COMMUNICATION CONTROL DEVICE, COMMUNICATION CONTROL METHOD, RADIO COMMUNICATION SYSTEM, BASE STATION, AND TERMINAL DEVICE

• US 20160119850A1
• Filed: 05/01/2014
• Published: 04/28/2016
• Est. Priority Date: 06/05/2013
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: KIMURA, Ryota, SAWAI, Ryo, UCHIYAMA, Hiromasa, FURUICHI, Sho, BOURGEOIS, Thomas
• Granted Patent: US 9,918,268 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04W 16/28 using beam steering
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 36/00837 Determination of triggering parameters for hand-off
• CPC Class Codes: H04W 36/30 by measured or perceived connection quality data

Abstract

[Object] To make it possible to select an optimum connection destination cell in consideration of an influence of future control

[Solution] There is provided a communication control device including an interference control unit configured to perform interference control for a radio communication system including a plurality of base stations and a plurality of terminal devices, and a decision unit configured to correct a decision index which is based on a measurement report generated by a first terminal device by factoring in an influence of the interference control performed by the interference control unit after the first terminal device performs measurement and to perform handover decision on the first terminal device using the corrected decision index.

Claims

1. A communication control device comprising:

an interference control unit configured to perform interference control for a radio communication system including a plurality of base stations and a plurality of terminal devices; and

a decision unit configured to correct a decision index which is based on a measurement report generated by a first terminal device by factoring in an influence of the interference control performed by the interference control unit after the first terminal device performs measurement and to perform handover decision on the first terminal device using the corrected decision index.

2. The communication control device according to claim 1,

wherein the measurement report is transferred to the communication control device by a serving base station of the first terminal device.

3. The communication control device according to claim 1,

wherein the interference control unit controls an antenna beam of at least one base station or at least one terminal device, and

wherein the decision unit corrects the decision index by factoring in a corrected term indicating an influence of the control of the antenna beam.

4. The communication control device according to claim 1,

wherein the interference control unit controls transmission power of at least one base station or at least one terminal device, and

wherein the decision unit corrects the decision index by factoring in a corrected term indicating an influence of the control of the transmission power.

5. The communication control device according to claim 3,

wherein the decision index includes reference signal received power (RSRP), and

wherein the corrected term is an offset value of the RSRP.

6. The communication control device according to claim 3,

wherein the decision index includes a received quality index calculated based on a reference signal received power (RSRP), and

wherein the corrected term is factored into the calculation of the received quality index.

7. The communication control device according to claim 1,

wherein the decision index indicates a throughput calculated using an index included in the measurement report, and

wherein the decision unit factors in the influence of the interference control when an estimated value of the throughput after handover is calculated.

8. The communication control device according to claim 1,

wherein the decision unit further decides whether a target base station selected using the corrected decision index is to receive connection of the first terminal device.

9. The communication control device according to claim 8,

wherein the decision unit transmits a message to instruct the target base station to receive handover to the target base station when the decision unit decides that the target base station is to receive the connection of the first terminal device.

10. The communication control device according to claim 8,

wherein the decision unit decides whether the connection of the first terminal device is to be received by comparing the number of allowable terminals of the target base station calculated using a weight different according to a type of terminal to a threshold value.

11. The communication control device according to claim 8,

wherein the decision unit decides whether the connection of the first terminal device is to be received by comparing the number of allowable terminals of the target base station counted for each type of terminal to a threshold value different for each type of terminal.

12. A communication control method that is performed by a communication control device, the communication control method comprising:

performing interference control for a radio communication system including a plurality of base stations and a plurality of terminal devices;

correcting a decision index which is based on a measurement report generated by a first terminal device by factoring in an influence of the interference control performed after the first terminal device performs measurement; and

performing handover decision on the first terminal device using the corrected decision index.

13. A radio communication system comprising:

a plurality of base stations;

a plurality of terminal devices; and

a control node configured to perform interference control for the radio communication system,

wherein the control node corrects a decision index which is based on a measurement report generated by a first terminal device by factoring in an influence of the interference control performed after the first terminal device performs measurement and performs handover decision on the first terminal device using the corrected decision index.

14. The radio communication system according to claim 13,

wherein the control node is a different node from the plurality of base stations.

15. The radio communication system according to claim 13,

wherein the control node is a node mounted on one of the plurality of base stations.

16. A base station comprising:

a communication unit configured to communicate with a communication control device that performs interference control for a radio communication system including a plurality of base stations and a plurality of terminal devices; and

a control unit configured to cause the communication unit to transfer a measurement report generated by a first terminal device and used for handover decision to the communication control device that performs the handover decision on the first terminal device.

17. A terminal device comprising:

a radio communication unit configured to transmit or receive a radio signal using an antenna capable of beam steering; and

a control unit configured to generate a measurement report used for handover decision and transmit, in the measurement report or apart from the measurement report, a corrected term indicating an influence of an antenna beam assumed to be formed by the antenna after measurement from the radio communication unit to a serving base station.

18. A communication control device comprising:

a control unit configured to perform control of radio resources for a radio communication system including a plurality of base stations and a plurality of terminal devices; and

a decision unit configured to correct a decision index which is based on a measurement report generated by a first terminal device by factoring in an influence of the control of the radio resources performed by the control unit after the first terminal device performs measurement and to perform handover decision on the first terminal device using the corrected decision index.