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Session 4- 5G E2E User Plane Explained: NR HARQ Deep Dive

Mohamed ELAdawi

13 Feb 2025

Everything you need to know about 5G HARQ. This video covers the following key topics:

HARQ Feedback Loop- Typical Pipeline
HARQ Retransmission- Soft Combining Overview
HARQ Retransmission- Chase Combining
HARQ Retransmission- Incremental redundancy
HARQ Process Stop-AND-Wait
HARQ Retransmission- Code Block Group based
Timing of Uplink HARQ Acknowledgments
Multiplexing of HARQ acknowledgments types
HARQ Features- Semi-Static Codebook
HARQ Features- Dynamic Codebook
HARQ Features- Spatial Bundling
4G Vs. 5G HARQ

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5G HARQ Explained: Soft Combining, HARQ Processes, ACK/NACK Timing, Codebook Types, Spatial Bundling, and 4G vs 5G Differences (Article)

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