Cell Group PRS Sharing for Accurate TDOA Positioning

The patent segments cells into cell groups with shared attributes, where each cell group contains cells that have common characteristics such as location, timing advance values, or propagation characteristics. This segmentation allows the system to handle timing measurements more efficiently by treating cells within the same group uniformly, thereby improving measurement accuracy despite beamforming-induced variations.

The patent changes the parameter representation by introducing cell group attributes that aggregate timing and location information. Instead of treating each cell individually, the system uses group-level parameters (such as common timing advance values or reference locations) to compensate for propagation loss and timing delays, thereby maintaining measurement accuracy in high-frequency beamforming environments.

The patent merges location and timing information from multiple cells into unified cell group attributes. By combining these parameters at the group level rather than maintaining separate information for each cell, the system achieves accurate positioning while reducing the complexity of information management and signaling overhead.

The cell group attributes serve multiple functions simultaneously: they provide timing synchronization, location reference, and propagation loss compensation for all cells within the group. This multi-functionality eliminates the need for separate mechanisms for each purpose, thereby reducing overall system complexity while maintaining positioning accuracy.