Is there no separate ACK/NACK for PUSCH?

Sakshama_Ghoslya · July 21, 2020, 3:00am

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

Manu_Saini · October 5, 2020, 9:37pm

Ack nack is used for PUSCH also.

Sakshama_Ghoslya · October 5, 2020, 9:37pm

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

Nitin · October 5, 2020, 9:38pm

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

samohiuddin · October 5, 2020, 9:52pm

I think this isn’t correct.

Sakshama_Ghoslya · October 5, 2020, 10:31pm

NDI serves as a HARQ acknowledgement.

Laxman · October 5, 2020, 10:31pm

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

samohiuddin · October 5, 2020, 10:41pm

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

mthakkar · October 6, 2020, 6:03am

NDI values toggle means there is new transmission.