Is there no separate ACK/NACK for PUSCH?

Design and Planning
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1

Hi,
Is there no separate ACK/NACK for PUSCH?
Network toggles NDI?
Then how frequently network toggles NDI?

2

Ack nack is used for PUSCH also.

3

Does it goes through PDSCH?
Can you please provide little more detail…?

4

I don’t think so… it’s just NDI in 5G atleast.

5

I think this isn’t correct.

6

NDI serves as a HARQ acknowledgement.

7

Yes, for UL data, gNB acked them by toggling NDI bit of harq process used.
No explicit ACK used for UL data.

1 Like
8

Thanks @5GChacha. I will check QXDM logs and see.
Maybe QXDM takes ACK/NACK from NDI and prints acks or NACKS.

9

NDI values toggle means there is new transmission.