Method and system for site-based power management of radio frequency identification implementations
First Claim
Patent Images
1. A system for radio frequency identification (RFID) tag-based asset tracking comprising:
- one or more gateways, configured to create chatter in one or more gateway transmission ranges, wherein chatter comprises RFID communications, produced by chatter creating tags and chatter creating gateways, directed at a particular gateway or tag while still being heard, and acted upon, by gateways and tags that the chatter is not directed at;
a tag, located on an asset and operable in a plurality of states, configured toidentify the presence of chatter in a tag reception range; and
if chatter is identified by the tag, created by a chatter creating gateway that is one of the one or more gateways, then;
the tag enters a chatter present state.
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Abstract
A method and system for site based RFID power management is provided. The systems comprise one or more gateways, configured to create chatter in one or more gateway transmission ranges, a tag, located on an asset and operable in a plurality of states, configured to identify the presence of chatter in a tag reception range, and if chatter is identified by the tag, created by a chatter creating gateway that is one of the one or more gateways, then the tag enters a chatter present state.
9 Citations
14 Claims
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1. A system for radio frequency identification (RFID) tag-based asset tracking comprising:
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one or more gateways, configured to create chatter in one or more gateway transmission ranges, wherein chatter comprises RFID communications, produced by chatter creating tags and chatter creating gateways, directed at a particular gateway or tag while still being heard, and acted upon, by gateways and tags that the chatter is not directed at; a tag, located on an asset and operable in a plurality of states, configured to identify the presence of chatter in a tag reception range; and if chatter is identified by the tag, created by a chatter creating gateway that is one of the one or more gateways, then; the tag enters a chatter present state. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for a tag in an asset management system, able to operate in a plurality of states, comprising:
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listening for chatter, produced by one or more gateways that can produce chatter, within a tag reception range, wherein chatter comprises RFID communications, produced by chatter creating tags and chatter creating gateways, directed at a particular gateway or tag while still being heard, and acted upon, by gateways and tags that the chatter is not directed at; if chatter is heard; checking the chatter to determine if it is chatter for the tag; if the chatter is chatter for the tag; transmitting an acknowledgment signal to the chatter producing gateway; and entering a chatter present state; and if the chatter is not chatter for the tag; entering a sleep state.
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9. A system for radio frequency identification (RFID) tag-based asset tracking comprising:
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one or more gateways, configured to create chatter in one or more gateway transmission ranges, wherein chatter comprises RFID communications, produced by chatter creating tags and chatter creating gateways, directed at a particular gateway or tag while still being heard, and acted upon, by gateways and tags that the chatter is not directed at; one or more chatter creating tags, configured to create chatter in one or more tag transmission ranges; a tag, located on an asset and operable in a plurality of states, including a sleep state, and a listen state, configured to; identify the presence of chatter, from one of the one or more gateways or chatter creating tags, in a tag reception range while in the listen state; and if chatter is identified by the tag; receive an identifier, based on the identified chatter, and compare the identifier to a list of stored identifiers in a memory on the tag; and if the identifier is matched then the tag sends the asset'"'"'s status information; and if the identifier is not matched then the tag returns to the sleep state.
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10. A system for radio frequency identification (RFID) tag-based asset tracking comprising:
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one or more gateways, configured to create chatter in one or more gateway transmission ranges; one or more chatter creating tags, configured to create chatter in one or more tag transmission ranges; a tag, located on an asset and operable in a plurality of states, including a sleep state, and a listen state, configured to; identify the presence of chatter, from one of the one or more gateways or chatter creating tags, in a tag reception range while in the listen state; and if chatter is identified by the tag; receive an identifier, based on the identified chatter, and compare the identifier to a list of stored identifiers in a memory on the tag, wherein the list of stored identifiers comprises a subset of the one or more gateways that tag may communicate with; and if the identifier is matched then the tag sends the asset'"'"'s status information; and if the identifier is not matched then the tag returns to the sleep state. - View Dependent Claims (11, 12, 13)
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14. A system for radio frequency identification (RFID) tag-based asset tracking comprising:
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one or more chatter creating tags, configured to create chatter in one or more tag transmission ranges, wherein chatter comprises RFID communications, produced by chatter creating tags and chatter creating gateways, directed at a particular gateway or tag while still being heard, and acted upon, by gateways and tags that the chatter is not directed at; a tag, located on an asset and operable in a plurality of states, configured to identify the presence of chatter in a tag reception range; and if chatter is identified by the tag, created by one of the one or more chatter creating tags, then; the tag enters a chatter present state.
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Specification