Satellite Link Capability Signaling for Phase-Continuous Channel Estimation

The network device performs preliminary configuration by indicating a time domain window (TDW) to the terminal device before TA adjustment occurs. This preliminary action allows the terminal device to maintain phase continuity within the indicated TDW during TA adjustment, preventing disruption to joint channel estimation performance while still enabling high mobility adaptability through TA adjustment.

The patent implements dynamic adaptation by allowing the network device to flexibly indicate different time domain windows based on terminal mobility conditions. The TDW configuration dynamically adjusts to balance between maintaining phase continuity for channel estimation and allowing TA adjustment for mobility adaptation, resolving the contradiction between these two requirements.

The network device provides preliminary indication of the time domain window before TA adjustment is executed. This allows the terminal device to prepare for TA adjustment while maintaining phase continuity within the specified window, ensuring both time synchronization through TA adjustment and channel estimation accuracy through phase-continuous signals.

The patent applies local quality by restricting phase continuity requirements to specific time domains (within the indicated TDW) rather than requiring global phase continuity. This allows TA adjustment to occur locally in time without affecting overall channel estimation accuracy, as the phase continuity is maintained within the locally defined window where channel estimation is performed.