๐ Explore the inner workings of HARQ-ACK Codebooks in 5G NR! This in-depth tutorial covers how HARQ feedback is multiplexed across transport blocks, carriers, and code block groups. Understand the differences between Semi-Static and Dynamic Codebooks, how the UE sends ACK/NACK to the gNB, and the role of DAI counters in reliable feedback delivery.
๐ What You'll Learn in This Video:
00:00 - Introduction to HARQ Feedback Multiplexing
06:52 - Semi-Static HARQ Codebook
10:44 - Dynamic HARQ Codebook
13:46 - Real Traces: UE Capability Exchange and gNB Configuration
๐ Topics Covered:
HARQ Feedback Multiplexing (Multiple TBs, Carriers, CBGs)
Semi-Static Codebook (Type 1): Fixed Size, Predictable Mapping
Dynamic Codebook (Type 2): Adaptive Size, Efficient Use of Uplink
Use of Configured DAI (cDAI) and Total DAI (tDAI)
5G NR traces and RRC signaling
๐ References:
3GPP Specifications
5G NR in Bullets
New Generation Wireless Access Technology Book
๐ก Perfect for:
Telecom engineers, 5G RAN optimizers
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๐ฌ Have questions about HARQ or codebook implementation? Drop them in the comments below!
#5G #HARQ #NR #RAN #5GNR #Telecom #Wireless #Codebook #HARQAcknowledgment #StaticCodebook #DynamicCodebook #cDAI #tDAI #PDSCH #gNB #UE #DAI #CBG #CarrierAggregation #NetworkOptimization
