Technical latency targets
5G introduces ultra-reliable low-latency communications (URLLC) that can reduce radio-interface delay to the sub-millisecond range in ideal conditions. Gerhard Fettweis Vodafone Chair Mobile Communications Systems Technische Universität Dresden argued for a 1 millisecond target for the Tactile Internet to enable real-time haptic and control applications, a benchmark that influenced 5G research and standardization. 3GPP defines URLLC features and mechanisms to achieve very low air-interface latency, while practical deployments typically deliver single-digit to low-double-digit millisecond latencies when combined with optimized cores and transport.
Relevance for drone control
Real-time drone control is sensitive to end-to-end latency rather than radio latency alone. For basic telemetry and supervisory commands, latencies under 100 milliseconds are often acceptable. For high-speed manual piloting, collision avoidance, or cooperative swarm maneuvers, operators and control loops benefit from latencies below 50 milliseconds. For teleoperation with haptic feedback or split-second coordinated flight, latencies approaching 1 millisecond significantly expand possible interaction fidelity and safety margins.
Causes of latency variance
Several factors determine whether 5G yields sub-10 ms end-to-end performance: the radio access configuration and spectrum band, transport network routing, core network placement, and whether compute is colocated at the network edge. Edge computing and network slicing reduce the propagation and processing delays that otherwise convert a low radio latency into a higher system-level delay. Geographic constraints, spectrum availability, and operator infrastructure investments produce territorial differences: urban testbeds can approach ideals, while rural or contested airspaces often experience higher, more variable delays.
Consequences for operations and policy
Lower latency expands operational capabilities—enabling safe beyond-visual-line-of-sight operations, more responsive BVLOS missions, and richer remote piloting—but also raises expectations and regulatory requirements for reliability and security. If latency exceeds the control-loop tolerance, consequences range from degraded maneuver precision to loss of control and increased collision risk. Human factors matter: operator training and interface design must account for residual delays and jitter to avoid workload increases and public safety concerns. Environmental and cultural considerations include integration with manned aviation, community acceptance of persistent low-altitude operations, and territory-specific rules that shape how low-latency networks are deployed and used.