Using geographical features to reduce in-field propagation experimentation
First Claim
1. An apparatus for determining cell coverage in a region with reduced in-field propagation measurements comprising:
- a cell phone or equivalent device comprising a code segment that obtains wireless signal strength and global positioning system coordinates;
a data base that comprises geographical features of the region; and
a processor that comprises a non-transitory computer readable medium, comprising instructions stored thereon, that when executed by a computer having a communications interface, one or more databases and one or more processors communicably coupled to the interface and one or more databases, perform the steps comprising;
predicting a number of measurements required to accurately characterize a path loss in the region by obtaining RSSI readings in terms of dBm, wherein the measurements are obtained when an API reports RSSI in terms of Arbitrary Strength Units (ASU), which quantizes obtained RSSI values in the equation;
Prx(dBm)=2*Prx(ASU)−
113
(1)
Prx(ASU)=[0,31]
(2)to determine relative path loss accuracy;
oversampling a suburban and a downtown region from cell measurements that comprise signal strength and global positioning system coordinates to determine the path loss prediction accuracy of wardriving and crowdsourcing; and
using a statistical learning framework to build a relationship between the geographical features and the measurements, thereby reducing the number of measurements needed to determine path loss accuracy.
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Abstract
The present invention includes an apparatus and method for determining cell coverage in a region with reduced in-field propagation measurements comprising: obtaining geographical features of the region; predicting the number of measurements required to accurately characterize its path loss; determining the path loss prediction accuracy of wardriving and crowdsourcing by oversampling a suburban and a downtown region from cell measurements that comprise signal strength and global positioning system coordinates; and using statistical learning to build a relationship between these geographical features and the measurements required, thereby reducing the number of measurements needed to determine path loss accuracy.
11 Citations
22 Claims
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1. An apparatus for determining cell coverage in a region with reduced in-field propagation measurements comprising:
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a cell phone or equivalent device comprising a code segment that obtains wireless signal strength and global positioning system coordinates; a data base that comprises geographical features of the region; and a processor that comprises a non-transitory computer readable medium, comprising instructions stored thereon, that when executed by a computer having a communications interface, one or more databases and one or more processors communicably coupled to the interface and one or more databases, perform the steps comprising; predicting a number of measurements required to accurately characterize a path loss in the region by obtaining RSSI readings in terms of dBm, wherein the measurements are obtained when an API reports RSSI in terms of Arbitrary Strength Units (ASU), which quantizes obtained RSSI values in the equation;
Prx(dBm)=2*Prx(ASU)−
113
(1)
Prx(ASU)=[0,31]
(2)to determine relative path loss accuracy; oversampling a suburban and a downtown region from cell measurements that comprise signal strength and global positioning system coordinates to determine the path loss prediction accuracy of wardriving and crowdsourcing; and using a statistical learning framework to build a relationship between the geographical features and the measurements, thereby reducing the number of measurements needed to determine path loss accuracy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method to determine cell coverage in a region with reduced in-field propagation measurements comprising:
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obtaining geographical features of the region; predicting a number of measurements required to accurately characterize a path loss by obtaining RSSI readings in terms of dBm, wherein the measurements are obtained when an API reports RSSI in terms of Arbitrary Strength Units (ASU), which quantizes obtained RSSI values in the equation;
Prx(dBm)=2*Prx(ASU)−
113
(1)
Prx(ASU)=[0,31]
(2)to determine relative path loss accuracy; determining the path loss prediction accuracy of wardriving and crowdsourcing by oversampling a suburban and a downtown region from cell measurements that comprise signal strength and global positioning system coordinates; and using a statistical learning framework to build a relationship between the geographical features and the measurements required, thereby reducing the number of measurements needed to determine path loss accuracy. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A computerized method for determining cell coverage in a region with reduced in-field propagation measurements, the method comprising:
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obtaining geographical features of the region; predicting a number of measurements required to accurately characterize a path loss using a processor; determining the path loss prediction accuracy of wardriving and crowdsourcing by oversampling a suburban and a downtown region from cell measurements that comprise signal strength and global positioning system coordinates with the processor; and using statistical learning to build a relationship between the geographical features and the measurements required, thereby reducing the number of measurements needed to determine path loss accuracy by obtaining RSSI readings in terms of dBm, wherein the measurements are obtained when an API reports RSSI in terms of Arbitrary Strength Units (ASU), which quantizes obtained RSSI values in the equation;
Prx(dBm) =2*Prx(ASU)−
113
(1)
Prx(ASU)=[0,31]
(2)to determine relative path loss accuracy.
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22. A non-transitory computer readable medium for determining cell coverage in a region with reduced in-field propagation measurements, comprising instructions stored thereon, that when executed by a computer having a communications interface, one or more databases and one or more processors communicably coupled to the interface and one or more databases, perform the steps comprising:
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obtaining geographical features of the region; predicting a number of measurements required to accurately characterize a path loss using a processor by obtaining RSSI readings in terms of dBm, wherein the measurements are obtained when an API reports RSSI in terms of Arbitrary Strength Units (ASU), which quantizes obtained RSSI values in the equation;
Prx(dBm) =2*Prx(ASU)−
113
(1)
Prx(ASU)=[0,31]
(2)to determine relative path loss accuracy; determining the path loss prediction accuracy of wardriving and crowdsourcing by oversampling a suburban and a downtown region from cell measurements that comprise signal strength and global positioning system coordinates with the processor; and using statistical learning to build a relationship between the geographical features and the measurements required, thereby reducing the number of measurements needed to determine path loss accuracy; and at least one of storing or displaying the results obtained thereby.
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Specification