Signal transmission method and apparatus, device, system and storage medium

Abstract

The present application relates to the technical field of communications, and discloses a signal transmission method and apparatus, a device, a system and a storage medium. The signal transmission method of embodiments of the present application comprises: a terminal receives first information from a network side device, the first information comprising first indication information and a first mapping mode, the first indication information being used for indicating information carried by a first waveform, and the first mapping mode being a mapping mode of the first waveform and a second waveform; and on the basis of the first information, the terminal detects a first signal, the first signal being a signal transmitted on the basis of the first waveform and the second waveform, wherein the first waveform at least comprises an OFDM waveform, and the second waveform at least comprises at least one of the following: an OOK waveform and an FSK waveform.

Description

Signal transmission method, device, equipment, system and storage medium

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application number 202310948229.7 filed on July 28, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to a signal transmission method, device, equipment, system and storage medium. Background Art

[0004] For the detection of low-power signals, there are terminals capable of demodulating different signal waveforms, for example, terminals capable of demodulating On-Off Keying (OOK) signals, terminals capable of demodulating Frequency-Shift Keying (FSK) signals, and terminals capable of demodulating Orthogonal Frequency Division Multiplexing (OFDM) signals.

[0005] One waveform generation method for OOK and FSK signals uses an OFDM sequence to generate the characteristic information of the OOK or FSK signal. For example, the on / off state of an OOK signal is represented by different amplitudes, so a constant-amplitude OFDM sequence can be used to generate the on portion of the OOK signal, while the off portion corresponds to no signal transmission. Similarly, FSK signals carry information by transmitting signals at different frequencies. Therefore, a constant-amplitude OFDM sequence can be transmitted at corresponding frequencies while no signal is transmitted at other frequencies. A terminal demodulating an OOK signal can only demodulate the on / off information but not the OFDM sequence that generates the OOK signal. Similarly, a terminal demodulating an FSK signal can only demodulate the frequency information but not the OFDM sequence that generates the FSK signal. However, a terminal demodulating an OFDM signal can demodulate the OFDM sequence in addition to the amplitude and frequency information.

[0006] However, when there are terminals in the cell that are capable of demodulating different signal waveforms, low-power signals can be transmitted using superimposed waveforms. However, there is currently no solution for how the OFDM sequence that generates the characteristic information of the OOK signal or FSK signal in the superimposed waveform carries information, and how the OFDM sequence is mapped to the characteristic information of the OOK signal or FSK signal. As a result, the terminal cannot determine all the information carried by the superimposed waveform, the complexity of the terminal detecting low-power signals increases, and the reliability of detecting low-power signals is poor.

[0007] Summary of the Invention

[0008] The embodiments of the present application provide a signal transmission method, apparatus, device, system and storage medium, which can solve the problem that the terminal cannot determine all the information carried by the superimposed waveform, the complexity of the terminal detecting low-power signals increases, and the reliability of detecting low-power signals is poor.

[0009] In a first aspect, a signal transmission method is provided, the method comprising: a terminal receiving first information from a network side device, the first information comprising first indication information and a first mapping method, the first indication information being used to indicate information carried by a first waveform, the first mapping method being a mapping method of a first waveform and a second waveform; the terminal detecting a first signal based on the first information, the first signal being a signal transmitted based on the first waveform and the second waveform; wherein the first waveform comprises at least an OFDM waveform, and the second waveform comprises at least one of the following: an OOK waveform and an FSK waveform.

[0010] In a second aspect, a signal transmission method is provided, which includes: a network side device sends first information to a terminal, the first information including first indication information and a first mapping method, the first indication information is used to indicate information carried by a first waveform, and the first mapping method is a mapping method of a first waveform and a second waveform; wherein the first information is used by the terminal to detect a first signal, and the first signal is a signal transmitted based on the first waveform and the second waveform; the first waveform includes at least an OFDM waveform, and the second waveform includes at least one of the following: an OOK waveform and an FSK waveform.

[0011] In a third aspect, a signal transmission device is provided, comprising: a receiving module and a detection module. The receiving module is configured to receive first information from a network-side device, the first information comprising first indication information and a first mapping method, the first indication information being used to indicate information carried by a first waveform, and the first mapping method being a mapping method of a first waveform and a second waveform. The detection module is configured to detect a first signal based on the first information received by the receiving module, the first signal being a signal transmitted based on the first waveform and the second waveform. The first waveform comprises at least an OFDM waveform, and the second waveform comprises at least one of the following: an OOK waveform and an FSK waveform.

[0012] In a fourth aspect, a signal transmission device is provided, comprising: a sending module. The sending module is configured to send first information to a terminal, the first information comprising first indication information and a first mapping mode, the first indication information being used to indicate information carried by a first waveform, the first mapping mode being a mapping mode between the first waveform and the second waveform; wherein the first information is used by the terminal to detect a first signal, the first signal being a signal transmitted based on the first waveform and the second waveform; the first waveform comprising at least an OFDM waveform, and the second waveform comprising at least one of the following: an OOK waveform and an FSK waveform.

[0013] In a fifth aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0014] In a sixth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the communication interface is used to receive first information from a network-side device, the first information comprising first indication information and a first mapping method, the first indication information being used to indicate information carried by a first waveform, and the first mapping method being a mapping method of a first waveform and a second waveform. The processor is used to detect a first signal based on the first information received by a receiving module, the first signal being a signal transmitted based on the first waveform and the second waveform. The first waveform comprises at least an OFDM waveform, and the second waveform comprises at least one of the following: an OOK waveform and an FSK waveform.

[0015] In the seventh aspect, a network side device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.

[0016] In the eighth aspect, a network side device is provided, including a processor and a communication interface, wherein the communication interface is used to send first information to a terminal, the first information including first indication information and a first mapping method, the first indication information is used to indicate information carried by the first waveform, and the first mapping method is a mapping method of the first waveform and the second waveform; wherein the first information is used by the terminal to detect a first signal, and the first signal is a signal transmitted based on the first waveform and the second waveform; the first waveform includes at least an OFDM waveform, and the second waveform includes at least one of the following: an OOK waveform and an FSK waveform.

[0017] In the ninth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0018] In the tenth aspect, a wireless communication system is provided, comprising: a terminal and a network side device, wherein the terminal can be used to execute the steps of the method described in the first aspect, and the network side device can be used to execute the steps of the method described in the second aspect.

[0019] In the eleventh aspect, a chip is provided, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the method as described in the first aspect, or to implement the method as described in the second aspect.

[0020] In the twelfth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the signal transmission method as described in the first aspect, or to implement the steps of the signal transmission method as described in the second aspect.

[0021] In an embodiment of the present application, the terminal can receive the first information of the first signal from the network side, and detect the first signal transmitted based on the first waveform and the second waveform based on the first information, that is, the information carried by the first waveform and the mapping method of the first waveform and the second waveform. That is, in this scheme, the information carried by the first waveform is indicated to the terminal through the first indication information, and the mapping method of the information carried by the first waveform and the superimposed waveform (including the first waveform and the second waveform) is determined. The mapping method of the information carried by the first waveform and the information carried by the second waveform can be determined, that is, the mapping method of the characteristic information of the OFDM sequence and the OOK signal or the FSK signal is obtained to obtain the information carried by the second waveform, so that the terminal can accurately detect the low-power signal based on the first waveform and the second waveform, thereby obtaining the information carried by the first waveform and the second waveform, that is, all the information carried by the superimposed waveform, and reducing the complexity of detecting the low-power signal and improving the reliability of detecting the low-power signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is a schematic diagram of the architecture of a wireless communication system provided in an embodiment of the present application;

[0023] FIG2 is a schematic diagram of the working principle of a low-power terminal provided by the related art;

[0024] FIG3 is a schematic diagram of an OOK signal waveform and an FSK signal waveform provided by the related art;

[0025] FIG4 is a schematic diagram of a superimposed waveform of an OOK signal and an FSK signal provided by the related art;

[0026] FIG5 is a schematic diagram of a signal transmission method according to an embodiment of the present application;

[0027] FIG6 is a schematic diagram of an example of a subset partitioning method provided in an embodiment of the present application;

[0028] FIG7 is a second example schematic diagram of a subset partitioning method provided in an embodiment of the present application;

[0029] FIG8 is a second schematic diagram of a signal transmission method provided in an embodiment of the present application;

[0030] FIG9 is a schematic diagram of a structure of a signal transmission device according to an embodiment of the present application;

[0031] FIG10 is a second structural diagram of a signal transmission device provided in an embodiment of the present application;

[0032] FIG11 is a schematic diagram of the hardware structure of a communication device provided in an embodiment of the present application;

[0033] FIG12 is a schematic diagram of the hardware structure of a terminal provided in an embodiment of the present application;

[0034] FIG13 is a schematic diagram of the hardware structure of a network-side device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0035] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0036] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "or" in this application represents at least one of the connected objects. For example, "A or B" covers three options, namely, Option 1: including A but not including B; Option 2: including B but not including A; Option 3: including both A and B. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0037] The terms "at least one" and "at least one of" in the specification and claims of this application refer to any one, any two, or a combination of more than two of the objects included. For example, at least one of a, b, and c can be represented by: "a", "b", "c", "a and b", "a and c", "b and c", and "a, b, and c", where a, b, and c can be single or multiple. Similarly, "at least two" means two or more, and its meaning is similar to "at least one".

[0038] The term "indication" in this application can be either a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, the operation to be performed, or the requested result, etc. in the instruction sent; an indirect indication can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the operation to be performed or the requested result, etc. based on the judgment result.

[0039] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) systems. th Generation, 6G) communication system.

[0040] FIG1 is a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device (Wearable Device), an aircraft (Flight Vehicle), a vehicle-mounted device (VUE), a ship-mounted device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), a game console, a personal computer (PC), an ATM, or a self-service machine, or other terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be called a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (WLAN) access point (AS) or a wireless fidelity (WiFi) node, etc.Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home evolved Node B (home evolved Node B), Transmission Reception Point (TRP) or other appropriate terms in the relevant field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0041] The following explains some concepts and / or terms involved in a signal transmission method, apparatus, device, system and storage medium provided in the embodiments of the present application.

[0042] 1. Low-power terminals

[0043] A low-power (LP) wake-up receiver (WUR) / (Wake-Up Signal, WUS) is introduced in the mobile cellular system. The working principle of the LP WUR is that the receiving end includes a first module and a second module. The first module is the main communication module, which is used to receive and send communication data transmitted by the sending end. The second module is a low-power module, which is used to receive the low-power wake-up signal and low-power beacon signal / hold signal sent by the sending end. The low-power wake-up signal is used to wake up the main communication module of the receiving end. The low-power beacon signal / hold signal is used to provide time reference information and other information for receiving the low-power wake-up signal, and can also provide wake-up link channel quality measurement. As shown in Figure 2, when the first module is not awakened by the second module, it is always in the off state and does not send or receive data. When downlink data arrives, the second module detects the wake-up signal sent by the sending end, and the wake-up signal contains the terminal information. Then, the second module triggers the first module to switch from the off state to the working state to receive and send data. The second module can be turned on continuously or discontinuously. When the second module is turned on, it can receive low-power wake-up signals and low-power beacon signals.

[0044] The low-power wake-up signal can be modulated using OOK, so that the wake-up module can detect the wake-up signal using envelope detection, which can reduce power consumption to the microwatt level. At the transmitter, there are two ways to generate the low-power wake-up signal: (1) directly generate the OOK signal in the time domain; (2) multiplex the OFDM signal generation structure, generate the signal in the frequency domain, and then perform inverse Fourier transform to the time domain to indirectly obtain the OOK signal. The advantage of the second method is that it does not increase the complexity of the transmitter in the existing mobile communication system to generate the OOK signal, so it is more suitable for compatibility with the existing mobile system and does not require additional enhancement of the transmitter.

[0045] 2. Low power signal waveform

[0046] In order to reduce the power consumption of LP WUR and achieve power saving, low-power signals are usually sent using simple waveforms, such as the OOK signal waveform shown in (A) of Figure 3, or the FSK signal waveform shown in (B) of Figure 3. Therefore, the terminal can identify the low-power signal through simple energy detection or frequency detection.

[0047] Since OFDM is commonly used in existing NR systems, OOK or FSK signals can be generated using OFDM signal generation methods. For example, the ON / OFF state of the OOK signal is represented by different amplitude information. A constant-amplitude OFDM sequence can be used to generate the ON portion of the OOK signal, while OFF corresponds to no signal transmission. Similarly, FSK signals carry information by transmitting signals at different frequencies. Therefore, a constant-amplitude OFDM sequence can be transmitted at the corresponding frequency while no signal is transmitted at other frequencies. Furthermore, the sequence of the ON OFDM modulation can also carry information through sequences, for example, two sequences can represent information 0 and 1, respectively, or four sequences can represent information 00, 01, 10, and 11, respectively, as shown in Figure 4.

[0048] Terminals that demodulate OOK signals can only demodulate the ON / OFF information, but not the OFDM sequence that generates the OOK signal. Similarly, terminals that demodulate FSK signals can only demodulate the frequency information, but not the OFDM sequence that generates the FSK signal. However, terminals that demodulate OFDM signals can also demodulate the OFDM sequence.

[0049] The signal transmission method provided in the embodiments of the present application is described in detail below through some embodiments and their application scenarios in conjunction with the accompanying drawings.

[0050] Currently, when there are terminals in a cell capable of demodulating different signal waveforms, low-power signals can be transmitted using superimposed waveforms. However, there is currently no solution for how the OFDM sequence that generates the characteristic information of the OOK signal or FSK signal in the superimposed waveform carries information, and how the OFDM sequence is mapped to the characteristic information of the OOK signal or FSK signal. As a result, the terminal cannot determine all the information carried by the superimposed waveform, the complexity of the terminal detecting low-power signals increases, and the reliability of detecting low-power signals is poor.

[0051] An embodiment of the present application provides a signal transmission method, in which a terminal can receive first information of a first signal from a network side, and detect a first signal transmitted based on the first waveform and the second waveform according to the first information, that is, the information carried by the first waveform and the mapping method of the first waveform and the second waveform. That is, in this scheme, the information carried by the first waveform is indicated to the terminal through the first indication information, and the mapping method of the information carried by the first waveform and the superimposed waveform (including the first waveform and the second waveform) is determined. The mapping method of the information carried by the first waveform and the information carried by the second waveform can be determined, that is, the mapping method of the characteristic information of the OFDM sequence and the OOK signal or the FSK signal is obtained to obtain the information carried by the second waveform, so that the terminal can accurately detect the low-power signal based on the first waveform and the second waveform, thereby obtaining the information carried by the first waveform and the second waveform, that is, all the information carried by the superimposed waveform, and reducing the complexity of detecting the low-power signal and improving the reliability of detecting the low-power signal.

[0052] It should be noted that, in the embodiment of the present application, characteristic information may also be referred to as a characteristic unit, and the OFDM sequence is the characteristic sequence.

[0053] The present invention provides a signal transmission method, and Figure 5 shows a flowchart of the signal transmission method provided by the present invention. As shown in Figure 5, the signal transmission method provided by the present invention may include the following steps 201 to 203.

[0054] Step 201: The network-side device sends first information to the terminal.

[0055] Step 202: The terminal receives first information from a network-side device.

[0056] In this embodiment of the present application, the first information includes first indication information and a first mapping method. The first indication information is used to indicate the information carried by the first waveform. The first mapping method is a mapping method between the first waveform and the second waveform. The first information is used by the terminal to detect the first signal, which is a signal transmitted based on the first waveform and the second waveform.

[0057] In the embodiment of the present application, the above-mentioned first signal is a signal formed by the superposition of the first waveform and the second waveform.

[0058] In the embodiment of the present application, the first waveform at least includes an OFDM waveform. The second waveform at least includes at least one of the following: an OOK waveform and an FSK waveform.

[0059] Optionally, in an embodiment of the present application, the above-mentioned first signal includes at least one of the following: a low-power wake-up signal, a low-power beacon signal, a low-power hold signal, a low-power synchronization signal, and a low-power reference signal.

[0060] Optionally, in an embodiment of the present application, the first indication information is specifically used to indicate at least one of the following:

[0061] At least one characteristic sequence of the first waveform and information carried by each characteristic sequence in the at least one characteristic sequence, the characteristic sequence being the characteristic sequence for generating the first signal;

[0062] The type of information carried by the first waveform.

[0063] Optionally, in an embodiment of the present application, the above-mentioned characteristic sequence may be an OFDM sequence for generating the first signal.

[0064] Optionally, in an embodiment of the present application, when the first indication information is specifically used to indicate the type of information carried by the first waveform, the information carried by the first waveform satisfies any one of the following conditions:

[0065] The information carried by all characteristic sequences of the first waveform is the same as that carried by the second waveform;

[0066] The information carried by all characteristic sequences of the first waveform includes the information carried by the second waveform and additional information;

[0067] All characteristic sequences of the first waveform carry only additional information other than the information carried by the second waveform.

[0068] It should be noted that the information carried by the first waveform may include bit information carried by the first waveform; and the additional information refers to information other than the information carried by the second waveform.

[0069] Optionally, in the embodiment of the present application, the first mapping manner may be a mapping manner of a feature sequence of the first waveform and a feature unit of the second waveform.

[0070] Optionally, in an embodiment of the present application, the first mapping method includes any one of the following:

[0071] The feature unit set of the second waveform is divided into a subset for every M feature units, obtaining K subsets, wherein the M feature units include at least one of the first feature unit and the second feature unit, and all first feature units included in each subset are mapped to the same feature sequence of the first waveform, and M and K are both positive integers;

[0072] The feature unit set of the second waveform is divided into a subset for every M first feature units, obtaining K subsets, the M first feature units contained in each subset are mapped to the same feature sequence of the first waveform, and M and K are both positive integers;

[0073] Each first characteristic unit of the second waveform is independently mapped to a characteristic sequence of the first waveform;

[0074] All first feature units of the second waveform are mapped to the same feature sequence of the first waveform.

[0075] It can be understood that mapping all first feature units contained in each subset to the same feature sequence of the first waveform, and mapping the M first feature units contained in each subset to the same feature sequence of the first waveform both refer to generating the first feature units of the second waveform using the feature sequence of the first waveform.

[0076] It should be noted that the feature unit set of the above-mentioned second waveform is divided into a subset for every M feature units, that is, according to the number of feature units, every M feature units are divided into a subset. Here, each time the M feature units are divided, they may be M first feature units, or M second feature units, or they may include some first feature units and some second feature units.

[0077] It can be understood that each first characteristic unit of the second waveform is independently mapped to a characteristic sequence of the first waveform, which means that the characteristic sequence of the first waveform is used to generate a first characteristic unit of the second waveform.

[0078] It can be understood that mapping all first feature units of the second waveform to the same feature sequence of the first waveform means that all first feature units of the second waveform are generated using the feature sequence of the first waveform.

[0079] Optionally, in an embodiment of the present application, the first characteristic unit or the second characteristic unit included in the characteristic unit set of the second waveform corresponds to a bit before source bit encoding. Alternatively, the first characteristic unit or the second characteristic unit included in the characteristic unit set of the second waveform corresponds to a bit after source bit encoding.

[0080] Among them, the encoding includes Manchester encoding.

[0081] Optionally, in an embodiment of the present application, the first characteristic unit of the second waveform is a portion that uses the first waveform to generate a transmission signal, and the second characteristic unit of the second waveform is a portion that does not use the first waveform to generate a transmission signal.

[0082] Optionally, in the embodiment of the present application, the first characteristic unit of the second waveform may be an OOK ON chip, and the second characteristic unit of the second waveform may be an OOK OFF chip.

[0083] The specific scheme of the first mapping method provided in the embodiment of the present application is explained below through specific examples.

[0084] Implementation 1, Assumption 2 N An OFDM sequence of length L carries N ≥ 1 bits of information, and the OFDM sequence is used to generate an OOK ON chip.

[0085] Implementation method 1-1: All OOK ON chips contained in a subset carry the same bit information, that is, multiple ON chips are generated using the same OFDM sequence: the terminal receives waveform-related information (that is, the first information) of the first signal sent by the network side, including the subset division method (that is, the above-mentioned first mapping method), and the mapping relationship between the OFDM sequence and the bit information (that is, the above-mentioned first indication information).

[0086] Subsetting method 1:

[0087] The OOK ON / OFF chip set contained in the low-power signal time domain is divided into a subset for every M chips (ON or OFF) in sequence, and a total of K subsets;

[0088] Subsetting method 2:

[0089] The OOK ON / OFF chip set contained in the low-power signal is divided into a subset for every M ON chips in sequence, and is divided into K subsets in total.

[0090] The terminal receives a low-power signal based on a superimposed waveform sent by a network-side device. A terminal with OFDM detection capability can not only demodulate the ON / OFF information but also demodulate the OFDM sequence that generates the OOK ON chip. The terminal determines the bit information carried by the OFDM waveform based on the above-mentioned subset partitioning method and the mapping relationship between the OFDM sequence and the bit information. Each subset carries N bits of information, and K subsets carry a total of N*K bits of information.

[0091] Optionally, the structure of the low-power signal may include one of the following: at least one OOK sequence, OOK-modulated payload data, or OOK-modulated payload data prefixed with an OOK sequence. For these three structures, each OOK sequence, or an OOK sequence and an OOK-modulated payload, may be divided into subsets.

[0092] Specifically, for the first structure mentioned above, that is, at least one OOK sequence, for example, a low-power signal contains an OOK sequence, an example of the sequence is 1000 1101 0101 1010, and Manchester encoding is not used for the sequence. Therefore, the "1" in the sequence is represented by an ON chip and the "0" is represented by an OFF chip. According to the above-mentioned subset partitioning method 1 and subset partitioning method 2, examples of different numbers of bit information carried by OFDM are shown in Figures 6 and 7, Figure 6 is subset partitioning method 1, and Figure 7 is subset partitioning method 2.

[0093] Among them, subset partitioning method 1 does not limit the number of ON chips contained in the OOK sequence. The OFDM generated sequence corresponding to at least one ON chip contained in the subset can carry bit information. For example, the OFDM generated sequence corresponding to at least one OOK ON chip contained in a subset carries the information of all ON / OFF chips contained in the subset. For example, if the bit information carried by the OFDM generated sequence corresponding to the ON chip contained in subset 1 is 1000, and the bit information carried by the OFDM generated sequence corresponding to the ON chip contained in subset 2 is 1101, and so on. In particular, when a subset contains only OFF chips, the subset does not send an OFDM sequence, corresponding to the subset containing only OFF chips.

[0094] Subset partitioning method 2 places a restriction on the number of ON chips contained in the OOK sequence, that is, the number of ON chips contained in different OOK sequences is equal and can be divided by the number of subsets.

[0095] For the second structure mentioned above, that is, payload data based on OOK modulation, the sender can use a method combined with Manchester coding. In this case, thanks to Manchester coding, for subset partitioning method 1 and subset partitioning method 2, the number of ON chips and OFF chips contained in each subset is equal. Therefore, subset partitioning method 1 and subset partitioning method 2 are equivalent. The specific example is as follows:

[0096] The payload contains 12 information bits and 8 CRC bits, for a total of 20 bits. After Manchester encoding, bit 1 is represented by ON chip + OFF chip, and bit 0 is represented by OFF chip + ON chip. The payload before and after Manchester encoding is as follows:

[0097] Before Manchester encoding: 1010 0011 1100 1011 0101

[0098] After Manchester encoding: 10 01 10 01 01 01 10 10 10 01 01 10 01 10 10 01 10 01 10

[0099] Therefore, subsetting method 1 and subsetting method 2 are as follows:

[0100] According to Manchester encoding, after encoding, the number of ON chips contained in the payload and CRC is equal to the number of OFF chips. Therefore, subset partitioning method 1 and subset partitioning method 2 are equivalent.

[0101] Based on the payload data modulated by OOK, when Manchester coding is not used, the subset division method is the same as that of the first structure (ie, at least one OOK sequence) described above.

[0102] For the third structure mentioned above, that is, the OOK sequence based on the OOK modulated payload data prefix, the subset division method can adopt the method of the first structure mentioned above (that is, at least one OOK sequence) or the second structure (that is, the payload data based on OOK modulation), and the OOK modulated payload data and the OOK sequence part are divided into subsets respectively.

[0103] Implementation 1-2: Each OOK ON chip independently carries bit information without subsetting

[0104] In this embodiment, the OFDM sequence corresponding to each OOK ON chip that generates the ON chip independently carries bit information, and the bit information carried by multiple OFDM sequences corresponding to different ON chips is independent of each other and non-redundant.

[0105] For low-power signal structures, that is, at least one OOK sequence, payload data based on OOK modulation, or an OOK sequence prefixed with OOK modulated payload data, when not combined with Manchester coding, the number of ON chips contained in the multiple transmitted low-power signals may be different, resulting in different bit information transmitted by OFDM corresponding to each transmission. Therefore, this method is more suitable for use in combination with Manchester coding.

[0106] Implementation method 2: The OFDM sequence carries N<1 bit, that is, a certain OFDM sequence is used to generate the OOK ON chip.

[0107] In this embodiment, the OFDM sequence corresponding to each OOK ON chip that generates the ON chip is the same sequence. The OFDM sequence is used to represent the OOK ON chip and does not carry additional information. Therefore, based on the low-power signal based on the superimposed waveform obtained by this method, the OFDM waveform carries the same bit information as the OOK waveform, which can improve the reliability and transmission distance of the low-power signal.

[0108] Specifically, for a low-power signal structure, that is, at least one OOK sequence, payload data based on OOK modulation, or an OOK sequence prefixed with OOK modulation payload data, when Manchester encoding is used, bit 1 is represented by ON chip + OFF chip, and bit 0 is represented by OFF chip + ON chip; when Manchester encoding is not used, bit 1 is represented by ON chip, and bit 0 is represented by OFF chip. Each OOK ON chip is generated by the same OFDM sequence, and each OOK OFF chip is not sent.

[0109] Thus, the various mapping methods described in the above-mentioned embodiments 1 and 2 are shown in the following Table 1:

[0110] Table 1

[0111] Implementation 3: The low-power signal transmission scheme based on the OOK and OFDM superimposed waveform in the above implementation 1 and implementation 2 can be further expanded to a transmission scheme based on the FSK, OOK and OFDM superimposed waveform. Specifically, the OOK and OFDM superimposed waveform scheme in the above implementation 1 and implementation 2 can be applied to each frequency domain branch of FSK. For example, FSK has a total of 2 M Frequency domain branches, each frequency domain branch indicates a code element in M ​​bits of information, each frequency domain branch uses the OOK and OFDM superposition waveform, and the information carried by the OOK and OFDM superposition waveform is represented by J bits. Therefore, based on FSK, the OOK and OFDM superposition waveform carries a total of M*J bits of information, where M and J are positive integers.

[0112] Optionally, in an embodiment of the present application, the terminal has the ability to detect the first waveform.

[0113] In the embodiment of the present application, the above-mentioned multiple methods of generating the OFDM sequence of the OOK ON chip to carry bit information can be flexibly applied to various scenarios where the OFDM waveform and the OOK waveform carry the same or different bits, as well as different low-power signal structure types.

[0114] In one case, when the OFDM waveform carries the same bit information as the OOK waveform, the reliability and transmission distance of the low-power signal can be improved for terminals with OFDM detection capabilities.

[0115] In another case, when the OFDM waveform carries bit information different from the OOK waveform, for a terminal with OFDM detection capability, the number of bit information carried by the low-power signal can be increased (including the bit information carried by the OOK waveform and the bit information carried by the OFDM waveform).

[0116] In another case, the OFDM waveform carries bit information carried by the OOK waveform and additional bit information. At this time, for a terminal with OFDM detection capability, it can not only increase the number of bit information carried by the low-power signal, but also improve the reliability and transmission distance of the low-power signal.

[0117] Step 203: The terminal detects the first signal according to the first information.

[0118] In the embodiment of the present application, the above-mentioned first signal is a signal transmitted based on the first waveform and the second waveform.

[0119] In the embodiment of the present application, the terminal may perform amplitude detection on the first signal according to the first information to demodulate the information carried by the first waveform and the information carried by the second waveform (eg, bit information).

[0120] In an embodiment of the present application, a low-power signal is transmitted based on a superimposed waveform of OOK and OFDM, wherein the OOK ON chip is generated by an OFDM sequence. Only a terminal with OOK detection capability performs amplitude detection on the received low-power signal, determines the ON / OFF chip, and obtains the information carried by the OOK waveform. A terminal with OFDM detection capability can perform amplitude detection on the received low-power signal, determine the ON / OFF chip, and obtain the information carried by the OOK waveform. Furthermore, when a terminal with OFDM detection capability knows the OFDM sequence that generates the OOK ON chip, it can also detect the OFDM sequence and obtain the information carried by the OFDM waveform.

[0121] For low-power signals based on OOK and OFDM superimposed waveform transmission:

[0122] The OFDM waveform can carry the same bit information as the OOK waveform. For terminals with OFDM detection capabilities, the reliability and transmission distance of low-power signals can be improved compared to terminals with only OOK detection capabilities.

[0123] The OFDM waveform can also carry different bit information than the OOK waveform. In this case, for a terminal with OFDM detection capability, the number of bits carried by the low-power signal can be increased compared to a terminal with only OOK detection capability (including the bits carried by the OOK waveform and the bits carried by the OFDM waveform).

[0124] The OFDM waveform can also carry the bit information carried by the OOK waveform and additional bit information. At this time, for a terminal with OFDM detection capability, compared with a terminal with only OOK detection capability, it can not only increase the number of bit information carried by the low-power signal, but also improve the reliability and transmission distance of the low-power signal.

[0125] It should be noted that for terminals with only OOK detection capabilities, since they can only detect OOK waveforms, low-power signals are transmitted based on the superimposed waveform of OOK and OFDM, and there is no performance gain compared to low-power signals transmitted based on a single OOK waveform.

[0126] The signal transmission method provided in the embodiment of the present application is that the terminal can receive the first information of the first signal from the network side, and detect the first signal transmitted based on the first waveform and the second waveform according to the first information, that is, the information carried by the first waveform and the mapping method of the first waveform and the second waveform. That is, in this scheme, the information carried by the first waveform is indicated to the terminal through the first indication information, and is determined by the information carried by the first waveform and the mapping method of the superimposed waveform (including the first waveform and the second waveform). The mapping method of the information carried by the first waveform and the information carried by the second waveform can be determined, that is, the mapping method of the characteristic information of the OFDM sequence and the OOK signal or the FSK signal is obtained to obtain the information carried by the second waveform, so that the terminal can accurately detect the low-power signal based on the first waveform and the second waveform, thereby obtaining the information carried by the first waveform and the second waveform, that is, all the information carried by the superimposed waveform, and reducing the complexity of detecting the low-power signal and improving the reliability of detecting the low-power signal.

[0127] Optionally, in an embodiment of the present application, in combination with FIG. 5 , as shown in FIG. 8 , after the above step 203 , the signal transmission method provided in the embodiment of the present application further includes the following steps 204 and 205 .

[0128] Step 204: The terminal obtains information carried by the first waveform and information carried by the second waveform.

[0129] In the embodiment of the present application, the information carried by the first waveform and the information carried by the second waveform can be obtained by the terminal by detecting the first signal.

[0130] Step 205: The terminal determines information carried by the first signal based on information carried by the first waveform and information carried by the second waveform.

[0131] In the embodiment of the present application, the terminal may combine the information carried by the first waveform and the information carried by the second waveform to obtain the information carried by the first signal.

[0132] Each of the above-mentioned method embodiments, or various possible implementation methods in each method embodiment, can be executed separately, or any two or more of them can be executed in combination with each other. The specific implementation can be determined according to actual usage requirements, and the embodiments of this application do not limit this.

[0133] The signal transmission method provided in the embodiment of the present application can be executed by a signal transmission device. In the embodiment of the present application, the signal transmission device provided in the embodiment of the present application is described by taking the signal transmission method executed by the signal transmission device as an example.

[0134] FIG9 shows a possible structural diagram of a signal transmission device involved in an embodiment of the present application. As shown in FIG9 , the signal transmission device 60 may include: a receiving module 61 and a detecting module 62 .

[0135] The receiving module 61 is configured to receive first information from a network-side device. The first information includes first indication information and a first mapping mode. The first indication information indicates information carried by the first waveform. The first mapping mode is a mapping mode between the first waveform and the second waveform. The detecting module 62 is configured to detect a first signal based on the first information received by the receiving module 61. The first signal is a signal transmitted based on the first waveform and the second waveform. The first waveform includes at least an OFDM waveform, and the second waveform includes at least one of the following: an OOK waveform and an FSK waveform.

[0136] An embodiment of the present application provides a signal transmission device, which can receive first information of a first signal from a network side, and detect a first signal transmitted based on the first waveform and the second waveform according to the first information, that is, the information carried by the first waveform and the mapping method of the first waveform and the second waveform. That is, in this scheme, the information carried by the first waveform is indicated to the terminal through the first indication information, and the mapping method of the information carried by the first waveform and the superimposed waveform (including the first waveform and the second waveform) is determined. The mapping method of the information carried by the first waveform and the information carried by the second waveform can be determined, that is, the mapping method of the characteristic information of the OFDM sequence and the OOK signal or the FSK signal is obtained to obtain the information carried by the second waveform, so that the terminal can accurately detect the low-power signal based on the first waveform and the second waveform, thereby obtaining the information carried by the first waveform and the second waveform, that is, all the information carried by the superimposed waveform, and reducing the complexity of detecting the low-power signal and improving the reliability of detecting the low-power signal.

[0137] In one possible implementation, the first indication information is specifically used to indicate at least one of the following:

[0138] At least one characteristic sequence of the first waveform and information carried by each characteristic sequence in the at least one characteristic sequence, the characteristic sequence being the characteristic sequence for generating the first signal;

[0139] The type of information carried by the first waveform.

[0140] In one possible implementation, the first indication information is specifically used to indicate a type of information carried by the first waveform; and the information carried by the first waveform satisfies any one of the following conditions:

[0141] The information carried by all characteristic sequences of the first waveform is the same as that carried by the second waveform;

[0142] The information carried by all characteristic sequences of the first waveform includes the information carried by the second waveform and additional information;

[0143] All characteristic sequences of the first waveform carry only additional information other than the information carried by the second waveform.

[0144] In a possible implementation, the first mapping method includes any one of the following:

[0145] The feature unit set of the second waveform is divided into a subset for every M feature units, obtaining K subsets, wherein the M feature units include at least one of the first feature unit and the second feature unit, and all first feature units included in each subset are mapped to the same feature sequence of the first waveform, and M and K are both positive integers;

[0146] The feature unit set of the second waveform is divided into a subset for every M first feature units, obtaining K subsets, the M first feature units contained in each subset are mapped to the same feature sequence of the first waveform, and M and K are both positive integers;

[0147] Each first characteristic unit of the second waveform is independently mapped to a characteristic sequence of the first waveform;

[0148] All first characteristic units of the second waveform are mapped to the same characteristic sequence of the first waveform;

[0149] The first characteristic unit of the second waveform is a portion that uses the first waveform to generate a transmission signal, and the second characteristic unit of the second waveform is a portion that does not use the first waveform to generate a transmission signal.

[0150] In one possible implementation, the first characteristic unit or the second characteristic unit included in the characteristic unit set of the second waveform corresponds to a bit before source bit encoding; or the first characteristic unit or the second characteristic unit included in the characteristic unit set of the second waveform corresponds to a bit after source bit encoding. The encoding includes Manchester encoding.

[0151] In a possible implementation, the first signal includes at least one of the following: a low-power wake-up signal, a low-power beacon signal, a low-power hold signal, a low-power synchronization signal, and a low-power reference signal.

[0152] In a possible implementation, the terminal has the capability of detecting the first waveform.

[0153] In one possible implementation, the signal transmission device 60 provided in an embodiment of the present application further includes an acquisition module and a determination module. The acquisition module is configured to acquire information carried by the first waveform and information carried by the second waveform after the detection module 62 detects the first signal based on the first information. The determination module is configured to determine the information carried by the first signal based on the information carried by the first waveform and the information carried by the second waveform acquired by the acquisition module.

[0154] The signal transmission device in the embodiments of the present application can be a terminal, such as a terminal with an operating system, or a component within the terminal, such as an integrated circuit or chip. For example, the terminal can include, but is not limited to, the types of terminal 11 listed above. Other devices can include servers, network attached storage (NAS), and the like, and are not specifically limited in the embodiments of the present application.

[0155] The signal transmission device provided in the embodiment of the present application can implement each process implemented in the above method embodiment and achieve the same technical effect. To avoid repetition, it will not be described here.

[0156] FIG10 shows a possible structural diagram of a signal transmission device involved in an embodiment of the present application. As shown in FIG10 , the signal transmission device 70 may include: a sending module 71 .

[0157] Among them, the sending module 71 is used to send first information to the terminal, and the first information includes first indication information and a first mapping method. The first indication information is used to indicate the information carried by the first waveform, and the first mapping method is a mapping method of the first waveform and the second waveform; wherein the first information is used by the terminal to detect the first signal, and the first signal is a signal transmitted based on the first waveform and the second waveform; the first waveform includes at least an OFDM waveform, and the second waveform includes at least one of the following: an OOK waveform and an FSK waveform.

[0158] An embodiment of the present application provides a signal transmission device, which can send first information of a first signal to a terminal, so that the terminal can detect the first signal transmitted based on the first waveform and the second waveform according to the first information, that is, the information carried by the first waveform and the mapping method of the first waveform and the second waveform. That is, in this scheme, the information carried by the first waveform is indicated to the terminal through the first indication information, and the mapping method of the information carried by the first waveform and the superimposed waveform (including the first waveform and the second waveform) is determined. The mapping method of the information carried by the first waveform and the information carried by the second waveform can be determined, that is, the mapping method of the characteristic information of the OFDM sequence and the OOK signal or the FSK signal is obtained to obtain the information carried by the second waveform, so that the terminal can accurately detect the low-power signal based on the first waveform and the second waveform, thereby obtaining the information carried by the first waveform and the second waveform, that is, all the information carried by the superimposed waveform, and reducing the complexity of detecting the low-power signal and improving the reliability of detecting the low-power signal.

[0159] In one possible implementation, the first indication information is specifically used to indicate at least one of the following:

[0160] At least one characteristic sequence of the first waveform and information carried by each characteristic sequence in the at least one characteristic sequence, the characteristic sequence being the characteristic sequence for generating the first signal;

[0161] The type of information carried by the first waveform.

[0162] In one possible implementation, the first indication information is specifically used to indicate a type of information carried by the first waveform; and the information carried by the first waveform satisfies any one of the following conditions:

[0163] The information carried by all characteristic sequences of the first waveform is the same as that carried by the second waveform;

[0164] The information carried by all characteristic sequences of the first waveform includes the information carried by the second waveform and additional information;

[0165] All characteristic sequences of the first waveform carry only additional information other than the information carried by the second waveform.

[0166] In a possible implementation, the first mapping method includes any one of the following:

[0167] The feature unit set of the second waveform is divided into a subset for every M feature units, obtaining K subsets, wherein the M feature units include at least one of the first feature unit and the second feature unit, and all first feature units included in each subset are mapped to the same feature sequence of the first waveform, and M and K are both positive integers;

[0168] The feature unit set of the second waveform is divided into a subset for every M first feature units, obtaining K subsets, the M first feature units contained in each subset are mapped to the same feature sequence of the first waveform, and M and K are both positive integers;

[0169] Each first characteristic unit of the second waveform is independently mapped to a characteristic sequence of the first waveform;

[0170] All first characteristic units of the second waveform are mapped to the same characteristic sequence of the first waveform;

[0171] The first characteristic unit of the second waveform is a portion that uses the first waveform to generate a transmission signal, and the second characteristic unit of the second waveform is a portion that does not use the first waveform to generate a transmission signal.

[0172] In one possible implementation, the first characteristic unit or the second characteristic unit included in the characteristic unit set of the second waveform corresponds to a bit before source bit encoding; or the first characteristic unit or the second characteristic unit included in the characteristic unit set of the second waveform corresponds to a bit after source bit encoding. The encoding includes Manchester encoding.

[0173] In a possible implementation, the first signal includes at least one of the following: a low-power wake-up signal, a low-power beacon signal, a low-power hold signal, a low-power synchronization signal, and a low-power reference signal.

[0174] The signal transmission device provided in the embodiment of the present application can implement each process implemented in the above method embodiment and achieve the same technical effect. To avoid repetition, it will not be described here.

[0175] As shown in Figure 11, an embodiment of the present application further provides a communication device 5000, including a processor 5001 and a memory 5002, wherein the memory 5002 stores a program or instruction that can be run on the processor 5001. For example, when the communication device 5000 is the above-mentioned terminal, the program or instruction, when executed by the processor 5001, implements the various steps of the above-mentioned terminal-side method embodiment, and can achieve the same technical effect. To avoid repetition, it is not repeated here. When the communication device 5000 is the above-mentioned network-side device, the program or instruction, when executed by the processor 5001, implements the various steps of the above-mentioned network-side device-side method embodiment, and can achieve the same technical effect. To avoid repetition, it is not repeated here.

[0176] The present application also provides a terminal comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps in the above-described method embodiment. This terminal embodiment corresponds to the above-described terminal-side method embodiment, and each implementation process and implementation method of the above-described method embodiment can be applied to this terminal embodiment and achieve the same technical effect. Specifically, Figure 12 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.

[0177] The terminal 7000 includes but is not limited to: a radio frequency unit 7001, a network module 7002, an audio output unit 7003, an input unit 7004, a sensor 7005, a display unit 7006, a user input unit 7007, an interface unit 7008, a memory 7009 and at least some of the components of the processor 7010.

[0178] Those skilled in the art will appreciate that the terminal 7000 may also include a power supply (such as a battery) to power various components. The power supply may be logically connected to the processor 7010 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The terminal structure shown in FIG12 does not limit the terminal. The terminal may include more or fewer components than shown, or may combine certain components, or have different component arrangements, which will not be described in detail here.

[0179] It should be understood that in an embodiment of the present application, the input unit 7004 may include a graphics processing unit (GPU) 70041 and a microphone 70042, and the graphics processor 70041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 7006 may include a display panel 70061, and the display panel 70061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 7007 includes a touch panel 70071 and at least one of other input devices 70072. The touch panel 70071 is also called a touch screen. The touch panel 70071 may include two parts: a touch detection device and a touch controller. Other input devices 70072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and an operating stick, which will not be repeated here.

[0180] In the embodiment of the present application, after receiving downlink data from a network-side device, the RF unit 7001 may transmit the data to the processor x10 for processing. Furthermore, the RF unit 7001 may send uplink data to the network-side device. Typically, the RF unit 7001 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0181] The memory 7009 can be used to store software programs or instructions and various data. The memory 7009 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 7009 may include a volatile memory or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), and a direct memory bus random access memory (DRRAM). The memory 7009 in the embodiment of the present application includes, but is not limited to, these and any other suitable types of memory.

[0182] The processor 7010 may include one or more processing units. Optionally, the processor 7010 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into the processor 7010.

[0183] The radio frequency unit 7001 is configured to receive first information from a network-side device, the first information including first indication information and a first mapping mode, the first indication information indicating information carried by the first waveform, and the first mapping mode being a mapping mode between the first waveform and the second waveform. The processor 7010 is configured to detect a first signal based on the first information, the first signal being a signal transmitted based on the first waveform and the second waveform. The first waveform includes at least an OFDM waveform, and the second waveform includes at least one of the following: an OOK waveform and an FSK waveform.

[0184] An embodiment of the present application provides a terminal, which can receive first information of a first signal from a network side, and detect a first signal transmitted based on the first waveform and the second waveform according to the first information, that is, the information carried by the first waveform and the mapping method of the first waveform and the second waveform. That is, in this scheme, the information carried by the first waveform is indicated to the terminal through the first indication information, and is determined by the information carried by the first waveform and the mapping method of the superimposed waveform (including the first waveform and the second waveform). The mapping method of the information carried by the first waveform and the information carried by the second waveform can be determined, that is, the mapping method of the characteristic information of the OFDM sequence and the OOK signal or the FSK signal is obtained to obtain the information carried by the second waveform, so that the terminal can accurately detect the low-power signal based on the first waveform and the second waveform, thereby obtaining the information carried by the first waveform and the second waveform, that is, all the information carried by the superimposed waveform, and reducing the complexity of detecting the low-power signal and improving the reliability of detecting the low-power signal.

[0185] Optionally, the first indication information is specifically used to indicate at least one of the following:

[0186] At least one characteristic sequence of the first waveform and information carried by each characteristic sequence in the at least one characteristic sequence, the characteristic sequence being the characteristic sequence for generating the first signal;

[0187] The type of information carried by the first waveform.

[0188] Optionally, the first indication information is specifically used to indicate a type of information carried by the first waveform; the information carried by the first waveform satisfies any one of the following conditions:

[0189] The information carried by all characteristic sequences of the first waveform is the same as that carried by the second waveform;

[0190] The information carried by all characteristic sequences of the first waveform includes the information carried by the second waveform and additional information;

[0191] All characteristic sequences of the first waveform carry only additional information other than the information carried by the second waveform.

[0192] Optionally, the first mapping method includes any one of the following:

[0193] The feature unit set of the second waveform is divided into a subset for every M feature units, obtaining K subsets, wherein the M feature units include at least one of the first feature unit and the second feature unit, and all first feature units included in each subset are mapped to the same feature sequence of the first waveform, and M and K are both positive integers;

[0194] The feature unit set of the second waveform is divided into a subset for every M first feature units, obtaining K subsets, the M first feature units contained in each subset are mapped to the same feature sequence of the first waveform, and M and K are both positive integers;

[0195] Each first characteristic unit of the second waveform is independently mapped to a characteristic sequence of the first waveform;

[0196] All first characteristic units of the second waveform are mapped to the same characteristic sequence of the first waveform;

[0197] The first characteristic unit of the second waveform is a portion that uses the first waveform to generate a transmission signal, and the second characteristic unit of the second waveform is a portion that does not use the first waveform to generate a transmission signal.

[0198] Optionally, the first characteristic unit or the second characteristic unit included in the characteristic unit set of the second waveform corresponds to a bit before source bit encoding; or the first characteristic unit or the second characteristic unit included in the characteristic unit set of the second waveform corresponds to a bit after source bit encoding. The encoding includes Manchester encoding.

[0199] Optionally, the first signal includes at least one of the following: a low-power wake-up signal, a low-power beacon signal, a low-power hold signal, a low-power synchronization signal, and a low-power reference signal.

[0200] Optionally, the terminal has the ability to detect the first waveform.

[0201] Optionally, the processor 7010 is further configured to obtain information carried by the first waveform and information carried by the second waveform after detecting the first signal based on the first information; and determine information carried by the first signal based on the information carried by the first waveform and the information carried by the second waveform.

[0202] It can be understood that the implementation process of each implementation method mentioned in this terminal embodiment can refer to the relevant description of the above method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0203] The present application also provides a network-side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps of the above-described method embodiment. This network-side device embodiment corresponds to the above-described network-side device method embodiment, and each implementation process and implementation method of the above-described method embodiment are applicable to this network-side device embodiment and can achieve the same technical effects.

[0204] Specifically, embodiments of the present application also provide a network-side device. As shown in Figure 13, the network-side device 600 includes an antenna 601, a radio frequency device 602, a baseband device 603, a processor 604, and a memory 605. Antenna 601 is connected to radio frequency device 602. In the uplink direction, radio frequency device 602 receives information via antenna 601 and sends the received information to baseband device 603 for processing. In the downlink direction, baseband device 603 processes the information to be transmitted and sends it to radio frequency device 602. Radio frequency device 602 processes the received information and then sends it through antenna 601.

[0205] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 603 , which includes a baseband processor.

[0206] The baseband device 603 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 13, one of the chips is, for example, a baseband processor, which is connected to the memory 605 through a bus interface to call the program in the memory 605 and execute the network device operations shown in the above method embodiment.

[0207] The network side device may further include a network interface 606, which is, for example, a Common Public Radio Interface (CPRI).

[0208] Specifically, the network side device 600 of the embodiment of the present application also includes: instructions or programs stored in the memory 605 and can be run on the processor 604. The processor 604 calls the instructions or programs in the memory 605 to execute the methods executed by each module shown in the above embodiment and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0209] Among them, the above-mentioned radio frequency device 602 is used to send first information to the terminal, and the first information includes first indication information and a first mapping method. The first indication information is used to indicate the information carried by the first waveform, and the first mapping method is a mapping method of the first waveform and the second waveform; wherein the first information is used by the terminal to detect the first signal, and the first signal is a signal transmitted based on the first waveform and the second waveform; the first waveform includes at least an OFDM waveform, and the second waveform includes at least one of the following: an OOK waveform and an FSK waveform.

[0210] An embodiment of the present application provides a network-side device, which can send first information of a first signal to a terminal, so that the terminal can detect the first signal transmitted based on the first waveform and the second waveform according to the first information, that is, the information carried by the first waveform and the mapping method of the first waveform and the second waveform. That is, in this scheme, the information carried by the first waveform is indicated to the terminal through the first indication information, and the mapping method of the information carried by the first waveform and the superimposed waveform (including the first waveform and the second waveform) is determined. The mapping method of the information carried by the first waveform and the information carried by the second waveform can be determined, that is, the mapping method of the characteristic information of the OFDM sequence and the OOK signal or the FSK signal is obtained to obtain the information carried by the second waveform, so that the terminal can accurately detect the low-power signal based on the first waveform and the second waveform, thereby obtaining the information carried by the first waveform and the second waveform, that is, all the information carried by the superimposed waveform, and reducing the complexity of detecting the low-power signal and improving the reliability of detecting the low-power signal.

[0211] In one possible implementation, the first indication information is specifically used to indicate at least one of the following:

[0212] At least one characteristic sequence of the first waveform and information carried by each characteristic sequence in the at least one characteristic sequence, the characteristic sequence being the characteristic sequence for generating the first signal;

[0213] The type of information carried by the first waveform.

[0214] In one possible implementation, the first indication information is specifically used to indicate a type of information carried by the first waveform; and the information carried by the first waveform satisfies any one of the following conditions:

[0215] The information carried by all characteristic sequences of the first waveform is the same as that carried by the second waveform;

[0216] The information carried by all characteristic sequences of the first waveform includes the information carried by the second waveform and additional information;

[0217] All characteristic sequences of the first waveform carry only additional information other than the information carried by the second waveform.

[0218] In a possible implementation, the first mapping method includes any one of the following:

[0219] The feature unit set of the second waveform is divided into a subset for every M feature units, obtaining K subsets, wherein the M feature units include at least one of the first feature unit and the second feature unit, and all first feature units included in each subset are mapped to the same feature sequence of the first waveform, and M and K are both positive integers;

[0220] The feature unit set of the second waveform is divided into a subset for every M first feature units, obtaining K subsets, the M first feature units contained in each subset are mapped to the same feature sequence of the first waveform, and M and K are both positive integers;

[0221] Each first characteristic unit of the second waveform is independently mapped to a characteristic sequence of the first waveform;

[0222] All first characteristic units of the second waveform are mapped to the same characteristic sequence of the first waveform;

[0223] The first characteristic unit of the second waveform is a portion that uses the first waveform to generate a transmission signal, and the second characteristic unit of the second waveform is a portion that does not use the first waveform to generate a transmission signal.

[0224] In one possible implementation, the first characteristic unit or the second characteristic unit included in the characteristic unit set of the second waveform corresponds to a bit before source bit encoding; or the first characteristic unit or the second characteristic unit included in the characteristic unit set of the second waveform corresponds to a bit after source bit encoding. The encoding includes Manchester encoding.

[0225] In a possible implementation, the first signal includes at least one of the following: a low-power wake-up signal, a low-power beacon signal, a low-power hold signal, a low-power synchronization signal, and a low-power reference signal.

[0226] It can be understood that the implementation process of each implementation method mentioned in this network side device embodiment can refer to the relevant description of the above method embodiment and achieve the same or corresponding technical effect. To avoid repetition, it will not be repeated here.

[0227] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned signal transmission method embodiment are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0228] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0229] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned signal transmission method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0230] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0231] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the above-mentioned signal transmission method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0232] An embodiment of the present application further provides a wireless communication system, including: a terminal and a network-side device, wherein the terminal can be used to execute the steps of the signal transmission method described above, and the network-side device can be used to execute the steps of the signal transmission method described above.

[0233] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0234] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general-purpose hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for enabling a terminal or network-side device to execute the methods described in each embodiment of the present application.

[0235] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. A signal transmission method, comprising: The terminal receives first information from a network-side device, where the first information includes first indication information and a first mapping mode, where the first indication information is used to indicate information carried by the first waveform, and the first mapping mode is a mapping mode between the first waveform and a second waveform; The terminal detects a first signal according to the first information, where the first signal is a signal transmitted based on the first waveform and the second waveform; The first waveform at least includes an orthogonal frequency division multiplexing (OFDM) waveform, and the second waveform at least includes at least one of the following: an on-off keying (OOK) waveform and a frequency shift keying (FSK) waveform.

2. The method according to claim 1, wherein: The first indication information is specifically used to indicate at least one of the following: at least one characteristic sequence of the first waveform and information carried by each characteristic sequence in the at least one characteristic sequence, the characteristic sequence being a characteristic sequence for generating the first signal; The type of information carried by the first waveform.

3. The method according to claim 2, wherein: The first indication information is specifically used to indicate the type of information carried by the first waveform; The information carried by the first waveform satisfies any one of the following conditions: The information carried by all characteristic sequences of the first waveform is the same as the information carried by the second waveform; The information carried by all characteristic sequences of the first waveform includes the information carried by the second waveform and additional information; All characteristic sequences of the first waveform carry only additional information other than the information carried by the second waveform.

4. The method according to any one of claims 1 to 3, wherein: The first mapping method includes any one of the following: The feature unit set of the second waveform is divided into a subset for every M feature units to obtain K subsets, wherein the M feature units include at least one of the first feature unit and the second feature unit, and all the first feature units contained in each subset are mapped to the same feature sequence of the first waveform, and M and K are both positive integers; The feature unit set of the second waveform is divided into a subset for every M first feature units, so as to obtain K subsets, the M first feature units contained in each subset are mapped to the same feature sequence of the first waveform, and M and K are both positive integers; Each first characteristic unit of the second waveform is independently mapped to a characteristic sequence of the first waveform; All first characteristic units of the second waveform are mapped to the same characteristic sequence of the first waveform; The first characteristic unit of the second waveform is a portion that uses the first waveform to generate a transmission signal, and the second characteristic unit of the second waveform is a portion that does not use the first waveform to generate a transmission signal.

5. The method according to claim 4, wherein: The first characteristic unit or the second characteristic unit included in the characteristic unit set of the second waveform corresponds to a bit before source bit encoding; or, The first characteristic unit or the second characteristic unit included in the characteristic unit set of the second waveform corresponds to a bit after the source bit is encoded; Wherein, the encoding includes Manchester encoding.

6. The method according to any one of claims 1 to 5, wherein: The first signal includes at least one of the following: a low-power wake-up signal, a low-power beacon signal, a low-power hold signal, a low-power synchronization signal, and a low-power reference signal.

7. The method according to any one of claims 1 to 6, wherein: The terminal has the capability of detecting the first waveform.

8. The method according to any one of claims 1 to 7, wherein: After the terminal detects the first signal according to the first information, the method further includes: The terminal obtains information carried by the first waveform and information carried by the second waveform; The terminal determines information carried by the first signal according to information carried by the first waveform and information carried by the second waveform.

9. A signal transmission method, comprising: The network side device sends first information to the terminal, where the first information includes first indication information and a first mapping mode, where the first indication information is used to indicate information carried by the first waveform, and the first mapping mode is a mapping mode between the first waveform and the second waveform; Among them, the first information is used by the terminal to detect a first signal, and the first signal is a signal transmitted based on the first waveform and the second waveform; the first waveform at least includes an orthogonal frequency division multiplexing OFDM waveform, and the second waveform includes at least one of the following: an on-off keying OOK waveform and a frequency shift keying FSK waveform.

10. The method according to claim 9, wherein: The first indication information is specifically used to indicate at least one of the following: at least one characteristic sequence of the first waveform and information carried by each characteristic sequence in the at least one characteristic sequence, the characteristic sequence being a characteristic sequence for generating the first signal; The type of information carried by the first waveform.

11. The method according to claim 10, wherein: The first indication information is specifically used to indicate the type of information carried by the first waveform; The information carried by the first waveform satisfies any one of the following conditions: The information carried by all characteristic sequences of the first waveform is the same as the information carried by the second waveform; The information carried by all characteristic sequences of the first waveform includes the information carried by the second waveform and additional information; All characteristic sequences of the first waveform carry only additional information other than the information carried by the second waveform.

12. The method according to any one of claims 9 to 11, wherein: The first mapping method includes any one of the following: The feature unit set of the second waveform is divided into a subset for every M feature units to obtain K subsets, wherein the M feature units include at least one of the first feature unit and the second feature unit, and all the first feature units contained in each subset are mapped to the same feature sequence of the first waveform, and M and K are both positive integers; The feature unit set of the second waveform is divided into a subset for every M first feature units, so as to obtain K subsets, the M first feature units contained in each subset are mapped to the same feature sequence of the first waveform, and M and K are both positive integers; Each first characteristic unit of the second waveform is independently mapped to a characteristic sequence of the first waveform; All first characteristic units of the second waveform are mapped to the same characteristic sequence of the first waveform; The first characteristic unit of the second waveform is a portion that uses the first waveform to generate a transmission signal, and the second characteristic unit of the second waveform is a portion that does not use the first waveform to generate a transmission signal.

13. The method according to claim 12, wherein: The first characteristic unit or the second characteristic unit included in the characteristic unit set of the second waveform corresponds to a bit before source bit encoding; or, The first characteristic unit or the second characteristic unit included in the characteristic unit set of the second waveform corresponds to a bit after the source bit is encoded; Wherein, the encoding includes Manchester encoding.

14. The method according to any one of claims 9 to 13, wherein: The first signal includes at least one of the following: a low-power wake-up signal, a low-power beacon signal, a low-power hold signal, a low-power synchronization signal, and a low-power reference signal.

15. A signal transmission device, comprising: Receiving module and detecting module; The receiving module is used to receive first information from a network-side device, where the first information includes first indication information and a first mapping method, where the first indication information is used to indicate information carried by the first waveform, and the first mapping method is a mapping method between the first waveform and the second waveform; The detection module is used to detect a first signal according to the first information received by the receiving module, where the first signal is a signal transmitted based on the first waveform and the second waveform; The first waveform at least includes an orthogonal frequency division multiplexing (OFDM) waveform, and the second waveform at least includes at least one of the following: an on-off keying (OOK) waveform and a frequency shift keying (FSK) waveform.

16. A signal transmission device, comprising: Send module; The sending module is used to send first information to the terminal, where the first information includes first indication information and a first mapping mode, where the first indication information is used to indicate information carried by the first waveform, and the first mapping mode is a mapping mode between the first waveform and the second waveform; Among them, the first information is used by the terminal to detect a first signal, and the first signal is a signal transmitted based on the first waveform and the second waveform; the first waveform at least includes an orthogonal frequency division multiplexing OFDM waveform, and the second waveform includes at least one of the following: an on-off keying OOK waveform and a frequency shift keying FSK waveform.

17. A terminal, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the signal transmission method according to any one of claims 1 to 8 are implemented.

18. A network side device, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the signal transmission method according to any one of claims 9 to 14 are implemented.

19. A communication system, comprising the signal transmission device according to claim 15 and the signal transmission device according to claim 16; or The communication system comprises the terminal as claimed in claim 17 and the network side device as claimed in claim 18.

20. A readable storage medium storing a program or instruction, wherein the program or instruction, when executed by a processor, implements the signal transmission method according to any one of claims 1 to 8, or implements the steps of the signal transmission method according to any one of claims 9 to 14.

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