COMMUNICATION CONTROL DEVICE, COMMUNICATION CONTROL METHOD, AND PROGRAM

• US 20140087720A1
• Filed: 05/30/2012
• Published: 03/27/2014
• Est. Priority Date: 07/07/2011
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Takano, Hiroaki
• Granted Patent: US 10,187,843 B2
• Time in Patent Office: Days
• US Class Current: 455/422.1
• CPC Class Codes: H04B 7/024 Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04B 7/2656 for structure of frame, burst
• CPC Class Codes: H04L 5/0035 Resource allocation in a cooperative multipoint environment
• CPC Class Codes: H04W 40/244 using a network of reference devices, e.g. beaconing

Abstract

Provided is a communication control device including a setting unit configured to set a timing at which a predetermined signal is transmitted only from one of a plurality of base stations having an identical cell ID, and a determining unit configured to, based on a reception result of a communication device at the timing, determine a combination of base stations from the plurality of base stations, the combination of the base stations being used for transmitting a signal to the communication device.

Claims

1. A communication control device comprising:

a setting unit configured to set a timing at which a predetermined signal is transmitted only from one of a plurality of base stations having an identical cell ID; and

a determining unit configured to, based on a reception result of a communication device at the timing, determine a combination of base stations from the plurality of base stations, the combination of the base stations being used for transmitting a signal to the communication device.

2. The communication control device according to claim 1,

wherein the setting unit sets a timing at which the predetermined signal is transmitted only from each of two or more base station groups, for each of the base station groups that compose the plurality of base stations, and

wherein the determining unit determines a base station that is used for transmitting a signal to the communication device, based on the reception result of the communication device at the timing set for each of the two or more base station groups.

3. The communication control device according to claim 2,

wherein the setting unit selects at least any one of the base station groups based on the reception result of the communication device at the timing set for each of the two or more base station groups, and sets a timing at which a predetermined signal is transmitted only from one, or two or more base stations that compose the selected base station group.

4. The communication control device according to claim 1,

wherein the timing corresponds to a subframe that composes a radio frame, and

wherein the setting unit sets the subframe as an almost blank subframe (ABS), the subframe corresponding to the timing of a base station that is not included in a base station group for which transmission is set at the timing.

5. The communication control device according to claim 4,

wherein the setting unit further sets the subframe as an MBSFN subframe, the subframe corresponding to the timing of the base station that is not included in the base station group for which the transmission is set at the timing.

6. The communication control device according to claim 1,

wherein the predetermined signal is a reference signal in a data region in which a physical down link shared channel (PDSCH) is transmitted.

7. The communication control device according to claim 2,

wherein the setting unit sets different radio frames as the timing, the different radio frames being used for transmitting the predetermined signal to each of the two or more base station groups.

8. The communication control device according to claim 7,

wherein the predetermined signal is a channel state information reference signal (CSI-RS).

9. The communication control device according to claim 8,

wherein the setting unit stops CSI-RS transmission at the timing of a base station that is not included in a base station group for which transmission is set at the timing.

10. The communication control device according to claim 1,

wherein the plurality of base stations include a base station of a remote radio hed (RRH).

11. The communication control device according to claim 10,

wherein the communication control device is a macrocell base station, and

wherein the macrocell base station supplies a signal that is transmitted to the communication device to the RRH that composes the combination of the base stations determined by the determining unit.

12. The communication control device according to claim 1,

wherein at least any one of the plurality of base stations notifies the communication device of information indicating the timing beforehand.

13. A communication control method comprising:

setting a timing at which a predetermined signal is transmitted only from one of a plurality of base stations having an identical cell ID; and

determining, based on a reception result of a communication device at the timing, a combination of base stations from the plurality of base stations, the combination of the base stations being used for transmitting a signal to the communication device.

14. A program for causing a computer to function as:

a setting unit configured to set a timing at which a predetermined signal is transmitted only from one of a plurality of base stations having an identical cell ID; and

a determining unit configured to, based on a reception result of a communication device at the timing, determine a combination of base stations from the plurality of base stations, the combination of the base stations being used for transmitting a signal to the communication device.

15. A communication control device comprising:

a setting unit configured to set a timing at which a predetermined signal is transmitted only from one of a plurality of base stations having an identical cell ID; and

an acquisition unit configured to acquire a detection result obtained by a communication device detecting an interference component at the timing.