(a) VR/AR. VR/AR is a product of the inter integration of new generation information technology such as near-eye reality, sensory interaction, rendering processing, network transmission and content production, etc. Under the new situation, high-quality VR/AR services have gradually increased the bandwidth and latency requirements, and the rate has gradually increased from 25 Mbps to 3 or 5 Gbps, and the latency has decreased from 3ms to less than 5ms. Gradually increase to 3, 5Gbps, delay from 3ms to less than 5ms.
(ii) Ultra HD video. As a new generation of innovative technology following the digitalization and HD media, UHD video is considered by the industry to be one of the earliest commercialized core scenarios for 5G networks.