Switching between networks based on quality of available networks

• US 9,832,716 B2
• Filed: 08/12/2015
• Issued: 11/28/2017
• Est. Priority Date: 08/12/2015
• Status: Active Grant

• Current Assignee: Google LLC (Alphabet Inc.)
• Original Assignee: Google LLC (Alphabet Inc.)
• Inventors: Tan, Weihua, Muthineni, Anil
• Primary Examiner(s): Ly, Nghi H
• Application Number:
  US14/824,326
• Publication Number:
  US 20170048789A1
• Time in Patent Office: 839 Days
• Field of Search: 4554221, 455423, 4554352, 455434
• CPC Class Codes: H04B 17/318 Received signal strength
• CPC Class Codes: H04L 43/16 Threshold monitoring
• CPC Class Codes: H04W 36/14 Reselecting a network or an air interface
• CPC Class Codes: H04W 36/30 by measured or perceived connection quality data
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service
• CPC Class Codes: H04W 76/14 Direct-mode setup

Abstract

A wireless communication enabled device can establish a connection with a wireless communications network and can assign a network quality score to the wireless communications network based on one or more characteristics of the wireless communications network. The wireless communication enabled device can observe a current quality of the connection with the wireless communications network. If the quality of the network connection has degraded below a threshold level, the wireless communication enabled device can start a network reevaluation timer. The length of time monitored by the network reevaluation timer can be based on the assigned network quality score. Upon expiration of the network reevaluation timer, the wireless communication enabled device reevaluates the quality of the network connection. If the network connection is still in a degraded state at the time of reevaluation, the wireless communication enabled device may switch to another available wireless communications network.

Claims

1. A computer-implemented method comprising:

establishing, by a computing device, a connection with a first wireless communication network;

identifying, by the computing device, a characteristic of the first wireless communication network;

determining, by the computing device and at a first point in time, that the connection with the first wireless communication network has degraded below a threshold quality level;

identifying, by the computing device, a time at which to reevaluate whether the connection with the first wireless communication network is still below the threshold quality level, the time identified at least partially based on the characteristic of the first wireless communication network;

determining, by the computing device, at a second point in time and in response to having determined that the time at which to reevaluate whether the connection with the first wireless communication network is still below the threshold quality level has expired, that the connection with the first wireless communication network is still below the threshold quality level; and

responsive to determining, at the first point in time, that the connection with the first wireless communication network had degraded below the threshold quality level and determining, at the second point in time, that the connection with the first wireless communication network was still below the threshold quality level, establishing, by the computing device, a connection with a second wireless communication network.

2. The method of claim 1, wherein the characteristic identifies a mobile communication technology employed by the first wireless communication network.

3. The method of claim 1, wherein identifying the characteristic of the first wireless communication network includes identifying the characteristic based on historically observed network connectivity speeds for the first wireless communication network.

4. The method of claim 1, wherein identifying the time at which to reevaluate whether the connection with the first wireless communication network is still below the threshold quality level includes assigning a rating to the first wireless communication network, the rating being based on at least one of a mobile communication technology employed by the first wireless communication network and historically observed network connectivity speeds for the first wireless communication network.

5. The method of claim 1, wherein the characteristic identifies a wireless communications service provider associated with the first wireless communication network.

6. The method of claim 1, wherein the threshold quality level is determined based on historically observed network connectivity quality for a plurality of wireless communication networks.

7. The method of claim 1, further comprising:

identifying, by the computing device, a characteristic of the second wireless communication network;

determining, by the computing device and at a third point in time, that the connection with the second wireless communication network has degraded below the threshold quality level;

identifying, by the computing device, another time at which to reevaluate whether the connection with the second wireless communication network is still below the threshold quality level at least partially based on the characteristic of the second wireless communication network;

determining, by the computing device, at a fourth point in time and in response to having determined that the another time at which to reevaluate whether the connection with the second wireless communication network is still below the threshold quality level has expired, that the connection with the second wireless communication network is still below the threshold quality level; and

responsive to determining, at the third point in time, that the connection with the second wireless communication network had degraded below the threshold quality level and determining, at the fourth point in time, that the connection with the first wireless communication network was still below the threshold quality level, establishing, by the computing device, a connection with a third wireless communication network.

8. The method of claim 7, wherein:

the time at which to reevaluate whether the connection with the first wireless communication network is still below the threshold quality level is identified using a first reevaluation length of time calculated based on the characteristic of the first wireless communication network;

the another time at which to reevaluate whether the connection with the second wireless communication network is still below the threshold quality level is identified using a second reevaluation length of time calculated based on the characteristic of the second wireless communication network; and

the first reevaluation length of time is different than the second reevaluation length of time.

9. The method of claim 1, further comprising:

identifying, by the computing device, a characteristic of the second wireless communication network;

comparing, by the computing device, the characteristic of the first wireless communication network to the characteristic of the second wireless communication network to determine that the characteristic of the first wireless communication network is superior to the characteristic of the second wireless communication network; and

responsive to determining that the characteristic of the first wireless communication network is superior to the characteristic of the second wireless communication network, ending the connection with the second wireless communication network and establishing another connection with the first wireless communication network.

10. The method of claim 9, further comprising:

identifying, by the computing device, a minimum length of time to maintain the another connection with the first wireless communication network;

determining, by the computing device, at a third point in time, and in response to having determined that the minimum length of time to maintain the another connection with the first wireless communication network has expired, that the another connection with the first wireless communication network has degraded below a threshold quality level;

identifying, by the computing device, another time at which to reevaluate whether the another connection with the first wireless communication network is still below the threshold quality level at least partially based on the characteristic of the first wireless communication network;

determining, by the computing device, at a fourth point in time and in response to having determined that the another time at which to reevaluate whether the another connection is still below the threshold quality level has expired, that the another connection with the first wireless communication network is still below the threshold quality level; and

responsive to determining, at the third point in time, that the another connection with the first wireless communication network had degraded below the threshold quality level and determining, at the fourth point in time, that the another connection with the first wireless communication network was still below the threshold quality level, establishing, by the computing device, a connection with a third wireless communication network.

11. A mobile computing device comprising:

a wireless communications interface;

a data store storing executable instructions; and

one or more processors that interact with the data store and execute instructions that cause the mobile computing device to perform operations comprising;

establishing, using the wireless communications interface, a connection with a first wireless communication network;

identifying a characteristic of the first wireless communication network;

determining, at a first point in time, that the connection with the first wireless communication network has degraded below a threshold quality level;

identifying a time at which to reevaluate whether the connection with the first wireless communication network is still below the threshold quality level, the time identified at least partially based on the characteristic of the first wireless communication network;

determining, at a second point in time and in response to having determined that the time at which to reevaluate whether the connection with the first wireless communication network is still below the threshold quality level has expired, that the connection with the first wireless communication network is still below the threshold quality level; and

responsive to determining, at the first point in time, that the connection with the first wireless communication network had degraded below the threshold quality level and determining, at the second point in time, that the connection with the first wireless communication network was still below the threshold quality level, establishing, using the wireless communications interface, a connection with a second wireless communication network.

12. The mobile computing device of claim 11, wherein the characteristic identifies a mobile communication technology employed by the first wireless communication network.

13. The mobile computing device of claim 11, wherein identifying the characteristic of the first wireless communication network includes identifying the characteristic based on historically observed network connectivity speeds for the first wireless communication network.

14. The mobile computing device of claim 11, wherein identifying the time at which to reevaluate whether the connection with the first wireless communication network is still below the threshold quality level includes assigning a rating to the first wireless communication network, the rating being based on at least one of a mobile communication technology employed by the first wireless communication network and historically observed network connectivity speeds for the first wireless communication network.

15. The mobile computing device of claim 11, wherein the characteristic identifies a wireless communications service provider associated with the first wireless communication network.

16. The mobile computing device of claim 11, wherein the threshold quality level is determined based on historically observed network connectivity quality for a plurality of wireless communication networks.

17. The mobile computing device of claim 11, the operations further comprising:

identifying a characteristic of the second wireless communication network;

determining, at a third point in time, that the connection with the second wireless communication network has degraded below the threshold quality level;

identifying another time at which to reevaluate whether the connection with the second wireless communication network is still below the threshold quality level at least partially based on the characteristic of the second wireless communication network;

determining, at a fourth point in time and in response to having determined that the another time at which to reevaluate whether the connection with the second wireless communication network is still below the threshold quality level has expired, that the connection with the second wireless communication network is still below the threshold quality level; and

responsive to determining, at the third point in time, that the connection with the second wireless communication network had degraded below the threshold quality level and determining, at the fourth point in time, that the connection with the first wireless communication network was still below the threshold quality level, establishing, using the wireless communications interface, a connection with a third wireless communication network.

18. The mobile computing device of claim 17, wherein:

the time at which to reevaluate whether the connection with the first wireless communication network is still below the threshold quality level is identified using a first reevaluation length of time calculated based on the characteristic of the first wireless communication network;

the another time at which to reevaluate whether the connection with the second wireless communication network is still below the threshold quality level is identified using a second reevaluation length of time calculated based on the characteristic of the second wireless communication network; and

the first reevaluation length of time is different than the second reevaluation length of time.

19. The mobile computing device of claim 11, the operations further comprising:

identifying a characteristic of the second wireless communication network;

comparing the characteristic of the first wireless communication network to the characteristic of the second wireless communication network to determine that the characteristic of the first wireless communication network is superior to the characteristic of the second wireless communication network; and

responsive to determining that the characteristic of the first wireless communication network is superior to the characteristic of the second wireless communication network, ending the connection with the second wireless communication network and establishing another connection with the first wireless communication network.

20. The mobile computing device of claim 19, the operations further comprising:

identifying a minimum length of time to maintain the another connection with the first wireless communication network;

determining, at a third point in time, and in response to having determined that the minimum length of time to maintain the another connection with the first wireless communication network has expired, that the another connection with the first wireless communication network has degraded below a threshold quality level;

identifying another time at which to reevaluate whether the another connection with the first wireless communication network is still below the threshold quality level at least partially based on the characteristic of the first wireless communication network;

determining, at a fourth point in time and in response to having determined that the another time at which to reevaluate whether the another connection is still below the threshold quality level has expired, that the another connection with the first wireless communication network is still below the threshold quality level; and

responsive to determining, at the third point in time, that the another connection with the first wireless communication network had degraded below the threshold quality level and determining, at the fourth point in time, that the another connection with the first wireless communication network was still below the threshold quality level, establishing, using the wireless communications interface, a connection with a third wireless communication network.