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

Continuous phase modulation intelligent metasurface, beam forming method and fast beam tracking method

A beamforming method and metasurface technology, applied in the field of communication, can solve problems such as time delay, control cost waste, energy loss, etc., and achieve the effect of maximizing data rate, precise beam direction, and high-speed network service

Pending Publication Date: 2021-12-03
杭州腓腓科技有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Limited number of cell states, resulting in insufficient beamforming accuracy
Since the number of unit states of the RIS unit is limited, the result of beamforming is only the optimal solution that the current RIS unit can achieve, not the optimal solution required by beamforming, which will cause a certain energy loss and affect the communication effect
If the beam accuracy is improved by increasing the number of unit states, it will be more difficult to design. At the same time, with the complexity of the design structure, the anti-interference ability of the reconfigurable smart surface RIS will also be weakened.
[0005] A certain number of unit states will lead to an increase in the cost of RIS control for reconfigurable smart surfaces
For different beam accuracy requirements, since the number of unit states is determined, the control cost of the reconfigurable smart surface RIS is not much different. For tasks that do not require high precision, the control cost is a waste and will cause some unnecessary time delay

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
  • Continuous phase modulation intelligent metasurface, beam forming method and fast beam tracking method
  • Continuous phase modulation intelligent metasurface, beam forming method and fast beam tracking method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The continuous phase modulation smart metasurface provided by the embodiment of the present invention is based on the reconfigurable smart metasurface RIS, replacing some of the ordinary diodes on the reconfigurable smart metasurface RIS with continuous phase modulation devices, and performing a certain obtained after the design.

[0039] Wherein, the continuous phase modulation smart metasurface includes a subwavelength near passive scattering unit and an improved subwavelength near passive scattering unit; wherein, the diode of the subwavelength near passive scattering unit and the improved subwavelength near passive scattering unit The continuous phase modulating device of the passive scattering unit is different.

[0040] Further, the continuous phase modulating device of the improved sub-wavelength near passive reflection unit is a varactor diode, liquid crystal or ferrite.

[0041] During operation, by changing the bias voltage applied to the continuous phase mod...

Embodiment 2

[0044] An embodiment of the present invention provides a beamforming method based on the continuous phase modulation smart metasurface described in Embodiment 1, such as figure 1 shown, including the following steps:

[0045] Step 10: Keep the analog beamforming matrix unchanged and optimize the digital beamforming matrix. Wherein, the simulated beamforming matrix is ​​used to characterize configuration parameter values ​​of the continuous phase modulation smart metasurface; the configuration parameter values ​​at least include phase.

[0046] Step 20: Obtain optimized analog beamforming moments according to the optimized digital beamforming matrix.

[0047] Step 30: Perform mutual optimization on the optimized digital beamforming matrix and the optimized analog beamforming matrix to obtain an optimal digital beamforming matrix and an optimal analog beamforming matrix.

[0048] Further, step 30 provided in this embodiment specifically includes:

[0049]Mutual iterative opti...

Embodiment 3

[0058] Consider a wireless communication system containing the continuous phase modulation smart metasurface described in Embodiment 1. The continuous phase modulation smart metasurface is installed on a base station, and users move dynamically in the wireless communication system. In order to provide users with high-speed and stable network services, it is necessary to continuously change the beam direction according to the user's location.

[0059] An embodiment of the present invention provides a fast beam tracking method based on the continuous phase modulation smart metasurface described in Embodiment 1. The above-mentioned base station obtains the optimal initialization phase of the continuous phase modulation smart metasurface through the ergodic method, and provides services for users. Afterwards, in each time slot, the UE detects whether its received power reaches the preset threshold. If it reaches the preset threshold, the UE continues to use the beamforming scheme ...

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

The invention discloses a continuous phase modulation intelligent metasurface, a beam forming method and a fast beam tracking method, and relates to the technical field of communication. According to the continuous phase modulation intelligent metasurface, on the basis of a reconfigurable intelligent surface RIS, part of diodes in the reconfigurable intelligent surface RIS are replaced by continuous phase modulation devices to obtain the continuous phase modulation intelligent metasurface. During working, the equivalent capacitance value of the continuous phase modulation device is changed by changing the bias voltage applied to the continuous phase modulation device, so that the reflection coefficient is changed. According to the beam forming method and the fast beam tracking method based on the continuous phase modulation intelligent metasurface design, the mobility of users in a wireless communication system is fully considered, dynamic beam forming can be provided for the users through adjustment of reflection coefficients, and then high-speed network service is provided for the dynamically moving users.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a continuous phase modulation intelligent metasurface, a beam forming method and a fast beam tracking method. Background technique [0002] Recent developments in metasurfaces offer a promising method for capacity enhancement in sixth-generation mobile communication networks. The traditional reconfigurable intelligent surface (Reconfigurable Intelligent Surfaces, RIS, hereinafter referred to as RIS) is an ultra-thin surface containing multiple sub-wavelength near-passive scattering units, which has controllable electromagnetic properties and makes the propagation environment controllable. Refactorability. [0003] The traditional sub-wavelength near-passive scattering unit (hereinafter referred to as RIS unit) has a finite number of unit states, and the reflection phase also has several finite values. Usually, an n-bit RIS unit indicates that there are 2n RIS units in the...

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
IPC IPC(8): H04B7/06H01Q15/00
CPCH04B7/0617H01Q15/0086
Inventor 张雨童邓若琪张浩波
Owner 杭州腓腓科技有限公司