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A backscatter communication method and related equipment

A technology of backscattering and communication methods, applied in the field of communication, which can solve the problems of affecting signal demodulation performance, waste of power consumption, and low transmission power of excitation signals

Active Publication Date: 2022-04-12
CHENGDU HUAWEI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During this process, if the transmitting power of the excitation signal of the helper device is too low, resulting in low receiving power of the Tag device or insufficient receiving signal-to-noise ratio of the Receiver, the signal demodulation performance will be affected
And if the transmission power of the excitation signal of the helper device is too high, it may lead to waste of power consumption

Method used

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  • A backscatter communication method and related equipment
  • A backscatter communication method and related equipment
  • A backscatter communication method and related equipment

Examples

Experimental program
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Embodiment Construction

[0080] Embodiments of the present application are described below with reference to the drawings in the embodiments of the present application.

[0081] See figure 1 , figure 1 It is a schematic structural diagram of a backscatter communication system provided by an embodiment of the present application. The backscatter communication system includes: a sending device (helper) sends electromagnetic waves of a certain frequency to provide energy to a backscatter device (backscatter device). The reverse communication device can also be called an electronic tag (Tag) device. The Tag device is charged by receiving the energy signal sent by the helper device, and then modulates its own information to be transmitted onto the carrier signal for transmission. The receiving device (receiver) may be a reading device, such as a reader, and the receiver device may receive the reflected signal sent by the Tag device and perform demodulation to obtain information. In some applications, the...

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PUM

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Abstract

The embodiment of the present application discloses a backscatter communication method and related equipment, including: the first equipment obtains a reference transmission power and a power offset value, and the power offset value is determined according to the capability of the electronic tag Tag equipment; The first device determines, according to the reference transmit power and the power offset value, the transmit power for sending an excitation signal to the Tag device; the first device determines, according to the transmit power of the excitation signal, Send the stimulus signal. The embodiment of the present application can improve signal demodulation performance and save power consumption.

Description

technical field [0001] The present application relates to the technical field of communication, and in particular to a backscatter communication method and related equipment. Background technique [0002] The backscatter communication (backscatter communication) system is a system that communicates by means of environmental energy. The backscatter communication system includes: a sending device (helper) sends electromagnetic waves of a certain frequency to provide energy to a backscatter device (backscatter device). The reverse communication device can also be called an electronic tag (Tag) device. The Tag device is charged by receiving the energy signal sent by the helper device, and then modulates its own information to be transmitted onto the carrier signal for transmission. The receiving device (receiver) can also be called a reader, which receives the data sent by the Tag device and demodulates it to obtain information. During this process, if the transmitting power o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/18H04W52/24H04W52/28H04W52/02H04W52/54H04B5/00
CPCH04W52/18H04W52/24H04W52/28H04W52/283H04W52/281H04W52/0209H04W52/54H04B5/77H04B5/45H04W52/02G06K7/00
Inventor 邵华黄煌陈磊颜矛
Owner CHENGDU HUAWEI TECH