5.1.4a Power allocation for dual active protocol stack

36.2133GPPEvolved Universal Terrestrial Radio Access (E-UTRA)Physical layer proceduresRelease 17TS

If a UE indicates a capability for dual active protocol stack based handover (DAPS HO), the UE can be provided with a source MCG and a target MCG.

If a UE is configured with a target MCG and a source MCG in different bands, and the UE is configured with DAPS-PowerCoordinationInfo, the UE shall apply the procedures described in clause 5.1.4 with the following modifications

– Consider the target MCG as the MCG and the source MCG as the SCG.

– Replace p-MeNB and p-SeNB by p-DAPS-Target and p-DAPS-Source, respectively.

– Replace "(a)synchronous dual connectivity" by "(a)synchronous DAPS".

– "Dual connectivity power control mode" is replaced by "DAPS power control mode", and is given by higher layer parameter uplinkPowerSharingDAPS-Mode.

– The UE assumes only Pcell exists in each MCG.

If UE does not indicate a capability for power sharing between source and target MCGs in DAPS handover, or if a UE is configured with a target MCG and a source MCG in the same band, the UE does not expect the transmissions on the target and source cell to overlap in time domain.