# US 2019/0356579 A1 · Method and apparatus for setting detour path in wideband high frequency wireless system using centralized mac protocol

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- Number: US 2019/0356579 A1
- Document ID: US20190356579A1
- Status: Published application
- Kind: A1
- Application number: 16/529,042
- Filed: 2019-08-01
- Published: 2019-11-21
- Earliest claimed: 2008-07-14
- Assignees: Electronics and Telecommunications Research Institute
- Applicants: Electronics and Telecommunications Research Institute
- Inventors: Seung Eun HONG; Kyeongpyo KIM; Yong Sun KIM; Hyoung Jin KWON; Woo Yong LEE
- Web page: https://patentgrep.com/patent/US20190356579A1

## CPC

- H04L 41/5054: Automatic deployment of services triggered by the service manager, e.g. service implementation by automatic configuration of network components
- H04L 41/5077: {wherein the managed service relates to simple transport services, i.e. providing only network infrastructure}
- H04L 43/55: Testing of service level quality, e.g. simulating service usage
- H04L 45/22: {Alternate routing}
- H04L 45/28: using route fault recovery
- H04W 24/04: Arrangements for maintaining operational condition
- H04W 40/244: {using a network of reference devices, e.g. beaconing}
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## 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

### Claim 1

An operating method of a destination device, the method comprising:
performing a first beamforming process with a relay device, and
perform a second beamforming process with a source device,
wherein the source device is configured to:
perform a third beamforming process with the relay device;
obtain a channel status of a detour path between the source device, the relay device, and the destination device;
obtain a channel status of a direct path between the source device and the destination device;
compare information associated with the channel status of the detour path with the information associated with the channel status of the direct path; and
transmit data to the destination device via whichever one of the detour path and the direct path has a better channel status.

### Claim 2 (depends on 1)

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

### Claim 3 (depends on 1)

The method of claim 1, wherein the relay device is selected by the source device based on a relay capabilities element information of at least one device.

### Claim 4 (depends on 3)

The method of claim 3, 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.

### Claim 5 (depends on 4)

The method of claim 4, wherein the relay capabilities element information further comprises a relay usability field indicating whether a corresponding device is capable of frame relaying through the detour path.