Multi-hop wireless network system, method for maintaining tree network topology, and first member node

Patent metadata

Field	Value
Publication number	US-2025185087-A1
Application number	US-202418404919-A
Country	US
Kind code	A1
Filing date	Jan 5, 2024
Priority date	Nov 30, 2023
Publication date	Jun 5, 2025
Grant date	—

Abstract

Embodiments of the disclosure provide a multi-hop wireless network system including multiple network nodes, a method for maintaining a tree network topology, and a first member node. The multi-hop wireless network system includes the first member node. The first member node is connected to a control node of the network nodes through a first relay node in the tree topology network formed by the network nodes, and operates as a second relay node. The first member node is configured to: in response to determining that connection between the first relay node and the first member node is disconnected, stop operating as the second relay node.

First claim

What is claimed is:

1 . A multi-hop wireless network system comprising a plurality of network nodes, comprising:
a first member node, connected to a control node of the network nodes through a first relay node in a tree topology network formed by the network nodes, and operating as a second relay node, wherein the first member node is configured to:
in response to determining that connection between the first relay node and the first member node is disconnected, stop operating as the second relay node.

2 . The multi-hop wireless network system according to claim 1 , wherein a distance between the first member node and the control node exceeds a connection distance threshold.

3 . The multi-hop wireless network system according to claim 1 , wherein the first member node is connected to a wireless terminal interface of a second member node through an access point interface of the first member node to operate as the second relay node of the second member node.

4 . The multi-hop wireless network system according to claim 3 , wherein the first member node stops operating as the second relay node by disabling the access point interface of the first member node.

5 . The multi-hop wireless network system according to claim 4 , wherein the first member node is further configured to:
in response to determining that the first member node is switched through the control node to be connected to the control node through a third relay node, operate again as the second relay node by enabling the access point interface of the first member node.

6 . The multi-hop wireless network system according to claim 1 , wherein the first member node operates as a wireless terminal served by the first relay node.

7 . The multi-hop wireless network system according to claim 6 , wherein the first member node is connected to an access point interface of the first relay node through a wireless terminal interface of the first member node, and the first member node is configured to:
in response to determining that connection between the wireless terminal interface of the first member node and the access point interface of the first relay node is disconnected, determine that the connection between the first relay node and the first member node is disconnected.

8 . The multi-hop wireless network system according to claim 1 further comprising:
the control node, configured to:
obtain a signal scan result of the first member node; and
switch the first member node to be connected to the control node through a third relay node based on the signal scan result of the first member node.

9 . The multi-hop wireless network system according to claim 8 , wherein the control node is a multi-point relay, and the first member node is a mesh access point.

10 . A method for maintaining a tree network topology, executed by a first member node of a plurality of network nodes of a multi-hop wireless network system, wherein the first member node is connected to a control node of the network nodes through a first relay node in a tree topology network formed by the network nodes, and operates as a second relay node, wherein the method comprises:
in response to determining that connection between the first relay node and the first member node is disconnected, the first member node stopping operating as the second relay node.

11 . A first member node, connected to a control node of a plurality of network nodes through a first relay node in a tree topology network formed by the network nodes, and operating as a second relay node, wherein the first member node is configured to:
in response to determining that connection between the first relay node and the first member node is disconnected, stop operating as the second relay node.

12 . The first member node according to claim 11 , wherein a distance between the first member node and the control node exceeds a connection distance threshold.

13 . The first member node according to claim 11 , wherein the first member node is connected to a wireless terminal interface of a second member node through an access point interface of the first member node to operate as the second relay node of the second member node.

14 . The first member node according to claim 13 , wherein the first member node stops operating as the second relay node by disabling the access point interface of the first member node.

15 . The first member node according to claim 14 , wherein the first member node is further configured to:
in response to determining that the first member node is switched through the control node to be connected to the control node through a third relay node, operate again as the second relay node by enabling the access point interface of the first member node.

16 . The first member node according to claim 11 , wherein the first member node operates as a wireless terminal served by the first relay node.

17 . The first member node according to claim 16 , wherein the first member node is connected to an access point interface of the first relay node through a wireless terminal interface of the first member node, and the first member node is configured to:
in response to determining that connection between the wireless terminal interface of the first member node and the access point interface of the first relay node is disconnected, determine that the connection between the first relay node and the first member node is disconnected.

18 . The first member node according to claim 11 , wherein the control node is a multi-point relay, and the first member node is a mesh access point.

Assignees

• Moxa Inc

Inventors

• Shih Fu-Jen
• Hung Cheng-Tsung
• Lu Chia-Ching

Classifications

• H04W40/248

  Connectivity information update · CPC title

• H04W40/04

  based on wireless node resources · CPC title

• H04W40/12

  based on transmission quality or channel quality · CPC title

• H04W40/22 Primary

  using selective relaying for reaching a BTS [Base Transceiver Station] or an access point · CPC title

• H04W48/20

  Selecting an access point · CPC title