Method and apparatus for setting detour path in wideband high frequency wireless system using centralized MAC protocol

• US 8,958,288 B2
• Filed: 07/14/2009
• Issued: 02/17/2015
• Est. Priority Date: 07/14/2008
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Hong, Seung Eun, Kim, Kyeongpyo, Kim, Yong Sun, Kwon, Hyoung Jin, Lee, Woo Yong
• Primary Examiner(s): Cho, Un C
• Assistant Examiner(s): Ohri, Romani
• Application Number:
  US12/502,438
• Publication Number:
  US 20100008221A1
• Time in Patent Office: 2,044 Days
• Field of Search: 370/329, 370/347, 455/455, 455/466, 455/452.2
• US Class Current: 370/226
• CPC Class Codes: H04L 41/5054 Automatic deployment of services triggered by the service manager, e.g. service implementation by automatic configuration of network components
• CPC Class Codes: H04L 41/5077 wherein the managed service relates to simple transport services, i.e. providing only network infrastructure
• CPC Class Codes: H04L 43/55 Testing of service level quality, e.g. simulating service usage
• CPC Class Codes: H04L 45/22 Alternate routing
• CPC Class Codes: H04L 45/28 using route fault recovery
• CPC Class Codes: H04W 24/04 Arrangements for maintaining operational condition
• CPC Class Codes: H04W 40/244 using a network of reference devices, e.g. beaconing

Abstract

Provided is a method and apparatus for setting a detour path in a wideband high frequency wireless system using a centralized Media Access Control (MAC) protocol. Here, in a wireless system using the centralized MAC protocol where a time synchronization and a band allocation may be performed by a single central control unit, when a signal blockage occurs while a data communication is being performed via a direct path between a source device and a destination device, the detour path may be quickly provided.

Claims

1. A controlling method of a source device for setting a detour path in a wideband high frequency wireless system, the method comprising:

receiving, by the source device from a control point belonging to a network, relay capacity information of devices managed by the control point belonging to a network;

verifying, by the source device, at least one device that is capable of being a relay device, among the devices, based on a relay capable bit field included in the relay capacity information;

verifying, by the source device, whether a destination device, that is one of the devices managed by the control point belonging to the network, is capable of using a detour path via a relay device based on a relay supportable bit field; and

selecting, by the source device, a single relay device from the verified at least one relay device to provide a detour path between the source device and the destination device.

2. The method of claim 1, wherein the selecting comprises selecting, by the source device, the single relay device to provide the detour path based on either one or both of the relay capacity information and a channel status.

3. A controlling method of an apparatus for setting a detour path in a wideband high frequency wireless system, the method comprising:

transmitting, by a source device to a relay device, a message for beamforming with the relay device;

receiving, by the source device from a control point belonging to a network, relay capacity information of devices managed by the control point belonging to the network, wherein the relay device provides a detour path with respect to a direct communication path between the source device and a destination device responsive to a relay capable bit field included in the received relay capacity information;

performing, by the source device, a beamforming process with the relay device;

receiving, by the source device from the destination device, a message for beamforming with the destination device; and

performing, by the source device, a beamforming process with the destination device.

4. The method of claim 3, further comprising obtaining, by the source device, information associated with a channel status of each of the detour path and the direct communication path as a result of the beamforming process with the relay device and the beamforming process with the destination device.

5. The method of claim 4, further comprising performing, by the source device, a data communication with the destination device via the detour path in response to a data communication with the destination device via the direct communication path being unavailable.

6. The method of claim 4, further comprising:

comparing, by the source device, the information associated with the channel status of the detour path with the information associated with the channel status of the direct communication path; and

transmitting, by the source device, data to the destination device via whichever one of the detour path and the direct communication path has a better channel status.

7. A controlling method of a relay device for setting a detour path in a wideband high frequency wireless system, the method comprising:

receiving, by the relay device from a source device, a message for beamforming between the source device and the relay device;

receiving, by the source device from a control point belonging to a network, relay capacity information of devices managed by the control point belonging to the network, wherein the relay device provides a detour path with respect to a direct communication path between the source device and a destination device responsive to a relay capable bit field included in the received relay capacity information;

performing, by the relay device, a beamforming process with the source device;

transmitting, by the relay device to the destination device, a message for beamforming between the destination device and the relay device; and

performing, by the relay device, a beamforming process with the destination device.

8. The method of claim 7, further comprising providing, by the relay device, the detour path to the source device and the destination device in response to a channel status of the detour path being better than a channel status of the direct communication path.

9. The method of claim 7, further comprising transmitting, by the relay device to the source device, a message comprising link quality information of a link between the relay device and the destination device.

10. A controlling method of an apparatus for setting a detour path in a wideband high frequency wireless system, the method comprising:

receiving, by a destination device from a relay device, a message for beamforming between the destination device and the relay device;

receiving, by a source device from a control point belonging to a network, relay capacity information of devices managed by the control point belonging to the network, wherein the relay device provides a detour path with respect to a direct communication path between the source device and the destination device responsive to a relay capable bit field included in the received relay capacity information;

performing, by the destination device, a beamforming process with the relay device;

transmitting, by the destination device to the source device, a message for beamforming between the destination device and the source device; and

performing, by the destination device, a beamforming process with the source device.

11. The method of claim 10, further comprising obtaining, by the destination device, information associated with a channel status of each of the detour path and the direct communication path as a result of the beamforming process with the relay device and the beamforming process with the source device.

12. The method of claim 10, further comprising receiving, by the destination device, data from the source device via whichever one of the detour path and the direct communication path has a better channel status.

13. The method of claim 10, further comprising performing, by the destination device, a data communication with the source device via the detour path in response to a data communication with the source device via the direct communication path being unavailable.