In the process of uplink and downlink decoupling, what determines whether the uplink uses high frequency or low frequency for signal transmission? (single-choice question, 2 points)

In the process of uplink and downlink decoupling, what determines whether the uplink uses high frequency or low frequency for signal transmission? (single-choice question, 2 points)
A . UE
B. gNodeB
C. AMF
D. UPF

Answer: B

Explanation:

In the process of uplink and downlink decoupling, whether the uplink uses high frequency or low frequency for signal transmission is determined by gNB.