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5G NR
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CORESET/PDCCH Calculator
Calculate 5G NR Control Resource Set (CORESET) capacity, CCE resources, and PDCCH configuration.
CORESET Capacity Calculator
Calculate total REGs, CCEs, and maximum PDCCHs for a CORESET
Frequency domain resources (6-276 RBs)
Time domain duration
Subcarrier spacing
3GPP Reference Information
Key Concepts
- CORESET
- Control Resource Set - a set of physical resources for PDCCH transmission
- PDCCH
- Physical Downlink Control Channel - carries DCI (Downlink Control Information)
- REG
- Resource Element Group - 1 RB (12 REs) in frequency × 1 OFDM symbol in time
- CCE
- Control Channel Element - composed of 6 REGs
- Aggregation Level
- Number of CCEs used for one PDCCH (1, 2, 4, 8, or 16). Higher AL = more robust
3GPP References
- TS 38.211 Section 7.3.2: PDCCH structure and resource mapping
- TS 38.213 Section 10: PDCCH reception procedures
- TS 38.213 Section 13: CORESET 0 configuration tables
- TS 38.214 Section 5: Downlink resource allocation
Key Formulas
- Total REGs: Number of RBs × Duration (symbols)
- Total CCEs: floor(Total REGs / 6)
- Bits per CCE: (6 REGs × 12 REs/REG - DMRS) × 2 bits/symbol (QPSK)
- DMRS Overhead: 3 REs per REG (25% overhead)