takt time, and safety incidents.
Step 1: Spectrum & Architecture
- Spectrum: Licensed, shared (e.g., local allocation), or enterprise leasing—balance cost vs. interference risk.
- Architecture: SA (Standalone) 5G with R16 features for URLLC-grade control and future slicing.
- Coverage: Start with hot zones (lines, warehouses) before campus-wide.
Step 2: RAN Design & Site Survey
- RF survey (multipath, metal clutter, moving throughput sinks).
- Plan small cells vs. macro-style indoor radios; ensure overlap for handovers.
- Backhaul and PoE/power plans early to avoid install delays.
KPI: >99.9% session success, handover interruption <50 ms for mobile robots.
Step 3: Core, Edge, and Data Flows
- Private core (on-prem or hybrid) for data sovereignty and latency.
- Edge compute for vision inference, OT gateways, and real-time analytics.
- Data model: Normalize tags from PLCs, historians, and MES into a common namespace.
Security by design: Zero-trust device onboarding (eSIM/eUICC), per-slice policies, and micro-segmented OT/IT paths.
Step 4: Integrations with OT
- Connect to MES/SCADA/PLCs via secure gateways; avoid direct L3 adjacency where possible.
- Create Digital SOPs (what to do when network alarms fire).
- Validate determinism for motion control—keep Wi-Fi for non-critical HMIs.
Step 5: Pilot, Prove, Expand
- 30–60 day pilot in a live cell with production constraints.
- Measure: packet loss, jitter, throughput under real load, and business KPIs.
- Expansion plan: additional halls, yards, then upstream suppliers.
Step 6: Operations & Governance
- NOC/TOC playbook: Performance thresholds, paging, and runbooks.
- Lifecycle: Patch RAN/core quarterly; security posture reviews bi-annually.
- Capacity planning: Seasonal peaks, new SKUs, layout changes.
Cost & ROI Framing
- Start with CapEx-lite (small coverage, essential edge).
- Treat each added use case as a profit center (document savings/throughput uplift).
- Track MTTR, throughput/line, defect escapes, and forklift safety events.
Common Pitfalls to Avoid
- Boiling the ocean (campus-wide build before value).
- Ignoring OT change management and shift-lead buy-in.
- Over-indexing on Mbps while under-delivering on latency/jitter.
- Weak identity management for devices (rogue UE risk).
Final Word
Factories do not need “5G everywhere.” They need 5G where it moves KPIs. Prove it on one line, then scale.