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5G Radio Access Network · Pro
DCI is the scheduling message transmitted on PDCCH that instructs UEs precisely which resources to use for data transmission and reception. NR defines several DCI format families, each dedicated to a specific scheduling function. Formats 0_0 and 0_1 schedule uplink transmissions on PUSCH, while formats 1_0 and 1_1 schedule downlink receptions on PDSCH. Additional formats serve specialized roles: Format 2_0 carries slot format indications for dynamic TDD, Format 2_1 delivers preemption indications for URLLC, and Format 2_2 provides power control commands. Every DCI message must match the exact…
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