TERMINAL, BASE STATION, AND COMMUNICATION METHOD

• US 20170006555A1
• Filed: 03/12/2015
• Published: 01/05/2017
• Est. Priority Date: 03/14/2014
• Status: Abandoned Application

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: SUZUKI, Shigeto, SAGA, Hiroyuki, KOBAYASHI, Hirokazu, ISHIKURA, Katsutoshi, TAKAGI, Yuhsuke, SATOH, Fumiyo
• Application Number:
  US15/125,632
• Publication Number:
  US 20170006555A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 43/16 Threshold monitoring
• CPC Class Codes: H04W 36/0069 in case of dual connectivity, e.g. decoupled uplink/downlink
• CPC Class Codes: H04W 36/00692 using simultaneous multiple data streams, e.g. cooperative multipoint [CoMP], carrier aggregation [CA] or multiple input multiple output [MIMO] allocation of physical resources in CoMP or in CA H04L5/0035
• CPC Class Codes: H04W 36/04 Reselecting a cell layer in multi-layered cells
• CPC Class Codes: H04W 36/30 by measured or perceived connection quality data
• CPC Class Codes: H04W 36/302 due to low signal strength
• CPC Class Codes: H04W 52/146 Uplink power control
• CPC Class Codes: H04W 52/26 using transmission rate or quality of service QoS [Quality of Service]
• CPC Class Codes: H04W 52/367 Power values between minimum and maximum limits, e.g. dynamic range

Abstract

A terminal includes: a transmission power setting unit configured to set transmission powers of two or a greater number of uplink component carriers connecting one or a greater number of base stations; a transmission power control unit configured to control the transmission powers based on information from the transmission power setting unit; and a transmission power summing unit configured to determine a sum of the transmission powers of the uplink component carriers.

Claims

1. A terminal comprising:

a transmission power setting unit configured to set transmission powers of two or a greater number of uplink component carriers connecting one or a greater number of base stations;

a transmission power control unit configured to control the transmission powers based on information from the transmission power setting unit;

a transmission power summing unit configured to determine a sum of the transmission powers of the uplink component carriers; and

a power-reduction processing unit configured to, in a case that the sum of the transmission powers exceeds a prescribed threshold, start processing for reducing a power consumption.

2. The terminal according to claim 1,

wherein the power-reduction processing unit is configured to reduce the power consumption by changing the amount of data transmitted using the component carriers or by executing a handover.

3. A terminal comprising:

a transmission power setting unit configured to set transmission powers of two or a greater number of uplink component carriers connecting one or a greater number of base stations;

a transmission power control unit configured to control the transmission powers based on information from the transmission power setting unit;

a transmission power summing unit configured to determine a sum of the transmission powers of the uplink component carriers;

a component carrier measurement unit configured to determine a sum of the reception qualities of radio signals received from the base station using two or a larger number of downlink component carriers;

an overall evaluation unit configured to determine an overall evaluation from the sum of the transmission powers and the sum of the reception qualities; and

a handover control unit configured to execute a handover in a case that the overall evaluation exceeds a prescribed threshold.

4. A base station that is connected to a terminal and also connected to another base station and that is connected to the terminal by a carrier aggregation connection, the base station comprising:

a determination unit configured to determine a sum of transmission powers of uplink component carriers of the terminal transmitted from the terminal exceeding a prescribed threshold; and

a handover control unit configured to cause the terminal to execute a handover in a case that the sum of the transmission powers exceeds the threshold.

5. A base station that is connected to a terminal and also connected to another base station and that is connected to the terminal by a carrier aggregation connection, the base station comprising:

a determination unit configured to determine an overall evaluation determined from a sum of transmission powers of uplink component carriers of the terminal transmitted from the terminal and a sum of reception qualities of receiving radio signals of the terminal exceeding a prescribed threshold; and

a handover control unit configured to cause for the terminal to execute a handover in a case that the overall evaluation exceeds the threshold.