Power efficient wireless RF communication between a base station and a medical device

• US 9,986,505 B2
• Filed: 06/19/2017
• Issued: 05/29/2018
• Est. Priority Date: 04/06/2011
• Status: Active Grant

• Current Assignee: TC1 LLC (Abbott Laboratories)
• Original Assignee: St Jude Medical Luxembourg Holding SMI SARL (Abbott Laboratories)
• Inventors: Pixley, April C., Campbell, Cary W R, Brandon, Steven T.
• Primary Examiner(s): Gesesse, Tilahun B
• Application Number:
  US15/627,130
• Publication Number:
  US 20170295542A1
• Time in Patent Office: 344 Days
• Field of Search: 455522, 455517
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 76/28 Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: H04W 88/08 Access point devices
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Specific embodiments of the present invention are for use by a base station (BS) that enables power efficient wireless radio frequency (RF) communication between the BS and a medical device (MD), which may or may not be an implantable medical device (IMD). In an embodiment, once a communication session is established between the BS and the MD, the BS selectively turns a drop link mode on and off. The drop link mode is a communication mode that while turned on (i.e., enabled) reduces and preferably minimizes the length of time that an RF link is maintained between the BS and the MD. In accordance with an embodiment, at any given time during a communication session the drop link mode is either turned on (i.e., enabled) or turned off (i.e., disabled).

Claims

1. A method for use by a base station (BS) that communicates with a medical device (MD), the method for conserving power of the MD during a communication session established between the BS and the MD, the method comprising:

enabling a drop link mode during the communication session between the BS and the MD when the BS will not send another command to the MD until the BS receives an input from a user via a user interface of the BS;

while the drop link mode is enabled during the communication session between the BS and the MD, establishing a radio frequency (RF) link between the BS and the MD when the BS is to send a command to the MD, and terminating the RF link between the BS and the MD as soon as or within a predetermined amount of time after the BS receives a command response from the MD, wherein each said RF link comprises a wireless communication path established between the BS and the MD that enables data to be wirelessly transmitted therebetween;

disabling the drop link mode when the BS is to send a command to the MD in response to which the BS will receive multiple command responses from the MD; and

while the drop link mode is disabled during the communication session between the BS and the MD, maintaining an already established RF link between the BS and the MD by transmitting one or more link maintenance messages from the BS to the MD.

2. The method of claim 1, further comprising, after disabling the drop link mode, and after receiving at the BS the multiple command responses from the MD, enabling the drop link mode and terminating the already established RF link.

3. The method of claim 1, further comprising also disabling the drop link mode when the BS is to send multiple commands to the MD.

4. The method of claim 3, further comprising after disabling the drop link mode, and after sending the multiple commands from the BS to the MD, enabling the drop link mode and terminating the already established RF link.

5. The method of claim 1, further comprising also enabling the drop link mode when the BS is to send a single command to the MD in response to which the BS will receive a single command response from the MD.

6. The method of claim 1, further comprising also enabling the drop link mode when the BS will not send another command to the MD within a predetermined amount of time.

7. The method of claim 1, further comprising terminating the already established RF link between the BS and the MD in response to the BS enabling the drop link mode.

8. The method of claim 1, further comprising terminating the already established RF link between the BS and the MD in response to the BS executing an instruction to terminate the already established RF link.

9. The method of claim 1, further comprising terminating the already established RF link between the BS and the MD in response to the BS not receiving a link maintenance message or a command response from the MD for a link time-out period.

10. The method of claim 1, further comprising:

establishing the communication session between the BS and the MD in response to at least one of accepting a selection of a predetermined input from a user of the BS that indicates that the user wants the BS to communicate with the MD, determining that a predetermined interval has passed since a most recent communication session, or determining that a predetermined triggering event has occurred; and

terminating the communication session between the BS and the MD in response to at least one of accepting a selection of a predetermined input from a user of the BS that indicates that the user no longer wants the BS to communicate with the MD, or determining that no command has been sent from the BS to the MD within a time out period.

11. A base station (BS), comprising:

a controller configured to establish a communication session with a medical device (MD);

a user interface configured to accept one or more inputs from a user during the communication session with the MD;

an RF transceiver communicatively coupled to the controller and configured to selectively establish a radio frequency (RF) link with an RF transceiver of a medical device (MD) during the communication session between the BS and the MD, wherein each said RF link comprises a wireless communication path established between the BS and the MD that enables data to be wirelessly transmitted therebetween;

the controller also configured to enable a drop link mode when the BS will not send another command to the MD until the BS receives an input from a user via the user interface of the BS;

wherein while the drop link mode is enabled during the communication session between the BS and the MD, the controller controls the RF transceiver to establish a new RF link between the BS and the MD when the BS is to send a command to the MD, and the controller controls the RF transceiver to terminate the new RF link between the BS and the MD as soon as or within a predetermined amount of time after the BS receives a command response from the MD;

the controller also configured to disable the drop link mode when the BS is to send a command to the MD in response to which the BS will receive multiple command responses from the MD; and

wherein while the drop link mode is disabled during the communication session between the BS and the MD, the controller controls the RF transceiver to maintain an already established RF link between the BS and the MD by transmitting one or more link maintenance messages from the BS to the MD.

12. The BS of claim 11, wherein while the drop link mode is enabled, an average total amount of time from establishing the new RF link to terminating the new RF link is less than one second.

13. The BS of claim 11, wherein the controller is also configured to disable the drop link mode when the BS is to send multiple commands to the MD.

14. The BS of claim 11, wherein the controller is also configured to enable the drop link mode when the BS is to send a single command to the MD in response to which the BS will receive a single command response from the MD.

15. The BS of claim 11, wherein the controller is also configured to enable the drop link mode when the BS will not send another command to the MD within a predetermined amount of time.

16. The BS of claim 11, wherein the controller is also configured to terminate the already established RF link between the BS and the MD in response to at least one of:

the BS enabling the drop link mode, the BS executing an instruction to terminate the already established RF link, or the BS not receiving a link maintenance message or a command response from the MD for a link time-out period.

17. The BS of claim 11, wherein the controller is also configured:

establish the communication session between the BS and the MD in response to a first predetermined input being accepted via the user interface of the BS that indicates that a user wants the BS to communicate with the MD; and

terminate the communication session between the BS and the MD in response to at least one of;

a second predetermined input being accepted via the user interface of the BS that indicates that the user no longer wants the BS to communicate with the MD, or no command being sent from the BS to the MD within a specified time out period.

18. A method for use by a base station (BS) that communicates with a medical device (MD), the method for conserving power of the MD, the method comprising:

establishing a communication session between the BS and the MD in response to accepting a predetermined input from a user of the BS that indicates that the user wants the BS to communicate with the MD;

selectively enabling and disabling a drop link mode during the communication session between the BS and the MD, wherein the selectively enabling and disabling the drop link mode includes;

enabling the drop link mode when the BS is to send a single command to the MD in response to which the BS will receive a single command response from the MD; and

disabling the drop link mode when the BS is to send a command to the MD in response to which the BS will receive multiple command responses from the MD;

while the drop link mode is enabled during the communication session between the BS and the MD, establishing a radio frequency (RF) link between the BS and the MD when the BS is to send a command to the MD, and terminating the RF link between the BS and the MD as soon as or within a predetermined amount of time after the BS receives a command response from the MD;

while the drop link mode is disabled during the communication session between the BS and the MD, transmitting one or more link maintenance messages from the BS to the MD to thereby maintain an already established RF link between the BS and the MD by; and

terminating the communication session between the BS and the MD in response to accepting a predetermined input from a user of the BS that indicates that the user no longer wants the BS to communicate with the MD.

19. The method of claim 18, wherein the selectively enabling and disabling the drop link mode also includes at least one of:

enabling the drop link mode when the BS will not send another command to the MD until the BS receives an input from a user via a user interface of the BS;

or enabling the drop link mode when the BS will not send another command to the MD within a predetermined amount of time.

20. The method of claim 18, wherein the selectively enabling and disabling the drop link mode also includes disabling the drop link mode when the BS is to send multiple commands to the MD.