Anchor Selection for Position Estimation Using Movable Region

The patent divides the estimation process into two distinct phases: a preparation phase where anchors are pre-selected based on terminal movement patterns, and an execution phase where position estimation is performed using only the pre-selected anchors. This segmentation allows the system to maintain high reliability through careful anchor selection while reducing estimation time by excluding irrelevant anchors from the calculation process.

The system performs preliminary anchor selection before the actual position estimation occurs. By analyzing terminal movement patterns and pre-determining which anchors are relevant to each terminal's movement region, the system prepares the optimal anchor set in advance. This preliminary action ensures that when estimation is needed, only the necessary anchors are used, thereby reducing time loss without compromising reliability.

The patent applies local quality by selecting different anchor sets for different terminal movement regions. Instead of using a uniform approach for all terminals, the system analyzes each terminal's specific movement pattern and selects anchors that are locally optimal for that terminal's region. This reduces processing complexity by focusing calculations on relevant local areas rather than processing all anchors system-wide.

The system uses partial action by selecting only the necessary subset of anchors for each terminal's estimation, rather than using all available anchors. By identifying and using only the anchors that contribute meaningfully to each terminal's position estimation based on movement patterns, the system achieves sufficient coverage with reduced processing complexity.