How does the UE know whether to use AckNack Bundling or Acknack multiplexing ?

Question

What is the difference between ACK/NACK bundling and multiplexing ? Why both are required?

Answer 1

I got the information. Just for reference,
it comes during RRC Connection setup : PhysicalConfigDedicated - PucchConfigDedicated.

In case of TDD, we have to indicate whether the Acknack feedback mode is multplexing or bundling,....

Comments

and by default it is ACK/NACK bundling feedback mode.

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thanks for more information.