Carrier Indicator Field Mapping for Multi-Cell Scheduling

The patent applies preliminary action by pre-configuring and signaling the CIF-to-cell mapping relationship to the UE before resource allocation occurs. The network node provides the mapping information in advance through RRC signaling or other control channels, so that when CIF values are used for cross-carrier scheduling, the UE already has the necessary mapping clarity to correctly interpret which cell each CIF value corresponds to. This resolves the contradiction by establishing the mapping relationship beforehand, enabling both multi-cell resource allocation and clear mapping interpretation.

The patent applies universality by designing a unified CIF-to-cell mapping configuration mechanism that serves multiple purposes: it enables cross-carrier scheduling, provides cell identification, and establishes resource allocation rules. The same mapping configuration is used across different cells and carriers, reducing the need for separate configuration procedures for each cell. This universal approach maintains scheduling flexibility while reducing overall configuration complexity by avoiding redundant cell-specific mapping setups.

The patent applies feedback by implementing confirmation mechanisms where the network node verifies that the UE has correctly received and interpreted the CIF-to-cell mapping configuration. Through acknowledgment signals and error detection mechanisms, the system ensures that the mapping relationship is accurately established before cross-carrier scheduling begins. This feedback loop maintains communication reliability while preserving system adaptability, as the confirmed mapping can be adjusted if scheduling scenarios change.