Enabling High-Quality Untethered Virtual Reality

Simulation and measurement: Feasibility study of Tactile Internet applications for mmWave virtual reality

“…Unlike the above results, when the number of VR nodes increased to 20 or more, it was confirmed that the VR node cannot receive the 16K video service (refer to Figure B). Inspired by the research in , we achieved an average performance improvement approximately 12% when installing mirrors to address the blockage problem (in this simulation, we deployed four mirrors in the given topology). Notably, as the number of nodes increased, the performance increased dramatically when the mirrors were installed.…”

“…In , the authors obtained the attenuated SNR values of 48%, 90%, and 110% caused by the user's hand, head, and action, respectively (in decibel scale). To address this problem, it is possible to consider increasing the number of content servers or to relay signals by arranging a relay node in a place where a clear LOS is possible between the content server and the relay node.…”

“…In , the authors designed a programmable mmWave mirror for controlling the incidence and reflection angles. In their method, the SNR value between the content server and the HMD is monitored.…”

“…Figure A presents the data transfer rate of VR systems based on IEEE 802.11ad and in a blockage scenario. In this scenario, we assume that the VR node moves along a limited area (3 m × 3 m per the VR node), which causes the blockage problem whereby the LOS is not formed for a certain period of time.…”

“…Fortunately, existing techniques (eg, ) that address the deafness problem appear to address the problem of latency increase because of deafness. However, as shown in Figure , techniques for addressing blockages can be limiting in environments with a large number of nodes. Particularly, in an environment in which a large number of nodes are placed, the blocking phenomenon of the signal can be further intensified.…”