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Mobile equipment positioning and tracking method based on multiple intelligent reflecting surfaces

A mobile device and reflective surface technology, applied in location-based services, wireless communications, electrical components, etc., can solve problems that affect the tracking performance of mobile devices and do not use the location correlation of target devices

Active Publication Date: 2022-04-05
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

However, traditional device localization techniques perform localization on each time slot individually (“H. Zhang, H. Zhang, B. Di, K. Bian, Z. Han, and L. Song,” Metalocalization: Reconfigurable intelligent surface aided multi -user wireless indoorlocalization,"IEEE Trans.Wireless Commun., Jun.2021, early access", "W.Wang and W.Zhang,"Joint beam training and positioning for intelligent reflecting surfaces assisted millimeter wave communications,"IEEE Trans.WirelessCommun., vol.20, no. 10, pp.6282-6297, Apr.2021"), did not take advantage of the time correlation of the target device location, which greatly affected the tracking performance of mobile devices

Method used

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  • Mobile equipment positioning and tracking method based on multiple intelligent reflecting surfaces
  • Mobile equipment positioning and tracking method based on multiple intelligent reflecting surfaces
  • Mobile equipment positioning and tracking method based on multiple intelligent reflecting surfaces

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Embodiment Construction

[0074] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0075] The parameters of the specific method are set as follows:

[0076] In this specific implementation method, there are 7 linear array smart reflective surfaces, they have 32 reflective units, and are deployed at (-35m, 5m, -10m), (-30m, 20m, 10m), (-20m, 25m , 20m), (-10m, 40m, 10m), (0m, 20m, 10m), (10m, 15m, 20m), (30m, 20m, 5m); their antenna directions are (0, 1, 0 respectively) ), (1, 0, 0), (1, 0, 0), (1, 0, 0), (1, 0, 0), (1, 0, 0), (0, 1, 0). The base station has 32 antennas and is deployed at (20m, 0m, 0m), and its antenna direction is (1, 0, 0). The mobile device has 17 antennas and the antenna direction is known as (1, 0, 0). The carrier frequency of the wireless signal is 28GHz, and the power of the additive white Gaussian noise at the receiver is -84dBm.

[0077] The mobile device is confined to ...

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Abstract

The invention belongs to the technical field of wireless communication and the field of equipment positioning, and particularly relates to a mobile equipment positioning and tracking method and system based on multiple intelligent reflectors (RIS). A plurality of intelligent reflecting surfaces are deployed in a wireless environment to provide a virtual sight distance path, a multi-intelligent reflecting surface assisted multi-input multi-output system is constructed, and positioning and tracking of mobile equipment are realized under the system. By using the geometrical relationship between the equipment position and the arrival angle of the received signal and the relevance of the equipment position between adjacent time slots, the invention provides a user positioning and tracking algorithm under the Bayesian framework to realize the high-precision tracking of the mobile user. In addition, the invention provides an intelligent reflecting surface beamforming design and a base station beamforming design based on the Bayesian Cramer-Rao lower bound so as to further improve the tracking precision.

Description

technical field [0001] The present invention relates to the technical field of wireless communication and the field of device positioning, and in particular, to a method for positioning and tracking mobile devices based on multi-intelligent reflective surfaces. Background technique [0002] 6G mobile communication and its emerging application scenarios such as Internet of Vehicles (IoV), Augmented Reality (AR), Virtual Reality (VR), and Unmanned Aerial Vehicle (UAV) communications have a huge potential demand for high-precision positioning of mobile devices. . Wymeersch, D. Shrestha, C. M. de Lima, V. Yajnanarayana, B. Richerzhagen, M.F. Keskin, K. Schindhelm, A. Ramirez, A. Wolfgang, M.F. de Guzman et al., “Integration of communication and sensing in 6G:a joint industrial and academic perspective, “in IEEE PIMRC Workshops, Sep. 2021, pp. 1–7”. The 6G mobile communication technology uses a larger antenna array and has a wider spectrum bandwidth, which enables the signal to ...

Claims

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Application Information

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IPC IPC(8): H04W64/00H04W4/029
Inventor 袁晓军滕博宇
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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