Wireless communication method, and communication device

Abstract

Provided are a wireless communication method, and a communication device. The method comprises: a first device sending a first PPDU to a second device, wherein the first PPDU comprises a first part and a second part, and the bandwidth of the first part is different from that of the second part, and / or the waveform of the first part is different from that of the second part. In the present application, the bandwidths and / or waveforms of different parts in a first PPDU may be different. The technical solution can better meet communication requirements, especially the communication requirements of AMP devices.

Description

Wireless communication methods and communication devices Technical Field

[0001] This application relates to the field of communication technology, and more specifically, to a wireless communication method and a communication device. Background Technology

[0002] Ambient power (AMP) devices can send and / or receive AMP physical layer protocol data units (PPDUs). Similar to PPDUs defined in related technologies, AMP PPDUs may also include a preamble field. Additionally, AMP PPDUs may include one or more of the following: a synchronization (SYNC) field, a data field, a signal (SIG) field, and an excitation field.

[0003] Summary of the Invention

[0004] This application provides a wireless communication method and a communication device. The various aspects covered by this application are described below.

[0005] In a first aspect, a wireless communication method is provided, the method comprising: a first device transmitting a first PPDU to a second device; wherein the first PPDU comprises a first part and a second part, the bandwidth (BW) of the first part and the bandwidth of the second part are different, and / or the waveform of the first part and the waveform of the second part are different.

[0006] In a second aspect, a wireless communication method is provided, the method comprising: a second device receiving a first PPDU transmitted by a first device; wherein the first PPDU comprises a first part and a second part, the bandwidth of the first part and the bandwidth of the second part are different, and / or the waveform of the first part and the waveform of the second part are different.

[0007] Thirdly, a communication device is provided, characterized in that the communication device is a first device, the communication device comprising: a transmitting unit for transmitting a first PPDU to a second device; wherein the first PPDU comprises a first part and a second part, the bandwidth of the first part and the bandwidth of the second part are different, and / or the waveform of the first part and the waveform of the second part are different.

[0008] Fourthly, a communication device is provided, characterized in that the communication device is a second device, the communication device comprising: a receiving unit for receiving a first PPDU sent by a first device; wherein the first PPDU comprises a first part and a second part, the bandwidth of the first part and the bandwidth of the second part are different, and / or the waveform of the first part and the waveform of the second part are different.

[0009] Fifthly, a communication device is provided, including a transceiver, a memory, and a processor, wherein the memory is used to store a program, the processor is used to invoke the program in the memory, and to control the transceiver to receive or transmit signals, so that the communication device performs some or all of the steps in the methods of the above aspects.

[0010] Sixthly, a communication system is provided, which includes the aforementioned communication device. In another possible design, the system may further include other devices that interact with the communication device as described in the embodiments of this application.

[0011] In a seventh aspect, a computer-readable storage medium is provided, the computer-readable storage medium storing a computer program that causes a communication device to perform some or all of the steps of the methods described in the preceding aspects.

[0012] Eighthly, embodiments of this application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program operable to cause a communication device to perform some or all of the steps of the methods described in the foregoing aspects. In some implementations, the computer program product may be a software installation package.

[0013] Ninthly, embodiments of this application provide a chip including a memory and a processor, the processor being able to call and run a computer program from the memory to implement some or all of the steps described in the methods of the foregoing aspects.

[0014] In this application, the bandwidth and / or waveform of different parts within the first PPDU can be different. This technical solution can better meet communication requirements, especially the communication requirements of AMP. For example, when the first PPDU is an AMP PPDU, the bandwidth of the synchronization field, SIG field, or data field in the AMP PPDU can be narrower than the bandwidth of the excitation field. Narrower bandwidth in some fields of the AMP PPDU can accommodate situations where the processing power of the AMP device is relatively weak. A wider excitation field in the AMP PPDU can make the wireless power transfer (WPT) signal and / or backscattering carrier stronger, thereby achieving a better excitation effect. Furthermore, when the first PPDU is an AMP PPDU, the waveform of the excitation field used for WPT can be an OFDM waveform, while the waveform of the AMP data field can be a non-OFDM waveform, such as an OOK waveform. OFDM waveforms provide higher WPT efficiency due to their higher peak-to-average power ratio (PAPR). However, OFDM waveforms may not be optimal for AMP data fields because AMP data fields need to be detected by the AMP device, which cannot handle the complexity of OFDM waveforms. Therefore, setting the waveform of the AMP data field to a non-OFDM waveform is more in line with the capabilities of the AMP device. Attached Figure Description

[0015] Figure 1 is a schematic diagram of the wireless communication system used in the embodiments of this application.

[0016] Figure 2 is an example diagram of an AMP PPDU format.

[0017] Figure 3 is a schematic flowchart of a wireless communication method provided in an embodiment of this application.

[0018] Figure 4 is a format example diagram of an AMP PPDU provided in an embodiment of this application.

[0019] Figure 5 is a schematic structural diagram of a communication device provided in an embodiment of this application.

[0020] Figure 6 is a schematic structural diagram of another communication device provided in an embodiment of this application.

[0021] Figure 7 is a schematic structural diagram of a communication device provided in an embodiment of this application. Detailed Implementation

[0022] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0023] AMP

[0024] AMP communication employs energy harvesting and backscatter communication technologies. An AMP device refers to an Internet of Things (IoT) device that uses various environmental energy sources, such as radio frequency energy, light energy, solar energy, thermal energy, and mechanical energy, to power itself. Such devices may have no energy storage capacity or very limited energy storage capacity (e.g., using capacitors with a capacitance of tens of microfarads (µF)). Compared to traditional IoT devices, AMP devices offer numerous advantages, including no need for conventional batteries, no maintenance, small size, low complexity and low cost, and long lifespan.

[0025] In some scenarios, AMP devices can also be called zero-power devices or ambient internet of things (A-IoT) devices.

[0026] An environmental Internet of Things (IoT) can include a network device 110 and an AMP device 120, as shown in Figure 1. The network device is used to send wireless power signals and downlink communication signals to the AMP device, and to receive backscattered signals from the AMP device. A basic AMP device includes an energy harvesting module, a backscattered communication module, and a low-power computing module. In addition, the AMP device may also have a memory or sensor to store basic information (such as object identification) or acquire sensor data such as ambient temperature and humidity.

[0027] It should be noted that Figure 1 exemplarily illustrates a network device and an AMP device. Optionally, the communication system 100 may include multiple network devices, and each network device may include other AMP devices within its coverage area. This application embodiment does not limit this.

[0028] In addition, in some implementations, the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in this application embodiment.

[0029] It should be understood that the technical solutions of the embodiments of this application can be applied to various communication systems, such as: 5th generation (5G) systems or new radio (NR), long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, cellular IoT, etc. The technical solutions provided in this application can also be applied to future communication systems, such as 6th generation mobile communication systems, etc.

[0030] The AMP device in this application embodiment can be used as a terminal device, which can also be referred to as a station (STA), user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. The terminal device in this application embodiment can be a device that provides voice and / or data connectivity to users, and can be used to connect people, objects, and machines, such as home appliances, sensors, electronic tags, etc., with wireless connectivity. The terminal in this application embodiment can be a wireless terminal in a smart home, a wireless terminal in an IWSN, a wireless terminal in smart logistics and smart warehousing, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, etc.

[0031] The network device in this application embodiment can be a device for communicating with a terminal device. If the terminal is an electronic tag, the network device can be a reader / writer for reading and writing electronic tags (e.g., a reader / writer based on radio frequency identification (RFID) technology). The network device can also be an access network device or a wireless access network device, such as a base station. In this application embodiment, the network device can refer to a radio access network (RAN) node (or device) that connects the terminal device to the wireless network. A base station can broadly encompass, or be replaced by, various names including: NodeB, evolved NodeB (eNB), next-generation NodeB (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master MeNB, secondary SeNB, multi-mode radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station can be a macro base station, micro base station, relay node, donor node, or similar, or a combination thereof. A base station can also refer to a communication module, modem, or chip installed within the aforementioned equipment or apparatus. Base stations can also be mobile switching centers, devices that perform base station functions in device-to-device (D2D), vehicle-to-everything (V2X), and machine-to-machine (M2M) communications, network-side devices in 6G networks, and devices that perform base station functions in future communication systems. Base stations can support networks using the same or different access technologies. The embodiments of this application do not limit the specific technologies or device forms used in the network equipment.

[0032] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move depending on the location of the mobile base station. In other examples, a helicopter or drone can be configured as a device to communicate with another base station.

[0033] In some deployments, the network device in this application embodiment may refer to a CU or a DU, or the network device may include both a CU and a DU. The gNB may also include an AAU.

[0034] Network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on airplanes, balloons, and satellites. This application does not limit the scenario in which the network devices and terminal devices are located.

[0035] It should be understood that all or part of the functions of the communication device in this application can also be implemented by software functions running on hardware, or by virtualization functions instantiated on a platform (e.g., a cloud platform).

[0036] In some implementations, the AMP device may include an energy harvesting module 121 and / or a backscatter communication module 122. In some cases, the AMP device may also include a low-power computing module 123. The low-power computing module 123 provides computing functions for the terminal, such as data processing. In other cases, the AMP device may include a sensor 124 for collecting external information (e.g., ambient temperature, ambient humidity, etc.). In still other cases, the AMP device may include a memory 125 for storing information (e.g., external information collected by the aforementioned sensors, or such as object identification).

[0037] The energy harvesting module 121 described above is used to harvest energy. In some implementations, energy can be harvested via a wireless power supply signal sent by a network device. This wireless power supply signal can be a radio frequency (RF) signal sent by the network device; therefore, the energy harvesting module described above is also called an "RF energy harvesting module."

[0038] The aforementioned backscatter communication module 122 is used for backscatter communication between the terminal and network devices. For example, the AMP device receives a wireless signal sent by the network device 110 and modulates the signal to load the information to be transmitted. Finally, the modulated signal is radiated out from the antenna; this information transmission process is called backscatter communication. Backscatter communication and load modulation are inseparable. Load modulation adjusts and controls the circuit parameters of the terminal's oscillation circuit according to the data flow rhythm, causing parameters such as the terminal's impedance to change accordingly, thus completing the modulation process. Load modulation technology mainly includes two methods: resistive load modulation and capacitive load modulation.

[0039] In some implementations, other devices, such as amplifiers, may be provided on the transmit (TX) path of network device 110 for processing the signal to be transmitted. Similarly, other devices, such as low-noise amplifiers (LNAs), may be provided on the receive (RX) path of network device 110 for processing the received signal.

[0040] In other implementations, the AMP device may include an energy harvesting unit to harvest energy from the wireless power signals transmitted by the network device. Of course, the AMP device may also include a logic processing unit to perform corresponding calculations.

[0041] AMP device classification

[0042] In some scenarios, based on the energy source and energy usage of AMP devices, AMP devices can be divided into three categories: passive AMP devices, semi-passive AMP devices, and active AMP devices.

[0043] I. Passive AMP devices.

[0044] Passive AMP devices typically do not require an internal battery. When an AMP device approaches a network device, it falls within the near-field range of the network device's antenna radiation. At this point, the AMP device's antenna can generate an induced current through electromagnetic induction. This induced current powers the AMP device, enabling it to demodulate the received signal and / or modulate and encode the signal to be transmitted. In some implementations, the passive AMP device can be an electronic tag, and correspondingly, the network device can be a reader / writer for a radio frequency identification (RFID) system, used to read and / or modify the contents of the electronic tag.

[0045] II. Semi-passive AMP devices.

[0046] Semi-passive AMP devices do not have conventional batteries installed, but they can use the energy harvesting module 121 to harvest radio wave energy and store the harvested energy in an energy storage unit (such as a capacitor). After the energy storage unit obtains energy, it can power the AMP device to demodulate the received signal and / or modulate and encode the signal to be transmitted.

[0047] III. Active AMP Devices

[0048] Active AMP devices can have a built-in battery. The battery powers the AMP device to demodulate the received signal and / or modulate and encode the signal to be transmitted. However, when the AMP device uses backscatter communication technology, it does not consume battery power. Therefore, for this type of AMP device, "zero power consumption" is mainly reflected in scenarios where the terminal uses backscatter communication technology.

[0049] In some implementations, the aforementioned active AMP device can be an electronic tag, and the network device can be an RFID reader. In this case, the built-in battery can power the RFID chip within the AMP device, thereby increasing the read / write distance between the RFID reader and the electronic tag. On the other hand, the built-in battery can also power the RFID chip within the AMP device, reducing the read / write latency of the RFID reader on the electronic tag and improving communication reliability.

[0050] For the passive and semi-passive AMP devices mentioned above, since they do not have built-in batteries, they need to harvest energy from the environment. On one hand, the AMP device can only drive the circuitry to receive or transmit data when it has harvested a certain amount of energy. Before it has harvested enough energy, it cannot receive or transmit data. On the other hand, when the AMP device receives or transmits data, it consumes stored energy. When the stored energy falls below a certain level, the AMP device can no longer receive or transmit data, and at this point, it needs to harvest energy from the environment again to continue receiving or transmitting data.

[0051] In other scenarios, based on the transmitter type, AMP devices can be divided into three categories, including the following types: backscatter-based AMP devices, active transmitter-based AMP devices, and AMP devices that have both backscatter and active transmitters.

[0052] 1) AMP devices based on backscattering.

[0053] These types of AMP devices transmit uplink data using the backscatter method described above. These devices do not have an active transmitter for active transmission, but only a backscatter transmitter. Therefore, when these terminals transmit data, the network device needs to provide a carrier wave, and the terminal devices perform backscatter based on this carrier wave to achieve data transmission.

[0054] 2) AMP devices based on active transmitters.

[0055] These types of AMP devices use active transmitters with active transmission capabilities for uplink data transmission. Therefore, when sending data, these AMP devices can transmit data using their own active transmitters without requiring network equipment to provide a carrier wave. Suitable active transmitters for AMP devices include, for example, ultra-low-power ASK or ultra-low-power FSK transmitters. Based on current implementations, these transmitters can reduce overall power consumption to 400–600 µW when transmitting a 100 µW signal.

[0056] 3) An AMP device that simultaneously features backscatter and an active transmitter.

[0057] These terminals can support both backscatter and active transmitters. The terminal can determine which uplink signal transmission method to use based on different conditions (such as battery level and available ambient energy) or the scheduling of network devices: whether to use backscatter or active transmitter for active transmission.

[0058] Low-power IoT based on cellular networks

[0059] Cellular IoT is booming. For example, 3GPP has standardized IoT technologies such as narrowband Internet of Things (NB-IoT), machine-type communication (MTC), and reduced capability (RedCap). However, there are still many IoT communication needs in various scenarios that cannot be met by existing technologies. These include harsh communication environments (high temperature, extremely low temperature, high humidity, high pressure, high radiation, or high speed movement, etc.), the need for extremely small terminal form factors, and extremely low cost.

[0060] Therefore, in order to cover these unmet IoT communication needs, ultra-low cost, extremely small size, battery-free / maintenance-free IoT also needs to be developed in cellular networks, and environmental IoT can meet this need.

[0061] Based on the discussion of AMP application scenarios according to the 3GPP system architecture (SA)1, AMP can be used in at least the following four types of scenarios:

[0062] • Object recognition, such as logistics, production line product management, and supply chain management;

[0063] • Environmental monitoring, such as monitoring the temperature, humidity, and harmful gases in the work environment and natural environment;

[0064] • Positioning, such as indoor positioning, smart item finding, and production line item positioning;

[0065] • Intelligent control, such as the intelligent control of various electrical appliances in smart homes (turning on and off air conditioners, adjusting temperature), and the intelligent control of various facilities in agricultural greenhouses (automatic irrigation, fertilization).

[0066] AMP PPDU

[0067] Communication between AMP devices can be based on PPDUs, meaning the AMP device can send and / or receive AMP PPDUs. An AMP PPDU can be a PPDU that the AMP device can detect and / or send. Similar to PPDUs defined in related technologies, an AMP PPDU may also include a preamble field. The preamble field can be an 802.11 preamble field. Additionally, an AMP PPDU may include one or more of the following: a synchronization (SYNC) field, a data field, a signal field, and an excitation field. The synchronization field can also be called the AMP-SYNC field. The data field can also be called the AMP data field. The SIG field can also be called the AMP-SIG field.

[0068] As one possible implementation, related technologies (such as IEEE 802.11bp) would define an AMP downlink (DL) PPDU in 2.4GHz. This AMP DL PPDU can contain at least an 802.11 preamble field, an AMP-SYNC field, and an AMP data field. Whether the AMP DL PPDU includes an AMP-SIG field is undetermined. For backscattering devices, the AMP DL PPDU may include one or more excitation fields. For backscattering devices, the AMP DL PPDU may include one or more AMP data fields. Each AMP data field is preceded by an AMP-SYNC field and an AMP-SIG field.

[0069] Figure 2 illustrates several possible formats for AMP PPDUs. It should be noted that the AMP PPDU formats shown in Figure 2 are merely examples; AMP PPDUs can also have other formats.

[0070] The format of the AMP PPDU shown in Figure 2 will be explained below.

[0071] Format 1a AMP PPDUs may include a preamble, a SYNC field, and a data field. Format 1a AMP PPDUs can be used for DL ​​transmissions.

[0072] Format 1b AMP PPDUs may include a preamble, a SYNC field, a SIG field, and a data field. Format 1b AMP PPDUs can be used for DL ​​transmissions.

[0073] Formats 1a and 1b will be selected based on whether or not the SIG field is retained. If the SIG field is retained, all formats (e.g., formats 1 through 4) will be able to include the SIG field; otherwise, the SIG subfield can be removed from all PPDU formats.

[0074] Format 2 AMP PPDUs can include a preamble, a SYNC field, a SIG field, a data field, and an excitation field. The excitation field follows the data field. Format 2 AMP PPDUs can be used for DL ​​transmission and power supply.

[0075] Format 3 AMP PPDUs can include a preamble, an excitation field, a SYNC field, a SIG field, and a data field. The excitation field follows the preamble field. Format 3 AMP PPDUs can be used for power supply and DL transmission.

[0076] Format 4 AMP PPDUs can include a preamble, an excitation field, a SYNC field, a SIG field, a data field, and an excitation field. One excitation field follows the preamble field, and the other follows the data field. Format 4 AMP PPDUs can be used for power supply, DL transmission, and BS uplink (UL) data transmission.

[0077] Format 5 AMP PPDUs can include a preamble, multiple excitation fields, multiple SYNC fields, multiple SIG fields, and multiple data fields. Format 5 PPDUs can be used for corresponding multiple power supplies, DL transmissions, and BS UL data transmissions.

[0078] As can be seen from formats 2 to 5, most AMP PPDU formats contain an incentive field.

[0079] Figure 3 is a schematic flowchart of a wireless communication method provided in an embodiment of this application. The method shown in Figure 3 can be executed by a first device and a second device. For example, the first device may include a network device, and the second device may be a terminal device. Alternatively, the first device may include a terminal device, and the second device may include a network device. The terminal device may, for example, be an AMP device.

[0080] The method shown in Figure 3 may include step S310.

[0081] Step S310: The first device sends the first PPDU. The second device receives the PPDU.

[0082] The first PPDU can be an AMP PPDU. The format of the first PPDU can be any of formats 1a to 5 in Figure 2. Alternatively, the format of the first PPDU can also be other than the format shown in Figure 2.

[0083] It should be noted that the first PPDU can be a DL PPDU, meaning the first device includes network equipment and the second device includes terminal equipment. Alternatively, the first PPDU can be a UL PPDU, meaning the first device includes terminal equipment and the second device includes network equipment.

[0084] The first PPDU may include a first part and a second part. The first part may include one or more fields. The second part may include one or more fields. For example, the first part may include any one or more fields from the first PPDU, and the second part may include any one or more fields that are different from the first part.

[0085] For example, the first part may include a first stimulus field. The second part may include one or more of the following: a preamble, a synchronization field, a SIG field, a data field, and a second stimulus field. The first PPDU may include one stimulus field, which may be the first stimulus field; that is, the first PPDU may not include a second stimulus field. The first PPDU may include multiple stimulus fields. The first stimulus field and the second stimulus field may be any two different stimulus fields from the multiple stimulus fields.

[0086] The synchronization field, SIG field, and data field in the first PPDU can all be for AMP technology (i.e., can be detected by AMP devices). That is, the synchronization field can be the AMP synchronization field, the SIG field can be the AMP-SIG field, and the data field can be the AMP data field.

[0087] It should be noted that this application does not limit the specific content of the preamble. For example, the preamble may include subfields of the preamble defined in related technologies (e.g., the 802.11 preamble).

[0088] It should be noted that the excitation field can be used for WPT (or charging) and / or to provide a carrier wave for the backscattering device. For example, the excitation field can be used for the WPT of an AMP device, meaning the excitation field serves as the WPT excitation, and the AMP device can perform energy harvesting based on the excitation field; this excitation field can be called the WPT excitation field. Similarly, the excitation field can be used to provide a carrier wave for the backscattering device, meaning the excitation field can serve as the backscattering excitation; this excitation field can be called the backscattering excitation field. The excitation field can be used to provide a carrier wave for both backscattering and WPT; this excitation field can be called the WPT and backscattering excitation field. The excitation part can accomplish the above functions using time division multiplexing (TDM) / frequency division multiplexing (FDM), or the excitation field can simultaneously accomplish both functions using power frequency division.

[0089] The functions of the first and second excitation fields can be the same or different. For example, the first excitation field can be a WPT excitation field, and the second excitation field can be a backscattering excitation field. Alternatively, both the first and second excitation fields can be WPT excitation fields. Or, both the first and second excitation fields can be backscattering excitation fields. Or, both the first and second excitation fields can be both WPT and backscattering excitation fields.

[0090] In some embodiments, the bandwidth of the first portion and the bandwidth of the second portion are different. For example, the bandwidth of the first stimulus field may be different from the bandwidth of one or more of the following fields: preamble, synchronization field, SIG field, data field, and second stimulus field.

[0091] Therefore, this application proposes a technical solution where the bandwidth of fields within a PPDU can vary, namely, a dynamic bandwidth solution. This dynamic bandwidth solution can better meet communication requirements. For example, for AMP communication, the dynamic bandwidth solution can be applied to the AMP PPDU. Exemplarily, the bandwidth of the synchronization field, SIG field, or data field in the AMP PPDU can be narrower than the bandwidth of the excitation field (including the first excitation field and / or the second excitation field). Narrower bandwidth for some fields in the AMP PPDU can accommodate situations where the processing power of the AMP device is relatively weak. A wider excitation field in the PPDU can make the WPT signal and / or backscattered carrier stronger, thereby achieving a better excitation effect.

[0092] In some embodiments, the waveform of the first part is different from the waveform of the second part. The waveform may include, for example, orthogonal frequency division multiplexing (OFDM) waveforms, direct sequence spread spectrum (DSSS) waveforms, on-off keying (OOK) waveforms, sine waves, or minimum shift keying (MSK) waveforms. The waveform may include single-carrier (SC) waveforms or multi-carrier (MC) waveforms. For example, an OFDM waveform may include an SC-OFDM waveform and / or an MC-OFDM waveform. An OOK waveform may include an SC-OOK waveform and / or an MC-OOK waveform. Exemplarily, the waveform of the first excitation field may differ from the waveforms of one or more of the following fields: preamble, synchronization field, SIG field, data field, and second excitation field.

[0093] Therefore, this application proposes a technical solution where the waveforms of fields within the PPDU can be different, namely, a dynamic waveform solution. This dynamic waveform solution can better meet communication requirements. For example, for AMP communication, the waveform of the first excitation field used to excite the WPT can be an OFDM waveform, while the waveform of the AMP data field can be a non-OFDM waveform, such as an OOK waveform. OFDM waveforms provide higher WPT efficiency due to their higher PAPR. However, for the AMP data field, an OFDM waveform may not be optimal because the AMP data field needs to be detected by the AMP device, and the AMP device cannot handle the complex OFDM waveform. Therefore, setting the waveform of the AMP data field to a non-OFDM waveform is more in line with the capabilities of the AMP device.

[0094] An AMP PPDU that applies dynamic waveforms and / or dynamic bandwidth can be called a dynamic AMP PPDU; that is, the first PPDU can be called a dynamic AMP PPDU. It should be noted that "dynamic AMP PPDU" is merely an example name for the first PPDU, and the first PPDU can also have other names.

[0095] Understandably, fields in dynamic AMP PPDUs have more flexible bandwidth and / or waveforms, and this flexible PPDU format design can improve the performance of AMP systems.

[0096] In some embodiments, the second part may include multiple fields. These multiple fields may include a first field and a second field. The bandwidths of the first field and the second field may be different, and / or the waveforms of the first field and the second field may be different. In other words, the bandwidths of any two fields in the second part may be different, and / or the waveforms of any two fields in the second part may be different.

[0097] For example, the second part may include a second stimulus field. The second part may also include a synchronization field, a SIG field, or a data field. The bandwidth of the second stimulus field may differ from the bandwidth of the synchronization field, SIG field, or data field; and / or, the waveform of the second stimulus field may differ from the waveform of the synchronization field, SIG field, or data field. Furthermore, if the first part includes a first stimulus field, the bandwidth of the second stimulus field may differ from the bandwidth of the first stimulus field, and / or, the waveform of the second stimulus field may differ from the waveform of the first stimulus field.

[0098] When the second part includes multiple fields, the bandwidth of the multiple fields in the second part can be the same, all being the first bandwidth, and / or the waveform of the multiple fields in the second part can be the same, all being the first waveform. In this case, the bandwidth of the second part can be the first bandwidth, and the waveform of the second part can be the first waveform. Based on this, the difference between the bandwidth of the first part and the bandwidth of the second part can include: the bandwidth of the first part and the first bandwidth are different. The difference between the waveform of the first part and the waveform of the second part can include: the waveform of the first part and the first waveform are different.

[0099] When the second part includes multiple fields, the bandwidths of these fields can be different (at least two bandwidth values ​​exist), and the bandwidth of the second part can be the bandwidth of any one of the fields. In this case, the difference between the bandwidth of the first part and the bandwidth of the second part can include: the bandwidth of the first part is different from the bandwidth of any one of the fields in the second part. Similarly, the waveforms of the multiple fields in the second part can be different (at least two waveforms exist), and the waveform of the second part can be the waveform of any one of the fields. In this case, the difference between the waveform of the first part and the waveform of the second part can include: the waveform of the first part is different from the waveform of any one of the fields in the second part.

[0100] When the first part includes multiple fields, the bandwidth of the multiple fields in the first part can be the same, which is the second bandwidth, and / or the waveform of the multiple fields in the first part can be the same, which is the second waveform. In this case, the bandwidth of the first part can be the second bandwidth, and the waveform of the first part can be the second waveform. Based on this, the difference between the bandwidth of the first part and the bandwidth of the second part can include: the second bandwidth and the bandwidth of the second part are different. The difference between the waveform of the first part and the waveform of the second part can include: the second waveform and the waveform of the second part are different.

[0101] When the first part includes multiple fields, the bandwidths of these fields can be different; the bandwidth of the first part can be the bandwidth of any one of the fields. In this case, the difference between the bandwidth of the first part and the bandwidth of the second part can include: the bandwidth of the second part being different from the bandwidth of any one of the fields in the first part. Similarly, the waveforms of the multiple fields in the first part can be different; the waveform of the first part can be the waveform of any one of the fields. In this case, the difference between the waveform of the first part and the waveform of the second part can include: the waveform of the second part being different from the waveform of any one of the fields in the first part.

[0102] Figure 4 is a format example diagram of a first PPDU provided in an embodiment of this application. Figure 4 also schematically illustrates the bandwidth of each field. In Figure 4, the first PPDU is an AMP PPDU of format 4. The first part may include: an excitation field after the preamble (i.e., the first excitation field). The first excitation field can be used for power supply. The second part may include: a SYNC field, a SIG field, a data field, and an excitation field after the data field (i.e., the second excitation field). The second excitation field can be used for backscattering. As shown in Figure 4, the bandwidth of the SYNC field, the bandwidth of the SIG field, and the bandwidth of the data field are the same. The bandwidth of the first excitation field is greater than the bandwidth of the SYNC field, the bandwidth of the SIG field, and the bandwidth of the data field. The bandwidth of the second excitation field is greater than the bandwidth of the SYNC field, the bandwidth of the SIG field, and the bandwidth of the data field. The bandwidth of the second excitation field is greater than the bandwidth of the first excitation field.

[0103] In some embodiments, the waveform of the first portion or the waveform of the second portion may be selected from a waveform set. For example, the waveforms of some or all fields in the first PPDU may be selected from a waveform set. The waveform set may include a variety of waveforms. Exemplarily, the waveform set may include one or more of the following: OFDM waveform, DSSS waveform, OOK waveform, sine wave, MSK waveform, etc. For example, the waveform set may be {OFDM waveform, DSSS waveform, OOK waveform, sine wave, MSK waveform} or a subset of such a set.

[0104] In some embodiments, the bandwidth of the first portion or the bandwidth of the second portion may be selected from a bandwidth set. For example, the bandwidth of some or all fields in the first PPDU may be selected from the bandwidth set. The bandwidth set may include multiple bandwidth values. Exemplarily, the bandwidth set may include one or more of the following: 1MHz, 2MHz, 4MHz, 10MHz, 20MHz, 22MHz. As a possible implementation, the bandwidth set may be {N1, N2, ..., N...} K MHz. Where K and N i All are positive numbers. For example, the bandwidth set can be {1MHz, 2MHz, 4MHz, 10MHz, 20MHz, 22MHz} or a subset of that set.

[0105] For example, the waveform set can be {OFDM waveform, DSSS waveform, OOK waveform, sine wave, MSK waveform}, and the bandwidth set can be {1MHz, 2MHz, 4MHz, 10MHz, 20MHz, 22MHz}. The preamble section can select an OFDM waveform and a 20MHz bandwidth. The AMP data field can select an OOK waveform and a 2MHz bandwidth. The WPT excitation field can select an OFDM waveform and a 10MHz bandwidth. The backscatter excitation field can select a DSSS waveform and a 22MHz bandwidth.

[0106] In some embodiments, the bandwidth of the first portion or the bandwidth of the second portion is predefined and there is only one bandwidth and waveform combination option. In this case, it is not necessary to inform the receiver or sender of the first PPDU of the bandwidth of the first portion and / or the bandwidth of the second portion.

[0107] In some embodiments, the waveform of the first portion or the waveform of the second portion is predefined but has multiple bandwidth and waveform combination options. In this case, the bandwidth and waveform combination can be configured by the network device. As one possible implementation, the first device can receive or send first configuration information, and / or the second device can receive or send the first configuration information.

[0108] In some embodiments, the waveform of the first portion or the waveform of the second portion is flexibly configured by the network device, and / or the bandwidth of the first portion or the bandwidth of the second portion can be configured by the network device. As one possible implementation, the first device can receive or send first configuration information. For example, if the first device includes a network device, the first device can send the first configuration information. Alternatively, if the first device includes a terminal device, the first device can receive the first configuration information. The second device can also receive or send the first configuration information. For example, if the second device includes a terminal device, the second device can receive the first configuration information. Alternatively, if the second device includes a network device, the first device can send the first configuration information.

[0109] The first configuration information can be used to configure or indicate one or more of the following: the bandwidth of the first part, the bandwidth of the second part, the waveform of the first part, and the waveform of the second part. For example, the first configuration information can be used to configure one or more of the following information of the first PPDU: the bandwidth of the first part, the bandwidth of the second part, the waveform of the first part, and the waveform of the second part. In other words, the waveform and / or bandwidth of some or all fields in the first PPDU can be configured or indicated by the first configuration information.

[0110] In some embodiments, multiple waveform options may be predefined, and the network device can configure specific options using the first configuration information. In some embodiments, multiple bandwidth options may be predefined, and the network device can configure specific options using the first configuration information. Exemplarily, the waveform set may be predefined, and the first configuration information sent by the network device may indicate which part of the waveform set the first or second part belongs to (e.g., indicating an index in the waveform set). Exemplarily, the bandwidth set may be predefined, and the first configuration information sent by the network device may indicate which part of the bandwidth set the first or second part belongs to (e.g., indicating an index in the bandwidth set).

[0111] In some embodiments, the first configuration information can be used to configure or indicate the bandwidth and / or waveform of some or all fields in a PPDU. For example, the waveform and / or bandwidth of some or all fields in each PPDU can be configured in the corresponding PPDU. Exemplarily, each PPDU may include the first configuration information, which is used to indicate the bandwidth and / or waveform of some or all fields in the PPDU.

[0112] In some embodiments, the first configuration information may be used to configure or indicate the bandwidth and / or waveform of some or all fields in a set of PPDUs. A set of PPDUs may include one or more PPDUs.

[0113] For example, a first PPDU may belong to one or more PPDUs. The first configuration information may include second configuration information. The second configuration information may be used to configure one or more of the following information for one or more PPDUs: the bandwidth of the first part, the bandwidth of the second part, the waveform of the first part, and the waveform of the second part.

[0114] Therefore, network devices can save communication resources by indicating the bandwidth and / or waveform of a set of PPDUs with less information.

[0115] In some embodiments, the first configuration information can be used to configure the bandwidth and / or waveform of some or all fields in the PPDU transmitted within a first time period. The PPDU transmitted within the first time period may include one or more PPDUs.

[0116] For example, a first PPDU is transmitted within a first time period. The first configuration information may include third configuration information. The third configuration information may be used to configure one or more of the following information for one or more PPDUs transmitted within the first time period: the bandwidth of the first part, the bandwidth of the second part, the waveform of the first part, and the waveform of the second part.

[0117] In some embodiments, when the second part includes multiple fields, the first configuration information can also be used to configure the bandwidth and / or waveform of multiple fields in the second part. In other words, the first configuration information can be used to configure the bandwidth and / or waveform of each field in the first PPDU. When the first configuration information includes second configuration information and / or third configuration information, the first configuration information can be used to configure the bandwidth and / or waveform of each field in a set of PPDUs, and / or, the first configuration information can be used to configure the bandwidth and / or waveform of each field in the PPDU within a first time period.

[0118] As one possible implementation, the first configuration information can be explicitly indicated. For example, the first configuration information can be included in the SIG field and / or the data field. Exemplarily, when multiple waveform / bandwidth options are predefined and the network device configures specific options, the first configuration information can be included in the SIG field and / or the data field. Exemplarily, when the network device configures waveform / bandwidth for some or all fields in a PPDU, the first configuration information can be included in the SIG field and / or the data field. Exemplarily, when the network device configures waveform / bandwidth for some or all fields in a set of PPDUs, the first configuration information can be included in the SIG field and / or the data field. Exemplarily, when the network device configures waveform / bandwidth for some or all fields in a PPDU within a first time period, the first configuration information can be included in the SIG field and / or the data field of one or more PPDUs within the first time period.

[0119] As another possible implementation, the first configuration information can be implicitly indicated. For example, the first configuration information can be indicated through different synchronization sequences. That is, different synchronization sequences can correspond to different bandwidths and / or waveforms. For example, when multiple waveform / bandwidth options are predefined and the network device configures specific options, the first configuration information can be indicated through different synchronization sequences. For example, when the network device configures waveform / bandwidth for some or all fields in a PPDU, the first configuration information can be indicated through different synchronization sequences. For example, when the network device configures waveform / bandwidth for some or all fields in a set of PPDUs, the first configuration information can be indicated through different synchronization sequences within the first time period. For example, when the network device configures waveform / bandwidth for some or all fields in a PPDU within a first time period, the first configuration information can be indicated through different synchronization sequences within the first time period.

[0120] The method embodiments of this application have been described in detail above. The apparatus embodiments of this application are described in detail below. It should be understood that the descriptions of the method embodiments correspond to the descriptions of the apparatus embodiments. Therefore, any parts not described in detail can be referred to the foregoing method embodiments.

[0121] Figure 5 is a schematic structural diagram of a communication device 500 provided in an embodiment of this application. The communication device 500 can be a first device. The communication device 500 includes a transmitting unit 510.

[0122] The transmitting unit 510 is used to transmit a first PPDU to a second device; wherein the first PPDU includes a first part and a second part, the bandwidth of the first part and the bandwidth of the second part are different, and / or the waveform of the first part and the waveform of the second part are different.

[0123] In some embodiments, where the second part includes a first field and a second field, the bandwidth of the first field and the bandwidth of the second field are different, and / or the waveform of the first field and the waveform of the second field are different.

[0124] In some embodiments, the first part includes a first stimulus field; the second part includes one or more of the following: a preamble, a synchronization field, a SIG field, a data field, and a second stimulus field.

[0125] In some embodiments, the first or second excitation field is used for one or more of the following: wireless power transfer; providing a carrier for a backscattering device.

[0126] In some embodiments, the waveform of the first part or the waveform of the second part is selected from a waveform set, which includes one or more of the following: OFDM waveform, DSSS waveform, OOK waveform, sine wave, MSK waveform.

[0127] In some embodiments, the bandwidth of the first portion or the bandwidth of the second portion is selected from a set of bandwidths, which includes one or more of the following: 1MHz, 2MHz, 4MHz, 10MHz, 20MHz, 22MHz.

[0128] In some embodiments, the communication device is further configured to: receive or send first configuration information; wherein the first configuration information is configured to configure one or more of the following: the bandwidth of the first portion, the bandwidth of the second portion, the waveform of the first portion, and the waveform of the second portion.

[0129] In some embodiments, the first configuration information includes second configuration information, the first PPDU belongs to one or more PPDUs, and the second configuration information is used to configure one or more of the following information of the one or more PPDUs: the bandwidth of the first part, the bandwidth of the second part, the waveform of the first part, and the waveform of the second part.

[0130] In some embodiments, the first configuration information includes third configuration information, the first PPDU is transmitted within a first time period, and the third configuration information is used to configure one or more of the following information of one or more PPDUs transmitted within the first time period: the bandwidth of the first part, the bandwidth of the second part, the waveform of the first part, and the waveform of the second part.

[0131] In some embodiments, where the second part includes multiple fields, the first configuration information is further used to configure one or more of the following: the bandwidth of the multiple fields, the waveform of the multiple fields.

[0132] In some embodiments, the first PPDU is a PPDU supported by the AMP device.

[0133] In an optional embodiment, the transmitting unit 510 may be a transceiver 730. The communication device 500 may also include a processor 710 and a memory 720, as shown in FIG7.

[0134] Figure 6 is a schematic structural diagram of a communication device 600 provided in an embodiment of this application. The communication device 600 can be a second device. The communication device 600 may include a receiving unit 610.

[0135] The receiving unit 610 is used to receive a first PPDU sent by the first device; wherein the first PPDU includes a first part and a second part, the bandwidth of the first part and the bandwidth of the second part are different, and / or the waveform of the first part and the waveform of the second part are different.

[0136] In some embodiments, where the second part includes a first field and a second field, the bandwidth of the first field and the bandwidth of the second field are different, and / or the waveform of the first field and the waveform of the second field are different.

[0137] In some embodiments, the first part includes a first stimulus field; the second part includes one or more of the following: a preamble, a synchronization field, a signal SIG field, a data field, and a second stimulus field.

[0138] In some embodiments, the first or second excitation field is used for one or more of the following: wireless power transfer; providing a carrier for a backscattering device.

[0139] In some embodiments, the waveform of the first part or the waveform of the second part is selected from a waveform set, which includes one or more of the following: OFDM waveform, DSSS waveform, OOK waveform, sine wave, MSK waveform.

[0140] In some embodiments, the bandwidth of the first portion or the bandwidth of the second portion is selected from a set of bandwidths, which includes one or more of the following: 1MHz, 2MHz, 4MHz, 10MHz, 20MHz, 22MHz.

[0141] In some embodiments, the communication device is further configured to: receive or send first configuration information; wherein the first configuration information is configured to configure one or more of the following: the bandwidth of the first portion, the bandwidth of the second portion, the waveform of the first portion, and the waveform of the second portion.

[0142] In some embodiments, the first configuration information includes second configuration information, the first PPDU belongs to one or more PPDUs, and the second configuration information is used to configure one or more of the following information of the one or more PPDUs: the bandwidth of the first part, the bandwidth of the second part, the waveform of the first part, and the waveform of the second part.

[0143] In some embodiments, the first configuration information includes third configuration information, the first PPDU is transmitted within a first time period, and the third configuration information is used to configure one or more of the following information of one or more PPDUs transmitted within the first time period: the bandwidth of the first part, the bandwidth of the second part, the waveform of the first part, and the waveform of the second part.

[0144] In some embodiments, where the second part includes multiple fields, the first configuration information is further used to configure one or more of the following: the bandwidth of the multiple fields, the waveform of the multiple fields.

[0145] In some embodiments, the first PPDU is a PPDU supported by the AMP device.

[0146] In an optional embodiment, the receiving unit 610 may be a transceiver 730. The communication device 600 may also include a processor 710 and a memory 720, as shown in FIG7.

[0147] Figure 7 is a schematic structural diagram of a communication apparatus according to an embodiment of this application. The dashed lines in Figure 7 indicate that the unit or module is optional. This apparatus 700 can be used to implement the methods described in the above method embodiments. The apparatus 700 can be a chip or a communication device. The communication device can be, for example, a terminal device or a network device.

[0148] The apparatus 700 may include one or more processors 710. The processor 710 may support the apparatus 700 in implementing the methods described in the preceding method embodiments. The processor 710 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0149] The apparatus 700 may also include one or more memories 720. The memories 720 store a program that can be executed by the processor 710, causing the processor 710 to perform the methods described in the preceding method embodiments. The memories 720 may be independent of the processor 710 or integrated within the processor 710.

[0150] The device 700 may also include a transceiver 730. The processor 710 can communicate with other devices or chips via the transceiver 730. For example, the processor 710 can send and receive data with other devices or chips via the transceiver 730.

[0151] This application also provides a computer-readable storage medium for storing a program. This computer-readable storage medium can be applied to a terminal or network device provided in this application, and the program causes a computer to execute the methods performed by the terminal or network device in various embodiments of this application.

[0152] This application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to a terminal or network device provided in this application embodiment, and the program causes a computer to execute the methods performed by the terminal or network device in various embodiments of this application.

[0153] This application also provides a computer program. This computer program can be applied to the terminal or network device provided in this application, and the computer program causes the computer to execute the methods performed by the terminal or network device in various embodiments of this application.

[0154] It should be understood that the terms "system" and "network" in this application can be used interchangeably. Furthermore, the terminology used in this application is only for explaining specific embodiments of the application and is not intended to limit the application. The terms "first," "second," "third," and "fourth," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. In addition, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0155] In the embodiments of this application, the term "instruction" can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0156] In the embodiments of this application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information.

[0157] In the embodiments of this application, the term "correspondence" can indicate a direct or indirect correspondence between two things, or an association between two things, or a relationship such as instruction and being instructed, configuration and being configured.

[0158] In this application embodiment, "predefined" or "preconfigured" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0159] In this application embodiment, the "protocol" may refer to a standard protocol in the field of communication, such as the LTE protocol, the NR protocol, and related protocols applied to future communication systems. This application does not limit this.

[0160] In the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0161] In the embodiments of this application, "comprising" can refer to direct inclusion or indirect inclusion. Optionally, "comprising" mentioned in the embodiments of this application can be replaced with "indicating" or "used to determine". For example, "A includes B" can be replaced with "A indicates B" or "A is used to determine B".

[0162] In the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0163] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0164] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0165] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0166] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can read or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs, DVDs) or semiconductor media (e.g., solid-state disks, SSDs), etc.

[0167] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A wireless communication method, characterized in that, include: The first device sends a first physical layer protocol data unit (PPDU) to the second device; The first PPDU includes a first part and a second part, wherein the bandwidth of the first part and the bandwidth of the second part are different, and / or the waveform of the first part and the waveform of the second part are different.

2. The method according to claim 1, characterized in that, In the case where the second part includes a first field and a second field, the bandwidth of the first field and the bandwidth of the second field are different, and / or the waveform of the first field and the waveform of the second field are different.

3. The method according to claim 1 or 2, characterized in that, The first part includes: a first incentive field; The second part includes one or more of the following: preamble, synchronization field, signal SIG field, data field, and second excitation field.

4. The method according to claim 3, characterized in that, The first incentive field or the second incentive field is used for one or more of the following: Wireless power transfer; Provide a carrier wave for the backscattering device.

5. The method according to any one of claims 1-4, characterized in that, The waveform of the first part or the waveform of the second part is selected from a waveform set, which includes one or more of the following: Orthogonal Frequency Division Multiplexing (OFDM) waveform, Direct Sequence Spread Spectrum (DSSS) waveform, On-Off Keying (OOK) waveform, sine wave, Minimum Shift Keying (MSK) waveform.

6. The method according to any one of claims 1-5, characterized in that, The bandwidth of the first part or the bandwidth of the second part is selected from a set of bandwidths, which includes one or more of the following: 1MHz, 2MHz, 4MHz, 10MHz, 20MHz, 22MHz.

7. The method according to any one of claims 1-6, characterized in that, The method further includes: The first device receives or sends first configuration information; The first configuration information is used to configure one or more of the following: the bandwidth of the first part, the bandwidth of the second part, the waveform of the first part, and the waveform of the second part.

8. The method according to claim 7, characterized in that, The first configuration information includes the second configuration information. The first PPDU belongs to one or more PPDUs, and the second configuration information is used to configure one or more of the following information of the one or more PPDUs: the bandwidth of the first part, the bandwidth of the second part, the waveform of the first part, and the waveform of the second part.

9. The method according to claim 8, characterized in that, The first configuration information includes third configuration information. The first PPDU is transmitted within a first time period. The third configuration information is used to configure one or more of the following information for one or more PPDUs transmitted within the first time period: the bandwidth of the first part, the bandwidth of the second part, the waveform of the first part, and the waveform of the second part.

10. The method according to any one of claims 7-9, characterized in that, If the second part includes multiple fields, the first configuration information is also used to configure one or more of the following: the bandwidth of the multiple fields, the waveform of the multiple fields.

11. The method according to any one of claims 1-10, characterized in that, The first PPDU is a PPDU supported by the environmental power AMP device.

12. A wireless communication method, characterized in that, include: The second device receives the first physical layer protocol data unit (PPDU) sent by the first device. The first PPDU includes a first part and a second part, wherein the bandwidth of the first part and the bandwidth of the second part are different, and / or the waveform of the first part and the waveform of the second part are different.

13. The method according to claim 12, characterized in that, In the case where the second part includes a first field and a second field, the bandwidth of the first field and the bandwidth of the second field are different, and / or the waveform of the first field and the waveform of the second field are different.

14. The method according to claim 12 or 13, characterized in that, The first part includes: a first incentive field; The second part includes one or more of the following: preamble, synchronization field, signal SIG field, data field, and second excitation field.

15. The method according to claim 14, characterized in that, The first incentive field or the second incentive field is used for one or more of the following: Wireless power transfer; Provide a carrier wave for the backscattering device.

16. The method according to any one of claims 12-15, characterized in that, The waveform of the first part or the waveform of the second part is selected from a waveform set, which includes one or more of the following: Orthogonal Frequency Division Multiplexing (OFDM) waveform, Direct Sequence Spread Spectrum (DSSS) waveform, On-Off Keying (OOK) waveform, sine wave, Minimum Shift Keying (MSK) waveform.

17. The method according to any one of claims 12-16, characterized in that, The bandwidth of the first part or the bandwidth of the second part is selected from a set of bandwidths, which includes one or more of the following: 1MHz, 2MHz, 4MHz, 10MHz, 20MHz, 22MHz.

18. The method according to any one of claims 12-17, characterized in that, The method further includes: The second device receives or sends the first configuration information; The first configuration information is used to configure one or more of the following: the bandwidth of the first part, the bandwidth of the second part, the waveform of the first part, and the waveform of the second part.

19. The method according to claim 18, characterized in that, The first configuration information includes the second configuration information. The first PPDU belongs to one or more PPDUs, and the second configuration information is used to configure one or more of the following information of the one or more PPDUs: the bandwidth of the first part, the bandwidth of the second part, the waveform of the first part, and the waveform of the second part.

20. The method according to claim 18 or 19, characterized in that, The first configuration information includes third configuration information. The first PPDU is transmitted within a first time period. The third configuration information is used to configure one or more of the following information for one or more PPDUs transmitted within the first time period: the bandwidth of the first part, the bandwidth of the second part, the waveform of the first part, and the waveform of the second part.

21. The method according to any one of claims 18-20, characterized in that, If the second part includes multiple fields, the first configuration information is also used to configure one or more of the following: the bandwidth of the multiple fields, the waveform of the multiple fields.

22. The method according to any one of claims 12-21, characterized in that, The first PPDU is a PPDU supported by the environmental power AMP device.

23. A communication device, characterized in that, The communication device is a first device, and the communication device includes: The transmitting unit is used to transmit the first physical layer protocol data unit (PPDU) to the second device; The first PPDU includes a first part and a second part, wherein the bandwidth of the first part and the bandwidth of the second part are different, and / or the waveform of the first part and the waveform of the second part are different.

24. The communication device according to claim 23, characterized in that, In the case where the second part includes a first field and a second field, the bandwidth of the first field and the bandwidth of the second field are different, and / or the waveform of the first field and the waveform of the second field are different.

25. The communication device according to claim 23 or 24, characterized in that, The first part includes: a first incentive field; The second part includes one or more of the following: preamble, synchronization field, signal SIG field, and data word. Segment, second incentive field.

26. The communication device according to claim 25, characterized in that, The first incentive field or the second incentive field is used for one or more of the following: Wireless power transfer; Provide a carrier wave for the backscattering device.

27. The communication device according to any one of claims 23-26, characterized in that, The waveform of the first part or the waveform of the second part is selected from a waveform set, which includes one or more of the following: Orthogonal Frequency Division Multiplexing (OFDM) waveform, Direct Sequence Spread Spectrum (DSSS) waveform, On-Off Keying (OOK) waveform, sine wave, Minimum Shift Keying (MSK) waveform.

28. The communication device according to any one of claims 23-27, characterized in that, The bandwidth of the first part or the bandwidth of the second part is selected from a set of bandwidths, which includes one or more of the following: 1MHz, 2MHz, 4MHz, 10MHz, 20MHz, 22MHz.

29. The communication device according to any one of claims 23-28, characterized in that, The communication device is also used for: Receive or send the first configuration information; The first configuration information is used to configure one or more of the following: the bandwidth of the first part, the bandwidth of the second part, the waveform of the first part, and the waveform of the second part.

30. The communication device according to claim 29, characterized in that, The first configuration information includes the second configuration information. The first PPDU belongs to one or more PPDUs, and the second configuration information is used to configure one or more of the following information of the one or more PPDUs: the bandwidth of the first part, the bandwidth of the second part, the waveform of the first part, and the waveform of the second part.

31. The communication device according to claim 30, characterized in that, The first configuration information includes third configuration information. The first PPDU is transmitted within a first time period. The third configuration information is used to configure one or more of the following information for one or more PPDUs transmitted within the first time period: the bandwidth of the first part, the bandwidth of the second part, the waveform of the first part, and the waveform of the second part.

32. The communication device according to any one of claims 29-31, characterized in that, If the second part includes multiple fields, the first configuration information is also used to configure one or more of the following: the bandwidth of the multiple fields, the waveform of the multiple fields.

33. The communication device according to any one of claims 23-32, characterized in that, The first PPDU is a PPDU supported by the environmental power AMP device.

34. A communication device, characterized in that, The communication device is a second device, and the communication device includes: The receiving unit is used to receive the first physical layer protocol data unit (PPDU) sent by the first device. The first PPDU includes a first part and a second part, wherein the bandwidth of the first part and the bandwidth of the second part are different, and / or the waveform of the first part and the waveform of the second part are different.

35. The communication device according to claim 34, characterized in that, In the case where the second part includes a first field and a second field, the bandwidth of the first field and the bandwidth of the second field are different, and / or the waveform of the first field and the waveform of the second field are different.

36. The communication device according to claim 34 or 35, characterized in that, The first part includes: a first incentive field; The second part includes one or more of the following: preamble, synchronization field, signal SIG field, data field, and second excitation field.

37. The communication device according to claim 36, characterized in that, The first incentive field or the second incentive field is used for one or more of the following: Wireless power transfer; Provide a carrier wave for the backscattering device.

38. The communication device according to any one of claims 34-37, characterized in that, The waveform of the first part or the waveform of the second part is selected from a waveform set, which includes one or more of the following: Orthogonal Frequency Division Multiplexing (OFDM) waveform, Direct Sequence Spread Spectrum (DSSS) waveform, On-Off Keying (OOK) waveform, sine wave, Minimum Shift Keying (MSK) waveform.

39. The communication device according to any one of claims 34-38, characterized in that, The bandwidth of the first part or the bandwidth of the second part is selected from a set of bandwidths, which includes one or more of the following: 1MHz, 2MHz, 4MHz, 10MHz, 20MHz, 22MHz.

40. The communication device according to any one of claims 34-39, characterized in that, The communication device is also used for: Receive or send the first configuration information; The first configuration information is used to configure one or more of the following: the bandwidth of the first part, the bandwidth of the second part, the waveform of the first part, and the waveform of the second part.

41. The communication device according to claim 40, characterized in that, The first configuration information includes the second configuration information. The first PPDU belongs to one or more PPDUs, and the second configuration information is used to configure one or more of the following information of the one or more PPDUs: the bandwidth of the first part, the bandwidth of the second part, the waveform of the first part, and the waveform of the second part.

42. The communication device according to claim 40 or 41, characterized in that, The first configuration information includes third configuration information. The first PPDU is transmitted within a first time period. The third configuration information is used to configure one or more of the following information for one or more PPDUs transmitted within the first time period: the bandwidth of the first part, the bandwidth of the second part, the waveform of the first part, and the waveform of the second part.

43. The communication device according to any one of claims 40-42, characterized in that, If the second part includes multiple fields, the first configuration information is also used to configure one or more of the following: the bandwidth of the multiple fields, the waveform of the multiple fields.

44. The communication device according to any one of claims 34-43, characterized in that, The first PPDU is a PPDU supported by the environmental power AMP device.

45. A communication device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or transmit signals so that the communication device performs the method as described in any one of claims 1-22.

46. ​​An apparatus, characterized in that, Includes a processor for calling a program from memory to cause the device to perform the method as described in any one of claims 1-22.

47. A chip, characterized in that, Includes a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 1-22.

48. A computer-readable storage medium, characterized in that, It contains a program that causes a computer to perform the method as described in any one of claims 1-22.

49. A computer program product, characterized in that, Includes a program that causes a computer to perform the method as described in any one of claims 1-22.

50. A computer program, characterized in that, The computer program causes the computer to perform the method as described in any one of claims 1-22.

Images