# US 2008/0186145 A1 · Method of cooperation between mobile and fixed rfid readers > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2008/0186145 A1 - Document ID: US20080186145A1 - Status: Published application - Kind: A1 - Application number: 11/671,147 - Filed: 2007-02-05 - Published: 2008-08-07 - Earliest claimed: 2007-02-05 - Assignees: Honeywell International Inc. - Inventors: Jathan W. Manley; Brian VanVoorst; Robert C. Becker - Web page: https://patentgrep.com/patent/US20080186145A1 ## CPC - G06K 17/0022: {arrangements or provisions for transferring data to distant stations, e.g. from a sensing device ("transfer between computer elements G06F13/00 "; data-transmission H04L)} - G06K 7/0008: {General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer} - G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS ## Abstract A system for communicating with RFID tags is disclosed. The system includes at least one RFID tag and a mobile RFID reader operable to interrogate the at least one RFID tag. The system also includes a first fixed RFID reader operable to interrogate the at least one RFID tag, the first fixed RFID reader configured to receive a request to interrogate the at least one RFID tag from the mobile RFID reader and configured to interrogate the at least one RFID tag based on the request from the mobile RFID reader. Additionally, the mobile RFID reader is configured to send a request to interrogate the at least one RFID tag to the first fixed RFID reader. ## Claims ### Claim 1 A method of communicating with an RFID tag at a fixed reader comprising: receiving a request to interrogate at least one tag on behalf of a mobile reader; and interrogating the at least one tag on behalf of the mobile reader. ### Claim 2 (depends on 1) The method of claim 1, further comprising: receiving at least one response from the at least one tag. ### Claim 3 (depends on 2) The method of claim 2, further comprising: forwarding the response to the mobile reader. ### Claim 4 (depends on 2) The method of claim 2, further comprising: receiving a second request from the mobile reader to process the at least one response from the at least one tag. ### Claim 5 (depends on 4) The method of claim 4, further comprising: processing the at least one response; and sending data obtained from the processing to the mobile reader. ### Claim 6 (depends on 1) The method of claim 1, further comprising: forwarding the request to interrogate at least one tag to at least one other fixed reader. ### Claim 7 (depends on 1) The method of claim 1, wherein the request is received on a first radio frequency channel and interrogating the at least one tag occurs on a second radio frequency channel. ### Claim 8 A system for communicating with RFID tags comprising: at least one RFID tag; a mobile RFID reader operable to interrogate the at least one RFID tag; a first fixed RFID reader operable to interrogate the at least one RFID tag, the first fixed RFID reader configured to receive a request to interrogate the at least one RFID tag from the mobile RFID reader and configured to interrogate the at least one RFID tag based on the request from the mobile RFID reader; and wherein the mobile RFID reader is configured to send a request to interrogate the at least one RFID tag to the first fixed RFID reader. ### Claim 9 (depends on 8) The system of claim 8, further comprising: a second fixed RFID reader operable to interrogate the at least one RFID tag, the second fixed RFID reader configured to receive a request to interrogate at least one tag from the first fixed RFID reader and configured to interrogate the at least one RFID tag based on the request; and wherein the first fixed RFID reader is configured to forward a request to interrogate the at least one RFID tag to the second fixed RFID reader. ### Claim 10 (depends on 8) The system of claim 8, wherein the mobile RFID reader further comprises: a transceiver operable to interrogate the at least one RFID tag on a first channel, and operable to send a request to the first fixed RFID reader on a second channel. ### Claim 11 (depends on 8) The system of claim 8, wherein the fixed RFID reader further comprises: a transceiver operable to interrogate the at least one RFID tag on a first channel, and operable to send a response to the mobile RFID reader on a second channel. ### Claim 12 (depends on 8) The system of claim 8, wherein the first fixed RFID reader further comprises: a processor operable to extract data from a response of the at least one RFID tag. ### Claim 13 A data storage device, characterized in that: the data storage device contains code which when executed by a processor implements a method of communicating with an RFID tag at a mobile reader comprising: sending a request to interrogate at least one tag to a fixed reader; and receiving at least one response to an interrogation based on the request. ### Claim 14 (depends on 13) The data storage device of claim 13, further characterized in that: the method comprises: sending a second request to the fixed reader, the second request requesting the fixed reader to process at least one response received at the fixed reader. ### Claim 15 (depends on 13) The data storage device of claim 13, further characterized in that: the method comprises: receiving data obtained from the processing from the fixed reader. ### Claim 16 (depends on 13) The data storage device of claim 13, further characterized in that: the method comprises: wherein receiving receives the at least one response from the at least one tag. ### Claim 17 (depends on 13) The data storage device of claim 13, further characterized in that: the method comprises: wherein receiving, receives the at least one response from the fixed reader. ### Claim 18 (depends on 17) The data storage device of claim 17, further characterized in that: the method comprises: receiving at least one other response from at least one other tag; and combining the at least one response from the fixed reader and the at least one other response from the at least one other tag. ### Claim 19 (depends on 13) The data storage device of claim 13, further characterized in that: the method comprises: wherein sending a request, sends a radio frequency transmission. ### Claim 20 (depends on 19) The data storage device of claim 19, further characterized in that: the method comprises: wherein sending a request, sends a radio frequency transmission on a first channel; and interrogating at least one other tag by radio frequency transmission on a second channel.