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Method and apparatus reporting a vehicular sensor waveform in a wireless vehicular sensor network

  • US 7,739,000 B2
  • Filed: 06/27/2005
  • Issued: 06/15/2010
  • Est. Priority Date: 03/01/2004
  • Status: Expired due to Fees
First Claim
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1. A method for responding to the presence of a vehicle comprising the step of:

  • operating a wireless vehicular sensor network (1600) comprising the steps of;

    operating at least one wireless vehicular sensor node (500) responding to said presence of said vehicle (6) in said wireless vehicular sensor network, comprising the steps of;

    using a vehicle sensor state (104) from a vehicular sensor (2) to create a vehicular sensor waveform (106) based upon said presence of said vehicle by updating a vehicle sensor state queue with said vehicle sensor state, deriving said vehicular sensor waveform from said vehicle sensor state queue, determining a change-in-presence of said vehicle based upon said vehicle sensor state queue, and updating a waveform queue with a waveform characteristic when said change-in-presence is indicated;

    generating a report (130) including at least two waveform characteristic (120) of at least two of said vehicular sensor waveform by assembling said report from said waveform queue, and indicating report members of said waveform queue; and

    operating a transmitter (22) in a transceiver (20) to send said report across at least one wireless physical transport (1510) to an access point (1500) included said wireless vehicular sensor network, to approximate said vehicular sensor waveform at said access point; and

    operating said access point, comprising the steps;

    operating a receiver in a second transceiver (1020) to receive said report; and

    deriving a vehicle velocity estimate (1054) for at least one of said vehicle from said report.

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