Unlock instant, AI-driven research and patent intelligence for your innovation.

Cooperative positioning method and system based on RIS assistance

A technology for co-location and covariance estimation. It is applied in location-based services, advanced technologies, climate sustainability, etc. It can solve the problems of not considering multi-user scenarios and low user positioning accuracy, and achieve efficient transmit beamforming. , to improve the accuracy and flexibility of the effect

Active Publication Date: 2022-03-25
ZHEJIANG UNIV
View PDF9 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] This application provides a RIS-based co-location method, system and storage medium to at least solve the problems in related technologies that do not consider multi-user scenarios, user positioning accuracy lower technical issues

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Cooperative positioning method and system based on RIS assistance
  • Cooperative positioning method and system based on RIS assistance
  • Cooperative positioning method and system based on RIS assistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] figure 2 It is a schematic flowchart of a RIS-assisted co-location method provided according to an embodiment of the present application, such as figure 2 As shown, can include:

[0038] Step S1, acquiring received signals of different links satisfying a preset transmission protocol.

[0039] It should be noted that, in the embodiments of the present disclosure, obtaining the received signals of different links satisfying the preset transmission protocol may include obtaining the reflected link signal reflected by the AP (AccessPoint, access point) through the RIS and obtaining the cooperative communication between UEs link signal.

[0040] Wherein, in the embodiments of the present disclosure, due to signal fading in free space and blocking between the AP and the UE, the reflective link of the AP-RIS-user mainly considers the LOS channel.

[0041] And, in the embodiments of the present disclosure, image 3 A schematic structural diagram of a preset transmission p...

Embodiment 2

[0148] Figure four It is a schematic structural diagram of a RIS-assisted co-location device provided according to an embodiment of the present application, such as Figure 4 As shown, can include:

[0149] An acquisition module 401, configured to acquire received signals of different links satisfying a preset transmission protocol;

[0150] An estimation module 402, configured to estimate channel parameters according to the received signal;

[0151] The construction module 403 is used for constructing the optimization problem of the RIS phase parameter of the reconfigurable smart surface by using the covariance estimation theory according to the estimated channel parameters;

[0152] The processing module 404 is used to solve the optimization problem through the BCD algorithm, and output the RIS phase configuration parameters;

[0153] The output module 405 is configured to adjust the RIS phase configuration according to the RIS phase configuration parameters until the op...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

According to the RIS assistance-based cooperative positioning method and system and the storage medium provided by the invention, the received signals, meeting the preset transmission protocol, of different links are acquired, the channel parameters are estimated according to the received signals, and the optimization problem of the reconfigurable intelligent surface RIS phase parameters is constructed by using the covariance estimation theory according to the estimated channel parameters, so that the RIS assistance-based cooperative positioning is realized. And solving an optimization problem through a BCD algorithm, outputting RIS phase configuration parameters, adjusting RIS phase configuration according to the RIS phase configuration parameters, repeatedly executing the previous steps until the optimization problem converges, and outputting position information. Therefore, in the method provided by the invention, efficient transmitted beam forming is realized, the accuracy of user positioning is improved, and the situation that the UE can determine the position information of the UE by acquiring the cooperative communication among the UE when a plurality of pieces of UE are online at the same time is considered, so that the position information of the UE can be determined by the cooperative communication among the UE when the power is limited, and the flexibility is relatively high.

Description

technical field [0001] The present application relates to the technical field of wireless positioning, and in particular to a RIS-assisted coordinated positioning method, system and storage medium. Background technique [0002] From the mobile Internet to the Internet of Things, location is a basic and indispensable information. For location-based applications (such as navigation, healthcare monitoring, and indoor positioning), only higher-precision positioning information can bring higher value, leading to a growing interest in high-precision positioning. [0003] The next-generation, sixth-generation (6G) wireless communication technology is expected to offer great opportunities for ultra-high precision wireless positioning due to its very high carrier frequency (e.g., in the millimeter wave (mmWave) band) and the large-scale antenna arrays equipped with it. On the one hand, millimeter-scale wavelengths allow a large number of antennas to be integrated on antenna arrays w...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/02H04W64/00
CPCH04W4/023H04W64/00Y02D30/70
Inventor 程谦儒李立言赵明敏赵民建李绍标
Owner ZHEJIANG UNIV