METHOD AND SYSTEM FOR SITE-BASED POWER MANAGEMENT OF RADIO FREQUENCY IDENTIFICATION IMPLEMENTATIONS

• US 20150154841A1
• Filed: 12/03/2013
• Published: 06/04/2015
• Est. Priority Date: 12/03/2013
• Status: Active Grant

• Current Assignee: Trapeze Software ULC (Constellation Software Incorporated)
• Original Assignee: Trapeze Software ULC (Constellation Software Incorporated)
• Inventors: BARNES, Sharon Ann Irma, BROOKS, Marty Charles
• Granted Patent: US 9,898,908 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01V 15/00 Tags attached to, or associated with, an object, in order to enable detection of the object record carriers for use with machines having a detectable tag or marker G06K19/00
• CPC Class Codes: G06Q 10/08 Logistics, e.g. warehousing, loading or distribution; Inventory or stock management
• CPC Class Codes: G08B 13/2428 Tag details

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.

Claims

4-1. The system of claim 1, wherein the gateway transmission range of each of the one or more gateways and the tag reception range can be controlled \.

7. A method for a tag in an asset management system, able to operate in a plurality of states, comprising:

listening for chatter, produced by one or more gateways that can produce chatter, within a tag reception range;

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.

8. A method for operation of a gateway in an asset management system, configured to transmit chatter within a gateway transmission range, comprising:

transmitting chatter for a period of time;

listening for an acknowledgment signal from a tag;

if an acknowledgment signal is received from the tag, commencing communications with the tag.

9. The method of claim 8, where in the period of time is defined to be larger than an asset tag offsite minimum.

10. The method of claim 8 further comprising:

requesting a status information from the tag;

obtaining status information from the tag; and

passing the status information to a central management server.