Signal receiving method and apparatus, signal transmitting method and apparatus, and storage medium

Abstract

A signal receiving method and apparatus, a signal transmitting method and apparatus, and a storage medium. The signal transmitting method comprises: transmitting a first positioning signal, wherein the first positioning signal and a second positioning signal are backscattered by a third device (103) and are used for positioning the third device (103), the first positioning signal is transmitted by a first device (101), the second positioning signal is transmitted by a second device (102), and the position of the first device (101) is different from the position of the second device (102). The problem of how to position the third device (103) is solved. The first device (101) and the second device (102), which are at different positions, implement the positioning of the third device (103) by means of transmitting different positioning signals, thereby ensuring that the third device (103) can backscatter the positioning signals, which are transmitted from different positions, and accordingly ensuring the accuracy of positioning the third device (103).

Description

Signal transmission and reception methods, devices and storage media Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to signal transmission and reception methods, apparatus, and storage media. Background Technology

[0002] With the rapid development of mobile communication technology and Internet of Things (IoT) technology, the signals of devices in IoT technology can be used to sense and locate objects, ensuring the accuracy of object location.

[0003] Summary of the Invention

[0004] The solution provided in this disclosure solves the problem of how to locate a third device. The first and second devices at different locations locate the third device by sending different positioning signals, ensuring that the third device can backscatter the positioning signals sent from different locations, thereby ensuring the accuracy of locating the third device.

[0005] This disclosure provides a signal transmission and reception method, apparatus, and storage medium.

[0006] According to a first aspect of the present disclosure, a signal transmission method is provided, the method being performed by a first device, the method comprising:

[0007] A first positioning signal is sent, and the first positioning signal and a second positioning signal are used for backscattering by a third device to locate the third device. The second positioning signal is sent by a second device, and the position of the first device is different from the position of the second device.

[0008] According to a second aspect of the present disclosure, a signal receiving method is provided, the method being executed by a third device, the method comprising: receiving a first positioning signal and a second positioning signal, wherein the first positioning signal is sent by a first device, the second positioning signal is sent by a second device, and the positions of the first device and the second device are different.

[0009] The first positioning signal and the second positioning signal are backscattered, and the first positioning signal and the second positioning signal are used to locate the third device.

[0010] According to a third aspect of the present disclosure, a signal receiving method is provided, the method being executed by a fourth device, the method comprising: receiving a third positioning signal, the third positioning signal comprising a signal generated by the third device through backscattering a first positioning signal and a second positioning signal, wherein the frequency position of the first positioning signal is different from the frequency position of the second positioning signal, the first positioning signal is sent by a first device, the second positioning signal is sent by a second device, and the position of the first device is different from the position of the second device;

[0011] Time information is obtained based on the third positioning signal, and the time information includes the reception time of any one of the third positioning signals or the time difference between the reception times of any two positioning signals included in the third positioning signal.

[0012] According to a fourth aspect of the present disclosure, a signal receiving method is provided, the method being performed by a fifth device, the method comprising: receiving time information, the time information being acquired by the fourth device based on a received third positioning signal, the third positioning signal including a signal generated by the third device through backscattering a first positioning signal and a second positioning signal, the first positioning signal being sent by a first device, the second positioning signal being sent by a second device, the positions of the first device and the second device being different, the time information including the reception time of any one of the third positioning signals or the time difference between the reception times of any two positioning signals included in the third positioning signal;

[0013] The third device is located based on the time information.

[0014] According to a fifth aspect of the present disclosure, a signal transmitting apparatus is provided, comprising:

[0015] The transceiver module is used to send a first positioning signal. The first positioning signal and the second positioning signal are used for backscattering by a third device to locate the third device. The second positioning signal is sent by a second device. The position of the first device is different from the position of the second device.

[0016] According to a sixth aspect of the present disclosure, a signal receiving device is provided, comprising: a transceiver module for receiving a first positioning signal and a second positioning signal, wherein the first positioning signal is sent by a first device and the second positioning signal is sent by a second device, and the positions of the first device and the second device are different.

[0017] The processing module is used to backscatter the first positioning signal and the second positioning signal, which are used to locate the third device.

[0018] According to a seventh aspect of the present disclosure, a signal receiving apparatus is provided, comprising:

[0019] The transceiver module is used to receive a third positioning signal, which includes a signal generated by a third device through backscattering a first positioning signal and a second positioning signal. The frequency position of the first positioning signal is different from that of the second positioning signal. The first positioning signal is sent by a first device, and the second positioning signal is sent by a second device. The positions of the first device and the second device are different.

[0020] The processing module is used to obtain time information based on the third positioning signal, the time information including the reception time of any one of the third positioning signals or the time difference between the reception times of any two positioning signals included in the third positioning signal.

[0021] According to an eighth aspect of the present disclosure, a signal receiving device is provided, comprising: a transceiver module for receiving time information, the time information being acquired by a fourth device based on a received third positioning signal, the third positioning signal including a signal generated by the third device through backscattering a first positioning signal and a second positioning signal, the first positioning signal being transmitted by a first device, the second positioning signal being transmitted by a second device, the position of the first device being different from the position of the second device, and the time information including the reception time of any one of the third positioning signals or the time difference between the reception times of any two positioning signals included in the third positioning signal;

[0022] The processing module is used to locate the third device based on the time information.

[0023] According to a ninth aspect of the present disclosure, a communication device is provided, comprising: one or more processors; wherein the communication device is configured to perform the method described in any one of the first, second, third, or fourth aspects.

[0024] According to a tenth aspect of the present disclosure, a communication system is provided, comprising: a first device, a second device, a third device, a fourth device, and a fifth device, wherein the first device and the second device are configured to implement the signal transmission and signal transmission method described in the first aspect, the third device is configured to implement the signal reception method described in the second aspect, the fourth device is configured to implement the signal transmission method described in the third aspect, and the fifth device is configured to implement the signal transmission method described in the fourth aspect.

[0025] According to an eleventh aspect of the present disclosure, a storage medium is provided that stores instructions, which, when executed on a communication device, cause the communication device to perform the method as described in any one of the first, second, third, and fourth aspects. Attached Figure Description

[0026] The accompanying drawings, which are included to provide a further understanding of the embodiments of this disclosure and form part of this disclosure, illustrate exemplary embodiments of this disclosure and, together with their descriptions, serve to explain the embodiments of this disclosure and do not constitute an improper limitation of the embodiments of this disclosure. In the drawings:

[0027] Figure 1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure;

[0028] Figure 2A is an interactive schematic diagram of a signal transmission and reception method according to an embodiment of the present disclosure;

[0029] Figure 2B is a schematic diagram illustrating signal positioning according to an embodiment of the present disclosure;

[0030] Figure 3 is a flowchart illustrating a signal transmission method according to an embodiment of the present disclosure;

[0031] Figure 4 is a flowchart illustrating a signal transmission method according to an embodiment of the present disclosure;

[0032] Figure 5 is a schematic flowchart illustrating a signal receiving method according to an embodiment of the present disclosure;

[0033] Figure 6 is a schematic flowchart illustrating a signal receiving method according to an embodiment of the present disclosure;

[0034] Figure 7 is a schematic flowchart illustrating a signal receiving method according to an embodiment of the present disclosure;

[0035] Figure 8 is a schematic flowchart illustrating a signal transmission method according to an embodiment of the present disclosure;

[0036] Figure 9A is a schematic diagram of the structure of the signal transmitting device proposed in an embodiment of this disclosure;

[0037] Figure 9B is a schematic diagram of the structure of the signal receiving device proposed in an embodiment of this disclosure;

[0038] Figure 9C is a schematic diagram of the structure of the signal receiving device proposed in an embodiment of this disclosure;

[0039] Figure 9D is a schematic diagram of the structure of the signal transmitting device proposed in an embodiment of this disclosure;

[0040] Figure 10A is a schematic diagram of the structure of the communication device proposed in an embodiment of this disclosure;

[0041] Figure 10B is a schematic diagram of the chip structure proposed in an embodiment of this disclosure. Detailed Implementation

[0042] This disclosure provides a signal transmission and reception method, apparatus, and storage medium.

[0043] According to a first aspect of the present disclosure, a signal transmission method is provided, the method being performed by a first device, the method comprising:

[0044] A first positioning signal is sent, and the first positioning signal and a second positioning signal are used for backscattering by a third device to locate the third device. The second positioning signal is sent by a second device, and the position of the first device is different from the position of the second device.

[0045] In the above embodiments, the problem of how to locate the third device is solved. The first and second devices at different locations locate the third device by sending different positioning signals, ensuring that the third device can backscatter the positioning signals sent from different locations, thereby ensuring the accuracy of locating the third device.

[0046] In conjunction with some embodiments of the first aspect, in some embodiments, the third device does not perform frequency offset on the first positioning signal and the second positioning signal, and the frequency positions of the first positioning signal and the second positioning signal do not overlap; or,

[0047] The third device performs unidirectional frequency shift on the first positioning signal and the second positioning signal, and the frequency position of the first positioning signal does not overlap with the frequency position of the second positioning signal.

[0048] In the above embodiments, by specifying that the frequency position of the first positioning signal does not overlap with the frequency position of the second positioning signal, the accuracy of positioning the third device based on the first positioning signal and the second positioning signal is ensured.

[0049] In conjunction with some embodiments of the first aspect, in some embodiments, the first frequency offset value of the unidirectional frequency offset is greater than 0 or less than 0.

[0050] In conjunction with some embodiments of the first aspect, in some embodiments, the third device performs bidirectional frequency shifting on the first positioning signal and the second positioning signal, wherein the frequency position of the first positioning signal does not overlap with the frequency position of the second positioning signal, and the frequency position of the first positioning signal after bidirectional frequency shifting does not overlap with the frequency position of the second positioning signal after bidirectional frequency shifting.

[0051] In the above embodiments, by specifying that the frequency position of the first positioning signal does not overlap with the frequency position of the second positioning signal, the accuracy of positioning the third device based on the first positioning signal and the second positioning signal is ensured.

[0052] In conjunction with some embodiments of the first aspect, in some embodiments, the frequency interval between the first positioning signal and the second positioning signal is greater than or equal to the sum of half the frequency of the first positioning signal after bidirectional frequency offset, half the frequency of the second positioning signal after bidirectional frequency offset, and twice the second frequency offset value.

[0053] In conjunction with some embodiments of the first aspect, in some embodiments, the second frequency offset value is greater than 0.

[0054] In conjunction with some embodiments of the first aspect, in some embodiments, the first positioning signal and the second positioning signal are transmitted at the same time.

[0055] In the above embodiments, by specifying the transmission times of the first positioning signal and the second positioning signal, the accuracy of positioning based on the first positioning signal and the second positioning signal is ensured.

[0056] In conjunction with some embodiments of the first aspect, in some embodiments, the frequency position of the first positioning signal is the same as or different from the frequency position of the second positioning signal.

[0057] In conjunction with some embodiments of the first aspect, in some embodiments, the transmission time of the first positioning signal is different from the transmission time of the second positioning signal.

[0058] In the above embodiments, by specifying the transmission times of the first positioning signal and the second positioning signal, the accuracy of positioning based on the first positioning signal and the second positioning signal is ensured.

[0059] A second aspect of this disclosure provides a signal receiving method, the method being performed by a third device, the method comprising:

[0060] Receive a first positioning signal and a second positioning signal, wherein the first positioning signal is sent by a first device and the second positioning signal is sent by a second device, and the positions of the first device and the second device are different;

[0061] The first positioning signal and the second positioning signal are backscattered, and the first positioning signal and the second positioning signal are used to locate the third device.

[0062] In conjunction with some embodiments of the second aspect, in some embodiments, the third device does not perform frequency offset on the first positioning signal and the second positioning signal, and the frequency position of the first positioning signal does not overlap with the frequency position of the second positioning signal.

[0063] In conjunction with some embodiments of the second aspect, in some embodiments, the backscattering of the first positioning signal and the second positioning signal includes:

[0064] The first positioning signal and the second positioning signal are subjected to unidirectional frequency shift; wherein the frequency position of the first positioning signal does not overlap with the frequency position of the second positioning signal.

[0065] In conjunction with some embodiments of the second aspect, in some embodiments, the first frequency offset value of the unidirectional frequency offset is greater than 0 or less than 0.

[0066] In conjunction with some embodiments of the second aspect, in some embodiments, the backscattering of the first positioning signal and the second positioning signal includes:

[0067] The first positioning signal and the second positioning signal are subjected to bidirectional frequency shift; wherein the frequency position of the first positioning signal does not overlap with the frequency position of the second positioning signal, and the frequency position of the first positioning signal after bidirectional frequency shift does not overlap with the frequency position of the second positioning signal after bidirectional frequency shift.

[0068] In conjunction with some embodiments of the second aspect, in some embodiments, the frequency interval between the first positioning signal and the second positioning signal includes half the frequency of the first positioning signal after bidirectional frequency offset, half the frequency of the second positioning signal after bidirectional frequency offset, and the sum of twice the second frequency offset value.

[0069] In conjunction with some embodiments of the second aspect, in some embodiments, the second frequency offset value is greater than 0.

[0070] In conjunction with some embodiments of the second aspect, in some embodiments, the transmission time of the first positioning signal is the same as the transmission time of the second positioning signal.

[0071] In conjunction with some embodiments of the second aspect, in some embodiments, the frequency position of the first positioning signal is the same as or different from the frequency position of the second positioning signal.

[0072] In conjunction with some embodiments of the second aspect, in some embodiments, the transmission time of the first positioning signal is different from the transmission time of the second positioning signal.

[0073] A third aspect of this disclosure provides a signal transmission and reception method, the method being executed by a fourth device, the method comprising:

[0074] Receive a third positioning signal, the third positioning signal including a signal generated by a third device by backscattering a first positioning signal and a second positioning signal, the frequency position of the first positioning signal is different from the frequency position of the second positioning signal, the first positioning signal is sent by a first device, the second positioning signal is sent by a second device, and the position of the first device is different from the position of the second device;

[0075] Time information is obtained based on the third positioning signal, and the time information includes the reception time of any one of the third positioning signals or the time difference between the reception times of any two positioning signals included in the third positioning signal.

[0076] In conjunction with some embodiments of the third aspect, in some embodiments, the method further includes:

[0077] The time information is sent to a fifth device, which is used to locate the third device based on the time information.

[0078] A fourth aspect of this disclosure provides a signal receiving method, the method being executed by a fifth device, the method comprising:

[0079] The receiving time information is obtained by the fourth device based on the received third positioning signal. The third positioning signal includes a signal generated by the third device through backscattering of the first positioning signal and the second positioning signal. The first positioning signal is sent by the first device, and the second positioning signal is sent by the second device. The positions of the first device and the second device are different. The time information includes the receiving time of any one of the third positioning signals or the time difference between the receiving times of any two positioning signals included in the third positioning signal.

[0080] The third device is located based on the time information.

[0081] Fifthly, embodiments of this disclosure provide a signal transmitting device, which includes at least one of a transceiver module and a processing module; wherein the signal transmitting device is used to execute an optional implementation of the first aspect.

[0082] In a sixth aspect, embodiments of this disclosure provide a signal receiving device, wherein the signal transmitting device includes at least one of a transceiver module and a processing module; wherein the signal receiving device is used to execute optional implementations of the second, third, or fourth aspects.

[0083] In a seventh aspect, embodiments of this disclosure provide a communication device, including: one or more processors; wherein the communication device is configured to perform the method of any one of the first, second, third, or fourth aspects.

[0084] Eighthly, embodiments of this disclosure provide a storage medium storing first information, which, when executed on a communication device, causes the communication device to perform a method as described in any one of the first, second, third, or fourth aspects.

[0085] Ninthly, embodiments of this disclosure provide a program product that, when executed by a communication device, causes the communication device to perform the method described in any of the first, second, third, or fourth aspects.

[0086] In a tenth aspect, embodiments of this disclosure provide a computer program that, when run on a communication device, causes the communication device to perform the methods described in any of the first, second, third, or fourth aspects.

[0087] Eleventhly, embodiments of this disclosure provide a chip or chip system. The chip or chip system includes processing circuitry configured to perform the methods described in any of the first, second, third, or fourth aspects.

[0088] It is understood that the aforementioned terminals, communication devices, storage media, program products, computer programs, chips, or chip systems are all used to execute the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0089] This disclosure provides a signal transceiver method, apparatus, and storage medium. In some embodiments, the terms "signal transceiver method" can be used interchangeably with "signal transmission and reception method," "signal communication method," and "signal processing method," and the terms "signal transceiver apparatus" can be used interchangeably with "signal transmission and reception apparatus," "signal communication apparatus," and "signal processing apparatus," and the terms "information processing system" and "communication system" can be used interchangeably.

[0090] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0091] In each of the disclosed embodiments, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of the embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0092] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0093] In this embodiment of the disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular expression or a plural expression.

[0094] In the embodiments disclosed herein, "multiple" refers to two or more.

[0095] In some embodiments, the terms “at least one of”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0096] In some embodiments, the notation "at least one of A and B", "A and / or B", "A in one case, B in another", "in response to one case A, in response to another case B", etc., may include the following technical solutions depending on the situation: in some embodiments, A (execute A regardless of B); in some embodiments, B (execute B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed). The same applies when there are more branches such as A, B, C, etc.

[0097] In some embodiments, the notation "A or B" may include the following technical solutions, depending on the situation: in some embodiments, A (execution of A regardless of B); in some embodiments, B (execution of B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The same applies when there are more branches such as A, B, C, etc.

[0098] The prefixes "first," "second," etc., used in the embodiments of this disclosure are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, quantity, or content of the descriptive objects. The description of the descriptive objects is found in the claims or the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, if the descriptive object is a "field," the ordinal numbers preceding "field" in "first field" and "second field" do not restrict the position or order of the "fields." "First" and "second" do not restrict whether the "fields" they modify are in the same message, nor do they restrict the order of "first field" and "second field." Similarly, if the descriptive object is a "level," the ordinal numbers preceding "level" in "first level" and "second level" do not restrict the priority between "levels." Furthermore, the number of descriptive objects is not limited by ordinal numbers and can be one or more. For example, in "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the object being described is "device", then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. Similarly, if the object being described is "information", then "first information" and "second information" can be the same information or different information, and their content can be the same or different.

[0099] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0100] In some embodiments, terms such as "time / frequency" and "time-frequency domain" refer to the time domain and / or frequency domain.

[0101] In some embodiments, the terms “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “if…”, “if…”, etc., can be used interchangeably.

[0102] In some embodiments, the terms “greater than,” “greater than or equal to,” “not less than,” “more than,” “more than or equal to,” “not less than,” “higher than,” “higher than or equal to,” “not lower than,” and “above” can be used interchangeably, as can the terms “less than,” “less than or equal to,” “not greater than,” “less than,” “less than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” and “below”.

[0103] In some embodiments, the apparatus and device may be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they may also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "body", etc.

[0104] In some embodiments, "network" can be interpreted as devices included in the network, such as access network devices, core network devices, etc.

[0105] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)," "base station (BS)," "radio base station," or "fixed station." In some embodiments, it may also be understood as "node," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "antenna panel," "antenna array," "cell," "macro cell," "small cell," "femto cell," "pico cell," "sector," "cell group," "serving cell," "carrier," "component carrier," or "bandwidth part (BWP)."

[0106] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (terminal)," "user terminal," "mobile station (MS)," "mobile terminal (MT)," "subscriber station," "mobile unit," "subscriber unit," "wireless unit," "remote unit," "mobile device," "wireless device," "wireless communication device," "remote device," "mobile subscriber station," "access terminal," "mobile terminal," "wireless terminal," "remote terminal," "handset," "user agent," "mobile client," "client," etc.

[0107] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0108] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0109] Furthermore, each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0110] Figure 1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure. As shown in Figure 1, the method provided in this embodiment can be applied to a communication system 100, which may include a first device 101, a second device 102, a third device 103, a fourth device 104, and a fifth device 105. It should be noted that the communication system 100 may also include other devices, and this disclosure does not limit the devices included in the communication system 100.

[0111] In some embodiments, the third device 103 includes, for example, at least one of the following: Internet of Things (IoT) devices, mobile phones, wearable devices, terminals, automobiles with communication capabilities, smart cars, tablets, computers with wireless transceiver capabilities, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, wireless terminal devices in industrial control, wireless terminal devices in self-driving, wireless terminal devices in remote medical surgery, wireless terminal devices in smart grids, wireless terminal devices in transportation safety, wireless terminal devices in smart cities, and wireless terminal devices in smart homes, but is not limited thereto.

[0112] Optionally, the third device 103 is an Internet of Things (IoT) device. For example, the IoT device is an Ambient-IoT (Ambient Internet of Things) device. Compared with NB-IoT (Narrow Band Internet of Things) terminals, Ambient-IoT devices have lower complexity and cost, and lower maintenance costs. The main feature is that they do not have batteries and are powered by electromagnetic signals they receive, or they have batteries with a small amount of energy storage, but these batteries do not require manual charging and can obtain energy from external sources, such as electromagnetic waves, heat, kinetic energy, etc.

[0113] In some embodiments, different Ambient IoT device types and their operating methods differ, as do their power acquisition and storage capabilities. Currently, the device types for Ambient IoT devices are categorized as follows:

[0114] Optionally, device A cannot perform independent signal generation / amplification; for example, it uses a backscattering operation mode.

[0115] Optionally, device B has energy storage capabilities but cannot generate signals independently; for example, it uses a backscattering operation. The stored energy can be used to amplify the reflected signal.

[0116] Optionally, device C has energy storage capabilities and can generate signals independently, such as having an RF (Radio Frequency) module that actively transmits signals.

[0117] In some embodiments, Ambient IoT devices use backscatter communication. Optionally, backscatter communication utilizes the principle of backscattering radio frequency signals to design extremely low-power modulation and transmission techniques. In backscatter communication, the radio frequency signal is received by the device, and the device's internal circuitry modulates the information to be transmitted onto the incident electromagnetic wave using methods such as load impedance modulation. The modulated electromagnetic wave carrying the information is then transmitted. Various modulation methods can be used, including ASK (Amplitude Shift Keying), FSK (Frequency Shift Keying), PSK (Phase Shift Keying), and so on.

[0118] Optionally, for devices using backscattering, the general workflow is as follows: the network sends a downlink command to the device; upon receiving the downlink command, the device sends a corresponding response to the network or performs a corresponding operation. However, while transmitting data, the device requires a CW node to provide electromagnetic waves for reflection.

[0119] In some embodiments, for devices using backscattering, a continuous wave (CW) energy source (CW node) is required to provide electromagnetic waves for reflection while the device is transmitting data. The CW is typically of constant amplitude. The CW node can be a standalone node or a base station / intermediate node (e.g., UE) communicating with the device.

[0120] For devices using backscattering, the general workflow is as follows: the network sends downlink commands to the device; upon receiving the downlink commands, the device sends a corresponding response to the network or performs a corresponding operation. However, while transmitting data, the device requires a CW node to provide electromagnetic waves for reflection.

[0121] In some embodiments of this disclosure, the first device 101 or the second device 102 is used to transmit downlink signals. Optionally, the first device 101 is a DSN (Downlink Signal Node). Optionally, the first device 102 is a node or device that connects a terminal to a wireless network. In some embodiments of this disclosure, the first device 101 is used to transmit CW, that is, electromagnetic waves as described in the above embodiments. Optionally, the first device 101 is a CWN (Continuous Wave Node). The first device 101 may include, but is not limited to, at least one of the following in a 5G communication system: an evolved Node B (eNB), a next-generation eNB (ng-eNB), a next-generation Node B (gNB), a node B (NB), a home node B (HNB), a home evolved node B (HeNB), a radio backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open RAN, a cloud RAN, a base station in other communication systems, and an access node in a Wi-Fi system.

[0122] In some embodiments, the fourth device 104 in this disclosure is used to receive signals sent by the first device 101 in order to obtain the time of receiving the signals sent by the first device 101. Optionally, the fourth device 104 is an UR (Uplink receiver). Optionally, the fourth device 104 is a node or device that connects the terminal to the wireless network. The fourth device 104 may include at least one of the following in a 5G communication system: evolved Node B (eNB), next-generation eNB (ng-eNB), next-generation Node B (gNB), node B (NB), home node B (HNB), home evolved node B (HeNB), wireless backhaul device, radio network controller (RNC), base station controller (BSC), base transceiver station (BTS), base band unit (BBU), mobile switching center, base station in a 6G communication system, open RAN, cloud RAN, base station in other communication systems, and access node in a Wi-Fi system, but is not limited thereto.

[0123] In some embodiments, the fifth device 105 is used to locate the third device 103.

[0124] In some embodiments, this disclosure also includes a sixth device 106 for providing power to the first device 101 so that the first device 101 can use the power provided by the sixth device 106 to send, receive or process data.

[0125] It should be noted that the first device 101, the second device 102, the fourth device 104 and the sixth device 106 in this embodiment may belong to the same device or to different devices, and this embodiment does not limit this.

[0126] In some embodiments, the fourth device 105 in this disclosure is used to locate the terminal 101. In this disclosure, the fourth device 105 is a core network device. In some embodiments, the core network device may be a single device, including one or more network elements, or it may be multiple devices or a group of devices, each including all or part of the aforementioned one or more network elements. Network elements may be virtual or physical. The core network includes, for example, at least one of the Evolved Packet Core (EPC), 5G Core Network (5GCN), and Next Generation Core (NGC).

[0127] Referring to Figure 1, the communication system in this embodiment includes four links. Link 1 is the link for data transmission between the first device 101 or the second device 102 and the third device 103. Link 2 is the link for data transmission between the fourth device 104 and the third device 103. Link 3 is the link for data transmission between the first device 101 or the second device 102 and the third device 103. Link 4 is the link for providing power to the third device 103.

[0128] In some embodiments, the technical solutions of this disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within access network devices involved in the embodiments of this disclosure can be transformed into internal interfaces of Open RAN. The processes and information interactions between these internal interfaces can be implemented by software or programs.

[0129] In some embodiments, the access network device may be composed of a central unit (CU) and a distributed unit (DU). The CU may also be called a control unit. The CU-DU structure can separate the protocol layer of the access network device. Some of the protocol layer functions are centrally controlled by the CU, while the remaining part or all of the protocol layer functions are distributed in the DU and centrally controlled by the CU. However, this is not the only possibility.

[0130] It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions proposed in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions proposed in this disclosure are also applicable to similar technical problems.

[0131] The following embodiments of this disclosure can be applied to the communication system 100 shown in FIG1, or to some of the main bodies, but are not limited thereto. The main bodies shown in FIG1 are illustrative. The communication system may include all or some of the main bodies in FIG1, or may include other main bodies outside of FIG1. ​​The number and form of each main body are arbitrary. Each main body may be physical or virtual. The connection relationship between the main bodies is illustrative. The main bodies may not be connected or may be connected. The connection can be in any way, it can be a direct connection or an indirect connection, it can be a wired connection or a wireless connection.

[0132] The embodiments disclosed herein can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), and IEEE 802.20, Ultra-Wideband (UWB), Bluetooth (a registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X) systems, systems utilizing other signal processing methods, and next-generation systems built upon them. Furthermore, multiple systems can be combined (e.g., a combination of LTE or LTE-A with 5G).

[0133] Figure 2A is an interactive schematic diagram of a signal transmission and reception method according to an embodiment of the present disclosure. As shown in Figure 2A, the embodiments of the present disclosure relate to a signal transmission and reception method, which includes:

[0134] Step S2101: The first device sends a first positioning signal.

[0135] In some embodiments, the third device receives the first positioning signal.

[0136] In some embodiments, the first positioning signal is used by the third device to backscatter and locate the third device. That is, the third device can backscatter the first positioning signal, and the backscattered signal can be used to locate the third device.

[0137] In some embodiments, the first positioning signal includes a positioning sequence.

[0138] In step S2102, the second device sends a second positioning signal.

[0139] In some embodiments, the third device receives the second positioning signal.

[0140] In some embodiments, the second positioning signal is used by the third device to backscatter and locate the third device. That is, the third device can backscatter the second positioning signal, and the backscattered signal can be used to locate the third device.

[0141] It should be noted that the first device and the second device in this embodiment have the same function, and the distinction between the first device and the second device is merely that of the devices themselves.

[0142] In some embodiments, other devices may also be used to send positioning signals. This disclosure only uses the first device and the second device as examples for illustration.

[0143] In some embodiments, the position of the first device is different from the position of the second device. In this disclosure embodiment, the distance between the first device and the third device, and the distance between the second device and the third device, are different, thus allowing the third device to be located at different distances.

[0144] In some embodiments, the third device does not perform frequency offset on the first and second positioning signals, and the frequency positions of the first and second positioning signals do not overlap. In this embodiment, by ensuring that the frequency positions of the first and second positioning signals do not overlap, the third device can identify positioning signals sent by different devices, thereby enabling backscattering of the positioning signals and ensuring the accuracy of the backscattering.

[0145] In some embodiments, the third device performs unidirectional frequency offset on the first positioning signal and the second positioning signal, wherein the frequency positions of the first positioning signal and the second positioning signal do not overlap. In some embodiments, unidirectional frequency offset refers to the positioning signal being offset in one direction. Optionally, the first frequency offset value of the unidirectional frequency offset is greater than 0 or less than 0. For example, if the frequency range of the positioning signal is [f L ,fH During backscattering, the device performs unidirectional frequency shifting, meaning the backscattered signal is shifted to [f]. L +f delta ,f H +f delta ], where f delta Greater than 0 or less than 0.

[0146] In some embodiments, the third device performs bidirectional frequency offset on the first positioning signal and the second positioning signal, wherein the frequency positions of the first positioning signal and the second positioning signal do not overlap, and the frequency positions of the first positioning signal after bidirectional frequency offset do not overlap. In some embodiments, bidirectional frequency offset refers to the positioning signal being offset in two directions. Optionally, the frequency interval between the first positioning signal and the second positioning signal is greater than or equal to the sum of half the frequency of the first positioning signal after bidirectional frequency offset, half the frequency of the second positioning signal after bidirectional frequency offset, and twice the second frequency offset value. Optionally, the second frequency offset value is greater than 0. For example, if the frequency range of the positioning signal is [f L ,f H During backscattering, the device performs bidirectional frequency shifting, meaning the backscattered signal is shifted to [f]. L +f delta ,f H +f delta ] and [f L -f delta ,f H -f delta ], f delta A value greater than 0 means that it can shift to both higher and lower frequencies simultaneously.

[0147] In some embodiments, the first positioning signal and the second positioning signal are transmitted at the same time. Optionally, the third device does not perform frequency offset on the first positioning signal and the second positioning signal, the frequency positions of the first positioning signal and the second positioning signal do not overlap, and the first positioning signal and the second positioning signal are transmitted at the same time. Alternatively, the third device performs unidirectional frequency offset on the first positioning signal and the second positioning signal, the frequency positions of the first positioning signal and the second positioning signal do not overlap, and the first positioning signal and the second positioning signal are transmitted at the same time. Alternatively, the third device performs bidirectional frequency offset on the first positioning signal and the second positioning signal, the frequency positions of the first positioning signal and the second positioning signal do not overlap, and the frequency positions of the first positioning signal after bidirectional frequency offset do not overlap, and the first positioning signal and the second positioning signal are transmitted at the same time.

[0148] It should be noted that the frequency position of the first positioning signal may be the same as or different from that of the second positioning signal. Optionally, the transmission time of the first positioning signal may be different from that of the second positioning signal. For example, the frequency position of the first positioning signal may be the same as that of the second positioning signal, but the transmission time of the first positioning signal may be different from that of the second positioning signal. Or, for another example, the frequency position of the first positioning signal may be different from that of the second positioning signal, and the transmission time of the first positioning signal may be different from that of the second positioning signal.

[0149] In some embodiments, the first positioning signal corresponds to first time information, which indicates the transmission time of the first positioning signal. In some embodiments, the second positioning signal corresponds to second time information, which indicates the transmission time of the second positioning signal.

[0150] In some embodiments, the time required for the first device to send the first positioning signal or the second device to send the second positioning signal is short. Therefore, the start time of the time domain location where the first or second positioning signal is located can be determined as the transmission time of the positioning signal. For example, if the time domain location of the first positioning signal is slot1, then the transmission time of the first positioning signal is the start time of slot1.

[0151] It should be noted that if the first and second positioning signals are transmitted at different times, the third device may experience inconsistent wake-up delays when performing two backscattering operations on the first and second positioning signals, leading to positioning errors. If the difference in wake-up delay between the third device is small, the error can be ignored.

[0152] In step S2103, the third device receives the first positioning signal and the second positioning signal.

[0153] In step S2104, the third device backscatters the first positioning signal and the second positioning signal.

[0154] In this embodiment of the disclosure, after the third device receives the first positioning signal and the second positioning signal, it can backscatter the first positioning signal and the second positioning signal.

[0155] In some embodiments, the third device may perform modulated backscattering on the first positioning signal and the second positioning signal. Optionally, modulated backscattering refers to the third device adding some information to the signal that needs to be backscattered. For example, temperature information, humidity information, altitude information, etc., detected by the third device may be modulated into the signal that needs to be backscattered.

[0156] In some embodiments, the third device may perform unmodulated backscattering of the first positioning signal and the second positioning signal.

[0157] Step S2105: The fourth device receives the third positioning signal.

[0158] In some embodiments, the third positioning signal includes a signal generated by the third device backscattering the first positioning signal and the second positioning signal. Optionally, the third positioning signal includes at least one of the backscattered signal of the first positioning signal or the backscattered signal of the second positioning signal.

[0159] Step S2106: The fourth device acquires time information based on the third positioning signal.

[0160] In this embodiment of the disclosure, the fourth device receives the third positioning signal and can obtain the time information of each positioning signal included in the third positioning signal.

[0161] In some embodiments, the time information includes the reception time of any one of the third positioning signals or the time difference between the reception times of any two positioning signals included in the third positioning signal.

[0162] In step S2107, the fourth device sends time information to the fifth device.

[0163] In some embodiments, the fifth device is used to locate the third device based on time information.

[0164] Step S2108: The fifth device receives time information.

[0165] Step S2109: The fifth device locates the third device based on time information.

[0166] In some embodiments, referring to Figure 2B, the first and second devices are CWN / DSNs, the third device is a device, the fourth device is a UR, and the fifth device is a processing device, as illustrated in the following example. If multiple CWN / DSNs transmit positioning signals simultaneously, the time at which the UR receives the different CWN / DSNs may be the same or different. The UR can distinguish the signals of each CWN / DSN in the frequency domain. Based on the time difference between the positioning signals received by the UR from different CWNs, the distance difference between the device and any two CWNs is determined, thereby determining the location of the device. This topology includes two links: a link between the CWN / DSN and the device, and a link between the device and the UR. Different CWN / DSNs and devices may be the same or different, and there may be a time difference (equal to 0 or not equal to 0) between the backscattered positioning signals received by the UR from different CWN / DSNs. Let T be the difference between the time when the UR receives the backscattered positioning signal of CWN1 / DSN1 and the time when CWN2 / DSN2 receives the backscattered positioning signal. diff12 The time difference between when UR receives the backscattered positioning signal from CWN2 / DSN2 and when CWN3 / DSN3 receives the backscattered positioning signal is T. diff23 The time difference between when UR receives the backscattered positioning signal from CWN1 / DSN1 and when CWN3 / DSN3 receives the backscattered positioning signal is T. diff13 The difference between the distance from the device to CWN1 / DSN1 and the distance from the device to CWN2 / DSN2 is c*T. diff12 The difference between the distance from device to CWN2 / DSN2 and the distance from device to CWN3 / DSN3 is c*T. diff23 The difference between the distance from device to CWN1 / DSN1 and the distance from device to CWN3 / DSN3 is c*T. diff13 Where c is the speed of light. That is, with CWN1 / DSN1 and CWN2 / DSN2 as foci, the difference between the distance from the device to CWN1 / DSN1 and the distance to CWN2 / DSN2 is c*T. diff12 On a single curve (or a single surface if vertical positioning is considered), the device also has foci CWN2 / DSN2 and CWN3 / DSN3, with the difference between the distance to CWN2 / DSN2 and the distance to CWN3 / DSN3 being c*T. diff23 On a single curve (or a single surface if vertical positioning is considered), the device also has foci CWN1 / DSN1 and CWN3 / DSN3, with the difference between the distance to CWN1 / DSN1 and the distance to CWN3 / DSN3 being c*T.diff13 The device's location can be determined by the nodes of at least two of the aforementioned single curves; similarly, the device's location can be determined by the intersection points of at least three of the aforementioned single surfaces.

[0167] If multiple CWNs / DSNs transmit positioning signals at different times—for example, CWN1 transmits its positioning signal first, followed by CWN2, and then CWN3—the UR can measure the propagation delay of the positioning signal transmitted by each CWN. This delay is the time between the moment the CWN transmits its positioning signal and the moment the UR receives the backscattered positioning signal from the device. Then, based on the propagation delay of each CWN, the aforementioned T is calculated. diff12 T diff13 and T diff23 And based on this, the device is located.

[0168] The signal processing method disclosed in this embodiment may include at least one of steps S2101 to S2109. For example, step S2101 may be implemented as an independent embodiment, step S2102 may be implemented as an independent embodiment, step S2103 may be implemented as an independent embodiment, step S2104 may be implemented as an independent embodiment, step S2105 may be implemented as an independent embodiment, step S2106 may be implemented as an independent embodiment, step S2107 may be implemented as an independent embodiment, step S2108 may be implemented as an independent embodiment, step S2109 may be implemented as an independent embodiment, and at least one of steps S2101 to S2109 may be implemented as an independent embodiment, but is not limited thereto.

[0169] In some embodiments, the execution order of steps S2101-S2109 is not limited, and the execution order can be adjusted to form new embodiments.

[0170] In some embodiments, at least one of steps S2101-S2109 is optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0171] In some embodiments, other alternative implementations may be described before or after the specification corresponding to FIG2A.

[0172] In some embodiments, the names of information, etc., are not limited to the names described in the embodiments. Terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0173] In some embodiments, the terms "uplink", "uplink", and "physical uplink" can be used interchangeably, as can the terms "downlink", "downlink", and "physical downlink", as well as the terms "sidelink", "sidelink", "sidelink communication", "sidelink communication", "direct connection", "direct link", "direct communication", and "direct link communication".

[0174] In some embodiments, “get,” “obtain,” “receive,” “transmit,” “bidirectional transmission,” and “send and / or receive” can be used interchangeably and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining through self-processing, or autonomous implementation, among other meanings.

[0175] In some embodiments, terms such as “send,” “transmit,” “report,” “distribute,” “transfer,” “bidirectional transmission,” “send and / or receive” can be used interchangeably.

[0176] In some embodiments, terms such as “moment,” “point in time,” “time,” and “time location” can be used interchangeably, as can terms such as “duration,” “segment,” “time window,” “window,” and “time.”

[0177] In some embodiments, terms such as "certain," "preset," "default," "set," "indicated," "a certain," "any," and "first" can be used interchangeably. "Certain A," "preset A," "default A," "set A," "indicated A," "a certain A," "any A," and "first A" can be interpreted as A pre-defined in a protocol or the like, or as A obtained through setting, configuration, or instruction, or as specific A, a certain A, any A, or first A, but are not limited thereto.

[0178] Figure 3 is a schematic flowchart illustrating a signal transmission method according to an embodiment of the present disclosure, applied to a first device. As shown in Figure 3, this embodiment of the present disclosure relates to a signal transmission method, which includes:

[0179] Step S3101: The first device sends a first positioning signal.

[0180] The optional implementation of step S3101 can be found in the optional implementation of step S2101 in Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0181] Figure 4 is a schematic flowchart illustrating a signal transmission method according to an embodiment of the present disclosure, applied to a second device. As shown in Figure 4, this embodiment of the present disclosure relates to a signal transmission method, which includes:

[0182] Step S4101: The second device sends a second positioning signal.

[0183] The optional implementation of step S4101 can be found in step S2102 of Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0184] Figure 5 is a schematic flowchart illustrating a signal receiving method according to an embodiment of the present disclosure, applied to a third device. As shown in Figure 5, the present disclosure relates to a signal receiving method, which includes:

[0185] In step S5101, the third device receives the first positioning signal and the second positioning signal.

[0186] The optional implementation of step S5101 can be found in step S2103 of Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0187] In step S5102, the third device backscatters the first positioning signal and the second positioning signal.

[0188] The optional implementation of step S5102 can be found in step S2104 of Figure 2A and other related parts in the embodiment involved in Figure 2A, which will not be repeated here.

[0189] The signal transmission method disclosed herein may include at least one of steps S5101 to S5102. For example, step S5101 may be implemented as a separate embodiment, and step S5102 may be implemented as a separate embodiment, but is not limited thereto.

[0190] Figure 6 is a schematic flowchart illustrating a signal receiving method according to an embodiment of the present disclosure, applied to a fourth device. As shown in Figure 6, this embodiment of the present disclosure relates to a signal receiving method, which includes:

[0191] Step S6101: The fourth device receives the third positioning signal.

[0192] The optional implementation of step S6101 can be found in step S2105 of Figure 2A and other related parts in the embodiment involved in Figure 2A, which will not be repeated here.

[0193] In step S6102, the fourth device acquires time information based on the third positioning signal.

[0194] The optional implementation of step S6102 can be found in step S2106 of Figure 2A and other related parts in the embodiment involved in Figure 2A, which will not be repeated here.

[0195] In step S6103, the fourth device sends time information to the fifth device.

[0196] The optional implementation of step S6103 can be found in step S2107 of Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0197] The signal transmission method disclosed in this embodiment may include at least one of steps S6101 to S6103. For example, step S6101 may be implemented as an independent embodiment, step S6102 may be implemented as an independent embodiment, and step S6103 may be implemented as an independent embodiment, but is not limited thereto.

[0198] Figure 7 is a schematic flowchart illustrating a signal receiving method according to an embodiment of the present disclosure, applied to a fifth device. As shown in Figure 7, this embodiment of the present disclosure relates to a signal receiving method, which includes:

[0199] Step S7101: The fifth device receives time information.

[0200] The optional implementation of step S7101 can be found in step S2108 of Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0201] In step S7102, the fifth device locates the third device based on time information.

[0202] The optional implementation of step S7102 can be found in step S2109 of Figure 2A and other related parts in the embodiment involved in Figure 2A, which will not be repeated here.

[0203] Figure 8 is a flowchart illustrating a signal transmission method according to an embodiment of the present disclosure. As shown in Figure 8, the present disclosure relates to a signal transmission and reception method, which includes:

[0204] In step S8101, CWN / DSNs in different geographical locations send positioning signals at different frequency locations.

[0205] In some embodiments, a) the frequency and location of each CWN / DSN transmitting location signals are pre-configured by the network or determined in advance during network deployment.

[0206] b) If the device does not perform frequency shifting during backscattering, then it is sufficient that the positioning signals transmitted by each CWN / DSN do not overlap in the frequency domain.

[0207] c) If the device performs frequency shifting during backscattering, the cases of single-sideband (SSB) and double-sideband (SB) shifts need to be considered separately. Single-sideband shift refers to a unidirectional frequency shift during backscattering if the CW frequency range is [fL, fH]. The backscattered signal is shifted to [fL + fdelta, fH + fdelta], where fdelta can be greater than or less than 0 (either is acceptable), meaning it can shift to a higher or lower frequency. Double-sideband shift refers to a bidirectional frequency shift during backscattering if the CW frequency range is [fL, fH]. The backscattered signal is shifted to both [fL + fdelta, fH + fdelta] and [fL - fdelta, fH - fdelta], where fdelta is greater than 0, meaning it can shift to both higher and lower frequencies simultaneously. In the case of single-sideband shift, since the frequency shift is the same for signals from each CWN / DSN, it is only necessary for the positioning signals sent by each CWN / DSN to not overlap in the frequency domain. In the case of double-sideband offset, to ensure that the UR can distinguish the backscattered signals from different CWNs / DSNs, the double-sidebands of each CWN / DSN after offset must not overlap. One possible non-overlap condition is shown in the figure below: the frequency domain interval between the positioning signals transmitted by any two CWNs / DSNs is ≥ B. i / 2+B j / 2+2*f delta Where Bi is the bandwidth of the CW transmitted by CWNi after backscattering.

[0208] In some embodiments, 2. Each CWN / DSN needs to transmit positioning signals simultaneously. This allows the UR to directly measure the time difference between receiving positioning signals from different CWN / DSNs. Simultaneous transmission of positioning signals by each CWN / DSN has another advantage: it ensures that the signals transmitted by each CWN / DSN undergo the same processing delay on the device before backscattering. If the CWN / DSNs transmit positioning signals at different times, the CWN / DSNs can also indicate the transmission time in their positioning signals. Thus, when the UR receives the positioning signals reflected from the device, it can calculate the difference in transmission delay between the positioning signals transmitted by different CWN / DSNs after reflection by the device, using the transmission time indicated in the positioning signals and the measured time of receiving the positioning signals from different CWN / DSNs. However, if the positioning signals sent by each CWN / DSN are transmitted at different times—for example, after the positioning signal from CWN1 / DSN1 arrives at the device and is backscattered, the device then receives the positioning signals from CWN2 / DSN2, performs backscattering, and then receives the positioning signals from CWN3 / DSN3 and performs backscattering—it is necessary to ensure that the processing latency of the device is the same in different backscattering operations. If the device's hardware and software capabilities cannot guarantee that the processing latency is the same in different backscattering operations, then the method of sending positioning signals from each CWN / DSN at different times cannot guarantee positioning accuracy.

[0209] Step S8102, UR measures the time when the positioning signal of each CWN / DSN backscattered is received or the difference between any two times.

[0210] In step S8103, the UR reports the receiving time or the difference between the receiving times to the network processing node.

[0211] Optionally, after receiving the reception time or reception time difference reported by the UR, the network processing node can locate the device based on the above positioning principle.

[0212] In the embodiments disclosed herein, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations in other embodiments.

[0213] This disclosure also provides an apparatus for implementing any of the above methods. For example, an apparatus is provided that includes units or modules for implementing the steps performed by the terminal in any of the above methods. Alternatively, another apparatus is provided that includes units or modules for implementing the steps performed by a network device (e.g., an access network device, a core network functional node, a core network device, etc.) in any of the above methods.

[0214] It should be understood that the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device. The processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC). The functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.

[0215] In this embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute capabilities, such as a Central Processing Unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented using an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and configuring the hardware circuit can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. Furthermore, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a Neural Network Processing Unit (NPU), a Tensor Processing Unit (TPU), or a Deep Learning Processing Unit (DPU).

[0216] Figure 9A is a schematic diagram of the structure of the signal transmitting device proposed in an embodiment of this disclosure. As shown in Figure 9A, the signal transmitting device 9100 may include at least one of a transceiver module 9101, a processing module 9102, etc. In some embodiments, the transceiver module 9101 is used to transmit a first positioning signal, the first positioning signal and a second positioning signal are used for backscattering by a third device to locate the third device, the second positioning signal is transmitted by a second device, and the position of the first device is different from the position of the second device. Optionally, the transceiver module 9101 is used to perform at least one of the communication steps such as sending and / or receiving performed by the terminal in any of the above methods (e.g., step S2101, but not limited thereto), which will not be described in detail here. Optionally, the processing module is used to perform at least one of the other steps performed by the terminal in any of the above methods, which will not be described in detail here.

[0217] Optionally, the processing module 9102 is used to perform at least one of the communication steps, such as the processing performed by the terminal in any of the above methods, which will not be described in detail here.

[0218] Figure 9B is a schematic diagram of the structure of the signal receiving device proposed in an embodiment of this disclosure. As shown in Figure 9B, the signal receiving device 9200 may include at least one of a transceiver module 9201 and a processing module 9202. In some embodiments, the transceiver module 9201 is used to receive a first positioning signal and a second positioning signal, wherein the first positioning signal is sent by a first device and the second positioning signal is sent by a second device, and the positions of the first device and the second device are different; the processing module 9102 is used to backscatter the first positioning signal and the second positioning signal, and the first positioning signal and the second positioning signal are used to locate the third device. Optionally, the transceiver module 9201 is used to perform at least one of the communication steps such as sending and / or receiving performed by the communication device in any of the above methods, which will not be described in detail here. Optionally, the processing module is used to perform at least one of the other steps performed by the communication device in any of the above methods, which will not be described in detail here.

[0219] Optionally, the processing module 9202 is used to perform at least one of the communication steps, such as the processing performed by the communication device in any of the above methods, which will not be described in detail here.

[0220] Figure 9C is a schematic diagram of the structure of the signal receiving device proposed in an embodiment of this disclosure. As shown in Figure 9C, the signal receiving device 9300 may include at least one of a transceiver module 9301 and a processing module 9302. In some embodiments, the transceiver module 9301 is used to receive a third positioning signal, the third positioning signal including a signal generated by a third device backscattering a first positioning signal and a second positioning signal, wherein the frequency position of the first positioning signal is different from the frequency position of the second positioning signal, the first positioning signal is sent by a first device, the second positioning signal is sent by a second device, and the position of the first device is different from the position of the second device; the processing module 9302 is used to obtain time information based on the third positioning signal, the time information including the reception time of any one of the third positioning signals or the time difference between the reception times of any two positioning signals included in the third positioning signal. Optionally, the transceiver module 9301 is used to perform at least one of the communication steps such as sending and / or receiving performed by the communication device in any of the above methods, which will not be described in detail here. Optionally, the processing module is used to perform at least one of the other steps performed by the communication device in any of the above methods, which will not be described in detail here.

[0221] Optionally, the processing module 9302 is used to perform at least one of the communication steps, such as the processing performed by the communication device in any of the above methods, which will not be described in detail here.

[0222] Figure 9D is a schematic diagram of the structure of the signal receiving device proposed in an embodiment of this disclosure. As shown in Figure 9D, the signal receiving device 9400 may include at least one of a transceiver module 9401 and a processing module 9402. In some embodiments, the transceiver module 9401 is used to receive time information, which is obtained by a fourth device based on a received third positioning signal. The third positioning signal includes a signal generated by the third device through backscattering of a first positioning signal and a second positioning signal. The first positioning signal is sent by a first device, and the second positioning signal is sent by a second device. The positions of the first device and the second device are different. The time information includes the reception time of any one of the third positioning signals or the time difference between the reception times of any two positioning signals included in the third positioning signal. The processing module 9402 is used to locate the third device based on the time information. Optionally, the transceiver module 9401 is used to perform at least one of the communication steps such as sending and / or receiving performed by the communication device in any of the above methods, which will not be described in detail here. Optionally, the processing module is used to perform at least one of the other steps performed by the communication device in any of the above methods, which will not be described in detail here.

[0223] Optionally, the processing module 9402 is used to perform at least one of the communication steps, such as the processing performed by the communication device in any of the above methods, which will not be described in detail here.

[0224] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, which may be separate or integrated. Optionally, the transceiver module may be interchangeable with a transceiver.

[0225] In some embodiments, the processing module may be a single module or may include multiple sub-modules. Optionally, the multiple sub-modules may each perform all or part of the steps required by the processing module. Optionally, the processing module may be interchangeable with a processor.

[0226] Figure 10A is a schematic diagram of the structure of the communication device 10100 proposed in an embodiment of this disclosure. The communication device 10100 can be a network device (e.g., access network device, core network device, etc.), a terminal, a first device, a second device, a third device, or a fourth device. It can also be a chip, chip system, or processor that supports the network device in implementing any of the above methods, or a chip, chip system, or processor that supports the terminal in implementing any of the above methods. The communication device 10100 can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0227] As shown in Figure 10A, the communication device 10100 includes one or more processors 10101. The processor 10101 can be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control signal processing devices (such as base stations, baseband chips, terminals, terminal chips, DUs or CUs, etc.), execute programs, and process program data. The communication device 10100 is used to execute any of the above methods.

[0228] In some embodiments, the communication device 10100 further includes one or more memories 10102 for storing instructions. Optionally, all or part of the memories 10102 may also be located outside the communication device 10100.

[0229] In some embodiments, the communication device 10100 further includes one or more transceivers 10103. When the communication device 10100 includes one or more transceivers 10103, the transceivers 10103 perform at least one of the communication steps such as sending and / or receiving in the above method (e.g., steps S2101, S2102, S2103, and S2104, but not limited thereto).

[0230] In some embodiments, a transceiver may include a receiver and / or a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, etc., may be used interchangeably; the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc., may be used interchangeably; and the terms receiver, receiving unit, receiver, receiving circuit, etc., may be used interchangeably.

[0231] In some embodiments, the communication device 10100 may include one or more interface circuits 10104. Optionally, the interface circuit 10104 is connected to the memory 10102, and the interface circuit 10104 can be used to receive signals from the memory 10102 or other devices, and can be used to send signals to the memory 10102 or other devices. For example, the interface circuit 10104 can read instructions stored in the memory 10102 and send the instructions to the processor 10101.

[0232] The communication device 10100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 10100 described in this disclosure is not limited thereto, and the structure of the communication device 10100 may not be limited by FIG10A. The communication device may be a standalone device or may be part of a larger device. For example, the communication device may be: (1) a standalone integrated circuit IC, or chip, or chip system or subsystem; (2) a collection of one or more ICs, optionally, the IC collection may also include storage components for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal, smart terminal, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (6) others, etc.

[0233] Figure 10B is a schematic diagram of the structure of chip 10200 according to an embodiment of this disclosure. For cases where the communication device 10100 can be a chip or a chip system, please refer to the schematic diagram of chip 10200 shown in Figure 10B, but it is not limited thereto.

[0234] Chip 10200 includes one or more processors 10201, which are used to perform any of the above methods.

[0235] In some embodiments, chip 10200 further includes one or more interface circuits 10202. Optionally, interface circuit 10202 is connected to memory 10203, and interface circuit 10202 can be used to receive signals from memory 10203 or other devices, and interface circuit 10202 can be used to send signals to memory 10203 or other devices. For example, interface circuit 10202 can read instructions stored in memory 10203 and send the instructions to processor 10201.

[0236] In some embodiments, the interface circuit 10202 performs at least one of the communication steps such as sending and / or receiving in the above method, and the processor 10201 performs at least one of the other steps.

[0237] In some embodiments, the terms interface circuit, interface, transceiver pin, transceiver, etc., can be used interchangeably.

[0238] In some embodiments, chip 10200 further includes one or more memories 10203 for storing instructions. Optionally, all or part of the memories 10203 may be located outside of chip 10200.

[0239] This disclosure also proposes a storage medium storing instructions that, when executed on the communication device 10100, cause the communication device 10100 to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.

[0240] This disclosure also provides a program product that, when executed by the communication device 10100, causes the communication device 10100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0241] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

Claims

1. A signal transmission method, characterized in that, The method is performed by a first device, and the method includes: A first positioning signal is sent, and the first positioning signal and a second positioning signal are used for backscattering by a third device to locate the third device. The second positioning signal is sent by a second device, and the position of the first device is different from the position of the second device.

2. The method according to claim 1, characterized in that, The third device does not perform frequency offset on the first positioning signal and the second positioning signal, and the frequency positions of the first positioning signal and the second positioning signal do not overlap; or... The third device performs unidirectional frequency shift on the first positioning signal and the second positioning signal, and the frequency position of the first positioning signal does not overlap with the frequency position of the second positioning signal.

3. The method according to claim 2, characterized in that, The first frequency offset value of the unidirectional frequency offset is greater than 0 or less than 0.

4. The method according to claim 1, characterized in that, The third device performs bidirectional frequency shifting on the first positioning signal and the second positioning signal, such that the frequency position of the first positioning signal does not overlap with the frequency position of the second positioning signal, and the frequency position of the first positioning signal after bidirectional frequency shifting does not overlap with the frequency position of the second positioning signal after bidirectional frequency shifting.

5. The method according to claim 4, characterized in that, The frequency interval between the first positioning signal and the second positioning signal is greater than or equal to the sum of half the frequency of the first positioning signal after bidirectional frequency offset, half the frequency of the second positioning signal after bidirectional frequency offset, and twice the second frequency offset value.

6. The method according to claim 5, characterized in that, The second frequency offset value is greater than 0.

7. The method according to any one of claims 2 to 6, characterized in that, The first positioning signal and the second positioning signal are sent at the same time.

8. The method according to claim 1, characterized in that, The frequency position of the first positioning signal may be the same as or different from that of the second positioning signal.

9. The method according to claim 8, characterized in that, The transmission time of the first positioning signal is different from the transmission time of the second positioning signal.

10. A signal receiving method, characterized in that, The method is performed by a third device, and the method includes: Receive a first positioning signal and a second positioning signal, wherein the first positioning signal is sent by a first device and the second positioning signal is sent by a second device, and the positions of the first device and the second device are different; The first positioning signal and the second positioning signal are backscattered, and the first positioning signal and the second positioning signal are used to locate the third device.

11. The method according to claim 10, characterized in that, The third device does not perform frequency offset on the first positioning signal and the second positioning signal, and the frequency position of the first positioning signal does not overlap with the frequency position of the second positioning signal.

12. The method according to claim 10, characterized in that, The backscattering of the first positioning signal and the second positioning signal includes: The first positioning signal and the second positioning signal are subjected to unidirectional frequency shift; wherein the frequency position of the first positioning signal does not overlap with the frequency position of the second positioning signal.

13. The method according to claim 12, characterized in that, The first frequency offset value of the unidirectional frequency offset is greater than 0 or less than 0.

14. The method according to claim 10, characterized in that, The backscattering of the first positioning signal and the second positioning signal includes: The first positioning signal and the second positioning signal are subjected to bidirectional frequency shifting; wherein the frequency position of the first positioning signal does not overlap with the frequency position of the second positioning signal, and the frequency position of the first positioning signal after bidirectional frequency shifting is consistent with the bidirectional frequency shifting signal. The frequency positions of the second positioning signal after the rate offset do not overlap.

15. The method according to claim 14, characterized in that, The frequency interval between the first positioning signal and the second positioning signal includes half the frequency of the first positioning signal after bidirectional frequency offset, half the frequency of the second positioning signal after bidirectional frequency offset, and the sum of twice the second frequency offset value.

16. The method according to claim 15, characterized in that, The second frequency offset value is greater than 0.

17. The method according to any one of claims 11 to 16, characterized in that, The first positioning signal is sent at the same time as the second positioning signal.

18. The method according to claim 10, characterized in that, The frequency position of the first positioning signal may be the same as or different from that of the second positioning signal.

19. The method according to claim 18, characterized in that, The transmission time of the first positioning signal is different from the transmission time of the second positioning signal.

20. A signal receiving method, characterized in that, The method is performed by a fourth device, and the method includes: Receive a third positioning signal, the third positioning signal including a signal generated by a third device by backscattering a first positioning signal and a second positioning signal, the frequency position of the first positioning signal is different from the frequency position of the second positioning signal, the first positioning signal is sent by a first device, the second positioning signal is sent by a second device, and the position of the first device is different from the position of the second device; Time information is obtained based on the third positioning signal, and the time information includes the reception time of any one of the third positioning signals or the time difference between the reception times of any two positioning signals included in the third positioning signal.

21. The method according to claim 20, characterized in that, The method further includes: The time information is sent to a fifth device, which is used to locate the third device based on the time information.

22. A signal receiving method, characterized in that, The method is performed by a fifth device, and the method includes: The receiving time information is obtained by the fourth device based on the received third positioning signal. The third positioning signal includes a signal generated by the third device through backscattering of the first positioning signal and the second positioning signal. The first positioning signal is sent by the first device, and the second positioning signal is sent by the second device. The positions of the first device and the second device are different. The time information includes the receiving time of any one of the third positioning signals or the time difference between the receiving times of any two positioning signals included in the third positioning signal. The third device is located based on the time information.

23. A signal transmitting device, characterized in that, The device includes: The transceiver module is used to send a first positioning signal. The first positioning signal and the second positioning signal are used for backscattering by a third device to locate the third device. The second positioning signal is sent by a second device. The position of the first device is different from the position of the second device.

24. A signal receiving device, characterized in that, The device includes: The transceiver module is used to receive a first positioning signal and a second positioning signal. The first positioning signal is sent by a first device, and the second positioning signal is sent by a second device. The positions of the first device and the second device are different. The processing module is used to backscatter the first positioning signal and the second positioning signal, which are used to locate the third device.

25. A signal receiving device, characterized in that, The device includes: The transceiver module is used to receive a third positioning signal, which includes a signal generated by a third device through backscattering a first positioning signal and a second positioning signal. The frequency position of the first positioning signal is different from that of the second positioning signal. The first positioning signal is sent by a first device, and the second positioning signal is sent by a second device. The positions of the first device and the second device are different. The processing module is configured to acquire time information based on the third positioning signal, the time information including the received third positioning signal. The time difference between the reception time of any one of the positioning signals in the third positioning signal or between the reception times of any two positioning signals included in the third positioning signal.

26. A signal receiving device, characterized in that, The device includes: The transceiver module is used to receive time information, which is obtained by the fourth device based on the received third positioning signal. The third positioning signal includes a signal generated by the third device through backscattering of the first positioning signal and the second positioning signal. The first positioning signal is sent by the first device, and the second positioning signal is sent by the second device. The positions of the first device and the second device are different. The time information includes the reception time of any one of the third positioning signals or the time difference between the reception times of any two positioning signals included in the third positioning signal. The processing module is used to locate the third device based on the time information.

27. A communication device, characterized in that, The terminal includes: One or more processors; The processor is used to execute the signal transmission method according to any one of claims 1 to 9.

28. A communication device, characterized in that, include: One or more processors; The processor is used to execute the signal receiving method according to any one of claims 10 to 19.

29. A communication device, characterized in that, include: One or more processors; The processor is used to execute the signal transmission and reception method according to any one of claims 20 to 21.

30. A communication device, characterized in that, include: One or more processors; The processor is used to execute the signal transmission method according to claim 22.

31. A communication system, characterized in that, The communication system includes a first device, a second device, a third device, a fourth device, and a fifth device; wherein the first device or the second device is configured to perform the signal transmission method according to any one of claims 1 to 9, the third device is configured to perform the signal reception method according to any one of claims 10 to 19, the fourth device is configured to perform the signal reception method according to any one of claims 20 to 21, and the fifth device is configured to perform the signal transmission method according to claim 22.

32. A storage medium, characterized in that, The storage medium stores instructions that, when executed on a communication device, cause the communication device to perform the method as described in any one of claims 1 to 22.

33. A program product, characterized in that, When the program product is executed by a communication device, the communication device performs the method as described in any one of claims 1 to 22.

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