Figure 4.2.3-1 shows a reference architecture for Ranging based services and Sidelink Positioning for Inter-PLMN non-roaming operation. In this case, the UE A and UE B have subscriptions from different PLMNs, i.e. PLMN-A and PLMN-B respectively.
Figure 4.2.3-2 shows a reference architecture for Ranging based services and Sidelink Positioning for Inter-PLMN roaming operation. In this case, the UE A and UE B have subscriptions from different PLMNs, i.e. PLMN-A and PLMN-B respectively. UE A is roaming and registered to PLMN-C.