Mesh network communication systems and methods

• US 7,876,709 B2
• Filed: 10/05/2007
• Issued: 01/25/2011
• Est. Priority Date: 10/05/2007
• Status: Expired due to Fees

• Current Assignee: Zyrcuits IP LLC (IP Edge LLC)
• Original Assignee: Linex Technologies, Inc.
• Inventors: Garodnick, Joseph, Schilling, Donald L.
• Primary Examiner(s): Patel; Jayanti K
• Assistant Examiner(s): PARK, JUNG H
• Application Number:
  US11/973,305
• Publication Number:
  US 20090092143A1
• Time in Patent Office: 1,208 Days
• Field of Search: 370/254, 370/328, 370/331, 370/338
• US Class Current: 370/254
• CPC Class Codes: H04W 8/04 Registration at HLR or HSS [Home Subscriber Server]
• CPC Class Codes: H04W 8/082 for traffic bypassing of mobility servers, e.g. location registers, home PLMNs or home agents
• CPC Class Codes: H04W 84/22 with access to wired networks

Abstract

A mesh network communication system including one or more mesh networks and a plurality of remote subscriber users employing wireless, spread spectrum type communications for communicating with an access node in one of the mesh networks. The remote subscriber units can be mobile and can use handover to change nodes within a mesh network without a disruption of communication. The system and methods determine the location of a remote subscriber unit in a mesh network by the remote subscriber unit providing the access node with its home address and ID such that if the access node is not the home node, the home node is notified of the visiting node address such that the home node always knows the location of any remote subscriber unit based at the home node. Accordingly, communication between remote subscriber units where one of the remote subscriber units is not currently located at its home node can be accomplished without using the home node.

Claims

1. In a mesh network communication system having at least one mesh network and a plurality of nodes in each mesh network, a method of facilitating communication with a remote subscriber unit having a home node in one of the mesh networks comprising the steps of

establishing communication between the remote subscriber unit and a visiting node, which is one of the nodes other than the home node, through the use of spread spectrum type modulation;

sending a registration message from the remote subscriber unit to the visiting node identifying the remote subscriber unit;

sending a message from the visiting node to the home node informing the home node of the location of the remote subscriber unit;

informing a calling remote subscriber unit of the address of the visiting node; and

establishing communication between the first remote subscriber unit and the calling remote subscriber unit without requiring communication through the home node of the first remote subscriber unit.

2. The method of claim 1 wherein said step of sending a message from the visiting node to the home node includes routing the message via the nodes using traffic information.

3. The method of claim 1 and further comprising the step of using handover as the remote subscriber unit moves from node to node within a mesh network and/or from mesh network to mesh network.

4. The method of claim 1 and further comprising the step of maintaining signal power received at any node from remote subscriber units communicating to that node substantially constant using automatic power control.

5. The method of claim 1 wherein said step of sending a message from the visiting node to the home node includes using a central controller.

6. The method of claim 1 wherein said step of sending a message from the visiting node to the home node includes using store and forward routing.

7. The method of claim 1 and further comprising the step of the visiting node receiving a message from a second remote subscriber unit and forwarding the message to the first remote subscriber unit.

8. In a mesh network communication system having at least one mesh network and a plurality of nodes in each mesh network, a method of facilitating communicate n with a remote subscriber unit having a home node in one of the mesh networks comprising the steps of

establishing communication between the remote subscriber unit and a visiting node, which is one of the nodes other than the home node, through the use of spread spectrum type modulation;

sending a registration message from the remote subscriber unit to the visiting node identifying the remote subscriber unit;

sending a message from the visiting node to the home node informing the home node of the location of the remote subscriber unit;

the visiting node receiving a message from a second remote subscriber unit and forwarding the message to the first remote subscriber unit; and

the visiting node determining that the first remote subscriber unit no longer resides at the visiting node due to handoff of the first remote subscriber unit to another node and the visiting node forwarding the message to a second visiting node where the first remote subscriber unit now resides.

9. The method of claim 8 wherein said step of sending a message from the visiting node to the home node includes routing the message via the nodes using traffic information.

10. The method of claim 8 and further comprising the step of using handover as the remote subscriber unit moves from node to node within a mesh network and/or from mesh network to mesh network.

11. The method of claim 8 and further comprising the step of maintaining signal power received at any node from remote subscriber units communicating to that node substantially constant using automatic power control.

12. The method of claim 8 wherein said step of sending a message from the visiting node to the home node includes using a central controller.

13. The method of claim 8 wherein said step of sending a message from the visiting node to the home node includes using store and forward routing.

14. A mesh network communication system comprising

one or more mesh networks, each of said mesh networks having a plurality of nodes;

a plurality of remote subscriber units capable of accessing said nodes using spread spectrum type signals, said remote subscriber units each having a home node located in one of said mesh networks;

a first one of said remote subscriber units being located remotely from its home node and closer to a visiting node than to its home node, said first remote subscriber unit sending a registration message to said visiting node including signals identifying said first remote subscriber unit;

a second remote subscriber unit being located in one of said mesh networks and being capable of sending a first message to said first remote subscriber unit by sending said first message to the home node of said first remote subscriber unit;

said visiting node being capable of sending said registration message to the home node of said first remote subscriber unit;

the home node for said first remote subscriber unit being capable of sending said first message to said visiting node; and

said visiting node being capable of sending said first message to said first remote subscriber unit whereby further messages between said first and second remote subscriber units can be sent without using the home node of said first remote subscriber unit.

15. The system of claim 14 wherein said home node is capable of sending an ID packet signal to said second remote subscriber unit including information locating said first remote subscriber unit.

16. The system of claim 14 wherein said mesh networks include a central controller, said visiting node sending said registration message to said central controller and said central controller sending said registration message to said home node.

17. A mesh network system comprising

one or more mesh networks including a central controller, each of said mesh networks having a plurality of nodes;

a plurality of remote subscriber units capable of accessing said nodes using spread spectrum type signals, said remote subscriber units each having a home node located in one of said mesh networks;

a first one of said remote subscriber units being located remotely from its home node and closer to a visiting node than to its home node, said first remote subscriber unit sending a registration message to said visiting node including signals identifying said first remote subscriber unit;

a second remote subscriber unit being located in one of said mesh networks and being capable of sending a first message to said first remote subscriber unit by sending the first message including the address of said second remote subscriber unit to the home node of said first remote subscriber unit,

said visiting node of said first subscriber unit being capable of sending said registration message to the home node of said first remote subscriber unit,

the home node for said first remote subscriber unit being capable of sending the address of the visiting node of said first remote subscriber to its central controller,

the first message being sent to the central controller of the home node for said first remote subscriber unit,

said central controller sending the first message to said visiting node; and

said visiting node being capable of sending the first message to said first remote subscriber unit whereby further messages between said first and second remote subscriber units can be sent without using the home node of said first remote subscriber unit.

18. A mesh network system comprising

one or more mesh networks including a central controller, each of said mesh networks having a plurality of nodes;

a plurality of remote subscriber units capable of accessing said nodes using spread spectrum type signals, said remote subscriber units each having a home node located in one of said mesh networks;

a first one of said remote subscriber units being located remotely from its home node and closer to a visiting node than to its home node, said first remote subscriber unit sending a first registration message to said visiting node including signals identifying said first remote subscriber unit;

said visiting node being capable of sending a second registration message to said central controller for said visiting node, said second registration method including signals identifying said visiting node;

a second remote subscriber unit being located in one of said mesh networks and being capable of sending a first message to said first remote subscriber unit by sending the first message including the address of said second remote subscriber unit to the home node of said first remote subscriber unit,

the home node being capable of sending said first message to said central controller when said first remote subscriber unit is not at said home node; and

said visiting node of said first subscriber unit being capable of sending said registration message to the home node of said first remote subscriber unit.