5G • RAN
NR-DC
NR-NR Dual Connectivity
Dual connectivity where both Master Node and Secondary Node are 5G gNodeBs operating in different bands.
Technical Explanation
In NR-DC, the UE connects simultaneously to two independent 5G gNodeBs connected to the 5G Core. A typical deployment pairs a low/mid-band sub-6 GHz gNodeB as Master Node (ensuring wide-area coverage and control reliability) with a high-capacity millimeter-wave gNodeB as Secondary Node (delivering multi-gigabit throughput).
Key Functions
- Connects UE simultaneously to two separate 5G gNodeBs in different bands
- Combines mid-band (sub-6 GHz) macro coverage with mmWave small cell capacity
- Executes packet splitting and carrier aggregation natively across 5G nodes
Specifications
3GPP TS 38.300
Interfaces
N2N3Xn
Related 5G Concepts
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