System and method for distributing proxying error information in wireless networks

• US 7,894,408 B2
• Filed: 05/12/2006
• Issued: 02/22/2011
• Est. Priority Date: 05/12/2006
• Status: Active Grant

• Current Assignee: ARRIS Enterprises LLC (CommScope Holding Company, Inc.)
• Original Assignee: Motorola Solutions, Inc.
• Inventors: Joshi, Avinash, Goldberg, Keith J., Zeng, Surong
• Primary Examiner(s): DOAN, PHUOC HUU
• Application Number:
  US11/383,042
• Publication Number:
  US 20070266143A1
• Time in Patent Office: 1,747 Days
• Field of Search: None
• US Class Current: 370/338
• CPC Class Codes: H04L 45/54 Organization of routing tables
• CPC Class Codes: H04W 40/246 Connectivity information discovery
• CPC Class Codes: H04W 40/28 for reactive routing

Abstract

A system and method for distributing proxying error information in wireless networks is provided. The includes associating a proxy node with a non-routable node; sending a data packet from an initiator node to the proxy node for delivery to the non-routable node; determining by the proxy node that the non-routable device has disassociated from the proxy node; sending a proxy error message from the proxy node to the initiator node to inform the initiator node that the non-routable node is no longer proxied by the proxy node; and starting a route discovery process for the non-routable device by the initiator node.

Claims

1. A method for distributing proxying error information in a wireless network comprising a plurality of nodes, the method comprising:

associating a proxy node with a non-routable node, wherein the proxy node includes a proxy table;

sending a data packet from an originator node to the proxy node for delivery to the non-routable node;

disassociating the non-routable node from the proxy node;

updating the proxy table by the proxy node to remove the non-routable node from the proxy table;

determining by the proxy node that the non-routable device has disassociated from the proxy node by the proxy node determining that the non-routable node is not included within the proxy table;

sending a proxy error message from the proxy node to the originator node to inform the originator node that the non-routable node is no longer proxied by the proxy node; and

starting a route discovery process for the non-routable node by the originator node.

2. A method for distributing proxying error information as claimed in claim 1,

wherein the sending the data packet step comprises sending the data packet from the originator node through at least one intermediary node to the proxy node, the method further comprising:

sending the proxy error message from the proxy node to the at least one intermediary node.

3. A method for distributing proxying error information as claimed in claim 2, wherein the intermediary node includes a proxy table, the method further comprising:

receiving the proxy error message at the intermediary node; and

updating the proxy table of the intermediary node to remove the association of the proxy node with the non-routable node.

4. A method for distributing proxying error information as claimed in claim 2, wherein the intermediary node includes a proxy table, the method further comprising prior to the sending the data packet step:

identifying the proxy node associated with the non-routable node by the intermediary node using the proxy table.

5. A method for distributing proxying error information as claimed in claim 1, wherein the originating node includes a proxy table, the method further comprising:

receiving the proxy error message by the originating node; and

updating the proxy table of the originating node to remove the association of the proxy node with the non-routable node.

6. A method for distributing proxying error information as claimed in claim 1, wherein the originating node includes a proxy table, the method further comprising prior to the sending the data packet step:

identifying the proxy node associated with the non-routable node by the originating node using the proxy table.

7. A method for distributing proxying error information as claimed in claim 1, further comprising prior to the determining step:

geographically relocating the non-routable node; and

causing the disassociating of the non-routable node from the proxy node by the geographically relocating of the non-routable node.

8. A method for distributing proxying error information as claimed in claim 1, wherein the proxy error message comprises:

an originator node address,

a proxy node address and

a non-routable node address.