Communication control device, communication control method, and program

• US 10,187,843 B2
• Filed: 05/30/2012
• Issued: 01/22/2019
• Est. Priority Date: 07/07/2011
• Status: Expired due to Fees

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Takano, Hiroaki
• Primary Examiner(s): Vu, Quoc Thai N
• Application Number:
  US14/122,030
• Publication Number:
  US 20140087720A1
• Time in Patent Office: 2,428 Days
• Field of Search: 4554352, 455443, 455444, 455447-451
• 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:

circuitry configured to

send a setting position to a communication device, the setting position corresponding to a location to measure a reference signal received power;

set a timing for fewer than all of a plurality of base stations having an identical cell ID, at which a predetermined signal is respectively transmitted only from said fewer than all of the plurality of base stations having the identical cell ID, said fewer than all of the plurality of base stations being all of the plurality of base stations for which the setting position is not set; and

based on a reception result of the 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 circuitry is configured to

set a timing for each of two or more base station groups, at which the predetermined signal is respectively transmitted only from each of the two or more base station groups the two or more base station groups that composing the plurality of base stations, and

determine 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 circuitry is configured to select at least any one of the base station groups based on the reception result of the communication device at the tuning set for each of the two or more base station groups, and set 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 circuitry is configured to send the setting position by setting 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 circuitry is further configured to set the subframe as a Multimedia Broadcast multicast Single Frequency Network (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 circuitry is configured to set 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 circuitry is configured to step 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 head (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:

sending, using a circuitry, a setting position to a communication device, the setting position corresponding to a location to measure a reference signal received power;

setting, using the circuitry, a timing for fewer than all of a plurality of base stations having an identical cell ID, at which a predetermined signal is respectively transmitted only from said fewer than all of the plurality of base stations having the identical cell ID, said fewer than all of the plurality of base stations being all of the plurality of base stations for which the setting position is not set; and

determining, using the circuitry, based on a reception result of the 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 non-transitory, computer-readable medium storing computer-readable instructions that, when executed on a computing device, cause the computing device to

send a setting position to a communication device, the setting position corresponding to a location to measure a reference signal received power;

set a timing for fewer than all of a plurality of base stations having an identical cell ID, at which a predetermined signal is respectively transmitted only from said fewer than all of the plurality of base stations having the identical cell ID, said fewer than all of the plurality of base stations being all of the plurality of base stations for which the setting position is not set;

based on a reception result of the 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.