IP Library Granted Patent US 9,078,217
Granted Patent B2
US 9,078,217 · App. 13/266,389 · Granted Jul 7, 2015

User equipment, base station device, and communication control method

Inventor: Hiroyuki Ishii (Yokohama, JP)
Assignee: NTT DOCOMO, INC.
H04W52/18H04W52/146H04W52/367H04W52/42H04W52/34
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Quick Facts
Patent No.
US 9,078,217
App. No.
13/266,389
Granted
Jul 7, 2015
Kind
B2
Abstract

A radio base station including a user equipment configured to execute radio communication with a base station device in a mobile communication system. The user equipment includes a control signal reception unit configured to receive a control signal providing instructions to transmit an uplink signal and an uplink signal transmission unit configured to transmit the uplink signal to the base station device on a basis of the control signal, the uplink signal transmission unit is configured to set a maximum value of transmission power of the uplink signal to be smaller than rated power defined by the mobile communication system on a basis of at least one of a parameter notified by the control signal and a number of transmission antennas or transmitters used for transmission of an uplink signal.

Claims (8)

1. A user equipment configured to execute multicarrier communication over two or more component carriers in uplink with a base station device in a mobile communication system, the user equipment comprising:

a control signal reception unit configured to receive a control signal providing instructions to transmit an uplink signal based on the two or more component carriers in the uplink; and

an uplink signal transmission unit configured to transmit the uplink signal to the base station device on a basis of the control signal, wherein the control signal includes at least one of a number of resource blocks of the uplink signal, a modulation method of the uplink signal, and transmission frequency of the uplink signal, wherein

the uplink signal transmission unit is configured to set a maximum value of transmission power of the uplink signal to be smaller than rated power defined by the mobile communication system on a basis of a modulation method of the uplink signal, the number of resource blocks of the uplink signal, and frequency intervals among a plurality of frequency carriers of the uplink signal.

2. A communication control method for executing multicarrier communication over a plurality of component carriers in an uplink between a user equipment and a base station device in a mobile communication system, the mobile communication method comprising:

a step A of receiving a control signal providing instructions to transmit an uplink signal based on the plurality of component carriers in the uplink; and

a step B of transmitting the uplink signal to the base station device on a basis of the control signal, wherein the control signal includes at least one of a number of resource blocks of the uplink signal, a modulation method of the uplink signal, and transmission frequency of the uplink signal, wherein

in the step B, a maximum value of transmission power of the uplink signal is set to be smaller than rated power defined by the mobile communication system on a basis of a modulation method of the uplink signal, the number of resource blocks of the uplink signal, and frequency intervals among a plurality of frequency carriers of the uplink signal.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 27, 2011
From: ISHII, HIROYUKI
To: NTT DOCOMO, INC.
Reel/Frame 027131/0660 →
Priority Claims (2)
JP 2009-108562 · Apr 27, 2009 · national
JP 2010-030749 · Feb 15, 2010 · national
Continuity (1)
Related Publication 20120044898A1 · Feb 23, 2012