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A Hierarchical Multiple Access Method for Ambient Backscatter Networks

A technology of backscattering and access methods, applied in the field of communication, can solve problems such as failure to achieve optimization goals and solutions, and achieve the effect of improving throughput and reducing network delay

Active Publication Date: 2021-04-23
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing technical scheme considers the maximum and minimum group throughput optimization problem, it does not solve it directly, but solves it according to the self-defined grouping criterion and conventional beamforming, so the expected optimization goal cannot be achieved

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  • A Hierarchical Multiple Access Method for Ambient Backscatter Networks
  • A Hierarchical Multiple Access Method for Ambient Backscatter Networks
  • A Hierarchical Multiple Access Method for Ambient Backscatter Networks

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Embodiment Construction

[0012] In order to make the purpose, technical solution, design method and advantages of the present invention clearer, the present invention will be further described in detail through specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0013] In all examples shown and discussed herein, any specific values ​​should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have different values.

[0014] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.

[0015] The invention provides a layered multiple access method based on the environment backscattering wireless network. In shor...

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Abstract

The invention provides a layered multiple access method for an environmental backscattering network. The method includes: the access point constructs a layered multiple access model of a joint beamforming layer and a non-orthogonal multiple access layer; designing an optimization that maximizes the minimum group throughput for the layered multiple access model problem, by solving the optimization problem to obtain the grouping strategy of the beamforming layer and optimally control the reflected power of the backscattering nodes; the beamforming layer divides the signals from a plurality of backscattering nodes based on the grouping strategy There are multiple groups; the non-orthogonal multiple access layer uses a continuous interference cancellation mechanism to decode signals in each group. The method of the invention can obtain better grouping and backscattering coefficients, thereby improving the throughput of the entire network and reducing network delay.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a layered multiple access method for an environmental backscattering network. Background technique [0002] The Internet of Things (IoT) has been widely deployed in various applications such as logistics, industrial control, healthcare, smart home or city, and environmental monitoring. Most wireless devices are powered by charging or battery replacement, which is labor-intensive and expensive. Therefore, energy supply and sustainability have been considered as key issues for the further application of IoT. In recent years, backscatter communication has been introduced as a very promising technology in power-constrained wireless networks due to its extremely low power consumption. Unlike conventional radios, which rely on a carrier signal they generate to communicate, backscatter devices transmit information by bouncing radio frequency signals and typically consume only a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/02H04B7/06H04B7/08
CPCH04B7/0617H04B7/086H04W24/02
Inventor 李兰花黄晓霞汪漪
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI