Question: What condition must be met for a UE to consider another UE as a neighbor UE in discovery message when performing U2U Relay Discovery with Model A?
Option 1: The SL-RSRP of the UE is available and is above sl-RSRP-Thresh-DiscConfig, or the SD-RSRP of the UE is available and is above sd-RSRP-Thresh-DiscConfig.
Option 2: The SL-RSRP of the UE is available and is below sl-RSRP-Thresh-DiscConfig, or the SD-RSRP of the UE is available and is below sd-RSRP-Thresh-DiscConfig.
Option 3: The UE has a valid IP address and is connected to the same network as the potential neighbor UE.
Option 4: The UE has a valid IMSI and is registered on the same PLMN as the potential neighbor UE.
Explanation: According to the specifications, for a UE to consider another UE as a neighbor UE in discovery message when performing U2U Relay Discovery with Model A, either the SL-RSRP of the UE must be available and above sl-RSRP-Thresh-DiscConfig or the SD-RSRP of the UE must be available and above sd-RSRP-Thresh-DiscConfig. This ensures that the UE is within proximity range for sidelink communication.