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

• US 9,900,243 B2
• Filed: 02/16/2015
• Issued: 02/20/2018
• 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): Ohri, Romani
• Application Number:
  US14/623,252
• Publication Number:
  US 20150163129A1
• Time in Patent Office: 1,100 Days
• Field of Search: 370226
• 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. An operating method of a source device in a network, the method comprising:

receiving relay capabilities element information of at least one device;

selecting, by the source device, a relay device, to provide a detour path with respect to a direct communication path between the source device and a destination device, from the at least one device based on the relay capabilities element information,

wherein the relay capabilities element information comprises;

a relay supportability field indicating whether the at least one device is capable of relaying by transmitting and receiving frames between a pair of other devices, and

a relay preference field indicating whether the at least one device prefers to be either the relay device or one of the source device and the destination device;

performing, by the source device, a first beam forming process with the selected relay device, wherein the selected relay device performs a second beamforming process with the destination device;

obtaining a channel status of the detour path between the source device, the selected relay device, and the destination device as a result of the first beam forming process and the second beam forming process;

performing, by the source device, a third beam forming process with the destination device;

obtaining a channel status of the direct communication path between the source device and the destination device as a result of the third beamforming process;

comparing, by the source device, 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.

2. The method of claim 1, further comprising verifying whether the destination device is capable of using the detour path based on relay capabilities element information of the destination device.

3. The method of claim 1, wherein the relay capabilities element information further includes a relay usability field, the relay usability field indicating whether a corresponding device is capable of frame relaying through the detour path.

4. The method of claim 1, wherein the source device, the destination device, and the relay device belong to a same network.

5. The method of claim 1, wherein the selecting of the relay device comprises transmitting a probe request command message and receiving a probe response command message that includes the relay capabilities element information.