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Method and system for controlling the exchange of vehicle related messages

  • US 7,849,149 B2
  • Filed: 04/06/2005
  • Issued: 12/07/2010
  • Est. Priority Date: 04/06/2004
  • Status: Expired due to Fees
First Claim
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1. A server including a message portal for administering and controlling the exchange of vehicle-related messages between a remote location and a vehicle, comprising:

  • a message receipt service for receiving messages sent from the remote location;

    a broadcast scheduler for determining when each message received by said message receipt service should be broadcast to a vehicle;

    a priority queue device for using a priority algorithm comprising a weight portion and a time portion to determine, as each message is received, an order in which each message should be broadcasted to the vehicle;

    a dispatcher device for controlling when messages, stored in the priority queue, may leave the priority queue; and

    an encoding device for encoding messages that have left said priority queue and broadcasting the encoded message to the vehicle;

    wherein said weight portion further comprises at least one weighting algorithm, andwherein a hardware processor executes the priority algorithm, the priority algorithm calculating a sending priority for each message as;


    Sending Priority=a*WEIGHT+b*(Now−

    NextScheduledTime),wherea=a weight scalar,b=a time scalar,(Now−

    NextScheduledTime)=an overdue point duration, and
    WEIGHT=(Category*ServiceLevel)+a

    *(1−

    CurrentSaturation)+b

    *Bellcurve(CurrentDate, ActivationDate, c),where 

    Category=an assigned value of relative category importance, 

    ServiceLevel=an assigned value of relative service criticality, 

    a′

    =a saturation scalar, 

    CurrentSaturation=a number of cars on a road at a given interval, 

    b′

    =activation date scalar, 

    CurrentDate=a current date, 

    ActivationDate=an activation date, and 

    c=a days out factor.

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