Spatial Filter Synchronization Signal Transmission for Interference Reduction

The patent applies local quality by transmitting SLSS with different spatial characteristics in different directions. Specifically, it uses a first spatial filter (wide beam) in a first direction toward coverage extension areas, and a second spatial filter (narrow beam) in a second direction toward existing coverage areas. This directional differentiation allows the system to extend coverage where needed while minimizing interference in areas already covered.

The patent segments the transmission space into different directions and applies different spatial filters accordingly. It divides the coverage area into at least two distinct directions: a first direction for coverage extension and a second direction for existing coverage. This segmentation enables selective transmission strategies for different spatial regions, optimizing both coverage and interference management.

The patent improves transmission efficiency by applying local quality principles - using direction-specific spatial filters that match the actual coverage needs of each direction. Instead of uniform omnidirectional transmission, it tailors the spatial characteristics (beam width, direction) to the specific requirements of each transmission direction, reducing wasted energy in already-covered areas while effectively extending coverage in needed directions.

The patent implements dynamic transmission by adapting spatial filters based on directional requirements. The system dynamically selects between different spatial filters (first spatial filter for coverage extension, second spatial filter for existing coverage) depending on the transmission direction and coverage status, making the transmission strategy flexible and efficient rather than static and omnidirectional.