Automatic tracking of mobile device camping failure to an access point
View Patent ↗A method and apparatus for a device in which when an attempt on a frequency to camp on a cell fails, there is an indication stored in relation to the frequency of the failed camping attempt.
1. A method, when implemented in a device, comprising:
when the device is operating on a first frequency in a connected mode state, the device detecting at least one condition for transitioning out of the connected mode state;
selecting the first frequency and performing a first attempt to camp on a cell with the first frequency in response to the condition having been detected;
determining that the first attempt to camp on the cell has failed;
in response to the first attempt to camp having failed, identifying an indication that the first frequency is not allowed for camping;
marking the first frequency with an indicium indicating a camping failure in response to identifying the indication;
adding the first frequency to a first set of frequencies marked with an indicium indicating a camping failure in response to the frequency having been marked;
after the first frequency has been marked, analyzing a plurality of frequencies, the plurality of frequencies comprising the first set of frequencies and a second set of frequencies, wherein each frequency in the second set of frequencies is not marked with an indicium indicating a camping failure;
determining, based on the plurality of frequencies being analyzed, that each of the second set of frequencies have been previously used for a subsequent camping attempt in response to the first attempt to camp having failed;
selecting a second frequency from the set of first frequencies based on each of the second set of frequencies have been previously used for a subsequent camping attempt in response to the first attempt to camp having failed, wherein the second frequency from the set of first frequencies is still marked with the indicium indicating a camping failure when selected; and
performing a second attempt to camp on a cell with the second frequency.
2. The method of claim 1 , in which marking the first frequency comprises:
storing an indicium in relation to the first frequency.
3. The method of claim 1 , in which marking the first frequency comprises
storing an indicium in relation to the first frequency, and in which the indicium comprises a penalty for future camping attempts on the first frequency.
4. The method of claim 2 , in which
when there are one or more different frequencies for attempting to camp on a cell, attempting to camp on a cell using a frequency dependent upon the indicium.
5. The method of claim 2 , in which
when there are one or more different frequencies for attempting to camp on a cell and when the device has not received information relating to a frequency of camping to use, attempting to camp on a cell using a frequency dependent upon the indicium.
6. The method of claim 2 , in which
when there are one or more different frequencies for attempting to camp on a cell, attempting to camp on a cell using a frequency dependent upon the indicium where attempting to camp on the cell comprises
attempting to camp using one or more of the different frequencies in preference to the frequency.
7. The method of claim 2 , in which
when there are one or more different frequencies for attempting to camp on a cell and when the device has not received information relating to a frequency of camping to use:
attempting to camp on a cell using a frequency dependent upon the indicium,
wherein attempting to camp on the cell comprises
attempting to camp using one or more of the different frequencies in preference to the frequency.
8. The method of claim 2 , in which
when there are one or more different frequencies for attempting to camp on a cell, attempting to camp on a cell using a frequency dependent upon the indicium.
9. The method of claim 2 , in which the indicium comprises one of:
an indication of information received by the device that the cell is barred for camping; and
a failure to receive information required for camping on the cell.
10. The method of claim 2 , in which
when the device camps on a cell on a frequency with a related indicium,
removing the indicium.
11. The method of claim 1 , in which the device is operable in a High Speed Packet Access Operation in which separate frequencies are allocated for connected mode operation, and idle mode operation.
12. The method of claim 1 , wherein transitioning out of the connected mode comprises transition to an idle mode.
13. The method of claim 1 , in which the device attempts to camp on a cell based on one of:
radio link failure;
re-direction to circuit switched operation from Long Term Evolution (LTE) operation on direction of a network in which the device is operable, without the network indicating a frequency for the circuit switched operation; and
in Global System for Mobile Communications-Edge Radio Access Network (GERAN) operation where a list of frequencies provided to the device for cell reselection or cell change does not indicate which of the frequencies in the list are for connected or idle mode operation.
14. The method of claim 1 in which the attempt to camp on the cell is part of an inter-Radio Access Technology (inter-RAT), or an intra-RAT transition.
15. A wireless telecommunications device comprising:
a processor; and
a memory having stored therein one or more routines executable by the processor, the one or more routines being adapted to operate so that when the wireless telecommunications device is operating on a first frequency in a connected mode state, the wireless telecommunications device
detects at least one condition for transitioning out of the connected mode state;
selects the first frequency and performs a first attempt to camp on a cell with the first frequency;
determines that the first attempt to camp on the cell has failed;
in response to the first attempt to camp having failed, identifies an indication that the first frequency is not allowed for camping;
marks the frequency with an indicium indicating a camping failure in response to the indication being identified;
after the frequency has been marked, adds the first frequency to a first set of frequencies marked with an indicium indicating a camping failure in response to the frequency having been marked;
analyzes a plurality of frequencies, the plurality of frequencies comprising the first set of frequencies and a second set of frequencies comprising frequencies that are not marked with an indicium indicating a camping failure;
determines, based on the plurality of frequencies being analyzed, that each of the second set of frequencies have been previously used for a subsequent camping attempt in response to the first attempt to camp having failed;
selects a second frequency from the set of first frequencies based on the each of the second set of frequencies have been previously used for a subsequent camping attempt in response to the first attempt to camp having failed, wherein the second frequency from the set of first frequencies is still marked with the indicium indicating a camping failure when selected; and
performs a second attempt to camp on a cell with the second frequency.
16. The device of claim 15 , in which
the one or more routines are adapted to operate to mark the first frequency by storing an indicium in relation to the first frequency.
17. The device of claim 15 , in which the one or more routines are adapted to operate to mark the first frequency by
storing an indicium in relation to the first frequency, and in which the indicium comprises a penalty for future camping attempts on the first frequency.
18. The device of claim 16 , in which
when there are one or more different frequencies for attempting to camp on a cell, the routines are adapted to operate to attempt to camp on a cell using a frequency dependent upon the indicium.
19. The device of claim 16 , in which
when there are one or more different frequencies for attempting to camp on a cell and when the device has not received information relating to a frequency of camping to use,
the routines are adapted to operate to attempt to camp on a cell using a frequency dependent upon the indicium.
20. The device of claim 16 , in which
when there are one or more different frequencies for attempting to camp on a cell, the routines are adapted to operate to
attempt to camp on a cell using a frequency dependent upon the indicium, and in which attempt to camp on the cell comprises
attempt to camp using one or more of the different frequencies in preference to the frequency.
21. The device of claim 16 , in which when there are one or more different frequencies for attempting to camp on a cell and when the device has not received information relating to a frequency of camping to use, the routines are adapted to operate
attempt to camp on a cell using a frequency dependent upon the indicium; and
in which the routines are adapted to operate to attempt to camp on a cell by using one or more of the different frequencies in preference to the frequency.
22. The device of claim 16 , in which
when there is one or more different frequencies for attempting to camp on a cell, the routines are adapted to operate to
attempt to camp on a cell using a frequency dependent upon the indicium, where the routines are adapted to operate to
attempt to camp on a cell by attempting to camp on a cell using a different frequency for a period.
23. The device of claim 16 , in which the indicium comprises one of:
an indication of information received by the device that the cell is barred for camping; and
a failure to receive information required for camping on the cell.
24. The device of claim 16 , in which
when the device camps on a cell on a frequency with a related indicium, the routines are adapted to operate to
remove the indicium.
25. The device of claim 15 , in which the device is operable in a High Speed Packet Access Operation in which separate frequencies are allocated for connected mode operation, and idle mode operation.
26. The device of claim 15 , wherein transitioning out of the connected mode comprises transitioning to an idle mode.
27. The device of claim 15 , in which the device attempts to camp on a cell based on one of:
radio link failure;
re-direction to circuit switched operation from Long Term Evolution (LTE) operation on direction of a network in which the device is operable, without the network indicating a frequency for the circuit switched operation; and
in Global System for Mobile Communications-Edge Radio Access Network (GERAN) operation where a list of frequencies provided to the device for cell reselection or cell change does not indicate which of the frequencies in the list are for connected or idle mode operation.
28. The device of claim 15 in which the attempt to camp on the cell is part of an inter-Radio Access Technology (inter-RAT), or an intra-RAT transition.
29. A non-transitory computer-readable medium having computer-executable instructions adapted to cause a device to perform the method of claim 1 .
30. The method of claim 1 , wherein the second frequency is selected based on determining that the second frequency in the first set of frequencies has not been previously used for a subsequent camping attempt in response to the first attempt to camp having failed.