5G network performance greatly improved to help cloud VR landing
VR experience clarity and smoothness can be improved by improving the resolution and refresh rate of VR content/terminal, respectively, to improve the performance of the above at the same time also on the network bandwidth and latency also puts forward higher requirements. Weak interaction VR is mainly on the network bandwidth puts forward higher requirements; and strong interaction VR on the network bandwidth and delay at the same time put forward higher requirements.
Weakly interactive VR transmission program includes full-view transmission and FOV transmission, the former has greater bandwidth requirements, and strongly interactive VR only FOV transmission a transmission program. The FOV transmission scheme is to transmit the 360-degree surroundings to the terminal, and when the user's head rotates and needs to switch the screen, all the processing is done locally in the terminal. Using the full-view transmission program, as the viewer is watching, the actual view can only see the current part of the field of view, can not see the part of the accounted for the network bandwidth, but did not really use, thus causing a large waste of network resources, so the industry proposed a FOV (Field
of View, field of view angle) transmission program, only high-quality view of the region for transmission, does not involve the non-viewing angle region.
FOV (Field
of View) transmission scheme, only the high-quality viewing angle area will be transmitted, without involving non-viewing angle area.
The FOV transmission scheme currently includes two specific schemes, Pyramid Transmission and Tile Wise Transmission. According to Huawei's Cloud
VR Network Solution White Paper 2018, in the comfort experience stage VR, the full-view transmission bandwidth requirement for weakly interactive VR video applications reaches 140 Mbps, the FOV transmission bandwidth requirement reaches 75 Mbps, and the transmission bandwidth requirement for strongly interactive VR applications reaches 260 Mbps.
To reach the comfort experience stage
In order to achieve the comfortable experience stage of VR applications, the current 4G network is difficult to meet the above performance requirements. 5G commercialization in 2020 will significantly improve network performance, specifically in terms of transmission rate, latency, connection density and mobile speed.
The transmission rate of 5G network can reach 10Gbps, which is 100 times of 4G; the transmission delay can reach 1ms level, which is 1/50 of 4G; the connection density can reach 106/km2, which is 100 times of 4G; and the mobile speed can reach 500km/h, which is 1.5 times of 4G.
According to the "5G Cloud-based Virtual Reality White Paper" jointly released by Shanghai Bell and ICT and other organizations, the downlink bandwidth will be increased to 100Mbps-1Gbps starting from 5GR15, and the network latency will be reduced to 10ms, which will start to enter the next stage of VR experience. By then, VR equipment clarity, smoothness comprehensively improved, motion sickness eliminated, product weight reduction, cost reduction, the industry is expected to begin to enter the scale of application.
--For more data, please refer to China Virtual Reality (VR) Industry Development Prospect Forecast and Investment Strategy Planning Analysis Report released by Prospect Industry Research Institute.