Wireless communication system, base station, and wireless communication system control method

Patent metadata

Field	Value
Publication number	US-9686006-B2
Application number	US-201514730621-A
Country	US
Kind code	B2
Filing date	Jun 4, 2015
Priority date	Dec 25, 2009
Publication date	Jun 20, 2017
Grant date	Jun 20, 2017

Abstract

A wireless communication system includes a first communication station that connects with a higher-order station or a lower-order station in a communication path of multi-hop wireless communication and that carries out wireless communication with a mobile terminal in access areas in predetermined wireless resources that differ from relay areas for wireless communication with the higher-order station or the lower-order station in the wireless resources, and a second communication station that constitutes a communication path that differs from the communication path of the multi-hop wireless communication, that uses the wireless resources to carry out wireless communication with a mobile terminal, and that acquires information indicating the relay areas in the wireless resources.

First claim

The invention claimed is:

1. A wireless communication system, comprising:
a first communication station that connects with a higher-order station or a lower-order station in a communication path of multi-hop wireless communication and that carries out wireless communication with a mobile terminal in access areas in predetermined wireless resources that differ from relay areas for wireless communication with said higher-order station or said lower-order station in the wireless resources;
a second communication station that constitutes a communication path that differs from the communication path of said multi-hop wireless communication, that is configured to use said wireless resources to carry out wireless communication with a mobile terminal, and that acquires information indicating said relay areas in the wireless resources; and
a management server that reports information indicating said relay areas to said second communication station,
wherein said second communication station detects the first communication station that is present in its own vicinity and reports to said management server.

2. The wireless communication system as set forth in claim 1 , wherein said second communication station preferentially uses said relay areas over said access areas.

3. The wireless communication system as set forth in claim 2 , wherein said second communication station preferentially uses said relay areas over said access areas to carry out wireless communication with a mobile terminal.

4. The wireless communication system as set forth in claim 2 , wherein said second communication station implements power control such that said relay areas are preferentially used over said access areas.

5. The wireless communication system as set forth in claim 1 , wherein said second communication station comprises a communication station that is disposed in the neighborhood of said first communication station.

6. The wireless communication system as set forth in claim 1 , wherein the management server manages said first communication station and said second communication station, and
wherein said management server reports information indicating said relay areas to said second communication station.

7. The wireless communication system as set forth in claim 1 , wherein said first communication station comprises a base station that forms a first cell to perform wireless communication with a mobile terminal or a relay station that is wirelessly connected by relay areas to a base station and that forms a second cell to wirelessly connect to a mobile terminal, and
wherein said second communication station comprises a femto base station that forms a third cell in or in a vicinity of said first cell or said second cell.

8. The wireless communication system as set forth in claim 1 , wherein said first communication station reports to said management server information indicating said relay areas in the first communication station.

9. The wireless communication system as set forth in claim 1 , wherein said management server reports information indicating said relay areas in the first communication station to the second communication station in a vicinity of which the first communication station is present.

10. The wireless communication system as set forth in claim 1 , wherein said second communication station preferentially uses said relay areas over said access areas to carry out the wireless communication, and
wherein, when scheduling target data is present, said second communication station arranges the data in the access areas if there is no vacancy in the relay areas.

11. The wireless communication system as set forth in claim 1 , wherein said second communication station preferentially uses said relay areas over said access areas to carry out the wireless communication, and
wherein, when scheduling target data is present, said second communication station does not arrange the data in a frame if there is no vacancy in the relay areas and the access areas.

12. A wireless communication system, comprising:
a first communication station that connects with a higher-order station or a lower-order station in a communication path of multi-hop wireless communication and that carries out wireless communication with a mobile terminal in access areas in predetermined wireless resources that differ from relay areas for wireless communication with said higher-order station or said lower-order station in the wireless resources; and
a second communication station that constitutes a communication path that differs from the communication path of said multi-hop wireless communication, that is configured to use said wireless resources to carry out wireless communication with a mobile terminal, and that acquires information indicating said relay areas in the wireless resources,
wherein said second communication station preferentially uses said relay areas over said access areas to carry out the wireless communication, and
wherein, when scheduling target data is present, said second communication station arranges the data in the relay areas if there is a vacancy in the relay areas in a frame.

13. A base station that forms a cell inside or in a vicinity of the cell of a communication station, that connects with a higher-order station or lower-order station in a communication path of multi-hop wireless communication, and that performs wireless communication with a mobile terminal in access areas in predetermined wireless resources that differ from relay areas for wireless communication with said higher-order station or said lower-order station in the wireless resources, and that constitutes a communication path that differs from the communication path of said multi-hop wireless communication, said base station comprising:
a wireless communication processing unit that uses said wireless resources to carry out wireless communication with a mobile terminal;
a control unit that acquires information indicating said relay areas in said wireless resources; and
a management server that reports information indicating said relay areas to said wireless communication processing unit,
wherein said wireless communication processing unit detects the communication station that is present in its own vicinity and reports to said management server.

14. The base station as set forth in claim 13 , wherein said control unit causes said wireless communication processing unit to preferentially use said relay areas over said access areas.

15. The base station as set forth in claim 14 , wherein said control unit causes said wireless communication processing unit to preferentially use said relay areas over said access areas to carry out wireless communication with a mobile terminal.

16. The base station as set forth in claim 14 , wherein said control unit implements power control such that said relay areas are preferentially used over said access areas.

17. The base station as set forth in claim 13 , wherein said base station is arranged in the vicinity of said communication station.

18. The base station as set forth in claim 13 , wherein the management server manages said communication station and said base station, and
wherein information that indicates said relay areas is reported from said management server to said base station.

Assignees

• Nec Corp

Inventors

• Watanabe Yoshikazu

Classifications

• H04W52/244

  Interferences in heterogeneous networks, e.g. among macro and femto or pico cells or other sector / system interference [OSI] · CPC title

• H04W84/047

  using dedicated repeater stations · CPC title

• H04W88/08

  Access point devices · CPC title

• H04W16/32 Primary

  Hierarchical cell structures · CPC title

• H04B7/14 Primary

  Relay systems · CPC title