Patents by Inventor Peter Trobridge

Peter Trobridge has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method, device and software for establishing protection paths on demand and revertive protection switching in a communications network
    Patent number: 7525907
    Abstract: In a method of providing protection switching in a meshed communications network, a protection path between two nodes on the network is only established, on demand, as it is required, after a fault along a working path between the two nodes has been detected. After the protection path is established, carriage of traffic from the working path is switched to the protection path. Once the working path is restored, traffic is switched back from the protection path to the working path, and the protection path is torn down. Switching between working and protection channels may be effected using a path establishment protocol or using protection switching mechanisms of existing network protocols, such as SONET or ATM APS. Software and network nodes embodying the method are also disclosed.
    Type: Grant
    Filed: July 5, 2002
    Date of Patent: April 28, 2009
    Assignee: Nortel Networks Limited
    Inventors: Darek R. Skalecki, Peter J. Ashwood Smith, Peter Trobridge
  • Method, device and software for establishing protection paths on demand and revertive protection switching in a communications network
    Publication number: 20040004937
    Abstract: In a method of providing protection switching in a meshed communications network, a protection path between two nodes on the network is only established, on demand, as it is required, after a fault along a working path between the two nodes has been detected. After the protection path is established, carriage of traffic from the working path is switched to the protection path. Once the working path is restored, traffic is switched back from the protection path to the working path, and the protection path is torn down. Switching between working and protection channels may be effected using a path establishment protocol or using protection switching mechanisms of existing network protocols, such as SONET or ATM APS. Software and network nodes embodying the method are also disclosed.
    Type: Application
    Filed: July 5, 2002
    Publication date: January 8, 2004
    Applicant: NORTEL NETWORKS LIMITED
    Inventors: Darek R. Skalecki, Peter J. Ashwood Smith, Peter Trobridge