Signal transmission method and apparatus, signal receiving method and apparatus, and device

Abstract

The present application belongs to the technical field of communications. Disclosed are a signal transmission method and apparatus, a signal receiving method and apparatus, and a device. The signal transmission method in the embodiments of the present application comprises: a first device generating a target signal, the target signal occupying at least one first time unit, wherein a second time unit comprises a plurality of first time units, and the second time unit comprises a time-domain resource unit in an OFDM system; and the first device starting to transmit the target signal from a target first time unit in the second time unit.

Description

Signal sending method, receiving method, device and equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. 202410151776.7 filed in China on February 2, 2024, 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 sending method, receiving method, device and equipment. Background Art

[0004] New communication devices introduced in some communication systems, such as Internet of Things (IoT) devices, Ambient IoT (A-IoT) devices, or Low Power Wake Up Receiver (LP WUR) devices, send or receive signals that are different from those sent or received by traditional terminals. This makes it easy for the signals sent or received by these devices to fail to align with the time domain resource units of the orthogonal frequency division multiplex (OFDM) system. Summary of the Invention

[0005] The embodiments of the present application provide a signal sending method, receiving method, apparatus and device, which can solve the problem that the signal sent or received by the device is easily unable to align with the time domain resource unit of the OFDM system.

[0006] In a first aspect, a signal transmission method is provided, comprising:

[0007] The first device generates a target signal, where the target signal occupies at least one first time unit; wherein a second time unit includes a plurality of the first time units, and the second time unit includes a time domain resource unit in an OFDM system;

[0008] The first device sends the target signal starting from a target first time unit in the second time unit.

[0009] In a second aspect, a signal receiving method is provided, comprising:

[0010] The second device receives the target signal;

[0011] The target signal occupies at least one first time unit, the second time unit includes multiple first time units, and the second time unit includes a time domain resource unit in the OFDM system.

[0012] In a third aspect, a signal sending device is provided, including:

[0013] A generating module, configured to generate a target signal, wherein the target signal occupies at least one first time unit; wherein a second time unit includes a plurality of the first time units, and the second time unit includes a time domain resource unit in an OFDM system;

[0014] A sending module is configured to send the target signal starting from a target first time unit in the second time unit.

[0015] In a fourth aspect, a signal receiving device is provided, comprising:

[0016] A receiving module, used for receiving a target signal;

[0017] The target signal occupies at least one first time unit, the second time unit includes multiple first time units, and the second time unit includes a time domain resource unit in the OFDM system.

[0018] In a fifth aspect, a communication 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 signal sending method provided in the embodiment of the present application are implemented.

[0019] In the sixth aspect, a communication device is provided, comprising a processor and a communication interface, wherein the processor is used to generate a target signal, and the target signal occupies at least one first time unit; wherein a second time unit includes multiple first time units, and the second time unit includes a time domain resource unit in an OFDM system; and the communication interface is used to send the target signal starting from the target first time unit in the second time unit.

[0020] In the seventh aspect, a communication 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 signal receiving method provided in the embodiment of the present application are implemented.

[0021] In the eighth aspect, a communication device is provided, comprising a processor and a communication interface, wherein the communication interface is used to receive a target signal; wherein the target signal occupies at least one first time unit, a second time unit includes multiple first time units, and the second time unit includes a time domain resource unit in an OFDM system.

[0022] 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 signal sending method provided in the embodiment of the present application are implemented, or the steps of the signal receiving method provided in the embodiment of the present application are implemented.

[0023] In the tenth aspect, a wireless communication system is provided, including: a first device and a second device, wherein the first device can be used to execute the steps of the signal sending method provided in the embodiment of the present application, and the second device can be used to execute the steps of the signal receiving method provided in the embodiment of the present application.

[0024] In the eleventh aspect, a chip is provided, which includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run a program or instruction to implement the steps of the signal sending method provided in the embodiment of the present application, or to implement the steps of the signal receiving method provided in the embodiment of the present application.

[0025] 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 sending method provided in the embodiment of the present application, or the computer program / program product is executed by at least one processor to implement the steps of the signal receiving method provided in the embodiment of the present application.

[0026] In an embodiment of the present application, a first device generates a target signal, wherein the target signal occupies at least one first time unit; wherein a second time unit includes multiple first time units, and the second time unit includes a time domain resource unit in an OFDM system; and the first device transmits the target signal starting from a target first time unit in the second time unit. Thus, since the second time unit includes a time domain resource unit in an OFDM system and the second time unit includes multiple first time units, transmitting the target signal starting from the target first time unit in the second time unit can make it easier to align the target signal with the time domain resource unit in the OFDM system, thereby maximizing the reuse of the OFDM system's frame structure design and reducing the complexity of device implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG1 is a block diagram of a wireless communication system to which embodiments of the present application may be applied;

[0028] FIG2 is a flow chart of a signal sending method provided in an embodiment of the present application;

[0029] FIG3 is a schematic diagram of a first time unit provided in an embodiment of the present application;

[0030] FIG4 is a schematic diagram of another first time unit provided in an embodiment of the present application;

[0031] FIG5 is a flow chart of a signal receiving method provided in an embodiment of the present application;

[0032] FIG6 is a structural diagram of a signal sending device provided in an embodiment of the present application;

[0033] FIG7 is a structural diagram of a signal receiving device provided in an embodiment of the present application;

[0034] FIG8 is a structural diagram of a communication device provided in an embodiment of the present application;

[0035] FIG9 is a structural diagram of another communication device provided in an embodiment of the present application;

[0036] FIG10 is a structural diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0037] 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.

[0038] 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 do not limit the number of objects, 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.

[0039] 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.

[0040] 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.

[0041] 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 can 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), a teller machine, a self-service machine, an Internet of Things (IoT) device, or an ambient IoT (A-IoT) device, etc., a terminal-side device. 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, vehicle-mounted controller, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip or 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.

[0042] The network-side device 12 may include an access network device or a core network device, wherein the access network device may also be referred to as a 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 (AP), or a wireless fidelity (WiFi) node. 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 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.

[0043] The core network equipment may include but is not limited to at least one of the following: core network node, core network function, mobility management entity (MME), access mobility management function (AMF), session management function (SMF), user plane function (UPF), policy control function (PCF), policy and charging rules function unit (PCRF), edge application service discovery function (EASDF), unified data management (UDM), unified data repository (UDR), home user server (HSS), centralized network configuration (CNC), network storage function (NRF), network exposure function (NEF), local NEF (L-NEF), binding support function (BSF), application function ( It should be noted that in the embodiments of the present application, only the core network device in the NR system is introduced as an example, and the specific type of the core network device is not limited.

[0044] In some embodiments, the A-IoT device is characterized based on its energy storage capacity and its ability to generate radio frequency signals for transmission. The A-IoT device has one of the following energy storage capabilities:

[0045] Storage Capacity 1: No ability to store energy.

[0046] Storage capacity 2: Energy can be stored up to E1 or E2 joules, where it is possible that E1 = E2.

[0047] Storage capacity3: Energy can be stored up to E2 joules.

[0048] Depending on these storage capacities, the study considered the following set of A-IoT devices:

[0049] Device A: No energy storage, no independent signal generation / amplification, i.e. backscatter transmission.

[0050] Device B: has energy storage, no independent signal generation, i.e. backscatter transmission. The use of stored energy may include amplification of the reflected signal.

[0051] Device C: has energy storage and independent signal generation, i.e., active RF components for transmission.

[0052] Devices with different energy storage capacities also affect their transmission quality. Generally, devices with higher energy storage also have higher receive sensitivity or higher transmit power, which means that the reliability of the receive or transmit link can be better guaranteed.

[0053] The main data or business types of A-IoT can be at least one of the following:

[0054] Device-originated (DO);

[0055] Device-terminated (DT)

[0056] DO and DT data represent data flows originating from or being transmitted to A-IoT devices. DO data, which originates from A-IoT devices, can be further categorized as follows:

[0057] Device-originated access (DOA), where AIoT devices autonomously initiate data transmission; for example, connecting a large number of various sensors that collect and, when necessary, proactively report information about the environment, devices, and organisms;

[0058] Device-originating–device-terminated triggered (DO-DTT) refers to a data transmission initiated by an AIoT device triggered by a reader / writer device, such as a base station. For example, asset identification, status reporting, and tracking are all downlink triggered reports, where the reader collects data from the tag by triggering an inventory process. Because the data is generated or initiated by the IoT device, this service should be considered a DO service initiated by a reader-side control command.

[0059] In some embodiments, there are two ways to generate an on-off keying (OOK) modulation scheme: one is a multi-carrier OOK signal (MC-OOK) based on an OFDM architecture, and the other is a single-carrier OOK signal.

[0060] For multi-carrier OOK signals based on the OFDM architecture, the design idea is to not change the transmitting architecture of the existing base station. Therefore, appropriate data is sent on the OFDM subcarrier to make it appear as a square wave signal in the time domain.

[0061] Multi-carrier OOK signals based on OFDM architecture can be divided into the following two types:

[0062] OOK-1 and OOK-4.

[0063] OOK-1 primarily uses one OFDM symbol to carry one bit of information. When bit 1 is transmitted, data is transmitted in the frequency domain of the corresponding symbol. When bit 0 is transmitted, nothing is transmitted in the frequency domain of the corresponding symbol. To increase the transmission rate, the subcarrier spacing (SCS) needs to be increased. Frequency domain data can use ZC sequences or quadrature amplitude modulation (QAM) signals to ensure frequency domain signal flatness.

[0064] The OOK-4 waveform is a relatively flexible waveform that can control the transmission rate by adjusting the number of bits transmitted within an OFDM symbol. OOK-4 can be generated in two ways: using Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing (DFT-S-OFDM) or using the Least Squares (LS) method. The DFT-S-OFDM approach first generates the desired waveform in the time domain, with the number of sampling points equal to the number of resource elements (REs) in the wake-up signal (WUS) bandwidth. The frequency domain information is then obtained through a Discrete Fourier Transform (DFT). LS also uses the desired time domain waveform to infer the frequency domain waveform. It primarily optimizes the input frequency domain sequence X using the FFT matrix and the ideal time domain waveform.

[0065] The following, in combination with the accompanying drawings, describes in detail a signal sending method, receiving method, apparatus and device provided by the embodiments of the present application through some embodiments and their application scenarios.

[0066] Please refer to FIG2 , which is a flowchart of a signal sending method provided in an embodiment of the present application. As shown in FIG2 , the method includes the following steps:

[0067] Step 201: The first device generates a target signal, which occupies at least one first time unit; wherein a second time unit includes multiple first time units, and the second time unit includes a time domain resource unit in an orthogonal frequency division multiplexing (OFDM) system.

[0068] The first device may be a terminal or a network-side device.

[0069] In some embodiments, the first device may be a read / write device, such as a handheld or fixed device that reads (and sometimes writes) information from the answering device, or a device that communicates with the answering device or a low-power wake-up receiver device, such as a terminal that communicates with the answering device or a network-side device that communicates with the answering device. Alternatively, the first device may be a device with read / write capabilities, such as a reader / writer. In this embodiment, the target signal may be an AIoT downlink signal.

[0070] In some embodiments, the first device may also be a response device or a low-power wake-up receiver device, and the second device that receives the target signal may be a tag, which may be a radio frequency identification (RFID) tag, which is the common name for RFID. Among them, the radio frequency identification technology used by the tag can be divided into three types: active, passive, and semi-active. Passive tags can also be called passive Internet of Things devices (passive IOT). Or some active tags have the ability to generate active signals, because the energy of the response device can come from the environment, such as ambient radio frequency (RF) energy, thermal energy, wind energy, kinetic energy, etc., and can also be called A-IoT. Therefore, the response device can also be regarded as a terminal, which can be called a terminal device. In this embodiment, the target signal may be an AIOT uplink signal. In addition, the communication method of the response device may be backscatter RF for signal transmission.

[0071] In some implementations, the target signal may be an AIoT signal, specifically an OOK signal.

[0072] The above-mentioned multiple first time units can be multiple basic time units divided within the second time unit. For example, the above-mentioned first time unit can be expressed as Y / X, where Y represents the time length of the above-mentioned second time unit, and X represents the number of first time units included in a second time unit.

[0073] The above-mentioned second time unit can be a time domain resource unit that has been defined by one or more OFDM systems, such as: a frame (10ms), a half frame (5ms), a subframe (1ms), a time slot, or a time unit of an OFDM system agreed upon by the protocol or configured on the network side, that is, the time unit is a time unit of the OFDM system, and the duration of the time unit is agreed upon by the protocol or configured by the network side equipment.

[0074] Step 202: The first device starts sending the target signal from a target first time unit in the second time unit.

[0075] The first device sending the target signal starting from the target first time unit in the second time unit may be sending the target signal with the target first time unit as the starting point within the second time unit.

[0076] The target first time unit may be determined by a protocol, the first device, or the second device. In some embodiments, the first device may start sending the target signal from the target first time unit in the second time unit so that the target signal can be aligned with the boundary of the second time unit.

[0077] In an embodiment of the present application, a first device generates a target signal, and the target signal occupies at least one first time unit; wherein, a second time unit includes multiple first time units, and the second time unit includes a time domain resource unit in an OFDM system; and the first device sends the target signal starting from the target first time unit in the second time unit. In this way, since the second time unit includes the time domain resource unit in the OFDM system, and the second time unit includes multiple first time units, the target signal is sent starting from the target first time unit in the second time unit, which can make it easier to align the target signal with the time domain resource unit in the OFDM system, so that the frame structure design of the OFDM system can be reused as much as possible, reducing the implementation complexity of the device. Specifically, it can be to align the boundaries of the time domain resource units in the OFDM system, so that the frame structure design of the OFDM system can be better reused and the implementation complexity of the device can be reduced.

[0078] As an optional implementation manner, the second time unit includes the following:

[0079] One or more frames;

[0080] One or more half frames;

[0081] one or more subframes;

[0082] one or more time slots;

[0083] The target time unit of the target duration.

[0084] The target duration may be a duration agreed upon in the protocol or a duration configured on the network side, such as Y=0.5 ms, where Y represents the duration of the second time unit.

[0085] It should be noted that, in the embodiments of the present application, the “multiple” may include two.

[0086] In this implementation, the first time unit can be determined with one or more frames / half frames / subframes / time slots as the granularity, which makes the duration of the first time unit more flexible to meet the needs of more services or equipment and improve the compatibility of the system.

[0087] As an optional implementation manner, the second time unit includes X first time units, where X is an integer greater than 1, and X is associated with at least one of the following:

[0088] The number of time domain resource units in the OFDM system included in the second time unit;

[0089] SCS;

[0090] Target parameter, the target parameter is a parameter associated with the SCS, or the target parameter is a parameter agreed upon in the protocol or configured by the network side device.

[0091] The above target parameters are parameters associated with SCS, which can be understood as the mapping relationship between the above target parameters and SCS. For example, the above target parameters are represented by μ, and the value of μ is related to SCS. If μ satisfies 2 μ =SCS / 15kHz, for example, SCS=15kHz, μ=0; SCS=30kHz, μ=1.

[0092] The association of X with at least one of the above items means that X is determined by at least one of the above items, for example:

[0093] In the case where the second time unit is N1 time slots, X=J*N1, where N1 is a positive integer; or

[0094] When the second time unit is N2 subframes, X=J*2 μ *N2, where N2 is a positive integer; or

[0095] When the second time unit is N3 half frames, X=5*J*2 μ *N3, where N3 is a positive integer; or

[0096] When the second time unit is N4 frames, X=10*J*2 μ *N4, where N4 is a positive integer; or

[0097] In the case where the second time unit is a target time unit of N5 target duration, X=Y / 1*J*2 μ *N5, where Y represents the target duration and N5 is a positive integer;

[0098] Wherein, J is a positive integer greater than 1, and μ is the target parameter.

[0099] In some embodiments, the above J may be equal to 15 or 14.

[0100] Take the above example where J is 15:

[0101] In N1 time slots, X = 15*N1;

[0102] In N2 subframes (1ms), X=15*2 μ *N2, μ values ​​are related to SCS, μ satisfies 2 μ =SCS / 15kHz, for example, SCS=15kHz, μ=0, SCS=30kHz, μ=1, such as Y=1ms, SCS=15kHz, X=15; Y=1ms, SCS=30kHz, X=30; Y=1ms, SCS=60kHz, X=60;

[0103] In N3 half frames (5ms), X=5*15*2 μ *N3;

[0104] In N4 frames (10ms), X=10*15*2 μ *N4;

[0105] In N5 target time units, X = Yms / 1ms*15*2 μ *N5.

[0106] Take the above example where J is 14:

[0107] In N1 time slots, X = 14*N1;

[0108] In N2 subframes (1ms), X=14*2 μ *N2, μ values ​​are related to SCS, μ satisfies 2 μ=SCS / 15kHz, for example, SCS=15kHz, μ=0, SCS=30kHz, μ=1, such as Y=1ms, SCS=15kHz, X=14; Y=1ms, SCS=30kHz, X=28; Y=1ms, SCS=60kHz, X=56;

[0109] In N3 half frames (5ms), X=5*14*2 μ *N2;

[0110] In N4 frames (10ms), X=10*14*2 μ *N2;

[0111] In N5 target time units, X = Yms / 1ms*14*2 μ *N5;

[0112] Among them, the above-mentioned Y represents the duration of the above-mentioned second time unit, and the above-mentioned N1, N2, N3, N4, and N5 can be greater than or equal to 1. Optionally, N1, N2, N3, N4, or N5=1.

[0113] In the above implementation, the time length of the first time unit can be flexibly determined based on the number of time domain resource units in the OFDM system included in the second time unit, SCS or at least one of the target parameters to meet the needs of more devices or services.

[0114] As an optional implementation manner, the first time unit is an OFDM symbol including a cyclic prefix (CP); or

[0115] The first time unit is an OFDM symbol that does not include a CP; or

[0116] The first time unit is a plurality of third time units, and the third time unit is a minimum time unit in the communication system.

[0117] The first time unit is an OFDM symbol including a CP, which can be implemented by including two parts, a CP part and a modulation symbol, in each first time unit. In this way, the interference between symbols can be reduced through the CP part.

[0118] The first time unit is an OFDM symbol that does not include a CP, so that more data can be transmitted without adding a CP, thereby improving transmission performance.

[0119] The minimum time unit may be different in different communication systems, and the minimum time unit in each communication system may be determined by a protocol or configured on the network side.

[0120] Since the first time unit is a plurality of third time units, the first time unit can be determined based on the minimum time in the communication system, thereby making it easier for the target signal to be aligned with the time domain resource unit in the OFDM system.

[0121] Optionally, the first time unit is N6 third time units, and the N6 is determined according to at least one of the following:

[0122] The first value,κ,SCS, is the target parameter, the protocol agreement, and the network side device configuration;

[0123] The first value is an integer greater than 1 agreed upon by the protocol or configured by the network side device;

[0124] κ is an integer greater than 1, or κ is a ratio of minimum time units in two different communication systems;

[0125] The target parameter is a parameter associated with the SCS, or the target parameter is a parameter agreed upon in the protocol or configured by the network side device.

[0126] The first value and κ may be values ​​agreed upon in the protocol or configured on the network side. For example, the first value may be 2048, 1024, or 4096, and κ may be 64, 32, or 128. For the target parameters, refer to the corresponding description of the above embodiment and are not described here in detail.

[0127] The above κ is the ratio of the minimum time units in two different communication systems, which can be understood as multiples of the minimum time units of two different communication systems. For example, for 4G and 5G, the above κ is equal to 64, or the above κ represents a multiple of the minimum time units of 5G and 6G.

[0128] In this embodiment, the number of third time units included in the first time unit can be determined based on at least one of the above-mentioned first value, κ, SCS, and target parameters, thereby flexibly configuring the duration of the first time unit.

[0129] In some embodiments, the above N6=2048κ·2 -μ , or N6=2048·2 -μ ,

[0130] Wherein, μ is the target parameter.

[0131] The third time unit is T c or T s For example, the first time unit is 2048κ·2 -μ ·T c , or the first time unit is 2048·2 -μ ·T s, where: T s =1 / (Δf ref ·N f,ref ), T c =1 / (Δf max ·N f )

[0132] Where κ = T s / T c =64,Δf ref =15·10 3 Hz, N f,ref =2048,Δf max =480·10 3 , N f =4096.

[0133] Among them, the first time unit is 2048κ·2 -μ ·T c or 2048·2 -μ ·T s , which can make the target signal more accurately aligned with the boundary of the time domain resource unit of the OFDM system.

[0134] The above-mentioned protocol agreement or network side device configuration may be that the above-mentioned N6 may be directly agreed upon by the protocol or configured by the network side device.

[0135] As an optional implementation, the first time unit includes M1 modulation symbols, where M1 is a positive integer.

[0136] The modulation symbol may include at least one of the following:

[0137] OOK symbol, Amplitude-shift keying (ASK) symbol, Frequency-shift keying (FSK) symbol, Phase-shift Keying (PSK) symbol, Minimum Frequency Shift Keying (MSK) symbol.

[0138] In some implementations, the above M1 can be a protocol agreement or a network configuration, or M1=2 p , where p is an integer greater than or equal to 0.

[0139] In this implementation, since the first time unit includes M1 modulation symbols, it is possible to implement that the first time unit does not carry a CP, so that the first device can send more data to improve transmission performance.

[0140] In one embodiment, the first device may use OFDM generator to generate a target signal (e.g., AIoT downlink signal), specifically, to generate an OOK signal. Since the OOK signal does not require the addition of a CP to eliminate the problem of interference between symbols, a more reasonable design is that the first device uses an OFDM generator to generate a target signal without adding a CP. At this time, the basic time unit of AIoT transmission is the first time unit, for example, an OFDM symbol (excluding the CP), such as 2048κ·2 -μ ·T c , then for different SCSs, the number of time slots in each subframe, the number of time slots in each frame, the number of first resource units in each time slot, and the number of first time units in each subframe are shown in Table 1 below. The first time unit can be specifically shown in Figure 3:

[0141] Table 1:

[0142] Generating the target signal in the above manner can achieve alignment with the time slot boundary of the OFDM signal, and no cyclic prefix is ​​inserted in the signal generation, thereby improving resource utilization. Moreover, the receiving device does not need to process the cyclic prefix when receiving the signal.

[0143] As an optional implementation, the first time unit includes a first part and a second part, the first part is a CP part, the second part is M2 modulation symbols, and M2 is a positive integer.

[0144] The modulation symbol may include at least one of the following:

[0145] OOK symbol, ASK symbol, FSK symbol, PSK symbol, MSK symbol.

[0146] In some implementations, the above M2 can be a protocol agreement or a network configuration, or M2=2 p , wherein p is an integer greater than or equal to 0, and M2 and the above-mentioned M1 may be the same or different.

[0147] In some embodiments, the first portion may be located before the second portion, or the second portion may be located before the first portion.

[0148] In some embodiments, the first part may be the same as the modulation symbol in the first T time length of the second part, or the same as the modulation symbol in the last T time length of the second part.

[0149] The first time unit includes the first part and the second part, so that the CP can be transmitted within the first time unit to reduce interference between time units.

[0150] Optionally, the time length of the second part is equal to a plurality of third time units, and the third time unit is the smallest time unit in the communication system. For example, the second time length of the second part can be 2048κ·2 -μ ·T c or 2048·2 -μ ·T s .

[0151] Optionally, a time length of the first part in the first time unit at a target location within a time domain resource range is greater than a time length of the first part in the first time unit at other locations.

[0152] The above-mentioned time domain resource range may be one or more frames, half frames, subframes or time slots.

[0153] The target location may be a protocol agreement or a network-side configuration. For example, the first time unit of the target location may include at least one of the following:

[0154] The first first time unit within the time domain resource range;

[0155] The index or sequence number within the time domain resource range is 7*2 μ or 7*2 μ +1, the first time unit, the μ is the target parameter, the target parameter is the parameter associated with the SCS, or the target parameter is the parameter agreed upon in the protocol or configured by the network side device.

[0156] In the case where the index or sequence number starts from 0, the first time unit is the index or sequence number 0 or 7*2 μ The first time unit; in the case where the index or serial number starts from 1, the first time unit is the index or serial number 1 or 7*2 μ +1 for the first time unit.

[0157] The time length of the first part within the first time unit of the above-mentioned target position is greater than the time length of the first part within the first time unit of other positions. This may be that the time length of the first part within the first time unit of the target position is a multiple of the time length of the first part within the first time unit of other positions, or the sampling points of the first part within the first time unit of the target position are more than the sampling points of the first part of the first time unit of other positions.

[0158] For example, the first time length T of the first part can be T1 or T2, wherein the time length of the first part in the first time unit of the target position is expressed as T1, and the time length of the first part in the first time unit of other positions is expressed as T2. μ The time length of the first part of the first time unit is T1, and the time length of the first part of the remaining first time units is T2, T1=T2*(1+16 / 144*2 -μ ), or T1 has 16κ more sampling points than T2.

[0159] In the above embodiment, since the time length of the first part in the first time unit of the target position within a time domain resource range is greater than the time length of the first part in the first time unit at other positions, this makes it easier for the target signal to align with the time domain resource unit of the OFDM system.

[0160] In one embodiment, the first time unit (or basic time unit) of AIoT transmission is an OFDM symbol (including CP length). The target signal (such as AIoT signal) generated at this time includes two parts, CP part and modulation symbol, in each first time unit. The length T of the CP part is variable and is determined according to the position k of the first time unit. For example, a subframe (1ms) includes 0, 1, 2, ... L first time units. For l=0 and l=7*2 μ The first time unit T = T1, for l≠0 and l≠7*2 μ The first time unit T = T2, where T1 = T2*(1+16 / 144*2 -μ ), for example, T1=(144κ·2 -μ +16κ)T c ,T2=(144κ·2 -μ )T c The first time unit can be specifically shown in Figure 4, where the green cyclic prefix represents the cyclic prefix of the first time unit at the target position, and the red cyclic prefix represents the cyclic prefix of the first time unit at other positions.

[0161] As shown in Figure 4, the target signal inserted into the cyclic prefix can be aligned with the symbol boundary of the OFDM signal. In addition, if the first device is a network-side device, the target signal with the CP added by the OFDM generator can be reused as much as possible to reduce the complexity of the network-side device.

[0162] As an optional implementation manner, the target first time unit is the first time unit with an index or sequence number N within the second time unit, and the value of N is determined by one of the following methods:

[0163] The protocol stipulates, the first device determines, and the second device determines that the second device is the receiving device of the target signal.

[0164] The first device determination may be a first device configuration or indication, and the second device determination may be a second device configuration or indication.

[0165] The target first time unit may also be referred to as a specific first time unit to start sending. The first time unit with the index or sequence number N may be referred to as the Nth first time unit to start sending of the second time unit.

[0166] Since the target signal is sent from the first time unit with an index or sequence number of N, the second device can start receiving from the first time unit, so that the second device can successfully receive the target signal more reliably. For example: for the above-mentioned case where J is equal to 14 or the first time unit includes a CP part, starting to send from the Nth first time unit can enable the second device to accurately know which CP length to use for detection, so as to improve the transmission reliability of the target signal. For example: if the first device sends 10 OFDM symbols starting from the 1st OFDM symbol and sends 10 OFDM symbols starting from the 3rd OFDM symbol, the total time length is different, and the positions of the symbols with lengths of T1 and T2 are also different, so that the first device can avoid this situation by sending from the target first time unit, so that the second device can receive the target signal more reliably.

[0167] As an optional implementation manner, the information carried by the target signal includes at least one of the following:

[0168] Control information of IoT devices;

[0169] Data information of IoT devices;

[0170] Control information of LP WUR equipment;

[0171] Data information of LP WUR equipment;

[0172] Wake-up instruction information;

[0173] Control information for whether the discontinuous reception DRX duration timer (DRX OnDurationrationTimer) is turned on;

[0174] Control information used to instruct switching of physical downlink control channel (PDCCH) monitoring parameters;

[0175] Synchronization signal.

[0176] The control information of the above-mentioned IoT device or LP WUR device may be control information from the IoT device or LP WUR device or control information for controlling the IoT device or LP WUR device, and the data information of the above-mentioned IoT device or LP WUR device may be data information from the IoT device or LP WUR device or data information sent to the IoT device or LP WUR device.

[0177] The above-mentioned wake-up indication information may be used to instruct the terminal to perform paging PDCCH or paging early indication (PEI) PDCCH.

[0178] The above synchronization signal can be used for IoT devices or terminal devices to synchronize or measure using low-power devices.

[0179] In the above implementation, it is possible to send the above at least one item of information based on the first time unit, thereby improving the transmission performance of the first device.

[0180] In an embodiment of the present application, a first device generates a target signal, wherein the target signal occupies at least one first time unit; wherein a second time unit includes multiple first time units, and the second time unit includes a time domain resource unit in an OFDM system; and the first device transmits the target signal starting from a target first time unit in the second time unit. Thus, since the second time unit includes a time domain resource unit in an OFDM system and the second time unit includes multiple first time units, transmitting the target signal starting from the target first time unit in the second time unit can make it easier to align the target signal with the time domain resource unit in the OFDM system, thereby maximizing the reuse of the OFDM system's frame structure design and reducing the complexity of device implementation.

[0181] Please refer to FIG5 , which is a flowchart of a signal receiving method provided in an embodiment of the present application. As shown in FIG5 , the method includes the following steps:

[0182] Step 501: The second device receives a target signal;

[0183] The target signal occupies at least one first time unit, the second time unit includes multiple first time units, and the second time unit includes a time domain resource unit in the OFDM system.

[0184] The second device may be a terminal or a network-side device.

[0185] The second device receiving the target signal includes at least one of the following:

[0186] The second device receives the target signal according to the first time unit as a target time unit length, where the target time unit length is an actual time length of the first time unit, or the target time unit length is a time unit length determined by the second device based on the length of the second time unit and the number of the first time units in the second time unit;

[0187] The second device receives the target signal according to the starting point of the target signal as the starting point of the second time unit.

[0188] The actual time length of the first time unit may be agreed upon in a protocol or configured by the first device or the second device.

[0189] For example, in the embodiment shown in Figure 2, when J is equal to 15, the above-mentioned target time unit length is the actual first time unit length; or in the embodiment shown in Figure 2, when J is equal to 14, the above-mentioned target time unit length is not the actual first time unit length, but may be a time unit length determined by the second device based on the second time unit length and the number of first time units in the second time unit. This allows the second device to receive the target signal based on a length assumption, thereby reducing the reception complexity of the second device.

[0190] In some implementations, the second device may also start receiving the target signal at the target first time unit in the second time unit, wherein the target first time unit refers to the corresponding description of the embodiment shown in FIG2 and is not described in detail here.

[0191] Optionally, the second time unit includes the following:

[0192] One or more frames;

[0193] One or more half frames;

[0194] one or more subframes;

[0195] one or more time slots;

[0196] The target time unit of the target duration.

[0197] Optionally, the second time unit includes X first time units, where X is an integer greater than 1, and X is associated with at least one of the following:

[0198] The number of time domain resource units in the OFDM system included in the second time unit;

[0199] Subcarrier spacing SCS;

[0200] Target parameter, the target parameter is a parameter associated with the SCS, or the target parameter is a parameter agreed upon in the protocol or configured by the network side device.

[0201] Optionally, when the second time unit is N1 time slots, X=J*N1, where N1 is a positive integer; or

[0202] When the second time unit is N2 subframes, X=J*2 μ *N2, where N2 is a positive integer; or

[0203] When the second time unit is N3 half frames, X=5*J*2 μ *N3, where N3 is a positive integer; or

[0204] When the second time unit is N4 frames, X=10*J*2 μ *N4, where N4 is a positive integer; or

[0205] In the case where the second time unit is a target time unit of N5 target duration, X=Y / 1*J*2 μ *N5, where Y represents the target duration and N5 is a positive integer;

[0206] Wherein, J is a positive integer greater than 1, and μ is the target parameter.

[0207] Optionally, J is equal to 15 or 14; or, 2 μ =SCS / 15kHz.

[0208] Optionally, the first time unit is an OFDM symbol including a cyclic prefix CP; or

[0209] The first time unit is an OFDM symbol that does not include a CP; or

[0210] The first time unit is a plurality of third time units, and the third time unit is a minimum time unit in the communication system.

[0211] Optionally, the first time unit is N6 third time units, and the N6 is determined according to at least one of the following:

[0212] The first value,κ,SCS, is the target parameter, the protocol agreement, and the network side device configuration;

[0213] The first value is an integer greater than 1 agreed upon by the protocol or configured by the network side device;

[0214] κ is an integer greater than 1, or κ is a ratio of minimum time units in two different communication systems;

[0215] The target parameter is a parameter associated with the SCS, or the target parameter is a parameter agreed upon in the protocol or configured by the network side device.

[0216] Optionally, N6 = 2048κ·2 -μ , or N6=2048·2 -μ ,

[0217] Wherein, μ is the target parameter.

[0218] Optionally, the third time unit is T c or T s , the first time unit is 2048κ·2 -μ ·T c , or the first time unit is 2048·2 -μ ·T s , where: T s =1 / (Δf ref ·N f,ref ) ， T c =1 / (Δf max ·N f )

[0219] Where κ = T s / T c =64,Δf ref =15·10 3 Hz, N f,ref =2048,Δf max =480·10 3 , N f =4096.

[0220] Optionally, the first time unit includes M1 modulation symbols, where M1 is a positive integer; or

[0221] The first time unit includes a first part and a second part, the first part is a CP part, the second part is M2 modulation symbols, and M2 is a positive integer.

[0222] Optionally, a time length of the first part in the first time unit at a target location within a time domain resource range is greater than a time length of the first part in the first time unit at other locations.

[0223] In this embodiment, the second device can receive the target signal according to the first part length of the first first time unit of every X first time units being T1 and the first part length of other first time units being T2, wherein T1 is the time length of the first part within the first time unit at the target position, and T2 is the time length of the first part within the first time unit at other positions.

[0224] Optionally, the first time unit of the target location includes at least one of the following:

[0225] The first first time unit within the time domain resource range;

[0226] The index or sequence number within the time domain resource range is 7*2 μ or 7*2 μ +1, the first time unit, the μ is the target parameter, the target parameter is the parameter associated with the SCS, or the target parameter is the parameter agreed upon in the protocol or configured by the network side device.

[0227] Optionally, the time length of the second part is equal to multiple third time units, and the third time unit is the minimum time unit in the communication system.

[0228] Optionally, the information carried by the target signal includes at least one of the following:

[0229] Control information of IoT devices;

[0230] Data information of IoT devices;

[0231] Control information of LP WUR equipment;

[0232] Data information of LP WUR equipment;

[0233] Wake-up instruction information;

[0234] Control information used to indicate whether the discontinuous reception (DRX) duration timer is turned on;

[0235] Control information used to instruct switching of physical downlink control channel PDCCH monitoring parameters;

[0236] Synchronization signal.

[0237] It should be noted that this embodiment is an implementation of the second device corresponding to the embodiment shown in Figure 2. Its specific implementation can refer to the relevant description of the embodiment shown in Figure 2. To avoid repeated description, this embodiment will not be repeated.

[0238] The signal sending method provided in the embodiment of the present application can be executed by a signal sending device. In the embodiment of the present application, the signal sending device provided in the embodiment of the present application is described by taking the signal sending method executed by the signal sending device as an example.

[0239] The signal receiving method provided in the embodiment of the present application can be executed by a signal receiving device. In the embodiment of the present application, the signal receiving device performing the signal receiving method is taken as an example to illustrate the signal receiving device provided in the embodiment of the present application.

[0240] Please refer to FIG6 , which is a structural diagram of a signal sending device provided in an embodiment of the present application. As shown in FIG6 , the signal sending device 600 includes:

[0241] A generating module 601 is configured to generate a target signal, where the target signal occupies at least one first time unit; wherein a second time unit includes a plurality of the first time units, and the second time unit includes a time domain resource unit in an orthogonal frequency division multiplexing (OFDM) system;

[0242] The sending module 602 is configured to start sending the target signal from a target first time unit in the second time unit.

[0243] Optionally, the second time unit includes the following:

[0244] One or more frames;

[0245] One or more half frames;

[0246] one or more subframes;

[0247] one or more time slots;

[0248] The target time unit of the target duration.

[0249] Optionally, the second time unit includes X first time units, where X is an integer greater than 1, and X is associated with at least one of the following:

[0250] The number of time domain resource units in the OFDM system included in the second time unit;

[0251] Subcarrier spacing SCS;

[0252] Target parameter, the target parameter is a parameter associated with the SCS, or the target parameter is a parameter agreed upon in the protocol or configured by the network side device.

[0253] Optionally, when the second time unit is N1 time slots, X=J*N1, where N1 is a positive integer; or

[0254] When the second time unit is N2 subframes, X=J*2 μ *N2, where N2 is a positive integer; or

[0255] When the second time unit is N3 half frames, X=5*J*2 μ *N3, where N3 is a positive integer; or

[0256] When the second time unit is N4 frames, X=10*J*2 μ *N4, where N4 is a positive integer; or

[0257] In the case where the second time unit is a target time unit of N5 target duration, X=Y / 1*J*2 μ *N5, where Y represents the target duration and N5 is a positive integer;

[0258] Wherein, J is a positive integer greater than 1, and μ is the target parameter.

[0259] Optionally, J is equal to 15 or 14; or, 2 μ =SCS / 15kHz.

[0260] Optionally, the first time unit is an OFDM symbol including a cyclic prefix CP; or

[0261] The first time unit is an OFDM symbol that does not include a CP; or

[0262] The first time unit is a plurality of third time units, and the third time unit is a minimum time unit in the communication system.

[0263] Optionally, the first time unit is N6 third time units, and the N6 is determined according to at least one of the following:

[0264] The first value,κ,SCS, is the target parameter, the protocol agreement, and the network side device configuration;

[0265] The first value is an integer greater than 1 agreed upon by the protocol or configured by the network side device;

[0266] κ is an integer greater than 1, or κ is a ratio of minimum time units in two different communication systems;

[0267] The target parameter is a parameter associated with the SCS, or the target parameter is a parameter agreed upon in the protocol or configured by the network side device.

[0268] Optionally, N6 = 2048κ·2 -μ , or N6=2048·2-μ ,

[0269] Wherein, μ is the target parameter.

[0270] Optionally, the third time unit is T c or T s , the first time unit is 2048κ·2 -μ ·T c , or the first time unit is 2048·2 -μ ·T s , where: T s =1 / (Δf ref ·N f,ref ), T c =1 / (Δf max ·N f )

[0271] Where κ = T s / T c =64,Δf ref =15·10 3 Hz, N f,ref =2048,Δf max =480·10 3 , N f =4096.

[0272] Optionally, the first time unit includes M1 modulation symbols, where M1 is a positive integer; or

[0273] The first time unit includes a first part and a second part, the first part is a CP part, the second part is M2 modulation symbols, and M2 is a positive integer.

[0274] Optionally, a time length of the first part in the first time unit at a target location within a time domain resource range is greater than a time length of the first part in the first time unit at other locations.

[0275] Optionally, the first time unit of the target location includes at least one of the following:

[0276] The first first time unit within the time domain resource range;

[0277] The index or sequence number within the time domain resource range is 7*2 μ or 7*2 μ +1, the first time unit, the μ is the target parameter, the target parameter is the parameter associated with the SCS, or the target parameter is the parameter agreed upon in the protocol or configured by the network side device.

[0278] Optionally, the time length of the second part is equal to multiple third time units, and the third time unit is the minimum time unit in the communication system.

[0279] Optionally, the target first time unit is the first time unit with an index or sequence number N within the second time unit, and the value of N is determined by one of the following methods:

[0280] The protocol stipulates, the first device determines, and the second device determines that the second device is the receiving device of the target signal.

[0281] Optionally, the information carried by the target signal includes at least one of the following:

[0282] Control information of IoT devices;

[0283] Data information of IoT devices;

[0284] Control information of LP WUR equipment;

[0285] Data information of LP WUR equipment;

[0286] Wake-up instruction information;

[0287] Control information used to indicate whether the discontinuous reception (DRX) duration timer is turned on;

[0288] Control information used to instruct switching of physical downlink control channel PDCCH monitoring parameters;

[0289] Synchronization signal.

[0290] The above-mentioned signal sending device can make it easier for signals to be aligned with time domain resource units in an OFDM system.

[0291] In the embodiments of the present application, the signal transmitting device may be an electronic device, such as an electronic device having an operating system, or a component in an electronic device, such as an integrated circuit or chip. For example, the electronic device may be a terminal, or may be a device other than a terminal. For example, the terminal may include but is not limited to the types of terminals listed in the embodiments of the present application, and the other devices may be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0292] The signal sending device provided in the embodiment of the present application can implement the various processes implemented in the method embodiment shown in Figure 2 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0293] Please refer to FIG. 7 , which is a structural diagram of a signal receiving device provided in an embodiment of the present application. As shown in FIG. 7 , the signal receiving device 700 includes:

[0294] Receiving module 701, used to receive target signals;

[0295] The target signal occupies at least one first time unit, the second time unit includes multiple first time units, and the second time unit includes a time domain resource unit in an orthogonal frequency division multiplexing (OFDM) system.

[0296] Optionally, the receiving module 701 is configured to perform at least one of the following:

[0297] receiving the target signal according to the first time unit being a target time unit length, where the target time unit length is an actual time length of the first time unit, or the target time unit length is a time unit length determined by the second device based on the length of the second time unit and the number of the first time units within the second time unit;

[0298] The target signal is received with the starting point of the target signal being the starting point of the second time unit.

[0299] Optionally, the second time unit includes the following:

[0300] One or more frames;

[0301] One or more half frames;

[0302] one or more subframes;

[0303] one or more time slots;

[0304] The target time unit of the target duration.

[0305] Optionally, the second time unit includes X first time units, where X is an integer greater than 1, and X is associated with at least one of the following:

[0306] The number of time domain resource units in the OFDM system included in the second time unit;

[0307] Subcarrier spacing SCS;

[0308] Target parameter, the target parameter is a parameter associated with the SCS, or the target parameter is a parameter agreed upon in the protocol or configured by the network side device.

[0309] Optionally, when the second time unit is N1 time slots, X=J*N1, where N1 is a positive integer; or

[0310] When the second time unit is N2 subframes, X=J*2 μ *N2, where N2 is a positive integer; or

[0311] When the second time unit is N3 half frames, X=5*J*2 μ *N3, where N3 is a positive integer; or

[0312] When the second time unit is N4 frames, X=10*J*2 μ *N4, where N4 is a positive integer; or

[0313] In the case where the second time unit is a target time unit of N5 target duration, X=Y / 1*J*2 μ *N5, where Y represents the target duration and N5 is a positive integer;

[0314] Wherein, J is a positive integer greater than 1, and μ is the target parameter.

[0315] Optionally, J is equal to 15 or 14; or, 2 μ =SCS / 15kHz.

[0316] Optionally, the first time unit is an OFDM symbol including a cyclic prefix CP; or

[0317] The first time unit is an OFDM symbol that does not include a CP; or

[0318] The first time unit is a plurality of third time units, and the third time unit is a minimum time unit in the communication system.

[0319] Optionally, the first time unit is N6 third time units, and the N6 is determined according to at least one of the following:

[0320] The first value,κ,SCS, is the target parameter, the protocol agreement, and the network side device configuration;

[0321] The first value is an integer greater than 1 agreed upon by the protocol or configured by the network side device;

[0322] κ is an integer greater than 1, or κ is a ratio of minimum time units in two different communication systems;

[0323] The target parameter is a parameter associated with the SCS, or the target parameter is a parameter agreed upon in the protocol or configured by the network side device.

[0324] Optionally, N6 = 2048κ·2 -μ , or N6=2048·2-μ ,

[0325] Wherein, μ is the target parameter.

[0326] Optionally, the third time unit is T c or T s , the first time unit is 2048κ·2 -μ ·T c , or the first time unit is 2048·2 -μ ·T s , where: T s =1 / (Δf ref ·N f,ref ), T c =1 / (Δf max ·N f )

[0327] Where κ = T s / T c =64,Δf ref =15·10 3 Hz, N f,ref =2048,Δf max =480·10 3 , N f =4096.

[0328] Optionally, the first time unit includes M1 modulation symbols, where M1 is a positive integer; or

[0329] The first time unit includes a first part and a second part, the first part is a CP part, the second part is M2 modulation symbols, and M2 is a positive integer.

[0330] Optionally, a time length of the first part in the first time unit at a target location within a time domain resource range is greater than a time length of the first part in the first time unit at other locations.

[0331] Optionally, the first time unit of the target location includes at least one of the following:

[0332] The first first time unit within the time domain resource range;

[0333] The index or sequence number within the time domain resource range is 7*2 μ or 7*2 μ +1, the first time unit, the μ is the target parameter, the target parameter is the parameter associated with the SCS, or the target parameter is the parameter agreed upon in the protocol or configured by the network side device.

[0334] Optionally, the time length of the second part is equal to multiple third time units, and the third time unit is the minimum time unit in the communication system.

[0335] Optionally, the information carried by the target signal includes at least one of the following:

[0336] Control information of IoT devices;

[0337] Data information of IoT devices;

[0338] Control information of LP WUR equipment;

[0339] Data information of LP WUR equipment;

[0340] Wake-up instruction information;

[0341] Control information used to indicate whether the discontinuous reception (DRX) duration timer is turned on;

[0342] Control information used to instruct switching of physical downlink control channel PDCCH monitoring parameters;

[0343] Synchronization signal.

[0344] The above-mentioned signal receiving device can make it easier for signals to be aligned with time domain resource units in an OFDM system.

[0345] The signal receiving device in the embodiment of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or a network-side device.

[0346] The signal receiving device provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in Figure 5 and achieve the same technical effect. To avoid repetition, it will not be described here.

[0347] Optionally, as shown in Figure 8, an embodiment of the present application also provides a communication device 800, including a processor 801 and a memory 802, and the memory 802 stores programs or instructions that can be run on the processor 801. For example, when the communication device 800 is a first device, the program or instruction is executed by the processor 801 to implement the various steps of the above-mentioned signal sending method embodiment, and can achieve the same technical effect; when the communication device 800 is a second device, the program or instruction is executed by the processor 801 to implement the various steps of the above-mentioned signal receiving method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0348] The embodiment of the present application also provides a communication device, including a processor and a communication interface, wherein the processor is used to generate a target signal, the target signal occupies at least one first time unit; wherein the second time unit includes multiple first time units, and the second time unit includes a time domain resource unit in an OFDM system; the communication interface is used to send the target signal starting from the target first time unit in the second time unit; this communication device embodiment corresponds to the above-mentioned signal sending method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to the communication device embodiment, and can achieve the same technical effect. Alternatively, the communication interface is used to receive a target signal, the target signal occupies at least one first time unit, the second time unit includes multiple first time units, and the second time unit includes a time domain resource unit in an orthogonal frequency division multiplexing OFDM system. This communication device embodiment corresponds to the above-mentioned signal receiving method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to the communication device embodiment, and can achieve the same technical effect.

[0349] Specifically, Figure 9 is a schematic diagram of the hardware structure of a device for implementing an embodiment of the present application. The device can be a first device or a second device.

[0350] The device 900 includes but is not limited to: a radio frequency unit 901, a network module 902, an audio output unit 903, an input unit 904, a sensor 905, a display unit 906, a user input unit 907, an interface unit 908, a memory 909 and at least some of the components of a processor 910.

[0351] Those skilled in the art will appreciate that device 900 may also include a power source (such as a battery) to power various components. The power source may be logically connected to processor 910 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The device structure shown in FIG9 does not limit the device. The device may include more or fewer components than shown, or may combine certain components or arrange the components differently, which will not be described in detail here.

[0352] It should be understood that in an embodiment of the present application, the input unit 904 may include a graphics processing unit (GPU) 9041 and a microphone 9042, and the graphics processor 9041 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 906 may include a display panel 9061, and the display panel 9061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 907 includes a touch panel 9071 and at least one of other input devices 9072. The touch panel 9071 is also called a touch screen. The touch panel 9071 may include two parts: a touch detection device and a touch controller. Other input devices 9072 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.

[0353] In the embodiment of the present application, after receiving downlink data from a network-side device, the RF unit 901 may transmit the data to the processor 910 for processing. Furthermore, the RF unit 901 may send uplink data to the network-side device. Typically, the RF unit 901 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0354] The memory 909 can be used to store software programs or instructions and various data. The memory 909 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.), etc. In addition, the memory 909 may include a volatile memory or a non-volatile memory, or the memory 909 may include both volatile and non-volatile memories. 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. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DRRAM). The memory 909 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0355] Processor 910 may include one or more processing units. Optionally, processor 910 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 processor 910.

[0356] In this embodiment, the above device is a first device, and the first device is specifically used as a terminal for example:

[0357] Processor 910 is configured to generate a target signal, where the target signal occupies at least one first time unit; wherein a second time unit includes multiple first time units, and the second time unit includes a time domain resource unit in an orthogonal frequency division multiplexing (OFDM) system;

[0358] The radio frequency unit 901 is configured to send the target signal starting from a target first time unit in the second time unit.

[0359] Optionally, the second time unit includes the following:

[0360] One or more frames;

[0361] One or more half frames;

[0362] one or more subframes;

[0363] one or more time slots;

[0364] The target time unit of the target duration.

[0365] Optionally, the second time unit includes X first time units, where X is an integer greater than 1, and X is associated with at least one of the following:

[0366] The number of time domain resource units in the OFDM system included in the second time unit;

[0367] Subcarrier spacing SCS;

[0368] Target parameters.

[0369] Optionally, when the second time unit is N1 time slots, X=J*N1, where N1 is a positive integer; or

[0370] When the second time unit is N2 subframes, X=J*2 μ *N2, where N2 is a positive integer; or

[0371] When the second time unit is N3 half frames, X=5*J*2 μ *N3, where N3 is a positive integer; or

[0372] When the second time unit is N4 frames, X=10*J*2 μ *N4, where N4 is a positive integer; or

[0373] In the case where the second time unit is a target time unit of N5 target duration, X=Y / 1*J*2 μ *N5, where Y represents the target duration and N5 is a positive integer;

[0374] Wherein, J is a positive integer greater than 1, and μ is the target parameter.

[0375] Optionally, J is equal to 15 or 14; or, 2μ =SCS / 15kHz.

[0376] Optionally, the first time unit is an OFDM symbol including a cyclic prefix CP; or

[0377] The first time unit is an OFDM symbol that does not include a CP; or

[0378] The first time unit is a plurality of third time units, and the third time unit is a minimum time unit in the communication system.

[0379] Optionally, the first time unit is N6 third time units, and the N6 is determined according to at least one of the following:

[0380] The first value,κ,SCS, is the target parameter, the protocol agreement, and the network side device configuration;

[0381] The first value is an integer greater than 1 agreed upon by the protocol or configured by the network side device;

[0382] κ is an integer greater than 1, or κ is a ratio of minimum time units in two different communication systems;

[0383] The target parameter is a parameter associated with the SCS, or the target parameter is a parameter agreed upon in the protocol or configured by the network side device.

[0384] Optionally, N6 = 2048κ·2 -μ , or N6=2048·2 -μ ,

[0385] Wherein, μ is the target parameter.

[0386] Optionally, the third time unit is T c or T s , the first time unit is 2048κ·2 -μ ·T c , or the first time unit is 2048·2 -μ ·T s , where: T s =1 / (Δf ref ·N f,ref ), T c =1 / (Δf max ·N f )

[0387] Where κ = T s / T c =64,Δf ref =15·10 3 Hz, N f,ref=2048,Δf max =480·10 3 , N f =4096.

[0388] Optionally, the first time unit includes M1 modulation symbols, where M1 is a positive integer; or

[0389] The first time unit includes a first part and a second part, the first part is a CP part, the second part is M2 modulation symbols, and M2 is a positive integer.

[0390] Optionally, a time length of the first part in the first time unit at a target location within a time domain resource range is greater than a time length of the first part in the first time unit at other locations.

[0391] Optionally, the first time unit of the target location includes at least one of the following:

[0392] The first first time unit within the time domain resource range;

[0393] The index or sequence number within the time domain resource range is 7*2 μ or 7*2 μ +1 is the first time unit, and the μ is the target parameter.

[0394] Optionally, the time length of the second part is equal to multiple third time units, and the third time unit is the minimum time unit in the communication system.

[0395] Optionally, the target first time unit is the first time unit with an index or sequence number N within the second time unit, and the value of N is determined by one of the following methods:

[0396] The protocol stipulates, the first device determines, and the second device determines that the second device is the receiving device of the target signal.

[0397] Optionally, the information carried by the target signal includes at least one of the following:

[0398] Control information of IoT devices;

[0399] Data information of IoT devices;

[0400] Control information of LP WUR equipment;

[0401] Data information of LP WUR equipment;

[0402] Wake-up instruction information;

[0403] Control information used to indicate whether the discontinuous reception (DRX) duration timer is turned on;

[0404] Control information used to instruct switching of physical downlink control channel PDCCH monitoring parameters;

[0405] Synchronization signal.

[0406] The above device can make it easier for signals to be aligned with time domain resource units in an OFDM system.

[0407] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the above-mentioned data transmission method and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0408] It should be noted that the above-mentioned device can also implement the steps in the method shown in FIG5 , or can implement the method executed by each module shown in FIG7 .

[0409] The present application also provides an embodiment of a 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 method embodiment shown in Figure 2 or Figure 5. This network-side device embodiment corresponds to the aforementioned signal transmission method or signal reception method embodiment, and each implementation process and implementation method of the aforementioned method embodiment can be applied to this device embodiment and can achieve the same technical effects.

[0410] An embodiment of the present application also provides a device, including a processor and a communication interface, wherein the communication interface is used to receive a target signal; wherein the target signal occupies at least one first time unit, a second time unit includes multiple first time units, and the second time unit includes a time domain resource unit in an OFDM system.

[0411] Specifically, an embodiment of the present application further provides a device. The device can be a first device or a second device. As shown in Figure 10, the device 1000 includes: an antenna 101, a radio frequency device 102, a baseband device 103, a processor 104, and a memory 105. The antenna 101 is connected to the radio frequency device 102. In the uplink direction, the radio frequency device 102 receives information via the antenna 101 and sends the received information to the baseband device 103 for processing. In the downlink direction, the baseband device 103 processes the information to be transmitted and sends it to the radio frequency device 102. The radio frequency device 102 processes the received information and then sends it through the antenna 101.

[0412] The signal receiving method in the above embodiment may be implemented in the baseband device 103 , which includes a baseband processor.

[0413] The baseband device 103 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 10, one of which is, for example, a baseband processor, which is connected to the memory 105 through a bus interface to call the program in the memory 105 and execute the network device operations shown in the above method embodiment.

[0414] The device may further include a network interface 106 , which is, for example, a Common Public Radio Interface (CPRI).

[0415] Specifically, the device 1000 of the embodiment of the present application also includes: instructions or programs stored in the memory 105 and executable on the processor 104. The processor 104 calls the instructions or programs in the memory 105 to execute the methods executed by the modules shown in FIG. 7 and achieve the same technical effect. To avoid repetition, they will not be elaborated here.

[0416] In this embodiment, the above device is the second device, and the second device is specifically used as a network-side device for example.

[0417] The radio frequency device 102 is used to receive a target signal;

[0418] The target signal occupies at least one first time unit, the second time unit includes multiple first time units, and the second time unit includes a time domain resource unit in the OFDM system.

[0419] Optionally, the receiving a target signal includes at least one of the following:

[0420] receiving the target signal according to the first time unit being a target time unit length, where the target time unit length is an actual time length of the first time unit, or the target time unit length is a time unit length determined by the second device based on the length of the second time unit and the number of the first time units within the second time unit;

[0421] The target signal is received with the starting point of the target signal being the starting point of the second time unit.

[0422] The actual time length of the first time unit may be agreed upon in a protocol or configured by the first device or the second device.

[0423] Optionally, the second time unit includes the following:

[0424] One or more frames;

[0425] One or more half frames;

[0426] one or more subframes;

[0427] one or more time slots;

[0428] The target time unit of the target duration.

[0429] Optionally, the second time unit includes X first time units, where X is an integer greater than 1, and X is associated with at least one of the following:

[0430] The number of time domain resource units in the OFDM system included in the second time unit;

[0431] Subcarrier spacing SCS;

[0432] Target parameters.

[0433] Optionally, when the second time unit is N1 time slots, X=J*N1, where N1 is a positive integer; or

[0434] When the second time unit is N2 subframes, X=J*2 μ *N2, where N2 is a positive integer; or

[0435] When the second time unit is N3 half frames, X=5*J*2 μ *N3, where N3 is a positive integer; or

[0436] When the second time unit is N4 frames, X=10*J*2 μ *N4, where N4 is a positive integer; or

[0437] In the case where the second time unit is a target time unit of N5 target duration, X=Y / 1*J*2 μ *N5, where Y represents the target duration and N5 is a positive integer;

[0438] Wherein, J is a positive integer greater than 1, and μ is the target parameter.

[0439] Optionally, J is equal to 15 or 14; or, 2 μ =SCS / 15kHz.

[0440] Optionally, the first time unit is an OFDM symbol including a cyclic prefix CP; or

[0441] The first time unit is an OFDM symbol that does not include a CP; or

[0442] The first time unit is a plurality of third time units, and the third time unit is a minimum time unit in the communication system.

[0443] Optionally, the first time unit is N6 third time units, and the N6 is determined according to at least one of the following:

[0444] The first value,κ,SCS, is the target parameter, the protocol agreement, and the network side device configuration;

[0445] The first value is an integer greater than 1 agreed upon by the protocol or configured by the network side device;

[0446] κ is an integer greater than 1, or κ is a ratio of minimum time units in two different communication systems;

[0447] The target parameter is a parameter associated with the SCS, or the target parameter is a parameter agreed upon in the protocol or configured by the network side device.

[0448] Optionally, N6 = 2048κ·2 -μ , or N6=2048·2 -μ ,

[0449] Wherein, μ is the target parameter.

[0450] Optionally, the third time unit is T c or T s , the first time unit is 2048κ·2 -μ ·T c , or the first time unit is 2048·2 -μ ·T s , where: T s =1 / (Δf ref ·N f,ref ), T c =1 / (Δf max ·N f )

[0451] Where κ = T s / T c =64,Δf ref =15·10 3 Hz, N f,ref =2048,Δf max =480·10 3 , N f =4096.

[0452] Optionally, the first time unit includes M1 modulation symbols, where M1 is a positive integer; or

[0453] The first time unit includes a first part and a second part, the first part is a CP part, the second part is M2 modulation symbols, and M2 is a positive integer.

[0454] Optionally, a time length of the first part in the first time unit at a target location within a time domain resource range is greater than a time length of the first part in the first time unit at other locations.

[0455] Optionally, the first time unit of the target location includes at least one of the following:

[0456] The first first time unit within the time domain resource range;

[0457] The index or sequence number within the time domain resource range is 7*2 μ or 7*2 μ +1 is the first time unit, and the μ is the target parameter.

[0458] Optionally, the time length of the second part is equal to multiple third time units, and the third time unit is the minimum time unit in the communication system.

[0459] Optionally, the information carried by the target signal includes at least one of the following:

[0460] Control information of IoT devices;

[0461] Data information of IoT devices;

[0462] Control information of LP WUR equipment;

[0463] Data information of LP WUR equipment;

[0464] Wake-up instruction information;

[0465] Control information used to indicate whether the discontinuous reception (DRX) duration timer is turned on;

[0466] Control information used to instruct switching of physical downlink control channel PDCCH monitoring parameters;

[0467] Synchronization signal.

[0468] The above device can make it easier for signals to be aligned with time domain resource units in an OFDM system.

[0469] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the above-mentioned method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0470] It should be noted that the above-mentioned device can also implement the steps in the method shown in FIG. 2 , or can implement the method executed by each module shown in FIG. 6 .

[0471] 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 sending method or signal receiving method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0472] 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.

[0473] 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 sending method or signal receiving method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0474] 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.

[0475] 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 sending method or signal receiving method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0476] An embodiment of the present application further provides a wireless communication system, including: a first device and a second device, wherein the first device can be used to execute the steps of the signal sending method provided in the embodiment of the present application, and the second device can be used to execute the steps of the signal receiving method provided in the embodiment of the present application.

[0477] 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.

[0478] 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.

[0479] 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 first device generates a target signal, where the target signal occupies at least one first time unit; wherein a second time unit includes a plurality of the first time units, and the second time unit includes a time domain resource unit in an orthogonal frequency division multiplexing (OFDM) system; The first device sends the target signal starting from a target first time unit in the second time unit.

2. The method according to claim 1, wherein The second time unit includes the following: One or more frames; One or more half frames; one or more subframes; one or more time slots; The target time unit of the target duration.

3. The method according to claim 1 or 2, wherein The second time unit includes X first time units, where X is an integer greater than 1, and X is associated with at least one of the following: The number of time domain resource units in the OFDM system included in the second time unit; Subcarrier spacing SCS; Target parameter, the target parameter is a parameter associated with the SCS, or the target parameter is a parameter agreed upon in the protocol or configured by the network side device.

4. The method according to claim 3, wherein: In the case where the second time unit is N1 time slots, X=J*N1, where N1 is a positive integer; or When the second time unit is N2 subframes, X=J*2 μ *N2, where N2 is a positive integer; or When the second time unit is N3 half frames, X=5*J*2 μ *N3, where N3 is a positive integer; or When the second time unit is N4 frames, X=10*J*2 μ *N4, where N4 is a positive integer; or In the case where the second time unit is a target time unit of N5 target duration, X=Y / 1*J*2 μ *N5, where Y represents the target duration and N5 is a positive integer; Wherein, J is a positive integer greater than 1, and μ is the target parameter.

5. The method according to claim 4, wherein: Said J is equal to 15 or 14; or, 2 μ =SCS / 15kHz.

6. The method according to claim 1 or 2, wherein: The first time unit is an OFDM symbol including a cyclic prefix CP; or The first time unit is an OFDM symbol that does not include a CP; or The first time unit is a plurality of third time units, and the third time unit is a minimum time unit in the communication system.

7. The method according to claim 6, wherein: The first time unit is N6 third time units, where N6 is determined according to at least one of the following: The first value,κ,SCS, is the target parameter, the protocol agreement, and the network side device configuration; The first value is an integer greater than 1 agreed upon by the protocol or configured by the network side device; κ is an integer greater than 1, or κ is a ratio of minimum time units in two different communication systems; The target parameter is a parameter associated with the SCS, or the target parameter is a parameter agreed upon in the protocol or configured by the network side device.

8. The method of claim 7, wherein: N6=2048κ·2 -μ , or N6=2048·2 -μ , Wherein, μ is the target parameter.

9. The method of claim 8, wherein: The third time unit is T c or T s , the first time unit is 2048κ·2 -μ ·T c , or the first time unit is 2048·2 -μ ·T s , where: T s =1 / (Δf ref ·N f,ref ), T c =1 / (Δf max ·N f ) where κ = T s / T c = 64, Δf ref = 15·10 3 Hz, N f,ref = 2048, Δf max = 480·10 3 , N f = 4096.

10. The method according to any one of claims 1 to 9, wherein The first time unit includes M1 modulation symbols, where M1 is a positive integer; or The first time unit includes a first part and a second part, the first part is a CP part, the second part is M2 modulation symbols, and M2 is a positive integer.

11. The method according to claim 10, wherein: Within a time domain resource range, a time length of the first part in the first time unit at a target location is greater than a time length of the first part in the first time unit at other locations.

12. The method of claim 11, wherein: The first time unit of the target location includes at least one of the following: The first first time unit within the time domain resource range; The index or sequence number within the time domain resource range is 7*2 μ or 7*2 μ +1, the first time unit, the μ is the target parameter, the target parameter is the parameter associated with the SCS, or the target parameter is the parameter agreed upon in the protocol or configured by the network side device.

13. The method according to any one of claims 10 to 12, wherein The time length of the second part is equal to a plurality of third time units, and the third time unit is a minimum time unit in the communication system.

14. The method according to any one of claims 1 to 13, wherein The target first time unit is the first time unit with an index or sequence number N within the second time unit, where the value of N is determined by one of the following methods: The protocol stipulates, the first device determines, and the second device determines that the second device is the receiving device of the target signal.

15. The method according to any one of claims 1 to 14, wherein The information carried by the target signal includes at least one of the following: Control information of IoT devices; Data information of IoT devices; Control information of low power wake-up receiver LP WUR device; Data information of LP WUR equipment; Wake-up instruction information; Control information used to indicate whether the discontinuous reception (DRX) duration timer is turned on; Control information used to instruct switching of physical downlink control channel PDCCH monitoring parameters; Synchronization signal.

16. A signal receiving method, comprising: The second device receives the target signal; The target signal occupies at least one first time unit, the second time unit includes multiple first time units, and the second time unit includes a time domain resource unit in an orthogonal frequency division multiplexing (OFDM) system.

17. The method of claim 16, wherein: The receiving of the target signal by the second device includes at least one of the following: The second device receives the target signal according to the first time unit as a target time unit length, where the target time unit length is an actual time length of the first time unit, or the target time unit length is a time unit length determined by the second device based on the length of the second time unit and the number of the first time units in the second time unit; The second device receives the target signal according to the starting point of the target signal as the starting point of the second time unit.

18. The method according to claim 16 or 17, wherein The second time unit includes the following: One or more frames; One or more half frames; one or more subframes; one or more time slots; The target time unit of the target duration.

19. The method according to any one of claims 16 to 18, wherein The second time unit includes X first time units, where X is an integer greater than 1, and X is associated with at least one of the following: The number of time domain resource units in the OFDM system included in the second time unit; Subcarrier spacing SCS; Target parameter, the target parameter is a parameter associated with the SCS, or the target parameter is a parameter agreed upon in the protocol or configured by the network side device.

20. The method of any one of claims 16 to 18, wherein The first time unit is an OFDM symbol including a cyclic prefix CP; or The first time unit is an OFDM symbol that does not include a CP; or The first time unit is a plurality of third time units, and the third time unit is a minimum time unit in the communication system.

21. The method according to any one of claims 16 to 20, wherein The first time unit includes M1 modulation symbols, where M1 is a positive integer; or The first time unit includes a first part and a second part, the first part is a CP part, the second part is M2 modulation symbols, and M2 is a positive integer.

22. The method of claim 21, wherein: Within a time domain resource range, a time length of the first part in the first time unit at a target location is greater than a time length of the first part in the first time unit at other locations.

23. The method of any one of claims 16 to 22, wherein The information carried by the target signal includes at least one of the following: Control information of IoT devices; Data information of IoT devices; Control information of low power wake-up receiver LP WUR device; Data information of LP WUR equipment; Wake-up instruction information; Control information used to indicate whether the discontinuous reception (DRX) duration timer is turned on; Control information used to instruct switching of physical downlink control channel PDCCH monitoring parameters; Synchronization signal.

24. A signal transmitting device, comprising: A generating module, configured to generate a target signal, wherein the target signal occupies at least one first time unit; wherein a second time unit includes a plurality of the first time units, and the second time unit includes a time domain resource unit in an orthogonal frequency division multiplexing (OFDM) system; A sending module is configured to send the target signal starting from a target first time unit in the second time unit.

25. The apparatus of claim 24, wherein: The second time unit includes the following: One or more frames; One or more half frames; one or more subframes; one or more time slots; The target time unit of the target duration.

26. The apparatus of claim 24 or 25, wherein: The second time unit includes X first time units, where X is an integer greater than 1, and X is associated with at least one of the following: The number of time domain resource units in the OFDM system included in the second time unit; Subcarrier spacing SCS; Target parameters.

27. The device of any one of claims 24 to 26, wherein The first time unit includes M1 modulation symbols, where M1 is a positive integer; or The first time unit includes a first part and a second part, the first part is a CP part, the second part is M2 modulation symbols, and M2 is a positive integer.

28. A signal receiving device, comprising: A receiving module, used for receiving a target signal; The target signal occupies at least one first time unit, the second time unit includes multiple first time units, and the second time unit includes a time domain resource unit in an orthogonal frequency division multiplexing (OFDM) system.

29. The apparatus of claim 28, wherein The receiving module is used for at least one of the following: receiving the target signal according to the first time unit being a target time unit length, where the target time unit length is an actual time length of the first time unit, or a time unit length determined by the second device based on the length of the second time unit and the number of the first time units within the second time unit; The target signal is received with the starting point of the target signal being the starting point of the second time unit.

30. The apparatus of claim 28 or 29, wherein The second time unit includes the following: One or more frames; One or more half frames; one or more subframes; one or more time slots; The target time unit of the target duration.

31. A communication 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 sending method according to any one of claims 1 to 15 are implemented, or when the program or instruction is executed by the processor, the steps of the signal receiving method according to any one of claims 16 to 23 are implemented.

32. A readable storage medium storing a program or instruction, wherein the program or instruction, when executed by a processor, implements the steps of the signal sending method according to any one of claims 1 to 15, or implements the steps of the signal receiving method according to any one of claims 16 to 23.

33. A computer program product, wherein the computer program product is stored in a storage medium and is executed by at least one processor to implement the steps of the signal sending method according to any one of claims 1 to 15, or to implement the steps of the signal receiving method according to any one of claims 16 to 23.

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