ZigBee network device for separately determining network parameter and assigning addresses, and address assignment method thereof

• US 7,996,561 B2
• Filed: 06/14/2005
• Issued: 08/09/2011
• Est. Priority Date: 06/14/2004
• Status: Active Grant

• Current Assignee: City University of New York, Samsung Electronics Co. Ltd.
• Original Assignee: City University of New York, Samsung Electronics Co. Ltd.
• Inventors: Hu, Xu-hui, Liu, Yong, Lee, Myung-jong
• Primary Examiner(s): Jean Gilles; Jude J
• Assistant Examiner(s): Means; Jaren M
• Application Number:
  US11/151,651
• Publication Number:
  US 20050281207A1
• Time in Patent Office: 2,247 Days
• Field of Search: 709/223, 709/220
• US Class Current: 709/245
• CPC Class Codes: H04L 2101/604 Address structures or formats
• CPC Class Codes: H04L 45/04 Interdomain routing, e.g. hierarchical routing
• CPC Class Codes: H04L 45/46 Cluster building
• CPC Class Codes: H04L 61/5038 for local use, e.g. in LAN or USB networks, or in a controller area network [CAN]
• CPC Class Codes: H04W 8/26 Network addressing or numbering for mobility support

Abstract

A ZigBee network device assigns addresses to its child devices. The ZigBee network device includes a communication section that connects the ZigBee network device to other devices and which communicates with the other devices; a parameter determination section that determines at least one network parameter; a calculation section that calculates addresses for child devices of the ZigBee network device based on a determined network parameter, where each of the child devices is connected to the ZigBee network device via the communication section; and a controller that assigns addresses to the child devices of the ZigBee network device. At least one determined network parameter is at least one of Cm, which indicates a maximum number of the child devices of the ZigBee network device, and Rm, which indicates a maximum number of the child devices of the ZigBee network device which have routing capabilities.

Claims

1. A ZigBee network device comprising:

a communication unit which connects the ZigBee network device to other devices and which communicates with the other devices;

a parameter determination section which determines at least one network parameter;

a calculation section which calculates addresses for child devices of the ZigBee network device based on a determined network parameter, wherein each of the child devices is connected to the ZigBee network device via the communication unit; and

a controller which assigns the addresses to the child devices of the ZigBee network device;

wherein the at least one determined network parameter is at least one of Cm, which indicates a maximum number of child devices of the ZigBee network device, and Rm, which indicates a maximum number of the child devices of the ZigBee network device which have routing capabilities, and

wherein the Cm and Rm are individually and discretely calculated by each ZigBee network device in a ZigBee network environment.

2. The ZigBee network device of claim 1, wherein the calculation section calculates each address based on the following equations:

sm=s+1+(Cm_A−

1)*Cskip_A, 

 

I)

3. The ZigBee network device of claim 1, wherein the calculation section calculates each address based on the following equations:

sm=s+1+(Cm_A−

1)*Cskip_A, 

 

I)

4. The ZigBee network device of claim 1, wherein the parameter determination section determines Rm in accordance with a level depth in a cluster tree structure.

5. An address assignment method of a ZigBee network device under a ZigBee network environment of a cluster tree structure, the method comprising:

determining, by a processor of the ZigBee network device, at least one network parameter;

calculating addresses for child devices of the ZigBee network device; and

assigning the addresses to the child devices of the ZigBee network device based on a connection order of the children;

wherein the at least one network parameter is at least one of Cm, which indicates a maximum number of the child devices of the ZigBee network device, and Rm, which indicates a maximum number of the child devices of the ZigBee network device with routing capabilities, and

wherein the Cm and Rm are individually, and discretely calculated by each ZigBee network device in a ZigBee network environment.

6. The address assignment method of claim 5, wherein the calculating of the addresses is based on the following equations;

sm=s+1+(Cm_A−

1)*Cskip_A, 

 

I)

7. The address assignment method of claim 5, wherein the calculating of the addresses is based on the following equations:

sm=s+1+(Cm_A−

1)*Cskip_A, 

 

I)

8. The address assignment method of claim 5, wherein the determining of the at least one network parameter comprises determining Rm in accordance with a level depth of the ZigBee network device in a cluster tree structure.