Millimeter-wave communication with high throughput and high reliability is poised to be a gamechanger for V2X and VR applications.However, mmWave links are notorious for low reliability since theysuffer from frequent outages due to blockage and user mobility.We build mmReliable, a reliable mmWave system that implementsmulti-beamforming and user tracking to handle environmentalvulnerabilities. It creates constructive multi-beam patterns and optimizes their angle, phase, and amplitude to maximize the signalstrength at the receiver. Multi-beam links are reliable since theyare resilient to occasional blockages of few constituent beams compared to a single-beam system. We implement mmReliable on a 28GHz testbed with 400 MHz bandwidth, and a 64 element phasedarray supporting 5G NR waveforms. Rigorous indoor and outdoorexperiments demonstrate that mmReliable achieves close to 100%reliability providing 2.3x improvement in the throughput-reliabilityproduct than single-beam systems.
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发表于 2024-1-30 00:53:30
