ESTABLISHING METHOD FOR SELF-ORGANIZATION NETWORK OF WIRELESS NODES

• US 20160192241A1
• Filed: 06/09/2015
• Published: 06/30/2016
• Est. Priority Date: 12/25/2014
• Status: Active Grant

• Current Assignee: Delta Electronics Incorporated
• Original Assignee: Delta Electronics Incorporated
• Inventors: TSENG, Chao-Chun, HUANG, Bo-Syuan, CHEN, Meng-Seng, LO, Tien-Szu
• Granted Patent: US 9,801,218 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 40/00 Communication routing or communication path finding
• CPC Class Codes: H04W 76/14 Direct-mode setup
• CPC Class Codes: H04W 84/20 Master-slave selection or change arrangements

Abstract

A self-organization network establishing method comprising following steps is presented. A plurality of zone controllers (ZCs) establishes a connection, and one of the ZCs is chosen as a ZC-head. The ZC-head instructs the ZCs to enable a joining-permitted function. A plurality of wireless nodes respectively searches for one of the ZCs to join to a corresponding controller network thereof after the ZCs enable the joining-permitted function. The ZC-head collects data of the wireless nodes through the ZCs, and generates configuration messages for each wireless node based on the collected data. The ZCs disconnect all network connections after the collection is completed. Finally, each wireless node respectively re-searches for their best ZC to join to the corresponding controller network thereof according to the configuration messages.

Claims

1. A method for establishing a self-organization network, the method comprising:

a) connecting a plurality of zone controllers for establishing a local area network;

b) enabling an joining-permitted function respectively by the plurality of zone controllers;

c) connecting to one of the plurality of zone controllers by a wireless node to join a corresponding controller network thereto;

d) collecting information of the wireless node by a head zone controller of the plurality of zone controllers through the local area network for generating a configuration message for the wireless node, wherein the configuration message records a best connection target of the wireless node;

e) splitting the local area network and the controller network;

f) connecting to the best connection target by the wireless node based on the configuration message after the step e, wherein the best connection target is one of the plurality of zone controllers; and

g) joining to the controller network of the best connection target by the wireless node for operating the joined controller network as a self-organization network of a located zone.

2. The method of claim 1, further comprises a step a1) after the step a:

choosing one of the plurality of zone controllers as the head zone controller.

3. The method of claim 1, wherein the configuration message records a media access control address of the wireless node and a media access control address of the best connection target.

4. The method of claim 3, wherein the plurality of zone controllers are interconnected for establishing the local area network through Zigbee protocol.

5. The method of claim 4, wherein the configuration message records EUI-64 code defined in Zigbee protocol of the wireless node and the best connection target.

6. The method of claim 1, wherein the head zone controller is a main Zigbee coordinator defined in Zigbee protocol, the rest of zone controllers are Zigbee routers or other coordinators defined in Zigbee protocol.

7. The method of claim 1, wherein the plurality of zone controllers use same transmitting power (TxPower) for signal transmission.

8. The method of claim 1, wherein the wireless node is an equipment controller or a sensor, and the wireless node is arranged with the best connection target in a same zone.

9. The method of claim 1, wherein in the step c, the wireless node connects to one of the plurality of zone controllers having strongest signal or nearest to itself according to a default setting.

10. The method of claim 1, wherein the step d comprises following steps:

d1) sending a testing signal externally by the wireless node;

d2) responding a test reporting message to the wireless node respectively by the plurality of zone controllers when receiving the testing signal successfully, wherein each test reporting message at least comprises device code of the zone controller responding the test reporting message, and received signal strength upon receiving the testing signal; and

d3) updating a reporting information to the head zone controller through the local area network respectively by the plurality of zone controllers when receiving the testing signal, wherein each reporting information at least comprises device code of the wireless node, device code of the zone controller updating the reporting information, transmitting power of the testing signal, and received signal strength upon receiving the testing signal.

11. The method of claim 10, wherein the step d further comprises following steps:

d4) determining if a test procedure is completed or not by the wireless node after the step d1; and

d5) adjusting the transmitting power of the testing signal and sending the testing signal again via the adjusted transmitting power by the wireless node if the test procedure is not completed.

12. The method of claim 10, wherein the step d further comprises following steps:

d6) analyzing the reporting information by the head zone controller after the step d3 for determining the best connection target of the wireless node from the plurality of zone controllers;

d7) generating the configuration message based on analyzed result, wherein the configuration message records a media access control address of the wireless node and a media access control address of the best connection target; and

d8) transmitting the configuration message to the zone controllers or the wireless node, or to both of the zone controllers and the wireless node at the same time.

13. The method of claim 12, wherein the head zone controller decides one of the plurality of zone controllers having a highest received signal strength from the wireless node based on a minimum strength transmitting power (min_TxPower,max_RSS) as the best connection target of the wireless node.

14. The method of claim 13, wherein in the step f, the wireless node connects to the best connection target through the minimum transmitting power.

15. A method for establishing a self-organization network, the method comprising:

a) choosing a head zone controller from a plurality of zone controllers, wherein the plurality of zone controllers interconnect with each other for establishing a local area network, and each zone control establishes a controller network respectively;

b) sending a controlling command by the head zone controller to the plurality of zone controllers to enable a joining-permitted function of each zone controller;

c) accepting a connection request from a wireless node and permitting the wireless node to join to the corresponding controller network by one of the plurality of zone controller after the step b;

d) collecting information of the wireless node through the local area network by the head zone controller, and determining a best connection target of the wireless node from the plurality of zone controllers based on the collected information;

e) sending the controlling command by the head zone controller to the plurality of zone controllers after the step d to split the local area network and the controller networks;

f) resending the connection request by the wireless node to the best connection target for connecting with the best connection target after the step d; and

g) joining to the controller network of the best connection target by the wireless node and operating the joined controller network as a self-organization network of a located zone.

16. The method of claim 15, wherein the step d comprises following steps:

d1) sending a testing signal externally by the wireless node;

d2) updating a reporting information to the head zone controller through the local area network respectively by the plurality of zone controllers when receiving the testing signal, wherein each reporting information at least comprises device code of the wireless node, device code of the zone controller updating the reporting information, transmitting power of the testing signal, and received signal strength upon receiving the testing signal;

d3) determining if a test procedure of the wireless node is completed after the step d2;

d4) adjusting a transmitting power of the testing signal by the wireless node if the test procedure is not completed and re-executing the step d1 to the step d3 based on the adjusted transmitting power;

d5) analyzing the received reporting information by the head zone controller after the test procedure is completed for determining the best connection target of the wireless node from the plurality of zone controllers;

d6) generating a configuration message based on analyzed result, wherein the configuration message records a media access control address of the wireless node and the best connection target; and

d7) transmitting the configuration message to the plurality of zone controllers or the wireless node, or to both of the plurality of zone controllers and the wireless node at the same time.

17. The method of claim 16, wherein the plurality of zone controllers are interconnected for establishing the local area network through Zigbee protocol, and the configuration message records EUI-64 code defined in Zigbee protocol of the wireless node and the best connection target.

18. The method of claim 17, wherein the head zone controller is a main Zigbee coordinator defined in Zigbee protocol, the rest of zone controllers are Zigbee routers or other Zigbee coordinators defined in Zigbee protocol.

19. The method of claim 16, wherein the wireless node is an equipment controller or a sensor, and is arranged with the best connection target in same zone.

20. The method of claim 16, wherein the head zone controller decides one of the plurality of zone controllers having a highest received signal strength from the wireless node based on a minimum strength transmitting power (min_TxPower,max_RSS) as the best connection target of the wireless node in the step d5.