METHODS AND SYSTEMS FOR CONTROLLING OPERATIONS OF A MOBILE RADIO FREQUENCY READER BASED ON ITS LOCATION

• US 20090085743A1
• Filed: 09/28/2007
• Published: 04/02/2009
• Est. Priority Date: 09/28/2007
• Status: Abandoned Application

• Current Assignee: Symbol Technologies, Inc. (Zebra Technologies Corporation)
• Original Assignee: Symbol Technologies, Inc. (Zebra Technologies Corporation)
• Inventors: Malik, Ajay, Moghe, Shilpa, Ravi, Ranjith, Bhargava, Saurabh
• Application Number:
  US11/864,280
• Publication Number:
  US 20090085743A1
• Time in Patent Office: Days
• US Class Current: 340/572.100
• CPC Class Codes: G01S 5/0295 Proximity-based methods, e.g. position inferred from reception of particular signals
• 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

Abstract

Methods and systems are provided for controlling RF reader operations based the location of the RF reader. One method includes determining that the RF reader is located within a zone associated with an access level and enabling or disabling the RF reader based on the access level. A system includes multiple access ports (APs) defining multiple zones including an access level for the RF reader. The system also includes a switch configured to determine a present zone of the mobile RF reader and enabling the RF reader based on the access level of the present zone. Another system includes means for receiving a signal from an access port and means for determining a location of the RF reader based on the signal, the location associated with an access level. The system also includes means for enabling or disabling the RF reader based on the access level.

Claims

1. A method for controlling operations of a mobile radio frequency (RF) reader based on its location, the method comprising the steps of:

determining that the RF reader is located within a first zone of a plurality of zones, each zone associated with one of a plurality of access levels; and

enabling or disabling the RF reader based on a first access level of the first zone.

2. The method of claim 1, wherein the plurality of zones each include a plurality of access ports, the determining step comprising the steps of:

receiving a signal strength indicator from at least one of the plurality of access ports; and

determining that the mobile RF reader is located within the first zone based on each received signal strength indicator.

3. The method of claim 1, further comprising the step of monitoring movement of the mobile RF reader between the plurality of zones.

4. The method of claim 3, further comprising the steps of:

determining that the mobile RF reader is located within a second zone; and

enabling or disabling the mobile RF reader based on a second access level of the second zone.

5. The method of claim 3, further comprising the step of enabling or disabling the mobile RF reader within each zone based on a second access level associated with each respective zone.

6. The method of claim 1, wherein the enabling step comprises the step of enabling the mobile RF reader to read RF tags located within the first zone.

7. The method of claim 6, wherein the disabling step comprises the step of preventing the mobile RF reader from reading the RF tags.

8. A system for controlling a mobile radio frequency (RF) reader within a geographic area, comprising:

a plurality of access ports defining a plurality of zones within the geographic area, each zone assigned one of a plurality of access levels, each access port configured to receive data from the mobile RF reader; and

a switch communicatively coupled to each access port, wherein the switch is configured to;

determine a present zone of the mobile RF reader based on the data acquired from at least one of the plurality of access ports, and

enable the mobile RF reader based on the access level of the present zone.

9. The system of claim 8, wherein the switch is further configured to disable the mobile RF reader based on the access level of the present zone.

10. The system of claim 9, wherein the switch is configured to enable the mobile RF reader to read a RF tag located within a first zone when the switch enables the mobile RF reader.

11. The method of claim 10, wherein the switch is configured to prevent the mobile RF reader from reading the RF tag when the switch disables the mobile RF reader.

12. The system of claim 8, wherein the switch is further configured to:

receive a signal strength indicator from at least one of the plurality of access ports; and

determine that the mobile RF reader is located within the present zone based on each received signal strength indicator.

13. The method of claim 8, wherein the switch is further configured to monitor a movement of the mobile RF reader between the plurality of zones based on the data acquired from at least one of the plurality of access ports.

14. The method of claim 13, wherein the switch is further configured to:

determine that the mobile RF reader is located within a new zone; and

enable or disable the mobile RF reader based on the access level of the new zone.

15. The method of claim 13, wherein the switch is further configured to enable or disable the mobile RF reader within each zone based on the access level of each respective zone.

16. A radio frequency (RF) switch, comprising:

means for receiving a first signal from a first access port in communication with a mobile RF reader and the RF switch;

means for determining a first location of the mobile RF reader based on the first signal, the first location associated with a first access level; and

means for enabling or disabling the mobile RF reader based on the first access level.

17. The RF switch of claim 16, wherein the enabling means comprises means for enabling the mobile RF reader to read an RF tag within the location.

18. The RF switch of claim 17, wherein the disabling means comprises means for preventing the mobile RF reader from reading the RF tag.

19. The RF switch of claim 16, wherein the determining the first location means comprises means for receiving a signal strength indicator from the first access port.

20. The RF switch of claim 16, further comprising:

means for receiving a second signal from a second access port in communication with the mobile RF reader and the RF switch;

means for determining a second location of the mobile RF reader based on the second signal, the second location associated with a second access level for the mobile RF reader; and

means for enabling or disabling the mobile RF reader based on the second access level.