Reserving resources in centralized network by scanning superframes equal to or greater than maximum number of superframes allowed without listening to beacon period

• US 8,661,143 B2
• Filed: 01/15/2010
• Issued: 02/25/2014
• Est. Priority Date: 01/16/2009
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Lee, Moon-Won, You, Sung-Jin, Ko, Gwangzeen, Song, Myung-Sun, Kim, Chang-Joo
• Primary Examiner(s): Barry, Lance L
• Application Number:
  US13/145,078
• Publication Number:
  US 20110289175A1
• Time in Patent Office: 1,502 Days
• Field of Search: 709208-211, 709/225
• US Class Current: 709/228
• 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 which scans superframes to check whether resources are not reserved by the other devices by scanning superframes equal to or greater than a maximum value of a number of superframes allowed even without listening to a beacon period;

transmitting a resource reservation response to the slave device; and

including information regarding the 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 superframes to check whether resources are not reserved by the other devices, wherein the scanning superframes comprises scanning superframes equal to or greater than a maximum value of a number of superframes allowed even without listening to a beacon period;

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 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.

7. 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.

8. 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.