Millimeter Wave and Free-Space-Optics for Future Dual-Connectivity 6DOF Mobile Multi-User VR Streaming

Dual-connectivity streaming is a key enabler of next-generation six Degrees Of Freedom (6DOF) Virtual Reality (VR) scene immersion. Indeed, using conventional sub-6 GHz WiFi only allows to reliably stream low-quality baseline representation the VR content, while emerging high-frequency communication technologies allow in parallel high-quality user viewport-specific enhancement that synergistically integrates with deliver We investigate holistically as part an entire future system two such candidate technologies, Free Space Optics (FSO) and millimeter-Wave (mmWave), benefit from large available spectrum unprecedented data rates. analytically characterize components envisioned dual-connectivity 6DOF addition edge computing scalable 360° video tiling, we formulate optimization problem maximize immersion fidelity delivered by system, given mmWave/FSO link rates, capabilities server users’ headsets. This mixed integer programming high complexity geometric framework compute optimal solution at low complexity. carry out simulation experiments assess performance proposed actual navigation traces multiple mobile users collected. Our results demonstrate our considerably advances traditional state art enables 8K-120 frames-per-second (fps) content fidelity.