Signal transmitting and receiving method and device and storage medium

Abstract

The invention relates to a signal receiving and transmitting method and device and a storage medium, and the method comprises the steps: receiving a first signal transmitted by a first device, the first signal comprising first information, and the first information being used for indicating that the first signal is used for positioning a terminal; performing backscattering based on the first signal to generate a second signal; sending the second signal to a second device, wherein the second signal comprises a positioning sequence; and receiving a third signal sent by a third device, wherein the third signal is used for the terminal to perform backscattering to generate the second signal. In the above embodiment, the problem of how to position the terminal is solved, the terminal receives the signal for positioning and then generates the second signal based on the indication of the signal, and the second signal is used for the second device to obtain the receiving moment, so that the terminal is subsequently positioned based on the receiving moment, and the accuracy of terminal positioning is ensured.

Description

Signal transceiving method, apparatus, and storage medium TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication, and particularly relates to a signal transceiving method, apparatus, and storage medium. BACKGROUND

[0002] With the rapid development of mobile communication technology and Internet of Things technology, an object can be perceived and positioned through a signal of a device in the Internet of Things technology, so as to ensure the accuracy of positioning of the object.

[0003] SUMMARY

[0004] The scheme provided by the present disclosure solves the problem of how to position a terminal. The terminal receives a signal for positioning, and generates a second signal based on an indication of the signal, so that a second device obtains a receiving time, so as to subsequently position the terminal based on the receiving time, thereby ensuring the accuracy of positioning of the terminal.

[0005] The present disclosure provides a signal transceiving method, apparatus, and storage medium.

[0006] According to a first aspect of the present disclosure, a signal transceiving method is provided, the method is executed by a terminal, and the method comprises:

[0007] receiving a first signal sent by a first device, wherein the first signal comprises first information, and the first information is used to indicate that the first signal is used for positioning the terminal;

[0008] generating a second signal based on backscattering of the first signal;

[0009] sending the second signal to a second device, wherein the second signal comprises a positioning sequence;

[0010] receiving a third signal sent by a third device, wherein the third signal is used for the terminal to generate the second signal through backscattering.

[0011] According to a second aspect of the present disclosure, a signal sending method is provided, the method is executed by a first device, and the method comprises: sending a first signal to a terminal, wherein the first signal comprises first information, and the first information is used to indicate that the first signal is used for positioning the terminal.

[0012] According to a third aspect of the present disclosure, a signal transceiving method is provided, the method is executed by a second device, and the method comprises: receiving a second signal sent by a terminal, wherein the second signal comprises a positioning sequence;

[0013] obtaining a time of receiving the second signal;

[0014] send the time to the fourth device;

[0015] The fourth device is configured to position the terminal based on the time.

[0016] According to a fourth aspect of the embodiments of the present disclosure, a signal sending method is provided, the method is performed by a second device, and the method includes: sending a third signal to a terminal, the third signal is used for the terminal to reflect to generate a second signal, and the second signal includes a positioning sequence.

[0017] According to a fifth aspect of the embodiments of the present disclosure, a signal receiving method is provided, the method is performed by a fourth device, and the method includes:

[0018] receiving a time sent by a second device, wherein the time is a time at which the second device receives a second signal sent by a terminal, and the second signal includes a positioning sequence;

[0019] positioning the terminal based on the time.

[0020] According to a sixth aspect of the embodiments of the present disclosure, a signal transceiving apparatus is provided, and the apparatus includes:

[0021] a transceiving module, configured to receive a first signal sent by a first device, the first signal includes first information, and the first information is used to indicate that the first signal is used for positioning the apparatus;

[0022] a processing module, configured to generate a second signal based on the first signal;

[0023] The transceiving module is further configured to send the second signal to a second device, the second signal includes a positioning sequence, and receive a third signal sent by a third device, the third signal is used for the apparatus to generate the second signal by backward scattering.

[0024] According to a seventh aspect of the embodiments of the present disclosure, a signal sending apparatus is provided, and the apparatus includes a transceiving module, configured to send a first signal to a terminal, the first signal includes first information, and the first information is used to indicate that the first signal is used for positioning the terminal.

[0025] According to an eighth aspect of the embodiments of the present disclosure, a signal transceiving apparatus is provided, and the apparatus includes:

[0026] a transceiving module, configured to receive a second signal sent by a terminal, the second signal includes a positioning sequence;

[0027] a processing module, configured to obtain a time at which the second signal is received;

[0028] The transceiving module is further configured to send the time to a fourth device;

[0029] The fourth device is configured to locate the terminal based on the time.

[0030] According to a ninth aspect of the embodiments of the present disclosure, a signal sending apparatus is provided, including: a transceiver module, configured to send a third signal to a terminal, the third signal being used for the terminal to backscatter a second signal, the second signal including a positioning sequence.

[0031] According to a tenth aspect of the embodiments of the present disclosure, a signal receiving apparatus is provided, including: a transceiver module, configured to receive a time sent by a second device, wherein the time is a time at which the second device receives a second signal sent by a terminal, the second signal including a positioning sequence.

[0032] A processing module is configured to locate the terminal based on the time.

[0033] According to an eleventh aspect of the embodiments of the present disclosure, a terminal is provided, including: one or more processors; wherein the terminal is configured to perform the method of any of the first aspect.

[0034] According to a twelfth aspect of the embodiments of the present disclosure, a communication device is provided, including: one or more processors; wherein the communication device is configured to perform the method of any of the second aspect, the third aspect, the fourth aspect or the fifth aspect.

[0035] According to a thirteenth aspect of the embodiments of the present disclosure, a communication system is provided, including: a terminal, a first device, a second device and a third device, wherein the terminal is configured to implement the signal sending and signal receiving method of the first aspect, the first device is configured to implement the signal sending method of the second aspect, the second device is configured to implement the signal sending and signal receiving method of the third aspect, and the third device is configured to implement the signal sending method of the fourth aspect.

[0036] According to a fourteenth aspect of the embodiments of the present disclosure, a storage medium is provided, the storage medium storing instructions, when the instructions are run on a communication device, causing the communication device to perform the method of any of the first aspect, the second aspect, the third aspect, the fourth aspect or the fifth aspect. BRIEF DESCRIPTION OF DRAWINGS

[0037] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present disclosure and constitute a part of the present disclosure, illustrate the exemplary embodiments of the present disclosure and the description thereof, and do not limit the present disclosure in any way. In the drawings:

[0038] FIG. 1 is an architecture schematic diagram of a communication system according to an embodiment of the present disclosure;

[0039] FIG. 2A is an interaction diagram of a signal transceiving method, according to an embodiment of the present disclosure;

[0040] FIG. 2B is a diagram of signal transmission, according to an embodiment of the present disclosure;

[0041] FIG. 3 is a flow diagram of a signal transmission method, according to an embodiment of the present disclosure;

[0042] FIG. 4 is a flow diagram of a signal transmission method, according to an embodiment of the present disclosure;

[0043] FIG. 5A is a flow diagram of a signal transmission method, according to an embodiment of the present disclosure;

[0044] FIG. 5B is a flow diagram of a signal transceiving method, according to an embodiment of the present disclosure;

[0045] FIG. 6 is a flow diagram of a signal transceiving method, according to an embodiment of the present disclosure;

[0046] FIG. 7A is a structural diagram of a signal transceiving apparatus, according to an embodiment of the present disclosure;

[0047] FIG. 7B is a structural diagram of a signal transmission apparatus, according to an embodiment of the present disclosure;

[0048] FIG. 7C is a structural diagram of a signal reception apparatus, according to an embodiment of the present disclosure;

[0049] FIG. 7D is a structural diagram of a signal transmission apparatus, according to an embodiment of the present disclosure;

[0050] FIG. 7E is a structural diagram of a signal reception apparatus, according to an embodiment of the present disclosure;

[0051] FIG. 8A is a structural diagram of a communication device, according to an embodiment of the present disclosure;

[0052] FIG. 8B is a structural diagram of a chip, according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0053] The present disclosure provides a signal transceiving method and apparatus, and a storage medium.

[0054] According to a first aspect of embodiments of the present disclosure, a signal transceiving method is provided. The method is performed by a terminal, and includes:

[0055] receiving a first signal transmitted by a first device, the first signal including first information, the first information being used to indicate that the first signal is used for positioning the terminal;

[0056] generating a second signal based on backscattering of the first signal; and

[0057] sending the second signal to a second device, the second signal comprising a positioning sequence;

[0058] receiving a third signal sent by a third device, the third signal being used for the terminal to generate the second signal by backscattering.

[0059] In the above embodiment, the problem of how to position the terminal is solved. The terminal generates the second signal based on the indication of the signal for positioning received by the terminal, so as to facilitate the second device to obtain the receiving time, so as to facilitate subsequent positioning of the terminal based on the receiving time, and ensure the accuracy of positioning of the terminal.

[0060] In combination with some embodiments of the first aspect, in some embodiments, the generating the second signal based on the first signal comprises:

[0061] modulating the third signal based on the information comprised in the first signal to generate the second signal, the second signal comprising a positioning sequence.

[0062] In the above embodiment, the third signal is modulated based on the information comprised in the first signal to obtain the second signal comprising the positioning sequence, so as to ensure subsequent sending of the second signal, and further ensure the accuracy of subsequent positioning of the terminal based on the second signal.

[0063] In combination with some embodiments of the first aspect, in some embodiments, the second signal further comprises at least one of:

[0064] second information, the second information being used for indicating a terminal identifier;

[0065] third information, the third information being used for indicating a preamble positioning sequence.

[0066] In the above embodiment, the comprehensiveness of the information carried by the second signal is ensured, and further the accuracy of positioning of the terminal based on the second signal is ensured.

[0067] In combination with some embodiments of the first aspect, in some embodiments, the first device and the third device are the same device, or the first device and the third device are different devices.

[0068] In combination with some embodiments of the first aspect, in some embodiments, the first signal comprises at least one of:

[0069] second information, the second information being used for indicating a terminal identifier;

[0070] fourth information, the fourth information being used for indicating a positioning sequence used for generating the second signal

[0071] fifth information for the terminal to amplify power of a third signal;

[0072] sixth information for indicating a modulation mode when the second signal is generated and / or a chip length of the second signal;

[0073] seventh information for indicating a frequency offset between the third signal and the second signal.

[0074] In the above embodiment, the types of information carried by the first signal are expanded, ensuring the comprehensiveness of the information carried by the first signal, and further ensuring the accuracy of subsequent positioning of the terminal.

[0075] In combination with some embodiments of the first aspect, in some embodiments, the positioning sequence includes any one of the following:

[0076] The positioning sequence is one, and one positioning sequence corresponds to the terminal; or

[0077] The positioning sequence is multiple, and each positioning sequence in the multiple positioning sequences corresponds to one terminal; or

[0078] The positioning sequence includes at least one positioning sequence group, one positioning sequence group corresponds to one terminal group, and the one terminal group includes multiple terminals.

[0079] In the above embodiment, the manner of the positioning sequence is expanded, ensuring the diversity of the positioning sequence.

[0080] A second aspect of the embodiments of the present disclosure provides a signal sending method, the method is performed by a first device, and the method includes:

[0081] sending a first signal to a terminal, the first signal including first information, the first information being used to indicate that the first signal is used for positioning the terminal.

[0082] In combination with some embodiments of the second aspect, in some embodiments, the first signal includes at least one of the following:

[0083] Second information for indicating a terminal identifier;

[0084] Fourth information for indicating a positioning sequence used for generating the second signal;

[0085] Fifth information for the terminal to amplify power of a third signal;

[0086] Sixth information for indicating a modulation mode when the second signal is generated and / or a chip length of the second signal;

[0087] Seventh information, the seventh information is used for indicating a frequency offset between the third signal and the second signal.

[0088] In some embodiments of the second aspect, in some embodiments, the positioning sequence includes any one of the following:

[0089] The positioning sequence is one, and one positioning sequence corresponds to one terminal; or

[0090] The positioning sequence is a plurality, and each positioning sequence in the plurality of positioning sequences corresponds to one terminal; or

[0091] The positioning sequence includes at least one positioning sequence group, one positioning sequence group corresponds to one terminal group, and the one terminal group includes a plurality of terminals.

[0092] The third aspect of the embodiments of the present disclosure provides a signal receiving method, the method is executed by a second device, and the method includes:

[0093] Receiving a second signal sent by a terminal, the second signal including a positioning sequence;

[0094] Obtaining a time point of receiving the second signal;

[0095] Sending the time point to a fourth device;

[0096] The fourth device is used for positioning the terminal based on the time point.

[0097] In some embodiments of the third aspect, in some embodiments, the second signal includes at least one of the following:

[0098] Second information, the second information is used for indicating a terminal identifier;

[0099] Third information, the third information is used for indicating a preamble positioning sequence.

[0100] The fourth aspect of the embodiments of the present disclosure provides a signal sending method, the method is executed by a third device, and the method includes:

[0101] Sending a third signal to a terminal, the third signal being used for the terminal to reflect to generate a second signal, the second signal including a positioning sequence.

[0102] In some embodiments of the third aspect, in some embodiments, the third signal is used for the terminal to modulate to generate a second signal, and the second signal includes a positioning sequence.

[0103] In some embodiments of the fourth aspect, in some embodiments, the second signal further includes at least one of the following:

[0104] The second information is used for indicating a terminal identifier.

[0105] The third information is used for indicating a preamble positioning sequence.

[0106] In a fifth aspect, the embodiments of the present disclosure provide a signal receiving method, the method is performed by a fourth device, and the method comprises the following steps.

[0107] receiving a time point sent by a second device, wherein the time point is a time point at which the second device receives a second signal sent by a terminal, and the second signal comprises a positioning sequence;

[0108] positioning the terminal based on the time point.

[0109] In combination with the fifth aspect, in some embodiments, the second signal further comprises at least one of the following:

[0110] The second information is used for indicating a terminal identifier.

[0111] The third information is used for indicating a preamble positioning sequence.

[0112] In a sixth aspect, the embodiments of the present disclosure provide a signal transceiving device, which comprises at least one of a transceiving module and a processing module; and the signal transceiving device is used for executing the optional implementation manner of the first aspect.

[0113] In a seventh aspect, the embodiments of the present disclosure provide a signal sending device, which comprises at least one of a transceiving module and a processing module; and the signal sending device is used for executing the optional implementation manner of the second aspect.

[0114] In an eighth aspect, the embodiments of the present disclosure provide a signal transceiving device, which comprises at least one of a transceiving module and a processing module; and the signal transceiving device is used for executing the optional implementation manner of the third aspect.

[0115] In a ninth aspect, the embodiments of the present disclosure provide a signal sending device, which comprises at least one of a transceiving module and a processing module; and the signal sending device is used for executing the optional implementation manner of the fourth aspect.

[0116] In a tenth aspect, the embodiments of the present disclosure provide a signal receiving device, which comprises at least one of a transceiving module and a processing module; and the signal receiving device is used for executing the optional implementation manner of the fifth aspect.

[0117] In an eleventh aspect, an embodiment of the present disclosure provides a terminal, comprising: one or more processors; wherein the terminal is configured to perform the method in any one of the first aspect.

[0118] In a twelfth aspect, an embodiment of the present disclosure provides a communication device, comprising: one or more processors; wherein the communication device is configured to perform the method in any one of the second aspect, the third aspect, the fourth aspect or the fifth aspect.

[0119] In a thirteenth aspect, an embodiment of the present disclosure provides a storage medium, which stores first information, when the first information is run on a communication device, causes the communication device to perform the method in any one of the first aspect, the second aspect, the third aspect, the fourth aspect or the fifth aspect.

[0120] In a fourteenth aspect, an embodiment of the present disclosure provides a program product, when the program product is executed by a communication device, causes the communication device to perform the method in any one of the first aspect, the second aspect, the third aspect, the fourth aspect or the fifth aspect.

[0121] In a fifteenth aspect, an embodiment of the present disclosure provides a computer program, when the computer program is run on a communication device, causes the communication device to perform the method in any one of the first aspect, the second aspect, the third aspect, the fourth aspect or the fifth aspect.

[0122] In a sixteenth aspect, an embodiment of the present disclosure provides a chip or a chip system. The chip or the chip system comprises processing circuitry configured to perform the method in any one of the first aspect, the second aspect, the third aspect, the fourth aspect or the fifth aspect.

[0123] It can be understood that the terminal, the storage medium, the program product, the computer program, the chip or the chip system are all used to perform the method proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding method, which will not be described here.

[0124] Embodiments of the present disclosure propose a signal transceiving method, apparatus and storage medium. In some embodiments, the signal transceiving method can be replaced by the terms such as signal sending and signal receiving method, signal communication method, signal processing method, and the signal transceiving apparatus can be replaced by the terms such as signal sending and signal receiving apparatus, signal communication apparatus, signal processing apparatus, and the information processing system, communication system and other terms can be replaced by each other.

[0125] The embodiments of the present disclosure are not exhaustive, but only illustrate some embodiments, and are not specific limitations on the protection scope of the present disclosure. In the case of no contradiction, each step in an embodiment can be implemented as an independent embodiment, and the steps can be combined arbitrarily, for example, the scheme after removing part of the steps in an embodiment can also be implemented as an independent embodiment, and the order of the steps in an embodiment can be exchanged arbitrarily, in addition, the optional implementation manners in an embodiment can be combined arbitrarily; in addition, the embodiments can be combined arbitrarily, for example, part or all steps of different embodiments can be combined arbitrarily, an embodiment can be combined with optional implementation manners of other embodiments arbitrarily.

[0126] In each embodiment of the present disclosure, the terms and / or descriptions between the embodiments are consistent if there is no special description and logical conflict, and can be referred to each other, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0127] The terms used in the embodiments of the present disclosure are only for the purpose of describing the specific embodiments, and not as a limitation on the present disclosure.

[0128] In the embodiments of the present disclosure, unless otherwise specified, the elements expressed in singular form, such as "one", "a", "the", "above", "said", "preceding", "this" and the like, can represent "one and only one", and can also represent "one or more", "at least one" and the like. For example, in the case of using articles such as "a", "an", "the" and the like in English, the noun after the article can be understood as singular expression, and can also be understood as plural expression.

[0129] In the embodiments of the present disclosure, "plurality" means two or more.

[0130] In some embodiments, the terms "at least one of", "one or more", "a plurality of", "multiple" and the like can be replaced with each other.

[0131] In some embodiments, the description of "at least one of A, B", "A and / or B", "in a case A, in another case B", "in response to a case A, in response to a case B", and the like, can include the following technical solutions according to the case: in some embodiments, A (A is executed regardless of B); in some embodiments, B (B is executed regardless of A); in some embodiments, A and B are selectively executed (A and B are selected from A and B); in some embodiments, A and B (A and B are executed). When there are more branches such as A, B, C, and the like, the above is similar.

[0132] In some embodiments, the description of "A or B" and the like can include the following technical solutions according to the case: in some embodiments, A (A is executed regardless of B); in some embodiments, B (B is executed regardless of A); in some embodiments, A and B are selectively executed (A and B are selected from A and B). When there are more branches such as A, B, C, and the like, the above is similar.

[0133] The prefix words "first", "second", and the like in the embodiments of the present disclosure are only used to distinguish different description objects, and do not constitute a limitation on the position, order, priority, quantity, or content of the description objects. The description of the description objects should refer to the description in the context of the claims or embodiments, and should not be limited by the prefix words. For example, the description object is "field", and the ordinal words before "field" in "first field" and "second field" do not limit the position or order between "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of "first field" and "second field". For another example, the description object is "level", and the ordinal words before "level" in "first level" and "second level" do not limit the priority between "levels". For another example, the quantity of the description object is not limited by the ordinal words, and can be one or more. For example, "first device", where the quantity of "device" can be one or more. In addition, the objects modified by different prefix words can be the same or different, for example, the description object is "device", and "first device" and "second device" can be the same device or different devices, and their types can be the same or different; for another example, the description object is "information", and "first information" and "second information" can be the same information or different information, and their contents can be the same or different.

[0134] In some embodiments, "including A", "containing A", "for indicating A", "carrying A" can be interpreted as directly carrying A, or indirectly indicating A.

[0135] In some embodiments, the terms "time / frequency", "time / frequency domain", and the like refer to the time domain and / or the frequency domain.

[0136] In some embodiments, the terms “in response to,” “in response to determining,” “in the event that,” “when,” “if,” “upon,” and the like can be replaced with each other.

[0137] 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,” “above,” and the like can be replaced with each other, and the terms “less than,” “less than or equal to,” “not greater than,” “fewer than,” “fewer than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” “below,” and the like can be replaced with each other.

[0138] In some embodiments, the apparatuses and devices can be interpreted as physical or virtual, and their names are not limited to the names described in the embodiments, and in some cases can also be understood as “equipment,” “device,” “circuit,” “network element,” “node,” “function,” “unit,” “section,” “system,” “network,” “chip,” “chip system,” “entity,” “subject,” and the like.

[0139] In some embodiments, “network” can be interpreted as an apparatus included in the network, such as an access network device, a core network device, and the like.

[0140] In some embodiments, an “access network device (AN device)” can also be referred to as a “radio access network device (RAN device),” a “base station (BS),” a “radio base station,” a “fixed station,” and in some embodiments can also be understood as a “node,” an “access point,” a “transmission point (TP),” a “reception point (RP),” a “transmission / reception point (TRP),” a “panel,” an “antenna panel,” an “antenna array,” a “cell,” a “macro cell,” a “small cell,” a “femto cell,” a “pico cell,” a “sector,” a “cell group,” a “serving cell,” a “carrier,” a “component carrier,” a “bandwidth part (BWP),” and the like.

[0141] In some embodiments, a "terminal" or "terminal device" can be referred to as a "user equipment," a "user terminal," a "mobile station," a "mobile terminal," a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, and / or the like.

[0142] In some embodiments, data, information, and / or the like can be obtained in compliance with laws and regulations of a country where the data, information, and / or the like is obtained.

[0143] In some embodiments, data, information, and / or the like can be obtained after obtaining consent of a user.

[0144] In addition, each element, each row, or each column in a table of embodiments of the present disclosure can be implemented as an independent embodiment, and a combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0145] FIG. 1 is an architecture schematic diagram of a communication system according to embodiments of the present disclosure, as shown in FIG. 1, the method provided by embodiments of the present disclosure can be applied to a communication system 100, which can include a terminal 101, a first device 102, a second device 103, a third device 104, and a fourth device 105. It should be noted that the communication system 100 can also include other devices, and the present disclosure does not limit the devices included in the communication system 100.

[0146] In some embodiments, the terminal 101 includes at least one of, but not limited to, an Internet of Things device, a mobile phone, a wearable device, a terminal, a car with communication function, a smart car, a Pad, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, a wireless terminal device in smart home, and the like.

[0147] Optionally, the terminal 101 is an Internet of Things device. For example, the Internet of Things device is an Ambient-IoT device. The Ambient-IoT device has lower complexity and cost than an NB-IoT (Narrow Band Internet of Things) terminal, and has lower maintenance cost. A main feature of the Ambient-IoT device is that it has no battery, is excited and powered by electromagnetic signals received thereby, or has a battery with a small amount of electrical storage function, but the battery does not need to be artificially charged, but can obtain battery energy from external energy, such as by obtaining external electromagnetic waves, thermal energy, kinetic energy, and the like.

[0148] In some embodiments, different Ambient IoT device types and their working modes are different, and their energy acquisition and storage capabilities are also different. Currently, the device type classification of the Ambient IoT device is as follows:

[0149] Optionally, terminal A: cannot independently generate / amplify signals, for example, uses a backscattering working mode.

[0150] Optionally, terminal B: has energy storage capability, cannot independently generate signals, for example, uses a backscattering working mode. The stored energy can be used for amplification of the reflected signal.

[0151] Optionally, terminal C: has energy storage capability, can independently generate signals, for example, has an active signal transmitting RF (Radio Frequency) module.

[0152] In some embodiments, the Ambient IoT device uses backscattering communication. Optionally, the backscattering communication is a modulation and transmission technology with extremely low power consumption designed by using the principle of radio frequency signal backscattering. The backscattering communication is that a radio frequency signal is received by a device, the internal circuit of the device modulates the information to be transmitted by means of load impedance modulation, etc. on the basis of the incident electromagnetic wave, and then sends out the modulated electromagnetic wave carrying information. The modulation information can be in various ways, such as ASK (Amplitude Shift Keying), FSK (Frequency-shift keying), PSK (Phase Shift Keying), etc.

[0153] Optionally, for the device using the backscattering mode, the general working process is as follows: the network sends a downlink instruction to the device, the device receives the downlink instruction, and sends a corresponding response to the network or performs a corresponding operation. However, the device needs to have a CW node to provide electromagnetic waves for reflection while transmitting data.

[0154] In some embodiments, for the device using the backscattering mode, the device needs to have a CW node to provide electromagnetic waves for reflection while transmitting data. The CW node can be a separate node or a base station / intermediate node (such as a UE) in communication with the device.

[0155] For the device using the backscattering mode, the general working process is as follows: the network sends a downlink instruction to the device, the device receives the downlink instruction, and sends a corresponding response to the network or performs a corresponding operation. However, the device needs to have a CW node to provide electromagnetic waves for reflection while transmitting data.

[0156] In some embodiments, the first device 102 in the embodiments of the present disclosure is configured to transmit a downlink signal. Optionally, the first device 102 is a DSN (Downlink Signal Node). Optionally, the first device 102 is a node or device that accesses a terminal to a wireless network, and the ground device 102 can include at least one of an evolved NodeB (eNB) in a 5G communication system, a next generation eNB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved node B (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an Open RAN, a Cloud RAN, a base station in other communication systems, an access node in a Wi-Fi system, but is not limited thereto.

[0157] In some embodiments, the third device 104 in the embodiments of the present disclosure is configured to transmit a CW, that is, the electromagnetic wave in the above-mentioned embodiments. Optionally, the third device 104 is a CWN (Continuous wave Node). Optionally, the third device 104 is at least one of a node or a device for accessing a terminal to a wireless network, and the ground device 102 can include at least one of an eNB (evolved NodeB) in a 5G communication system, an ng-eNB (next generation eNB), a gNB (next generation NodeB), a node B (NB), an HNB (home node B), an HeNB (home evolved nodeB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an Open RAN, a Cloud RAN, a base station in other communication systems, an access node in a Wi-Fi system, but is not limited thereto.

[0158] In some embodiments, the second device 103 in the embodiments of the present disclosure is configured to receive the signal transmitted by the terminal 101, so as to obtain the time point of receiving the signal transmitted by the terminal 101. Optionally, the second device 103 is a UR (Uplink receiver). Optionally, the second device 103 is at least one of an eNB (evolved NodeB) in a 5G communication system, an ng-eNB (next generation eNB) in a 5G communication system, a gNB (next generation NodeB) in a 5G communication system, a node B (NB), a HNB (home node B), an HeNB (home evolved nodeB), a wireless backhaul device, a RNC (radio network controller), a BSC (base station controller), a BTS (base transceiver station), a BBU (base band unit), a mobile switching center, a base station in a 6G communication system, an Open RAN, a Cloud RAN, a base station in other communication systems, an access node in a Wi-Fi system, and the like, but is not limited thereto.

[0159] In some embodiments, the embodiments of the present disclosure further include a fifth device 106 configured to provide energy for the terminal 101, so that the terminal 101 can transmit, receive or process data by using the energy provided by the fifth device 106.

[0160] It should be noted that the first device 102, the second device 103, the third device 104 and the fifth device 106 in the embodiments of the present disclosure can belong to the same device or belong to different devices, and the embodiments of the present disclosure do not limit this.

[0161] In some embodiments, the fourth device 105 in the embodiments of the present disclosure is configured to position the terminal 101. In the embodiments of the present disclosure, the fourth device 105 is a core network device. In some embodiments, the core network device can be one device including one or more network elements, or can be multiple devices or device groups each including all or part of the one or more network elements described above. The network element can be virtual or physical. The core network includes at least one of an evolved packet core (EPC), a 5G core network (5GCN), and a next generation core (NGC), for example.

[0162] Referring to FIG. 1, the communication system in the embodiments of the present disclosure includes four links, where link 1 refers to a link for data transmission between the first device 102 and the terminal 101, link 2 refers to a link for data transmission between the second device 103 and the terminal 101, link 3 refers to a link for data transmission between the third device 104 and the terminal 101, and link 4 refers to a link for providing energy to the terminal 101.

[0163] In some embodiments, the technical solutions of the present disclosure can be applied to an Open RAN architecture, at this time, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can become internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be realized by software or programs.

[0164] In some embodiments, the access network device can be composed of a central unit (CU) and a distributed unit (DU), where the CU can also be referred to as a control unit. The CU-DU structure can split the protocol layers of the access network device, and some of the protocol layers are controlled by the CU, and the remaining part or all of the protocol layers are distributed in the DU and controlled by the CU, but not limited thereto.

[0165] It can be understood that the communication system described in the embodiments of the present disclosure is for more clearly illustrating the technical solutions of the embodiments of the present disclosure, and does not constitute a limitation on the technical solutions proposed in the embodiments of the present disclosure. It can be understood by those skilled in the art that, as the system architecture evolves and new business scenarios appear, the technical solutions proposed in the embodiments of the present disclosure are also applicable to similar technical problems.

[0166] The following embodiments of the present disclosure can be applied to the communication system 100 shown in FIG. 1, or part of the subjects, but are not limited thereto. The subjects shown in FIG. 1 are illustrative, and the communication system can include all or part of the subjects in FIG. 1, or other subjects other than those in FIG. 1. The number and form of each subject is arbitrary, each subject can be physical or virtual, the connection relationship between each subject is illustrative, each subject can not be connected or can be connected, and the connection can be in any manner, can be direct connection or indirect connection, can be wired connection or wireless connection.

[0167] Embodiments of the present disclosure 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 (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (Bl tooth (registered trademark)), Public Land Mobile Network (PLMN) network, Device-to-Device (D2D) system, Machine to Machine (M2M) system, Internet of Things (IoT) system, Vehicle-to-Everything (V2X), system using other signal processing methods, next-generation system expanded based on them, and the like. In addition, a plurality of systems can be combined (for example, combination of LTE or LTE-A and 5G, and the like).

[0168] FIG. 2A is an interaction diagram of a signal transceiving method according to an embodiment of the present disclosure. As shown in FIG. 2A, the embodiment of the present disclosure relates to a signal processing method, and the method includes:

[0169] In step S2101, the first device transmits a first signal to the terminal.

[0170] In some embodiments, the first device or terminal is as shown in the above-mentioned Figure 1 embodiment, and the disclosure embodiments do not repeat the description here.

[0171] In some embodiments, the terminal receives the first signal sent by the first device.

[0172] In some embodiments, the first signal is not limited in name, which is, for example, a positioning signal, positioning signaling or other signals.

[0173] In some embodiments, the first signal includes first information. Optionally, the first information is used to indicate that the first signal is used for positioning the terminal, or it can also be understood that the first information is used to identify that the first signal is used for positioning the terminal. In some embodiments, positioning the terminal can be understood as obtaining the geographic position of the terminal, or it can also be understood as obtaining the current location of the terminal, and the disclosure embodiments do not limit this.

[0174] In some embodiments, the first signal includes at least one of the following:

[0175] (1) second information, the second information is used to indicate the terminal identifier.

[0176] In the disclosure embodiments, the terminal identifier is used to indicate the terminal.

[0177] In some embodiments, the first signal can include one or more second information, or it can also be understood that the first signal includes one or more terminal identifiers. For example, the first signal includes one or more groups of terminal identifiers, and the disclosure embodiments do not limit this.

[0178] It should be noted that if the first signal does not include the second information, it is by default to send the first signal to all terminals.

[0179] It should be noted that the disclosure embodiments are described by taking the second information included in the first signal as an example. In another embodiment, the second information can also be sent in advance, and the disclosure embodiments do not limit this.

[0180] (2) fourth information.

[0181] In some embodiments, the fourth information is used to indicate the positioning sequence used to generate the second signal. Or it can also be understood that the fourth information is used to indicate the positioning sequence transmitted by the terminal when backscattering. For example, the fourth information is identification information, and the identification information and the positioning sequence have a corresponding relationship. For example, identification information 1 corresponds to positioning sequence 1, identification information 2 corresponds to positioning sequence 2, and identification information 3 corresponds to positioning sequence 3. It should be noted that the above are examples of the fourth information, and the form of the fourth information is not limited by the disclosure embodiments.

[0182] It should be noted that the positioning sequence in the embodiments of the present disclosure has good correlation. For example, the autocorrelation of the positioning sequence is high or the cross-correlation is low.

[0183] Optionally, the positioning sequence includes any of the following cases:

[0184] 1) The positioning sequence is one, and one positioning sequence corresponds to one terminal.

[0185] In the embodiments of the present disclosure, if the first signal is sent to one terminal, one positioning sequence is included in the first signal, and the positioning sequence corresponds to the terminal.

[0186] In some embodiments, the fourth information indicates one positioning sequence, and the positioning sequence corresponds to one terminal.

[0187] Optionally, the positioning sequence corresponds to the terminal identifier of the terminal. Optionally, the sequence identifier of the positioning sequence corresponds to the terminal identifier.

[0188] 2) The positioning sequence is multiple, and each positioning sequence in the multiple positioning sequences corresponds to one terminal.

[0189] In the embodiments of the present disclosure, if the first signal is sent to multiple terminals, multiple positioning sequences can be included in the first signal, wherein each positioning sequence corresponds to one terminal, or it can also be understood that the positioning sequence and the terminal are in one-to-one correspondence.

[0190] In some embodiments, the fourth information indicates multiple positioning sequences, and the multiple positioning sequences correspond to multiple terminals. Optionally, each positioning sequence in the multiple positioning sequences corresponds to one terminal in the multiple terminals.

[0191] Optionally, the multiple positioning sequences correspond to the terminal identifiers of the multiple terminals. Optionally, each positioning sequence corresponds to the terminal identifier of the corresponding terminal. Optionally, the sequence identifiers of the multiple positioning sequences correspond to the terminal identifiers of the multiple terminals. Optionally, the sequence identifier of each positioning sequence corresponds to the terminal identifier of the corresponding terminal.

[0192] 3) The positioning sequence includes at least one positioning sequence group, one positioning sequence group corresponds to one terminal group, and one terminal group includes multiple terminals.

[0193] In the embodiments of the present disclosure, the first signal can include at least one positioning sequence group, one positioning sequence group corresponds to one terminal group, or it can also be said that one positioning sequence group corresponds to multiple terminals.

[0194] In some embodiments, the fourth information indicates at least one positioning sequence group, and each positioning sequence corresponds to one terminal group. Optionally, the sequence group identifier of the at least one positioning sequence group corresponds to the terminal group identifier of the terminal group.

[0195] In some embodiments, the terminal can randomly select one positioning sequence from the corresponding positioning sequence group when backscattering. Alternatively, the terminal can select the positioning sequence with the highest priority from the corresponding positioning sequence group when backscattering.

[0196] In some embodiments, each positioning sequence in the positioning sequence group corresponds to a terminal in the terminal group, and the terminal can determine the corresponding positioning sequence from the corresponding positioning sequence group when backscattering. Alternatively, the sequence identifier of each positioning sequence in the positioning sequence group corresponds to the identifier of a terminal in the terminal group.

[0197] It should be noted that if the fourth information is not included in the first signal, the terminal can backscatter according to the positioning sequence agreed by the communication protocol.

[0198] In some embodiments, the positioning sequence can be a ZC (Zadoff-Chu) sequence, a gold sequence, or other sequences, which are not limited in the embodiments of the present disclosure.

[0199] (3) The fifth information is used for the terminal to amplify the power of the third signal.

[0200] In some embodiments, the first distance and the power included in the fifth information are in a positive correlation. Alternatively, it can also be understood that the farther the distance between the terminal and the second device, the greater the power indicated by the fifth information.

[0201] (4) The sixth information is used to indicate the modulation mode when generating the second signal and / or the chip length of the second signal.

[0202] In some embodiments, the modulation mode includes any one of OOK (On-Off Keying) or BPSK (Binary Phase Shift Keying), or other modulation modes, which are not limited in the embodiments of the present disclosure.

[0203] In some embodiments, the chip length includes any one of the duration of an OOK symbol or the duration of a BPSK symbol, or other symbol durations, which are not limited in the embodiments of the present disclosure.

[0204] It should be noted that if the first signal does not include the sixth information, the modulation mode is agreed by the communication protocol, which is not limited in the embodiments of the present disclosure.

[0205] (5) The seventh information is used to indicate the frequency offset between the third signal and the second signal.

[0206] It should be noted that if the first signal does not include the seventh information, the frequency offset is agreed by the communication protocol, or no frequency offset is performed.

[0207] In step S2102, the third device sends a third signal to the terminal.

[0208] In some embodiments, the terminal receives the third signal sent by the third device.

[0209] In some embodiments, the third signal is used by the terminal to generate the second signal by backscattering, or alternatively, the third device sends the third signal to the terminal, and the terminal uses the third signal for backscattering.

[0210] In some embodiments, the third signal is a CW signal. Alternatively, the CW signal is a continuous electromagnetic wave, and the continuous electromagnetic wave has a certain amplitude.

[0211] It should be noted that the first device and the third device in the embodiments of the present disclosure can be the same or different devices. In some embodiments, the first device and the third device are the same device. Then the first signal and the third signal are sent by the same device. In some embodiments, the first device and the third device are different devices. Then the first signal and the third signal are sent by different devices.

[0212] It should be noted that the sending time of the first signal and the third signal can be continuous or have an interval, and the embodiments of the present disclosure do not limit this.

[0213] In step S2103, the terminal modulates the third signal to generate the second signal based on the information included in the first signal.

[0214] In some embodiments, the second signal includes a positioning sequence. Alternatively, the terminal modulates the third signal to the second signal including the positioning sequence based on the indication of the first signal.

[0215] In some embodiments, the second signal further includes at least one of the following:

[0216] (1) Second information, the second information is used to indicate the terminal identifier.

[0217] (2) Third information, the third information is used to indicate the preamble positioning sequence.

[0218] In some embodiments, the preamble sequence includes a synchronization sequence, which is used for the terminal to synchronize with other devices.

[0219] It should be noted that the second signal in the embodiments of the present disclosure can also include temperature information, humidity information and the like measured by the terminal, and the embodiments of the present disclosure do not limit this.

[0220] It should be noted that the embodiment of the present disclosure is illustrated by taking step S2103 as an example. In another embodiment, the terminal can also generate the second signal based on the first signal in other manners, which is not limited in the embodiment of the present disclosure.

[0221] In step S2104, the terminal sends the second signal to the second device.

[0222] In some embodiments, the terminal sends the second signal to a plurality of second devices. In some embodiments, each of the plurality of second devices receives the second signal sent by the terminal.

[0223] In the embodiment of the present disclosure, the terminal can send the generated second signal to the plurality of second devices respectively, and then each of the plurality of second devices can receive the second signal, and then the time of receiving the second signal is obtained through step S2104.

[0224] In step S2105, the second device obtains the time of receiving the second signal.

[0225] In some embodiments, the second device takes the time of receiving the positioning sequence included in the second signal as the time of receiving the second signal. Optionally, the time of receiving the second signal is determined according to the starting time or the ending time of the positioning sequence included in the second signal.

[0226] In step S2106, the second device sends the time of receiving the second signal of the second device to the fourth device.

[0227] In some embodiments, the fourth device receives the time of receiving the second signal of the second device sent by the second device.

[0228] In step S2107, the fourth device positions the terminal based on the times of receiving the second signal of the plurality of second devices.

[0229] In the embodiment of the present disclosure, the distances between each of the plurality of second devices and the terminal are different, so the distance difference between the second device and the terminal can be determined based on the difference of the times of receiving the second signal, and then the terminal is positioned based on the distance difference between the second device and the terminal.

[0230] In some embodiments, referring to FIG. 2B, a UR (Ubiquitous Reality) is taken as the second device, a terminal is taken as the terminal, a DSN (Distributed Service Network) is taken as the first device, and a CWN (Continuous Wave Network) is taken as the third device. The DSN sends the first signal, the CWN sends the third signal, the terminal modulates the third signal based on the first signal, and then sends the modulated third signal to the UR1, UR2 and UR3 by backscattering.

[0231] In some embodiments, for the positioning signal sent by the CWN / DSN, the device backscatters the received third signal after a certain time delay (Tgap). The Tgap refers to the time delay between the reception of the third signal by the device and the reflection of the third signal, which can include the device activation time delay, signal processing time delay, reception link radio frequency to baseband time delay, transmission link baseband to radio frequency time delay, and even network indicated scheduling time delay (i.e., according to the indication or protocol requirement of the network device, the device cannot immediately backscatter after receiving the third signal, but has to wait for a scheduling time delay before backscattering).

[0232] Since the positions of different URs are different from the device, there is a time difference between the reception of the backscattered second signal by each UR, which is equal to 0 or not equal to 0. The difference between the time when the UR1 receives the backscattered second signal and the time when the UR2 receives the backscattered second signal is T diff12 , the difference between the time when the UR2 receives the backscattered second signal and the time when the UR3 receives the backscattered second signal is T diff23 , and the difference between the time when the UR1 receives the backscattered second signal and the time when the UR3 receives the backscattered second signal is T diff13 .

[0233] The difference between the distance from the device to the UR1 and the distance from the device to the UR2 is c*T diff12 , the difference between the distance from the device to the UR2 and the distance from the device to the UR3 is c*T diff23 , and the difference between the distance from the device to the UR1 and the distance from the device to the UR3 is c*T diff13 , where c is the speed of light. That is, the device takes the UR1 and the UR2 as the foci, and the difference between the distance to the UR1 and the distance to the UR2 is c*T diff12on a single curve (if considering the positioning in vertical dimension, it is a single surface), meanwhile, the device is also focusing on UR2 and UR3, the distance difference between UR2 and UR3 is c*T diff23 on a single curve (if considering the positioning in vertical dimension, it is a single surface), meanwhile, the device is also focusing on UR1 and UR3, the distance difference between UR1 and UR3 is c*T diff13 on a single curve (if considering the positioning in vertical dimension, it is a single surface). The position of the device can be determined through the node of the at least two single curves determined above, and the position of the device can be determined through the intersection of the at least three single surfaces determined above.

[0234] In the above one-to-multiple positioning topology, the same second signal experiences different links to reach multiple URs. Since the links between the sending node of the positioning signal and the multiple receiving nodes of the positioning signal all experience the same CWN / DSN path to the device and the same Tgap period, the time difference of the positioning signal received by different URs can accurately reflect the distance difference between the device and each UR, so that the distance difference can be used for positioning.

[0235] The signal processing method related to the embodiments of the present disclosure can include at least one of steps S2101-S2107. For example, step S2101 can be implemented as an independent embodiment, step S2102 can be implemented as an independent embodiment, step S2103 can be implemented as an independent embodiment, step S2104 can be implemented as an independent embodiment, step S2105 can be implemented as an independent embodiment, step S2106 can be implemented as an independent embodiment, step S2107 can be implemented as an independent embodiment, and at least one of steps S2101-S2107 can be implemented as an independent embodiment, but not limited thereto.

[0236] In some embodiments, at least one of steps S2101-S2107 is optional, and one or more of these steps can be omitted or replaced in different embodiments.

[0237] In some embodiments, other optional implementations described before or after the corresponding description of FIG. 2A can be referred to.

[0238] In some embodiments, the names of information and the like are not limited to the names described in the embodiments, and the terms of "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codebook", "codeword", "codepoint", "bit", "data", "program", "chip", and the like can be replaced with each other.

[0239] In some embodiments, the terms of "uplink", "physical uplink", and the like can be replaced with each other, the terms of "downlink", "physical downlink", and the like can be replaced with each other, and the terms of "side", "sidelink", "sidelink communication", "direct", "direct link", "direct communication", and the like can be replaced with each other.

[0240] In some embodiments, the terms of "acquire", "obtain", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive", and the like can be replaced with each other, and can be interpreted as receiving from other subjects, acquiring from protocols, acquiring from higher layers, obtaining by self-processing, autonomously implementing, and the like.

[0241] In some embodiments, the terms of "send", "transmit", "report", "issue", "transmit", "bidirectional transmission", "send and / or receive", and the like can be replaced with each other.

[0242] In some embodiments, the terms of "time", "time point", "time", "time position", and the like can be replaced with each other, and the terms of "time length", "time period", "time window", "window", "time", and the like can be replaced with each other.

[0243] In some embodiments, the terms "certain", "preseted", "pre-set", "set", "indicated", "any", "first" and the like can be replaced with each other, "certain A", "preseted A", "pre-set A", "set A", "indicated A", "any A", "first A" can be interpreted as A predetermined in a protocol and the like, or can be interpreted as A obtained by setting, configuration, or indication and the like, or can be interpreted as certain A, any A, or first A, and the like, but are not limited thereto.

[0244] FIG. 3 is a flow diagram of a signal sending method according to an embodiment of the present disclosure, applied to a first device. As shown in FIG. 3, the present embodiment relates to a signal sending method, and the method comprises:

[0245] In step S3101, the first device sends a first signal to a terminal.

[0246] The optional implementation of step S3101 can refer to the optional implementation of step S2101 in FIG. 2A and other associated parts in the embodiments involved in FIG. 2A, which will not be repeated here.

[0247] FIG. 4 is a flow diagram of a signal sending method according to an embodiment of the present disclosure, applied to a third device. As shown in FIG. 4, the present embodiment relates to a signal sending method, and the method comprises:

[0248] In step S4101, the third device sends a third signal to a terminal.

[0249] The optional implementation of step S4101 can refer to step S2102 in FIG. 2A and other associated parts in the embodiments involved in FIG. 2A, which will not be repeated here.

[0250] FIG. 5A is a flow diagram of a signal sending method according to an embodiment of the present disclosure, applied to a terminal. As shown in FIG. 5A, the present embodiment relates to a signal sending method, and the method comprises:

[0251] In step S5101, the terminal generates a second signal based on the information included in the first signal and modulates the third signal.

[0252] The optional implementation of step S5101 can refer to step S2103 in FIG. 2A and other associated parts in the embodiments involved in FIG. 2A, which will not be repeated here.

[0253] In step S5102, the terminal sends the second signal to a second device.

[0254] The optional implementation of step S5102 can be referred to step S2104 in FIG. 2A and other associated parts in the embodiments related to FIG. 2A, which will not be repeated here.

[0255] The signal sending method related to the embodiments of the present disclosure can include at least one of steps S5101-S5102. For example, step S5101 can be implemented as an independent embodiment, and step S5102 can be implemented as an independent embodiment, but is not limited thereto.

[0256] FIG. 5B is a flow diagram of a signal transceiving method according to an embodiment of the present disclosure, applied to a terminal. As shown in FIG. 5B, the embodiments of the present disclosure relate to a signal transceiving method, and the method includes:

[0257] In step S5201, the terminal receives a first signal sent by a first device.

[0258] The optional implementation of step S5201 can be referred to step S2101 in FIG. 2A and other associated parts in the embodiments related to FIG. 2A, which will not be repeated here.

[0259] In step S5202, the terminal generates a second signal based on the first signal.

[0260] The optional implementation of step S5202 can be referred to step S2103 in FIG. 2A and other associated parts in the embodiments related to FIG. 2A, which will not be repeated here.

[0261] In step S5203, the terminal sends the second signal to a second device.

[0262] The optional implementation of step S5203 can be referred to step S2104 in FIG. 2A and other associated parts in the embodiments related to FIG. 2A, which will not be repeated here.

[0263] The signal transceiving method related to the embodiments of the present disclosure can include at least one of steps S5101-S5103. For example, step S5101 can be implemented as an independent embodiment, step S5102 can be implemented as an independent embodiment, and step S5103 can be implemented as an independent embodiment, but is not limited thereto.

[0264] FIG. 6 is a flow diagram of a signal transceiving method according to an embodiment of the present disclosure. As shown in FIG. 6, the embodiments of the present disclosure relate to a signal transceiving method, and the method includes:

[0265] In step S6101, the DSN / CWN sends a positioning signal.

[0266] In some embodiments, the positioning signal is composed of two parts in time domain: positioning instruction + CW.

[0267] The positioning instruction includes:

[0268] First information, used to identify the instruction as a trigger for positioning the device. The first information is mandatory;

[0269] Second information, used to indicate the information of the device to be positioned, which can indicate one device ID or multiple device IDs, or indicate the group ID of one or more groups of devices. The second information is optional. If there is no second information, it can be considered that the network side initiates positioning of all devices, and any device receiving the positioning instruction can backscatter the corresponding information. Note that the second information can also be sent in advance, for example, by first selecting a specific ID device through the select instruction, and then sending the positioning instruction containing the first information. In this case, the select instruction is equivalent to the second information here.

[0270] Fifth information, power amplification information, which is used to indicate the power amplification value of the device when backscattering. The fifth information is optional. When the network side estimates that the distance between the device and the UR is relatively close, a smaller power amplification value can be indicated, and when the network estimates that the distance between the device and the UR is relatively far, a larger power amplification value can be indicated. It is also possible that the device does not support flexible adjustment of the power amplification value, in which case the device can ignore the fifth information.

[0271] Fourth information, positioning sequence selection information, which is used to indicate the sequence information transmitted by the device when backscattering. The fourth information is optional. The sequence is used for UR reception detection and measurement of the reception time, and the sequence generally has good correlation (i.e., good autocorrelation and poor cross-correlation, so that the receiving end can receive the sequence information through correlation detection). One or more sequences can be indicated, or a certain group of sequences can be indicated. For example, when the device indicated in the second information is only one, one sequence can be indicated, when the device indicated in the second information is multiple, multiple sequences corresponding to multiple devices can be indicated, and when the device indicated in the second information is one group or multiple groups, a sequence group (or a sequence pool) can be indicated. Multiple or one group of devices can select a sequence from the sequence pool for carrying on the backscattered signal. When the number of devices involved is large, the fourth information can indicate a sequence pool containing a larger number of sequences to reduce the conflict when multiple devices select sequences. The fourth information can also not be indicated, and the device determines the positioning sequence according to the agreement of the protocol. The positioning sequence can be a ZC sequence, a gold sequence, etc.

[0272] Sixth information, backscatter modulation information, which can be used to indicate the modulation mode of backscatter, such as OOK / BPSK, etc., and can also be used to indicate the chip length of the backscatter physical layer signal (such as the duration of an OOK symbol / BPSK symbol). The sixth information is optional, and a fixed backscatter modulation information can also be directly defined by the protocol.

[0273] Seventh information, frequency offset information, indicating the offset of the center frequency domain of the backscatter signal from the center frequency of the CW. The sixth information is optional, and a fixed frequency offset can also be directly defined by the protocol, or no frequency offset is performed.

[0274] The CW is a continuous electromagnetic wave, generally having a constant amplitude, and the device receives the CW and modulates based on the CW to modulate the information to be transmitted onto the CW and backscatter it.

[0275] The positioning instruction + CW can be sent by one entity, such as when the DSN and the CWN are the same entity, which can send the positioning instruction + CW. The positioning instruction and the CW can be continuous in time, or there can be an interval. The positioning instruction + CW can also be sent by two entities respectively, such as when the DSN and the CWN are two different entities, the DSN sends the positioning instruction first, and then the CWN sends the CW. The positioning instruction and the CW can be continuous in time, or there can be an interval.

[0276] Step S6102, the device backscatters the positioning signal.

[0277] In some embodiments, the device determines the backscatter information to be sent by itself after receiving the positioning instruction, and starts backscattering after receiving the CW. The backscatter signal contains:

[0278] First part: positioning sequence. The positioning sequence is the sequence indicated by the fourth information described above. The first part is mandatory. The first sequence is modulated using the modulation mode indicated in the modulation mode (such as the sixth information) agreed by the protocol or configured by the network, transmitted according to the power information configured by the network (such as the power information indicated in the fifth information), and according to the frequency resource indicated by the network (such as the frequency offset indicated in the seventh information).

[0279] Second part: other information, such as device ID, or other information that needs to be reported by the device, etc. The second part is optional. For example, the device can report other information such as temperature, humidity, etc. measured by the device during the positioning process, avoiding the network from again issuing relevant instructions to require transmission and reducing the signaling interaction overhead with the network. The second part should be after the first part in time domain.

[0280] The third part: preamble sequence. From the perspective of enhancing the measurement accuracy of the reception time, the third part is generally optional. The preamble sequence is before the first part. The preamble sequence generally includes a synchronization sequence, which is used for the accurate synchronization of the receiving end and the device.

[0281] In step S6103, the UR measures the time t of receiving the positioning signal backscattered by the device.

[0282] The time of the UR receiving the positioning signal backscattered by the device can be defined as the starting time of the positioning sequence or the ending time of the positioning sequence in the positioning signal backscattered by the device.

[0283] In step S6104, the UR reports the reception time t to the network processing node.

[0284] In the embodiments of the present disclosure, part or all of the steps, and optional implementation manners thereof, can be combined with part or all of the steps in other embodiments, or can be combined with optional implementation manners of other embodiments.

[0285] The embodiments of the present disclosure also propose a device for implementing any of the above methods, for example, a device including units or modules for implementing each step performed by the terminal in any of the above methods. For another example, another device is also proposed, including units or modules for implementing each step performed by the network equipment (such as access network equipment, core network function node, core network equipment, etc.) in any of the above methods.

[0286] It should be understood that the division of each unit or module in the above apparatus is only a logical function division, and all or part of them can be integrated into a physical entity or physically separated in actual implementation. In addition, the units or modules in the apparatus can be implemented in the form of processor calling software: for example, the apparatus includes a processor, the processor is connected with a memory, the memory stores instructions, and the processor calls the instructions stored in the memory to realize any of the above methods or realize the functions of each unit or module of the above apparatus, wherein the processor is a general processor such as a central processing unit (CPU) or a microprocessor, and the memory is a memory in the apparatus or a memory outside the apparatus. Alternatively, the units or modules in the apparatus can be implemented in the form of hardware circuit, and the functions of part or all of the units or modules can be realized by the design of hardware circuit. The above hardware circuit can be understood as one or more processors; for example, in one implementation, the above hardware circuit is an application-specific integrated circuit (ASIC), and the functions of part or all of the units or modules are realized by the design of the logical relationship of elements in the circuit; for another example, in another implementation, the above hardware circuit is a programmable logic device (PLD), and a field programmable gate array (FPGA) is taken as an example, which can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by a configuration file, so as to realize the functions of part or all of the above units or modules. All units or modules of the above apparatus can be all implemented in the form of processor calling software, or all implemented in the form of hardware circuit, or part implemented in the form of processor calling software and the remaining part implemented in the form of hardware circuit.

[0287] In embodiments of the present disclosure, the processor is a circuit with signal processing capability. In one implementation, the processor can be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), a digital signal processor (DSP), or the like. In another implementation, the processor can implement certain functions through a logical relationship of hardware circuit, and the logical relationship of the hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In the reconfigurable hardware circuit, the processor loads a configuration document to implement the configuration of the hardware circuit. It can be understood that the processor loads instructions to implement the functions of the above part or all units or modules. In addition, 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), a deep learning processing unit (DPU), or the like.

[0288] FIG. 7A is a structural schematic diagram of a signal transceiver device according to an embodiment of the present disclosure. As shown in FIG. 7A, the signal transceiver device 7100 can include at least one of a transceiver module 7101, a processing module 7102, and the like. In some embodiments, the transceiver module 7101 is configured to receive a first signal transmitted by a first device, the first signal including first information, the first information being used to indicate that the first signal is used for positioning the device; the processing module 7102 is configured to generate a second signal based on backscattering of the first signal; the transceiver module 7101 is configured to transmit the second signal to a second device, the second signal including a positioning sequence; and receive a third signal transmitted by a third device, the third signal being used for the device to generate the second signal by backscattering. Optionally, the transceiver module 7101 is configured to perform at least one of the communication steps (such as step S2101 but not limited thereto) of transmitting and / or receiving performed by the terminal in any of the above methods, and details are not described herein. Optionally, the processing module is configured to perform at least one of the other steps performed by the terminal in any of the above methods, and details are not described herein.

[0289] Optionally, the processing module 7102 is configured to perform at least one of the processing and / or communication steps performed by the terminal in any of the above methods, details of which are not repeated here.

[0290] Fig. 7B is a structural schematic diagram of a signal sending apparatus according to an embodiment of the present disclosure. As shown in Fig. 7B, the signal sending apparatus 7200 can include at least one of a transceiver module 7201, a processing module 7202, etc. In some embodiments, the transceiver module 7201 is configured to send a first signal to a terminal, the first signal including first information, the first information being used to indicate that the first signal is used for positioning the terminal. Optionally, the transceiver module 7201 is configured to perform at least one of the sending and / or receiving and / or other communication steps performed by the communication device in any of the above methods, details of which are not repeated here. Optionally, the processing module is configured to perform at least one of the other steps performed by the communication device in any of the above methods, details of which are not repeated here.

[0291] Optionally, the processing module 7202 is configured to perform at least one of the processing and / or communication steps performed by the communication device in any of the above methods, details of which are not repeated here.

[0292] Fig. 7C is a structural schematic diagram of a signal receiving apparatus according to an embodiment of the present disclosure. As shown in Fig. 7C, the signal receiving apparatus 7300 can include at least one of a transceiver module 7301, a processing module 7302, etc. In some embodiments, the transceiver module 7301 is configured to receive a second signal sent by a terminal, the second signal including a positioning sequence; the processing module 7302 is configured to obtain a time point at which the second signal is received; and the transceiver module 7301 is configured to send the time point to a fourth device, the fourth device being configured to position the terminal based on the time point. Optionally, the transceiver module 7301 is configured to perform at least one of the sending and / or receiving and / or other communication steps performed by the communication device in any of the above methods, details of which are not repeated here. Optionally, the processing module is configured to perform at least one of the other steps performed by the communication device in any of the above methods, details of which are not repeated here.

[0293] Optionally, the processing module 7302 is configured to perform at least one of the processing and / or communication steps performed by the communication device in any of the above methods, details of which are not repeated here.

[0294] FIG. 7D is a structural schematic diagram of a signal sending apparatus according to the embodiments of the present disclosure. As shown in FIG. 7D, the signal sending apparatus 7400 can include at least one of a transceiver module 7401, a processing module 7402, etc. In some embodiments, the transceiver module 7401 is configured to send a third signal to a terminal, where the third signal is used for the terminal to reflect a second signal, and the second signal includes a positioning sequence. Optionally, the transceiver module 7401 described above is configured to perform at least one of the communication steps, such as sending and / or receiving, performed by the communication device in any of the methods described above, which will not be repeated here. Optionally, the processing module described above is configured to perform at least one of the other steps performed by the communication device in any of the methods described above, which will not be repeated here.

[0295] Optionally, the processing module 7402 is configured to perform at least one of the communication steps, such as processing, performed by the communication device in any of the methods described above, which will not be repeated here.

[0296] FIG. 7E is a structural schematic diagram of a signal receiving apparatus according to the embodiments of the present disclosure. As shown in FIG. 7E, the signal receiving apparatus 7500 can include at least one of a transceiver module 7501, a processing module 7502, etc. In some embodiments, the transceiver module 7501 is configured to receive a time point sent by a second device, where the time point refers to a time point at which the second device receives a second signal sent by a terminal, and the second signal includes a positioning sequence; and the processing module 7502 is configured to position the terminal based on the time point. Optionally, the transceiver module 7501 described above is configured to perform at least one of the communication steps, such as sending and / or receiving, performed by the communication device in any of the methods described above, which will not be repeated here. Optionally, the processing module described above is configured to perform at least one of the other steps performed by the communication device in any of the methods described above, which will not be repeated here.

[0297] Optionally, the processing module 7502 is configured to perform at least one of the communication steps, such as processing, performed by the communication device in any of the methods described above, which will not be repeated here.

[0298] In some embodiments, the transceiver module can include a sending module and / or a receiving module, which can be separate or integrated together. Optionally, the transceiver module can be mutually replaced with a transceiver.

[0299] In some embodiments, the processing module can be one module, or can include multiple sub-modules. Optionally, the multiple sub-modules perform all or part of the steps required to be performed by the processing module. Optionally, the processing module can be mutually replaced with a processor.

[0300] FIG. 8A is a structural schematic diagram of a communication device 8100 according to an embodiment of the present disclosure. The communication device 8100 can be a network device (for example, an access network device, a core network device, etc.), a terminal, a first device, a second device, a third device, or a fourth device, a chip, a chip system, or a processor supporting the network device to implement any of the above methods, or a chip, a chip system, or a processor supporting the terminal to implement any of the above methods. The communication device 8100 can be used to implement the methods described in the above method embodiments, and details can be referred to the descriptions in the above method embodiments.

[0301] As shown in FIG. 8A, the communication device 8100 includes one or more processors 8101. The processor 8101 can be a general processor or a special-purpose processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control a signal processing apparatus (for example, a base station, a baseband chip, a terminal, a terminal chip, a DU, or a CU), execute a program, and process data of the program. The communication device 8100 is configured to execute any of the above methods.

[0302] In some embodiments, the communication device 8100 further includes one or more memories 8102 configured to store instructions. Alternatively, all or part of the memory 8102 can be located outside the communication device 8100.

[0303] 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 transceiver 8103 performs at least one of the communication steps (for example, steps S2101, S2102, S2103, and S2104, but not limited to) in the above methods, such as transmitting and / or receiving.

[0304] In some embodiments, the transceiver can include a receiver and / or a transmitter, which can be separate or integrated together. Alternatively, the terms of transceiver, transceiving unit, transceiver, transceiving circuit, etc. can be replaced by each other, the terms of transmitter, transmitting unit, transmitter, transmitting circuit, etc. can be replaced by each other, and the terms of receiver, receiving unit, receiver, receiving circuit, etc. can be replaced by each other.

[0305] In some embodiments, the communication device 8100 can include one or more interface circuits 8104. Alternatively, the interface circuit 8104 is connected with 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 the instructions stored in the memory 8102 and send the instructions to the processor 8101.

[0306] The communication device 8100 described in the above embodiments can be a network device or a terminal, but the scope of the communication device 8100 described in the present disclosure is not limited thereto, and the structure of the communication device 8100 can not be limited by FIG. 8A. The communication device can be a standalone device or can be part of a larger device. For example, the communication device can be: 1) a standalone integrated circuit (IC), or a chip, or a chip system or subsystem; (2) a set of one or more ICs, which can optionally also include storage components for storing data, programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal, a smart terminal, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, and the like; (6) and the like.

[0307] FIG. 8B is a structural schematic diagram of a chip 8200 according to an embodiment of the present disclosure. For the case where the communication device 8100 is a chip or a chip system, the structural schematic diagram of the chip 8200 shown in FIG. 8B can be referred to, but is not limited thereto.

[0308] The chip 8200 includes one or more processors 8201, and the chip 8200 is configured to execute any of the above methods.

[0309] In some embodiments, the chip 8200 further includes one or more interface circuits 8202. Optionally, the interface circuit 8202 is connected to the memory 8203, and the interface circuit 8202 can be configured to receive signals from the memory 8203 or other devices, and the interface circuit 8202 can be configured to send signals to the memory 8203 or other devices. For example, the interface circuit 8202 can read instructions stored in the memory 8203 and send the instructions to the processor 8201.

[0310] In some embodiments, the interface circuit 8202 performs at least one of the communication steps such as sending and / or receiving in the above methods, and the processor 8201 performs at least one of the other steps.

[0311] In some embodiments, the terms interface circuit, interface, transceiver pin, transceiver, and the like can be replaced with each other.

[0312] In some embodiments, the chip 8200 further includes one or more memories 8203 for storing instructions. Optionally, all or part of the memory 8203 can be outside the chip 8200.

[0313] The disclosure further provides a storage medium having stored instructions which, when executed on the 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 is not limited to this, and can also be a storage medium readable by other devices. Optionally, the storage medium can be a non-transitory storage medium, but is not limited to this, and can also be a transitory storage medium.

[0314] The disclosure further provides a program product which, 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.

[0315] The disclosure further provides a computer program which, when executed on a computer, causes the computer to perform any of the above methods.

Claims

1. A signal transceiving method, characterized by, The method is executed by a terminal, and the method comprises: receiving a first signal sent by a first device, the first signal comprising first information, the first information being used to indicate that the first signal is used for positioning the terminal; generating a second signal based on the first signal by backscattering; sending the second signal to a second device, the second signal comprising a positioning sequence; receiving a third signal sent by a third device, the third signal being used for the terminal to generate the second signal by backscattering.

2. The method of claim 1, wherein, The second signal is generated based on the first signal, comprising: modulating the third signal based on the information comprised in the first signal to generate the second signal.

3. The method according to claim 1 or 2, characterized in that, The second signal further comprises at least one of: second information, the second information being used to indicate a terminal identifier; third information, the third information being used to indicate a preamble positioning sequence.

4. The method according to any one of claims 1 to 3, characterized in that, The first signal can further comprise at least one of: second information, the second information being used to indicate a terminal identifier; fourth information, the fourth information being used to indicate a positioning sequence used for generating the second signal; fifth information, the fifth information being used for the terminal to amplify the power of the third signal; sixth information, the sixth information being used to indicate a modulation mode when generating the second signal and / or a chip length of the second signal; seventh information, the seventh information being used to indicate a frequency offset between the third signal and the second signal.

5. The method according to any one of claims 1 to 4, wherein: the positioning sequence is one, one positioning sequence corresponding to the terminal; or the positioning sequence is a plurality of positioning sequences, each of the plurality of positioning sequences corresponding to one terminal; or the positioning sequence comprises at least one positioning sequence group, one positioning sequence group corresponding to one terminal group, the one terminal group comprising a plurality of terminals.

6. A signal transmission method characterized by comprising: The method is executed by a first device, and the method comprises: sending a first signal to a terminal, the first signal comprising first information, the first information being used to indicate that the first signal is used for positioning the terminal.

7. The method of claim 6, wherein, The first signal comprises at least one of: second information, the second information being used to indicate a terminal identifier; fourth information, the fourth information being used to indicate a positioning sequence used for generating the second signal; fifth information, the fifth information being used for the terminal to amplify the power of the third signal; sixth information, the sixth information being used to indicate a modulation mode when generating the second signal and / or a chip length of the second signal; seventh information, the seventh information being used to indicate a frequency offset between the third signal and the second signal.

8. The method of claim 7, wherein, The positioning sequence comprises any one of: the positioning sequence is one, one positioning sequence corresponding to the terminal; or the positioning sequence is a plurality of positioning sequences, each of the plurality of positioning sequences corresponding to one terminal; or the positioning sequence comprises at least one positioning sequence group, one positioning sequence group corresponding to one terminal group, the one terminal group comprising a plurality of terminals.

9. A signal transceiving method, characterized by, The method is executed by a second device, and the method comprises: receiving a second signal sent by a terminal, the second signal comprising a positioning sequence; acquiring a time point at which the second signal is received; sending the time point to a fourth device; wherein the fourth device is configured to locate the terminal based on the time point.

10. The method of claim 9, wherein, The second signal further comprises at least one of: second information, the second information being used to indicate a terminal identity; third information, the third information being used to indicate a preamble locating sequence.

11. A signal transmission method characterized by comprising: The method is performed by a third device, and the method comprises: sending, to a terminal, a third signal, the third signal being used by the terminal to reflectively generate a second signal, the second signal comprising a locating sequence.

12. The method of claim 11, wherein, The second signal further comprises at least one of: second information, the second information being used to indicate a terminal identity; third information, the third information being used to indicate a preamble locating sequence.

13. A signal receiving method characterized by comprising: The method is performed by a fourth device, and the method comprises: receiving a time point sent by a second device, wherein the time point refers to a time point at which the second device receives a second signal sent by a terminal, the second signal comprising a locating sequence; locating the terminal based on the time point.

14. The method of claim 13, wherein, The second signal further comprises at least one of: second information, the second information being used to indicate a terminal identity; third information, the third information being used to indicate a preamble locating sequence.

15. A signal transceiving apparatus, characterized by comprising: The apparatus comprises: a transceiver module, configured to receive a first signal sent by a first device, the first signal comprising first information, the first information being used to indicate that the first signal is used for locating the apparatus; a processing module, configured to generate a second signal based on the first signal; the transceiver module is further configured to send the second signal to a second device, the second signal comprising a locating sequence, and to receive a third signal sent by a third device, the third signal being used by the apparatus to perform backscattering to generate the second signal.

16. A signal sending apparatus, characterized by comprising: The apparatus comprises: a transceiver module, configured to send a first signal to a terminal, the first signal comprising first information, the first information being used to indicate that the first signal is used for locating the terminal.

17. A signal transceiving apparatus, characterized by comprising: The apparatus comprises: a transceiver module, configured to receive a second signal sent by a terminal, the second signal comprising a locating sequence; a processing module, configured to obtain a time point at which the second signal is received; the transceiver module is further configured to send the time point to a fourth device; wherein the fourth device is configured to locate the terminal based on the time point.

18. A signal sending apparatus, characterized by comprising: The apparatus comprises: a transceiver module, configured to send a third signal to a terminal, the third signal being used by the terminal to reflectively generate a second signal, the second signal comprising a locating sequence.

19. A signal receiving apparatus characterized by comprising: The apparatus comprises: a transceiver module, configured to receive a time point sent by a second device, wherein the time point refers to a time point at which the second device receives a second signal sent by a terminal, the second signal comprising a locating sequence; a processing module, configured to locate the terminal based on the time point.

20. A terminal, characterized by The terminal comprises: one or more processors; wherein the processors are configured to perform the signal transceiving method in any one of claims 1 to 5.

21. A communications device, characterized by comprise: one or more processors; wherein the processors are configured to perform the signal sending method in any one of claims 6 to 8.

22. A communications device, characterized by comprise: one or more processors; wherein the processors are configured to perform the signal transceiving method in any one of claims 9 to 10.

23. A communications device, characterized by comprise: one or more processors; wherein the processor is configured to perform the signal sending method of any one of claims 11-12.

24. A communications device, characterized by comprising: one or more processors; wherein the processor is configured to perform the signal receiving method of any one of claims 13-14.

25. A communication system, characterized by The communication system comprises a terminal, a first device, a second device and a third device; wherein the terminal is configured to perform the signal sending and signal receiving method of any one of claims 1-5, the first device is configured to perform the signal sending method of any one of claims 6-8, the second device is configured to perform the signal sending and signal receiving method of any one of claims 9-10, and the third device is configured to perform the signal sending method of any one of claims 11-12.

26. The method of claim 24, wherein, The communication system further comprises a fourth device, wherein the fourth device is configured to perform the signal receiving method of any one of claims 13-14.

27. A storage medium, characterized by The storage medium has stored instructions which, when executed on a communication device, cause the communication device to perform the method of any one of claims 1-14.

28. A program product, characterized by The program product, when executed by a communication device, causes the communication device to perform the method of any one of claims 1-14.

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