Systems and methods for locating a mobile device using angle of arrival and inertial sensor measurements

A method of determining a location of a user equipment (UE), the method comprising:

• receiving, at a location server, location information from the UE, wherein the location information comprises information indicative of:
• a first Angle Of Arrival (AOA) measurement, taken by the UE at a first time, of Radio Frequency (RF) signals received by the UE from a first base station;
• first sensor location information measured by one or more inertial sensors of the UE, the first sensor location information indicative of movement of the UE between the first time and a second time;
• and
• a second AOA measurement, taken by the UE at the second time, of RF signals received by the UE from a second base station;
• and
• determining, by the location server, a location of the UE based, at least in part, on the information indicative of the first AOA measurement, the first sensor location information, and the second AOA measurement.

A user equipment (UE) comprising:

• a wireless communication interface;
• one or more inertial sensors;
• a memory;
• and
• one or more processing units communicatively coupled with the wireless communication interface, the one or more inertial sensors, and the memory, wherein the one or more processing units is configured to cause the UE to:
• obtain, with the wireless communication interface at a first time, a first Angle Of Arrival (AOA) measurement of Radio Frequency (RF) signals received by the UE from a first base station;
• obtain, using the one or more inertial sensors, first sensor location information indicative of movement of the UE between the first time and a second time;
• obtain, with the wireless communication interface at the second time, a second AOA measurement of RF signals received by the UE from a second base station;
• and
• provide location information to a location determining entity, the location information comprising information indicative of the first AOA measurement, the first sensor location information, and the second AOA measurement.

A location server for determining a location of a user equipment (UE), the location server comprising:

• a communication subsystem;
• a memory;
• and
• one or more processing units communicatively coupled with the communication subsystem and the memory and configured to cause the location server to:
• receive, using the communication subsystem, location information from the UE, wherein the location information comprises information indicative of:
• a first Angle Of Arrival (AOA) measurement, taken by the UE at a first time, of Radio Frequency (RF) signals received by the UE from a first base station;
• first sensor location information measured by one or more inertial sensors of the UE, the first sensor location information indicative of movement of the UE between the first time and a second time;
• and
• a second AOA measurement, taken by the UE at the second time, of RF signals received by the UE from a second base station;
• and
• determine a location of the UE based, at least in part, on the information indicative of the first AOA measurement, the first sensor location information, and the second AOA measurement.