QuestionQ32

5G Network Architecture and Key Technologies

In 5G NSA networking, which of the following RATs does the base station use when serving as the control-signaling anchor for access to the core network?

  • A GSM
  • B TD-SCDMA
  • C UMTS
  • D LTE
Explanation

5G NSA (EN-DC/Option 3) uses LTE as the control-plane anchor to the existing EPC, while NR supplies additional radio capacity. GSM, TD-SCDMA, and UMTS are not the NSA control-signaling anchor RAT.

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