Patent ID: 9258791
Filing Date: 2016-02-09
CPC Classification: H04W

Claim Text:
1. A method in a user equipment, UE, in a wireless communication network of performing power scaling on uplink transmission to a receiving radio access node, RAN, on a multi-radio access bearer, multi-RAB, wherein a Dedicated Physical Data Channel, DPDCH, and an enhanced Dedicated Physical Data Channel, E-DPDCH are configured for uplink transmission from the UE to the receiving RAN, comprising: determining a total UE transmit power exceeding a predetermined maximum power limit value; reducing total UE transmit power to the predetermined maximum power limit value by reducing one or more E-DPDCH gain factors by an equal scaling factor; determining a DPDCH transmission status; selecting a power scaling procedure based on the determined DPDCH transmission status; and applying the selected power scaling procedure on the uplink transmission; wherein a first power scaling procedure is selected when the DPDCH transmission status reveals that data is transmitted on the DPDCH, and a second power scaling procedure is selected when the step of determining DPDCH transmission status reveals that data is not transmitted on the DPDCH.