公开(公告)号：US11076359B2

公开(公告)日：2021-07-27

申请号：US16607169

申请日：2017-06-02

Applicant: Apple Inc.

Inventor： Zhu Ji ,  Ruirui Zong ,  Wenshan Pan ,  Lei Li ,  Yaoqi Yan ,  Elliot S. Briggs

IPC: H04W52/20 ,  H04W52/14 ,  H04L1/20 ,  H04W52/36 ,  H04W72/04 ,  H04W52/34

Abstract: A device, system, and method adaptively adjusts uplink power transmission to component carriers in carrier aggregation. The method is performed at a user equipment configured with a carrier aggregation functionality including a primary component carrier (PCC) and a secondary component carrier (SCC), the UE using a first transmit power for an uplink transmission on the PCC and using a second transmit power for the uplink transmission on the SCC. The method includes determining whether a total transmit power including the first and second transmit powers for the uplink transmission exceeds a predetermined threshold. The method includes, when the total transmit power exceeds the predetermined threshold, adjusting the first transmit power based on a connectivity parameter for the PCC. The method includes adjusting the second transmit power based on the adjusting of the first transmit power.