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Mobile tag tracking system

A mobile tag and tracking system technology, applied in the field of radio frequency communication, can solve problems such as release, error alarm, and delay detection

Active Publication Date: 2011-09-21
BLACKBERRY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the tolerance is set too short, many normal blockages will trigger false alarms, whereas if the tolerance is set too long, intentional blockages may be considered to occur naturally and detection may be dismissed or at least delayed

Method used

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Examples

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Embodiment Construction

[0016] A method and apparatus are provided for automatic notification of loss, damage or theft using the communication capabilities of a network and radio frequency equipped tags on moving objects, such as vehicles or shipping containers. The methods and apparatus do not require constant or frequent communication with tags. Conventionally, surveillance tags report information about protected objects using continuous or near-continuous transmissions in order to minimize the possibility of theft or damage in the time interval between transmissions. Since objects sometimes naturally fall out of communication range (for example, in tunnels or buildings), true continuous communication is generally not possible, and such continuous or frequent transmissions also occupy too much precious radio frequency spectrum and quickly drains the tag's battery life. The method and apparatus establish a random or pseudo-random, time-sequential and authenticated transmission schedule for communic...

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Abstract

A mobile tag tracking system for providing mobile security monitoring is provided. The system includes a communications facility, a communications network coupled to the communications facility, and a mobile tag. The mobile tag is coupled to an item to be monitored. The mobile tag has a processor having a memory and for controlling operation of the mobile tag, a radio communications component coupled to the processor for communicating with the communications facility over the communications network for reporting status messages related to the item, a power supply coupled to the processor for providing power to the mobile tag, security sequence generator coupled to the processor for generating binary sequences, a location tracking component coupled to the processor for determining the location of the mobile tag and providing a location signal to the processor, and a clock coupled to the processor. The mobile tag communicates with the communications facility using randomly scheduled communications each including a status message.

Description

technical field [0001] The present disclosure relates generally to radio frequency communications, and more particularly to mobile tag tracking systems. Background technique [0002] Conventional methods of monitoring tags on moving objects, such as shipping containers, use frequent transmissions to report "everything is OK" messages to a security monitoring center. With this setup, the Security Center can detect an alarm condition by receiving an alarm message from the tag, or by not receiving an "everything is OK" message. Thieves can easily circumvent the protection provided by this conventional method by blocking the radio frequency transmission of the warning message, such as by moving the object and its tag into a tunnel or building. In addition, thieves can replay previously recorded "everything is fine" transmissions to confuse the Security Center into thinking that everything is fine. Even without rebroadcasting the "everything is fine" signal, a burglar can at le...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/02H04L9/00H04W12/00H04W12/06H04W74/08G01V3/12
CPCG06Q10/0833G06Q10/08H04W4/02H04W64/00H04W74/08H04L9/0656
Inventor D·斯蒂尔
Owner BLACKBERRY LTD