CPC H04W 52/346 (2013.01) [H04L 5/0007 (2013.01); H04W 52/367 (2013.01); H04W 72/044 (2013.01); H04W 72/12 (2013.01); H04W 88/06 (2013.01)] | 18 Claims |
1. A method in a network entity for a first radio access technology (RAT) in a communication network for determining a per carrier additional maximum power reduction (MPR) for a first RAT carrier of a dual carrier operation at a user equipment (UE), where dual carriers are adjacent uplink carriers corresponding to multiple different RATs, and where the network entity does not have knowledge of an uplink allocation for a second RAT carrier associated with the dual carrier operation, which is different from the first RAT carrier, the method comprising:
determining a per carrier allowed additional MPR for a worst case allocation for the first RAT carrier without knowledge of the uplink allocation for the second RAT carrier, the determination for the first RAT carrier including:
determining a total power reduction allowed for meeting emission requirements for each of one or more respective allocation ratios,
determining a fraction of a total power allocated to the first RAT carrier for each of one or more respective allocation ratios,
where for each of the one or more respective allocation ratios, determining a per carrier additional power reduction as a sum of the total power reduction allowed for meeting the emission requirements and a determined amount of reduction, based upon the determined fraction of the total power allocated to the first RAT carrier,
comparing the per carrier additional power reduction of the one or more respective allocations, and
selecting the per carrier additional power reduction of the one or more respective allocation ratios, which has a highest value, as the worst case per carrier additional MPR for the first RAT carrier; and
using the per carrier additional MPR corresponding to the worst case per carrier additional MPR in connection with an assignment of an allocation and a modulation and coding scheme (MCS) to the UE to be used when transmitting on the first RAT carrier.
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