Patent ID: 11924773
Assignee: PANTECH CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 5:
6. A user terminal for controlling uplink transmission power in a multiple component carrier system, comprising:
a memory; and
a processor operably coupled to the memory,
wherein the processor, when executing instructions stored in the memory, is configured to:
calculate a first transmission power determined for transmission of a sound reference signal (SRS) on a first serving cell;
calculate a second transmission power determined for transmission of a physical random access channel (PRACH) on a second serving cell;
calculate a power headroom based on both the first transmission power and the second transmission power; and
cause the user terminal to transmit, to the base station, the PRACH on the second serving cell without transmitting the SRS on the first serving cell, if the power headroom is less than a threshold power.