# US 10,455,500 B2 · User terminal, communication control apparatus, and processor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,455,500 B2 - Document ID: US10455500B2 - Status: Granted - Kind: B2 - Application number: 14/915,089 - Filed: 2014-08-26 - Published: 2016-07-28 - Granted: 2019-10-22 - Earliest claimed: 2013-08-30 - Assignees: KYOCERA Corporation - Applicants: Kyocera Corporation - Inventors: Masato Fujishiro; Chiharu Yamazaki - Web page: https://patentgrep.com/patent/US10455500B2 ## CPC - H04W 52/0212: {managed by the network, e.g. network or access point is leader and terminal is follower} - H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information} - H04W 52/34: TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading - H04W 52/38: TPC being performed in particular situations - H04W 72/1215: {for collaboration of different radio technologies} - H04L 5/006: {Quality of the received signal, e.g. BER, SNR, water filling} - H04L 5/0062: {Avoidance of ingress interference, e.g. ham radio channels} - H04W 52/146: {Uplink power control} - H04W 88/12: Access point controller devices - Y02D 30/70: in wireless communication networks - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract In a mobile communication system, UE 100-1 that transmits a radio signal to a transmission target receives a plurality of TPC parameters from eNB 200 and control a transmission power of the radio signal, on the basis of the plurality of TPC parameters. The plurality of TPC parameters include: a first TPC parameter (TPC parameter A, B) applied to a single transmission in which one radio signal is singly transmitted; and a second TPC parameter (TPC parameter C) applied to a simultaneous transmission in which a plurality of radio signals (radio signal SG1, SG2) different in frequency are simultaneously transmitted to a plurality of transmission targets. ## Claims ### Claim 1 A user terminal comprising: a receiver configured to receive, from a first base station, a first transmission power control parameter and a second transmission power control parameter, wherein the first transmission power control parameter is for a single transmission in which radio signals are transmitted only to the first base station, and the second transmission power control parameter is for a dual simultaneous transmission in which radio signals are simultaneously transmitted to both the first base station and a second base station; and a controller configured to: determine first transmission power for the single transmission based on the first transmission power control parameter, the first transmission power being used for transmitting radio signals to the first base station; and determine second transmission power and third transmission power for the dual simultaneous transmission based on the second transmission power control parameter, the second transmission power being used for transmitting a radio signal to the first base station, and the third transmission power being used for transmitting a radio signal to the second base station. ### Claim 2 (depends on 1) The user terminal according to claim 1, wherein the controller is configured to transmit capability information to the first base station, and the capability information indicates that the user terminal supports the dual simultaneous transmission. ### Claim 3 A first base station comprising: a transmitter configured to transmit a first transmission power control parameter and a second transmission power control parameter, wherein the first transmission power control parameter is for a single transmission in which radio signals are transmitted from a user terminal only to the first base station, and the second transmission power control parameter is for a dual simultaneous transmission in which radio signals are simultaneously transmitted from the user terminal to both the first base station and a second base station, wherein the first transmission power control parameter is used by the user terminal to determine first transmission power for the single transmission, the first transmission power being used for transmitting radio signals to the first base station, and the second transmission power control parameter is used by the user terminal to determine second transmission power and third transmission power for the dual simultaneous transmission, the second transmission power being used for transmitting a radio signal to the first base station, and the third transmission power being used for transmitting a radio signal to the second base station. ### Claim 4 A processor for a user terminal and a memory that stores a program to be executed by the processor, wherein the processor executes: a process of receiving, from a first base station, a first transmission power control parameter and a second transmission power control parameter, wherein the first transmission power control parameter is for a single transmission in which radio signals are transmitted only to the first base station, and the second transmission power control parameter is for a dual simultaneous transmission in which radio signals are simultaneously transmitted to both the first base station and a second base station; and the processor further executes: a process of determining first transmission power for the single transmission based on the first transmission power control parameter, the first transmission power being used for transmitting radio signals to the first base station; and a process of determining second transmission power and third transmission power for the dual simultaneous transmission based on the second transmission power control parameter, the second transmission power being used for transmitting a radio signal to the first base station, and the third transmission power being used for transmitting a radio signal to the second base station. ### Claim 5 (depends on 3) The first base station according to claim 3, wherein capability information is transmitted to the first base station by the user terminal, and the capability information indicates that the user terminal supports the dual simultaneous transmission. ### Claim 6 (depends on 4) The processor according to claim 4, wherein the processor further executes a process of transmitting capability information to the first base station, and the capability information indicates that the user terminal supports the dual simultaneous transmission.