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5G Hardening Against Smart Jammer Attacks
How can 5G be made harder to jam? Aalborg University and Rohde & Schwarz present a new overlay approach that enables frequency hopping through standard 5G handover mechanisms — tested and validated using the CMX500 network emulator.
White Paper Overview
As 5G technology extends into mission-critical and defense applications, ensuring secure and resilient communications has become essential. This white paper introduces a novel overlay technique that makes 5G communications harder to detect and jam.
The approach leverages the handover mechanism—a feature already supported in 3GPP-compliant devices—to enable frequency hopping in 5G. By briefly occupying each carrier frequency before switching to another, the method increases resilience against jamming attempts. The paper evaluates this concept through extensive lab measurements using the Rohde & Schwarz CMX500 radio communication tester as a network emulator.
Experimental results demonstrate the trade-off between enhanced protection and temporary data interruptions affecting latency. The study also includes a real-world use case assessing Quality of Service (QoS) in a live video call under interference.
