Methods and apparatus for improving inter-radio access technology measurements
Certain aspects of the present disclosure relate to methods and apparatus for improving inter-Radio Access Technology (RAT) measurements. A user equipment (UE) determines, while in a connected state Discontinuous Reception (CDRX) mode in a first cell of a first Radio Access Technology Network (RAT), that a second cell of a second RAT is to be measured. The UE schedules at least two operational periods related to transitioning between ON and OFF states of the CDRX mode to overlap, to increase a period available for measuring signals in the second cell.
1. A method for wireless communication by a user equipment (UE), comprising:
determining, while in a connected state Discontinuous Reception (CDRX) mode in a first cell of a first Radio Access Technology Network (RAT), that a second cell of a second RAT is to be measured; and
scheduling at least two operations related to transition of the UE between ON and OFF states of the CDRX mode to be performed simultaneously, to increase a period available in the OFF state for measuring signals in the second cell,
wherein the scheduling the at least two operations comprises at least one of:
scheduling at least two of the operations related to tuning out of the first RAT and tuning in to the second RAT to overlap, or
scheduling at least two of the operations related to tuning out of the second RAT and tuning back to the first RAT to overlap.
2. The method of claim 1 , wherein increasing the period for measuring the signals in the second cell comprises increasing a period between scheduled measurement gaps that are used for measuring inter-Radio Access Technology (RAT) signals.
3. The method of claim 1 , wherein at least one of:
the first RAT comprises Long Term Evolution (LTE); or
the second RAT comprises Global System for Mobile Communications (GSM), evDO, 1×RTT, or WCDMA.
4. An apparatus for wireless communication by a user equipment (UE), comprising:
means for determining, while in a connected state Discontinuous Reception (CDRX) mode in a first cell of a first Radio Access Technology Network (RAT), that a second cell of a second RAT is to be measured; and
means for scheduling at least two operations related to transition of the UE between ON and OFF states of the CDRX mode to be performed simultaneously, to increase a period available in the OFF state for measuring signals in the second cell,
wherein the means for scheduling the at least two operational periods is configured to perform at least one of:
scheduling at least two of the operations related to tuning out of the first RAT and tuning in to the second RAT to overlap, or
scheduling at least two of the operations related to tuning out of the second RAT and tuning back to the first RAT to overlap.
5. The apparatus of claim 4 , wherein increasing the period for measuring the signals in the second cell comprises increasing a period between scheduled measurement gaps that are used for measuring inter-Radio Access Technology (RAT) signals.
6. The apparatus of claim 4 , wherein at least one of:
the first RAT comprises Long Term Evolution (LTE); or
the second RAT comprises Global System for Mobile Communications (GSM), evDO, 1×RTT, or WCDMA.
7. An apparatus for wireless communication by a user equipment (UE), comprising:
at least one processor configured to:
determine, while in a connected state Discontinuous Reception (CDRX) mode in a first cell of a first Radio Access Technology Network (RAT), that a second cell of a second RAT is to be measured; and
schedule at least two operations related to transition of the UE between ON and OFF states of the CDRX mode to be performed simultaneously, to increase a period available in the OFF state for measuring signals in the second cell,
wherein the at least one processor schedules the at least two operations by:
scheduling at least two of the operations related to tuning out of the first RAT and tuning in to the second RAT to overlap, or
scheduling at least two of the operations related to tuning out of the second RAT and tuning back to the first RAT to overlap; and
a memory coupled to the at least one processor.
8. The apparatus of claim 7 , wherein the at least one processor increases the period for measuring the signals in the second cell by increasing a period between scheduled measurement gaps that are used for measuring inter-Radio Access Technology (RAT) signals.
9. The apparatus of claim 7 , wherein at least one of:
the first RAT comprises Long Term Evolution (LTE); or
the second RAT comprises Global System for Mobile Communications (GSM), evDO, 1×RTT, or WCDMA.
10. A non-transitory computer-readable medium for wireless communication by a user equipment (UE), the computer-readable medium storing instructions executable by at least one processor for performing a method comprising:
determining, while in a connected state Discontinuous Reception (CDRX) mode in a first cell of a first Radio Access Technology Network (RAT), that a second cell of a second RAT is to be measured; and
scheduling at least two operations related to transition of the UE between ON and OFF states of the CDRX mode to be performed simultaneously, to increase a period available in the OFF state for measuring signals in the second cell,
wherein the scheduling the at least two operations comprises at least one of:
scheduling at least two of the operations related to tuning out of the first RAT and tuning in to the second RAT to overlap, or
scheduling at least two of the operations related to tuning out of the second RAT and tuning back to the first RAT to overlap.
11. The computer-readable medium of claim 10 , wherein increasing the period for measuring the signals in the second cell comprises increasing a period between scheduled measurement gaps that are used for measuring inter-Radio Access Technology (RAT) signals.
12. The computer-readable medium of claim 10 , wherein at least one of:
the first RAT comprises Long Term Evolution (LTE); or
the second RAT comprises Global System for Mobile Communications (GSM), evDO, 1×RTT, or WCDMA.