Signal transmitting and receiving method and device and storage medium

Abstract

A signal transceiving method, apparatus and storage medium, comprising: transmitting a first signal and a second signal, the first signal being used to wake up a second device (102), the duration of the first signal being greater than the wake-up duration of the second device (102), the second device (102) being used to backscatter the first signal and the second signal, the second signal being used to instruct positioning of the second device (102), the duration of the first signal being greater than the wake-up duration of the second device (102), the duration of the second signal being greater than the wake-up duration of the second device (102); the first signal is transmitted before the second signal. According to the present invention, the problem of how to position a device is solved, and the first device (101) ensures that the second device (102) can be timely awakened and positioned by sending a signal for awakening the second device (102) and for positioning the second device (102), thereby ensuring the accuracy of positioning the second device (102).

Description

Signal transmission and reception methods, devices and storage media

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

[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]

[0004] The solution provided in this disclosure solves the problem of how to locate a device. The first device sends signals to wake up the second device and to locate the second device, ensuring that the second device can be woken up and located in a timely manner, thus ensuring the accuracy of locating the second 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: transmitting a first signal and a second signal, the first signal being used to wake up a second device, the duration of the first signal being longer than the wake-up duration of the second device, the second device being used to backscatter the first signal and the second signal, the second signal being used to indicate the location of the second device, and the first signal being transmitted before the second signal.

[0007] According to a second aspect of the present disclosure, a signal receiving method is provided, the method being executed by a second device, the method comprising: receiving a first signal sent by a first device, switching to a wake-up state, wherein the duration of the first signal is greater than the wake-up duration of the second device;

[0008] Receive a second signal sent by the first device, the second signal being used to indicate the location of the second device;

[0009] The first signal and the second signal are backscattered.

[0010] According to a third aspect of the embodiments of this disclosure, a signal transmission and reception method is provided, the method comprising:

[0011] The first device sends a first signal and a second signal. The first signal is used to wake up the second device. The duration of the first signal is longer than the wake-up duration of the second device. The second device is used to backscatter the first signal and the second signal. The second signal is used to indicate the location of the second device. The first signal is sent before the second signal.

[0012] The second device receives the first signal sent by the first device and switches to the wake-up state, wherein the duration of the first signal is longer than the wake-up duration of the second device;

[0013] The second device receives a second signal sent by the first device, the second signal being used to indicate the location of the second device;

[0014] The second device backscatters the first signal and the second signal.

[0015] According to a fourth aspect of the present disclosure, a signal transmitting apparatus is provided, comprising: a transceiver module for transmitting a first signal and a second signal, the first signal being used to wake up a second device, the duration of the first signal being longer than the wake-up duration of the second device, the second device being used to backscatter the first signal and the second signal, the second signal being used to indicate the location of the second device, and the first signal being transmitted before the second signal.

[0016] According to a fifth aspect of the present disclosure, a signal receiving device is provided, comprising: a transceiver module, configured to receive a first signal sent by a first device, switch to a wake-up state, wherein the duration of the first signal is greater than the wake-up duration of the second device;

[0017] The transceiver module is further configured to receive a second signal sent by the first device, the second signal being used to indicate the location of the second device;

[0018] The processing module is used to backscatter the first signal and the second signal.

[0019] According to a sixth aspect of the present disclosure, an apparatus is provided, comprising: one or more processors; wherein the apparatus is configured to perform the method described in either the first aspect or the second aspect.

[0020] According to a seventh aspect of the present disclosure, a communication system is provided, comprising: a first device and a second device, wherein the first device is configured to implement the signal processing method of the first aspect, and the second device is configured to implement the signal processing method of the second aspect.

[0021] According to an eighth 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 or second aspects.

[0022] 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:

[0023] Figure 1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure;

[0024] Figure 2A is an interactive schematic diagram of a signal transmission and reception method according to an embodiment of the present disclosure;

[0025] Figure 2B is a schematic diagram illustrating the time delay according to an embodiment of the present disclosure;

[0026] Figure 2C is a schematic diagram of a signal structure according to an embodiment of the present disclosure;

[0027] Figure 2D is a schematic diagram illustrating signal positioning according to an embodiment of the present disclosure;

[0028] Figure 2E is a schematic diagram illustrating signal backscattering according to an embodiment of the present disclosure;

[0029] Figure 3A is a schematic flowchart illustrating a signal transmission method according to an embodiment of the present disclosure;

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

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

[0032] Figure 4B is a schematic flowchart illustrating a signal receiving method according to an embodiment of the present disclosure;

[0033] Figure 5 is a schematic flowchart of a signal processing method according to an embodiment of the present disclosure;

[0034] Figure 6 is a schematic flowchart illustrating a signal transmission method according to an embodiment of the present disclosure;

[0035] Figure 7A is a schematic diagram of the structure of the signal transceiver device proposed in an embodiment of this disclosure;

[0036] Figure 7B is a schematic diagram of the structure of the signal transceiver device proposed in an embodiment of this disclosure;

[0037] Figure 8A is a schematic diagram of the structure of the communication device proposed in an embodiment of this disclosure;

[0038] Figure 8B is a schematic diagram of the chip structure proposed in an embodiment of this disclosure.

[0039] This disclosure provides a signal processing method, apparatus, and storage medium.

[0040] According to a first aspect of the present disclosure, a signal processing method is provided, the method being executed by a first device, the method comprising: sending a first signal and a second signal, the first signal being used to wake up a second device, the duration of the first signal being longer than the wake-up duration of the second device, the second device being used to backscatter the first signal and the second signal, the second signal being used to indicate the location of the second device, and the first signal being sent before the second signal.

[0041] In the above embodiments, the problem of how to locate the device is solved. The first device sends signals for waking up the second device and for locating the second device, ensuring that the second device can be woken up and located in a timely manner, thus ensuring the accuracy of locating the second device.

[0042] In conjunction with some embodiments of the first aspect, in some embodiments, the second signal includes first identification information of the first device and / or second identification information of the second device.

[0043] In the above embodiments, the accuracy of the second signal transmission is ensured by indicating the first identification information of the first device and / or the second identification information of the second device in the second signal.

[0044] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0045] Send a third signal, the third signal including the first identification information of the first device and / or the second identification information of the second device.

[0046] In the above embodiments, the first identification information of the first device and / or the second identification information of the second device are transmitted separately via a third signal to ensure the accuracy of the transmission of the first identification information of the first device and / or the second identification information of the second device.

[0047] In conjunction with some embodiments of the first aspect, in some embodiments, the first signal includes at least one of the following:

[0048] A signal that remains at a high level.

[0049] A signal that alternates between high and low levels;

[0050] The signal is high-level during the first time period, and alternates between high-level and low-level signals during the second time period.

[0051] In conjunction with some embodiments of the first aspect, in some embodiments, the first signal is used for synchronization of the second device.

[0052] In the above embodiments, the second device is synchronized by the first signal to ensure the accuracy of the signal received by the second device.

[0053] In conjunction with some embodiments of the first aspect, in some embodiments, after sending the second signal, the method further includes:

[0054] A fourth signal is transmitted, which is used by the second device to modulate information during backscattering.

[0055] In the above embodiments, the information transmission is extended by modulating the information with a fourth signal, thereby ensuring the reliability of information transmission.

[0056] In conjunction with some embodiments of the first aspect, in some embodiments, the second signal includes a positioning sequence for indicating the positioning of the second device.

[0057] A second aspect of this disclosure provides a signal processing method, the method being executed by a second device, the method comprising:

[0058] Upon receiving a first signal from the first device, switch to wake-up state, wherein the duration of the first signal is longer than the wake-up duration of the second device;

[0059] Receive a second signal sent by the first device, the second signal being used to indicate the location of the second device;

[0060] The first signal and the second signal are backscattered.

[0061] In conjunction with some embodiments of the second aspect, in some embodiments, the second signal includes first identification information of the first device and / or second identification information of the second device.

[0062] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0063] Receive a third signal sent by the first device, the third signal including the first identification information of the first device and / or the second identification information of the second device;

[0064] The third signal is backscattered.

[0065] In conjunction with some embodiments of the second aspect, in some embodiments, the first signal includes at least one of the following:

[0066] A signal that remains at a high level.

[0067] A signal that alternates between high and low levels;

[0068] The signal is high-level during the first time period, and alternates between high-level and low-level signals during the second time period.

[0069] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0070] Synchronization is performed based on the first signal.

[0071] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0072] Receive the fourth signal sent by the first device;

[0073] Based on the fourth signal modulation information.

[0074] In conjunction with some embodiments of the second aspect, in some embodiments, the backscattering of the first signal and the second signal includes:

[0075] Determining that the second or third signal includes second identification information of a second device, perform unmodulated backscattering on the first and second signals; or,

[0076] Determining that the second or third signal includes an identification information group, the identification information group including second identification information of multiple second devices, performing unmodulated backscattering on the first and second signals, and modulating the second identification information of the second devices onto a fourth signal for backscattering; or,

[0077] If it is determined that the second signal or the third signal does not include the identification information of the second device, the first signal and the second signal are backscattered without modulation, and the second identification information of the second device is modulated onto the fourth signal and backscattered.

[0078] In conjunction with some embodiments of the second aspect, in some embodiments, the backscattering of the first signal and the second signal includes:

[0079] Before the first moment, the first signal and the second signal are backscattered without modulation;

[0080] After the second time point, the identification information and / or device information of the second device are modulated onto a fourth signal for backscattering, wherein the second time point is located after the first time point, and the second time point and the first time point are spaced apart by a first time period.

[0081] In conjunction with some embodiments of the second aspect, in some embodiments, the first duration is greater than or equal to the maximum value of the transmission delay between the first device and the second device.

[0082] In conjunction with some embodiments of the second aspect, in some embodiments, the second signal includes a positioning sequence for locating the second device.

[0083] Thirdly, 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.

[0084] Fourthly, embodiments of this disclosure provide a signal receiving device, which includes at least one of a transceiver module and a processing module; wherein the signal receiving device is used to execute an optional implementation of the second aspect.

[0085] Fifthly, embodiments of this disclosure provide an apparatus comprising: one or more processors; wherein the apparatus is configured to perform the method described in any one of the first or second aspects.

[0086] In a sixth aspect, embodiments of this disclosure provide a storage medium storing first information, which, when executed on a communication device, causes the communication device to perform the method as described in any one of the first or second aspects.

[0087] In a seventh aspect, 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 either the first or second aspect.

[0088] Eighthly, embodiments of this disclosure provide a computer program that, when run on a communication device, causes the communication device to perform the method as described in either the first or second aspect.

[0089] In a ninth aspect, 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 either the first or second aspect.

[0090] It is understood that the aforementioned terminals, 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.

[0091] This disclosure provides signal processing methods, apparatus, and storage media. In some embodiments, the terms "signal processing method" and "signal communication method" or "processing method" can be used interchangeably; the terms "signal processing apparatus" and "signal communication apparatus" or "processing apparatus" can be used interchangeably; and the terms "information processing system" or "communication system" can be used interchangeably.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] In the embodiments disclosed herein, "multiple" refers to two or more.

[0097] In some embodiments, the terms “at least one of”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0102] In some embodiments, terms such as "time / frequency" and "time-frequency domain" refer to the time domain and / or frequency domain.

[0103] In some embodiments, the terms “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “if…”, “if…”, etc., can be used interchangeably.

[0104] 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”.

[0105] 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.

[0106] In some embodiments, "network" can be interpreted as devices included in the network, such as access network devices, core network devices, etc.

[0107] 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)."

[0108] 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.

[0109] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0110] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0111] 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.

[0112] 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, and a third 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.

[0113] In some embodiments, the second device 102 includes, for example, at least one of the following: an Internet of Things (IoT) device, a mobile phone, a wearable device, a first device, a car with communication capabilities, a smart car, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) first device, an augmented reality (AR) first device, a wireless first device in industrial control, a wireless first device in self-driving, a wireless first device in remote medical surgery, a wireless first device in a smart grid, a wireless first device in transportation safety, a wireless first device in a smart city, and a wireless first device in a smart home, but is not limited thereto.

[0114] Optionally, the second device 102 is an Internet of Things (IoT) device. For example, the IoT device is an Ambient-IoT device. Compared with the NB-IoT first device, the Ambient-IoT device has lower complexity and cost, and lower maintenance cost. Its main feature is that it does not have a battery and is powered by electromagnetic signals it receives, or it has a battery with a small amount of energy storage capacity, but the battery does not need to be manually charged. Instead, it can obtain battery energy from external energy sources, such as electromagnetic waves, heat energy, kinetic energy, etc.

[0115] In some embodiments, different Ambient IoT devices differ in their operation and power acquisition and storage capabilities. Currently, Ambient IoT devices are categorized as follows:

[0116] Optionally, device A cannot perform independent signal generation / amplification; for example, it uses a backscattering operation mode.

[0117] 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.

[0118] Optionally, device C has energy storage capabilities and can generate signals independently, such as having an RF (Radio Frequency) module that actively transmits signals.

[0119] 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.

[0120] Optionally, for devices using backscattering, the general workflow is as follows: the network sends a downlink command to the device, and 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.

[0121] 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.

[0122] 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.

[0123] In some embodiments, the first device 101 in this disclosure is used to transmit downlink signals. Optionally, the first device 101 is a DSN (Downlink Signal Node). In some embodiments, the first device 101 in this disclosure 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). Optionally, the first device 101 is a node or device that connects a terminal to a wireless network. The first device 101 may include at least one of the following in a 5G communication system: evolved Node B (eNB), next-generation evolved Node B (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.

[0124] In some embodiments, the third device 103 in this disclosure is used to receive signals sent by the second device 102 in order to obtain the time of receiving the signals sent by the second device 102. Optionally, the third device 103 is an UR (Uplink receiver). Optionally, the third device 103 is a node or device that connects the terminal to the wireless network. The third device 103 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.

[0125] In some embodiments, this disclosure also includes a fifth device 105 for providing power to the second device 102 so that the second device 102 can use the power provided by the fifth device 105 to send, receive or process data.

[0126] It should be noted that the first device 101, the third device 103, and the fifth device 105 in this embodiment may belong to the same device or to different devices, and this embodiment does not limit this.

[0127] In some embodiments of this disclosure, the fourth device 104 is used to locate the second device 102. In this embodiment of this disclosure, the fourth device 104 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).

[0128] Referring to Figure 1, the communication system in this embodiment includes four links, wherein link 1 is the link for data transmission between the first device 101 and the second device 102, link 2 is the link for data transmission between the third device 103 and the second device 102, link 3 is the link for data transmission between the first device 101 and the second device 102, and link 4 is the link for providing power to the second device 102.

[0129] 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.

[0130] 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 protocol layer functions are centrally controlled by the CU, while the remaining part or all protocol layer functions are distributed in the DU and centrally controlled by the CU. However, this is not the only possibility.

[0131] 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.

[0132] 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.

[0133] 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).

[0134] 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 processing method, which includes:

[0135] Step S2101: The first device sends a first signal.

[0136] In some embodiments, the second device receives the first signal.

[0137] In some embodiments, the first signal is used to wake up the second device. In this embodiment of the disclosure, the first signal sent by the first device is used to wake up the second device, and after receiving the first signal, the second device performs a wake-up operation. Optionally, when the second device switches to the wake-up state, a certain delay is required to complete the wake-up process; this delay can be referred to as the wake-up duration or the wake-up delay.

[0138] Optionally, referring to Figure 2B, for a second device in a dormant state, upon receiving the first signal, it needs to experience a wake-up delay before reaching normal operation. For different first devices, if the second device is in a dormant state, due to the varying distances between the first devices and the second device, the signal from the first device arriving first will experience a wake-up delay before activating the second device, and then the second device will be backscattered (before backscattering, in addition to this wake-up delay, there may also be signal processing delays, etc.). Signals from subsequent first devices will experience a shorter delay than the wake-up delay (because the second device is already partially activated), and can be backscattered, or even without experiencing a delay (because the second device is already fully activated).

[0139] In some embodiments, the duration of the first signal is longer than the wake-up duration of the second device. In this embodiment of the disclosure, the duration of the first signal is longer than the wake-up duration of the second device, ensuring that the second device receives the second signal after being fully woken up.

[0140] Optionally, the duration of the first signal refers to the time required for the first signal to be transmitted from start to end. Optionally, the first signal includes a start time and an end time, and the duration between the start time and the end time is the duration of the first signal.

[0141] In some embodiments, the first signal includes at least one of the following:

[0142] (1) A signal that is continuously at a high level.

[0143] In some embodiments, the signal that is continuously high is a CW signal, or other signals, which are not limited in the embodiments disclosed herein.

[0144] (2) Signals that alternate between high and low levels;

[0145] In some embodiments, the alternating high and low level signals constitute a preamble sequence. Alternatively, the preamble sequence can also be understood as a preamble. This preamble sequence can be used to wake up a second device, to indicate the activation of a positioning sequence, or to enable chip-level synchronization for the second device.

[0146] (3) The signal is high level during the first time period and alternates between high and low level during the second time period.

[0147] In some embodiments, the sum of the first time period and the second time period is greater than the wake-up duration of the second device.

[0148] It should be noted that there are multiple first devices, and the frequency and position of the first signal sent by different first devices are different.

[0149] In step S2102, after receiving the first signal sent by the first device, the second device switches to the wake-up state and performs synchronization.

[0150] In some embodiments, the signal corresponding to the second time segment of the first signal is used for synchronization by the second device. In this embodiment, after receiving the first signal, the second device can perform synchronization to ensure the accuracy of subsequent signal reception. In some embodiments, after the second device performs unmodulated backscattering of the first signal, the backscattered first signal is received by a third device. The signal corresponding to the second time segment of the backscattered first signal is used for synchronization by the third device.

[0151] It should be noted that the synchronization of the second device in this embodiment refers to synchronization in the time domain, or it can also be understood as synchronization in time. This embodiment does not limit this.

[0152] Optionally, if the first signal indicates the time when a subsequent signal is transmitted, the second device determines the start time of the subsequent signal based on the first signal. In some embodiments, after the second device performs unmodulated backscattering on the first signal, the third device receives the backscattered first signal. The signal corresponding to the second time segment in the backscattered first signal is used by the third device to determine the start time of the subsequent signal.

[0153] In step S2103, the first device sends a second signal.

[0154] In this embodiment, the first signal sent by the first device precedes the second signal. In some embodiments, the second device receives the second signal.

[0155] In some embodiments, the second signal is used to indicate the location of the second device. In some embodiments, after receiving the second signal, the second device backscatters the second signal.

[0156] In some embodiments, the second device uses the start or end time of receiving the second signal as the reception time of the second signal.

[0157] In some embodiments, the second signal includes first identification information of the first device and / or second identification information of the second device. Optionally, the second signal includes a positioning sequence used to indicate positioning of the second device. In some embodiments, the initialization sequence of the positioning sequence includes the first identification information of the first device and / or the second identification information of the second device. The positioning sequence is a sequence with good autocorrelation and poor cross-correlation, such as a ZC sequence or a gold sequence.

[0158] It should be noted that if the second signal does not include the second identification information of the second device, then all second devices that receive the second signal can be located.

[0159] It should be noted that the embodiments disclosed herein are illustrated using the example of the second signal including the first identification information of the first device and / or the second identification information of the second device. In another embodiment, the first identification information of the first device and / or the second identification information of the second device may also be carried separately before or after the second signal.

[0160] In some embodiments, the first device transmits a third signal. Correspondingly, the second device receives the third signal and backscatters it. Optionally, the third signal includes first identification information of the first device and / or second identification information of the second device.

[0161] It should be noted that the first device sending the third signal is performed after step S2102, which can also be understood as the third signal being sent after the second signal. In another embodiment, the first device sending the third signal can also be performed between steps S2101 and S2102, and this disclosure does not limit this.

[0162] In step S2104, the second device backscatters the first signal and the second signal.

[0163] In some embodiments, the second device performs unmodulated backscattering on the first signal and the second signal. Optionally, unmodulated backscattering means that after receiving the first signal and the second signal, the second device directly backscatters the first signal and the second signal without adding any additional information.

[0164] In step S2105, the first device sends the fourth signal.

[0165] In some embodiments, the fourth signal is used by the second device to modulate information during backscattering. In embodiments of this disclosure, the second device may modulate information onto the fourth signal, and subsequently backscatter the modulated fourth signal.

[0166] In some embodiments, determining the second or third signal includes second identification information of a second device, and performing unmodulated backscattering on the first and second signals.

[0167] In some embodiments, determining the second signal or the third signal includes an identification information group, the identification information group including second identification information of a plurality of second devices, performing unmodulated backscattering on the first signal and the second signal, and modulating the second identification information of the second device onto a fourth signal for backscattering.

[0168] In some embodiments, it is determined that the second signal or the third signal does not include the identification information of the second device, and the first signal and the second signal are backscattered without modulation, and the second identification information of the second device is modulated onto the fourth signal and backscattered.

[0169] In some embodiments, before a first moment, the first signal and the second signal are backscattered without modulation.

[0170] In some embodiments, after the second time point, the identification information and / or device information of the second device are modulated onto a fourth signal for backscattering, wherein the second time point is located after the first time point, and the second time point and the first time point are spaced apart by a first time period.

[0171] Optionally, the first duration is greater than or equal to the maximum value of the transmission delay between the first device and the second device.

[0172] Step S2106: The second device modulates the information based on the fourth signal.

[0173] It should be noted that steps S2105-S2106 in this embodiment are optional steps. If the second device does not require modulation information, then steps S2105-S2106 do not need to be executed.

[0174] It should be noted that the embodiments disclosed herein are described using a first signal, a second signal, a third signal, and a fourth signal, respectively. Optionally, the first signal, the second signal, the third signal, and the fourth signal may be continuous signals or signals spaced at certain intervals. In another embodiment, the first signal, the second signal, the third signal, and the fourth signal may also be a single signal, wherein the single signal comprises four parts.

[0175] Furthermore, the order of the first signal, second signal, third signal, and fourth signal in this embodiment is not limited. Referring to Figure 2C, the following example illustrates the first signal as CW1, the second signal as a positioning sequence, the third signal as the first identification information of the first device and / or the identification information of the second device, and the fourth signal as CW2.

[0176] In step S2107, the third device receives the signal backscattered by the second device.

[0177] In this embodiment of the disclosure, the third device receives the backscattered signal from the second device and obtains the time of receiving each signal, and then reports the time to the fourth device.

[0178] In some embodiments, when the third device sends the signal that it has received backscattered by the second device, the fourth device can receive the signal that the third device has sent that it has received backscattered by the second device.

[0179] In step S2108, the fourth device locates the second device based on the moment when the third device receives the signal backscattered by the second device.

[0180] In some embodiments, referring to Figure 2D, an example is given where the first device is a CWN / DSN, the second device is a device, and the third device is a UR. Multiple CWNs / DSNs transmit positioning signals simultaneously, and the UR may receive signals from different CWNs / DSNs at the same or different times. 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 device's location.

[0181] This topology includes two links: one between the CWN / DSN and the device, and another between the device and the UR. Different CWN / DSNs and devices may be the same or different, and there is a time difference (either zero or non-zero) between the backscattered positioning signals received by the UR from different CWN / DSNs. Let T be the time difference between the time the UR receives the backscattered positioning signal from CWN1 / DSN1 and the time the UR receives the backscattered positioning signal from CWN2 / DSN2. 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 .

[0182] The difference between the distance from device to CWN1 / DSN1 and the distance from 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.

[0183] Referring to Figure 2E, an example is given of performing unmodulated backscattering on a portion of the signal and modulated backscattering on another portion. The device receives signals of different frequencies from multiple CWN / DSNs sequentially. Before the first moment, the device performs unmodulated backscattering on all these signals. At the first moment, it performs modulated backscattering, modulating the information onto the backscattered signals. The modulated information can be the device ID, or it can include other information, such as the device's measured velocity, angular velocity, acceleration, temperature, etc. The first moment can be the moment after the end of the first positioning sequence received by the device and an interval T1 from the positioning sequence. T1 should be greater than or equal to the maximum value of the difference in propagation delay between the CWN / DSNs and the device to ensure that when the device begins backscattering, the positioning sequences transmitted by the multiple CWN / DSNs have all been received.

[0184] Furthermore, positioning signals from CWN / DSN arriving at different times may experience different wake-up delays, and even positioning signals from CWN / DSN arriving later may not require a wake-up delay. The duration of CW1 should be greater than or equal to the wake-up delay.

[0185] The reception time of the positioning signal of each CWN / DSN determined by the UR is also the start or end time of the positioning sequence of each CWN / DSN in the backscattered signal. Since they are located in different frequency domains, the UR can distinguish the positioning signals of each CWN / DSN. Referring to Figure 2E, t1B / t2B / t3B are the reception times of the signals of each CWN / DSN.

[0186] The signal processing method disclosed in this embodiment may include at least one of steps S2101 to S2108. 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, and at least one of steps S2101 to S2108 may be implemented as an independent embodiment, but is not limited thereto.

[0187] In some embodiments, at least one of steps S2101-S2108 is optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0188] It should be noted that the execution order of steps S2101-S2108 in the embodiments of this disclosure can be appropriately adjusted, and the embodiments of this disclosure do not limit the execution order of the above steps S2101-S2108.

[0189] In some embodiments, other alternative implementations may be described before or after the specification corresponding to FIG2A.

[0190] 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.

[0191] 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".

[0192] 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.

[0193] In some embodiments, terms such as “send,” “transmit,” “report,” “distribute,” “transfer,” “bidirectional transmission,” “send and / or receive” can be used interchangeably.

[0194] 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.”

[0195] 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.

[0196] Figure 3A 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 3A, the present disclosure relates to a signal transmission method, which includes:

[0197] Step S3101: The first device sends a first signal.

[0198] 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.

[0199] In step S3102, the first device sends a second signal.

[0200] The optional implementation of step S3102 can be found in the optional implementation of step S2102 in Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0201] In step S3103, the first device sends the fourth signal.

[0202] The optional implementation of step S3103 can be found in the optional implementation of step S2104 in Figure 2A, as well as other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0203] The signal processing method disclosed in this embodiment may include at least one of steps S3101 to S3104. For example, step S3101 may be implemented as an independent embodiment, step S3102 may be implemented as an independent embodiment, step S3103 may be implemented as an independent embodiment, step S3104 may be implemented as an independent embodiment, and at least one of steps S3101 to S3104 may be implemented as an independent embodiment, but is not limited thereto.

[0204] Figure 3B 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 3B, the present disclosure relates to a signal transmission method, which includes:

[0205] Step S3201: The first device sends a first signal.

[0206] The optional implementation of step S3201 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.

[0207] In step S3202, the first device sends a second signal.

[0208] The optional implementation of step S3202 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.

[0209] Figure 4A is a schematic flowchart illustrating a signal receiving method according to an embodiment of the present disclosure, applied to a second device. As shown in Figure 4A, the present disclosure relates to a signal receiving method, which includes:

[0210] In step S4101, after receiving the first signal sent by the first device, the second device switches to the wake-up state and performs synchronization.

[0211] 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.

[0212] In step S4102, the second device backscatters the first signal and the second signal.

[0213] Optional implementations of step S4102 can be found in step S2104 of Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0214] In step S4103, the second device modulates the information based on the fourth signal.

[0215] Optional implementations of step S4103 can be found in step S2106 of Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0216] Figure 4B 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 4B, the present disclosure relates to a signal receiving method, which includes:

[0217] Step S4201: The second device receives the first signal.

[0218] The optional implementation of step S4201 can be found in step S2101 of Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0219] In step S4202, the second device receives the second signal.

[0220] Optional implementations of step S4202 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.

[0221] In step S4203, the second device backscatters the first signal and the second signal.

[0222] Optional implementations of step S4203 can be found in step S2104 of Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0223] Figure 5 is a schematic flowchart illustrating a signal transmission and reception method according to an embodiment of the present disclosure. As shown in Figure 5, the present disclosure relates to a signal transmission and reception method, which includes:

[0224] Step S5101: The first device sends a first signal.

[0225] The optional implementation of step S5101 can be found in step S2101 of Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0226] In step S5102, the first device sends a second signal.

[0227] Optional implementations of step S5102 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.

[0228] In step S5103, the second device receives the first signal.

[0229] The optional implementation of step S5103 can be found in step S2101 of Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0230] Step S5104: The second device receives the second signal.

[0231] The optional implementation of step S5104 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.

[0232] In step S5105, the second device backscatters the first signal and the second signal.

[0233] Optional implementations of step S5105 can be found in step S2104 of Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0234] The signal processing method disclosed in this embodiment may include at least one of steps S5101 to S5104. For example, step S5101 may be implemented as an independent embodiment, step S5102 may be implemented as an independent embodiment, step S5103 may be implemented as an independent embodiment, and step S5104 may be implemented as an independent embodiment, but is not limited thereto.

[0235] Figure 6 is a schematic flowchart illustrating a signal transmission method according to an embodiment of the present disclosure. As shown in Figure 6, the present disclosure relates to a signal processing method, which includes:

[0236] Step S6101: DSN / CWN sends a positioning signal.

[0237] In some embodiments, the positioning signal consists of at least two parts: a positioning sequence and a CW1 preceding the positioning sequence.

[0238] a) Before the positioning sequence, the duration of CW1 is at least T1. The duration of T1 is greater than or equal to the device's wake-up delay. This ensures that the device is fully awake and in normal working condition before the positioning sequence arrives, so that the device can detect the complete positioning sequence normally. The reception time of the positioning sequence (e.g., the start time of receiving the positioning sequence, or the end time of receiving the positioning sequence) is used as the reception time of the positioning signal.

[0239] (b) The positioning sequence can carry CWN / DSN ID information and / or device ID information. For example, the initialization sequence of the positioning sequence carries CWN / DSN ID information and / or device ID information. The positioning sequence can be a ZC sequence, a gold sequence, or other sequences with good autocorrelation and poor cross-correlation. The ID information can also be called index information. The CWN / DSN ID information is used to identify which CWN / DSN the positioning sequence was sent from, and the device ID is used to indicate which device or group of devices the positioning information is for. When the positioning signal does not contain device ID information, i.e., no specific device is specified, any device that receives the positioning information can be used for positioning.

[0240] c) The ID information of CWN / DSN and / or device ID information can also be carried separately before or after the location sequence.

[0241] d) A preamble may also be included between CW1 and the positioning sequence. For example, the preamble may be a sequence containing periodic on-off waveforms. Alternatively, the preamble may be a symbol containing a special waveform used to indicate the start of the positioning sequence.

[0242] e) CW1 may also be entirely replaced by a preamble. For example, a preamble could be a sequence containing periodic on-off waveforms. Alternatively, a preamble could be a symbol containing a special waveform used to indicate the start of a positioning sequence.

[0243] f) Following the positioning sequence, there may be a CW2. The duration of CW2 is at least T2. CW2 is used by the device to add modulation information, such as device ID information, to the backscattered signal. The duration of T2 should be greater than or equal to the length of the modulation portion and the maximum value of the difference between the propagation delays of multiple CWNs and the device (the propagation delay between the CWN and the device is the distance between the CWN and the device divided by the speed of light). If the device does not need to modulate any information, then the CW2 portion can be omitted.

[0244] In step S6102, the device performs backscattering.

[0245] Once the positioning signal reaches the device, the device will activate (if it was previously in a dormant state) and backscatter the positioning signal.

[0246] Backscattering of positioning signals includes at least unmodulated backscattering of all or part of the positioning signal. That is, the device does not modulate information onto the received positioning signal, but directly backscatters all or part of the received positioning signal. It can also include modulated backscattering, where the device modulates the received positioning signal, carrying the device's information onto the backscattered signal.

[0247] a) An example of unmodulated backscattering of all positioning signals: The positioning signal already contains a unique target device ID. When the device receives the positioning signal, it can directly backscatter the positioning signal of the group without modulating its own device ID information onto the backscattered signal.

[0248] b) An example of performing unmodulated backscattering and modulated backscattering on a portion of the positioning signal: The positioning signal contains information about a target device group (i.e., multiple devices). When a device receives the positioning signal, it performs unmodulated backscattering on the CW1 / positioning sequence / CWN / DSN index portion. However, at a certain time period corresponding to CW2, it needs to modulate its own device ID information onto the backscattered signal (modulated backscattering) so that the UR can determine which device the backscattered signal originates from.

[0249] c) An example of performing unmodulated backscattering and modulated backscattering on a portion of the positioning signal: The positioning signal does not contain target device ID or group information. When the device receives the positioning signal, it performs unmodulated backscattering on the CW1 / positioning sequence / CWN / DSN index portion. However, at a certain moment corresponding to CW2, it needs to modulate its own device ID information onto the backscattered signal so that the UR can determine which device the backscattered signal originated from.

[0250] 2Device may also amplify the power of the received location signal to extend coverage.

[0251] In some embodiments, an example of performing unmodulated backscattering on a portion of the positioning signal and modulated backscattering on the other portion is illustrated in Figure 2E. The device receives positioning signals of different frequencies transmitted by multiple CWN / DSNs sequentially. Before a first moment, the device performs unmodulated backscattering on all these positioning signals, and at the first moment, performs modulated backscattering, modulating the information onto the backscattered signals. The modulated information may be the device ID, and may also include other information, such as the device's measured velocity, angular velocity, acceleration, temperature, etc.

[0252] The first moment can be the moment after the end of the first location sequence received by the device and an interval T1 from the location sequence. T1 should be greater than or equal to the maximum value of the difference in propagation delay between the CWN / DSN and the device, so as to ensure that when the device starts backscattering, the location sequences sent by the plurality of CWN / DSNs have been received.

[0253] As can be seen from the diagram below, positioning signals arriving at different times in the CWN / DSN may experience different wake-up delays, and even positioning signals arriving later in the CWN / DSN may not require a wake-up delay. The duration of CW1 should be greater than or equal to the wake-up delay.

[0254] The reception time of the positioning signal of each CWN / DSN determined by the UR is also the start or end time of the positioning sequence of each CWN / DSN in the backscattered signal. Since they are located in different frequency domains, the UR can distinguish the positioning signal of each CWN / DSN. Taking Figure 2E as an example, t1B / t2B / t3B are the reception times of the positioning signal of each CWN / DSN.

[0255] In another embodiment, the positioning signals of each CWN / DSN can be transmitted at the same frequency and location within different time periods. The UR calculates the aforementioned T by calculating the propagation delay of the positioning signal transmitted by each CWN, that is, the time from the moment the CWN transmits the positioning signal to the moment the UR receives the positioning signal backscattered by the device. diff12 T diff13 T diff23 And based on this, locate the target device.

[0256] 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.

[0257] 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.

[0258] 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.

[0259] 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).

[0260] Figure 7A is a schematic diagram of the structure of a signal transmitting device according to an embodiment of this disclosure. As shown in Figure 7A, the signal transmitting device 7100 may include at least one of a transceiver module 7101, a processing module 7102, etc. In some embodiments, the transceiver module 7101 is used to transmit a first signal and a second signal, the first signal being used to wake up a second device, the duration of the first signal being longer than the wake-up duration of the second device, the second device being used to backscatter the first signal and the second signal, the second signal being used to indicate the location of the second device, and the first signal being transmitted before the second signal. Optionally, the transceiver module 7101 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 elaborated 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 elaborated here.

[0261] Optionally, the processing module 7102 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.

[0262] Figure 7B is a schematic diagram of the structure of a signal receiving device according to an embodiment of this disclosure. As shown in Figure 7B, the signal receiving device 7200 may include at least one of a transceiver module 7201 and a processing module 7202. In some embodiments, the transceiver module 7201 is used to receive a first signal sent by a first device, switch to a wake-up state, wherein the duration of the first signal is longer than the wake-up duration of the second device; receive a second signal sent by the first device, wherein the second signal is used to indicate the location of the second device; and the processing module 7202 is used to backscatter the first signal and the second signal. Optionally, the transceiver module 7201 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, 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.

[0263] Optionally, the processing module 7202 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.

[0264] 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.

[0265] 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.

[0266] Figure 8A is a schematic diagram of the structure of the communication device 8100 proposed in an embodiment of this disclosure. The communication device 8100 can be a network device (e.g., access network device, core network device, etc.), a terminal, 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 8100 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.

[0267] As shown in Figure 8A, the communication device 8100 includes one or more processors 8101. The processor 8101 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 8100 is used to execute any of the above methods.

[0268] In some embodiments, the communication device 8100 further includes one or more memories 8102 for storing instructions. Optionally, all or part of the memories 8102 may also be located outside the communication device 8100.

[0269] In some embodiments, the communication device 8100 further includes one or more transceivers 8103. When the communication device 8100 includes one or more transceivers 8103, the transceivers 8103 perform at least one of the communication steps such as sending and / or receiving in the above method (e.g., steps S2101, S2102, S2103, S2104, but not limited thereto).

[0270] 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.

[0271] In some embodiments, the communication device 8100 may include one or more interface circuits 8104. Optionally, the interface circuit 8104 is connected to the memory 8102, and the interface circuit 8104 can be used to receive signals from the memory 8102 or other devices, and can be used to send signals to the memory 8102 or other devices. For example, the interface circuit 8104 can read instructions stored in the memory 8102 and send the instructions to the processor 8101.

[0272] The communication device 8100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 8100 described in this disclosure is not limited thereto, and the structure of the communication device 8100 may not be limited by FIG8A. 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.

[0273] Figure 8B is a schematic diagram of the structure of chip 8200 according to an embodiment of this disclosure. For cases where the communication device 8100 can be a chip or a chip system, please refer to the schematic diagram of chip 8200 shown in Figure 8B, but it is not limited thereto.

[0274] Chip 8200 includes one or more processors 8201, which are used to perform any of the above methods.

[0275] In some embodiments, chip 8200 further includes one or more interface circuits 8202. Optionally, the interface circuit 8202 is connected to memory 8203, and the interface circuit 8202 can be used to receive signals from memory 8203 or other devices, and the interface circuit 8202 can be used to send signals to memory 8203 or other devices. For example, the interface circuit 8202 can read instructions stored in memory 8203 and send the instructions to processor 8201.

[0276] In some embodiments, the interface circuit 8202 performs at least one of the communication steps such as sending and / or receiving in the above method, and the processor 8201 performs at least one of the other steps.

[0277] In some embodiments, the terms interface circuit, interface, transceiver pin, transceiver, etc., can be used interchangeably.

[0278] In some embodiments, chip 8200 further includes one or more memories 8203 for storing instructions. Optionally, all or part of the memories 8203 may be located outside of chip 8200.

[0279] This disclosure also proposes a storage medium storing instructions that, when executed on a communication device 8100, cause the communication device 8100 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.

[0280] This disclosure also provides a program product that, when executed by the communication device 8100, causes the communication device 8100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0281] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

Claims

A signal transmission method, characterized in that, The method is performed by a first device and includes: sending a first signal and a second signal, wherein the first signal is used to wake up a second device, the duration of the first signal is longer than the wake-up duration of the second device, the second device is used to backscatter the first signal and the second signal, the second signal is used to indicate the location of the second device, and the first signal is sent before the second signal. The method according to claim 1, characterized in that, The second signal includes the first identification information of the first device and / or the second identification information of the second device. The method according to claim 1, characterized in that, The method further includes: sending a third signal, the third signal including first identification information of the first device and / or second identification information of the second device. The method according to any one of claims 1 to 3, characterized in that, The first signal includes at least one of the following: a signal that is continuously high; a signal that alternates between high and low levels; a signal that is high during a first time period and alternates between high and low levels during a second time period. The method according to any one of claims 1 to 4, characterized in that, The first signal is used for synchronization of the second device. The method according to any one of claims 1 to 5, characterized in that, After sending the second signal, the method further includes sending a fourth signal, the fourth signal being used by the second device to modulate information during backscattering. The method according to any one of claims 1 to 6, characterized in that, The second signal includes a positioning sequence, which indicates the positioning of the second device. A signal receiving method, characterized in that, The method is executed by a second device, and the method includes: receiving a first signal sent by a first device, switching to a wake-up state, wherein the duration of the first signal is longer than the wake-up duration of the second device; receiving a second signal sent by the first device, wherein the second signal is used to indicate the location of the second device; and backscattering the first signal and the second signal. The method according to claim 8, characterized in that, The second signal includes the first identification information of the first device and / or the second identification information of the second device. The method according to claim 8, characterized in that, The method further includes: receiving a third signal sent by the first device, the third signal including first identification information of the first device and / or second identification information of the second device; and backscattering the third signal. The method according to any one of claims 8 to 10, characterized in that, The first signal includes at least one of the following: a signal that is continuously high; a signal that alternates between high and low levels; a signal that is high during a first time period and alternates between high and low levels during a second time period. The method according to any one of claims 8 to 11, characterized in that, The method further includes: synchronizing based on the first signal. The method according to any one of claims 8 to 12, characterized in that, The method further includes: receiving a fourth signal sent by the first device; and modulating information based on the fourth signal. The method according to any one of claims 8 to 13, characterized in that, The backscattering of the first signal and the second signal includes: determining that the second signal or the third signal includes second identification information of a second device, and performing unmodulated backscattering on the first signal and the second signal; or, determining that the second signal or the third signal includes a group of identification information, the group of identification information including second identification information of multiple second devices, performing unmodulated backscattering on the first signal and the second signal, and modulating the second identification information of the second device onto a fourth signal for backscattering; or, determining that the second signal or the third signal does not include the identification information of the second device, performing unmodulated backscattering on the first signal and the second signal, and modulating the second identification information of the second device onto a fourth signal for backscattering. The method according to any one of claims 8 to 13, characterized in that, The backscattering of the first signal and the second signal includes: performing unmodulated backscattering of the first signal and the second signal before a first time moment; and modulating the identification information and / or device information of the second device onto a fourth signal for backscattering after a second time moment, wherein the second time moment is after the first time moment, and the second time moment is spaced apart from the first time moment by a first time interval. The method according to claim 15, characterized in that, The first duration is greater than or equal to the maximum value of the transmission delay between the first device and the second device. The method according to any one of claims 8 to 16, characterized in that, The second signal includes a positioning sequence used to locate the second device. A signal transmitting device, characterized in that, The device includes: a transceiver module for transmitting a first signal and a second signal, the first signal being used to wake up a second device, the duration of the first signal being longer than the wake-up duration of the second device, the second device being used to backscatter the first signal and the second signal, the second signal being used to indicate the location of the second device, and the first signal being transmitted before the second signal. A signal receiving device, characterized in that, The device includes: a transceiver module for receiving a first signal sent by a first device and switching to a wake-up state, wherein the duration of the first signal is longer than the wake-up duration of the second device; the transceiver module is further configured to receive a second signal sent by the first device, wherein the second signal is used to indicate the location of the second device; and a processing module for backscattering the first signal and the second signal. A first device, characterized in that, The first device includes: one or more processors; wherein the processors are configured to perform the signal transmission method according to any one of claims 1 to 7. A second device, characterized in that, The second device includes: one or more processors; wherein the processors are configured to perform the signal receiving method according to any one of claims 8 to 17. A communication system, characterized in that, The communication system includes a first device and a second device; the first device is configured to perform the signal transmission method according to any one of claims 1 to 7, and the second device is configured to perform the signal reception method according to any one of claims 8 to 17. 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 signal transmission method or signal reception method as described in any one of claims 1 to 17. A program product, characterized in that, When the program product is executed by a communication device, the communication device performs the signal transmission method or signal reception method as described in any one of claims 1 to 17.

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