In an aspect of the disclosure, a method, a computer readable medium, and an apparatus
are provided. The appa ratus may be a UE. The UE receives a radio bearer con figuration.
The UE also configures, based on the received radio bearer configuration, a radio bearer
including a first logical channel on a first carrier and a second logical channel on a second
carrier. The UE further determines whether to activate the radio bearer to perform
duplication. In response to a determination to activate the radio bearer to perform …