Huawei’s wireless backhaul solution for rail transportation supports applications such as video surveillance, train-to-ground communication, and infotainment systems. However, it is explicitly stated in Huawei documentation that this solution is not designed for or certified to carry the safety-critical train signaling systems, which typically require dedicated and highly regulated communication networks.
Options A, C, and D are true and backed by Huawei’s performance claims:
Handover delay can reach as low as 30 ms using dual-link active-active design.
Video backhaul is maintained even at speeds up to 160 km/h.
[Reference:, Huawei HCSA-IP Network V4.0 Study Guide, Chapter: “Huawei Campus WLAN Products and Solutions”, Section: “Industry WLAN Applications”, Huawei Rail Wireless Backhaul Solution White Paper, ════════════════════════════════════════════]
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