Wireless communication method and device

Abstract

An embodiment of the present application provides a wireless communication method and device capable of generating first and / or second symbols in a target signal, the wireless communication method including: a first communication device transmitting a target signal, the target signal being a signal carrying information by signal amplitude, the target signal including n first symbols and / or m second symbols, the first symbols being at a first level and the second symbols being at a second level, the first level being higher than the second level, m and n being positive integers, the n first symbols being generated based on at least one of a number of subcarriers, spacing between non-zero allocated subcarriers, subcarrier spacing, and frequency bandwidth, and / or the m second symbols being generated based on at least one of a number of subcarriers, spacing between non-zero allocated subcarriers, subcarrier spacing, and frequency bandwidth.

Description

[Technical Field]

[0001] TECHNICAL FIELD Embodiments of the present application relate to the field of communications, and more particularly to wireless communication methods and devices. [Background technology]

[0002] Currently, in order to achieve energy saving, a receiver with extremely low power consumption and complexity is introduced to receive a signal carrying information by signal amplitude, and how to specifically generate a signal carrying information by signal amplitude is a problem that needs to be solved. Summary of the Invention

[0003] In an embodiment of the present application, a wireless communication method and device are provided, in which a first communication device can generate a first symbol and / or a second symbol in a target signal based on at least one of the number of subcarriers, the spacing between non-zero allocated subcarriers, the subcarrier spacing, and the frequency bandwidth so as to adapt to different coverage scenarios, thereby generating first symbols and / or second symbols of various lengths and realizing more flexible and various data transfer rates.

[0004] According to a first aspect, there is provided a method of wireless communication, the method including: a first communication device transmitting a target signal; the target signal is a signal that carries information by signal amplitude, the target signal includes n first symbols and / or m second symbols, the first symbols are at a first level, the second symbols are at a second level, the first level is higher than the second level, and m and n are both positive integers; The n first symbols are generated based on at least one of the number of subcarriers, the spacing between non-zero allocated subcarriers, the subcarrier spacing, and the frequency bandwidth, and / or the m second symbols are generated based on at least one of the number of subcarriers, the spacing between non-zero allocated subcarriers, the subcarrier spacing, and the frequency bandwidth.

[0005] According to a second aspect, there is provided a method of wireless communication, the method including receiving, by a second communication device, a target signal; the target signal is a signal that carries information by signal amplitude, the target signal includes n first symbols and / or m second symbols, the first symbols are at a first level, the second symbols are at a second level, the first level is higher than the second level, and m and n are both positive integers; The n first symbols are generated based on at least one of the number of subcarriers, the spacing between non-zero allocated subcarriers, the subcarrier spacing, and the frequency bandwidth, and / or the m second symbols are generated based on at least one of the number of subcarriers, the spacing between non-zero allocated subcarriers, the subcarrier spacing, and the frequency bandwidth.

[0006] According to a third aspect, there is provided a communications device, the communications device being a first communications device, the communications device being used to perform the method of the first aspect, specifically the communications device including functional modules for performing the method of the first aspect.

[0007] According to a fourth aspect, there is provided a communications device, the communications device being a second communications device, the communications device being used to perform the method of the second aspect, specifically the communications device including functional modules for performing the method of the second aspect.

[0008] According to a fifth aspect, there is provided a communications device, the communications device being a first communications device, the communications device including a processing processor and a memory, the memory being used to store a computer program, the processing processor being used to call and execute the computer program stored in the memory, such that the communications device performs the method of the first aspect.

[0009] According to a sixth aspect, there is provided a communications device, the communications device being a second communications device, the communications device including a processing processor and a memory, the memory being used to store a computer program, the processing processor being used to call and execute the computer program stored in the memory, such that the communications device performs the method of the second aspect.

[0010] According to a seventh aspect, there is provided an apparatus, the apparatus being used to implement a method according to any one of the first to second aspects above.

[0011] Specifically, the apparatus includes a processing processor, which is used to call and execute a computer program from a memory so that a device to which the apparatus is attached executes the method according to any one of the first and second aspects above.

[0012] According to an eighth aspect, there is provided a computer-readable storage medium for storing a computer program, the computer program causing a computer to perform a method according to any one of the first to second aspects above.

[0013] According to a ninth aspect there is provided a computer program product comprising computer program instructions for causing a computer to perform a method according to any one of the first to second aspects above.

[0014] According to a tenth aspect, there is provided a computer program which, when run on a computer, causes the computer to carry out a method according to any one of the first to second aspects above.

[0015] According to the above technical solution (invention), the first communication device can generate the first symbol and / or the second symbol in the target signal based on at least one of the number of subcarriers, the spacing between non-zero allocated subcarriers, the subcarrier spacing, and the frequency bandwidth, thereby generating the first symbol and / or the second symbol of various lengths, and realizing more flexible and diverse data transfer rates, thereby adapting to different coverage scenarios. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a schematic diagram of a communication system architecture to which an embodiment of the present application applies; [Figure 2] 1 is a block diagram of a receiver system based on the terminal provided herein; [Figure 3] 1 is a schematic diagram of a WUR PPDU frame provided in the present application; [Figure 4] FIG. 1 is a schematic diagram of a WUR synchronization sequence provided in the present application. [Figure 5] FIG. 1 is a schematic diagram of a WUR-data portion provided in the present application carrying user information. [Figure 6] 1 is a schematic diagram of an MC-OOK signal generated by multi-carrier provided in the present application; [Figure 7] FIG. 1 is a block diagram of the On-WG system provided in the present application. [Figure 8] 1 is a schematic diagram of a repeating waveform provided in the present application, with a period of 32 sampling points. [Figure 9] FIG. 1 is a schematic diagram of a 2 μs long On symbol provided in the present application. [Figure 10] 1 is a schematic flowchart of a wireless communication method provided according to an embodiment of the present application; [Figure 11] FIG. 1 is a schematic diagram of generating an On symbol provided in accordance with an embodiment of the present application. [Figure 12] FIG. 10 is a schematic diagram of generating another On symbol provided in accordance with an embodiment of the present application. [Figure 13] FIG. 2 is a schematic diagram of generating On and Off symbols provided according to an embodiment of the present application; [Figure 14] 3 is a schematic flow chart of generating On and Off symbols in the time domain provided according to an embodiment of the present application; [Figure 15] 10 is a schematic diagram of a masking window provided in accordance with an embodiment of the present application used to generate 1010. FIG. [Figure 16] 1 is a schematic diagram showing that the input of the Masking or OOK modulation step provided according to an embodiment of the present application is an information bit after encoding. [Figure 17] FIG. 10 is a schematic diagram of generating other On and Off symbols provided according to an embodiment of the present application. [Figure 18] 1 is a schematic block diagram of a communication device provided according to an embodiment of the present application; [Figure 19] FIG. 2 is a schematic block diagram of another communication device provided in accordance with an embodiment of the present application. [Figure 20] FIG. 2 is a schematic block diagram of another communication device provided in accordance with an embodiment of the present application. [Figure 21] 1 is a schematic block diagram of an apparatus provided in accordance with an embodiment of the present application; [Figure 22] 1 is a schematic block diagram of a communication system provided in an embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0017] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, but it is clear that the described embodiments are only some of the embodiments of the present application and do not represent all of the embodiments. All other embodiments that can be obtained by those skilled in the art without creative efforts fall within the scope of protection of the present application.

[0018] The technical solutions of the embodiments of the present application may be applied to, for example, a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a Long Term Evolution (LTE) system, an Advanced Long Term Evolution (LTE-A) system, a New Radio (NR) system, an evolution of an NR system, an LTE-based access to unlicensed spectrum (LTE-U) system, an NR-based access to unlicensed spectrum (NR-U) system, a Non-Terrestrial Networks (NTN) system, a Universal Mobile Telecommunication System (UMTS), a Wireless Local Area Network (WLAN), an Internet of Things (IoT), a Mobile Radio Network (MNR ... The present invention can be applied to various communication systems such as Internet of Things (IoT), Wireless Fidelity (WiFi), 5th-Generation (5G) systems, 6th-Generation (6G) systems, or other communication systems.

[0019] Typically, traditional communication systems support a limited number of connections that are easy to implement. However, with the development of communication technology, mobile communication systems now support not only traditional communication but also other communication types, such as device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, sidelink (SL) communication, and vehicle-to-everything (V2X) communication, and the embodiments of the present application can also be applied to these communication systems.

[0020] In some embodiments, the communication system in the embodiments of the present application can be applied to a carrier aggregation (CA) scenario, can be applied to a dual connectivity (DC) scenario, can be applied to a standalone (SA) network construction scenario, or can be applied to a non-standalone (NSA) network construction scenario.

[0021] In some embodiments, the communication system of the present application may be applied to an unlicensed spectrum, which may be considered a shared spectrum, or the communication system of the present application may be applied to a licensed spectrum, which may be considered a non-shared spectrum.

[0022] In some embodiments, the communication system in the embodiments of the present application can be applied to the FR1 frequency band (corresponding to the frequency band range of 410 MHz to 7.125 GHz), and can also be applied to the FR2 frequency band (corresponding to the frequency band range of 24.25 GHz to 52.6 GHz), and can also be applied to new frequency bands (e.g., corresponding to the 52.6 GHz to 571 GHz frequency band range, or higher frequency bands corresponding to the 71 GHz to 114.25 GHz frequency band range).

[0023] The embodiments of the present application are described in conjunction with a zero-power consumption device, which may also be referred to as a user device (User Equipment, UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user equipment.

[0024] The zero-power device may be a station (STA) or a non-access point station (non-AP STA) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a next-generation communication system (e.g., a terminal device in an NR network), or a terminal device in a future-evolved Public Land Mobile Network (PLMN) network.

[0025] In embodiments of the present application, the zero power consumption device may be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted, on water (e.g., ships, etc.), or in the air (e.g., airplanes, balloons, satellites, etc.).

[0026] In embodiments of the present application, the zero-power consumption device may be a mobile phone, a tablet, a computer with wireless transmission and reception capabilities, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city or a wireless terminal device in a smart home, an in-vehicle communication device, a wireless communication chip / application specific integrated circuit (ASIC) / system-level chip (SoC), etc.

[0027] In the embodiments of the present application, the zero-power device may also be a wearable device, which is an example and not limiting. A wearable device, also known as a wearable smart device, is a general term for wearable devices developed by applying wearable technology to everyday clothing and implementing intelligent design, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. A wearable device is not simply a hardware device; it also achieves powerful functions through software support, data interaction, and cloud interaction. In a broad sense, a wearable smart device may be fully functional, large in size, and capable of achieving full or partial functions independent of a smartphone, such as a smart watch or smart glasses. It may also focus on a specific type of application function and require use in conjunction with another device (e.g., a smartphone), such as various smart bands and smart jewelry that monitor vital signs.

[0028] In an embodiment of the present application, the communication device may be a device for communicating with a zero-power device, and the communication device may be an access point (AP) in a WLAN, a base station (BTS) in a GSM or CDMA, a base station (NodeB, NB) in a WCDMA, an evolved base station (eNB or eNodeB) in an LTE, a relay station or an access point, an in-vehicle device, a wearable device, a network device, a base station (gNB) or a transmission / reception point (TRP) in an NR network, a network device in a future evolved PLMN network, or a network device in an NTN network.

[0029] In embodiments of the present application, the communication device may have mobile characteristics. For example, the communication device may be a mobile device, by way of example and not limitation. In some embodiments, the communication device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. In some embodiments, the network device may also be a base station installed at a location such as land or water.

[0030] In an embodiment of the present application, a communication device can provide service to a cell, and a zero-power device communicates with a network device through transmission resources (e.g., frequency domain resources or spectrum resources) used by the cell. The cell may be a cell corresponding to a network device (e.g., a base station), and the cell may belong to a macro base station or a base station corresponding to a small cell. The small cell here may include a metro cell, a micro cell, a pico cell, a femto cell, etc. These small cells have characteristics of small coverage range and low transmission power, and are suitable for providing high-speed data transmission services.

[0031] 1 exemplarily shows a communication system 100 applied to an embodiment of the present application. The communication system 100 may include a communication device 110, which may be a device that communicates with a zero-power-consumption device 120 (communication terminal, also called a terminal). The communication device 110 may provide communication coverage to a specific geographic area and may communicate with the zero-power-consumption device located within the coverage area.

[0032] FIG. 1 exemplarily illustrates one communication device and two zero-power devices; in some embodiments, the communication system 100 may include multiple communication devices, and the coverage range of each communication device may include other numbers of zero-power devices; embodiments of the present application are not limited thereto.

[0033] In some embodiments, the communication system 100 may further include other network entities, such as a network controller, a mobility management entity, etc., although embodiments of the present application are not limited thereto.

[0034] It can be understood that a device having a communication function in a network / system of an embodiment of the present application can be called a communication device. Taking the communication system 100 shown in Figure 1 as an example, the communication device can include a communication device 110 having a communication function and a zero-power consumption device 120. The communication device 110 and the zero-power consumption device 120 can be the specific devices described above, and detailed descriptions are omitted here. The communication device can also include other devices in the communication system 100, such as other network entities such as a network controller, a mobility management entity, etc., and the embodiment of the present application is not limited thereto.

[0035] As can be understood, the terms "system" and "network" in this application can often be used interchangeably in this application. The term "and / or" in this application is used to describe the relationship between related objects and indicates that three types of relationships can exist. For example, "A and / or B" can indicate three cases: only A exists, A and B exist simultaneously, or only B exists. In addition, the symbol " / " in this application usually indicates that there is an "or" relationship between the related objects before and after it.

[0036] The terms used in the embodiments section of this application are intended only to describe specific examples of this application and are not intended to limit this application. The terms "first," "second," "third," "fourth," etc. in the specification, claims, and drawings of this application are intended to distinguish different objects and not to describe a particular order. The terms "include," "have," and variations thereof are intended to cover a non-exclusive inclusion.

[0037] It is understandable that the "indication" referred to in the embodiments of the present application may be a direct indication, an indirect indication, or an indication of an association relationship. For example, A indicating B can represent that A directly indicates B, for example, B can be obtained by A, and A indirectly indicates B, or, for example, A indicates C, and B can be obtained by C, and there is an association relationship between A and B.

[0038] In describing the embodiments of the present application, the term "corresponding" may mean that there is a direct or indirect corresponding relationship between the two, or that there is an association relationship between the two, or may be a relationship such as "indicate" and "indicated," or "arrange" and "arranged."

[0039] In the embodiments of the present application, "predefined" or "preconfigured" can be realized by pre-storing a corresponding code or table in a device (including, for example, a terminal device and a network device), or by other methods that can instruct related information, and the present application is not limited to this specific implementation method. For example, "predefined" may mean being defined in a protocol.

[0040] In the embodiments of the present application, the above "protocol" may refer to a standard protocol in the communication field, for example, an evolution of the current LTE protocol, NR protocol, Wi-Fi protocol, or a protocol related to other communication systems, and the present application is not limited to the type of protocol.

[0041] As the application of 5G in the industry increases, the types and application scenarios of connected objects are becoming more and more diverse, placing higher demands on the price and power consumption of communication terminals. The application of battery-free, low-cost passive Internet of Things devices will become a key technology for the cellular Internet of Things, enriching the types and number of 5G network-linked terminals and truly realizing the Internet of All Things. Here, passive Internet of Things devices are based on current zero-power devices (such as Radio Frequency Identification (RFID) technology) and can be expanded and applied to the cellular Internet of Things.

[0042] To facilitate a better understanding of the present embodiments, a classification of zero power consumption devices according to the present invention will be described.

[0043] Alternatively, based on the energy origin and usage of the zero power devices, the zero power devices can be divided into passive zero power devices, semi-passive zero power devices and active zero power devices.

[0044] 1) Passive zero power consumption devices

[0045] The zero-power device does not need to have a built-in battery. When the zero-power device approaches a network device (e.g., a reader / writer in a Radio Frequency Identification (RFID) system), the zero-power device is within the near-field range formed by the radiation of the network device's antenna. Therefore, the zero-power device antenna generates an induced current through electromagnetic induction, and the induced current drives the low-power chip circuit of the zero-power device. The zero-power device performs operations such as demodulation of the forward link signal (downlink, the link from the network device to the zero-power device) and signal modulation of the reverse link (uplink, the link from the zero-power device to the network device). For the backscatter link, the zero-power device transmits signals using a backscatter realization method.

[0046] As can be seen, a passive zero power device does not require a built-in battery to operate either the forward link or the reverse link, making it a truly zero power device.

[0047] Passive zero-power devices do not require batteries, and both the radio frequency circuitry and the baseband circuitry are very simple, eliminating the need for equipment such as low-noise amplifiers (LNAs), power amplifiers (PAs), crystal oscillators, and analog-to-digital converters (ADCs). This offers many advantages, such as small size, light weight, very low cost, and long life.

[0048] 2) Semi-passive zero power consumption device

[0049] The semi-passive zero-power terminal itself does not have a conventional battery, but can harvest radio wave energy using a radio frequency (RF) power harvesting module, or can harvest energy using solar energy, light energy, thermal energy, or kinetic energy harvesting modules, and simultaneously store the harvested energy in an energy storage unit (e.g., a capacitor). After the energy storage unit obtains energy, it can drive the low-power chip circuit of the zero-power device, which performs operations such as demodulation of the forward link signal and modulation of the reverse link signal. For the backscatter link, the zero-power device transmits signals using a backscattering method.

[0050] As can be seen, a semi-passive zero-power device does not require a built-in battery to operate either the forward link or the reverse link, and uses energy stored in a capacitor during operation. However, the energy comes from the radio wave energy harvested by the power harvesting module, making it a truly zero-power terminal.

[0051] Semi-passive zero-power devices inherit many of the advantages of passive zero-power devices, and therefore have many advantages such as small size, light weight, very low cost, and long life.

[0052] 3) Active zero power consumption devices

[0053] In some scenarios, the zero-power device used may be an active zero-power device. This type of terminal may have a built-in battery (such as a regular battery, e.g., a dry cell battery, a rechargeable lithium battery, etc.). The battery is used to power the low-power chip circuit of the zero-power terminal. It performs operations such as demodulation of the forward link signal and modulation of the reverse link signal. However, for the backscatter link, the zero-power device transmits the signal using a backscattering method. Therefore, the zero-power consumption of this type of terminal is realized by the method using backscattering, without requiring the terminal's own power for reverse link signal transmission. Although the active zero-power device uses a battery, its power consumption is extremely low due to ultra-low power communication technology, which can significantly improve the operating life of the battery compared to conventional technologies.

[0054] Active zero-power devices incorporate a battery to power the RFID chip, increasing the tag's read and write distance and improving communication reliability, and are therefore applicable to some scenarios with higher requirements for communication distance, read latency, etc.

[0055] To make the present embodiment easier to understand, the present embodiment will be described in terms of an ambient energy-based device.

[0056] In NR and Wi-Fi systems, battery-free and low-cost devices can support low-cost mass deployment and maintenance-free Internet of Things (IoT) devices. Current standards are studying how to support ambient power (AMP)-based IoT devices in NR and Wi-Fi systems. Ambient power-based IoT devices are called ambient IoT or AMP IoT devices, and the energy required for their operation comes from collecting ambient energy, which may be from radio signals, solar energy, thermal energy, etc. This type of device is similar to a passive or semi-passive device in zero-power communication.

[0057] To make the embodiments of the present application easier to understand, a terminal energy saving based on a wake-up receiver according to the present application will be described.

[0058] To further reduce the power consumption of a UE, a wake-up receiver is introduced to receive a wake-up signal. The wake-up receiver has the characteristics of extremely low cost, extremely low complexity, and extremely low power consumption, and mainly receives the wake-up signal using a method based on envelope detection. Therefore, the wake-up signal (WUS) received by the wake-up receiver differs from the signal carried on the Physical Downlink Control Channel (PDCCH) in terms of modulation method, waveform, etc. The wake-up signal is mainly an envelope signal that performs amplitude shift keying (ASK) modulation on a carrier signal and is received by the wake-up receiver. The wake-up receiver can be used as an independent receiver of the terminal to wake up the terminal's primary receiver.

[0059] A system block diagram of a terminal-based receiver is shown in Figure 2. When the wake-up receiver receives a wake-up signal, the primary receiver of the terminal can turn on the primary receiver based on the wake-up information carried in the wake-up signal. Otherwise, the primary receiver of the UE can be in an off state.

[0060] To facilitate understanding of the embodiments of the present invention, a wake-up signal according to the present invention will be described.

[0061] 802.11ba technology employs a wake-up radio (WUR) signal to achieve device energy saving. A WUR AP notifies a WUR non-AP STA of its energy saving operation using a WUR wake-up frame. The wake-up frame is carried in a WUR physical layer protocol data unit (PPDU) frame. A WUR PPDU frame includes three parts: a legacy preamble, a WUR synchronization (WUR-Sync), and a WUR data (WUR-Data). As shown in Figure 3, the legacy preamble is used to protect the WUR-Sync and WUR-Data parts, while the non-WUR part is reserved for compatibility. It uses traditional orthogonal frequency-division multiplexing (OFDM) modulation and a 20 MHz bandwidth. The WUR-Sync is used to assist in identifying and demodulating the WUR-data portion, and the WUR-Data portion is used to carry the WUR physical layer service data unit (PSDU).

[0062] The WUR-Sync and WUR-Data sections use on-off keying (OOK) modulation and a 4MHz bandwidth. OOK modulation is used to modulate the amplitude of a carrier signal to non-zero and zero values, corresponding to on and off, respectively, to represent information bits. OOK is also known as binary amplitude keying (2ASK). As shown in Figure 4, the WUR-Sync section carries a synchronization sequence that is repeated twice, with bit 1 in the sequence modulated to on and bit 0 modulated to off.

[0063] Here, the synchronization sequence adopts a predefined sequence W including 32 bits, and different sequences indicate the data rates adopted by different WUR-data portions, where the synchronization sequence corresponding to the WUR low data rate (LDR) is: W = [1 0 1 0 0 1 0 0 1 0 1 1 1 0 1 1 0 0 0 1 0 1 1 1 0 0 1 1 1 0 0 0] is.

[0064] The synchronization sequence for WUR high data rate (HDR) is: W = [0 1 0 1 1 0 1 1 0 1 0 0 0 1 0 0 1 1 1 0 1 0 0 0 1 1 0 0 0 1 1 1] is.

[0065] Each bit in the WUR-Sync part is mapped to one 2 μs long Multi-carrier OOK (MC-OOK) symbol by OOK modulation, and the MC-OOK symbol may be an On symbol or an Off symbol, where the On symbol may be generated by an On beam generator (Wave Generator, WG).

[0066] The WUR-data portion carries user information, as shown in FIG. 5, and after encoding the user information, adopts OOK modulation to form an MC-OOK symbol of a corresponding length.

[0067] Here, the lengths of the MC-OOK symbols corresponding to the WUR LDR and WUR HDR are 4 μs and 2 μs, respectively. The above-mentioned OOK signal is generated by multi-carrier (MC), and is therefore called an MC-OOK signal. The MC-OOK signal can be generated using current multi-carrier modulation (e.g., OFDM modulation), maintaining good compatibility with current OFDM systems and reducing the transmitter complexity required to implement the WUR signal. Figure 6 is a schematic diagram of an MC-OOK signal generated by multi-carrier modulation. The waveform obtained by mapping corresponding amplitude values ​​to multiple subcarriers in the frequency domain and converting them into a time-domain signal using an inverse discrete Fourier transform (IDFT) approximates the waveform generated by ASK modulation, where bit 1 is represented by a high level of the signal and bit 0 is represented by a low level of the signal.

[0068] To facilitate understanding of the embodiments of the present application, the problem that the present application aims to solve will be explained.

[0069] The WUR signal in 802.11ba technology generates an on waveform using 13 subcarriers centered on a 64-point IDFT within a 20 MHz bandwidth. For LDR, the OOK symbol length is 4 μs, the same as the OFDM symbol length, and includes a 3.2 μs IDFT time length and a 0.8 μs guard interval (GI). Of the 13 subcarriers, 12 subcarriers with subcarrier index k = (-6, -5, ... -1, 1, 2, ... 6) are assigned non-zero values, while the remaining subcarriers are unassigned. For HDR, the OOK symbol length is 2 μs, including a 1.6 μs IDFT time length and a 0.4 μs GI. Of the 13 subcarriers, 6 subcarriers with subcarrier index k = (-6, -4, -2, 2, 4, 6) are assigned non-zero values, while the remaining subcarriers are unassigned. This corresponds to performing an extraction operation at intervals of one subcarrier in the frequency domain, undergoing an IDFT transformation, and repeating the operation twice with a period of 1.6 μs in the corresponding time domain waveform.

[0070] Specifically, a 2 μs-long On symbol is generated by the On-WG. Figure 7 shows a block diagram of the On-WG system, which includes the following steps: input of non-zero subcarrier allocation coefficients, subcarrier allocation, IDFT processing, selection of the first half of the IDFT output, symbol randomization (to smooth the sampling points), and GI insertion. In Figure 7, after 13 subcarriers are allocated, an IDFT transform is performed to generate 64 sampling points. Next, the first 32 sampling points are selected. As shown in Figure 8, six subcarriers are extracted and allocated to the 13 subcarriers, and after IDFT transformation, a repetitive waveform with a period of 32 sampling points is formed. As shown in Figure 9, the last eight sampling points of the first 32 sampling points are copied before the 32 sampling points as GIs, generating 40 sampling points to represent a 2 μs-long On symbol.

[0071] Specifically, a 2 μs long Off symbol is generated by the Off-WG, and the energy of the corresponding 32 sampling points is zero.

[0072] In 802.11ba technology, On symbols and Off symbols are generated by On-WG and Off-WG, respectively, and the OOK symbol length is only 4 μs and 2 μs, corresponding to two data rates. For data transmission in AMP devices or WUR signals in NR systems, more flexible and diverse data rates are required to adapt to different coverage scenarios. Therefore, a more flexible OOK signal generation method that can generate various OOK symbol lengths is required.

[0073] Based on the above problem, this application proposes a signal generation scheme in which a first communication device can generate a first symbol and / or a second symbol in a target signal based on at least one of the number of subcarriers, the spacing between non-zero allocated subcarriers, the subcarrier spacing, and the frequency bandwidth so as to adapt to different coverage scenarios, thereby generating first symbols and / or second symbols of various lengths and realizing more flexible and diverse data transfer rates.

[0074] In order to facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The following related arts can be arbitrarily combined with the technical solutions of the embodiments of the present application as alternative solutions, and all of them fall within the scope of protection of the embodiments of the present application. The embodiments of the present application include at least some of the following content:

[0075] FIG. 10 is a schematic flowchart of a wireless communication method 200 according to an embodiment of the present application. As shown in FIG. 10, the wireless communication method 200 may include at least some of the following contents:

[0076] S210: A first communication device transmits a target signal to a second communication device, where the target signal is a signal that carries information through signal amplitude, and the target signal includes n first symbols and / or m second symbols, where the first symbols are at a first level and the second symbols are at a second level, the first level is higher than the second level, and m and n are both positive integers, where the n first symbols are generated based on at least one of a number of subcarriers, a spacing between non-zero allocated subcarriers, a subcarrier spacing, and a frequency bandwidth, and / or the m second symbols are generated based on at least one of a number of subcarriers, a spacing between non-zero allocated subcarriers, a subcarrier spacing, and a frequency bandwidth.

[0077] S220, the second communication device receives the target signal transmitted from the first communication device.

[0078] In an embodiment of the present application, the first communication device can generate the first symbol and / or the second symbol in the target signal based on at least one of the number of subcarriers, the spacing between non-zero allocated subcarriers, the subcarrier spacing, and the frequency bandwidth so as to adapt to different coverage scenarios, thereby generating the first symbol and / or the second symbol of various lengths and realizing more flexible and diverse data transfer rates.

[0079] In the present embodiment, the first symbol (e.g., On symbol) may be a high-level portion of the target signal, and the amplitude value of the first symbol may be a specific value or a value within a range of possible values. The second symbol (e.g., Off symbol) may be a low-level portion of the target signal, and the amplitude value of the second symbol may be a specific value or a value within a range of possible values.

[0080] In some embodiments, the difference between the amplitude of the first symbol and the amplitude of the second symbol is greater than a first threshold, and / or the ratio between the amplitude of the first symbol and the amplitude of the second symbol is greater than a second threshold, so that the modulation depth between high-level and low-level symbols in the target signal meets demodulation needs.

[0081] In some embodiments, the first communication device is an ambient power-generating base station, or the first communication device is an ambient power-generating access point, or the first communication device is an ambient power-generating relay device.

[0082] In some embodiments, the second communication device is an ambient power generating terminal, or an ambient power generating station, or a zero power consumption device, which may also be a battery-free terminal, a maintenance-free terminal, etc.

[0083] Specifically, the second communication device (e.g., an ambient power generation terminal, a zero power consumption device, or an ambient power generation station) can obtain energy required for communication by collecting environmental energy (e.g., light energy, thermal energy, wind energy, radio frequency energy, mechanical energy, kinetic energy, etc.), thereby supporting a communication method using active transmission. The first communication device (e.g., an ambient power generation base station, an ambient power generation access point, or an ambient power generation relay device) may be a device that communicates with the second communication device, or may be a normal device (e.g., a gNB, an AP, or a relay terminal), or may be a device that, like the second communication device, can obtain energy required for communication by collecting environmental energy (e.g., light energy, thermal energy, wind energy, radio frequency energy, mechanical energy, kinetic energy, etc.), thereby supporting a communication method using active transmission.

[0084] Specifically, for example, the first communication device is an ambient power generation base station, and the second communication device is an ambient power generation terminal, or the second communication device is a zero power consumption device, and the second communication device may also be a battery-free terminal, a maintenance-free terminal, etc.

[0085] Also, for example, the first communication device may be an ambient power-generating access point and the second communication device may be an ambient power-generating station, or the second communication device may be a zero-power consumption device, and the second communication device may also be a battery-free terminal, a maintenance-free terminal, etc.

[0086] Also, for example, the first communication device may be an ambient power generation relay device, and the second communication device may be an ambient power generation terminal, or the second communication device may be a zero power consumption device, and the second communication device may also be a battery-free terminal, a maintenance-free terminal, etc.

[0087] Ambient power-generating devices (e.g., ambient power-generating terminals, ambient power-generating stations, ambient power-generating base stations, ambient power-generating access points, ambient power-generating relay devices, etc.) according to embodiments of the present application may also be referred to as "ambient power-enabled IoT devices" or "ambient power-generating IoT devices." Specifically, an ambient power-generating IoT device refers to an IoT device that uses various types of ambient energy (e.g., various types of ambient energy such as radio frequency energy, light energy, solar energy, thermal energy, and mechanical energy). An ambient IoT device may have no energy storage capability or may have very limited energy storage capability (e.g., a capacitor with a capacitance of tens of microfarads (uF)).

[0088] In the embodiments of this application, an ambient power-generating station (AMP STA) refers to a STA device in Wi-Fi technology that derives its operating energy from the external environment. An ambient power-generating access point (AMP AP) may be an AP device in Wi-Fi technology that provides communication or energy to an AMP STA. Accordingly, in 3GPP technology, the AMP-type device may be an AMP terminal device or an AMP network device. The device according to this application is not limited to an AMP device; other types of zero-power devices may also adopt the embodiments of this application. The term "AMP device" or "zero-power device" does not limit the source and use of energy, and the energy required for its operation may be derived from the external environment (e.g., radio frequency energy, light energy, pressure energy, etc.). Alternatively, the energy required for its operation may be derived from the terminal's own power supply, in which case it may be a low-power terminal. The definition of a zero-power terminal or low-power terminal mainly includes features such as low complexity, support for ambient energy supply, and new waveforms.

[0089] In some embodiments, the target signal is an On-Off Keying (OOK) signal or a Multi-carrier On-Off Keying (MC-OOK) signal. Specifically, for example, the signal received by the second communication device (e.g., an ambient power generation terminal, a zero-power consumption device, or an ambient power generation station) is mainly a signal modulated based on Amplitude Shift Keying (ASK) (e.g., an OOK signal). The signal received by this type of device (a device with extremely low power consumption and complexity) may be not only a wake-up signal for waking up, but also a signal for transmitting user data.

[0090] In the present embodiment, the target signal is essentially demodulated by detecting the high and low levels of the signal using envelope detection at the receiving end, whereby the On symbol in the OOK signal corresponds to a high level signal and the Off symbol corresponds to a low level signal.

[0091] In some embodiments, when the target signal includes at least the n first symbols, the first symbols include a GI portion and a symbol portion, wherein the length of the symbol portion of the first symbol is related to at least one of the number of subcarriers and the spacing between non-zero allocated subcarriers.

[0092] Specifically, the length of the GI portion of the first symbol is fixed, that is, in this embodiment, the length of the symbol portion of the first symbol can be determined based on the number of subcarriers and / or the spacing between non-zero allocated subcarriers, and the number of subcarriers and / or the spacing between non-zero allocated subcarriers can be adjusted to generate first symbols of various lengths.

[0093] In some embodiments, when the length of the first symbol is related to at least the spacing between non-zero allocated subcarriers, the associated relationship between the length of the first symbol and the spacing between non-zero allocated subcarriers is stipulated by a protocol, or the associated relationship between the length of the first symbol and the spacing between non-zero allocated subcarriers is configured by a network device.

[0094] In some embodiments, when the length of the first symbol is associated with at least the number of subcarriers, the association relationship between the length of the first symbol and the number of subcarriers is stipulated by a protocol, or the association relationship between the length of the first symbol and the number of subcarriers is configured by a network device.

[0095] In some embodiments, all first symbols corresponding to a first multicarrier modulation symbol are generated based on a first portion of the first multicarrier modulation symbol. Optionally, the first multicarrier modulation symbol is a multicarrier modulation symbol output by a waveform generator associated with the first symbol after IDFT processing. Optionally, the first multicarrier modulation symbol may be an OFDM symbol.

[0096] In some embodiments, the n first symbols included in the target signal may be some or all of the first symbols corresponding to the first multicarrier modulation symbol.

[0097] In some embodiments, the first portion is a 1 / W portion of the first multicarrier modulation symbol, where possible values ​​of W and the spacing between non-zero allocated subcarriers are related, and W is a positive integer. Optionally, W first symbols can be generated in the first multicarrier modulation symbol.

[0098] Specifically, for example, in the 2.4 GHz frequency band, the subcarrier spacing is 312.5 kHz. The multicarrier modulation symbol output after IDFT processing corresponding to 20 MHz can include 64 sampling points, and the first part can include 64 / W sampling points.

[0099] In some embodiments, the first portion is a leading 1 / W portion of the first multicarrier modulation symbol, or the first portion is a trailing 1 / W portion of the first multicarrier modulation symbol.

[0100] Specifically, for example, in the 2.4 GHz frequency band, the subcarrier spacing is 312.5 kHz. The multicarrier modulation symbol output after IDFT processing corresponding to 20 MHz may include 64 sampling points, and the first part may be the first 64 / W sampling points, or the first part may be the last 64 / W sampling points.

[0101] In some embodiments, the first portion comprises a portion of the IDFT symbol length between 1 / W*(i-1) * IDFT symbol length and 1 / W*i * IDFT symbol length, where i is a positive integer, and

number

[0102] In some embodiments, taking the 2.4 GHz frequency band with a subcarrier spacing of 312.5 kHz as an example, a multicarrier modulation symbol output after IDFT processing corresponding to 20 MHz may include 64 sampling points, and the first 64 / W sampling points of the 64 sampling points may be truncated to generate a first symbol (e.g., On symbol) with a symbol length of 1 / W*4 μs. As shown in FIG. 11, when W=4, the first 16 sampling points of the 64 sampling points are taken, and the truncated 16 sampling points are repeated four times to form a repeating waveform with a period of 16 sampling points, ultimately generating a first symbol (e.g., On symbol) with a symbol length of 1 μs. Here, the GI of four sampling points is 20 sampling points in total. Therefore, during the subcarrier mapping process, non-zero allocation is required for every four subcarriers, and after IDFT transformation, the corresponding time domain waveform is repeated four times with a period of 0.8 μs. For example, four subcarriers with subcarrier index k = (-6, -2, 2, 6) among the 13 subcarriers are assigned non-zero values, and the other subcarriers are not assigned.

[0103] 11 takes W=4 as an example. When W is further increased, the corresponding number of subcarriers can be increased to meet the operation of non-zero allocation (also called extraction) of subcarriers with larger intervals in the frequency domain, for example, 17 subcarriers. Therefore, the length of the symbol portion of the first symbol is related to the number of subcarriers generating the first symbol and / or the interval between the non-zero allocated subcarriers.

[0104] In this embodiment, a time-domain signal with repeated periods is generated by frequency-domain extraction (which can also be called non-zero allocation of subcarriers), and one period of the time-domain signal is extracted as an On symbol, which does not introduce additional frequency-domain components and does not generate additional frequency-domain leakage.

[0105] In some embodiments, a first multicarrier modulation symbol includes W portions, where all first symbols corresponding to the first multicarrier modulation symbol are generated based on the W portions of the first multicarrier modulation symbol and / or all second symbols corresponding to the first multicarrier modulation symbol are generated based on the W portions of the first multicarrier modulation symbol, where W is a positive integer. Optionally, the first multicarrier modulation symbol is a multicarrier modulation symbol output by a waveform generator associated with the first symbol after IDFT processing. Optionally, the first multicarrier modulation symbol may be an OFDM symbol.

[0106] Specifically, for example, in the 2.4 GHz frequency band, the subcarrier spacing is 312.5 kHz. The multicarrier modulation symbol output after IDFT processing corresponding to 20 MHz may include 64 sampling points, and each of the W parts may have 64 / W sampling points.

[0107] In some embodiments, one of the W portions corresponds to a symbol portion of the first symbol or a symbol portion of the second symbol. Optionally, the portion corresponding to a symbol portion of the first symbol and the portion corresponding to a symbol portion of the second symbol correspond to different modulation or masking operations.

[0108] In some embodiments, taking the 2.4 GHz frequency band with a subcarrier spacing of 312.5 kHz as an example, a multicarrier modulation symbol output after IDFT processing corresponding to 20 MHz may include 64 sampling points, generating multiple first symbols (e.g., On symbols). The 64 sampling points may be divided into W parts (which may also be referred to as sampling point sets) to generate W different first symbols (e.g., On symbols). For example, one multicarrier modulation symbol generates four different On symbols, and the 64 sampling points output by the On-WG IDFT are sequentially divided into four non-overlapping parts (which may also be referred to as sampling point sets), each of which includes 16 sampling points. As shown in FIG. 12, each set of 16 sampling points undergoes GI insertion to form an On symbol with 20 sampling points, corresponding to an On symbol length of 1 us.

[0109] In some embodiments, the second symbol (eg, Off symbol) is generated by Off-WG, and the energy of the corresponding 64 / W sampling points is zero.

[0110] In some embodiments, taking the 2.4 GHz frequency band with a subcarrier spacing of 312.5 kHz as an example, a multicarrier modulation symbol output after IDFT processing corresponding to 20 MHz may include 64 sampling points, and the 64 sampling points are divided into W parts (which may also be referred to as sampling point sets). Unlike FIG. 12, each part (which may also be referred to as a sampling point set) undergoes a masking operation to generate a first symbol (e.g., an On symbol) and a second symbol (e.g., an Off symbol). As shown in FIG. 13, the OOK symbol set "On-Off-On-Off" generates four new parts (which may also be referred to as sampling point sets) by masking four parts (each part including 16 sampling points) of the 64 sampling points, where the energy of the sampling point representing the Off symbol is zero. Each part undergoes GI insertion to generate an On symbol and an Off symbol. The masking process may also be an OOK modulation process. In the process of generating an OOK signal, the OFDM transmitter first generates a time-domain high-level signal with the length of one multi-carrier modulation symbol, and the signal amplitude meets the requirements and is as flat as possible. The output signal of the IDFT is then subjected to OOK modulation to generate On and Off symbols in the time domain. The symbol length of the OOK modulation can be set as needed to generate signals with different rates.

[0111] Specifically, the flow of generating On symbols and Off symbols in the time domain can be as shown in Figure 14. Here, the Masking or OOK modulation step can adopt the above-mentioned sampling value selection method and adopt a masking window method to generate OOK symbols. As shown in Figure 15, the masking window is used to generate 1010. As an option, the window can be a roll-off window to reduce out-of-band leakage. Specifically, 1010 corresponding to the masking window can be coded bits (e.g., Manchester coding), where information bit 0 is coded as 10 and information bit 1 is coded as 01. Specifically, as shown in Figure 16, the input of the Masking or OOK modulation step can be coded bits for information bits.

[0112] In some embodiments, various data rates can be flexibly realized by adjusting the OOK symbol length, coding rate, subcarrier spacing (SCS), and number of IDFT sampling points during OOK symbol generation. Table 1 shows some possible combinations. Here, a 312.54 kHz subcarrier spacing is used for WiFi 2.4 GHz, and a 31.25 kHz subcarrier spacing is used for WiFi sub-1 GHz. Taking Manchester coding as an example, at a 1 / 2 coding rate, information bit 0 is coded as 10 and information bit 1 is coded as 01. At a 1 / 4 coding rate, information bit 0 is coded as 1010 and information bit 1 is coded as 0101.

[0113] [Table 1]

[0114] In Table 1 above, N represents the number of first symbols included in the multicarrier modulation symbol output by the waveform generator associated with the first symbol after IDFT processing, where N is a positive integer, the length of the IDFT symbol represents the time length of the multicarrier modulation symbol output by the waveform generator associated with the first symbol after IDFT processing, and GI represents the time length of the GI.

[0115] The present embodiment does not require frequency domain extraction (which may also be referred to as non-zero allocation of subcarriers), and one IDFT transform can generate multiple OOK symbols, without the need to increase the number of subcarriers.

[0116] In some embodiments, a first multicarrier modulation symbol includes W portions, where all of the first symbols corresponding to the first multicarrier modulation symbol are generated based on the W portions of the first multicarrier modulation symbol and / or all of the second symbols corresponding to the first multicarrier modulation symbol are generated based on the W portions of the first multicarrier modulation symbol, and the W portions and the spacing between non-zero allocated subcarriers are related to each other, where W is a positive integer. Optionally, the first multicarrier modulation symbol is a multicarrier modulation symbol output by a waveform generator associated with the first symbol after IDFT processing. Optionally, the first multicarrier modulation symbol may be an OFDM symbol.

[0117] In some embodiments, one of the W portions includes at least one sub-portion, where one sub-portion of the at least one sub-portion corresponds to a symbol portion of the first symbol or a symbol portion of the second symbol. Optionally, the sub-portion corresponding to a symbol portion of the first symbol and the sub-portion corresponding to a symbol portion of the second symbol correspond to different modulation or masking operations.

[0118] In some embodiments, taking the 2.4 GHz frequency band with a subcarrier spacing of 312.5 kHz as an example, a multicarrier modulation symbol output after IDFT processing corresponding to 20 MHz may include 64 sampling points. The 64 sampling points are divided into W parts (which may also be referred to as sampling point sets), with each of the W parts including two subparts, each corresponding to a different modulation or masking operation. Specifically, simultaneously with frequency domain extraction, at least one period of the time domain signal may be extracted from a periodically repeating time domain signal, and masking may be performed within the time domain signal to generate On and Off symbols. As shown in FIG. 17, the frequency domain extraction period is 2, the spacing between non-zero-allocated subcarriers is 1 subcarrier, and the waveform generated by IDFT is repeated four times with a period of 16 sampling points. The 16 sampling points within each sampling point period are divided into two groups, each with 8 sampling points. The sampling points in different groups are masked differently to generate two OOK symbols within one period. The 64 sampling points output by the IDFT can generate 8 OOK symbols.

[0119] In some embodiments, various data rates can be flexibly realized by adjusting the OOK symbol length, frequency domain sampling period, coding rate, subcarrier spacing, and number of IDFT sampling points. Some possible combination examples are shown below in Table 2.

[0120] [Table 2]

[0121] In Table 2 above, N represents the number of first symbols included in the multicarrier modulation symbol output by the waveform generator associated with the first symbol after IDFT processing, N is a positive integer, the length of the IDFT symbol represents the time length of the multicarrier modulation symbol output by the waveform generator associated with the first symbol after IDFT processing, and GI represents the time length of the GI.

[0122] In some embodiments, the length of the first symbol is determined according to Equation 1: T = (1 / N) * IDFT symbol length + GI Equation 1

[0123] Here, T represents the length of the first symbol, N represents the number of the first symbols included in the multicarrier modulation symbol output by the waveform generator associated with the first symbol after IDFT processing, where N is a positive integer, the length of the IDFT symbol represents the time length of the multicarrier modulation symbol output by the waveform generator associated with the first symbol after IDFT processing, and GI represents the time length of the GI.

[0124] In some embodiments, the data transfer rate corresponding to the target signal is determined based on at least one of the length of the first symbol, the length of the second symbol, the number of subcarriers, the spacing between non-zero allocated subcarriers, the subcarrier spacing, the frequency bandwidth, and the coding rate.

[0125] Therefore, in an embodiment of the present application, the first communication device can generate the first symbol and / or the second symbol of the target signal based on at least one of the number of subcarriers, the spacing between non-zero-allocated subcarriers, the subcarrier spacing, and the frequency bandwidth to adapt to different coverage scenarios. This allows the first symbol and / or the second symbol to be generated with various lengths, enabling more flexible and diverse data rates. That is, in an embodiment of the present application, more flexible and diverse data rates can be realized to adapt to different coverage scenarios for data transmission of an AMP device, or data transmission of an AMP device or transmission of a WUR signal in an NR system. At the same time, the embodiment of the present application can simplify the OOK signal generation process, enabling one or more OOK symbols to be generated by a single IDFT transformation.

[0126] The above describes in detail the method embodiments of the present application in conjunction with Figures 10 to 17, and the following describes in detail the device embodiments of the present application in conjunction with Figures 18 to 22. It should be understood that the device embodiments and the method embodiments correspond to each other, and similar descriptions can be referred to the method embodiments.

[0127] 18 shows a schematic block diagram of a communication device 300 according to an embodiment of the present application. The communication device 300 is a first communication device, and as shown in FIG. 18, the communication device 300 includes: a communication unit 310; The communication unit 310 is used to transmit the target signal; wherein the target signal is a signal that carries information by signal amplitude, the target signal includes n first symbols and / or m second symbols, the first symbols are at a first level, the second symbols are at a second level, the first level is higher than the second level, and m and n are both positive integers; Here, the n first symbols are generated based on at least one of the number of subcarriers, the spacing between non-zero allocated subcarriers, the subcarrier spacing, and the frequency bandwidth, and / or the m second symbols are generated based on at least one of the number of subcarriers, the spacing between non-zero allocated subcarriers, the subcarrier spacing, and the frequency bandwidth.

[0128] In some embodiments, when the target signal includes at least the n first symbols, the first symbols include a guard interval GI portion and a symbol portion, wherein the length of the symbol portion of the first symbol is related to at least one of the number of subcarriers and the spacing between non-zero allocated subcarriers.

[0129] In some embodiments, if the length of the first symbol is related to at least the spacing between non-zero allocated subcarriers, the associated relationship between the length of the first symbol and the spacing between non-zero allocated subcarriers is stipulated by a protocol, or the associated relationship between the length of the first symbol and the spacing between non-zero allocated subcarriers is configured by a network device, and / or When the length of the first symbol is associated with at least the number of subcarriers, the relationship between the length of the first symbol and the number of subcarriers is stipulated by a protocol, or the relationship between the length of the first symbol and the number of subcarriers is configured by a network device.

[0130] In some embodiments, all of the first symbols corresponding to a first multicarrier modulation symbol are generated based on a first portion of the first multicarrier modulation symbol.

[0131] In some embodiments, the first portion is a 1 / W portion of the first multicarrier modulation symbol, where possible values ​​of W and the spacing between non-zero allocated subcarriers are related and W is a positive integer.

[0132] In some embodiments, the first portion is a leading 1 / W portion of the first multicarrier modulation symbol, or the first portion is a trailing 1 / W portion of the first multicarrier modulation symbol.

[0133] In some embodiments, the first portion comprises a portion of the IDFT symbol length between 1 / W*(i-1) * IDFT symbol length and 1 / W*i * IDFT symbol length, where i is a positive integer, and

number

[0134] In some embodiments, a first multicarrier modulation symbol includes W portions, where all of the first symbols corresponding to the first multicarrier modulation symbol are generated based on the W portions of the first multicarrier modulation symbol and / or all of the second symbols corresponding to the first multicarrier modulation symbol are generated based on the W portions of the first multicarrier modulation symbol, where W is a positive integer.

[0135] In some embodiments, one of the W portions corresponds to a symbol portion of the first symbol or a symbol portion of the second symbol.

[0136] In some embodiments, the portion corresponding to the symbol portion of the first symbol and the portion corresponding to the symbol portion of the second symbol correspond to different modulation or masking operations.

[0137] In some embodiments, the W portions and the spacing between non-zero allocated subcarriers are related.

[0138] In some embodiments, one of the W portions includes at least one sub-portion, where the one sub-portion of the at least one sub-portion corresponds to a symbol portion of the first symbol or a symbol portion of the second symbol.

[0139] In some embodiments, the sub-portions corresponding to symbol portions of the first symbol and the sub-portions corresponding to symbol portions of the second symbol correspond to different modulation or masking operations.

[0140] In some embodiments, the first multi-carrier modulation symbol is a multi-carrier modulation symbol output by a waveform generator associated with the first symbol after an inverse discrete Fourier transform (IDFT) process.

[0141] In some embodiments, the length of the first symbol is determined based on the following formula: T = (1 / N) * IDFT symbol length + GI Here, T represents the length of the first symbol, N represents the number of the first symbols included in the multicarrier modulation symbol output by the waveform generator associated with the first symbol after IDFT processing, where N is a positive integer, the length of the IDFT symbol represents the time length of the multicarrier modulation symbol output by the waveform generator associated with the first symbol after IDFT processing, and GI represents the time length of the GI.

[0142] In some embodiments, the data transfer rate corresponding to the target signal is determined based on at least one of the length of the first symbol, the length of the second symbol, the number of subcarriers, the spacing between non-zero allocated subcarriers, the subcarrier spacing, the frequency bandwidth, and the coding rate.

[0143] In some embodiments, the first communication device is an ambient power-generating base station, or the first communication device is an ambient power-generating access point, or the first communication device is an ambient power-generating relay device.

[0144] In some embodiments, the communication unit may be a communication interface or transceiver, or an input / output interface of a communication chip or an on-chip system. The processing unit may be one or more processors.

[0145] It can be understood that the communication device 300 according to the embodiment of the present application can correspond to the first communication device in the method embodiment of the present application, and the above and other operations and / or functions of each unit in the communication device 300 are respectively used to realize the corresponding flow of the first communication device in the method 200 shown in FIG. 10, and detailed descriptions thereof will be omitted here for brevity.

[0146] 19 shows a schematic block diagram of a communication device 400 according to an embodiment of the present application. The communication device 400 is a second communication device, and as shown in FIG. 19, the communication device 400 includes: a communication unit 410; The communication unit 410 is used to receive the target signal; wherein the target signal is a signal that carries information by signal amplitude, the target signal includes n first symbols and / or m second symbols, the first symbols are at a first level, the second symbols are at a second level, the first level is higher than the second level, and m and n are both positive integers; Here, the n first symbols are generated based on at least one of the number of subcarriers, the spacing between non-zero allocated subcarriers, the subcarrier spacing, and the frequency bandwidth, and / or the m second symbols are generated based on at least one of the number of subcarriers, the spacing between non-zero allocated subcarriers, the subcarrier spacing, and the frequency bandwidth.

[0147] In some embodiments, when the target signal includes at least the n first symbols, the first symbols include a guard interval GI portion and a symbol portion, wherein the length of the symbol portion of the first symbol is related to at least one of the number of subcarriers and the spacing between non-zero allocated subcarriers.

[0148] In some embodiments, if the length of the first symbol is related to at least the spacing between non-zero allocated subcarriers, the associated relationship between the length of the first symbol and the spacing between non-zero allocated subcarriers is stipulated by a protocol, or the associated relationship between the length of the first symbol and the spacing between non-zero allocated subcarriers is configured by a network device, and / or When the length of the first symbol is associated with at least the number of subcarriers, the relationship between the length of the first symbol and the number of subcarriers is stipulated by a protocol, or the relationship between the length of the first symbol and the number of subcarriers is configured by a network device.

[0149] In some embodiments, all of the first symbols corresponding to a first multicarrier modulation symbol are generated based on a first portion of the first multicarrier modulation symbol.

[0150] In some embodiments, the first portion is a 1 / W portion of the first multicarrier modulation symbol, where possible values ​​of W and the spacing between non-zero allocated subcarriers are related and W is a positive integer.

[0151] In some embodiments, the first portion is a leading 1 / W portion of the first multicarrier modulation symbol, or the first portion is a trailing 1 / W portion of the first multicarrier modulation symbol.

[0152] In some embodiments, the first portion comprises a portion of the IDFT symbol length between 1 / W*(i-1) * IDFT symbol length and 1 / W*i * IDFT symbol length, where i is a positive integer, and

number

[0153] In some embodiments, a first multicarrier modulation symbol includes W portions, where all of the first symbols corresponding to the first multicarrier modulation symbol are generated based on the W portions of the first multicarrier modulation symbol and / or all of the second symbols corresponding to the first multicarrier modulation symbol are generated based on the W portions of the first multicarrier modulation symbol, where W is a positive integer.

[0154] In some embodiments, one of the W portions corresponds to a symbol portion of the first symbol or a symbol portion of the second symbol.

[0155] In some embodiments, the portion corresponding to the symbol portion of the first symbol and the portion corresponding to the symbol portion of the second symbol correspond to different modulation or masking operations.

[0156] In some embodiments, the W portions and the spacing between non-zero allocated subcarriers are related.

[0157] In some embodiments, one of the W portions includes at least one sub-portion, where the one sub-portion of the at least one sub-portion corresponds to a symbol portion of the first symbol or a symbol portion of the second symbol.

[0158] In some embodiments, the sub-portions corresponding to symbol portions of the first symbol and the sub-portions corresponding to symbol portions of the second symbol correspond to different modulation or masking operations.

[0159] In some embodiments, the first multi-carrier modulation symbol is a multi-carrier modulation symbol output by a waveform generator associated with the first symbol after an inverse discrete Fourier transform (IDFT) process.

[0160] In some embodiments, the length of the first symbol is determined based on the following formula: T = (1 / N) * IDFT symbol length + GI Here, T represents the length of the first symbol, N represents the number of the first symbols included in the multicarrier modulation symbol output by the waveform generator associated with the first symbol after IDFT processing, where N is a positive integer, the length of the IDFT symbol represents the time length of the multicarrier modulation symbol output by the waveform generator associated with the first symbol after IDFT processing, and GI represents the time length of the GI.

[0161] In some embodiments, the data transfer rate corresponding to the target signal is determined based on at least one of the length of the first symbol, the length of the second symbol, the number of subcarriers, the spacing between non-zero allocated subcarriers, the subcarrier spacing, the frequency bandwidth, and the coding rate.

[0162] In some embodiments, the second communication device is an ambient power generating terminal, or the second communication device is an ambient power generating station, or the second communication device is a zero power consumption device.

[0163] In some embodiments, the communication unit may be a communication interface or transceiver, or an input / output interface of a communication chip or an on-chip system. The processing unit may be one or more processors.

[0164] It can be understood that the communication device 400 according to the embodiment of the present application can correspond to the second communication device in the method embodiment of the present application, and the above and other operations and / or functions of each unit in the communication device 400 are respectively used to realize the corresponding flow of the second communication device in the method 200 shown in FIG. 10, and detailed descriptions thereof will be omitted here for brevity.

[0165] 20 is a schematic structural diagram of a communication device 500 provided in an embodiment of the present application. The communication device 500 shown in FIG. 20 includes a processor 510, which can call and execute a computer program from a memory to implement the method in the embodiment of the present application.

[0166] In some embodiments, as shown in Figure 20, the communication device 500 may further include a memory 520. Here, the processor 510 may call and execute a computer program from the memory 520 to implement the method in the embodiments of the present application.

[0167] Here, the memory 520 may be a single device independent of the processor 510 or may be integrated into the processor 510.

[0168] In some embodiments, as shown in FIG. 20 , the communication device 500 may further include a transceiver 530, and the processor 510 may control the transceiver 530 to communicate with other devices, specifically to transmit information or data to other devices or receive information or data transmitted from other devices.

[0169] Here, the transceiver 530 may include a transmitter and a receiver, and may further include an antenna, the number of which may be one or more.

[0170] In some embodiments, the processor 510 may implement the functionality of a processing unit in a communications device, and for the sake of brevity, a detailed description will not be given here.

[0171] In some embodiments, the transceiver 530 may implement the functionality of a communication unit in the communication device 300 and / or the communication device 400, and for the sake of brevity, will not be described in detail here.

[0172] In some embodiments, the communication device 500 may specifically be the communication device 300 of the embodiments of the present application, and the communication device 500 may implement the corresponding flow implemented by the first communication device in each method of the embodiments of the present application, and for the sake of brevity, detailed descriptions will be omitted here.

[0173] In some embodiments, the communication device 500 may specifically be the communication device 400 of the embodiments of the present application, and the communication device 500 may implement the corresponding flow implemented by the second communication device in each method of the embodiments of the present application, and for the sake of brevity, detailed description will be omitted here.

[0174] Fig. 21 is a schematic structural diagram of an apparatus 600 according to an embodiment of the present application. The apparatus 600 shown in Fig. 21 includes a processor 610, which can call and execute a computer program from a memory to implement the method according to an embodiment of the present application.

[0175] 21, the device 600 may further include a memory 620. Here, the processor 610 may call and execute a computer program from the memory 620 to implement the method in the embodiment of the present application.

[0176] Here, the memory 620 may be a single device independent of the processor 610 or may be integrated into the processor 610.

[0177] In some embodiments, processor 610 may implement the functionality of a processing unit in communications device 300 and / or communications device 400, and for the sake of brevity will not be described in detail here.

[0178] In some embodiments, the device 600 may further include an input interface 630. Here, the processor 610 may control the input interface 630 to communicate with other devices or chips, and specifically, to obtain information or data transmitted from other devices or chips. Optionally, the processor 610 may be located on-chip or off-chip.

[0179] In some embodiments, input interface 630 may implement the functionality of a communication unit in communication device 300 and / or communication device 400 .

[0180] In some embodiments, the apparatus 600 may further include an output interface 640. Here, the processor 610 may control the output interface 640 to communicate with other devices or chips, specifically to output information or data to other devices or chips. Optionally, the processor 610 may be located on-chip or off-chip.

[0181] In some embodiments, output interface 640 may implement the functionality of a communication unit in communication device 300 and / or communication device 400 .

[0182] In some embodiments, the apparatus can be applied to a communication device in the embodiments of the present application, and the apparatus can implement the corresponding flow implemented by the first communication device or the second communication device in each method of the embodiments of the present application, and for the sake of brevity, detailed descriptions are omitted here.

[0183] In some embodiments, the device proposed in the embodiments of the present application may be a chip, such as a system level chip, a system chip, a system on a chip, or a system on a chip.

[0184] 22 is a schematic block diagram of a communication system 700 provided in an embodiment of the present application. As shown in FIG. 22, the communication system 700 includes a first communication device 710 and a second communication device 720.

[0185] Here, the first communication device 710 can be used to realize the corresponding functions realized by the first communication device in the above method, and the second communication device 720 can be used to realize the corresponding functions realized by the second communication device in the above method, and for the sake of brevity, detailed descriptions are omitted here.

[0186] It is understood that the processor in the embodiments of the present application may be an integrated circuit chip capable of processing signals. In the implementation process, each step of the above method embodiments can be completed by a hardware integrated logic circuit in the processor or instructions in software form. The processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component. Each method, step, and logic block diagram disclosed in the embodiments of the present application can be realized or executed. The general-purpose processor may be a microprocessor, or the processor may be any conventional processor, etc. The steps of the method disclosed in the embodiments of the present application may be directly implemented by a hardware coding processor or by a combination of hardware and software modules in the coding processor. The software module can be located in a mature storage medium in the art, such as a random memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method according to its hardware.

[0187] It is understood that memory in the present embodiments may be volatile, non-volatile, or both. Here, non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash. Volatile memory may be random access memory (RAM), which is used as external cache. By way of example and not limitation, many forms of RAM may be used. For example, static random access memory (Static RAM, SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronously linked dynamic random access memory (Synchlink DRAM, SLDRAM), and direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein includes, but is not limited to, these and any other suitable types of memory.

[0188] It should be understood that the above memory is an exemplary, but not limiting, description, and for example, the memory in the embodiments of the present application may further include static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM), and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is, the memory in the embodiments of the present application may include, but is not limited to, these and any other suitable types of memory.

[0189] The embodiments of the present application further provide a computer-readable storage medium used to store a computer program.

[0190] In some embodiments, the computer-readable storage medium can be applied to a communication device in the embodiments of the present application, and the computer program causes a computer to execute corresponding steps implemented by the first communication device or the second communication device in each method of the embodiments of the present application, and detailed descriptions thereof are omitted here for brevity.

[0191] Embodiments of the present application further provide a computer program product including computer program instructions.

[0192] In some embodiments, the computer program product can be applied to a communication device in an embodiment of the present application, and the computer program instructions cause a computer to execute a corresponding flow implemented by the first communication device or the second communication device in each method in the embodiment of the present application, and detailed descriptions thereof will be omitted here for brevity.

[0193] In accordance with an embodiment of the present application, a computer program is further provided.

[0194] In some embodiments, the computer program can be applied to a communication device in an embodiment of the present application, and when the computer program is executed by a computer, it causes the computer to execute a corresponding flow implemented by the first communication device or the second communication device in each method of the embodiment of the present application, and detailed descriptions thereof are omitted here for brevity.

[0195] As will be appreciated by those skilled in the art, each example unit and algorithm step described in accordance with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Experts may implement the described functions using different methods for each specific application, but such implementations should not be considered as going beyond the scope of the present application.

[0196] Those skilled in the art will clearly understand that for convenience and brevity of explanation, the specific working processes of the above systems, devices and units can refer to the corresponding processes in the above method embodiments, and the description will be omitted here.

[0197] In some embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods can be realized in other ways. For example, the device embodiments described above are merely schematic, and the division of the units is merely a division of logical functions, and may have other distinguishing ways when actually realized, such as multiple units or components may be combined or integrated into another system, or some features may be omitted or not implemented. Meanwhile, the mutual coupling or direct coupling or communication connection shown or discussed may use some interfaces, indirect coupling or communication connection of devices or units, which may be electrical, mechanical, or other types.

[0198] The units described above as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one place or distributed across multiple network units, some or all of which may be selected according to actual needs to achieve the objectives of the solution of this embodiment.

[0199] Furthermore, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist physically separate, or two or more units may be integrated into one unit.

[0200] The functions may be realized in the form of software functional units and stored in a computer-readable storage medium when sold or used as an independent product. In this understanding, the technical solution of the present application, or a portion thereof that essentially contributes to the prior art, or a portion of the technical solution, may be embodied in the form of a software product, and the computer software product is stored in a storage medium and includes instructions, thereby causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The storage medium includes various media capable of storing program code, such as a USB memory, a portable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0201] The above are only specific embodiments of the present application, but the scope of protection of the present application is not limited thereto, and any modifications or replacements that a person skilled in the art can easily conceive within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the scope of protection of the claims.

Claims

1. a first communication device transmitting a target signal; the target signal is a signal that carries information by signal amplitude, the target signal includes n first symbols and / or m second symbols, the first symbols are at a first level, the second symbols are at a second level, the first level is higher than the second level, and m and n are both positive integers; the n first symbols are generated based on at least one of a number of subcarriers, spacing between non-zero allocated subcarriers, subcarrier spacing, and frequency bandwidth, and / or the m second symbols are generated based on at least one of a number of subcarriers, spacing between non-zero allocated subcarriers, subcarrier spacing, and frequency bandwidth; A method of wireless communication.

2. When the target signal includes at least the n first symbols, the first symbols include a guard interval (GI) portion and a symbol portion, and a length of the symbol portion of the first symbol is associated with at least one of a number of subcarriers and an interval between non-zero allocated subcarriers.

2. The method of claim 1 .

3. If the length of the first symbol is related to at least the spacing between non-zero allocated subcarriers, the association relationship between the length of the first symbol and the spacing between non-zero allocated subcarriers is stipulated by a protocol, or the association relationship between the length of the first symbol and the spacing between non-zero allocated subcarriers is configured by a network device; and / or When the length of the first symbol is associated with at least the number of subcarriers, the relationship between the length of the first symbol and the number of subcarriers is stipulated by a protocol, or the relationship between the length of the first symbol and the number of subcarriers is configured by a network device.

3. The method of claim 2.

4. all of the first symbols corresponding to a first multicarrier modulation symbol are generated based on a first portion of the first multicarrier modulation symbol; 4. The method according to claim 1, wherein the first and second electrodes are connected to a first electrode.

5. The first portion is a 1 / W portion of the first multicarrier modulation symbol, where possible values ​​of W and the spacing between non-zero allocated subcarriers are related, and W is a positive integer.

5. The method of claim 4.

6. the first portion is a leading 1 / W portion of the first multicarrier modulation symbol, or the first portion is a trailing 1 / W portion of the first multicarrier modulation symbol; 6. The method of claim 5.

7. the first portion includes a portion of the IDFT symbol length between 1 / W*(i-1)*IDFT symbol length and 1 / W*i*IDFT symbol length, where i is a positive integer; and [Equation 1] and the length of the IDFT symbol represents the time length of a multicarrier modulation symbol output by a waveform generator associated with the first symbol after IDFT processing.

6. The method of claim 5.

8. a first multicarrier modulation symbol includes W portions, and all of the first symbols corresponding to the first multicarrier modulation symbol are generated based on the W portions of the first multicarrier modulation symbol, and / or all of the second symbols corresponding to the first multicarrier modulation symbol are generated based on the W portions of the first multicarrier modulation symbol, where W is a positive integer; 4. The method according to claim 1, wherein the first and second electrodes are connected to a first electrode.

9. one of the W portions corresponds to a symbol portion of the first symbol or a symbol portion of the second symbol; 9. The method of claim 8.

10. a portion corresponding to a symbol portion of the first symbol and a portion corresponding to a symbol portion of the second symbol correspond to different modulation or masking operations; 10. The method of claim 9.

11. The W portions and the spacing between non-zero allocated subcarriers are related to each other.

9. The method of claim 8.

12. one of the W portions includes at least one sub-portion, and the one sub-portion of the at least one sub-portion corresponds to a symbol portion of the first symbol or a symbol portion of the second symbol; 12. The method of claim 11 .

13. a sub-portion corresponding to a symbol portion of the first symbol and a sub-portion corresponding to a symbol portion of the second symbol correspond to different modulation or masking operations; 13. The method of claim 12.

14. the first multicarrier modulation symbol is a multicarrier modulation symbol output by a waveform generator associated with the first symbol after performing an inverse discrete Fourier transform (IDFT) process; 14. The method according to any one of claims 4 to 13.

15. The length of the first symbol is determined based on the following formula: T = (1 / N) * IDFT symbol length + GI where T represents the length of the first symbol, N represents the number of the first symbols included in a multicarrier modulation symbol output by a waveform generator associated with the first symbol after IDFT processing, where N is a positive integer, the length of the IDFT symbol represents the time length of the multicarrier modulation symbol output by the waveform generator associated with the first symbol after IDFT processing, and GI represents the time length of the GI.

15. The method according to any one of claims 1 to 14.

16. The data transfer rate corresponding to the target signal is determined based on at least one of a length of the first symbol, a length of the second symbol, a number of subcarriers, a spacing between non-zero allocated subcarriers, a subcarrier spacing, a frequency bandwidth, and a coding rate.

16. The method according to any one of claims 1 to 15.

17. The first communication device is an ambient power-generating base station, or the first communication device is an ambient power-generating access point, or the first communication device is an ambient power-generating relay device.

17. The method according to any one of claims 1 to 16.

18. receiving a target signal at a second communication device; the target signal is a signal that carries information by signal amplitude, the target signal includes n first symbols and / or m second symbols, the first symbols are at a first level, the second symbols are at a second level, the first level is higher than the second level, and m and n are both positive integers; the n first symbols are generated based on at least one of a number of subcarriers, spacing between non-zero allocated subcarriers, subcarrier spacing, and frequency bandwidth, and / or the m second symbols are generated based on at least one of a number of subcarriers, spacing between non-zero allocated subcarriers, subcarrier spacing, and frequency bandwidth; A method of wireless communication.

19. When the target signal includes at least the n first symbols, the first symbols include a guard interval (GI) portion and a symbol portion, and a length of the symbol portion of the first symbol is associated with at least one of a number of subcarriers and an interval between non-zero allocated subcarriers.

20. The method of claim 18.

20. If the length of the first symbol is related to at least the spacing between non-zero allocated subcarriers, the association relationship between the length of the first symbol and the spacing between non-zero allocated subcarriers is stipulated by a protocol, or the association relationship between the length of the first symbol and the spacing between non-zero allocated subcarriers is configured by a network device; and / or When the length of the first symbol is associated with at least the number of subcarriers, the relationship between the length of the first symbol and the number of subcarriers is stipulated by a protocol, or the relationship between the length of the first symbol and the number of subcarriers is configured by a network device.

20. The method of claim 19.

21. all of the first symbols corresponding to a first multicarrier modulation symbol are generated based on a first portion of the first multicarrier modulation symbol; 21. The method according to any one of claims 18 to 20.

22. the first portion is a 1 / W portion of the first multicarrier modulation symbol, where possible values ​​of W are related to the spacing between non-zero allocated subcarriers, and W is a positive integer.

22. The method of claim 21 .

23. the first portion is a leading 1 / W portion of the first multicarrier modulation symbol, or the first portion is a trailing 1 / W portion of the first multicarrier modulation symbol; 23. The method of claim 22.

24. the first portion includes a portion of the IDFT symbol length between 1 / W*(i-1)*IDFT symbol length and 1 / W*i*IDFT symbol length, where i is a positive integer; and [Equation 2] and the length of the IDFT symbol represents the time length of a multicarrier modulation symbol output by a waveform generator associated with the first symbol after IDFT processing.

23. The method of claim 22.

25. a first multicarrier modulation symbol includes W portions, and all of the first symbols corresponding to the first multicarrier modulation symbol are generated based on the W portions of the first multicarrier modulation symbol, and / or all of the second symbols corresponding to the first multicarrier modulation symbol are generated based on the W portions of the first multicarrier modulation symbol, where W is a positive integer; 21. The method according to any one of claims 18 to 20.

26. one of the W portions corresponds to a symbol portion of the first symbol or a symbol portion of the second symbol; 26. The method of claim 25.

27. a portion corresponding to a symbol portion of the first symbol and a portion corresponding to a symbol portion of the second symbol correspond to different modulation or masking operations; 27. The method of claim 26.

28. The W portions and the spacing between non-zero allocated subcarriers are related to each other.

26. The method of claim 25.

29. one of the W portions includes at least one sub-portion, and the one sub-portion of the at least one sub-portion corresponds to a symbol portion of the first symbol or a symbol portion of the second symbol; 29. The method of claim 28.

30. a sub-portion corresponding to a symbol portion of the first symbol and a sub-portion corresponding to a symbol portion of the second symbol correspond to different modulation or masking operations; 30. The method of claim 29.

31. the first multicarrier modulation symbol is a multicarrier modulation symbol output by a waveform generator associated with the first symbol after performing an inverse discrete Fourier transform (IDFT) process; 31. The method of any one of claims 21 to 30.

32. The length of the first symbol is determined based on the following formula: T = (1 / N) * IDFT symbol length + GI where T represents the length of the first symbol, N represents the number of the first symbols included in a multicarrier modulation symbol output by a waveform generator associated with the first symbol after IDFT processing, where N is a positive integer, the length of the IDFT symbol represents the time length of the multicarrier modulation symbol output by the waveform generator associated with the first symbol after IDFT processing, and GI represents the time length of the GI.

32. The method of any one of claims 18 to 31.

33. The data transfer rate corresponding to the target signal is determined based on at least one of a length of the first symbol, a length of the second symbol, a number of subcarriers, a spacing between non-zero allocated subcarriers, a subcarrier spacing, a frequency bandwidth, and a coding rate.

33. The method of any one of claims 18 to 32.

34. The second communication device is an ambient power generation terminal, or the second communication device is an ambient power generation station, or the second communication device is a zero power consumption device.

34. The method of any one of claims 18 to 33.

35. 1. A communication device, comprising: the communication device is a first communication device; the communication device includes a communication unit; the communication unit is used to transmit a target signal; the target signal is a signal that carries information by signal amplitude, the target signal includes n first symbols and / or m second symbols, the first symbols are at a first level, the second symbols are at a second level, the first level is higher than the second level, and m and n are both positive integers; the n first symbols are generated based on at least one of a number of subcarriers, spacing between non-zero allocated subcarriers, subcarrier spacing, and frequency bandwidth, and / or the m second symbols are generated based on at least one of a number of subcarriers, spacing between non-zero allocated subcarriers, subcarrier spacing, and frequency bandwidth; Communication devices.

36. 1. A communication device, comprising: the communication device is a second communication device; the communication device includes a communication unit; the communication unit is used to receive a target signal; the target signal is a signal that carries information by signal amplitude, the target signal includes n first symbols and / or m second symbols, the first symbols are at a first level, the second symbols are at a second level, the first level is higher than the second level, and m and n are both positive integers; the n first symbols are generated based on at least one of a number of subcarriers, spacing between non-zero allocated subcarriers, subcarrier spacing, and frequency bandwidth, and / or the m second symbols are generated based on at least one of a number of subcarriers, spacing between non-zero allocated subcarriers, subcarrier spacing, and frequency bandwidth; Communication devices.

37. 1. A communication device, comprising: the communication device is a first communication device; The communication device includes a processor and a memory, the memory being used to store a computer program, and the processor being used to call and execute the computer program stored in the memory so that the communication device performs the method of any one of claims 1 to 17. Communication devices.

38. 1. A communication device, comprising: the communication device is a second communication device; The communication device includes a processor and a memory, the memory being used to store a computer program, and the processor being used to call and execute the computer program stored in the memory so that the communication device performs the method of any one of claims 18 to 34. Communication devices.

39. A chip, a processor; The processor is used to retrieve and execute a computer program from memory so that a device to which the chip is attached performs the method of any one of claims 1 to 17. Tips.

40. A chip, a processor; The processor is used to retrieve and execute a computer program from memory so that a device to which the chip is attached performs the method of any one of claims 18 to 34. Tips.

41. A computer-readable storage medium used to store a computer program, When the computer program is executed, the method of any one of claims 1 to 17 is realized. A computer-readable storage medium.

42. A computer-readable storage medium used to store a computer program, When the computer program is executed, the method of any one of claims 18 to 34 is realized. A computer-readable storage medium.

43. containing computer program instructions, The computer program instructions, when executed, result in the method of any one of claims 1 to 17. Computer program products.

44. containing computer program instructions, The computer program instructions, when executed, result in the method of any one of claims 18 to 34. Computer program products.

45. When executed, the method of any one of claims 1 to 17 is realized. Computer program.

46. When executed, the method of any one of claims 18 to 34 is realized. Computer program.

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