Positioning support information for time of arrival (TOA) estimation in possible multipath propagation conditions

• Main Authors: Ryden, Henrik, Gunnarsson, Fredrik, Modarres Razavi, Sara, Sunell, Kai-Erik
• Format: Patent
• Language: English
• Published: 26.12.2023
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING; WIRELESS COMMUNICATIONS NETWORKS

There is provided a method for providing Observed Time Difference of Arrival (OTDOA) Reference Signal Time Difference (RSTD) measurements from a wireless device to a location server. The method includes sending, from the wireless node to the location server, a capability to support OTDOA location measurements using multipath RSTD, receiving, at the wireless node, a request for OTDOA location measurements using multipath RSTD, from the location server. The method includes receiving, at the wireless node, assistance data providing details of required OTDOA location measurements using multipath RSTD from the location server, receiving, at the wireless node, a signal from an RSTD reference cell and a neighbor cell. The method includes observing, at the wireless node, a time difference between the received signals thereby obtaining the required OTDOA location measurements using multipath RSTD and sending the required OTDOA location measurements using multipath RSTD from the wireless node to the location server.