VARIABLE PLAYBACK RATE OF STREAMING CONTENT FOR UNINTERRUPTED HANDOVER IN A COMMUNICATION SYSTEM

• US 20200137649A1
• Filed: 12/20/2019
• Published: 04/30/2020
• Est. Priority Date: 07/14/2016
• Status: Active Grant

• Current Assignee: ViaSat Incorporated
• Original Assignee: ViaSat Incorporated
• Inventors: SLEIGHT, Brian T.
• Granted Patent: US 11,490,305 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 65/61 for supporting one-way streaming services, e.g. Internet radio
• CPC Class Codes: H04L 65/764 at the destination reformatting of additional data in video clients H04N21/4355
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04N 21/2187 Live feed
• CPC Class Codes: H04N 21/41422 located in transportation means, e.g. personal vehicle arrangements specially adapted for transportation systems in broadcast systems H04H20/62
• CPC Class Codes: H04N 21/482 End-user interface for program selection broadcast systems using EPGs H04H60/72
• CPC Class Codes: H04W 36/0011 for data sessions of end-to-end connection
• CPC Class Codes: H04W 36/023 Buffering or recovering information during reselection
• CPC Class Codes: H04W 84/06 Airborne or Satellite Networks space-based or airborne stations H04B7/185

Abstract

Embodiments relate to systems and methods for modifying the playback rate of media data in order to improve craft-based media playback system performance during handover events in a communication system.

Claims

1. A method for providing media content to a media client on a craft, comprising:

initiating, at a media playback system of the craft, a first streaming media session with a remote content server using a first communication link;

receiving, at the media playback system of the craft, linear media data associated with the first streaming media session at a first transmission rate over the first communication link, the linear media data comprising a stream of content that is scheduled for delivery at a certain time;

buffering the linear media data associated with the first streaming media session in a media buffer of the media playback system at a first buffer size;

providing the buffered linear media data associated with the first streaming media session from the media buffer for consumption on the media client at a first media playback rate;

prior to an expected link transition initiation time, increasing buffering of the received linear media data in the media buffer from the first buffer size to a second buffer size by providing the buffered linear media data associated with the first streaming media session from the media buffer for consumption on the media client at a second media playback rate while maintaining the first transmission rate, the second media playback rate being lower than the first media playback rate; and

providing, during a link transition time associated with the expected link transition initiation time, at least a portion of the buffered linear media data associated with the first streaming media session from the media buffer for consumption on the media client.

2. The method of claim 1, further comprising:

initiating, at the media playback system of the craft, a second streaming media session with the remote content server using a second communication link;

receiving linear media data associated with the second streaming media session at a second transmission rate, the linear media data comprising the stream of the content that is scheduled for delivery at a certain time;

buffering the linear media data associated with the second streaming media session in the media buffer; and

providing buffered linear media data associated with the second streaming media session from the media buffer for consumption on the media client at the first media playback rate.

3. The method of claim 1, wherein the second media playback rate is at less than or equal to 10% lower than the first media playback rate.

4. The method of claim 2, further comprising:

prior to providing the buffered linear media data associated with the second streaming media session from the media buffer for consumption on the media client at the first media playback rate, providing the buffered linear media data associated with the second streaming media session from the media buffer for consumption on the media client at a third media playback rate, the third media playback rate being higher than the first media playback rate.

5. The method of claim 1, wherein the second media playback rate is such that that the media buffer will not be depleted during the link transition time.

6. The method of claim 1, wherein the first communication link is a first satellite communication link.

7. The method of claim 2, wherein the second communication link is a second satellite communication link.

8. The method of claim 7, wherein the second communication link is an air-to-ground communication link.

9. The method of claim 1, further comprising:

determining the expected link transition initiation time between the first communication link and a second communication link.

10. The method of claim 1, further comprising:

determining an expected link transition duration between the first communication link and a second communication link; and

determining the second media playback rate based on the expected link transition initiation time and the expected link transition duration.

11. A system for providing media content to a media client on a craft, comprising:

a memory comprising computer-executable code;

a media buffer of a media playback system of the craft;

a transceiver;

at least one processor in data communication with the media buffer, the transceiver, and the memory, and configured to execute the computer-executable code and cause the system to;

initiate a first streaming media session with a remote content server via the transceiver using a first communication link;

receive, via the transceiver, linear media data associated with the first streaming media session at a first transmission rate over the first communication link, the linear media data comprising a stream of content that is scheduled for delivery at a certain time;

buffer the linear media data associated with the first streaming media session in the media buffer at a first buffer size;

provide buffered linear media data associated with the first streaming media session from the media buffer for consumption on the media client at a first media playback rate;

prior to an expected link transition initiation time, increase buffering of the received linear media data in the media buffer from the first buffer size to a second buffer size by providing the buffered linear media data associated with the first streaming media session from the media buffer for consumption on the media client at a second media playback rate while maintaining the first transmission rate, the second media playback rate being lower than the first media playback rate; and

provide, during a link transition time associated with the expected link transition initiation time, at least a portion of the buffered linear media data associated with the first streaming media session from the media buffer for consumption on the media client.

12. The system of claim 11, wherein the processor is further configured to cause the system to:

initiate, at the media playback system of the craft, a second streaming media session with the remote content server via the transceiver using a second communication link;

receive, via the transceiver, linear media data associated with the second streaming media session at a second transmission rate, the linear media data comprising the stream of the content that is scheduled for delivery at a certain time;

buffer the linear media data associated with the second streaming media session in the media buffer; and

provide buffered linear media data associated with the second streaming media session from the media buffer for consumption on the media client at the first media playback rate.

13. The system of claim 11, wherein the second media playback rate is at less than or equal to 10% lower than the first media playback rate.

14. The system of claim 12, wherein the processor is further configured to cause the system to:

prior to providing the buffered linear media data associated with the second streaming media session from the media buffer for consumption on the media client at the first playback rate, provide the buffered linear media data associated with the second streaming media session from the media buffer for consumption on the media client at a third media playback rate, the third media playback rate being higher than the first media playback rate.

15. The system of claim 11, wherein the second media playback rate is configured so that the media buffer will not be depleted during the link transition time.

16. The system of claim 11, wherein the first communication link is a first satellite communication link.

17. The system of claim 12, wherein the second communication link is a second satellite communication link.

18. The system of claim 17, wherein the second communication link is an air-to-ground communication link.

19. The system of claim 11, wherein the processor is further configured to cause the system to:

determine the expected link transition initiation time between the first communication link and a second communication link.

20. The system of claim 11, wherein the processor is further configured to cause the system to:

determine an expected link transition duration between the first communication link and a second communication link; and

determine the second media playback rate based on the expected link transition initiation time, and the expected link transition duration.