Power-aware selection of radio access technology
First Claim
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1. A method of operating a multi-mode wireless communications device, comprising:
- selecting a desired operating mode from a plurality of possible operating modes including at least an idle mode, a user-initiated speech mode and a network-initiated speech mode;
scanning one or more frequency bands to determine a set of available radio access technologies that support the desired operating mode;
for each radio access technology (RAT), determining RAT-specific system parameters including a discontinuous cycle parameter and RAT-specific operating conditions;
determining an energy consumption metric as a function of the discontinuous cycle parameter for the desired operating mode and the RAT-specific operating conditions; and
selecting a preferred RAT requiring the lowest energy consumption by the device based on the energy consumption metric for the desired operating mode, wherein said selecting of the preferred RAT is a function of the desired operating mode.
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Abstract
Methods and apparatus are disclosed for operating a multi-mode wireless communications device to select a radio access technology (RAT) requiring the lowest energy consumption by the device for a desired operating mode. An exemplary method comprises scanning a plurality of frequency bands to determine a set of available radio access technologies that support the desired operating mode, and evaluating, for each available RAT, RAT-specific system parameters and RAT-specific operating conditions. Based on the evaluation, the RAT requiring the lowest energy consumption by the wireless device for the desired operating mode is selected.
35 Citations
24 Claims
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1. A method of operating a multi-mode wireless communications device, comprising:
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selecting a desired operating mode from a plurality of possible operating modes including at least an idle mode, a user-initiated speech mode and a network-initiated speech mode; scanning one or more frequency bands to determine a set of available radio access technologies that support the desired operating mode; for each radio access technology (RAT), determining RAT-specific system parameters including a discontinuous cycle parameter and RAT-specific operating conditions; determining an energy consumption metric as a function of the discontinuous cycle parameter for the desired operating mode and the RAT-specific operating conditions; and selecting a preferred RAT requiring the lowest energy consumption by the device based on the energy consumption metric for the desired operating mode, wherein said selecting of the preferred RAT is a function of the desired operating mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A multi-mode wireless communications device for operation with a plurality of radio access technologies (RATs), comprising:
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a multi-mode radio section configured to scan one or more frequency bands to determine a set of available RATs supporting a desired operating mode and to determine one or more RAT-specific operating conditions; and a control section configured to; select the desired operating mode from a plurality of possible operating modes including at least an idle mode, a user-initiated speech mode and a network-initiated speech mode; determine RAT-specific system parameters including a discontinuous cycle parameter and the RAT-specific operating conditions for each available RAT; determine an energy consumption metric as a function of the discontinuous cycle parameter for the desired operating mode and the RAT-specific operating conditions; and select the RAT requiring the lowest energy consumption by the device for the desired operating mode based on the energy consumption metric, as a function of the desired operating mode. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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Specification