5G • RAN
NE-DC
NR-E-UTRA Dual Connectivity (Option 4)
5G deployment architecture where 5G gNodeB is Master Node and LTE eNodeB is Secondary Node connected to 5GC.
Technical Explanation
In 3GPP Architecture Option 4 (NE-DC), the standalone 5G gNodeB serves as Master Node connected directly to the 5G Core (5GC) over N2/N3 interfaces. Legacy 4G LTE cells are connected to the gNodeB as Secondary Nodes to provide supplementary carrier aggregation and throughput boost.
Key Functions
- Operates with 5G gNodeB as Master Node connected to 5G Core (5GC)
- Utilizes legacy 4G LTE cells as supplementary Secondary Nodes
- Represents mature network evolution step for Standalone 5G networks
Specifications
3GPP TS 38.300
Interfaces
N2N3Xn
Related 5G Concepts
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