Smart antenna system using orientation sensors
First Claim
Patent Images
1. A wireless device comprising:
- an antenna subsystem having a selectable polarization;
at least one sensor configured to provide at least one orientation measurement of the wireless device and provide an indication of an environment of the wireless device;
a memory configured to store polarization information for different states of the antenna subsystem; and
a processor unit coupled to the memory and configured to;
receive the at least one orientation measurement;
select a polarization of the antenna subsystem based on the at least one orientation measurement and the polarization information for the different states of the antenna subsystem from the memory when the indication of the environment comprises the wireless device being in an outdoor environment;
select the polarization of the antenna subsystem based on a received signal strength when the indication of the environment comprises the wireless device being in an indoor environment, wherein the received signal strength is measured using different antenna subsystem configurations; and
set the polarization of the antenna subsystem to achieve the selected polarization.
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Abstract
A wireless device comprising an antenna subsystem having a selectable polarization, at least one sensor configured to provide at least one orientation measurement of the wireless device, and a processor unit coupled to the at least one sensor and configured to receive the at least one orientation measurement, select a polarization of the antenna subsystem based on the at least one orientation measurement, and set the polarization to achieve the selected polarization.
28 Citations
31 Claims
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1. A wireless device comprising:
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an antenna subsystem having a selectable polarization; at least one sensor configured to provide at least one orientation measurement of the wireless device and provide an indication of an environment of the wireless device; a memory configured to store polarization information for different states of the antenna subsystem; and a processor unit coupled to the memory and configured to; receive the at least one orientation measurement; select a polarization of the antenna subsystem based on the at least one orientation measurement and the polarization information for the different states of the antenna subsystem from the memory when the indication of the environment comprises the wireless device being in an outdoor environment; select the polarization of the antenna subsystem based on a received signal strength when the indication of the environment comprises the wireless device being in an indoor environment, wherein the received signal strength is measured using different antenna subsystem configurations; and set the polarization of the antenna subsystem to achieve the selected polarization. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A wireless device comprising:
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an antenna subsystem having a selectable polarization; at least one sensor configured to provide at least one orientation measurement of the wireless device; a memory configured to store polarization information for different states of the antenna subsystem; and a processor unit coupled to the memory and configured to; receive the at least one orientation measurement; select a polarization of the antenna subsystem based on the at least one orientation measurement and the polarization information for the different states of the antenna subsystem from the memory; and set the polarization of the antenna subsystem to achieve the selected polarization, wherein the antenna subsystem comprises a first antenna with first and second contacts, a second antenna with third and fourth contacts, and a switch coupled to the processor unit, wherein the wireless device further comprises a first transceiver and a second transceiver, wherein the switch is configured to connect the first transceiver to the first antenna at the first contact and to connect the second transceiver to the second transceiver at the third contact in a first state, wherein the switch is configured to connect the first transceiver to the second antenna at the fourth contact and to connect the second transceiver to the first antenna at the second contact in a second state, and wherein setting the polarization comprises setting the state of the switch.
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12. A method comprising:
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receiving at least one orientation measurement and an indication of an environment of a wireless device; retrieving polarization information for different states of an antenna subsystem of the wireless device from a memory of the wireless device; selecting a polarization of the antenna subsystem based on the at least one orientation measurement and the polarization information for the different states of the antenna subsystem from the memory when the indication of the environment comprises the wireless device being in an outdoor environment; selecting the polarization of the antenna subsystem based on a received signal strength when the indication of the environment com rises the wireless device being in an indoor environment, wherein the received signal strength is measured using different antenna subsystem configurations; and setting the polarization of the antenna subsystem to achieve the selected polarization. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A method comprising:
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receiving at least one orientation measurement of a wireless device; retrieving polarization information for different states of an antenna subsystem of the wireless device from a memory of the wireless device; selecting a polarization of the antenna subsystem based on the at least one orientation measurement and the polarization information for the different states of the antenna subsystem from the memory; and setting the polarization of the antenna subsystem to achieve the selected polarization, wherein the antenna subsystem comprises a first feed line, a first antenna with two selectable connections to the first feed line, a second feed line, and a second antenna with two selectable connections to the second feed line, and a switch, wherein the switch is configured to select the connection of the first antenna to the first feed line and to select the connection of the second antenna to the second feed line, and wherein setting the polarization comprises setting the state of the switch.
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22. An apparatus comprising:
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a memory configured to store polarization information for different states of an antenna subsystem; and a processor coupled to the memory and configured to; couple to the antenna subsystem and at least one sensor, wherein the antenna subsystem has a selectable polarization; receive at least one orientation measurement and an indication of an environment of a wireless device from the at least one sensor; select a polarization of the antenna subsystem based on the at least one orientation measurement and the polarization information for the different states of the antenna subsystem from the memory when the indication of the environment comprises the wireless device being in an outdoor environment; select the polarization of the antenna subsystem based on a received signal strength when the indication of the environment comprises the wireless device being in an indoor environment, wherein the received signal strength is measured using different antenna subsystem configurations; and set the polarization of the antenna subsystem to achieve the selected polarization. - View Dependent Claims (23, 24, 25)
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26. An antenna system having a selectable polarization comprising:
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one or more antennas; a memory configured to store polarization information for different switch states of the one or more antennas; and a controller configured to; couple to the one or more antennas and the memory; set the antenna system to a polarization from the selectable polarization based on at least one orientation measurement of a wireless device and the polarization information for the different states of the one or more antennas from the memory when an indication of an environment comprises the antenna system being in an outdoor environment; and set the antenna system to another polarization from the selectable polarization based on a received signal strength when the indication of the environment comprises the antenna system being in an indoor environment, wherein the received signal strength is measured using different antenna configurations. - View Dependent Claims (27, 28, 29, 30, 31)
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Specification