Dear Experts.
For NR (NSA) carrier aggression between FDD and TDD, is there any requirement to keep the FDD cells as PCC or in higher priority regardless of Bandwidth?
I think there is no strict requirement that FDD must be used as the PCC.
However, FDD bands are often preferred as PCC because they usually provide more consistent coverage and lower latency due to their continuous transmission (in contrast to TDD, which has to switch between transmit and receive modes.
The decision is usually based on a combination of factors including the network performance, coverage, interference considerations, and device capabilities. Operators may choose to use FDD as PCC for stability and coverage, but this is not mandated by the standard.
I remember in E// there are few parameters where yiu set CA Priority and Proportion for sCell Candidates. Distributed the traffic based on Ratio and Load.