Integrated network system

• US 6,996,630 B1
• Filed: 06/15/2000
• Issued: 02/07/2006
• Est. Priority Date: 06/18/1999
• Status: Expired due to Fees

• Current Assignee: Massachusetts Institute of Technology, Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Original Assignee: Massachusetts Institute of Technology, Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Inventors: Masaki, Ichiro, Mizunuma, Ichiro
• Primary Examiner(s): Wiley, David
• Assistant Examiner(s): MESFIN, YEMANE
• Application Number:
  US09/763,142
• Time in Patent Office: 2,063 Days
• Field of Search: 709238-242, 709/249, 709/250, 709/203, 709/207, 709/225, 709/227, 709/228, 370/230, 370/235, 370/237, 370/238, 370/351, 370/395.21, 379/208.01
• US Class Current: 709/239
• CPC Class Codes: H04L 45/10 Routing in connection-oriented networks, e.g. X.25 or ATM
• CPC Class Codes: H04L 47/70 Admission control; Resource allocation
• CPC Class Codes: H04L 47/745 Reaction in network
• CPC Class Codes: H04L 47/762 triggered by the network
• CPC Class Codes: H04L 47/805 QOS or priority aware
• CPC Class Codes: H04L 47/824 Applicable to portable or mobile terminals
• CPC Class Codes: H04W 28/16 Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
• CPC Class Codes: H04W 4/90 Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
• CPC Class Codes: H04W 40/02 Communication route or path selection, e.g. power-based or shortest path routing
• CPC Class Codes: H04W 76/50 for emergency connections

Abstract

An integrated network gives priority to message traffic associated with a first network over message traffic associated with a second network. This arrangement allows a private network, such an emergency network, to be integrated with a public network, such as a cellular network, while preventing the cellular network traffic from blocking emergency network traffic. Lower priority connections can be preempted by higher priority connections. The integrated network can migrate a request from a first node to a neighboring node and can re-route a connection around a failed link.

Claims

1. A method of routing traffic in an integrated network, comprising:

coupling a first network to a second network to form at least a part of an integrated network;

assigning a higher priority to routing paths associated with the first network than routing paths associated with the second network;

preempting existing routing paths associated with the second network to establish routing paths requested by nodes associated with the first network; and

generating a request for data from a first node of the integrated network, selecting a node of the integrated network neighboring the first node and establishing a routing path from the neighboring node, the neighboring node being selected based upon similarities of fields of view for cameras associated with the first node and the neighboring node, respectively.

2. The method of claim 1, further including assigning the higher priorities based upon a plurality of priority factors.

3. The method according to claim 2, wherein the priority factors are selected from the group consisting of a value assigned to a node, a value corresponding to an elapsed time to establish a connection, a value corresponding to a condition associated with a requested server node, a value corresponding to a requested bandwidth, and a value corresponding to a condition of nodes that neighbor nodes of a requested node.

4. The method according to claim 2, further including summing the plurality of priority factors to determine priority of a connection request.

5. The method according to claim 2, wherein a first of the plurality of priority factors includes a value assigned to a node.

6. The method according to claim 3, wherein a second of the plurality of priority factors includes a value corresponding to elapsed time.

7. The method according to claim 4, wherein a third of the plurality of priority factors includes a value corresponding to a condition associated with the requested server.

8. The method according to claim 1, further including converting a protocol of data traffic passing through the first network to the second network from a first protocol to a second protocol.

9. The method according to claim 8, further including converting the protocol based upon data traffic type.

10. The method according to claim 1, further including migrating a request from the first node to a second node.

11. The method according to claim 1, further including decreasing bandwidth of a request.

12. The method according to claim 1, wherein the first network comprises a traffic surveillance network including a plurality of cameras and a plurality of clients including a traffic center.