EP-4740351-A1 - SYSTEMS, METHODS, AND NON-TRANSITORY COMPUTER-READABLE MEDIA FOR IDENTIFYING A-IOT DEVICES

EP4740351A1EP 4740351 A1EP4740351 A1EP 4740351A1EP-4740351-A1

Abstract

The present disclosure relates to systems, apparatuses, methods, and non-transitory computer-readable media for receiving, by a network function from each of a plurality of Base Stations (BSs), transmit signal configuration for a signal transmitted by each of the plurality of BSs to a respective one of a plurality of Ambient power-enabled Internet of Things (A-IoT) devices, sending, by the network function, a transmit signal configuration list comprising the transmit signal configuration received from each of the plurality of BSs; and sending, to at least one of the plurality of A-IoT devices, backscatter configuration indicating a mapping relationship between the signal received by the at least one of the plurality of A-IoT devices and a backscatter reflected by the at least one of the plurality of A-IoT devices.

Inventors

SHI, Rongwei
JIANG, Chuangxin
DAI, BO
WANG, CONG
PENG, FOCAI
LOU, Junpeng

Assignees

ZTE Corporation

Dates

Publication Date: 20260513
Application Date: 20230824

Claims (20)

A method, comprising: receiving, by a network function from each of a plurality of Base Stations (BSs) , transmit signal configuration for a signal transmitted by each of the plurality of BSs to a respective one of a plurality of Ambient power-enabled Internet of Things (A-IoT) devices; sending, by the network function, a transmit signal configuration list comprising the transmit signal configuration received from each of the plurality of BSs; and sending, to at least one of the plurality of A-IoT devices, backscatter configuration indicating a mapping relationship between the signal received by the at least one of the plurality of A-IoT devices and a backscatter reflected by the at least one of the plurality of A-IoT devices.
The method of claim 1, wherein the backscatter configuration comprises a reflection parameter configured by the network function for different ones of the plurality of A-IoT devices; and the backscatter configuration being sent by the network function to the at least one of the plurality of A-IoT devices via a Long Term Evolution Positioning Protocol (LPP) message.
The method of claim 1, wherein the backscatter configuration comprises a reflection parameter configured by the network function for different ones of the plurality of A-IoT devices; sending the backscatter configuration comprises: sending, by the network function to at least one of the plurality of BSs, the backscatter configuration via a New Radio Positioning Protocol A (NRPPa) message, wherein the at least one of the plurality of BSs sends the backscatter configuration to the least one of the plurality of A-IoT devices via a Radio Resource Control (RRC) message.
The method of claim 3, wherein the reflection parameter comprises all transmit signal resource configuration parameters for the plurality of BSs.
The method of claim 1, wherein a first A-IoT device of the plurality of A-IoT devices comprises a Type A A-IoT device, the first A-IoT device reflects the signal received from a respective one of the plurality of BSs immediately in response to receiving the signal.
The method of claim 1, wherein a second A-IoT device of the plurality of A-IoT devices comprises a Type B A-IoT device or a Type C A-IoT device, the second A-IoT device stores a received energy of the signal received from a respective one of the plurality of BSs and reflects the signal in response to reaching an energy threshold for reflecting the signal.
The method of claim 1, wherein in response to receiving the transmit signal configuration list, each of at least one of the plurality of BSs determines the backscatter configuration applicable to a cell of each of the at least one of the plurality of BSs; and each of the at least one of the plurality of BSs sends the backscatter configuration to the at least one of the plurality of A-IoT devices.
The method of claim 1, wherein the transmit signal configuration list is sent to a plurality of wireless communication devices; and the backscatter configuration is determined and sent by at least one of the plurality of wireless communication devices to the at least one of the plurality of A-IoT devices via sidelink.
The method of claim 8, wherein the backscatter configuration is exchanged by the at least one of the plurality of wireless communication devices with other ones of the plurality of wireless communication devices via the sidelink.
The method of claim 1, wherein the backscatter configuration is determined by each of the at least one of the plurality of A-IoT devices, and the at least one of the plurality of A-IoT devices sends the backscatter configuration to at least one of the plurality of BSs in a Radio Resource Control (RRC) message or to the network function in Long Term Evolution Positioning Protocol (LPP) message.
The method of claim 10, wherein the at least one of the plurality of A-IoT devices generates and reports the backscatter configuration independently; and each of the at least one of the plurality of A-IoT devices comprises a Type C A-IoT device.
The method of claim 1, wherein a network node receives a first backscatter reflected by a first A-IoT device of the at least one of the plurality of A-IoT devices with a first angle offset and a second backscatter reflected by a second A-IoT device of the at least one of the plurality of A-IoT devices with a second angle offset; the backscatter configuration comprises a set of backscatter angle parameters, the set of backscatter angle parameters comprises at least a set of angle offsets to be backscattered or a backscatter angle offset.
The method of claim 1, wherein a network node receives a first backscatter reflected by a first A-IoT device of the at least one of the plurality of A-IoT devices at a first reflection time and a second backscatter reflected by a second A-IoT device of the at least one of the plurality of A-IoT devices at a second reflection time; the backscatter configuration comprises a set of energy threshold offsets, wherein the first reflection time and second reflection time are determined according to the set of energy threshold offsets.
The method of claim 1, wherein a network node receives a first backscatter reflected by a first A-IoT device of the at least one of the plurality of A-IoT devices using a first center frequency and a second backscatter reflected by a second A-IoT device of the at least one of the plurality of A-IoT devices using a second center frequency; the backscatter configuration comprises at least one of a set of frequencies to be backscattered, a backscatter frequency, a set of frequency offsets to be backscattered, a backscatter frequency offset, a number of frequencies or frequency offsets to be backscattered, or a carrier frequency spacing.
The method of claim 14, wherein the first center frequency and the second center frequency are shifted using respective absolute values; or the first center frequency and the second center frequency are shifted using respective relative offsets with respect to a center frequency of the transmitted signal.
The method of claim 14, wherein the carrier frequency spacing reduces an interference between the first A-IoT device and the second A-IoT device.
The method of claim 1, wherein a network node receives a first backscatter reflected by a first A-IoT device of the at least one of the plurality of A-IoT devices using a first On Off Keying (OOK) code and a second backscatter reflected by a second A-IoT device of the at least one of the plurality of A-IoT devices using a second OOK code; and the backscatter configuration comprises at least one of an encoding rule, a backscatter OOK code, a Pulse Width (PW) , a signal level threshold, or another suitable parameter.
The method of claim 1, wherein a network node receives the backscatter reflected by two or more of the plurality of A-IoT devices, and the network node jointly processes the backscatter in two or more of a spatial domain, a time domain, a frequency domain, or a code domain.
The method of claim 1, wherein the backscatter configuration comprises a first reflection parameter for reflecting the signal for communication and a second reflection parameter for reflecting the signal for positioning; a network node receives a first backscatter corresponding to the signal for the communication in a narrow band; and the network node receives a second backscatter corresponding to the signal for the positioning without bandpass filtering.
The method of claim 1, wherein the backscatter configuration comprises an indicator and a cell ID; the indicator indicates to the at least one of the plurality of A-IoT devices to backscatter the signal using one of method a time-domain method, a frequency-domain method, or a code-domain method) ; a parameter indicating the method is determined a sequence ID carried by the at least one of the plurality of A-IoT devices; and the cell ID is used to report group information of the at least one of the plurality of A-IoT devices covered by the network node.

Description

SYSTEMS, METHODS, AND NON-TRANSITORY COMPUTER-READABLE MEDIA FOR IDENTIFYING A-IOT DEVICES TECHNICAL FIELD The disclosure relates generally to wireless communications, and in particular to systems, methods, and non-transitory computer-readable media for identifying Ambient power-enabled Internet of Things (A-IoT) devices. BACKGROUND A-IoT devices utilize environment energy harvesting and backscattering technology to maintain self-operation and deliver information to other devices. As power supply modules are not needed, A-IoT technology has promising research prospect and widespread application. However, for the ultra-low power consumption and complexity, conventional technology cannot recognize different A-IoT devices from a long distance (e.g., more than 100 m) away. SUMMARY The example arrangements disclosed herein are directed to solving the issues relating to one or more of the problems presented in the prior art, as well as providing additional features that will become readily apparent by reference to the following detailed description when taken in conjunction with the accompany drawings. In accordance with various arrangements, example systems, methods, devices and computer program products are disclosed herein. It is understood, however, that these arrangements are presented by way of example and are not limiting, and it will be apparent to those of ordinary skill in the art who read the present disclosure that various modifications to the disclosed arrangements can be made while remaining within the scope of this disclosure. Some arrangements of the present disclosure relate to systems, methods, apparatuses, and non-transitory computer-readable media for receiving, by a network function from each of a plurality of Base Stations (BSs) , transmit signal configuration for a signal transmitted by each of the plurality of BSs to a respective one of a plurality of Ambient power-enabled Internet of Things (A-IoT) devices, sending, by the network function, a transmit signal configuration list comprising the transmit signal configuration received from each of the plurality of BSs; and sending, to at least one of the plurality of A-IoT devices, backscatter configuration indicating a mapping relationship between the signal received by the at least one of the plurality of A-IoT devices and a backscatter reflected by the at least one of the plurality of A-IoT devices. Some arrangements of the present disclosure relate to systems, methods, apparatuses, and non-transitory computer-readable media for sending, by a Base Station (BS) to a network function, transmit signal configuration for a signal transmitted by the BS to a respective one of a plurality of Ambient power-enabled Internet of Things (A-IoT) devices, receiving, by the BS, a transmit signal configuration list comprising the transmit signal configuration received from each of a plurality of BSs; and, sending, by the BS to at least one of the plurality of A-IoT devices, backscatter configuration indicating a mapping relationship between the signal received by the at least one of the plurality of A-IoT devices and a backscatter reflected by the at least one of the plurality of A-IoT devices. The above and other aspects and their implementations are described in greater detail in the drawings, the descriptions, and the claims. BRIEF DESCRIPTION OF THE DRAWINGS Various example arrangements of the present solution are described in detail below with reference to the following figures or drawings. The drawings are provided for purposes of illustration only and merely depict example arrangements of the present solution to facilitate the reader's understanding of the present solution. Therefore, the drawings should not be considered limiting of the breadth, scope, or applicability of the present solution. It should be noted that for clarity and ease of illustration, these drawings are not necessarily drawn to scale. FIG. 1A is a flowchart diagram illustrating an example method for configuring backscatter by A-IoT devices, according to various arrangements. FIG. 1B is a flowchart diagram illustrating an example method for configuring backscatter by A-IoT devices, according to various arrangements. FIG. 2 is a signaling diagram illustrating an example method for configuring communications of an A-IoT device, according to various arrangements. FIG. 3 is a signaling diagram illustrating an example method for configuring communications of an A-IoT device, according to various arrangements. FIG. 4 is a signaling diagram illustrating an example method for configuring communications of an A-IoT device, according to various arrangements. FIG. 5 is a signaling diagram illustrating an example method for configuring communications of an A-IoT device, according to various arrangements. FIG. 6 is a signaling diagram illustrating an example method for configuring communications of an A-IoT device, according to various arrangements. FIG. 7 is a signaling diagram illu