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5G NR-DC/NRDC Introduction 1.0 #NR #5G

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Background:  NRDC comes under the umbrella of dual connectivity. Dual connectivity option was first introduced in LTE (Rel 12), where a UE can be connected to two eNB nodes. In rel-15 this feature was expanded to NR as well where connected nodes can be LTE-NR or NR-NR. 2 nodes are connected using non-ideal backhaul. Earlier this feature was called Multi RAT dual connectivity but now being called Mult Radio Dual Connectivity (MR-DC). MRDC broadly classified into two types:                  1. Core node EPC ·         ENDC (EUTRA-NR Dual connectivity)  2 .  Core node 5GC ·         NEDC (NR-EUTRA Dual connectivity)  ·         NGENDC (New radio EUTA-NR dual connectivity)  ·         NRDC (NR-NR dual connectivity Different Deployment options as per 3GPP:   NRDC (Ne...