NR-V2X Congestion Control with SCS-Based PSSCH Power Timing

The patent implements preliminary action by requiring the UE to measure the CBR in advance in a first slot before determining the transmission power for the second slot. The time relationship is pre-defined based on subcarrier spacing, ensuring that the CBR measurement is performed at an appropriate time prior to transmission. This preliminary measurement approach allows the UE to have accurate power determination information ready before actual transmission, improving both accuracy and efficiency.

The patent uses parameter changes by linking the CBR measurement timing and power determination timing through subcarrier spacing configuration. Different SCS values create different time offsets between measurement and transmission, allowing the system to optimize the measurement window duration and timing based on the specific service requirements. This parameter-based timing relationship ensures that power determination accuracy is maintained while adapting to different transmission scenarios.

The patent applies dynamics by making the time offset between CBR measurement and power determination flexible rather than fixed. The offset is dynamically determined based on the subcarrier spacing configuration, allowing shorter delays for high SCS scenarios (faster slot duration) and longer delays for low SCS scenarios. This dynamic timing adjustment optimizes the balance between reliable congestion control (needing measurement time) and rapid power adaptation (needing minimal delay).

The patent uses parameter changes to adjust the measurement-to-transmission time interval based on subcarrier spacing. By changing the SCS parameter, the system automatically adjusts the timing relationship, allowing the congestion control mechanism to adapt to different service requirements. This parameter-based approach reduces unnecessary time delays while maintaining reliable congestion control through appropriate measurement windows.