5G Router for AGVs and AMRs: Coverage, Handover and Buying Checklist
The Robustel R5020-Lite Industrial 5G Router is a compact 5G router with two Gigabit Ethernet ports, dual SIM and one software-configurable RS-232 or RS-485 interface. Those are relevant onboard capabilities, but an AGV or AMR project succeeds on the route, not on the bench.
Metal racks move, vehicles turn, doors close, and a robot may pass from one radio environment into another while an application session remains active. The buying checklist must therefore cover coverage transitions, reconnection and safe behaviour—not just the best speed measured beside an access point or cellular antenna.
Walk the Route Before Choosing the Router
Map every normal path, charging point, waiting zone, lift, doorway and maintenance area. Add temporary obstructions such as parked vehicles, full racking and production material. Measure with the intended network at the planned antenna height and orientation on the vehicle.
Then run the route at production speed. A survey trolley or handheld device may not reproduce the antenna shadowing, power noise or motion of the final machine. Record where the link changes, how long packets are delayed or lost, and what the vehicle control application does during the transition.
Use this commissioning sequence:
- Prove stable registration and application traffic while stationary in every critical zone.
- Drive the complete route repeatedly under quiet and busy network conditions.
- Force loss of the preferred path and observe switching and application recovery.
- Stop in the weakest safe position and measure how the system behaves over time.
- Remove and restore power to the router while the AGV controller remains active.
- Repeat with the vehicle loaded and surrounding production in a representative state.
Handover Is an End-to-End Event
“Handover” can refer to movement between radio cells or access points, but the operational event extends further. IP addressing may change, a VPN may renegotiate, NAT state may expire, and the fleet-control session may need to reconnect. A radio transition that looks quick in network logs can still cause a longer pause at the application.
Robustel’s Reliable 5G Connectivity for AGVs on the Factory Floor Application Example lays out the intended roles around vehicle connectivity. It gives the project team a place to start its test map: the onboard router carries traffic, the radio network provides the path, and the fleet application determines what a delay or reconnection means operationally. Measure each boundary along the real route and retain application timestamps beside radio events. The example is not a universal handover benchmark.
Define acceptable behaviour with the automation supplier. Does the vehicle stop safely, continue a queued movement, or wait for fleet instructions? How long can it remain disconnected before the operational effect becomes unacceptable? These values belong in factory acceptance testing.
Onboard Interfaces and Power Decide the Mechanical Fit
Two Ethernet ports may be enough for an AGV controller and a service or secondary device. If the vehicle carries cameras, scanners and multiple controllers, an onboard switch may still be required. The serial interface is useful only when the connected equipment and protocol are explicitly compatible.
Check supply voltage, startup current, grounding, vibration, connector retention, antenna cable routing and shutdown behaviour. Avoid placing cellular antennas behind batteries, dense metalwork or moving loads. GNSS may have little value inside a factory unless a project also operates outdoors; optional hardware should be selected for a named requirement.
The Robustel R5020-Lite 5G router video provides a concise hardware overview. Route behaviour and application recovery must come from the moving-vehicle test, where the final antenna and machine layout are present.
How the Robustel R5020-Lite Industrial 5G Router Fits AGV and AMR Connectivity
The Robustel R5020-Lite industrial 5G router fits vehicles that need a compact cellular router, two Gigabit Ethernet connections and a selectable serial interface without the broader port set of the R5020. Dual SIM allows two physical subscriptions to be installed, while Robustel RCMS provides a managed view of deployed routers.
The combination matters operationally. A maintenance team can standardize the onboard router, observe the cellular estate centrally, and use the second subscription where the tested recovery policy requires it. That can shorten diagnosis when one robot behaves differently from the rest: the team can compare router state before dispatching an automation engineer to inspect the machine.
The R5020-Lite belongs in the vehicle-connectivity layer, outside autonomous-driving and safety-control responsibility. A private network, specialized Wi-Fi handover or safety-certified communication remains a separate design decision. The router is appropriate when its cellular, interface and environmental specifications match that tested system role.
| R5020-Lite integration decision | Evidence required on the vehicle | Release condition |
|---|---|---|
| Two Ethernet ports are sufficient | Final controller, service-device and switch topology | Every required connection has an owner and trust zone |
| Serial interface is required | Exact RS-232/RS-485 electrical and protocol specification | Production device exchanges validated data |
| Dual SIM is part of recovery | Independent subscriptions and tested switch policy | Fleet session recovers within the agreed operating limit |
| Router power is suitable | Supply range, startup current and brownout behaviour | Repeated start and shutdown tests leave controller state safe |
| Antenna position is acceptable | Final mounting, load and route survey | Worst-route application behaviour meets the acceptance rule |
The table should be completed per vehicle design, not once for the router family. A change in battery layout, controller or antenna position can invalidate an otherwise proven installation.
Test Fleet Recovery, Not One Perfect Vehicle
A pilot often uses one carefully installed robot and a lightly loaded network. Scale introduces simultaneous movement, overlapping traffic, software-version drift and field repairs. Repeat route tests with several vehicles and the normal application load, then stage failures while operations staff—not the project engineer—use the documented recovery procedure.
The Robustel’s 5G Connectivity and Remote Access for Autonomous Delivery Robots and Drones Application Example extends the architecture to other mobile machines and makes remote service a separate operating layer. That distinction matters when a fleet grows: a router may be online while the support session, vehicle application or safety response is not ready. Stage those failures with the normal operations team and time their recovery steps. Each robot design and route still needs its own acceptance result.
よくある質問
Q1. Do AGVs need Wi-Fi?
Not necessarily. AGVs and AMRs may use industrial Wi-Fi, private cellular, public cellular or another suitable wireless design. The choice depends on route coverage, application behaviour, ownership and recovery targets.
Q2. What is handover in a wireless network?
Handover is the transition of a device’s radio connection between cells or access points. For a robot, the practical result also depends on IP, VPN and application-session recovery.
Q3. Can 5G be used for AGVs?
Yes, where the selected 5G service provides a qualified radio path and the vehicle system tolerates the measured transition and recovery behaviour. Availability and performance must be validated at the actual site.
Q4. How do you test wireless coverage in a factory?
Survey the complete operating route at the final antenna position, then drive it repeatedly with representative machines, loads, obstructions and network traffic. Measure the application response as well as radio indicators.
Q5. When is the Robustel R5020-Lite Industrial 5G Router a good fit for AGVs and AMRs?
It fits mobile machines that need compact dual-SIM 5G connectivity, two Gigabit Ethernet ports and one configurable serial connection. The project should still validate power, mounting, antenna placement, handover and fleet-application recovery.
結論
The Robustel R5020-Lite Industrial 5G Router is best considered as the onboard connectivity layer for a vehicle that needs two Ethernet links, a selectable serial interface and dual-SIM cellular service. Its place is proven while the vehicle is moving with the final antenna, load and application—not beside the bench antenna.
Agree the interruption behaviour before the pilot starts: what the vehicle may continue, when it must stop, and who owns recovery. Then repeat the weakest route with several vehicles and ordinary production traffic. A model that passes that shared test is a far safer fleet standard than one selected from a peak 5G result.
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著者について
Robert Liao | Technical Support Engineer
Robert is an IoT Technical Support Engineer at Robustel, specializing in industrial networking and edge connectivity. A certified Networking Engineer, Robert focuses on the deployment and troubleshooting of large-scale IIoT infrastructures. His work centers on architecting reliable, scalable system performance for complex industrial applications, bridging the gap between field hardware and cloud-side data management.