COMMUNICATION CONTROL METHOD, BASE STATION, RADIO TERMINAL, AND PROCESSOR

• US 20140087738A1
• Filed: 05/24/2012
• Published: 03/27/2014
• Est. Priority Date: 05/27/2011
• Status: Active Grant

• Current Assignee: Kyocera Corporation
• Original Assignee: Kyocera Corporation
• Inventors: Iwabuchi, Akinori
• Granted Patent: US 9,402,211 B2
• Time in Patent Office: Days
• US Class Current: 455/437
• CPC Class Codes: H04W 24/04 Arrangements for maintaining operational condition
• CPC Class Codes: H04W 36/0011 for data sessions of end-to-end connection
• CPC Class Codes: H04W 36/165 for reducing network power consumption H04W36/18 - H04W36/22 take precedence
• CPC Class Codes: H04W 36/24 Reselection being triggered by specific parameters
• CPC Class Codes: H04W 52/0206 in access points, e.g. base stations access point devices per se H04W88/08
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A base station (10) comprises a battery (12) and is driven by power supplied from a power system or by power supplied by the battery (12). The base station (10) includes a radio communication unit (131) that sends information indicating the remaining power amount of the battery (12) to a radio terminal.

Claims

1. A communication control method in a base station that includes a battery and is driven by power supplied from a power system or power supplied from the battery, the method comprising:

a transmission step of transmitting information indicating a remaining power amount of the battery, to a radio terminal.

2. The communication control method according to claim 1, wherein

in the transmission step, the information indicating the remaining power amount of the battery is periodically transmitted.

3. The communication control method according to claim 1, wherein

the transmission step is executed based on a stoppage of the power supply from the power system.

4. The communication control method according to claim 3, further comprising:

a step of detecting the stoppage of the power supply from the power system, wherein

the transmission step includes a step of starting the transmission of the information indicating the remaining power amount of the battery, when the stoppage of the power supply from the power system is detected, or after a predetermined time elapses from the detection of the stoppage of the power supply from the power system.

5. The communication control method according to claim 3, further comprising:

a step of obtaining information indicating an estimated time when the power supply from the power system is stopped, wherein

the transmission step includes a step of starting the transmission of the information indicating the remaining power amount of the battery, a predetermine time prior to the estimated time when the power supply from the power system is stopped.

6. The communication control method according to claim 1, wherein

in the transmission step, the information indicating the remaining power amount of the battery is transmitted while being included in SIB (System Information Block) defined by a 3GPP standard.

7. A communication control method in a radio terminal able to communicate with a base station that includes a battery and is driven by power supplied from a power system or power supplied from the battery, the communication control method comprising:

a step of receiving information indicating a remaining power amount of the battery, from the base station; and

a step of using the information indicating the remaining power amount of the battery in cell reselection.

8. A base station that includes a battery and is driven by power supplied from a power system or power supplied from the battery, the base station comprising:

a transmission unit that transmits information indicating a remaining power amount of the battery, to a radio terminal.

9. A radio terminal able to communicate with a base station that includes a battery and is driven by power supplied from a power system or power supplied from the battery, the radio terminal comprising:

a reception unit that receives information indicating a remaining power amount of the battery, from the base station, wherein

the information indicating the remaining power amount of the battery is used in cell reselection.

10. A processor provided in a radio terminal able to communicate with a base station, wherein

the base station includes a battery and is driven by power supplied from a power system or power supplied from the battery, and

the processor is configured to perform

a process for receiving, by the radio terminal, information indicating a remaining power amount of the battery from the base station, and

a process for using, by the radio terminal, the information indicating a remaining power amount of the battery in cell reselection.