Granted Patent B2

US 12,250,057 · App. 17/857,848 · Granted Mar 11, 2025

Inventors: Hiroshi Nishimoto (Tokyo, JP); Yasunori Kato (Tokyo, JP); Manabu Sakai (Tokyo, JP); Kenichiro Kamohara (Tokyo, JP); Hiroyasu Sano (Tokyo, JP)

Assignee: MITSUBISHI ELECTRIC CORPORATION

H04B7/15507H04W4/40H04W40/248

Abstract

Claims (38)

1. A wireless relay station to be included in a ladder-type wireless relay network along a moving route of a moving object, the wireless relay station comprising:

a relay controller to include station identification information in the wireless relay network that is assigned sequentially along the moving route to each of wireless relay stations included in the wireless relay network and deployed along the moving route, to configure and update, using a first routing table that provides an address of a destination wireless relay station, a second routing table including the address, the station identification information, and an information update time, being associated with one another, of the destination wireless relay station, and to provide control to share, among the wireless relay stations included in the wireless relay network, the second routing table configured and updated by each of the wireless relay stations; and

a relay communicator to perform wireless relay communication with another one of the wireless relay stations.

2. The wireless relay station according to claim 1 , wherein

the relay communicator comprises a wireless relay communication module having a wireless interface that supports sidelink standardized in Third Generation Partnership Project.

3. The wireless relay station according to claim 1 , comprising:

an external communicator to perform wireless communication different from the wireless relay communication.

4. The wireless relay station according to claim 3 , wherein

the external communicator comprises an external communication module having a wireless interface that supports Long Term Evolution standardized in Third Generation Partnership Project.

5. The wireless relay station according to claim 3 , wherein

the external communicator comprises an external communication module having a wireless interface that supports Fifth Generation New Radio standardized in Third Generation Partnership Project.

6. The wireless relay station according to claim 1 , wherein

the relay controller configures and updates the second routing table including a received electric field strength measurement value of a signal transmitted from a wireless relay station represented by the station identification information.

7. The wireless relay station according to claim 1 , wherein

the relay controller configures and updates the second routing table including an inter-station distance measurement value representing a distance from a wireless relay station represented by the station identification information.

8. The wireless relay station according to claim 1 , wherein

the relay controller configures and updates the second routing table including positioning information representing a location of a wireless relay station represented by the station identification information.

9. The wireless relay station according to claim 7 , wherein

the relay controller configures and updates the second routing table including a location accuracy metric value of a wireless relay station represented by the station identification information.

10. The wireless relay station according to claim 8 , wherein

the relay controller configures and updates the second routing table including a location accuracy metric value of a wireless relay station represented by the station identification information.

11. The wireless relay station according to claim 1 , comprising:

an Internet of Things communicator to collect information representing an environmental condition around the wireless relay station.

12. The wireless relay station according to claim 11 , wherein

the Internet of Things communicator comprises at least one of a wireless communication module, a wired communication module, or a sensor module.

13. The wireless relay station according to claim 1 , wherein the wireless relay station is immobile.

14. The wireless relay station according to claim 1 , wherein the wireless relay station moves on the moving route.

15. A wireless relay system comprising two or more of the wireless relay station according to claim 1 .

16. A control circuit for controlling a wireless relay station to be included in a ladder-type wireless relay network along a moving route of a moving object, the control circuit causing the wireless relay station to:

include station identification information in the wireless relay network that is assigned sequentially along the moving route to each of wireless relay stations included in the wireless relay network and deployed along the moving route, configure and update, using a first routing table that provides an address of a destination wireless relay station, a second routing table including the address, the station identification information, and an information update time, being associated with one another, of the destination wireless relay station, and provide control to share, among the wireless relay stations included in the wireless relay network, the second routing table configured and updated by each of the wireless relay stations; and

perform wireless relay communication with another one of the wireless relay stations.

17. A non-transitory storage medium storing a program for controlling a wireless relay station to be included in a ladder-type wireless relay network along a moving route of a moving object, wherein

the program causes the wireless relay station to

include station identification information in the wireless relay network that is assigned sequentially along the moving route to each of wireless relay stations included in the wireless relay network and deployed along the moving route, configure and update, using a first routing table that provides an address of a destination wireless relay station, a second routing table including the address, the station identification information, and an information update time, being associated with one another, of the destination wireless relay station, and provide control to share, among the wireless relay stations included in the wireless relay network, the second routing table configured and updated by each of the wireless relay stations, and

perform wireless relay communication with another one of the wireless relay stations.

18. A wireless relay method for a wireless relay station to be included in a ladder-type wireless relay network along a moving route of a moving object, the wireless relay method comprising:

including station identification information in the wireless relay network that is assigned sequentially along the moving route to each of wireless relay stations included in the wireless relay network and deployed along the moving route, configuring and updating, by using a first routing table that provides an address of a destination wireless relay station, a second routing table including the address, the station identification information, and an information update time, being associated with one another, of the destination wireless relay station, and providing control to share, among the wireless relay stations included in the wireless relay network, the second routing table configured and updated by each of the wireless relay stations; and

performing wireless relay communication with another one of the wireless relay stations.

Assignments (1)

Continuity (2)

References Cited (29)