Radio base station and power control method

• US 9,258,778 B2
• Filed: 08/13/2014
• Issued: 02/09/2016
• Est. Priority Date: 08/16/2013
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Takashima, Hiroaki
• Primary Examiner(s): NEFF, MICHAEL R
• Application Number:
  US14/459,043
• Publication Number:
  US 20150050962A1
• Time in Patent Office: 545 Days
• Field of Search: 455/561
• US Class Current: 1/1
• CPC Class Codes: H04W 52/0206 in access points, e.g. base stations access point devices per se H04W88/08
• CPC Class Codes: H04W 88/08 Access point devices
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A radio base station including: each of communication processing components being coupled to each of antennas forming each of sectors for a radio communication respectively, each of the communication processing components including communication processors being configured to perform each of functions for the radio communication and control each of radio resources for each of the functions respectively, and a control processor configured to select a first communication processing component and a second communication processing component respectively, select a first communication processor from the communication processors in the first communication processing component, transfer a radio resource of the radio resources that is controlled by the first communication processor to a second communication processor that is in the second communication processing component and performing a same function as the first communication processor, and upon transferring the radio resource of the radio resources, reduce a power of the first communication processor.

Claims

1. A radio base station comprising:

a plurality of communication processing components, each of the plurality of communication processing components being coupled to each of a plurality of antennas respectively, each of the plurality of antennas forming each of a plurality of sectors for a radio communication respectively, each of the plurality of communication processing components including a plurality of communication processors, each of the plurality of communication processors being configured to perform each of a plurality of functions for the radio communication and control each of a plurality of radio resources for each of the plurality of functions respectively; and

a control processor configured to

select a first communication processing component and a second communication processing component respectively from the plurality of communication processing components,

select a first communication processor from the plurality of communication processors in the first communication processing component,

transfer a radio resource of the plurality of radio resources that is controlled by the first communication processor to a second communication processor that is in the second communication processing component and performing a same function as the first communication processor, and

after transferring the radio resource of the plurality of radio resources, reduce a power of the first communication processor;

wherein the plurality of communication processors includes a scheduling processor and a baseband processor, the scheduling processor is configured to perform scheduling for the radio communication in a corresponding sector, the baseband processor is configured to perform baseband processing for the radio communication in the corresponding sector, and

the control processor is configured to select at least one of the scheduling processor and the baseband processor so as to be the first communication processor.

2. The radio base station according to claim 1, wherein

the control processor is configured to

select the first communication processing component based on each of a plurality of traffic amounts processed by each of the plurality of communication processing components, and

to transfer the radio resource controlled by the first communication processor to the second communication processor when the radio resource is less than an unused radio resource controlled by the second communication processor.

3. The radio base station according to claim 2, wherein

each of the plurality of traffic amounts is a usage rate of a radio resource controlled by the scheduling processor.

4. The radio base station according to claim 2, wherein

each of the traffic amount is an amount of data in a buffer of each of the plurality of communication processing components.

5. The radio base station according to claim 1, wherein

the baseband processor includes a first layer processor and a second layer processor, the first layer processor is configured to perform a processing for a first layer of the radio communication, the second layer processor is configured to perform a processing for a second layer of the radio communication.

6. The radio base station according to claim 1, wherein

the control processor is configured

to stop transmitting a command for adjusting a transmission timing, to a sector corresponding to the first communication processing component for a period, and

to transfer the radio resource controlled by the first communication processor to the second communication processor when the period elapses.

7. The radio base station according to claim 1, wherein the transferred radio resource includes a resource of physical uplink control channel (PUCCH) and a resource of sounding reference signal (SRS).

8. The radio base station according to claim 1, wherein

each of the plurality of communication processors comprises a circuit board, a device or a processor core.

9. The radio base station according to claim 1, wherein

the control processor is configured to select less than all of the plurality of communication processors in the first communication processing component to be the first communication processor.

10. A power control method at a radio base station, the power control method comprising:

selecting a first communication processing component and a second communication processing component respectively from a plurality of communication processing components in the radio base station, each of the plurality of communication processing components being coupled to each of plurality of antennas respectively, each of the plurality of antennas forming each of a plurality of sectors for a radio communication respectively, each of the plurality of communication processing components including a plurality of communication processors, each of the plurality of communication processors being configured to perform each of a plurality of functions for the radio communication and control each of a plurality of radio resources for each of the plurality of functions respectively;

selecting a first communication processor from the plurality of communication processors in the first communication processing component;

transferring a radio resource of the plurality of radio resources that is controlled by the first communication processor to a second communication processor that is in the second communication processing component and performing a same function as the first communication processor; and

after transferring the radio resource of the plurality of radio resources, reduce a power of the first communication processor;

wherein the plurality of communication processors includes a scheduling processor and a baseband processor, the scheduling processor is configured to perform scheduling for the radio communication in a corresponding sector, the baseband processor is configured to perform baseband processing for the radio communication in the corresponding sector, and

selecting at least one of the scheduling processor and the baseband processor so as to be the first communication processor.