+We identify individual UEs across multiple EN-DC sessions by the s1-UL-GTPtunnelEndpoint IE in 3GPP X2AP: SgNB Addition Request message, as long as they remain connected to the same eNB.
+We identify UE groups based on (i) QCI, (ii) E-RAB-ID, (iii) (QCI, ARP) value pair, etc.
+We identify NR cell based on the NR-PCI or the Physical Cell Identity
+We identify the NR gNB based on the gNB ID Information Element (IE) received in the RMR X2AP streaming header
+
+The key 3GPP EN-DC X2AP procedures that we handle in the MC xApp include:
+- SgNB Addition
+- SgNB Release
+- SgNB Modification
+- RRC Transfer
+- Secondary RAT Data Usage Report