Method for enhanced mobile assisted positioning
AssigneeInterDigital Technology Corporation
InventorsMarian Rudolf, Christopher Cave, Juan Carlos Zuniga
Life of this patent
Estimating the term…
Abstract
At a first user equipment (UE), an uplink signal is received of at least one second UE is received and time marked. At the first UE, a downlink signal from at least one base station is received and time marked. Observed time differences of arrival are determined using the time markings. A position of the first UE is determined based on the determined time differences of arrival.
Claims13
A method for determining a position of a mobile user equipment (UE) in a wireless communication system having uplink and downlink transmissions between UEs and at least one base station in the system, the method comprising:
- at a first mobile UE, receiving and time marking an uplink signal of at least one second UE;
- at the first UE, receiving and time marking a downlink signal from at least one base station;
- determining observed time difference of arrivals using the time markings;
- and
- calculating the first UE position based on the determined time difference of arrivals.
A wireless mobile user equipment (UE) comprising:
- an uplink and downlink receiver for receiving uplink and downlink signals;
- a time difference calculation device for determining a time difference between the received uplink and downlink signals;
- and
- a signaling device for signaling the determined time differences.
A radio network controller (RNC) comprising:
- a positioning device configured to receive an indicator of an observed time difference of arrival (OTDOA) between a second user equipment (UE) and a base station as measured at a first UE and the positioning device determining a location of the first UE using the OTDOA between the second UE and the base station and a known location of the base station and the second UE.
Dependencies are inferred from the claim text.