Reducing stream interruptions during network handover

• US 9,398,505 B2
• Filed: 09/25/2013
• Issued: 07/19/2016
• Est. Priority Date: 03/14/2013
• Status: Active Grant

• Current Assignee: Google LLC (Alphabet Inc.)
• Original Assignee: Google Inc. (Alphabet Inc.)
• Inventors: Greenwalt, Robert J. III
• Primary Examiner(s): Gidado, Rasheed
• Application Number:
  US14/037,187
• Publication Number:
  US 20140269615A1
• Time in Patent Office: 1,028 Days
• Field of Search: 370/331, 370/329
• US Class Current: 1/1
• CPC Class Codes: H04L 65/61 for supporting one-way streaming services, e.g. Internet radio
• CPC Class Codes: H04W 36/0011 for data sessions of end-to-end connection
• CPC Class Codes: H04W 36/14 Reselecting a network or an air interface
• CPC Class Codes: H04W 36/18 for allowing seamless reselection, e.g. soft reselection
• CPC Class Codes: H04W 80/06 Transport layer protocols, e.g. TCP [Transport Control Protocol] over wireless transmission control protocol/Internet protocol [TCP/IP] or user datagram protocol [UDP] H04L69/16
• CPC Class Codes: H04W 84/042 Public Land Mobile systems, e.g. cellular systems
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for receiving streaming media while switching between different networks is described. In one aspect, a method includes receiving a portion of a streaming media through a data connection on a first communication channel between a mobile device and a first network, and while the portion of the streaming media is being received through the data connection on the first communication channel, detecting that a second communication channel between the mobile device and a second network is available, establishing a data connection on the second communication channel, and receiving data through the second data connection on the second communication channel.

Claims

1. A computer-implemented method comprising:

while a media stream is being received through a first data connection on a first communication channel between a mobile device and a first network, detecting that a second communication channel between the mobile device and a second network is available;

after detecting that the second communication channel is available, establishing a second data connection on the second communication channel;

while receiving the media stream through the first data connection on the first communication channel, receiving, through the second data connection on the second communication channel, data that is not part of the media stream being received through the first data connection on the first communication channel;

after establishing the second data connection on the second communication channel, delaying redirection of the media stream to the second communication channel until a predetermined time period has elapsed; and

in response to determining that the predetermined time period has elapsed, establishing an additional data connection on the second communication channel and continuing to receive the media stream through the additional data connection on the second communication channel.

2. The method of claim 1, wherein the first network comprises a wireless wide area network, and the second network comprises a wireless local area network.

3. The method of claim 2, wherein the first communication channel comprises a cellular communication channel, and the second communication channel comprises a Wi-Fi communication channel.

4. The method of claim 1, wherein the first network comprises a wireless network, and the second network comprises a wireline network.

5. The method of claim 4, wherein the first communication channel comprises one of a cellular channel or a Wi-Fi channel, and the second communication channel comprises an Ethernet channel.

6. The method of claim 1, wherein the first data connection on the first communication channel comprises a TCP connection.

7. The method of claim 1, further comprising:

in response to determining that the predetermined time period has elapsed;

closing the first data connection on the first communication channel; and

reducing power provided to a communication interface of the mobile device that maintained the first data connection on the first communication channel.

8. The computer-implemented method of claim 1, wherein the first communication channel has a first bandwidth, and the second communication channel has a second bandwidth that is higher than the first bandwidth;

wherein delaying redirection of the media stream to the second communication channel until the predetermined time period has elapsed comprises;

after establishing the second data connection on the second communication channel, continuing to receive the media stream through the first communication channel that has a lower bandwidth than the second communication channel until the predetermined time period has elapsed.

9. The computer-implemented method of claim 1, further comprising:

before establishing the second data connection on the second communication channel, determining a minimum amount of time for which to maintain the first data connection on the first communication channel and continue to receive the media stream; and

wherein delaying redirection of the media stream to the second communication channel until the predetermined time period has elapsed comprises;

after establishing the second data connection on the second communication channel, delaying redirection of the media stream to the second communication channel for at least the minimum amount of time that was determined before establishing the second data connection on the second communication channel.

10. The computer-implemented method of claim 9, wherein determining the minimum amount of time for which to maintain the first data connection on the first communication channel and continue to receive the media stream comprises:

determining the minimum amount of time for which to maintain the first data connection on the first communication channel and continue to receive the media stream, based on a transfer data rate of the media stream, a number of bits of data that has been received between the mobile device and the first network over a monitored time period, a data type of the media stream, or an input from a user of the mobile device.

11. The computer-implemented method of claim 1, further comprising:

after detecting that the second communication channel between the mobile device and the second network is available and before establishing the second data connection on the second communication channel, determining whether additional data has been requested by the mobile device that is not part of the media stream being received through the first data connection on the first communication channel; and

wherein establishing the second data connection on the second communication channel is performed in response to determining that additional data has been requested by the mobile device that is not part of the media stream being received through the first data connection on the first communication channel.

12. The computer-implemented method of claim 1, further comprising determining that data of the media stream being received through the first data connection is classified as streaming media;

wherein redirection of the media stream to the second communication channel until the predetermined time period has elapsed is delayed based on determining that the data being received through the first data connection on the first communication channel is classified as streaming media.

13. The computer-implemented method of claim 1, further comprising:

while (i) the media stream is being received through the first data connection on the first communication channel and (ii) data that is not part of the media stream being received through the first data connection on the first communication channel is being received through the second data connection on the second communication channel;

providing a representation of the media stream for output at the mobile device irrespective of data that is being received through the second data connection on the second channel.

14. The computer-implemented method of claim 13, further comprising:

while (i) the media stream is being received through the first data connection on the first communication channel and (ii) data that is not part of the media stream being received through the first data connection on the first communication channel is being received through the second data connection on the second communication channel;

providing one or more representations of data that is being received through the second data connection on the second channel for output at the mobile device irrespective of whether the media stream is being received through the first data connection on the first communication channel.

15. The computer-implemented method of claim 1, further comprising:

while the media stream is being received through the first data connection on the first communication channel and before establishing the second data connection on the second communication channel;

providing a representation of the media stream for output at the mobile device.

16. The computer-implemented method of claim 1,

wherein receiving the media stream through the first data connection on the first communication channel comprises:

receiving, through the first data connection on the first communication channel, a media stream that represents one or more portions of a particular media file or broadcast; and

wherein receiving, through the second data connection on the second communication channel, data that is not part of the media stream being received through the first data connection on the first communication channel comprises;

receiving, through the second data connection on the second communication channel, data that does not represent one or more portions of the particular media file or broadcast.

17. A non-transitory computer-readable medium encoded with a computer program, the program comprising instructions that when executed by one or more computers cause the one or more computers to perform operations comprising:

while a media stream is being received through a first data connection on a first communication channel between a mobile device and a first network, detecting that a second communication channel between the mobile device and a second network is available;

after detecting that the second communication channel is available, establishing a second data connection on the second communication channel;

while receiving the media stream through the first data connection on the first communication channel, receiving, through the second data connection on the second communication channel, data that is not part of the media stream being received through the first data connection on the first communication channel;

after establishing the second data connection on the second communication channel, delaying redirection of the media stream to the second communication channel until a predetermined time period has elapsed; and

in response to determining that the predetermined time period has elapsed, establishing an additional data connection on the second communication channel and continuing to receive the media stream through the additional data connection on the second communication channel.

18. The non-transitory computer-readable medium of claim 17, wherein the first communication channel comprises a cellular communication channel, and the second communication channel comprises a Wi-Fi communication channel.

19. The non-transitory computer-readable medium of claim 17, wherein a data connection comprises a TCP connection;

and

wherein establishing the second data connection on the second communication channel and receiving, through the second data connection on the second communication channel, data that is not part of the media stream being received through the first data connection on the first communication channel comprises;

in response to a request for additional data that is not part of the media stream, establishing the second data connection on the second communication channel and receiving the additional data through the second data connection on the second communication channel while receiving the media stream through the first data connection on the first communication channel.

20. The non-transitory computer-readable medium of claim 17, wherein the operations further comprise:

in response to determining that the predetermined time period has elapsed;

closing the first data connection on the first communication channel; and

reducing power provided to a communication interface of the mobile device that maintained the first data connection on the first communication channel.

21. A system comprising:

one or more computers; and

a non-transitory computer-readable medium coupled to the one or more computers having instructions stored thereon which, when executed by the one or more computers, cause the one or more computers to perform operations comprising;

while a media stream is being received through a first data connection on a first communication channel between a mobile device and a first network, detecting that a second communication channel between the mobile device and a second network is available;

after detecting that the second communication channel is available, establishing a second data connection on the second communication channel;

while receiving the media stream through the first data connection on the first communication channel, receiving, through the second data connection on the second communication channel, data that is not part of the media stream being received through the first data connection on the first communication channel;

after establishing the second data connection on the second communication channel, delaying redirection of the media stream to the second communication channel until a predetermined time period has elapsed; and

in response to determining that the predetermined time period has elapsed, establishing an additional data connection on the second communication channel and continuing to receive the media stream through the additional data connection on the second communication channel.