Beam-Specific Reference Power Headroom Reports in Unified TCI Framework

The patent applies local quality by transitioning from a single default reference PHR to multiple beam-specific reference PHRs. Each beam is associated with its own reference signal and power headroom calculation, allowing the system to account for local variations in pathloss and propagation conditions specific to each beam direction, thereby resolving the contradiction between framework compatibility and beam-specific accuracy.

The patent implements universality by establishing a unified framework where the same reference PHR calculation methodology is applied across all beams. The base station configures a set of reference signals, each associated with a beam, and the UE calculates reference PHRs using a consistent set of power control parameters for all beams. This standardized approach enables beam-specific accuracy while avoiding the complexity of separate power control mechanisms for each beam.

The patent applies preliminary action by having the base station configure the set of reference signals and their associations with beams in advance through RRC signaling. The UE stores this configuration and uses it to calculate beam-specific reference PHRs when needed. This pre-configuration approach ensures that reference PHRs are meaningful and beam-specific while simplifying the runtime processing, as the mapping between reference signals and beams is already established.