Reference Signal Beam Search in 5G mmWave Systems

The patent segments the beam search process into two distinct phases: initial beam acquisition using broad, coarse beams to establish connection, followed by beam refinement using narrower, more precise beams to optimize performance. This segmentation reduces the overall complexity by breaking down the challenging task of searching through many narrow mmWave beams into manageable stages, where the initial broad beams quickly identify promising directions and subsequent refinement focuses computational resources only on those directions.

The patent implements preliminary beam adaptation by continuously monitoring channel conditions and predicting best beam directions before the terminal actually moves to a new location. The system maintains a buffer of pre-computed beam configurations and switches to alternative beams proactively when degradation is detected, rather than waiting for complete loss of connection. This preliminary action reduces the time required for beam adaptation during actual movement.

The patent creates a universal beam management framework that handles multiple base stations and cells through a single integrated procedure. The same reference signal structures and measurement mechanisms are used across all cells, allowing the terminal to evaluate multiple base stations simultaneously using unified criteria. This multi-functional approach enables seamless handovers between cells while reducing processing overhead compared to maintaining separate beam management systems for each base station.