Invention Grant
- Patent Title: Apparatus, systems and methods for mobile network positioning of MTC devices using common reference or synchronization signals
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Application No.: US14806091Application Date: 2015-07-22
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Publication No.: US09877161B2Publication Date: 2018-01-23
- Inventor: Magnus Persson , Basuki Priyanto , Peter C. Karlsson
- Applicant: Sony Corporation
- Applicant Address: JP Tokyo JP Tokyo
- Assignee: Sony Corporation,Sony Mobile Communications Inc.
- Current Assignee: Sony Corporation,Sony Mobile Communications Inc.
- Current Assignee Address: JP Tokyo JP Tokyo
- Agency: Moore & Van Allen PLLC
- Agent James C. Edwards
- Main IPC: H04W24/00
- IPC: H04W24/00 ; H04W4/02 ; G01S5/00 ; G01S5/06 ; H04W4/00 ; H04W64/00

Abstract:
Embodiments improve User Equipment (UE) positioning accuracy in a mobile communication system by providing for a UE configured to listen for Positioning Reference Signal (PRS) transmissions within an operating bandwidth around Direct Current (DC) sub-carrier and at least one non-PRS transmission including, for example, a CRS or PSS/SSS; receiving, at the UE, PRS and non-PRS(s) transmissions transmitted from base stations within the operating bandwidth; performing, at the UE, Time of Arrival (TOA) measurements for each of the plurality of base stations, wherein the TOA measurements are determined based on the at least one non-PRS transmission; obtaining Observed Time Difference of Arrival (OTDOA) measurements by subtracting TOA for the plurality of base stations from a TOA for a reference base station, and transmitting, from the UE to a Location Server (LS), the OTDOA measurements, wherein the LS performs a positioning estimation of the UE based on the OTDOA measurements.
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