name: DFI
full_form: Downlink Feedback Information
context: A UE can be configured a number of search space sets to monitor PDCCH for detecting a DCI format 0_1 with a DFI flag field and CRC scrambled with a CS-RNTI provided by cs-RNTI. The UE determines that the DCI format provides HARQ-ACK information for PUSCH transmissions based on when a DFI flag field value is set to '1', if a PUSCH transmission is configured by ConfiguredGrantConfig. The HARQ-ACK information corresponds to transport blocks in PUSCH transmissions for all HARQ processes for a serving cell of a PDCCH reception that provides DCI format 0_1 or, if DCI format 0_1 includes a carrier indicator field, for a serving cell indicated by a value of the carrier indicator field. For a PUSCH transmission configured by ConfiguredGrantConfig, HARQ-ACK information for a transport block of a corresponding HARQ process number is valid if a first symbol of the PDCCH reception is after a last symbol of the PUSCH transmission, or of any repetition of the PUSCH transmission, by a number of
description: Downlink Feedback Information (DFI) is a signaling data element used to convey HARQ-ACK (Hybrid Automatic Repeat Request Acknowledgement) information for PUSCH (Physical Uplink Shared Channel) transmissions. It facilitates communication between network components, enabling them to confirm the successful reception of downlink data.
explanation: DFI operates as a flag field within DCI format 0_1, directly involved in transmitting HARQ-ACK information, which is a core function of signaling protocols in telecommunications.
section_title: 10.5HARQ-ACK information for PUSCH transmissions
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