RADIO ACCESS TECHNOLOGY SELECTION

• US 20100075665A1
• Filed: 12/09/2008
• Published: 03/25/2010
• Est. Priority Date: 09/22/2008
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Lindoff, Bengt, Nader, Ali
• Granted Patent: US 7,848,756 B2
• Time in Patent Office: Days
• US Class Current: 455/426.100
• CPC Class Codes: H04J 11/0093 Neighbour cell search
• CPC Class Codes: H04W 36/14 Reselecting a network or an air interface
• CPC Class Codes: H04W 36/24 Reselection being triggered by specific parameters
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

A method of operating a wireless communication device may include predicting an application expected to be used based on a user interaction with the wireless communications device, determining a preferred radio access technology (RAT) based on the predicted application, determining whether the wireless communications device is currently utilizing the determined preferred RAT as a current RAT, and performing one of ensuring that the wireless communications device continues to utilize the current RAT when the determined preferred RAT corresponds to the current RAT, or searching for the determined preferred RAT when the current RAT does not correspond to the determined preferred RAT and selecting the determined preferred RAT, based on the searching, when the determined preferred RAT is found.

Claims

1. A method of operating a wireless communications device, comprising:

predicting an application expected to be used based on a user'"'"'s interaction with the wireless communications device;

determining a preferred radio access technology (RAT) based on the predicted application;

determining whether the wireless communications device is currently utilizing the determined preferred RAT as a current RAT; and

performing one of;

ensuring that the wireless communications device continues to utilize the current RAT when the determined preferred RAT corresponds to the current RAT, or

searching for the determined preferred RAT when the current RAT does not correspond to the determined preferred RAT and selecting the determined preferred RAT, based on the searching, when the determined preferred RAT is found.

2. The method of claim 1, where the predicting comprises at least one of:

determining a current state of a user interface of the wireless communications device based on the user interaction and predicting the application expected to be used based on the determined current state of the user interface;

or

predicting the application to be used based on one or more of past user history behavior, location information or time of day.

3. The method of claim 1, where the determining the preferred RAT is based on one or more of a monetary cost criteria, a power consumption criteria associated with the wireless communications device, a bandwidth criteria, or an application availability criteria.

4. The method of claim 3, where the monetary cost criteria includes at least one of minimizing roaming fees or minimizing a cost associated with utilizing a service with respect to the predicted application.

5. The method of claim 1, where the ensuring comprises:

preventing reselection of a RAT or handover to a different RAT based on an offset of a reselection threshold or an offset of a handover threshold.

6. The method of claim 1, where the searching comprises:

receiving a neighboring cell list from a network; and

searching for the determined RAT based on the neighboring cell list.

7. The method of claim 1, where the searching comprises:

searching based on a history list of previously used or detected RATs and carrier frequencies, or

searching based on a history list of previously used or detected RATs based on current position data of the wireless communications device.

8. The method of claim 1, further comprising:

receiving a selection of an application; and

determining whether the current RAT supports the selected application.

9. The method of claim 8, further comprising:

starting the selected application when it is determined that the current RAT supports the selected application;

determining whether the wireless communications device is utilizing the determined preferred RAT;

performing a search for the determined preferred RAT when the current RAT does not correspond to the determined preferred RAT;

performing a handover to the determined preferred RAT if the determined preferred RAT is found based on the search; and

when the determined preferred RAT is found the ensuring comprises;

preventing reselection of a RAT or handover to a different RAT based on an offset of a reselection threshold or an offset of a handover threshold, where the offset of the reselection threshold or the offset of the handover threshold is maintained until the selected application is terminated.

10. The method of claim 8, further comprising:

delaying a starting of the selected application when it is determined that the current RAT does not support the selected application;

performing a search, for a period of time, to find the determined preferred RAT that supports the selected application; and

indicating an application start-up failure when the period of time expires without finding the determined preferred RAT that supports the selected application.

11. A wireless communications device comprising:

at least one processor configured to;

predict an application expected to be used based on a user'"'"'s interaction with the wireless communications device,

determine a preferred radio access technology (RAT) based on the predicted application,

determine whether a current RAT being utilized by the wireless communications device corresponds to the determined preferred RAT, and

perform one of;

ensure that the wireless communications device continues to utilize the current RAT when the determined preferred RAT corresponds to the current RAT, or

search for the determined preferred RAT when the current RAT does not correspond to the determined preferred RAT, and select the determined preferred RAT, based on the searching, when the determined preferred RAT is found.

12. The wireless communications device of claim 11, where, when determining the preferred RAT, the at least one processor is further configured to:

determine the preferred RAT based on one or more of a monetary cost criteria, power consumption associated with the wireless communications device criteria, bandwidth criteria, or an application availability criteria.

13. The wireless communications device of claim 12, where the application availability criteria indicates whether a particular RAT supports the predicted application.

14. The wireless communications device of claim 11, where, when ensuring that the wireless communication device continues to utilize the current RAT, the at least one processor is further configured to:

prevent reselection of a different RAT or handover to a different RAT by offsetting one or more threshold values that govern reselection or handover with respect to the current RAT.

15. The wireless communications device of claim 11, where the at least one processor is further configured to:

receive a user selection of an application,

determine whether the current RAT supports the user selected application.

16. The wireless communications device of claim 15, where the at least one processor is further configured to:

start the selected application when it is determined that the current RAT supports the selected application;

determine whether the wireless communications device is utilizing the determined preferred RAT;

perform a search for the determined RAT when the current RAT does not correspond to the determined preferred RAT; and

perform a handover to the determined preferred RAT if the determined preferred RAT is found based on the search.

17. The wireless communications device of claim 15, where the at least one processor is further configured to:

delay a starting of the selected application when it is determined that the current RAT does not support the selected application;

perform a search, for a period of time, to find the determined preferred RAT that supports the selected application; and

indicate an application start-up failure when the period of time expires without finding the determined preferred RAT that supports the selected application.

18. The wireless communications device of claim 11, where, when the determining the preferred RAT, the at least one processor is further configured to:

consult a database that identifies one or more preferred RATs that support the predicted application, where the one or more RATs are prioritized based on one or more of a monetary cost criteria, a power consumption criteria associated with the wireless communications device, a bandwidth criteria, or an application availability criteria.

19. A computer-readable medium containing instructions executable by at least one processor of a wireless communications device, the computer-readable medium comprising:

one or more instructions for predicting an application that will be started based on a user'"'"'s interaction with the wireless communications device;

one or more instructions for determining a preferred radio access technology (RAT) based on the predicted application;

one or more instructions for determining whether a current RAT being utilized by the wireless communications device corresponds to the preferred RAT;

one or more ensuring that the wireless communications device continues to utilize the current RAT when the preferred RAT corresponds to the current RAT; and

one or more instructions for searching for the preferred RAT when the current RAT does not correspond to the preferred RAT.

20. The computer-readable medium of claim 19, where the determining the preferred RAT is based on one or more of a monetary cost criteria, a power consumption criteria associated with the wireless communications device, a bandwidth criteria, or an application availability criteria.