METHOD FOR RESERVING RESOURCES ON A CENTRALIZED NETWORK

• US 20110289175A1
• Filed: 01/15/2010
• Published: 11/24/2011
• Est. Priority Date: 01/16/2009
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Kim, Chang-Joo, Lee, Moon-Won, You, Sung-Jin, Song, Myung-Sun, Ko, Gwangzeen
• Granted Patent: US 8,661,143 B2
• Time in Patent Office: Days
• US Class Current: 709/208
• CPC Class Codes: H04W 28/26 Resource reservation

Abstract

A resource reservation method between a master device and a slave device or between slave devices in a centralized network. In resource reservation between slave devices, optimal resources may be allocated by performing link measurement between the slave devices before allocating the resources.

Claims

1. A resource reservation method of a master device in a centralized network including the master device and a slave device when the master device is a reservation target and the slave device is a reservation owner, the method comprising:

receiving a resource reservation request from the slave device;

transmitting a resource reservation response to the slave device; and

including information regarding resource reservation into a beacon.

2. The method of claim 1, wherein the receiving of the resource reservation request comprises receiving a channel reservation protocol (CRP) reservation request command frame in a reservation-based signalling window (RSW) slot from the slave device.

3. The method of claim 1, wherein the transmitting of the resource reservation response comprises transmitting a CRP reservation response command frame in an RSW slot, or transmitting a CRP information element (IE) by including the CRP IE into a beacon of a next superframe.

4. The method of claim 1, wherein the including of the information regarding resource reservation comprises including a CRP IE regarding resource reservation into the beacon.

5. A resource reservation method of a slave device in a centralized network including a master device and the slave device when the master device is a reservation target and the slave device is a reservation owner, the method comprising:

scanning resources;

transmitting a resource reservation request to the master device; and

receiving a resource reservation response from the master device.

6. The method of claim 5, wherein the scanning of the resources comprises scanning superframes equal to or greater than a maximum value of the number of superframes allowed even without listening to a beacon period.

7. The method of claim 5, wherein the transmitting of the resource reservation request comprises transmitting a channel reservation protocol (CRP) reservation request command frame in a reservation-based signalling window (RSW) slot.

8. The method of claim 5, wherein the receiving of the resource reservation response comprises receiving a CRP reservation response command frame in an RSW slot, or receiving a next superframe in which a CRP information element (IE) is included in a beacon.

9. The method of claim 5, further comprising regularly transmitting an echo beacon or promoting the slave device to a regular beaconing device after resource reservation is completed.

10. A resource reservation method of a master device in a centralized network including the master device and a slave device when the master device is a reservation owner and the slave device is a reservation target, the method comprising:

transmitting a resource reservation request to the slave device;

receiving a resource reservation response from the slave device; and

including information regarding resource reservation into a beacon.

11. The method of claim 10, wherein the transmitting of the resource reservation request comprises transmitting a beacon including a channel reservation protocol (CRP) information element (IE) or a CRP reservation request command frame in a reservation-based signalling window (RSW) slot to the slave device.

12. The method of claim 10, the receiving of the resource reservation response comprises receiving a reservation response command frame in an RSW slot from the slave device.

13. The method of claim 10, wherein the including of the information regarding resource reservation comprises including a CRP IE regarding resource reservation into the beacon.

14. A resource reservation method of a slave device in a centralized network including a master device and the slave device when the master device is a reservation owner and the slave device is a reservation target, the method comprising:

receiving a resource reservation request from the master device; and

transmitting a resource reservation response to the master device.

15. The method of claim 14, wherein the receiving of the resource reservation request comprises receiving a beacon including a channel reservation protocol (CRP) information element (IE) or a CRP reservation request command frame in a reservation-based signalling window (RSW) slot from the slave device, and

wherein the transmitting of the resource reservation response comprises transmitting a reservation response command frame in an RSW slot if the CRP IE in the beacon is received, and transmitting a CRP reservation response command frame in the same or different RSW slot if the CRP reservation request command frame is received in the RSW slot.

16. The method of claim 14, further comprising regularly transmitting an echo beacon or promoting the slave device to a regular beaconing device after resource reservation is completed.

17. A resource reservation method of a master device for resource reservation between first and second slave devices in a centralized network including the master device and the first and second slave devices when the first slave device is a reservation owner and the second slave device is a reservation target, the method comprising:

receiving a slot request from the first slave device;

allocating a slot to the first slave device; and

informing the network about reservation negotiation between the first and second slave devices.

18. The method of claim 17, wherein the receiving of the slot request comprises receiving a reservation-based signalling window (RSW) slot request, and

wherein the allocating of the slot comprises allocating an RSW slot.

19. The method of claim 17, wherein the informing about the reservation negotiation comprises including information elements (IEs) regarding the first and second slave devices into a beacon to inform the first and second slave devices about the reservation negotiation.

20. A resource reservation method of a first slave device in a centralized network including a master device, the first slave device, and a second slave device when the first slave device that is a reservation owner and the second slave device is a reservation target, the method comprising:

performing link measurement between the first and second slave devices;

transmitting a resource reservation request to the second slave device;

receiving a resource reservation response from the second slave device; and

listening to resource reservation by the master device.

21. The method of claim 20, further comprising:

transmitting a reservation-based signalling window (RSW) slot request in a contention signalling window to the master device; and

receiving an allocated RSW slot from the master device,

before the link measurement is performed.

22. The method of claim 20, wherein the performing of the link measurement comprises:

transmitting to the second slave device an examination command frame not including information elements (IEs) to request the link measurement; and

receiving from the second slave device an examination command frame including IEs to report a result of the link measurement.

23. The method of claim 20, wherein the transmitting of the resource reservation request comprises transmitting a channel reservation protocol (CRP) reservation request command frame.

24. The method of claim 20, further comprising regularly transmitting an echo beacon or promoting the first slave device to a regular beaconing device after resource reservation is completed.

25. A resource reservation method of a second slave device in a centralized network including a master device, a first slave device, and the second slave device when the first slave device is a reservation owner and the second slave device is a reservation target, the method comprising:

receiving from the first slave device an examination command frame for link measurement;

transmitting to the first slave device an examination command frame including information elements (IEs) to report the link measurement;

receiving a resource reservation request from the first slave device;

transmitting a resource reservation response to the first slave device; and

listening to resource reservation by the master device.

26. The method of claim 25, further comprising regularly transmitting an echo beacon or promoting the second slave device to a regular beaconing device after resource reservation is completed.