Keep alive periodicity determination for WiFi networks

• US 9,504,026 B2
• Filed: 12/13/2012
• Issued: 11/22/2016
• Est. Priority Date: 12/13/2012
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Technologies Oy (Nokia Corporation)
• Inventors: Bajko, Gabor
• Primary Examiner(s): Kizou, Hassan
• Assistant Examiner(s): FARAHMAND, ASHIL S
• Application Number:
  US13/714,366
• Publication Number:
  US 20140169338A1
• Time in Patent Office: 1,440 Days
• Field of Search: 370/248, 370/310
• US Class Current: 1/1
• CPC Class Codes: H04L 67/145 avoiding end of session, e.g. keep-alive, heartbeats, resumption message or wake-up for inactive or interrupted session
• CPC Class Codes: H04L 69/28 Timers or timing mechanisms used in protocols
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 76/25 Maintenance of established connections
• CPC Class Codes: H04W 76/38 triggered by timers

Abstract

Methods and apparatus, including computer program products, are provided for keep alive messages. In one aspect there is provided a method. The method may include receiving, at a user equipment, an indicator sent by a wireless access point, wherein the indicator represents a time to send at least one keep alive message to enable maintenance of at least one binding in at least one intermediate node; and generating, by the user equipment, the at least one keep alive message. Related apparatus, systems, methods, and articles are also described.

Claims

1. A method, comprising:

receiving, at a user equipment, an indicator determined by a wireless access point, wherein the indicator represents a keep alive period to send at least one keep alive message to enable maintenance of at least one binding in at least one intermediate node;

determining, by the user equipment and based on the received indication and an idle time, a timing for sending the at least one keep alive message, wherein the idle time represents a predetermined time during which the wireless access point will disassociate with the user equipment if the user equipment has not sent a transmission to the access point; and

transmitting, by the user equipment and according to the determined timing, the at least one keep alive message to the wireless access point.

2. The method of claim 1, wherein the receiving further comprises:

receiving the indicator from a beacon transmitted by a wireless access point.

3. The method of claim 1, wherein transmitting the at least one keep alive message maintains the at least one binding in the at least one intermediate node.

4. The method of claim 1, wherein the binding maintains at least one of a transmission control protocol connection or a user datagram protocol connection between the user equipment and a device.

5. The method of claim 1 further comprising:

waiting, by the user equipment and based on the received indicator and the idle time, to transmit the at least one keep alive message, wherein transmitting the at last one keep alive message enables an association between the user equipment and the wireless access point to be maintained at the wireless access point.

6. The method of claim 1, wherein the wireless access point comprises a WiFi wireless access point.

7. The method of claim 1, wherein the indicator is received as a message from the wireless access point.

8. An apparatus comprising:

at least one processor; and

at least one memory including computer program code for one or more programs, the at least one processor, the at least one memory, and the computer program code configured to cause the apparatus to at least;

receive an indicator determined by a wireless access point, wherein the indicator represents a keep alive period to send at least one keep alive message to enable maintenance of at least one binding in at least one intermediate node;

determine, based on the received indication and an idle time, a timing for sending the at least one keep alive message, wherein the idle time represents a predetermined time during which the wireless access point will disassociate with the apparatus if the apparatus has not sent a transmission to the access point; and

transmit, according to the determined timing, the at least one keep alive message to the wireless access point.

9. The apparatus of claim 8 further configured to at least receive the indicator from a beacon transmitted by a wireless access point.

10. The apparatus of claim 8, wherein transmitting the the at least one keep alive message maintains the at least one binding in the at least one intermediate node.

11. The apparatus of claim 8, wherein the binding maintains at least one of a transmission control protocol connection or a user datagram protocol connection between the apparatus and a device.

12. The apparatus of claim 8 further configured to at least wait, based on the received indicator and the idle time, to transmit the at least one keep alive message, wherein the transmitting the at least one keep alive message enables an association between the apparatus and the wireless access point to be maintained at the wireless access point.

13. The apparatus of claim 8, wherein the wireless access point comprises a WiFi wireless access point, and wherein the apparatus comprises a user equipment.

14. A non-transitory computer-readable medium encoded with instructions that, when executed by a processor, perform at least the following:

receiving, at a user equipment, an indicator determined by a wireless access point, wherein the indicator represents a keep alive period to send at least one keep alive message to enable maintenance of at least one binding in at least one intermediate node;

determining, by the user equipment and based on the received indication and an idle time, a timing for sending the at least one keep alive message, wherein the idle time represents a predetermined time during which the wireless access point will disassociate with the user equipment if the user equipment has not sent a transmission to the access point; and

transmitting, by the user equipment and according to the determined timing, the at least one keep alive message to the wireless access point.

15. The non-transitory computer-readable medium of claim 14, wherein transmitting the at least one keep alive message maintains the at least one binding in the at least one intermediate node.

16. The non-transitory computer-readable medium of claim 14, wherein the receiving further comprises:

receiving the indicator from a beacon transmitted by a wireless access point.