Wireless communication method, network device and environmental energy AMP device

Abstract

A wireless communication method, network device and environmental energy AMP device, the method comprising: a network device sending a first signal to an environmental energy AMP device, the first signal comprising system parameter update information.

Description

Wireless communication method, network device and environmental energy AMP device Technical Field

[0001] The embodiments of the present application relate to the field of communications, and specifically to a wireless communication method, a network device, and an environmental energy AMP device. Background Art

[0002] In zero-power communication, zero-power devices need to harvest energy before they can communicate with network devices. In communication systems, terminal devices need to periodically receive public control information from network devices. Communication between zero-power devices and network devices is affected by the energy status of the zero-power devices themselves, making frequent reception of information unsuitable. Therefore, when zero-power devices are introduced into communication systems, how to receive public control information becomes a pressing issue.

[0003] Summary of the Invention

[0004] The present application provides a wireless communication method, a network device and an environmental energy AMP device. The zero-power device can receive system information based on the system parameter update information of the network device, which is beneficial to reducing the power consumption of the zero-power device.

[0005] In a first aspect, a method for wireless communication is provided, comprising: a network device sending a first signal to an environment energy AMP device, wherein the first signal includes system parameter update information.

[0006] In a second aspect, a method for wireless communication is provided, including: an environment energy AMP device receives a first signal sent by a network device, where the first signal includes system parameter update information.

[0007] In a third aspect, a terminal device is provided for executing the method in the above-mentioned first aspect or its various implementations.

[0008] Specifically, the terminal device includes a functional module for executing the method in the above-mentioned first aspect or its various implementation modes.

[0009] In a fourth aspect, a network device is provided for executing the method in the above second aspect or its various implementations.

[0010] Specifically, the network device includes a functional module for executing the method in the above-mentioned second aspect or its various implementation modes.

[0011] In a fifth aspect, a terminal device is provided, comprising a processor and a memory, wherein the memory is configured to store a computer program, and the processor is configured to call and execute the computer program stored in the memory to perform the method of the first aspect or its respective implementations.

[0012] In a sixth aspect, a network device is provided, comprising a processor and a memory, wherein the memory is configured to store a computer program, and the processor is configured to call and execute the computer program stored in the memory to perform the method of the second aspect or its respective implementations.

[0013] In a seventh aspect, a chip is provided for implementing the method in any one of the first to second aspects or their respective implementations.

[0014] Specifically, the chip includes: a processor for calling and running a computer program from a memory, so that a device equipped with the device executes the method in any one of the first to second aspects or their respective implementations.

[0015] In an eighth aspect, a computer-readable storage medium is provided for storing a computer program, which enables a computer to execute the method of any one of the first to second aspects or their respective implementations.

[0016] In a ninth aspect, a computer program product is provided, comprising computer program instructions, wherein the computer program instructions enable a computer to execute the method of any one of the first to second aspects or their respective implementations.

[0017] In a tenth aspect, a computer program is provided, which, when executed on a computer, enables the computer to execute the method of any one of the first to second aspects or their respective implementations.

[0018] Through the above technical solution, the network device can indicate system parameter update information to the AMP device, and the AMP device can receive system parameters based on the system parameter update information. For example, if the system parameters have not been updated, the system parameters will not be received, which is beneficial to energy saving of the AMP device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic diagram of a communication system architecture provided in an embodiment of the present application.

[0020] FIG2 is a schematic diagram of a zero-power communication system according to an example of the present application.

[0021] FIG3 is a schematic diagram of energy harvesting according to an embodiment of the present application.

[0022] FIG4 is a schematic diagram of backscatter communication according to an embodiment of the present application.

[0023] FIG5 is a circuit diagram of resistive load modulation according to an embodiment of the present application.

[0024] FIG6 is a schematic diagram of the format of a PPDU.

[0025] FIG. 7 is a diagram showing a schematic format of a data portion of a PPDU.

[0026] FIG8 is a schematic diagram showing the format of the frame control portion in the MAC header of the PPDU.

[0027] FIG9 is a schematic diagram of a wireless communication method provided according to an embodiment of the present application.

[0028] FIG10 is a schematic diagram of a PPDU format for carrying system parameter update information provided in an embodiment of the present application.

[0029] FIG11 is a schematic diagram of another PPDU format for carrying system parameter update information provided in an embodiment of the present application.

[0030] FIG12 is a schematic diagram of another PPDU format for carrying system parameter update information provided in an embodiment of the present application.

[0031] FIG13 is a schematic diagram of another PPDU format for carrying system parameter update information provided in an embodiment of the present application.

[0032] FIG14 is a schematic diagram of another PPDU format for carrying system parameter update information provided in an embodiment of the present application.

[0033] FIG15 is a schematic diagram of another PPDU format for carrying system parameter update information provided in an embodiment of the present application.

[0034] FIG16 is a schematic diagram of another PPDU format for carrying system parameter update information provided in an embodiment of the present application.

[0035] FIG17 is a schematic diagram of another PPDU format for carrying system parameter update information provided in an embodiment of the present application.

[0036] FIG18 is a schematic diagram of another PPDU format for carrying system parameter update information provided in an embodiment of the present application.

[0037] FIG19 is a schematic diagram of the format of the data portion of another PPDU carrying system parameter update information provided in an embodiment of the present application.

[0038] FIG20 is a schematic diagram of the format of the data portion of another PPDU carrying system parameter update information provided in an embodiment of the present application.

[0039] Figure 21 is a schematic block diagram of a network device provided according to an embodiment of the present application.

[0040] Figure 22 is a schematic block diagram of an AMP device provided according to an embodiment of the present application.

[0041] Figure 23 is a schematic block diagram of a communication device provided according to an embodiment of the present application.

[0042] Figure 24 is a schematic block diagram of a chip provided according to an embodiment of the present application.

[0043] Figure 25 is a schematic block diagram of a communication system provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0044] The following will describe the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. With respect to the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0045] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity) system. Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system, cellular Internet of Things system, cellular passive Internet of Things system or other communication systems, etc.

[0046] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, or vehicle-to-everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0047] Optionally, the communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, or a standalone (SA) networking scenario.

[0048] Optionally, the communication system in the embodiment of the present application can be applied to an unlicensed spectrum, where the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to an authorized spectrum, where the authorized spectrum can also be considered as an unshared spectrum.

[0049] The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, wherein the terminal device may also be referred to as 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 device, etc.

[0050] In an embodiment of the present application, the network device may be a device for communicating with a mobile device. The network device may be an access point (AP) in WLAN, a base station (BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device (gNB) in an NR network, or a network device in a cellular Internet of Things, or a network device in a cellular passive Internet of Things, or a network device in a future evolved PLMN network or a network device in an NTN network, etc.

[0051] As an example and not a limitation, in an embodiment of the present application, the network device may have a mobile feature, for example, the network device may be a mobile device. Alternatively, the network 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. Optionally, the network device may also be a base station set up in a location such as land or water.

[0052] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the network device (for example, a base station). The cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0053] The terminal device can be a station (ST) 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, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system such as an NR network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, a terminal device in a cellular Internet of Things, a terminal device in a cellular passive Internet of Things, etc.

[0054] In an embodiment of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons and satellites, etc.).

[0055] In an embodiment of the present application, the terminal device may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical, 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, etc.

[0056] As an example and not a limitation, in the embodiment of the present application, the terminal device may also be a wearable device. Wearable devices may also be called wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, 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 clothes or accessories. Wearable devices are not only hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are fully functional, large in size, and can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0057] For example, a communication system 100 used in an embodiment of the present application is shown in FIG1 . The communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (or a communication terminal or terminal). The network device 110 may provide communication coverage for a specific geographic area and may communicate with terminal devices within the coverage area.

[0058] FIG1 exemplarily shows a network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within its coverage area, which is not limited in this embodiment of the present application.

[0059] Optionally, the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiment of the present application.

[0060] It should be understood that in the embodiments of the present application, a device having a communication function in a network / system may be referred to as a communication device. Taking the communication system 100 shown in FIG1 as an example, the communication device may include a network device 110 and a terminal device 120 having a communication function. The network device 110 and the terminal device 120 may be the specific devices described above and will not be described in detail here. The communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity, and other network entities, which are not limited in the embodiments of the present application.

[0061] It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and / or" is simply a description of an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " generally indicates that the related objects are in an "or" relationship.

[0062] It should be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B.

[0063] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and being indicated, configuration and being configured, etc.

[0064] In the embodiments of the present application, "pre-defined" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., a terminal device or a network device). The present application does not limit the specific implementation method. For example, pre-defined may refer to information defined in a protocol.

[0065] In the embodiments of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and this application does not limit this.

[0066] To facilitate understanding of the technical solutions of the embodiments of the present application, the relevant technologies of the present application are explained.

[0067] 1. Zero-power communication

[0068] The key technologies of zero-power communication include energy harvesting, backscatter communication and low-power technology.

[0069] As shown in Figure 2, a typical zero-power communication system (such as an RFID system) includes a network device (such as an RFID system reader) and a zero-power device (such as an electronic tag). The network device is used to send wireless power supply signals and downlink communication signals to the zero-power device and receive backscattered signals from the zero-power device. A basic zero-power device includes an energy harvesting module, a backscatter communication module, and a low-power computing module. In addition, the zero-power device may also have a memory or sensor for storing some basic information (such as item identification, etc.) or sensor data such as ambient temperature and ambient humidity.

[0070] For example, the energy harvesting module can collect energy carried by radio waves in space (Figure 2 shows radio waves emitted by network devices) to drive the low-power computing module of the zero-power device and implement backscatter communication. After obtaining energy, the zero-power device can receive control commands from the network device and send data to the network device based on control signaling using backscattering. The data sent can be data stored in the zero-power device itself (such as an identity identifier or pre-written information, such as the product's production date, brand, manufacturer, etc.). The zero-power device can also be loaded with various sensors, so that the data collected by various sensors can be reported based on the zero-power mechanism.

[0071] The following describes the key technologies in zero-power communication.

[0072] 1. RF Power Harvesting

[0073] As shown in Figure 3, the RF energy harvesting module uses the principle of electromagnetic induction to harvest electromagnetic wave energy from space, thereby obtaining the energy needed to operate zero-power devices. This energy is used to drive low-power demodulation and modulation modules, sensors, and memory readout. Therefore, zero-power devices do not require traditional batteries.

[0074] 2. Back Scattering

[0075] As shown in Figure 4, a zero-power device receives a carrier signal sent by a network device, modulates it, loads the information to be transmitted, and radiates the modulated signal from the antenna. This information transmission process is called backscatter communication. Backscatter and load modulation are closely related. Load modulation achieves this by adjusting and controlling the circuit parameters of the zero-power device's oscillator circuit according to the data stream's rhythm, causing parameters such as the zero-power device's impedance to change accordingly. Load modulation techniques primarily include resistive load modulation and capacitive load modulation. In resistive load modulation, a resistor is connected in parallel with the load, which is turned on or off based on the binary data stream, as shown in Figure 5. The switching of the resistor causes a change in the circuit voltage, thus implementing amplitude-shifted keying (ASK) modulation. This modulation and transmission is achieved by adjusting the amplitude of the zero-power device's backscattered signal. Similarly, in capacitive load modulation, the switching of the capacitor changes the circuit's resonant frequency, enabling frequency-shifted keying (FSK) modulation. This modulation and transmission is achieved by adjusting the operating frequency of the zero-power device's backscattered signal.

[0076] It can be seen that the zero-power device uses load modulation to modulate the incoming signal, thereby realizing the backscatter communication process. Therefore, the zero-power device has significant advantages:

[0077] (1) It does not actively transmit signals, so it does not require complex RF links, such as PA, RF filters, etc.

[0078] (2) There is no need to actively generate high-frequency signals, so no high-frequency crystal oscillator is required;

[0079] (3) With the help of backscatter communication, terminal signal transmission does not need to consume the terminal's own energy.

[0080] 3. Coding technology

[0081] Data transmitted by zero-power devices can use various codes to represent binary "1s" and "0s." RFID systems typically use one of the following encoding methods: non-return-to-zero (NRZ), Manchester, unipolar return-to-zero, differential bi-phase (DBP), differential, pulse interval encoding (PIE), bidirectional space encoding (FMO), Miller, and differential encoding. In simple terms, different encoding techniques use different pulse signals to represent 0s and 1s.

[0082] In some scenarios, based on the energy source and usage of zero-power devices, zero-power devices can be divided into the following types:

[0083] 1. Passive zero-power devices

[0084] Zero-power devices (such as electronic tags in RFID systems) do not require internal batteries. When a zero-power device is close to a network device (such as an RFID reader), it is within the near-field radiation generated by the network device's antenna. Consequently, the zero-power device's antenna generates an induced current through electromagnetic induction, which drives the device's low-power chip circuitry. This enables forward link signal demodulation and reverse link (or reflection link) signal modulation. For backscatter links, the zero-power device uses backscattering to transmit signals.

[0085] It can be seen that the passive zero-power device does not require a built-in battery to drive either the forward link or the reverse link, and is a truly zero-power device.

[0086] Passive zero-power devices do not require batteries, and the RF circuit and baseband circuit are very simple. For example, they do not require low-noise amplifiers (LNAs), power amplifiers (PAs), crystal oscillators, analog-to-digital converters (ADCs), and other devices. Therefore, they have many advantages such as small size, light weight, very low price, and long service life.

[0087] 2. Semi-passive zero-power devices

[0088] Semi-passive zero-power devices do not have conventional batteries themselves, but instead use RF energy harvesting modules to harvest radio wave energy and store it in an energy storage unit (such as a capacitor). This energy is then used to power the low-power chip circuitry of the zero-power device, performing tasks such as demodulating forward link signals and modulating reverse link signals. For backscatter links, the zero-power device uses backscattering to transmit signals.

[0089] It can be seen that the semi-passive zero-power device does not require a built-in battery to drive either the forward link or the reverse link. Although it uses energy stored in capacitors during operation, the energy comes from the radio energy collected by the energy harvesting module. Therefore, it is also a truly zero-power device.

[0090] Semi-passive zero-power devices inherit many advantages of passive zero-power devices, so they have many advantages such as small size, light weight, very low price, and long service life.

[0091] 3. Active zero-power devices

[0092] In some scenarios, zero-power devices can also be active zero-power devices, which can have built-in batteries. The batteries power the low-power chip circuitry in these devices, enabling forward link signal demodulation and reverse link signal modulation. However, for backscatter links, zero-power devices use backscattering to transmit signals. Therefore, the zero-power nature of these devices lies primarily in the fact that reverse link signal transmission does not require the terminal's own power, but rather utilizes backscattering.

[0093] 2. Cellular Passive IoT

[0094] As 5G industry applications expand, the types of connected objects and application scenarios will increase, placing higher demands on the cost and power consumption of communication terminals. The application of battery-free, low-cost passive IoT devices has become a key technology for cellular IoT, expanding the types and number of terminals connected to 5G networks and truly realizing the interconnection of everything. Passive IoT devices can be based on zero-power communication technologies, such as RFID, and can be extended to suit cellular IoT.

[0095] To facilitate understanding of the embodiments of the present application, the power supply signal, scheduling signal and carrier signal related to zero-power communication are explained.

[0096] 1. Energy supply signal

[0097] The energy supply signal is the energy source for the zero-power device to harvest energy.

[0098] From the perspective of energy supply signal carriers, it can be base stations, smart phones, smart gateways, charging stations, micro base stations, etc.

[0099] In terms of frequency band, the frequency band of radio waves used for energy supply can be low frequency, medium frequency, high frequency, etc.

[0100] In terms of waveform, the radio waves used for power supply can be sine waves, square waves, triangle waves, pulses, rectangular waves, etc.

[0101] In addition, the power supply signal can be a continuous wave or a discontinuous wave (ie, a certain period of interruption is allowed).

[0102] Optionally, the energy supply signal can be an existing signal in the 3GPP standard, such as a sounding reference signal (SRS), a physical uplink shared channel (PUSCH), a physical random access channel (PRACH), a physical uplink control channel (PUCCH), a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH), a physical broadcast channel (PBCH), etc., or it can be a WiFi signal or a Bluetooth signal.

[0103] Optionally, the energy supply signal may also be implemented by adding a new signal, for example, adding a signal dedicated to energy supply.

[0104] 2. Trigger signal or scheduling signal

[0105] The trigger signal is used to trigger or schedule the zero-power device to transmit data.

[0106] From the perspective of trigger signal carrier, it can be a base station, smart phone, smart gateway, etc.

[0107] In terms of frequency band, the radio waves used for triggering or scheduling can be low frequency, medium frequency, high frequency, etc.

[0108] In terms of waveform, the radio wave used for triggering or scheduling can be a sine wave, square wave, triangle wave, pulse, rectangular wave, etc.

[0109] In addition, the trigger signal can be a continuous wave or a discontinuous wave (ie, a certain period of interruption is allowed).

[0110] Optionally, the trigger signal may be an existing signal in the 3GPP standard, such as SRS, PUSCH, PRACH, PUCCH, PDCCH, PDSCH, PBCH, or a WIFI signal or a Bluetooth signal.

[0111] Optionally, the trigger signal may also be implemented by adding a new signal, for example, adding a signal dedicated to triggering or scheduling.

[0112] 3. Carrier signal

[0113] The carrier signal is used by the zero-power device to generate a backscatter signal. For example, the zero-power device may modulate the received carrier signal according to the information to be sent to form a backscatter signal.

[0114] From the perspective of carrier signal carrier, it can be a base station, smart phone, smart gateway, etc.

[0115] In terms of frequency band, the radio waves used as carrier signals can be low frequency, medium frequency, high frequency, etc.

[0116] In terms of waveform, the radio wave used as the carrier signal can be a sine wave, square wave, triangle wave, pulse, rectangular wave, etc.

[0117] In addition, the carrier signal can be a continuous wave or a discontinuous wave (ie, a certain period of interruption is allowed).

[0118] Optionally, the carrier signal may be an existing signal in the 3GPP standard, such as SRS, PUSCH, PRACH, PUCCH, PDCCH, PDSCH, PBCH, or a WIFI signal or a Bluetooth signal.

[0119] Optionally, the carrier signal may also be implemented by adding a new signal, for example, adding a carrier signal dedicated to generating a backscatter signal.

[0120] It should be noted that in the embodiment of the present application, the power supply signal, the scheduling signal and the carrier signal can be the same signal, or they can be different signals. For example, the power supply signal can be used as a carrier signal, and the scheduling signal can also be used as a carrier signal, etc.

[0121] In some scenarios, due to the battery-free and low-cost characteristics of zero-power devices, large-scale deployment and maintenance-free of a large number of zero-power devices can be supported in communication systems (such as NR systems, WIFI systems, etc.).

[0122] In some scenarios, communication systems may consider supporting ambient energy-based Internet of Things (IoT) devices, such as ambient power enabled IoT (AMP IoT) devices. Ambient IoT devices can be defined as those that utilize ambient energy, such as radio frequency energy, light energy, solar energy, thermal energy, mechanical energy, and other ambient energy sources. These devices are similar to passive or semi-passive devices in zero-power communications.

[0123] In 802.11 technology, Wi-Fi devices transmit information based on physical layer protocol data unit (PPDU) frames. PPDU frames consist of a physical layer header and a data portion. As shown in Figure 6, the physical layer header of an 802.11a / g PPDU frame includes a short training field (STF), a long training field (LTF), and a signal (SIG) field. The STF is primarily composed of 10 short symbols (t1-t10), each of which is 0.8µs. It implements multiple functions, primarily frame synchronization and coarse frequency synchronization. Functions implemented in t1-t7 include signal detection, automatic gain control (AGC), and diversity selection, while functions implemented in t8-t10 include coarse frequency, offset estimation, and timing synchronization. The LTF is mainly used to achieve fine frequency synchronization and channel estimation. The SIG part carries information related to the data part, including the data transmission rate, the length of the data packet, the reserved bits, and the tail bits.

[0124] The data portion of the PPDU carries a Media Access Control (MAC) frame. As shown in Figure 7, the MAC frame format includes the following parts: a MAC header, a frame body, and a frame check sequence (FCS). The FCS field, which carries sent or received information, includes a 32-bit cyclic redundancy check (CRC) for error detection.

[0125] FIG8 shows a format of the frame control portion of a MAC header. As shown in FIG8 , the following information portions may be included:

[0126] 1. Protocol Version: used to indicate the protocol version of the PPDU, for example, the value is 0 or 1.

[0127] 2. Type: This field indicates the frame type of the PPDU frame. For example, it can be one of the following types:

[0128] a) Control frame: used for handshake communication and positive confirmation during contention, ending the non-contention period, etc.

[0129] b) Management frame: Mainly used for negotiation and relationship control between STA and AP, such as association, authentication, synchronization, etc.

[0130] c) Data frame: used to transmit data during contention period and non-contention period.

[0131] 3. Subtype: further determine the subtype of the frame type.

[0132] 4. The target DS (To DS:) indicates whether the frame is a frame sent by the Basic Service Set (BSS) to the DS.

[0133] 5. Source DS (From DS): Indicates whether the frame is sent by DS to BSS.

[0134] 6. More Fragments is used to indicate whether a long frame is segmented and whether there are other frames. If so, the value is set to 1.

[0135] 7. Retry: Indicates that the segment is a retransmitted frame of a previously transmitted segment.

[0136] 8. Power Management: Indicates the power management mode adopted by the STA after transmitting the frame.

[0137] 9. More Data: Indicates that there are many frames buffered in the STA. This is set to 1 when there is at least one data frame to be sent to the STA.

[0138] 10. Protected Frame: Indicates that the frame body is encrypted according to the algorithm. If the frame body contains data processed by the key, it is set to 1, otherwise it is set to 0

[0139] 11+ High Throughput Control (+HTC): Indicator bits related to the HT Control field. The Duration / ID field of the MAC header indicates how long the frame and its acknowledgment will occupy the signal. The Duration value is used to calculate the Network Allocation Vector (NAV).

[0140] The address field of the MAC header is used to indicate the following information:

[0141] Destination Address, Source Address, Transmitting Address (TA), Receiving Address (RA), BSS ID.

[0142] The Sequence Control field of the MAC header is used to filter duplicate frames.

[0143] MAC header Quality of Service (QoS) Control field: A new MAC layer field in 802.11e used for priority control. This field is present only when the data frame is of the QoS data subtype.

[0144] The HT Control field in the MAC header is a new MAC layer field in 802.11n. Since 802.11n, the MAC supports 40 Mbps bandwidth, combining two 20 Mbps bandwidths into a single 40 Mbps bandwidth. This field provides some control for high-throughput data. This field is present only when the frame is configured as a high-throughput frame.

[0145] Zero-power devices primarily draw their energy from the environment, such as through radio frequency signals. Therefore, communication between a device and network equipment is often affected by its energy status, making it unsuitable for frequent information reception from network devices. In contrast, communication systems often require periodic reception of public control information from network devices, such as beacon frames in Wi-Fi systems. This mechanism is difficult for zero-power devices to implement. Therefore, when zero-power devices are introduced into communication systems, how to receive public control information becomes a pressing issue.

[0146] 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 above related technologies can be combined arbitrarily with the technical solutions of the embodiments of the present application as optional 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 part of the following contents.

[0147] FIG9 is a schematic diagram of a wireless communication method 200 according to an embodiment of the present application. As shown in FIG9 , the method 200 includes at least part of the following:

[0148] S210: The network device sends a first signal to the environment energy AMP device, where the first signal includes system parameter update information.

[0149] In some embodiments, the AMP device may also be referred to as a zero-power device, a battery-free device, a maintenance-free device, an Ambient IoT device, or an AMP IoT device.

[0150] In some embodiments, an AMP device may be a class of devices defined based on device complexity, energy source, communication method, waveform characteristics, etc.

[0151] In some embodiments, an AMP device can be a device that communicates based on ambient energy. For example, the AMP device uses ambient energy such as radio frequency energy, light energy, solar energy, thermal energy, or mechanical energy to obtain energy for communication. In this case, the AMP device can be a zero-power device or a low-power device.

[0152] In other embodiments, the energy required for the operation of the AMP device may also come from the power supply of the device itself. In this case, the AMP device may be a low-power terminal.

[0153] In some embodiments, the AMP device may be a device of low complexity or a device that uses a new waveform, for example, a device that uses a low-order modulation method or a simple waveform or a signal with a smaller bandwidth for communication.

[0154] In some embodiments, the AMP device may be a device that communicates using a backscattering method.

[0155] In some embodiments, the network device may be a network device in a cellular communication system, such as a base station in an NR system, or an AP in a WIFI system, or a node with management and control functions in other communication systems, which is not limited in this application.

[0156] In some embodiments, when the network device is an AP in a WIFI system, the AMP device is also called an AMP STA.

[0157] In some embodiments, in a Wi-Fi system, the system parameters may include BSS parameter update information. In some embodiments, the updated BSS parameters may be carried in a beacon frame, for example, in an element in the beacon frame.

[0158] In some embodiments, the first signal may be sent in a broadcast manner, or in other words, sent through a broadcast channel.

[0159] In some embodiments, the system parameter update information includes first indication information and / or second indication information, wherein the first indication information is used to determine whether the system parameter has been updated, or whether a critical update has occurred, and the second indication information is used to determine the updated system parameter, or to send the location information of the updated system parameter in the second signal, and the second signal is used to carry the system parameter information.

[0160] Therefore, in an embodiment of the present application, a network device can indicate system parameter update information to an AMP device. The AMP device can then receive the system parameters based on the system parameter update information. For example, if the first indication information indicates that the system parameters have not been updated, the AMP device will not receive the system parameters, which is beneficial for energy conservation of the AMP device. For another example, the AMP device can also determine the updated system parameters based on the second indication information. Furthermore, the AMP device can only receive the updated system parameters, or, based on the location information of the updated system parameters, only receive the system parameters at the corresponding location. This can reduce the complexity of the AMP device receiving the system parameters and reduce the power consumption of the AMP device.

[0161] In some implementations, the first indication information may be 1 bit, and the value of the 1 bit is used to indicate whether the system parameter is updated. For example, a value of 1 indicates that the system parameter is updated, and a value of 0 indicates that the system parameter is not updated.

[0162] In some embodiments, the network device determines the status indicated by the first indication information based on whether the system parameters are updated within a period of time. For example, if the system parameters have not been updated compared to the current time and the previous period of time, the first indication information is used to indicate that the system parameters have not been updated; otherwise, it indicates that the system parameters have been updated.

[0163] In some other implementations, the first indication information may be used to indicate a value of the first information, and a change in the value of the first information is used to determine whether the system parameter has been updated. For example, if the value of the first information has changed relative to the value of the last received first information, the AMP device determines that the system parameter has been updated; otherwise, it determines that the system parameter has not been updated.

[0164] In some embodiments, when a system parameter is updated (or a significant update occurs), the network device adjusts the value of the first information.

[0165] For example, the first information may be system parameter update counter information. A system parameter update counter may be maintained in the network device. When the system parameters change, the network device may increase the count value of the counter. When the count value of the counter is updated, the network device may send a first signal to notify the AMP device that the system parameters have been updated.

[0166] In some specific embodiments, the network device is an access point device, and the system parameter update counter can be a BSS parameter update counter (BSS Parameter Update Counter), which is used to indicate whether the BSS parameters are updated, for example, whether the parameters in the element used to carry the BSS parameters in the Beacon frame are updated.

[0167] In some embodiments, the system parameters may include at least one of the following:

[0168] System parameters related to channel switching, system parameters related to power supply, and system parameters related to backscattering.

[0169] In some embodiments, the channel switching-related system parameters may include at least one of the following:

[0170] Channel Switch announce parameters, Extended Channel Switch announce parameters.

[0171] In some embodiments, the energy supply-related system parameters may include radio frequency channel parameters or radio frequency signal parameters used for energy supply.

[0172] In some embodiments, the backscatter-related system parameters may include channel- or signal-related parameters of the carrier used for backscatter.

[0173] In some embodiments, the updating of system parameters may include but is not limited to at least one of the following:

[0174] Inclusion of a Channel Switch announce element;

[0175] Inclusion of an Extended Channel Switch announce element;

[0176] Inclusion of an Operating Mode Notification element;

[0177] Modification to RF power source parameter;

[0178] Carrier parameter update (Modification to carrier parameter).

[0179] In some embodiments, the second indication information is used to indicate the updated system parameters (i.e., which system parameters are updated), or the type of updated system parameters, such as channel switching related system parameters, power supply related system parameters, or backscatter related system parameters, etc.

[0180] In some specific embodiments, the second indication information may be N bits, and different states of the N bits are used to indicate that different system parameters have been updated, where N is a positive integer. For example, the N bits may be 2 bits, and a value of 00 indicates that the system parameters have not been updated, a value of 01 indicates that channel switching related parameters have been updated, a value of 10 indicates that power supply related parameters have been updated, and a value of 11 indicates that backscatter related parameters have been updated.

[0181] In some other specific embodiments, the network device may also indicate whether each type of system parameter is updated by means of bit mapping.

[0182] For example, the second indication information can be 3 bits, corresponding to three system parameters, such as system parameters related to channel switching, system parameters related to power supply, and system parameters related to backscattering. The value of each bit is used to indicate whether the corresponding system parameter has been updated. For example, a value of 1 indicates that the corresponding system parameter has been updated, and a value of 0 indicates that the corresponding system parameter has not been updated.

[0183] In some embodiments, the first signal is a first PPDU. For example, when the network device is an AP, the AP may carry system parameter update information via the first PPDU.

[0184] It should be understood that in an embodiment of the present application, the first PPDU can be implemented using an existing PPDU frame. For example, a new information field is added to the existing PPDU to carry system parameter update information, or the reserved bit system parameter update information in the existing PPDU frame is used. Alternatively, a new PPDU frame can be defined to carry system parameter update information for the AMP device.

[0185] In some embodiments, the first PPDU may be a beacon frame, a null data PPDU (NULL data PPU, NDP), or other management frame, control frame or data frame.

[0186] In some embodiments, the system parameter update information and the system parameter information may be carried by one signal, or may be carried by different signals.

[0187] For example, the second signal is a second PPDU, and the first PPDU and the second PPDU may be the same PPDU, or may be different PPDUs.

[0188] The following describes the manner in which the system update information is carried in the first PPDU in conjunction with specific embodiments.

[0189] Embodiment 1: The system parameter update information is carried in the physical layer part of the first PPDU.

[0190] In some embodiments, the data portion of the first PPDU is used to carry system parameters, or the system parameters may also be carried in other PPDUs.

[0191] The physical layer portion of the first PPDU precedes the data portion, that is, the system parameter update information precedes the data portion. Therefore, the AMP device can obtain the system parameter update information by receiving the physical layer portion of the first PPDU. Furthermore, the AMP device can determine whether to receive the system parameters based on the system parameter update information. For example, if the first indication information indicates that the system parameters have not been updated, the AMP device will not receive the system parameters. If the system parameters are carried in the data portion of the first PPDU, the AMP device will not receive the data of the first PPDU. Alternatively, if the data parameters are carried in another PPDU, the AMP device will not receive the other PPDU.

[0192] It should be understood that in an embodiment of the present application, the network device can carry the system parameter update information through the reserved bits of the physical layer part of the first PPDU, or a new information field can be added to the physical layer part of the first PPDU to carry the system parameter update information. The present application does not limit this. The following is combined with specific examples to illustrate the specific carrying method of the system parameter update information in the physical layer part, but the present application is not limited to this.

[0193] Example 1-1: The physical layer part of the first PPDU includes a first preamble part, a second preamble part and a system parameter update information part, wherein the first preamble part is used to carry the preamble information of a non-AMP device, the second preamble part is used to carry the preamble information of an AMP device, and the system parameter update information part is used to carry system parameter update information.

[0194] In some embodiments, in the physical layer portion of the first PPDU, the first preamble portion precedes the second preamble portion, and the system parameter update information follows the second preamble portion.

[0195] Figure 10 shows a schematic diagram of the format of a first PPDU provided by an embodiment of the present application. As shown in Figure 10, the physical layer portion of the first PPDU may include a first preamble, a second preamble, and system parameter update information. The first preamble corresponds to a non-AMP device (e.g., a STA), and the second preamble corresponds to an AMP device. The first preamble can be used for synchronization and channel estimation of the non-AMP device, and the second preamble can be used for synchronization of the AMP device.

[0196] In some embodiments, the first preamble part may include at least one of an STF part, an LTF part, and a SIG part.

[0197] In some embodiments, the second preamble part may also include at least one of an STF part, an LTF part, and a SIG part.

[0198] In some embodiments, the first preamble portion is also called the traditional preamble portion, the second preamble portion is also called the AMP preamble portion, the STF portion in the traditional preamble portion is also called the traditional STF ((L-STF)) portion, the LTF portion is also called the traditional LTF ((L-LTF)) portion, the SIG portion is also called the traditional SIG ((L-SIG)) portion, and similarly, the SIG portion in the second preamble portion is also called the AMP-SIG portion. Figure 11 shows a schematic diagram of the format of the first preamble portion provided in an embodiment of the present application.

[0199] In some embodiments, the first preamble is sent via a traditional 802.11 wireless air interface, and the second preamble and system parameter update information are sent via an AMP wireless air interface, where the AMP wireless air interface is also called a zero-power wireless air interface, and the AMP wireless air interface may refer to an interface for communication between a network device and an AMP device.

[0200] In some embodiments, the system parameter update information portion is used to indicate BSS parameter update counter information. In this case, the system parameter update information portion is also called a BSS parameter update counter portion.

[0201] In some embodiments, when the data portion of the first PPDU is used to carry information sent to an AMP device, the data portion is also called an AMP data portion.

[0202] In some embodiments, the data portion of the first PPDU is used to carry system parameter information of the AMP device, or the system parameter information of the AMP device may also be carried in other PPDUs. The AMP device can then determine whether to receive the data portion of the first PPDU or other PPDUs based on the system parameter update information in the physical layer portion of the first PPDU.

[0203] For example, the first PPDU is a beacon frame, which is used to carry system parameter information of the AMP device. The AMP device can determine whether the system parameters are updated based on the physical layer part of the beacon frame, and further determine whether to receive the system parameter information carried by the data part of the beacon frame.

[0204] Embodiment 1-2: The physical layer part of the first PPDU includes a second preamble part and a system parameter update information part, wherein the second preamble part is used to carry the preamble information of the AMP device.

[0205] In this case, the first PPDU or AMP PPDU is, for example, a PPDU specifically defined for an AMP device and used to carry system parameter update information of the AMP device.

[0206] In some embodiments, the system parameter update information portion is between the second preamble portion and the data portion of the first PPDU.

[0207] In some embodiments, the second preamble part may also include at least one of an STF part, an LTF part, and a SIG part.

[0208] Figure 12 shows a schematic diagram of the format of another first PPDU provided by an embodiment of the present application. As shown in Figure 12, the physical layer portion of the first PPDU may include a second preamble portion and a system parameter update portion, wherein the system parameter update information portion is after the second preamble portion.

[0209] In some embodiments, the first PPDU is sent via an AMP wireless air interface, where the AMP wireless air interface is also called a zero-power wireless air interface, and the AMP wireless air interface may refer to an interface used for communication between a network device and an AMP device.

[0210] In some embodiments, the system parameter update information portion is used to indicate BSS parameter update counter information. In this case, the system parameter update information portion is also called a BSS parameter update counter portion.

[0211] In some embodiments, the second preamble part is also called the AMP preamble part, and the data part of the first PPDU is also called the AMP data part.

[0212] In some embodiments, the data portion of the first PPDU is used to carry system parameter information, or the system parameter information may also be carried in another PPDU. The AMP device may then determine whether to receive the data portion of the first PPDU or another PPDU based on the system parameter update information in the physical layer portion of the first PPDU.

[0213] For example, the first PPDU is a beacon frame, which is used to carry the system parameter information of the AMP device. The AMP device can determine whether the system parameters of the AMP device are updated based on the physical layer part of the beacon frame, and further determine whether to receive the system parameter information carried by the data part of the beacon frame.

[0214] Example 1-3: The physical layer part of the first PPDU includes a first preamble part and a second preamble part, wherein the first preamble part is used to carry the preamble information of a non-AMP device, the second preamble part is used to carry the preamble information of an AMP device, and the second preamble part is also used to indicate system parameter update information. For example, the second preamble part can explicitly or implicitly indicate the system parameter update information.

[0215] In this embodiment 1-3, the specific implementation of the first leading part refers to the relevant description of embodiment 1-1, and for the sake of brevity, it is not repeated here.

[0216] In some embodiments, the second preamble part may also include at least one of an STF part, an LTF part, and a SIG part.

[0217] In some embodiments, the system parameter update information is carried in the second preamble.

[0218] For example, the second preamble part includes a SIG (denoted as AMP-SIG) part, and the system parameter update information is carried in the AMP-SIG part.

[0219] In some other embodiments, the second preamble is used to implicitly indicate system parameter update information.

[0220] For example, the second preamble part is represented by a sequence, and different sequences are used to indicate different system parameter update information.

[0221] For example, multiple sequences can be defined to indicate different system parameter update information, and the multiple sequences can be of equal or unequal lengths. For example, if the system parameter update information is 1 bit, two sequences can be used to indicate whether the system parameter is updated.

[0222] Figure 13 shows a schematic diagram of the format of another first PPDU provided in an embodiment of the present application. As shown in Figure 13, the physical layer portion of the first PPDU may include a first preamble and a second preamble, where the second preamble includes the system parameter update information portion, or the second preamble is used to indicate the system parameter update information.

[0223] Embodiment 1-4: The physical layer part of the first PPDU includes a second preamble part, wherein the second preamble part is used to carry the preamble information of the AMP device, and the second preamble part is also used to indicate system parameter update information.

[0224] In this embodiment 1-4, the specific implementation of the second leading part refers to the relevant description of the second leading part in Figure 1-3, and for the sake of brevity, it is not repeated here.

[0225] In the embodiments 1-4, the first PPDU or AMP PPDU is, for example, a PPDU specifically defined for an AMP device, used to indicate system parameter update information of the AMP device.

[0226] Figure 14 shows a schematic diagram of the format of another first PPDU provided in an embodiment of the present application. As shown in Figure 14, the physical layer portion of the first PPDU may include a second preamble portion, the second preamble portion includes a system parameter update information portion, or the second preamble portion is used to indicate the system parameter update information.

[0227] It should be understood that in the examples of Figures 10 to 14 , the first PPDU includes a data portion. In other embodiments, the first PPDU may not include a data portion, for example, when the first PPDU is an NDP frame. Figures 15 to 18 illustrate schematic frame formats for carrying system parameter update information via NDP frames. The meanings of the various components in Figures 15 to 18 refer to the corresponding components in Figures 10 to 14 and are not further described here for the sake of brevity.

[0228] Embodiment 2: The system parameter update information is carried in the data portion of the first PPDU.

[0229] In some embodiments, the AMP device may receive the system parameters according to the system parameter update information in the first PPDU, wherein receiving the system parameter update information is more power-saving than receiving the system parameters.

[0230] In some embodiments, the first PPDU may be a frame that must be received during the communication between the AMP device and the AP. For example, some broadcast or unicast PPDU frames, specifically some NDP frames, data frames, or management frames. In the case where the AMP device must receive these frames, the network device may carry the system parameter update information through the data portion of these frames. For example, the system parameter update information may be carried as an element or a field in the frame body of the frame, or as an element or field in the MAC header. Figures 19 and 20 respectively show schematic diagrams of the format of carrying the system parameter update information through the MAC header and MAC frame body of the first PPDU.

[0231] In some embodiments, the system parameter update information is carried in a specific location in the data portion of the first PPDU. Thus, the AMP device can obtain the system parameter update information by obtaining the information in the specific location without having to obtain the entire data portion, which helps save power for the AMP device.

[0232] For example, the system parameter update information is carried in the first N elements or the first N fields of the data portion of the first PPDU, where N is a positive integer. The AMP device can then obtain the system parameter update information by receiving the information in the first N elements or fields of the data portion of the first PPDU, and further receive the system parameters based on the system parameter update information. For example, when the first indication information indicates that the system parameters have not been updated, the system parameters are not received, which is beneficial to energy saving of the AMP device. For another example, the updated system parameters are determined based on the second indication information. Further, the AMP device can only receive the updated system parameters, or, based on the location information of the updated system parameters, only receive the system parameters at the corresponding location. This can reduce the complexity of the AMP device receiving the system parameters and reduce the power consumption of the AMP device.

[0233] In some embodiments of the present application, the method 200 further includes:

[0234] The network device sends a second signal to the AMP device, where the second signal is used to carry system parameter information.

[0235] Correspondingly, the AMP device receives the second signal according to the system parameter update information.

[0236] In some embodiments, the second signal and the first signal are the same signal.

[0237] For example, the first signal is a first PPDU, the second signal is a second PPDU, the first PPDU and the second PPDU are the same PPDU, the system parameter update information is carried in the physical layer portion of the PPDU, and the system parameter information is carried in the data portion of the PPDU. Therefore, if the AMP device determines, based on receiving the physical layer portion of the first PPDU, that the system parameters have not been updated, it may not receive the data portion of the first PPDU, thereby saving power on the AMP device.

[0238] In some embodiments, the second signal and the first signal are different signals.

[0239] For example, the first signal is a first PPDU, the second signal is a second PPDU, the first PPDU and the second PPDU are different PPDUs, the system parameter update information is carried in the physical layer portion or data portion of the first PPDU, and the system parameter information is carried in the data portion of the second PPDU. Therefore, if the AMP device determines, by receiving the physical layer portion of the first PPDU, that the system parameters have not been updated, then it may not receive the second PPDU, thereby saving power on the AMP device.

[0240] In some embodiments, the system parameter information is carried in the first M elements or fields of the data portion of the second signal, where M is a positive integer. For example, the system parameter information is carried in the first M elements or fields of the data portion of the second PPDU. Therefore, the AMP device only needs to receive the first M elements or fields of the data portion of the second PPDU to obtain the system parameter information, without having to receive the entire data portion of the second signal, which helps save power for the AMP device.

[0241] In some embodiments, the system parameter information only includes the updated configuration of the updated system parameter. That is, the second signal only carries the updated configuration of the updated system parameter.

[0242] For example, if the system parameter update information indicates that a system parameter has been updated, the second signal only includes the updated configuration of the updated system parameter. Therefore, the AMP device only needs to receive the configuration of the updated system parameter, rather than the configuration of all system parameters, which is beneficial to power saving of the AMP device.

[0243] In some embodiments, the configuration of all system parameters is included, that is, the second signal only carries the configuration of all system parameters.

[0244] Optionally, in this case, the system parameter update information may include second indication information, where the second indication information is used to indicate the updated system parameter, or location information of the updated system parameter.

[0245] In some cases, in the data portion of the second signal, the position of the system parameters is fixed, and the AMP device and the network device have the same understanding of the position. Then, when the second indication information indicates that the updated system parameters have been updated, the AMP device can only receive information at the location where the updated system parameters are located, which is beneficial to power saving of the AMP device.

[0246] In other cases, the position of the system parameter in the data portion of the second signal is variable. When the second indication information indicates the position information of the updated system parameter, the AMP device may only receive the information at that position, which is beneficial to power saving of the AMP device.

[0247] In some embodiments, when the second PPDU includes the configuration of all system parameters, the configuration of the updated system parameters among all system parameters is carried in the first M elements or the first M fields of the data part of the second PPDU, where M is a positive integer.

[0248] Therefore, the AMP device only needs to receive the first M elements or the first M fields of the data part of the second PPDU to obtain updated system parameter information, which is beneficial to power saving of the AMP device.

[0249] In some embodiments, some second signals sent by the network device include only updated system parameter information, while other second signals include all system parameter information. The AMP device can determine which type of second signal to receive based on the system parameter update information. For example, when system parameters are updated, the AMP device receives only the second signal that carries the updated system parameter information; otherwise, the AMP device does not receive the second signal. Newly connected AMP devices must first receive the second signal that carries the complete system parameter information.

[0250] In summary, in the embodiments of the present application, a network device can indicate system parameter update information to an AMP device, and the AMP device can receive the system parameters based on the system parameter update information. For example, if the first indication information indicates that the system parameters have not been updated, the system parameters will not be received, which is beneficial for energy conservation of the AMP device. For another example, the AMP device can determine that the system parameters have been updated based on the second indication information. Furthermore, the AMP device can only receive the updated system parameters, or, based on the location information of the updated system parameters, only receive the system parameters at the corresponding location. This can reduce the complexity of the AMP device receiving the system parameters and reduce the power consumption of the AMP device.

[0251] The above text, in combination with Figures 9 to 20, describes in detail the method embodiment of the present application. The following text, in combination with Figures 21 to 25, describes in detail the device embodiment of the present application. It should be understood that the device embodiment and the method embodiment correspond to each other, and similar descriptions can refer to the method embodiment.

[0252] Figure 21 shows a schematic block diagram of a network device 400 according to an embodiment of the present application. As shown in Figure 21, the network device 400 includes:

[0253] The communication unit 410 is configured to send a first signal to the ambient energy AMP device, where the first signal includes system parameter update information.

[0254] In some embodiments, the system parameter update information includes first indication information and / or second indication information, the first indication information is used to determine whether the system parameter is updated, the second indication information is used to determine the updated system parameter or the location information of the updated system parameter in the second signal, and the second signal is used to carry the system parameter information.

[0255] In some embodiments, the network device is an access point device.

[0256] In some embodiments, the system parameter update information includes basic service set (BSS) parameter update information.

[0257] In some embodiments, the basic service set (BSS) parameter update information includes a count value of a BSS parameter update counter.

[0258] In some embodiments, the first signal is a first physical layer protocol data unit PPDU.

[0259] In some embodiments, the system parameter update information is carried in a physical layer portion of the first PPDU.

[0260] In some embodiments, the physical layer part of the first PPDU includes a first preamble part, a second preamble part and the system parameter update information, wherein the first preamble part is used to carry the preamble information of the non-AMP device, and the second preamble part is used to carry the preamble information of the AMP device.

[0261] In some embodiments, the physical layer portion of the first PPDU includes a second preamble portion and the system parameter update information, wherein the second preamble portion is used to carry preamble information of an AMP device.

[0262] In some embodiments, the system parameter update information is between the second preamble portion and the data portion of the PPDU.

[0263] In some embodiments, the physical layer portion of the first PPDU includes a first preamble portion and a second preamble portion, wherein the first preamble portion is used to carry preamble information of a non-AMP device, the second preamble portion is used to carry preamble information of an AMP device, and the second preamble portion is also used to indicate system parameter update information.

[0264] In some embodiments, the physical layer portion of the first PPDU includes a second preamble portion, wherein the second preamble portion is used to carry preamble information of the AMP device, and the second preamble portion is further used to indicate system parameter update information.

[0265] In some embodiments, the second preamble part is represented by a sequence, and different sequences are used to indicate different system parameter update information.

[0266] In some embodiments, the system parameter update information is carried in the second preamble.

[0267] In some embodiments, the second preamble part includes a signal part, and the system parameter update information is carried in the signal part.

[0268] In some embodiments, the first PPDU also includes a data portion.

[0269] In some embodiments, the first PPDU is a beacon frame.

[0270] In some embodiments, the first PPDU is a Null Data Physical Layer Protocol Data Unit (NDP).

[0271] In some embodiments, the system parameter update information is carried in a data portion of the first PPDU.

[0272] In some embodiments, the system parameter update information is carried in a specific location of the data portion of the first PPDU.

[0273] In some embodiments, the system parameter update information is carried in the first N elements or the first N fields of the data part of the first PPDU, where N is a positive integer.

[0274] In some embodiments, the communication unit 410 is further configured to:

[0275] A second signal is sent to the AMP device, where the second signal is used to carry system parameter information.

[0276] In some embodiments, the system parameter information includes only the updated configuration of the updated system parameters; or includes the configuration of all system parameters.

[0277] In some embodiments, the second signal is a second PPDU, and the system parameter information is carried in a data portion of the second PPDU.

[0278] In some embodiments, the data portion of the second PPDU includes the configuration of all system parameters, wherein the configuration of the updated system parameters among all system parameters is carried in the first M elements or the first M fields of the data portion of the second PPDU, where M is a positive integer.

[0279] Alternatively, in some embodiments, the communication unit may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip. The processing unit may be one or more processors.

[0280] It should be understood that the network device 400 according to the embodiment of the present application may correspond to the network device in the embodiment of the method of the present application, and the above-mentioned and other operations and / or functions of each unit in the network device 400 are respectively for realizing the corresponding processes of the network device in the method shown in Figures 9 to 20. For the sake of brevity, they will not be repeated here.

[0281] Figure 22 shows a schematic block diagram of an environmental energy AMP device 500 according to an embodiment of the present application. As shown in Figure 22, the network device 500 includes:

[0282] The communication unit 510 is configured to receive a first signal sent by a network device, where the first signal includes system parameter update information.

[0283] In some embodiments, the system parameter update information includes first indication information and / or second indication information, the first indication information is used to determine whether the system parameter is updated, the second indication information is used to determine the updated system parameter or send the location information of the updated system parameter in the second signal, and the second signal is used to carry the system parameter information.

[0284] In some embodiments, the network device is an access point device.

[0285] In some embodiments, the system parameter update information includes basic service set (BSS) parameter update information.

[0286] In some embodiments, the basic service set (BSS) parameter update information includes a count value of a BSS parameter update counter.

[0287] In some embodiments, the first signal is a first physical layer protocol data unit PPDU.

[0288] In some embodiments, the system parameter update information is carried in a physical layer portion of the first PPDU.

[0289] In some embodiments, the physical layer part of the first PPDU includes a first preamble part, a second preamble part and the system parameter update information, wherein the first preamble part is used to carry the preamble information of the non-AMP device, and the second preamble part is used to carry the preamble information of the AMP device.

[0290] In some embodiments, the physical layer portion of the first PPDU includes a second preamble portion and the system parameter update information, wherein the second preamble portion is used to carry preamble information of an AMP device.

[0291] In some embodiments, the system parameter update information is between the second preamble portion and the data portion of the PPDU.

[0292] In some embodiments, the physical layer portion of the first PPDU includes a first preamble portion and a second preamble portion, wherein the first preamble portion is used to carry preamble information of a non-AMP device, the second preamble portion is used to carry preamble information of an AMP device, and the second preamble portion is also used to indicate system parameter update information.

[0293] In some embodiments, the physical layer portion of the first PPDU includes a second preamble portion, wherein the second preamble portion is used to carry preamble information of the AMP device, and the second preamble portion is further used to indicate system parameter update information.

[0294] In some embodiments, the second preamble part is represented by a sequence, and different sequences are used to indicate different system parameter update information.

[0295] In some embodiments, the system parameter update information is carried in the second preamble.

[0296] In some embodiments, the second preamble part includes a signal part, and the system parameter update information is carried in the signal part.

[0297] In some embodiments, the first PPDU also includes a data portion.

[0298] In some embodiments, the first PPDU is a beacon frame.

[0299] In some embodiments, the first PPDU is a Null Data Physical Layer Protocol Data Unit (NDP).

[0300] In some embodiments, the system parameter update information is carried in a data portion of the first PPDU.

[0301] In some embodiments, the system parameter update information is carried in a specific location of the data portion of the first PPDU.

[0302] In some embodiments, the system parameter update information is carried in the first N elements or the first N fields of the data part of the first PPDU, where N is a positive integer.

[0303] In some embodiments, the communication unit 510 is further configured to:

[0304] In the case where the system parameters are updated, a second signal sent by the network device is received or updated system parameter information is obtained from the data portion of the first signal, where the second signal is used to carry the system parameter information.

[0305] In some embodiments, the system parameter information includes only the updated configuration of the updated system parameters; or includes the configuration of all system parameters.

[0306] In some embodiments, the second signal is a second PPDU, and the system parameter information is carried in a data portion of the second PPDU.

[0307] In some embodiments, the data portion of the second PPDU includes the configuration of all system parameters, wherein the configuration of the updated system parameters among all system parameters is carried in the first M elements or the first M fields of the data portion of the second PPDU, where M is a positive integer.

[0308] Alternatively, in some embodiments, the communication unit may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip. The processing unit may be one or more processors.

[0309] It should be understood that the AMP device 500 according to the embodiment of the present application may correspond to the AMP device in the embodiment of the method of the present application, and the above-mentioned and other operations and / or functions of each unit in the AMP device 500 are respectively for realizing the corresponding processes of the AMP device in the method shown in Figures 9 to 20. For the sake of brevity, they will not be repeated here.

[0310] Figure 23 is a schematic structural diagram of a communication device 600 provided in an embodiment of the present application. The communication device 600 shown in Figure 23 includes a processor 610, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0311] Optionally, as shown in FIG23 , the communication device 600 may further include a memory 620. 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.

[0312] The memory 620 may be a separate device independent of the processor 610 , or may be integrated into the processor 610 .

[0313] Optionally, as shown in FIG23 , the communication device 600 may further include a transceiver 630 , and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, to send information or data to other devices, or to receive information or data sent by other devices.

[0314] The transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include an antenna, and the number of antennas may be one or more.

[0315] Optionally, the communication device 600 may specifically be a network device in an embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the network device in each method in the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0316] Optionally, the communication device 600 may specifically be an AMP device in an embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the AMP device in each method in the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0317] Figure 24 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 700 shown in Figure 24 includes a processor 710, which can call and run a computer program from a memory to implement the method according to the embodiment of the present application.

[0318] Optionally, as shown in FIG24 , the chip 700 may further include a memory 720 , wherein the processor 710 may call and execute a computer program from the memory 720 to implement the method in the embodiment of the present application.

[0319] The memory 720 may be a separate device independent of the processor 710 , or may be integrated into the processor 710 .

[0320] Optionally, the chip 700 may further include an input interface 730. The processor 710 may control the input interface 730 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0321] Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0322] Optionally, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0323] Optionally, the chip can be applied to the AMP device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the AMP device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0324] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0325] FIG25 is a schematic block diagram of a communication system 900 provided in an embodiment of the present application. As shown in FIG25 , the communication system 900 includes an AMP device 910 and a network device 920 .

[0326] Among them, the terminal device 910 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 920 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they are not repeated here.

[0327] It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiment can be completed by hardware integrated logic circuits in the processor or software instructions. The above processor can 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 devices, discrete gate or transistor logic devices, or discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, 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 in combination with its hardware.

[0328] It is understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0329] It should be understood that the above-mentioned memories are exemplary but not restrictive. For example, the memories in the embodiments of the present application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM RAM (DR RAM), etc. In other words, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0330] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0331] Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0332] Optionally, the computer-readable storage medium can be applied to the AMP device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the AMP device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0333] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0334] Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0335] Optionally, the computer program product can be applied to the AMP device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the AMP device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0336] The embodiment of the present application also provides a computer program.

[0337] Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not described here.

[0338] Optionally, the computer program can be applied to the AMP device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the AMP device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0339] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0340] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0341] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0342] The units described as separate components may or may not be physically separate, and 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 these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0343] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0344] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0345] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art 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 should be based on the scope of protection of the claims.

Claims

1. A method of wireless communication, It is characterized in that include: The network device sends a first signal to the environment energy AMP device, where the first signal includes system parameter update information.

2. The method according to claim 1, It is characterized in that The system parameter update information includes first indication information and / or second indication information, the first indication information is used to determine whether the system parameter is updated, the second indication information is used to determine the updated system parameter or the location information of the updated system parameter in the second signal, and the second signal is used to carry the system parameter information.

3. The method according to claim 1 or 2, It is characterized in that The network device is an access point device.

4. The method according to any one of claims 1 to 3, It is characterized in that The system parameter update information includes basic service set BSS parameter update information.

5. The method according to claim 4, It is characterized in that The basic service set BSS parameter update information includes the count value of the BSS parameter update counter.

6. The method according to any one of claims 1 to 5, It is characterized in that The first signal is a first physical layer protocol data unit PPDU.

7. The method according to claim 6, It is characterized in that The system parameter update information is carried in the physical layer part of the first PPDU.

8. The method according to claim 7, It is characterized in that The physical layer part of the first PPDU includes a first preamble part, a second preamble part and the system parameter update information, wherein the first preamble part is used to carry the preamble information of the non-AMP device, and the second preamble part is used to carry the preamble information of the AMP device.

9. The method according to claim 7, It is characterized in that The physical layer part of the first PPDU includes a second leading part and the system parameter update information, wherein the second leading part is used to carry the leading information of the AMP device.

10. The method according to claim 8 or 9, It is characterized in that The system parameter update information is between the second preamble part and the data part of the PPDU.

11. The method according to claim 7, It is characterized in that The physical layer part of the first PPDU includes a first preamble part and a second preamble part, wherein the first preamble part is used to carry the preamble information of the non-AMP device, the second preamble part is used to carry the preamble information of the AMP device, and the second preamble part is also used to indicate system parameter update information.

12. The method according to claim 7, It is characterized in that The physical layer part of the first PPDU includes a second preamble part, wherein the second preamble part is used to carry the preamble information of the AMP device, and the second preamble part is also used to indicate system parameter update information.

13. The method according to claim 11 or 12, It is characterized in that The second leading part is represented by a sequence, and different sequences are used to indicate different system parameter update information.

14. The method according to claim 11 or 12, It is characterized in that The system parameter update information is carried in the second preamble part.

15. The method according to claim 14, It is characterized in that The second preamble part includes a signal part, and the system parameter update information is carried in the signal part.

16. The method according to any one of claims 6 to 15, It is characterized in that The first PPDU also includes a data portion.

17. The method according to claim 16, It is characterized in that The first PPDU is a beacon frame.

18. The method according to any one of claims 6 to 15, It is characterized in that The first PPDU is a null data physical layer protocol data unit NDP.

19. The method according to any one of claims 1 to 6, It is characterized in that The system parameter update information is carried in the data part of the first PPDU.

20. The method according to claim 19, It is characterized in that The system parameter update information is carried in a specific position of the data part of the first PPDU.

21. The method according to claim 20, It is characterized in that The system parameter update information is carried in the first N elements or the first N fields of the data part of the first PPDU, where N is a positive integer.

22. The method according to any one of claims 1 to 21, It is characterized in that The method further comprises: The network device sends a second signal to the AMP device, where the second signal is used to carry system parameter information.

23. The method according to claim 22, It is characterized in that The system parameter information includes only the updated configuration of the updated system parameters; or includes the configuration of all system parameters.

24. The method according to claim 22 or 23, It is characterized in that The second signal is a second PPDU, and the system parameter information is carried in a data portion of the second PPDU.

25. The method according to claim 24, It is characterized in that The data part of the second PPDU includes the configuration of all system parameters, wherein the configuration of the updated system parameters among all system parameters is carried in the first M elements or the first M fields of the data part of the second PPDU, wherein M is a positive integer.

26. A method of wireless communication, It is characterized in that include: The environment can AMP device receive a first signal sent by a network device, wherein the first signal includes system parameter update information.

27. The method according to claim 26, It is characterized in that The system parameter update information includes first indication information and / or second indication information, the first indication information is used to determine whether the system parameter is updated, the second indication information is used to determine the updated system parameter or send the location information of the updated system parameter in the second signal, and the second signal is used to carry the system parameter information.

28. The method according to claim 26 or 27, It is characterized in that The network device is an access point device.

29. The method according to any one of claims 26 to 28, It is characterized in that The system parameter update information includes basic service set BSS parameter update information.

30. The method according to claim 29, It is characterized in that The basic service set BSS parameter update information includes the count value of the BSS parameter update counter.

31. The method according to any one of claims 26 to 30, It is characterized in that The first signal is a first physical layer protocol data unit PPDU.

32. The method according to claim 31, It is characterized in that The system parameter update information is carried in the physical layer part of the first PPDU.

33. The method according to claim 32, It is characterized in that The physical layer part of the first PPDU includes a first preamble part, a second preamble part and the system parameter update information, wherein the first preamble part is used to carry the preamble information of the non-AMP device, and the second preamble part is used to carry the preamble information of the AMP device.

34. The method according to claim 32, It is characterized in that The physical layer part of the first PPDU includes a second leading part and the system parameter update information, wherein the second leading part is used to carry the leading information of the AMP device.

35. The method according to claim 33 or 34, It is characterized in that The system parameter update information is between the second preamble part and the data part of the PPDU.

36. The method according to claim 32, It is characterized in that The physical layer part of the first PPDU includes a first preamble part and a second preamble part, wherein the first preamble part is used to carry the preamble information of the non-AMP device, the second preamble part is used to carry the preamble information of the AMP device, and the second preamble part is also used to indicate system parameter update information.

37. The method according to claim 32, It is characterized in that The physical layer part of the first PPDU includes a second preamble part, wherein the second preamble part is used to carry the preamble information of the AMP device, and the second preamble part is also used to indicate system parameter update information.

38. The method according to claim 36 or 37, It is characterized in that The second leading part is represented by a sequence, and different sequences are used to indicate different system parameter update information.

39. The method according to claim 36 or 37, It is characterized in that The system parameter update information is carried in the second preamble part.

40. The method according to claim 39, It is characterized in that The second preamble part includes a signal part, and the system parameter update information is carried in the signal part.

41. The method according to any one of claims 31 to 40, It is characterized in that The first PPDU also includes a data portion.

42. The method according to claim 41, It is characterized in that The first PPDU is a beacon frame.

43. The method according to any one of claims 31 to 40, It is characterized in that The first PPDU is a null data physical layer protocol data unit NDP.

44. The method according to any one of claims 26 to 31, It is characterized in that The system parameter update information is carried in the data part of the first PPDU.

45. The method according to claim 44, It is characterized in that The system parameter update information is carried in a specific position of the data part of the first PPDU.

46. ​​The method according to claim 45, It is characterized in that The system parameter update information is carried in the first N elements or the first N fields of the data part of the first PPDU, where N is a positive integer.

47. The method according to any one of claims 32 to 46, It is characterized in that The method further comprises: In the case where the system parameters are updated, a second signal sent by the network device is received or updated system parameter information is obtained from the data portion of the first signal, wherein the second signal is used to carry the system parameter information.

48. The method according to claim 47, It is characterized in that The system parameter information includes only the updated configuration of the updated system parameters; or includes the configuration of all system parameters.

49. The method according to claim 47 or 48, It is characterized in that The second signal is a second PPDU, and the system parameter information is carried in a data portion of the second PPDU.

50. The method according to claim 49, It is characterized in that The data part of the second PPDU includes the configuration of all system parameters, wherein the configuration of the updated system parameters among all system parameters is carried in the first M elements or the first M fields of the data part of the second PPDU, wherein M is a positive integer.

51. A network device, It is characterized in that include: The communication unit is used to send a first signal to the ambient energy AMP device, wherein the first signal includes system parameter update information.

52. An environmental energy AMP device, It is characterized in that include: The communication unit is used to receive a first signal sent by a network device, where the first signal includes system parameter update information.

53. A network device, It is characterized in that include: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method as claimed in any one of claims 1 to 25.

54. An environmental energy AMP device, It is characterized in that include: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method as claimed in any one of claims 26 to 50.

55. A chip, It is characterized in that include: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 1 to 25, or a method as claimed in any one of claims 26 to 50.

56. A computer readable storage medium, It is characterized in that Used to store a computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 25, or the method according to any one of claims 26 to 50.

57. A computer program product, It is characterized in that Comprising computer program instructions which cause a computer to perform the method as claimed in any one of claims 1 to 25, or the method as claimed in any one of claims 26 to 50.

58. A computer program, It is characterized in that The computer program causes a computer to execute the method of any one of claims 1 to 25, or the method of any one of claims 26 to 50.

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