Systems and methods for location by a mobile device in a fifth generation wireless network

A user equipment (UE) capable of performing location determination of the UE, the UE comprising:

• a wireless transceiver configured to wirelessly communicate with base stations in a Radio Access Network (RAN);
• at least one memory;
• at least one processor coupled to the wireless transceiver and the at least one memory, wherein the at least one processor is configured to:
• measure Reference Signal Time Differences (RSTDs) at a first periodic interval of signals received via the wireless transceiver from a plurality of base stations in the Radio Access Network (RAN);
• receive, via the wireless transceiver, location information from a network entity at a second periodic interval;
• obtain Round Trip Time (RTT) measurements for the plurality of base stations at the second periodic interval, based on the location information received from the network entity;
• determine Real Time Differences (RTDs) at the second periodic interval for pairs of base stations in the plurality of base stations based on the measured RSTDs and the RTT measurements;
• and
• determine a location of the UE at the first periodic interval using Observed Time Difference of Arrival (OTDOA) based on the RSTDs and most recent RTDs, wherein the first periodic interval is shorter than the second periodic interval.

A user equipment (UE) capable of performing location determination of the UE, the UE comprising:

• means for measuring Reference Signal Time Differences (RSTDs) at a first periodic interval for a plurality of base stations in a Radio Access Network (RAN);
• means for receiving location information from a network entity at a second periodic interval;
• means for obtaining Round Trip Time (RTT) measurements for the plurality of base stations at the second periodic interval, based on the location information received from the network entity;
• means for determining Real Time Differences (RTDs) at the second periodic interval for pairs of base stations in the plurality of base stations based on the measured RSTDs and the RTT measurements;
• and
• means for determining a location of the UE at the first periodic interval using Observed Time Difference of Arrival (OTDOA) based on the RSTDs and most recent RTDs, wherein the first periodic interval is shorter than the second periodic interval.

A non-transitory storage medium including program code stored thereon, the program code is operable to cause at least one processor in a user equipment (UE) to perform location determination for the UE, comprising:

• program code to measure Reference Signal Time Differences (RSTDs) at a first periodic interval for a plurality of base stations in a Radio Access Network (RAN);
• program code to receive location information from a network entity at a second periodic interval;
• program code to obtain Round Trip Time (RTT) measurements for the plurality of base stations at the second periodic interval, based on the location information received from the network entity;
• program code to determine Real Time Differences (RTDs) at the second periodic interval for pairs of base stations in the plurality of base stations based on the measured RSTDs and the RTT measurements;
• and
• program code to determine a location of the UE at the first periodic interval using Observed Time Difference of Arrival (OTDOA) based on the RSTDs and most recent RTDs, wherein the first periodic interval is shorter than the second periodic interval.