Question: In a 5G New Radio (NR) network, for a User Equipment (UE) to receive a Phase Tracking Reference Signal (PT-RS), which of the following conditions must be met regarding the frequency range?
Option 1: The UE must operate in Frequency Range 1.
Option 2: The UE can operate in any frequency range (e.g., FR1, FR2) without restrictions for PT-RS reception.
Option 3: The UE must operate in Frequency Range 2.
Option 4: The choice of frequency range depends on the specific band configuration set by the network operator.
Explanation: According to the specifications, Reception of PT-RS is only supported in Frequency Range 2. This implies that for a UE to successfully receive and utilize PT-RS for phase tracking and compensation (e.g., to mitigate phase noise effects), it must be operating within this specific frequency range. This highlights an important technical constraint in the design and operation of 5G NR systems, particularly affecting how UEs handle phase tracking in different frequency ranges.