MULTIPLE PANS CONFLICT RESOLUTION METHOD IN ZIGBEE

• US 20100150065A1
• Filed: 08/03/2009
• Published: 06/17/2010
• Est. Priority Date: 12/15/2008
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: KIM, Hyun-Hak, DOH, Yoonmee, PARK, No-Seong, PYO, Cheol Sig, JUN, Jong-Arm
• Granted Patent: US 8,457,047 B2
• Time in Patent Office: Days
• US Class Current: 370/328
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

Disclosed is a method of preventing overlap of multiple PANs in a ZigBee network. According to the method of preventing overlap of multiple personal area networks (PANs) in the ZigBee network, a first node included in a first PAN of the ZigBee network verifies whether overlap of the multiple PANs occurs by verifying packets received from neighbor nodes, identifies beacon information of a neighbor node that causes the overlap of the multiple PANs by gradually adjusting radio frequency (RF) transmission wave, and adjusts a communication range based on the beacon information.

Claims

1. A method of preventing overlap of multiple personal area networks (PANs) in a ZigBee network, the method performed by a first node included in a first PAN of the ZigBee network comprising:

verifying whether overlap of the multiple PANs occurs by verifying packets received from neighbor nodes;

identifying beacon information of a neighbor node that causes the overlap of the multiple PANs by gradually adjusting radio frequency (RF) transmission wave; and

adjusting a communication range based on the beacon information.

2. The method of claim 1, wherein the verifying of the overlap of the multiple PANs comprises verifying the packets received from the neighbor nodes, and identifying overlap of the multiple PANs where overlap in communication ranges with neighbor nodes included in different PANs occurs.

3. The method of claim 1, wherein the identifying of the beacon information comprises transmitting a beacon request message by gradually changing a strength level of the RF transmission wave, receiving a beacon response message in response to the beacon request message, gradually adjusting the RF transmission wave, and identifying the beacon information of the neighbor node that causes the overlap of the multiple PANs, when the overlap of the multiple PANs is verified.

4. The method of claim 3, wherein the beacon information is included in the beacon response message.

5. The method of claim 1, wherein the adjusting of the communication range comprises determining a strength level of an RF transmission wave to be capable of preventing the overlap of the multiple PANs based on the beacon information.

6. The method of claim 1, further comprising:

connecting the first node to the second node, when a second node that is a node in the first PAN is a closest node to the first node among nodes in the communication range of the first node.

7. The method of claim 1, further comprising:

connecting the first node to the second node and joined to a second PAN, when a second node that is a node in the second PAN is a closest node to the first node among nodes in the communication range of the first node.

8. A method of preventing overlap of multiple PANs in a ZigBee network, the method performed by a first node included in a first PAN of the ZigBee network comprising:

determining whether a communication status of communication performed over the first PAN satisfies a predetermined communication standard;

identifying beacon information of a neighbor node included in a different PAN that causes overlap with the first PAN by gradually changing an RF transmission wave, when the communication status does not satisfy the communication standard; and

adjusting a communication range based on the beacon information.

9. The method of claim 8, wherein the identifying of the beacon information of the neighbor node comprises transmitting a beacon request message by gradually changing a strength level of the RF transmission wave, receiving a beacon response message in response to the beacon request message, gradually adjusting the RF transmission wave, and identifying the beacon information of the neighbor node included in the different PAN that causes the overlap with the first PAN, when the overlap with the first PAN is verified.

10. The method of claim 9, wherein the beacon information is included in the beacon response message.

11. The method of claim 9, wherein the adjusting of the communication range adjusts the communication range by determining a strength level of an RF transmission wave to be capable of preventing overlap with the first PAN based on the beacon information.

12. The method of claim 8, further comprising:

connecting the first node to a second node, when the second node that is a node in the first PAN is a closest node among nodes in the communication range of the first node.

13. The method of claim 8, further comprising:

connecting the first node to a second node and included in the second PAN, when the second node that is a node in the second PAN is a closest node among nodes in the communication range of the first node.

14. The method of claim 8, wherein the predetermined communication standard is a standard that is related to a transmission/reception rate and a transmission/reception error generation rate of each node over the PAN.

15. A node capable of preventing overlap of multiple PANs in a ZigBee network, wherein the node is included in a PAN of the ZigBee network and comprises:

a communication unit to perform transmission and reception of packets with neighbor nodes; and

a node controlling unit to verify overlap of the multiple PANs;

wherein the node controlling unit identifies beacon information of a neighbor node that causes overlap of the multiple PANs by gradually adjusting an RF transmission wave transmitted via the communication unit, and adjusting a communication range based on the beacon information.

16. The node of claim 15, wherein the node controlling unit verifies overlap of the multiple PANs where overlap in communication ranges with neighbor nodes included in different PANs occurs by verifying the packets.

17. The node of claim 15, wherein the node controlling unit comprises:

transmitting a beacon request message by gradually changing a strength level of the RF transmission wave through the communication unit, receiving a beacon response message in response to the beacon request message, gradually adjusting the RF transmission wave, and identifying the beacon information of the neighbor node that cause the overlap of the multiple PANs, when the overlap of the PAN is identified.

18. The node of claim 15, wherein the node controlling unit adjusts the communication range by determining the strength level of the RF transmission wave to be capable of preventing the overlap of the multiple PANs based on the beacon information.

19. A node capable of preventing overlap of multiple PANs in a ZigBee network, the node comprising:

a communication status determining unit to determine whether communication status of communication performed over a first PAN satisfies a predetermined standard;

a beacon information verifying unit to identify beacon information of a neighbor node included in a different PAN that causes overlap with the first PAN by gradually adjusting an RF transmission wave, when the predetermined communication standard is not satisfied; and

a communication controlling unit to adjust a communication range based on the beacon information.

20. The node of claim 19, wherein the predetermined communication standard is a standard related to a transmission/reception rate and a transmission/reception error generation rate of each node over the PAN.