Device and method for controlling use of a frequency band shared by a cellular system and wireless system among multiple base stations

• US 10,694,391 B2
• Filed: 06/22/2015
• Issued: 06/23/2020
• Est. Priority Date: 08/29/2014
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Takano, Hiroaki
• Primary Examiner(s): Elpenord, Candal
• Application Number:
  US15/327,479
• Publication Number:
  US 20170201888A1
• Time in Patent Office: 1,828 Days
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 74/0816 with collision avoidance
• CPC Class Codes: H04W 84/042 Public Land Mobile systems, e.g. cellular systems
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

A device includes a carrier sense unit configured to perform carrier sense for predetermined radio resources among radio resources of a frequency band shared by a cellular system and a wireless local area network (LAN) and a first control unit configured to control wireless communication of a base station of the cellular system in the frequency band in a manner that no signal is transmitted through the predetermined radio resources among the radio resources of the frequency band, and a signal is transmitted through radio resources other than the predetermined radio resources.

Claims

1. A device, comprising:

circuitry including at least a processor and a memory, the circuitry configured to

perform carrier sense for predetermined radio resources among radio resources of a frequency band that is shared by a first cellular system and a wireless local area network (LAN);

control a first base station of the first cellular system in the frequency band so that no signal is transmitted through the predetermined radio resources after an identified frame or sub-frame;

provide a notification, to a second base station, indicating the radio frame or sub-frame after which the first base station is to end wireless communication in the frequency band; and

end wireless communication of the second base station in the frequency band at a timing at which the first base station ends the wireless communication using the frequency band.

2. The device according to claim 1, wherein the predetermined radio resources are radio resources of a partial band, which is a fixed band that does not vary periodically.

3. The device according to claim 1, wherein the predetermined radio resources are radio resources of a partial band, which is a band that varies periodically.

4. The device according to claim 3, wherein the partial band is a band that varies periodically according to a predetermined pattern.

5. The device according to claim 1, wherein the predetermined radio resources are radio resources of two or more partial bands which are parts of the frequency band.

6. The device according to claim 1, wherein the circuitry is further configured to control wireless communication of the first base station in the frequency band according to a result of the carrier sense.

7. The device according to claim 1, wherein the second base station is located near the first base station.

8. The device according to claim 1, wherein the second base station is included in a second cellular system different from the first cellular system.

9. The device according to claim 8, wherein

the first cellular system is a system of a first operator, and

the second cellular system is a system of a second operator different from the first operator.

10. The device according to claim 1, wherein the circuitry is further configured to end wireless communication of the first base station in the frequency band according to a timing at which the second base station ends the wireless communication using the frequency band.

11. The device according to claim 1, wherein the frequency band is a channel of the wireless LAN.

12. The device according to claim 1, wherein the device is the first base station, a base station device for the first base station, or a circuit for the base station device.

13. The device according to claim 1, wherein the predetermined radio resources are radio resources of a partial band which is a part of the frequency band.

14. The device according to claim 13, wherein the radio resources include other radio resources of another partial band which is a part of the frequency band.

15. The device according to claim 1, wherein the wireless communication of the second base station in the frequency band is set to end at the radio frame or sub-frame indicated in the notification.

16. The device according to claim 1, wherein the circuitry is further configured to receive an acknowledgement, from the second base station, of the transmitted notification.

17. The device according to claim 1, wherein the circuitry is further configured to provide a start notification, to the second base station, that indicates a start timing of the wireless communication.

18. A method, comprising:

performing, by circuitry, carrier sense for predetermined radio resources among radio resources of a frequency band shared that is by a cellular system and a wireless local area network (LAN);

controlling, by the circuitry, a first base station of the cellular system in the frequency band so that no signal is transmitted through the predetermined radio resources and after an identified frame or sub-frame;

providing a notification, to a second base station, indicating the radio frame or sub-frame after which the second base station is to end wireless communication in the frequency band; and

ending wireless communication of the second base station in the frequency band at a timing at which the first base station ends the wireless communication using the frequency band.

19. The method according to claim 18, wherein the predetermined radio resources are radio resources of a partial band which is a part of the frequency band.

20. The method according to claim 19, wherein the radio resources include other radio resources of another partial band which is a part of the frequency band.