Method for detection of narrowband positioning reference signal (NPRS) location in radio frame

Abstract

Embodiments of the disclosure provide methods and apparatus for positioning in a wireless network. One embodiment provides a method, performed by a target device, for enabling detection of a narrowband positioning reference signal, NPRS, location in a radio frame. The method comprises: obtaining (100), from a location server, assistance data related to a neighbour cell in a reference and neighbourcell list, wherein the assistance data comprises timing offset information for the neighbour cell, determining (110) a time of a NPRS subframe for the neighbour cell and / or NPRS sequence based on thetiming offset information, measuring (120) a positioning reference signal (PRS) based on the determined time, and reporting (130) the measured PRS to the location server.

Description

technical field [0001] Embodiments herein relate to wireless communication systems, such as cellular networks. More specifically, embodiments of the present disclosure relate to target devices, location servers, network nodes, and methods performed therein. Background technique [0002] The Internet of Things (IoT) is a vision of a future world where everything that would benefit from being connected can be connected. Cellular technologies are being developed or evolved to play an integral role in the IoT world, especially Machine Type Communications (MTC). MTC is characterized by lower data rate requirements than, for example, mobile broadband, but higher requirements for, for example, low-cost device design, better coverage, and the ability to operate on batteries for years without recharging or replacing batteries. requirements. To meet IoT design goals, 3GPP standardized Narrowband Internet of Things (NB-IoT) in Release 13 with a system bandwidth of 180kHz, targeting ...

AI Technical Summary

Problems solved by technology

In order to determine the SFN or subframe number of a neighboring cell, the UE needs to read the system information of the neighboring cell, which is time-consuming and resource-consuming, but it may also be impossible because the positioning reference signal from the neighboring cell may be very weak

[0016] Based on recent NB-IoT protocols, due to large misalignment between different cells, a device may not be able to determine the time resources with NPRS transmitted by neighboring cells, or even determine the NPRS sequence (if it is based on SFN or sub-cells). frame number)

This would make it impossible for devices to perform positioning reference signal measurements for many reference neighbor cell pairs utilizing NB-IoT

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