Coordinated TDD and SBFD Scheduling for Cross-Link Interference

The patent segments the frequency spectrum into different sub-bands and assigns them to different operational modes. Specifically, it divides the available spectrum into sub-band 1 for TDD operation and sub-band 2 for SBFD operation, allowing simultaneous operation while preventing interference through frequency separation. This segmentation enables the system to achieve high spectral efficiency by utilizing the full bandwidth while avoiding CLI by ensuring that TDD and SBFD operations occur in non-overlapping frequency regions.

The patent implements a universal scheduling framework that can handle both legacy TDD UEs and Rel-18 SBFD UEs through the same coordination mechanism. The gNBs exchange scheduling information that is applicable to both UE types, and the resource allocation methodology works universally across different operation modes. This multi-functional approach allows the system to maintain network compatibility while managing scheduling complexity through a unified procedure rather than separate mechanisms for each UE type.

The patent transitions from purely time-domain resource allocation to a two-dimensional time-frequency resource allocation approach. By introducing frequency domain segmentation with sub-bands, the system can allocate resources not only across different time slots but also across different frequency regions simultaneously. This dimensional expansion allows for more flexible resource distribution, enabling increased uplink capacity through SBFD operation in dedicated sub-bands while maintaining simple TDD operation in other sub-bands, thus overcoming the uplink capacity limitations of conventional TDD without sacrificing system simplicity.