Dynamic receive diversity switching
AssigneeQUALCOMM Incorporated
InventorsNitin Kasturi, Vidyut M. Naware, Ketan N. Patel
Life of this patent
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Abstract
Dynamically control of receive diversity switching in a user equipment (UE) is disclosed. By dynamically controlling the switching between enabling and disabling the receive diversity, power consumption in UEs, such as smart phones and other mobile devices may be reduced. Control is based, at least in part, on measurements for data activity performed by the UE. When the UE finds measurements that would suggest data activity, the UE will switch to enable a receive diversity state when conditions are available for the switch. Similarly, when the UE finds measurements that would suggest data inactivity, the UE will switch to disable the receive diversity state when conditions are available for the switch.
Claims28
A method of dynamically switching a receive diversity, comprising:
- setting the receive diversity initially to a first enablement state;
- measuring data activity after expiration of a measurement interval;
- switching the receive diversity to a second enablement state when the measured data activity indicates the second enablement state;
- maintaining the first enablement state when the measured data activity indicates the first enablement state;
- re-measuring the data activity after expiration of another measurement interval;
- switching the receive diversity to the first enablement state when the re-measured data activity indicates the first enablement state;
- and
- maintaining the second enablement state when the re-measured data activity indicates the second enablement state.
A wireless apparatus configured to dynamically switch a receive diversity, comprising:
- means for setting the receive diversity initially to a first enablement state;
- means for measuring data activity after expiration of a measurement interval;
- means for switching the receive diversity to a second enablement state when the measured data activity indicates the second enablement state;
- means for maintaining the first enablement state when the measured data activity indicates the first enablement state;
- means for re-measuring the data activity after expiration of another measurement interval;
- means for switching the receive diversity to the first enablement state when the re-measured data activity indicates the first enablement state;
- and
- means for maintaining the second enablement state when the re-measured data activity indicates the second enablement state.
The wireless apparatus of claim 19, further comprising:
- means for adjusting the first enablement value and the second enablement value to bias switching towards maintaining a first enablement state;
- and
- means for adjusting the first enablement value and the second enablement value to bias switching towards maintaining a second enablement state.
A computer program product for wireless communications by a user equipment (UE) in a wireless network, comprising:
- a non-transitory computer-readable medium having program code recorded thereon, the program code comprising:
- program code to set the receive diversity initially to a first enablement state;
- program code to measure data activity after expiration of a measurement interval;
- program code to switch the receive diversity to a second enablement state when the measured data activity indicates the second enablement state;
- program code to maintain the first enablement state when the measured data activity indicates the first enablement state;
- program code to re-measure the data activity after expiration of another measurement interval;
- program code to switch the receive diversity to the first enablement state when the re-measured data activity indicates the first enablement state;
- and
- program code to maintain the second enablement state when the re-measured data activity indicates the second enablement state.
A wireless apparatus, comprising:
- at least one processor;
- a memory coupled to the at least one processor;
- a plurality of antennas coupled to and operable under control of the at least one processor;
- a selection switch coupled to and operable under control of the at least one processor;
- wherein the at least one processor is configured:
- to set the receive diversity initially to a first enablement state;
- to measure data activity after expiration of a measurement interval;
- to switch the receive diversity to a second enablement state when the measured data activity indicates the second enablement state;
- to maintain the first enablement state when the measured data activity indicates the first enablement state;
- to re-measure the data activity after expiration of another measurement interval;
- to switch the receive diversity to the first enablement state when the re-measured data activity indicates the first enablement state;
- and
- to maintain the second enablement state when the re-measured data activity indicates the second enablement state.
The wireless apparatus of claim 26, wherein the at least one processor is further configured to set the counter stored in the memory to an initial second enablement value when the receive diversity is switched to the second enablement value, wherein the configuration of the at least one processor to switch the receive diversity to the first enablement state comprises configuration:
- to decrement the counter when the re-measured data activity exceeds a second enablement threshold;
- and
- to switch the receive diversity to the first enablement state when the counter is zero.
The wireless apparatus of claim 27, wherein the at least one processor is further configured:
- to adjust the first enablement value and the second enablement value to bias switching towards maintaining a first enablement state;
- and
- to adjust the first enablement value and the second enablement value to bias switching towards maintaining a second enablement state.
The wireless apparatus of claim 30, wherein the configuration of the at least one processor to switch the receive diversity to the second enablement state comprises configuration to enable the selection switch to couple one of a plurality of antennas to receive data, and wherein the configuration of the at least one processor to switch the receive diversity to the first enablement state comprises configuration to enable the selection switch to couple the plurality of antennas to receive data.
Dependencies are inferred from the claim text.