Method and system of providing IP-based packet communications in a utility network

• US 8,429,295 B2
• Filed: 05/24/2007
• Issued: 04/23/2013
• Est. Priority Date: 02/02/2007
• Status: Active Grant

• Current Assignee: Itron Networked Solutions, Inc. (Itron, Inc.)
• Original Assignee: Silver Spring Networks, Inc. (Itron, Inc.)
• Inventors: Vaswani, Raj, Pace, James, Flammer, George, Ramasatry, Jay
• Primary Examiner(s): Whipple, Brian P
• Application Number:
  US11/807,185
• Publication Number:
  US 20080189436A1
• Time in Patent Office: 2,161 Days
• Field of Search: 370/335, 370/389, 370/395.52, 370/216, 709/242
• US Class Current: 709/242
• CPC Class Codes: G01D 21/00 Measuring or testing not otherwise provided for
• CPC Class Codes: G01D 4/004 Remote reading of utility meters to a fixed location
• CPC Class Codes: G06F 15/17306 Intercommunication techniques
• CPC Class Codes: H04L 12/4633 Interconnection of networks using encapsulation techniques, e.g. tunneling
• CPC Class Codes: H04L 2101/659 Internet protocol version 6 [IPv6] addresses
• CPC Class Codes: H04L 45/22 Alternate routing
• CPC Class Codes: H04L 45/28 using route fault recovery
• CPC Class Codes: H04L 45/741 Routing in networks with a plurality of addressing schemes, e.g. with both IPv4 and IPv6
• CPC Class Codes: H04L 61/10 of different types
• CPC Class Codes: H04L 61/251 between different IP versions
• CPC Class Codes: H04L 61/2514 between local and global IP addresses
• CPC Class Codes: H04L 61/4511 using domain name system [DNS]
• CPC Class Codes: H04L 61/5007 Internet protocol [IP] addresses
• 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: H04L 61/5061 Pools of addresses
• CPC Class Codes: H04L 67/125 involving control of end-device applications over a network
• CPC Class Codes: H04L 69/14 Multichannel or multilink protocols
• 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 4/33 for indoor environments, e.g. buildings
• CPC Class Codes: H04W 48/08 : Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 60/04 : using triggered events
• 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 84/12 : WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 84/18 : Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: H04W 88/005 : Data network PoA devices
• CPC Class Codes: H04W 88/08 : Access point devices
• CPC Class Codes: H04W 92/02 : Inter-networking arrangements
• CPC Class Codes: Y02B 90/20 : Smart grids as enabling technology in buildings sector smart grids supporting the management or operation of end-user stationary applications in general, or like technologies with no associated climate change mitigation effect Y04S20/00
• CPC Class Codes: Y02D 30/50 : in wire-line communication networks, e.g. low power modes or reduced link rate
• CPC Class Codes: Y04S 20/30 : Smart metering, e.g. specially adapted for remote reading
• CPC Class Codes: Y04S 40/18 : Network protocols supporting networked applications, e.g. including control of end-device applications over a network

Abstract

One example embodiment provides a method and system where a node in a utility network registers with one or more access point devices associated with one or more local area utility networks. The utility node generates a unique network address using a network address prefix of a network address associated with the access point device. The utility node registers with a DNS server. Messages sent to the utility node are routed through the access point corresponding to the received prefix used to generate the unique network address for the utility node. The network address for the utility node and access point may be IPv6 addresses and the network address prefix may be an IPv6 prefix, or may be an IPv4 address.

Claims

1. A wireless communication system comprising:

a plurality of utility nodes configured to receive commodity meter information, the utility nodes being connected in a utility network; and

a plurality of access point devices connected to the utility network, the access point devices providing communication between the plurality of utility nodes and at least one wide area network;

wherein at least one of the plurality of utility nodes is configured to;

register with a plurality of access points by;

sending registration messages to more than one of said plurality of access point devices, and

for each of the plurality of access point devices that acknowledges a registration message sent by the at least one node, obtaining a unique network address of the at least one node corresponding, to that access point device in response to receipt of the acknowledgement, to thereby obtain a plurality of unique network addresses that are concurrently available for communications via the respective access point devices with which the at least one node is registered;

generate a message intended for a network destination accessible though the at least one wide area network connected with one of the plurality of access point devices with which the at least one node is registered; and

send the generated message to the intended network destination via said one of the plurality of access point devices by utilizing the unique network address obtained for said one of the plurality of access point devices.

2. The wireless communication system of claim 1, wherein the intended network destination is associated with a global network address, and wherein the global network address associated with the intended network destination is used by the utility node to send the message.

3. The wireless communication system of claim 1, wherein at least one of the plurality of unique network addresses corresponding to the access point device that the at least one node is registered with includes an address prefix associated with the access point device the utility node is registered with.

4. The wireless communication system of claim 3, wherein the address prefix is an IPv6 address prefix.

5. A method of communicating in a network, comprising:

sending registration messages from a node to more than one of a plurality of access point devices associated with at least one wireless utility network;

for each of the plurality of access point devices that acknowledges a registration message sent by the node, obtaining a unique network address of the node corresponding to that access point device in response to receipt of the acknowledgement, to thereby obtain a plurality of unique network addresses that are concurrently available for communications via the respective access point devices with which the node is registered;

registering the plurality of unique network addresses with a dynamic domain name server;

generating in the node a message intended for a network destination accessible though at least one wide area network connected with one of the plurality of access point devices with which the node is registered; and

sending the generated message to the intended network destination via the one of the plurality of access point devices by utilizing the unique network address obtained for the one of the plurality of access point devices.

6. The method of claim 5, wherein the plurality of unique network addresses include a network address prefix received from the corresponding one of the plurality access point devices the node is registered with.

7. The method of claim 6, wherein the plurality of unique network addresses are IPv6 addresses, and each received network address prefix is an IPv6 prefix of a network address of a corresponding one of the plurality of access point devices.

8. The method of claim 6, wherein the plurality of unique network addresses are IPv4 addresses, and each received network address prefix is an IPv4 prefix of a network address of a corresponding one of the plurality of access point devices.

9. The method of claim 7, further comprising:

routing messages to the utility node according to one of the plurality of unique network addresses that includes the received network address prefix received from the corresponding access point device, wherein the routed messages are routed through the access point device corresponding to the IPv6 prefix.

10. The method of claim 9, wherein one of the plurality of unique network addresses for a utility node is chosen according to a network address preference indicator.

11. The method of claim 10, wherein the network address preference indicator is stored in a DNS server associated with the at least one wireless local area utility network.

12. A method of communicating in a network, comprising:

receiving a network address for a utility node; and

providing at least two unique network addresses corresponding to the utility node,

wherein;

the at least two unique network addresses are selected from a plurality of concurrently available unique network addresses obtained by the utility node from each of a plurality of access point devices which have acknowledged a registration message sent by the utility node and with which the utility node has registered,

the at least two unique network addresses each respectively correspond to one of the plurality of access point devices the utility node is registered with, and are concurrently available for communications via the corresponding one of the plurality of access point devices with which the utility node has registered, and

messages sent using the at least two unique network addresses to the utility node are routed through the corresponding one of the plurality of access point devices with which the utility node has registered.

13. The method of claim 12, wherein the provided unique network address is selected according to a preference indicator.

14. The method of claim 13, wherein the preference indicator corresponds to a configurable cost metric of packet delivery performance of a connection to the corresponding utility node.

15. The method of claim 13, wherein the preference indicator is based on at least one of:

reliability, speed, priority, or link quality.

16. The method of claim 14, wherein the preference indicator corresponds to a configurable policy.

17. The method of claim 13, further comprising:

modifying the preference indicator corresponding to the unique network address used to send a message to the utility node in response to a failed attempt to deliver a message to the utility node.

18. The method of claim 16, further comprising:

selecting an alternate route upon failure of initial packet delivery attempt.

19. The method of claim 17, further comprising:

modifying preference indicators of DNS entries corresponding to other nodes that are dependent on a node which failed to deliver the message to the utility node.