Active RFID system for port logistics using multi-hop communication and communication method in the system
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United States of America Patent
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Jul 10, 2012
Grant Date -
Aug 5, 2010
app pub date -
Sep 24, 2009
filing date -
Feb 2, 2009
priority date (Note) -
Expired
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Abstract
Provided are an active radio frequency identification (RFID) system for port logistics and a communication method in the RFID system in which the forms of commands and response messages in the current standard are not changed in order to maintain compatibility with the current standard and to support multi-hop communication and some fields that are not generally used are used so as to enable communication between a tag in a shadow area and a reader by multi-hop communication using other surrounding tags.
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