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Traffic management system including packet to object synchronization mechanisms

  • US 20040047325A1
  • Filed: 08/20/2003
  • Published: 03/11/2004
  • Est. Priority Date: 08/20/2002
  • Status: Active Grant
First Claim
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1. A packet control unit (Ra, Rb, Rc, Rd;

  • PCU1-PCUn) for being included in a packet switched control network (PSCN) as one of a plurality of packet control units for controlling a packet traffic constituted by a plurality of packets (CP1-CPx) being routed between said packet control units along a plurality of packet routing links (PRL1-PRLm), said packet switched control network (PSCN) being configured in such a way that said packet routing links (PRL1-PRLm) and said packet control units (Ra, Rb;

    PCU1-PCUn) respectively correspond to path sections (RDS1-RDSm) and path points (ICP1-ICPn) of an object movement network (RDN) in which an object traffic is formed by a plurality of objects (C1-Cx) moving along said path sections (RDS1-RDSm) between said path points (ICP1-ICPn), and each path point (ICP1-ICPn) of said object movement network (RDN) having associated with it a traffic information unit (TIU1-TIUy) adapted at least to detect the arrival of objects (C1-Cx) at the path point (ICP1-ICPn) and to output a corresponding object arrival information (VAI1-VAIy), including a transmission device (TR) adapted to-send respective packets onto a packet routing link to a succeeding target packet control unit on the basis of a respective routing decision in accordance with a predetermined packet routing method used in said packet switched control network (PSCN) for the controlling of said packet traffic;

    a reception device (REC) adapted to receive packets from other packet control units (PCU1-PCUn) of said packet switched control network (PSCN) and at least one object arrival information (VAI1-VAIy) indicating the arrival of an object (CR1-CRx) at one of said path points (Px;

    ICP1-ICPn); and

    a synchronisation device (SYNC) adapted to cause the sending of a packet corresponding to said object to the packet control unit (Rx) corresponding to said path point (Px) at which the object arrival was detected by its associated traffic information unit.

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