Methods and apparatus for operating a radio device

• US 7,075,412 B1
• Filed: 05/29/2003
• Issued: 07/11/2006
• Est. Priority Date: 05/30/2002
• Status: Active Grant

• Current Assignee: Novanta Corporation (Novanta Inc.)
• Original Assignee: Thingmagic, LLC
• Inventors: Reynolds, Matthew S., Tsai, Harry F., Richards, Joseph L., Pathare, Sumukh N., Post, E. Rehmatulla, Pappu, Ravikanth S., Schoner, Bernd, Maguire, Yael G.
• Primary Examiner(s): Zimmerman, Brian
• Assistant Examiner(s): Yang, Clara
• Application Number:
  US10/448,053
• Time in Patent Office: 1,139 Days
• Field of Search: 340/10.2, 340/10.3, 340/10.31
• US Class Current: 340/10.2
• CPC Class Codes: G06K 7/0008 General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
• CPC Class Codes: G06K 7/10297 arrangements for handling protocols designed for non-contact record carriers such as RFIDs NFCs, e.g. ISO/IEC 14443 and 18092 cryptographic protocols H04L9/00; network security protocols H04L63/00; real-time communication protocols in data switching networks H04L65/00; network protocols for data switching network services H04L67/00

Abstract

A radio device such as a wireless tag reader communicates with multiple types of wireless identification tags in a monitored region. The radio device includes a network interface to receive messages transmitted over a network. In response to receiving a message indicating to reconfigure the radio device to support an additional wireless tag protocol, the radio is reconfigured to support communications with a corresponding new type of wireless identification tag in a monitored region. Based on this technique of reconfiguring the radio device via network messages, the radio device optionally supports additional, new or latest versions of wireless tag protocols without having to physically reprogram or replace the radio device.

Claims

1. A method of operating a wireless transceiver device that communicates with wireless identification tags, the method comprising:

communicating with multiple types of wireless identification tags in a monitored region based on use of a corresponding set of wireless communication protocols;

at the wireless transceiver device, receiving a message transmitted over a network;

in response to receiving the message, reconfiguring the wireless transceiver device to support a new protocol for communicating with a corresponding type of wireless identification tag in the monitored region;

partitioning at least two of the multiple types of wireless communication protocols that are used to communicate with wireless identification tags; and

interleaving portions of the partitioned protocols to communicate with multiple types of wireless identification tags.

2. A method as in claim 1 further comprising:

at the wireless transceiver device, at least occasionally performing a query to determine a presence of each type of wireless identification tag in the monitored region; and

for the identified types of wireless identification tags in the monitored region, scheduling additional wireless communications directed to detected types of wireless identification tags in the monitored region.

3. A method as in claim 1 further comprising:

at the wireless transceiver device, collecting information related to the wireless identification tags; and

storing the information in a database at the wireless transceiver device, the database of the wireless transceiver device forming part of an overall hierarchical database distributed over the network.

4. A method as in claim 1, wherein communicating with multiple types of wireless identification tags includes:

generating wireless signals over multiple carrier frequencies.

5. A method as in claim 4, wherein generating wireless signals includes:

generating wireless signals from the wireless device at different carrier frequencies but utilizing a common baseband to receive data information from the wireless identification tags.

6. A method as in claim 4, wherein generating wireless signals includes:

generating wireless signals from the wireless device at different carrier frequencies but utilizing a common intermediate frequency to receive data information from the wireless identification tags.

7. A method as in claim 1, wherein generating wireless signals includes:

simultaneously generating wireless signals from the wireless transceiver device at different carrier frequencies to communicate with at least two different types of wireless identification tags at the same time.

8. A method as in claim 1, wherein communicating with multiple types of wireless identification tags includes:

powering the different types of wireless identification tags via wireless signals generated by the wireless transceiver device.

9. A method as in claim 1 further comprising:

processing the message received over the network and reprogramming a digital signal processor of the wireless transceiver device to support wireless communications with the new protocol.

10. A method of operating a radio device that communicates with wireless identification tags, the method comprising:

communicating with multiple types of wireless identification tags in a monitored region based on use of a corresponding set of radio communication protocols;

interleaving portions of the radio communications associated with the multiple types of protocols to communicate with the multiple types of wireless identification tags.

11. A method as in claim 10, wherein interleaving portions of the radio communications includes:

randomly scheduling portions of the radio communications for each of different protocols.

12. A method as in claim 10, wherein interleaving portions of the radio communications includes:

scheduling portions of the radio communications for each of different protocols in a round robin fashion.

13. A method as in claim 10, wherein interleaving portions of the radio communications includes:

selectively scheduling portions of the radio communications to allocate more time for servicing one protocol over another.

14. A method as in claim 10, wherein interleaving portions of the radio communications includes:

introducing a period of time including no wireless transmissions from the radio device to wireless identification tags in the monitored region.

15. A method as in claim 10, wherein interleaving portions of the radio communications includes:

changing an operating frequency to improve interoperability among multiple wireless devices simultaneously communicating in a common area.

16. A method as in claim 10, wherein interleaving portions of the radio communications from the radio device includes:

identifying redundant portions of the radio communications; and

scheduling non-redundant portions of the radio communications to communicate with multiple types of wireless identification tags.

17. A method as in claim 10, wherein interleaving portions of the radio communications from the radio device includes:

based on a set of scheduling rules, identifying an acceptable order of scheduling the portions of radio communications associated with the set of radio protocols; and

scheduling the portions of radio communications according to the acceptable order.

18. A method as in claim 10 further comprising:

at the radio device, collecting information related to the wireless identification tags; and

storing the information in a database at the radio device, the database of the radio device forming part of a hierarchical database distributed over the network.

19. A method as in claim 10, wherein interleaving portions of the radio communications from the radio device includes:

scheduling portions of the radio communications based on priority to more frequently check a presence of a certain type of wireless identification tags in the monitored region.

20. A method of selectively providing data information associated with a radio device that monitors a presence of wireless identification tags, the method comprising:

monitoring the presence of wireless identification tags based on utilization of multiple types of wireless communication protocols;

at the radio device, receiving a network message including an agent generated by a source at a remote location;

executing the agent at the radio device; and

in response to satisfying a condition of the agent, transmitting messages over the network to report data information associated with the radio device back to the source; and

wherein monitoring the presence of the wireless identification tags includes;

i) partitioning at least two of the multiple types of wireless communication protocols that are used to communicate with wireless identification tags, and ii) interleaving portions of the partitioned protocols to communicate with multiple types of wireless identification tags.

21. A method as in claim 20 further comprising:

executing multiple agents received from multiple sources at different remote locations relative to the radio device, each of the multiple agents having an associated function for retrieving particular information from a database associated with the radio device that stores wireless identification tag information.

22. A method as in claim 20 further comprising:

as a result of executing the agent at the radio device, filtering data information associated with the wireless identification tags that would otherwise be sent back to the source.

23. A system to communicate with wireless identification tags, the system comprising:

a wireless transceiver device to communicate with multiple types of wireless identification tags in a region based on use of a corresponding set of radio communication protocols;

a network interface to receive a message transmitted over a network;

a processor that, in response to receiving the message over the network, reconfigures the wireless transceiver device to support a new protocol for communicating with a corresponding type of wireless identification tag in a monitored region; and

an interleaver that interleaves portions of the radio communication protocols to communicate with the multiple types of wireless identification tags in the monitored region.

24. A system as in claim 23, wherein the wireless transceiver device includes a scheduler that at least occasionally performs a query to determine a presence of each type of wireless identification tag in the monitored region, the scheduler scheduling radio communications to further identify particular data about the types of wireless identification tags detected in the monitored region.

25. A system as in claim 23, further comprising:

a database to store information collected as a result of communicating with the corresponding set of radio communication protocols, the database being part of an overall hierarchical database distributed over the network.

26. A system as in claim 23, wherein the wireless transceiver device communicates with multiple types of wireless identification tags by generating wireless signals over multiple carrier frequencies.

27. A system as in claim 26, wherein the transceiver device generates wireless signals at different carrier frequencies to simultaneously communicate with at least two different types of wireless identification tags at the same time.

28. A system as in claim 26, wherein transceiver device generates wireless signals at different carrier frequencies but receives data from multiple type of wireless identification tags based on a common baseband frequency.

29. A system as in claim 28, wherein transceiver device generates wireless signals at different carrier frequencies but receives data from multiple type of wireless identification tags based on a common intermediate frequency.

30. A system to communicate with wireless identification tags, the system comprising:

a wireless transceiver device that communicates with multiple types of wireless identification tags in a region based on use of a corresponding set of radio communication protocols, the wireless transceiver including;

a scheduler to schedule radio communications associated with the corresponding set of radio communication protocols; and

an interleaver that interleaves portions of scheduled radio communications associated with the set of radio communication protocols to communicate with the multiple types of wireless identification tags.

31. A system as in claim 30, wherein the scheduler randomly interleaves portions of the radio communications for each of the multiple types of wireless identification tags.

32. A system as in claim 30, wherein the scheduler interleaves portions of the radio communications for each of different protocols in a round robin fashion.

33. A system as in claim 30, wherein the scheduler, under direct user control, selectively schedules the portions of radio communications to allocate more scheduling time for one particular type of protocol than another.

34. A system as in claim 30, wherein the scheduler, under control of a software agent, selectively schedules the portions of radio communications to allocate more scheduling time for one particular type of protocol than another.

35. A system as in claim 30, wherein the scheduler identifies redundant portions of the radio communications and optimizes by scheduling only non-redundant portions of the radio communications.

36. A system as in claim 30, wherein the scheduler identifies interfering portions of the radio communications and optimizes by scheduling only non-interfering portions of the radio communications.

37. A system as in claim 30, wherein operations by the scheduler include monitoring wireless signal characteristics to reduce interference with other wireless communication devices sharing a common area.

38. A system as in claim 37, wherein the monitored wireless signal characteristics include channel occupancy.

39. A system as in claim 30 further comprising:

a database that stores collected information related to the wireless identification tags in the monitored region, wherein the database is part of a hierarchical database distributed over the network.

40. A system as in claim 30, wherein the scheduler schedules portions of the radio communications based on priority to more frequently check a presence of a certain type of wireless identification tags in the monitored region.

41. A radio device to monitor the presence of wireless identification tags in a region, the radio device comprising:

a network interface to receive an agent generated by a source at a remote location;

a processor to execute the agent, the processor reporting data information associated with the wireless identification tags back to the source in response to executing instructions associated with the agent; and

an interleaver that interleaves portions of multiple different types of radio communication protocols to communicate with corresponding different types of wireless identification tags in the region.

42. A radio device as in claim 41, wherein the processor executes multiple agents received from multiple sources at different remote locations relative to the radio device, each of the multiple agents having an associated function for retrieving particular information from a database associated with the radio device that stores wireless identification tag information.

43. A radio device as in claim 41, wherein the processor, in response to executing an agent, filters data information associated with the wireless identification tags that would be otherwise transmitted back to the source.

44. A system to communicate with wireless identification tags, the system comprising:

means for communicating with multiple types of wireless identification tags in a region based on use of a corresponding set of radio communication protocols;

a network interface to receive a message transmitted over a network;

means for supporting at least one additional protocol for communicating with a corresponding type of wireless identification tag in a monitored region in response to receiving the message over the network;

means for partitioning at least two of the multiple types of wireless communication protocols that are used to communicate with wireless identification tags; and

means for interleaving portions of the partitioned protocols to communicate with multiple types of wireless identification tags.

45. A computer program product including a computer-readable medium having instructions stored thereon for processing data information, such that the instructions, when carried out by a processing device, enable the processing device to perform the steps of:

communicating with multiple types of wireless identification tags in a monitored region based on use of a corresponding set of wireless communication protocols;

at the wireless transceiver device, receiving a message transmitted over a network;

in response to receiving the message, reconfiguring the wireless transceiver device to support at least one additional protocol for communicating with a corresponding type of wireless identification tag in the monitored region;

partitioning at least two of the multiple types of wireless communication protocols that are used to communicate with wireless identification tags; and

interleaving portions of the partitioned protocols to communicate with multiple types of wireless identification tags.