COMMUNICATION CONTROL DEVICE, COMMUNICATION CONTROL METHOD, COMMUNICATION SYSTEM AND COMMUNICATION DEVICE

• US 20130100893A1
• Filed: 06/15/2011
• Published: 04/25/2013
• Est. Priority Date: 07/07/2010
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Sawai, Ryo
• Granted Patent: US 10,375,704 B2
• Time in Patent Office: Days
• US Class Current: 370/328
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 72/00 Local resource management
• CPC Class Codes: H04W 72/56 based on priority criteria
• CPC Class Codes: H04W 8/22 Processing or transfer of terminal data, e.g. status or physical capabilities

Abstract

Provided is a communication control device controlling communication of one or more secondary usage nodes respectively providing second communication services using a part of a frequency band assigned to a first communication service, the communication control device including a communication unit receiving access technique information indicating radio access techniques usable by the corresponding secondary usage nodes from the respective secondary usage nodes, a storage unit storing the access technique information received by the communication unit, and a control unit that, when at least a portion of a service area of a second-order second communication service is included in a service area of a first-order second communication service, determines whether at least a part of communication resources can be shared between the first-order and the second-order second communication services based on the radio access techniques of the first-order and the second-order second communication services indicated by the access technique information.

Claims

1. A communication control device which controls communication of one or more secondary usage nodes respectively providing second communication services using a part of a frequency band assigned to a first communication service, the communication control device comprising:

a communication unit that receives access technique information indicating radio access techniques usable by the corresponding secondary usage nodes from the respective secondary usage nodes;

a storage unit that stores the access technique information received by the communication unit; and

a control unit that, when at least a portion of a service area of a second-order second communication service is included in a service area of a first-order second communication service, determines whether or not at least a part of communication resources can be shared between the first-order second communication service and the second-order second communication service on the basis of the radio access techniques of the first-order second communication service and the second-order second communication service indicated by the access technique information.

2. The communication control device according to claim 1,

wherein, if the service area of the second-order second communication service is not included in the service area of the first-order second communication service, even when a level of mutual interference between the first-order second communication service and the second-order second communication service exceeds an allowable interference level, the control unit determines whether or not a part of the communication resources can be shared between the first-order second communication service and the second-order second communication service.

3. The communication control device according to claim 1,

wherein, when a radio access technique indicated by the access technique information corresponding to the first-order second communication service is OFDMA, the control unit determines that a part of the communication resources can be shared.

4. The communication control device according to claim 1,

wherein, when a radio access technique indicated by the access technique information corresponding to the first-order second communication service is OFDMA, and a radio access technique indicated by the access technique information corresponding to the second-order second communication service is CSMA, the control unit determines that a part of the communication resources can be shared.

5. The communication control device according to claim 1,

wherein the control unit determines whether or not a part of the communication resources can be shared in response to a request from a secondary usage node providing the second-order second communication service.

6. The communication control device according to claim 1,

wherein, when it is determined that a part of the communication resources can be shared, the control unit requests a secondary usage node providing the first-order second communication service to provide information specifying a range of shamble communication resources.

7. The communication control device according to claim 6,

wherein the control unit provides the information specifying the range of sharable communication resources received from the secondary usage node providing the first-order second communication service to a secondary usage node providing the second-order second communication service.

8. The communication control device according to claim 6,

wherein, when there are sharable communication resources, the control unit supplies a synchronization signal to the secondary usage nodes respectively providing the first-order second communication service and the second-order second communication service.

9. The communication control device according to claim 6,

wherein, when there are sharable communication resources, the control unit transmits control information for preventing interference caused by sharing the communication resources to a secondary usage node providing the second-order second communication service.

10. The communication control device according to claim 1, further comprising:

an estimation unit that estimates a service area of the first-order second communication service and a service area of the second-order second communication service using service area information for estimating the service areas of the second communication services provided by the secondary usage nodes,

wherein the communication unit further receives the service area information from the respective secondary usage nodes.

11. The communication control device according to claim 1,

wherein, when no portion of the service area of the second-order second communication service is included in the service area of the first-order second communication service, the control unit reduces the service area of the second-order second communication service in order to share the communication resources.

12. A communication control method for controlling communication of a plurality of secondary usage nodes respectively providing second communication services using a part of a frequency band assigned to a first communication service, the communication control method comprising:

receiving access technique information indicating radio access techniques usable by the corresponding secondary usage nodes from the respective secondary usage nodes;

storing the received access technique information; and

when at least a portion of a service area of a second-order second communication service is included in a service area of a first-order second communication service, determining whether or not at least a part of communication resources can be shared between the first-order second communication service and the second-order second communication service on the basis of the radio access techniques of the first-order and second-order second communication services indicated by the access technique information.

13. A communication system which includes a plurality of secondary usage nodes respectively providing second communication services using a part of a frequency band assigned to a first communication service and a communication control device controlling communication of the plurality of secondary usage nodes,

wherein each of the secondary usage nodes includes:

a communication unit that transmits access technique information indicating radio access techniques usable by the corresponding secondary usage nodes to the communication control device, and

wherein the communication control device includes;

a communication unit that receives the access technique information from the respective secondary usage nodes;

a storage unit that stores the access technique information received by the communication unit; and

a control unit that, when at least a portion of a service area of a second-order second communication service is included in a service area of a first-order second communication service, determines whether or not at least a part of communication resources can be shared between the first-order second communication service and the second-order second communication service on the basis of the radio access techniques of the first-order second communication service and the second-order second communication service indicated by the access technique information.

14. A communication device which provides a second communication service using a part of a frequency band assigned to a first communication service, the communication device comprising:

a communication unit that transmits access technique information indicating a radio access technique usable by the communication device to another device in order to cause the other device to determine whether or not it is necessary to share a part of communication resources of the second communication service with another second communication service; and

a secondary usage control unit that specifies a range of communication resources sharable with the other second communication service in response to a request from the other device when the other device determines that a service area of the second communication service includes a service area of the other second communication service, and it is necessary to share a part of the communication resources of the second communication service on the basis of the access technique information.