DRX Reference Signal Scheduling for Low-Power PDSCH Processing

The patent applies local quality by differentiating the treatment of reference signals based on their transmission timing relative to active time. Reference signals transmitted during active time are processed with standard quality and priority, while reference signals transmitted outside active time are processed with reduced quality or skipped entirely. This selective processing approach maintains communication performance during critical periods while reducing power consumption during inactive periods.

The patent utilizes periodic action by establishing a cyclic pattern where the UE alternates between processing reference signals during active time and skipping them during inactive time. The validity determination is performed periodically based on the active time boundaries, creating a rhythmic pattern of signal processing that aligns with the DRX cycle. This periodic selective processing enables the UE to maintain synchronization when needed while conserving energy during sleep periods.

The base station applies periodic action by transmitting reference signals at specific intervals aligned with the DRX active time pattern rather than continuously. The reference signal transmission is scheduled to coincide with UE active periods, creating a periodic transmission pattern that ensures synchronization accuracy when needed while allowing the network to enter low-power states during inactive periods.

The base station performs preliminary action by determining the validity of reference signals before transmission based on the UE's active time status. This advance determination allows the base station to prepare and transmit reference signals only when necessary, rather than continuously, thereby reducing network power consumption while maintaining synchronization accuracy through proactive timing alignment.

The patent applies the extraction principle by selectively removing unnecessary reference signal processing from the UE's operational workflow. Specifically, the UE extracts and processes only the essential reference signals transmitted during active time, while discarding or skipping processing of reference signals transmitted during inactive time. This extraction approach maintains necessary channel state information and mobility management capabilities while eliminating redundant processing that would consume time and energy.

The patent utilizes partial action by having the UE process only a subset of reference signals rather than all transmitted signals. During active time, the UE processes reference signals fully to maintain accurate channel state information. During inactive time, the UE skips processing entirely, accepting partial information coverage that is sufficient for maintaining mobility management while avoiding excessive processing that would waste time and energy.