Coordinator, gateway, and transmission method for IPv6 in wireless sensor network

• US 20090146833A1
• Filed: 05/21/2008
• Published: 06/11/2009
• Est. Priority Date: 12/11/2007
• Status: Abandoned Application

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Kim, Bong Soo, Park, Sungjin, Chae, Jong suk, Ryu, Jae Hong, Yang, Sooyoung, Pyo, Cheol Sig, Kim, Youn-Soo, Lee, Eun Ju, Kim, Hyung Seok
• Application Number:
  US12/153,602
• Publication Number:
  US 20090146833A1
• Time in Patent Office: Days
• US Class Current: 340/825.520
• CPC Class Codes: H04L 2101/622 Layer-2 addresses, e.g. medium access control [MAC] addresses
• CPC Class Codes: H04L 2101/672 Short addresses
• CPC Class Codes: H04L 61/2596 Translation of addresses of the same type other than IP, e.g. translation from MAC to MAC addresses
• CPC Class Codes: H04L 69/16 Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
• CPC Class Codes: H04L 69/167 Adaptation for transition between two IP versions, e.g. between IPv4 and IPv6 translation of Internet protocol [IP] addresses H04L61/2503
• CPC Class Codes: H04W 8/26 Network addressing or numbering for mobility support
• CPC Class Codes: H04W 80/04 Network layer protocols, e.g. mobile IP [Internet Protocol]
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: H04W 88/16 Gateway arrangements

Abstract

Provided are a coordinator, a gateway, and a transmission method for applying IPv6 in a wireless sensor network (WSN). Dual addressing of a link local address using a short address used in the WSN and a global unicast address using an extended unique identifier (EUI) of a node makes it possible to support mobility of the WSN and communicate data with an external network.

Claims

1. A gateway for IPv6 in a wireless sensor network (WSN), the gateway comprising:

a table generator generating a table by using received extended unique identifiers (EUls) and short addresses;

a searching unit extracting a short address of an originator node of a packet received from inside the WSN from a source address of the packet and searching for an EUI corresponding to the extracted short address from the table; and

a source address changing unit generating a global unicast address by using a found EUI and changing the source address to the global unicast address.

2. The gateway of claim 1, wherein the source address changing unit generates the global unicast address by using the EUI as an interface ID.

3. The gateway of claim 1, wherein the source address changing unit changes the source address to the global unicast address if a destination of the packet is outside of the network or the originator node is a mobile node.

4. A gateway for IPv6 in a WSN, the gateway comprising:

a table generator generating a table by using received EUls and short addresses;

a searching unit extracting an EUI of a destination node of a received packet from a destination address of the packet if the destination address of the packet is inside the WSN and searching for a short address corresponding to the extracted EUI from the table; and

a destination address changing unit generating a link local address by using a found short address and changing the destination address to the link local address.

5. The gateway of claim 4, wherein the destination address changing unit generates the link local address by using the short address as an interface ID.

6. The gateway of claim 4, wherein the destination address changing unit compresses the link local address to the found short address and changes the destination address to the compressed short address.

7. A method of transmitting IPv6 in a coordinator of a WSN, the method comprising:

generating a link local address by using a short address allocated to a child node;

transmitting the short address and an EUI received from the child node to a gateway; and

transmitting the link local address to the child node.

8. The method of claim 7, wherein the generating of the link local address source comprises:

generating the link local address by using the short address as an interface ID.

9. The method of claim 7, wherein the transmitting comprises:

receiving the EUI through a router request of the child node.

10. The method of claim 7, further comprising:

if the destination address of the packet received from the child node is in the form of a global unicast address, transmitting the packet to the gateway, and

if the destination address of the packet received from the child node is not in the form of a global unicast address, transmitting the packet to the gateway by using a hierarchical routing method.

11. A method of transmitting IPv6 in a gateway of a WSN, the method comprising:

generating a table by using received EUIs and short addresses;

extracting a short address of an originator node of a packet received from inside the WSN from a source address of the packet and searching for an EUI corresponding to the extracted short address from the table; and

generating a global unicast address by using a found EUI and changing the source address to the global unicast address.

12. The method of claim 11, wherein the generating of the global unicast address comprises:

generating the global unicast address by using the EUI as an interface ID.

13. The method of claim 11, wherein the generating of the global unicast address comprises:

changing the source address to the global unicast address if a destination of the packet is outside of the network or the originator node is a mobile node.

14. A method of transmitting IPv6 in a gateway of a WSN, the method comprising:

generating a table by using received EUls and short addresses;

extracting an EUI of a destination node of a received packet from a destination address of the packet if the destination address of the packet is inside the WSN and searching for a short address corresponding to the extracted EUI from the table; and

generating a link local address by using a found short address and changing the destination address to the link local address.

15. The method of claim 14, wherein the generating of the link local address comprises:

generating the link local address by using the short address as an interface ID.

16. The method of claim 14, wherein the generating of the link local address comprises:

compressing the link local address to the found short address and changing the destination address to the compressed short address.