The main difference of NSA (Non-Standalone Architecture) and SA (Standalone Architecture) is that NSA anchors the control signaling of 5G Radio Networks to the 4G Core, while the SA scheme connects the 5G Radio directly to the 5G core network, and the control signaling does not depend on the 4G network at all.17 Ara 2020
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NSA (Non-Standalone) refers to the joint networking of 5G and 4G LTE , which means that 5G networks are deployed on the basis of existing 4G equipment. In the 5G NSA networking mode, operators can share 4G and 5G core networks.4 Ağu 2021
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