Terminal-Specific Sidelink Sequence Generation for Interference Randomization

The patent applies local quality by making the scrambling code sequence terminal-specific while keeping the synchronization signal sequence common. Each terminal uses its own identifier (such as terminal ID or C-RNTI) to generate a unique scrambling code sequence for the physical sidelink broadcast channel (PSBCH), while all terminals can use the same synchronization signal sequence. This allows terminals to share common synchronization information while maintaining individualized scrambling to randomize interference and enable accurate detection and decoding at the receiver side.

The patent changes the parameter used for scrambling code generation from a common source to a terminal-specific identifier. Instead of using the same scrambling code initialization parameters for all terminals, the system incorporates terminal-specific parameters (such as terminal ID, C-RNTI, or other unique identifiers) into the scrambling code generation process. This parameter change ensures that each terminal's PSBCH is scrambled with a unique sequence, allowing receiving terminals to distinguish signals from different transmitters and significantly reducing false alarm probability while maintaining manageable complexity through standardized generation algorithms.