In 5G NSA: in 5G non-standalone, the UE utilizes one TX branch for each leg, one TX branch for 4G, and one TX branch for 5G.
Accordingly, Due to dual connectivity, UE will lose 3dB Tx power and 1 Tx transmission channel in NSA architecture.
In 5G SA: 5G SA Fully utilizes 2 UE TX for 5G, which will add up the power when using the two TX branches; accordingly, it offers better coverage by 3dB and better UL speed due to fully utilizing 2 UE TX for SA.
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