WO2023201724A1 - 一种无线通信方法及装置、设备 - Google Patents

一种无线通信方法及装置、设备 Download PDF

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Publication number
WO2023201724A1
WO2023201724A1 PCT/CN2022/088571 CN2022088571W WO2023201724A1 WO 2023201724 A1 WO2023201724 A1 WO 2023201724A1 CN 2022088571 W CN2022088571 W CN 2022088571W WO 2023201724 A1 WO2023201724 A1 WO 2023201724A1
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Prior art keywords
information
ppdu frame
zero
indication information
frame
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PCT/CN2022/088571
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English (en)
French (fr)
Inventor
贺传峰
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Oppo广东移动通信有限公司
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Priority to PCT/CN2022/088571 priority Critical patent/WO2023201724A1/zh
Publication of WO2023201724A1 publication Critical patent/WO2023201724A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the embodiments of the present application relate to the field of mobile communication technology, and specifically relate to a wireless communication method, device, and equipment.
  • the wireless fidelity (Wireless Fidelity, WiFi) communication process signal transmission and reception are determined based on the local clock, and the local clock of the station (Station, STA) will also be regularly aligned with the access point (Access Point, AP). Ensure that the timing between the STA and the AP is consistent, that is, the time remains synchronized, so that data can be sent and received at the corresponding time. For zero-power STA, the local timing accuracy is poor and the timing synchronization function with the AP cannot be accurately maintained. Therefore, accurate sending and receiving of information cannot be achieved.
  • Embodiments of the present application provide a wireless communication method, device, and equipment.
  • the zero-power station STA is instructed by the access point AP whether to receive the data part of the first physical layer data protocol unit (Physical Layer Protocol Data Unit, PPDU frame) frame.
  • first physical layer data protocol unit Physical Layer Protocol Data Unit, PPDU frame
  • the access point AP indicates to the zero-power consumption station STA whether to receive the data part of the first physical layer data protocol unit PPDU frame.
  • the zero-power consumption station STA receives the second information sent by the access point AP, where the second information is used to indicate the arrival of the first window.
  • the access point AP sends second information to the zero-power consumption site STA, where the second information is used to indicate arrival of the first window.
  • the wireless communication device provided by the embodiment of the present application is applied to the zero-power consumption site STA, and includes:
  • the first communication unit is configured to be instructed by the access point AP whether to receive the data part of the first physical layer data protocol unit PPDU frame.
  • the second communication unit is configured to indicate to the zero-power consumption station STA whether to receive the data part of the first physical layer data protocol unit PPDU frame.
  • the wireless communication device provided by the embodiment of the present application is applied to the zero-power consumption site STA, and includes:
  • the third communication unit is configured to receive second information sent by the access point AP, where the second information is used to indicate arrival of the first window.
  • the fourth communication unit is configured to send second information to the zero-power consumption site STA, where the second information is used to indicate arrival of the first window.
  • the communication device provided by the embodiment of the present application may be a zero-power station STA device in the above solution or an access point AP in the above solution.
  • the communication device includes a processor and a memory.
  • the memory is used to store computer programs, and the processor is used to call and run the computer programs stored in the memory to perform the above-mentioned wireless communication method.
  • the chip provided by the embodiment of the present application is used to implement the above wireless communication method.
  • the chip includes: a processor, configured to call and run a computer program from a memory, so that the device installed with the chip executes the above-mentioned wireless communication method.
  • the computer-readable storage medium provided by the embodiment of the present application is used to store a computer program, and the computer program causes the computer to execute the above-mentioned wireless communication method.
  • the computer program product provided by the embodiment of the present application includes computer program instructions, which cause the computer to execute the above-mentioned wireless communication method.
  • the computer program provided by the embodiment of the present application when run on a computer, causes the computer to perform the above-mentioned wireless communication method.
  • the AP indicates whether the zero-power STA receives the data part of the first PPDU frame, and the zero-power STA does not need to maintain accurate time synchronization with the AP to achieve correct reception of data.
  • Figure 1 is a schematic diagram of an application scenario according to the embodiment of the present application.
  • Figure 2 is a schematic diagram of an optional scenario of zero-power communication according to the embodiment of the present application.
  • Figure 3 is a schematic diagram of an optional scenario of backscatter communication according to an embodiment of the present application.
  • Figure 4 is an optional structural schematic diagram of a radio frequency energy module according to an embodiment of the present application.
  • Figure 5 is an optional structural schematic diagram of a zero-power terminal according to an embodiment of the present application.
  • Figure 6 is a schematic diagram of an optional frame structure of a PPDU frame in an embodiment of the present application.
  • Figure 7 is a schematic diagram of an optional frame structure of the data part of the PPDU frame in this embodiment of the present application.
  • Figure 8 is a schematic diagram of an optional frame structure of the MAC header in an embodiment of the present application.
  • Figure 9 is an optional flow diagram of a wireless communication method according to an embodiment of the present application.
  • Figure 10 is an optional flow diagram of the wireless communication method according to the embodiment of the present application.
  • Figure 11 is an optional flow diagram of the wireless communication method according to the embodiment of the present application.
  • Figure 12 is a schematic diagram of an optional frame structure of the first PPDU frame in this embodiment of the present application.
  • Figure 13 is a schematic diagram of an optional frame structure of the first PPDU frame in this embodiment of the present application.
  • Figure 14 is a schematic diagram of an optional frame structure of the first PPDU frame in this embodiment of the present application.
  • Figure 15 is an optional flow diagram of the wireless communication method according to the embodiment of the present application.
  • Figure 16 is an optional flow diagram of the wireless communication method according to the embodiment of the present application.
  • Figure 17 is an optional flow diagram of the wireless communication method according to the embodiment of the present application.
  • Figure 18 is a schematic diagram of an optional frame structure of the second PPDU frame in this embodiment of the present application.
  • Figure 19 is a schematic diagram of an optional frame structure of the SIGNAL field of the second PPDU frame in this embodiment of the present application.
  • FIG. 20 is an optional schematic diagram of the TWT mechanism in this embodiment of the present application.
  • Figure 21 is a schematic diagram of an optional frame structure of a PPDU frame in an embodiment of the present application.
  • Figure 22 is a schematic diagram of an optional frame structure of a PPDU frame in an embodiment of the present application.
  • Figure 23 is a schematic diagram of optional application scenarios of timing information in this embodiment of the present application.
  • Figure 24 is a schematic diagram of an optional frame structure of a PPDU frame in an embodiment of the present application.
  • Figure 25 is a schematic diagram of an optional application scenario of the trigger frame in this embodiment of the present application.
  • Figure 26 is a schematic diagram of optional application scenarios of RAW according to the embodiment of the present application.
  • Figure 27 is a schematic diagram of an optional application scenario of the trigger frame in this embodiment of the present application.
  • Figure 28 is a schematic diagram of an optional application scenario of the trigger frame in this embodiment of the present application.
  • Figure 29 is a schematic diagram of an optional application scenario of the trigger frame in this embodiment of the present application.
  • Figure 30 is an optional structural schematic diagram of a wireless communication device according to an embodiment of the present application.
  • Figure 31 is an optional structural schematic diagram of a wireless communication device according to an embodiment of the present application.
  • Figure 32 is an optional structural schematic diagram of a wireless communication device according to an embodiment of the present application.
  • Figure 33 is an optional structural schematic diagram of a wireless communication device according to an embodiment of the present application.
  • Figure 34 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • Figure 35 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • Figure 36 is a schematic block diagram of a communication system provided by an embodiment of the present application.
  • Figure 1 is a schematic diagram of an application scenario according to the embodiment of the present application.
  • communication system 100 may include zero-power STA 110 and access point 120 .
  • the zero-power STA 110 can communicate with the access point 120 via WiFi.
  • Multi-service transmission is supported between the zero-power consumption STA110 and the access point 120.
  • the access point 120 can provide communication coverage for a specific geographical area and can communicate with the zero-power STAs 110 located within the coverage area.
  • the access point 120 may be a relay station, an access point, a vehicle-mounted device, a wearable device, a hub, a switch, a network bridge, a router, etc.
  • the zero-power STA110 can be any terminal device that performs zero-power communication.
  • zero power STA 110 may refer to an access terminal, UE, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communications device, user agent, or user device.
  • Access terminals can be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, IoT devices, satellite handheld terminals, Wireless Local Loop (WLL) stations, Personal Digital Assistants (Personal Digital Assistant) , PDA), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or terminal devices in future evolution networks, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistants
  • handheld devices with wireless communication functions computing devices or other processing devices connected to wireless modems
  • vehicle-mounted devices wearable devices
  • the wireless communication system 100 may also include a network side device 130 that communicates with the access point 120.
  • the network side device 130 may include: 5G access network equipment, 5G Core network (5G Core, 5GC) equipment, for example, access and Mobility Management Function (Access and Mobility Management Function, AMF), another example, Authentication Server Function (AUSF), another example, User Plane Function (UPF), another example, Session Management Function (Session Management Function, SMF).
  • the network side device 130 may also include Evolved Packet Core (EPC) equipment of the LTE network, for example, Session Management Function + Core Network Data Gateway (Session Management Function + Core Packet Gateway, SMF + PGW- C) Equipment.
  • EPC Evolved Packet Core
  • SMF+PGW-C can simultaneously realize the functions that SMF and PGW-C can realize.
  • the above-mentioned network-side device may also be called by other names, or a new network entity may be formed by dividing the functions of the network-side device, which is not limited by the embodiments of this application.
  • Figure 1 exemplarily shows one AP and two zero-power STAs.
  • the wireless communication system 100 may include multiple APs and other numbers of zero-power STs may be included within the coverage of each AP.
  • the embodiments of the present application do not limit this.
  • FIG. 1 only illustrates the system to which the present application is applicable in the form of an example.
  • the method shown in the embodiment of the present application can also be applied to other systems.
  • system and “network” are often used interchangeably herein.
  • the term “and/or” in this article is just an association relationship that describes related objects, indicating that three relationships can exist. For example, A and/or B can mean: A exists alone, A and B exist simultaneously, and they exist alone. B these three situations.
  • the character "/" in this article generally indicates that the related objects are an "or” relationship.
  • the "instruction” mentioned in the embodiments of this application may be a direct instruction, an indirect instruction, or an association relationship.
  • A indicates B, which 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. relation.
  • the "correspondence” mentioned in the embodiments of this application can mean that there is a direct correspondence or indirect correspondence between the two, it can also mean that there is an associated relationship between the two, or it can mean indicating and being instructed. , configuration and configured relationship.
  • the "predefined” or “predefined rules” mentioned in the embodiments of this application can be achieved by pre-saving corresponding codes, tables or other available codes in the device (for example, including zero-power STA and AP).
  • predefined can refer to what is defined in the protocol.
  • the "protocol” may refer to a standard protocol in the communication field, which may include, for example, LTE protocol, NR protocol, and related protocols applied in future communication systems. This application does not limit this. .
  • a typical zero-power terminal is an RFID tag implemented through Radio Frequency Identification (RFID).
  • RFID is a technology that uses the spatial coupling of radio frequency signals to achieve contactless automatic transmission and identification of tag information.
  • RFID tags are also called “radio frequency tags” or “electronic tags”.
  • the most basic RFID system includes: electronic tag (TAG) and reader/writer (Reader/Writer).
  • Electronic tags include coupling components and chips. Each electronic tag has a unique electronic code and is placed on the target to mark the target object.
  • the reader/writer can not only read the information on the electronic tag, but also write the information on the electronic tag, and at the same time provide the electronic tag with the energy required for communication.
  • the passive electronic tag or passive electronic tag uses the energy obtained from the electromagnetic field generated in space to transmit the information stored in the electronic tag.
  • the reader reads Get the information and decode it to identify the electronic tag.
  • the RFID system 200 includes an electronic tag 201 and a reader/writer 202.
  • the reader/writer 202 sends an energy supply signal or a communication signal 203 to the electronic tag 201 and receives a backscattered signal 204 of the electronic tag 201 .
  • the electronic tag 201 includes an energy collection module 2011 , a backscatter communication module 2012 and a low-power computing module 2013 . It is understandable that the electronic tag 201 may also be equipped with a memory or a sensor.
  • the memory is used to store some basic information (such as electronic coding, etc.), and the sensor is used to obtain sensing data such as ambient temperature and ambient humidity.
  • Zero-power communication Communication based on zero-power terminals is called zero-power communication.
  • the key technologies of zero-power communication include: backscatter communication, energy harvesting, load modulation and coding.
  • the zero-power terminal 301 receives the carrier 303 sent by the backscatter reader 302, collects energy through the RF energy collection module 3011, and then collects the energy for low-power consumption.
  • the power consumption calculation module 3012 also called a logic module
  • This The information transmission process is called backscatter communication.
  • the transmission (TX) of the backscatter reader/writer 302 is connected to an amplifier (AMP), and the reception (RX) of the backscatter reader/writer 302 is connected to a low noise amplifier (LNA).
  • AMP amplifier
  • LNA low noise amplifier
  • Zero-power terminals do not actively transmit signals and achieve backscatter communication by modulating incoming signals
  • Zero-power terminals do not rely on traditional active power amplifier transmitters and use low-power computing units to greatly reduce hardware complexity;
  • Energy harvesting is implemented by the energy harvesting module.
  • the energy collection module collects space electromagnetic wave energy based on the principle of electromagnetic induction, and then obtains the energy required to drive the load circuit. For example, it obtains energy for low-power calculations, sensors, and memory reading, etc., and has achieved battery-free operation.
  • the structure of the energy harvesting module is shown in Figure 4, including: diode 401, capacitor 402 and resistor 403, thereby collecting space radio frequency (Radio Frequency, RF) energy.
  • RF Radio Frequency
  • one end of the capacitor 402 connected to the diode 401 is the anode.
  • Load modulation is a method often used by electronic tags to transmit data to readers. Load modulation adjusts the electrical parameters of the electronic tag's oscillation circuit according to the rhythm of the data flow, so that the size and phase of the electronic tag's impedance change accordingly, thereby completing the modulation process.
  • Load modulation technology mainly includes resistive load modulation and capacitive load modulation.
  • the load R L is connected in parallel with a resistor R 3 , and the resistor R 3 can be called the load modulation resistor.
  • the on and off of switch S is controlled by the data stream encoded by binary data, and the on or off of R 3 can be realized by the on and off of switch S.
  • the zero-power terminal also includes: resistor R 2 , inductor L 1 , inductor L 2 , and capacitor C 2 .
  • the switching of resistor R 3 will cause the voltage of the oscillator circuit to change, thereby achieving Amplitude Shift Keying (ASK) modulation, that is, by adjusting the amplitude of the backscattered signal of the zero-power device to achieve signal modulation and transmission.
  • ASK Amplitude Shift Keying
  • the load is connected in parallel with a capacitor.
  • FSK Frequency Shift Key
  • the zero-power terminal uses load modulation to perform information modulation on the incoming signal, thereby realizing the backscattering communication process.
  • the data transmitted by zero-power devices can use different encoding forms to represent binary "1" and "0".
  • Commonly used encoding methods include one of the following encoding methods: Non Return Zero (NRZ) encoding, Manchester encoding, Unipolar RZ encoding, Differential Biphase ( Differential Binary Phase (DBP) encoding, Miller encoding and differential encoding.
  • NRZ Non Return Zero
  • DBP Differential Biphase
  • Miller encoding Miller encoding
  • differential encoding can be understood as using different pulse signals to represent 0 and 1.
  • zero-power terminals can be divided into the following types:
  • a zero-power terminal does not need a built-in battery.
  • the zero-power terminal When a zero-power terminal is close to a network device, the zero-power terminal is within the near field range formed by the antenna radiation of the network device. Therefore, the zero-power terminal antenna generates an induced current through electromagnetic induction, and the induced current drives the low-power chip circuit of the zero-power terminal to realize the demodulation of the forward link signal and the signal modulation of the backward link.
  • zero-power terminals use backscatter implementations to transmit signals.
  • Passive zero-power terminals do not require built-in batteries to drive either the forward link or the reverse link, and are truly zero-power terminals.
  • Passive zero-power terminals do not require batteries, and the RF circuit and baseband circuit are very simple. For example, they do not require LNA, PA, crystal oscillator, analog-to-digital converter (Analog-to-Digital Converter, ADC) and other devices. Therefore, passive zero-power terminals Power consumption terminals have many advantages such as small size, light weight, very cheap price, and long service life.
  • the semi-passive zero-power terminal itself does not install a conventional battery, but can use an energy collection module to collect radio wave energy and store the collected energy in an energy storage unit (such as a capacitor). After the energy storage unit obtains energy, it can drive the low-power chip circuit of the zero-power terminal. Realizes the demodulation of the forward link signal and the signal modulation of the backward link. For backscatter links, semi-passive zero-power terminals use backscatter implementations to transmit signals.
  • the semi-passive zero-power terminal does not require a built-in battery to drive either the forward link or the reverse link. Although the energy stored in the capacitor is used in operation, the energy comes from the radio energy collected by the energy harvesting module. Therefore, Semi-passive zero-power terminal is also a true zero-power terminal.
  • Semi-passive zero-power terminals inherit many advantages of passive zero-power terminals, and have many advantages such as small size, light weight, very cheap price, and long service life.
  • the zero-power terminals used in some scenarios can also be active zero-power terminals, and active zero-power terminals can have built-in batteries.
  • the battery is used to drive the low-power chip circuit of the zero-power terminal to realize the demodulation of the forward link signal and the signal modulation of the backward link.
  • active zero-power terminals use backscatter implementations to transmit signals. Therefore, the zero power consumption of this type of terminal is mainly reflected in the fact that signal transmission in the reverse link does not require the terminal's own power, but uses backscattering.
  • Active zero-power terminal has a built-in battery that supplies power to the RFID chip to increase the reading and writing distance of the tag and improve the reliability of communication. It is used in some scenarios that have relatively high requirements on communication distance, read latency, etc.
  • the PPDU frame includes a physical layer part and a data part.
  • the physical layer part of 802.11a/g includes: physical layer preamble and physical layer header.
  • the physical layer preamble includes: Short Training Field (STF), Long Training Field (Long Training Field, LTF), and the physical layer header includes the following fields: Signaling (SIGNAL).
  • SIGNAL Signaling
  • STF consists of 10 short symbols (t1-t10). Each symbol is 0.8us. It contains many functions, mainly realizing frame synchronization and coarse frequency synchronization.
  • the functions of t1-t7 include: Signal Detect (Signal Detect), Automatic Gain Control (AGC) and Antenna Selection (Diversity Selection) functions.
  • the functions of t8-t10 include: Coarse Freq (Coarse Freq), Offset Offset Estimation and Timing Synchronize functions.
  • LTF enables fine frequency synchronization and channel estimation.
  • SIGNAL carries information related to the data part, including: data transmission rate, data packet length information (Length), reserved bits and tail bits.
  • the data part of the PPDU frame carries the Medium Access Control (MAC) frame.
  • the frame format of the MAC frame includes: MAC header (header), frame body (frame body) part, and frame detection Sequence (Frame Check Sequence, FCS), in which the MAC header part includes the following fields: Frame control (Frame control), Duration/ID (Duration/ID), Address 1 (Address 1), Address 2 (Address 2), Address 3 (Address 3), Sequence Control (Sequence Control), Address 4, Quality of Service (QoS) Control, High Throughput Control (HT Control).
  • Frame control Frae control
  • Duration/ID Duration/ID
  • Address 1 Address 1
  • Address 2 Address 2
  • Address 3 Address 3
  • Sequence Control Sequence Control
  • Address 4 Quality of Service
  • QoS Quality of Service
  • HT Control High Throughput Control
  • the Frame control field of the MAC header contains the following information:
  • Control frame used for handshake communication and forward confirmation during competition, ending the non-competition period, etc.
  • Management frame mainly used for negotiation and relationship control between STA and AP, such as association, authentication, synchronization, etc.;
  • Subtype indicates the subtype to further determine the frame type
  • To DS Indicates whether the frame is a frame sent to DS by the Basic Service Set (BSS);
  • From DS Indicates whether the frame is a frame sent by DS to BSS;
  • More Fragment Used to describe the situation when long frames are fragmented and whether there are other frames. If so, the value is set to 1;
  • Retry Indicates that the segment is a retransmission frame of a previously transmitted segment
  • More Data Indicates that there are many frames cached in the station, that is, it is set to 1 when there is at least one data frame to be sent to the STA;
  • 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;
  • the Duration/ID field indicates how long the frame and its acknowledgment frame will occupy the channel.
  • the Duration value is used for Network Allocation Vector (NAV) calculation.
  • NAV Network Allocation Vector
  • Sequence Control field used to filter duplicate frames, represented by a 12-bit sequence number (Sequence Number) representing a MAC Service Data Unit (MAC Server Data Unit, MSDU) or a MAC Management Service Data Unit (MAC Management Server Data Unit, MMSDU) and Each fragment of MSDU and MMSDU is composed of a 4-digit fragment number (Fragment Number).
  • Sequence Number sequence number representing a MAC Service Data Unit (MAC Server Data Unit, MSDU) or a MAC Management Service Data Unit (MAC Management Server Data Unit, MMSDU) and Each fragment of MSDU and MMSDU is composed of a 4-digit fragment number (Fragment Number).
  • QoS Control field A new MAC layer field in 802.11e, used for priority control. This field is only available when the data frame is a QOS data subtype.
  • HT Control field a new MAC layer field in 802.11n. Starting from 802.11n, MAC began to support 40M bandwidth, which is to merge the original two 20M bandwidths into one 40M bandwidth. This field provides some control for high-throughput data. This field is only available when the frame is set to high-throughput frame.
  • Frame Body(Data) Information or data sent or received.
  • FCS Includes 32-bit Cyclic Redundancy Checksum (CRC) for error detection.
  • zero-power terminals can be passive, they do not have batteries and need to obtain energy from the external environment to work, such as collecting energy through radio frequency signals, natural light, pressure, heat, etc.
  • the acquisition of these energies cannot provide stable energy for the operation of zero-power terminals, including clock circuits that drive zero-power terminals.
  • the zero-power clock circuit part often uses a simplified circuit of an RC oscillator. The timing, frequency, and phase of this circuit The errors are relatively large.
  • the measured error of the RC oscillator is about 0.89%.
  • the clock accuracy of current 802.11 equipment is as high as ⁇ 20ppm, which is achieved by a high-precision crystal oscillator.
  • Zero-power terminals cannot obtain accurate clocks, which results in the inability to send and receive correct data.
  • the impact on communication of zero-power terminals being unable to obtain accurate clocks is not considered.
  • the wireless communication method provided by the embodiment of this application is shown in Figure 9 and is applied to zero-power STA, including:
  • the zero-power consumption station STA is instructed by the access point AP whether to receive the data part of the first physical layer data protocol unit PPDU frame.
  • a zero-power STA can also be understood as a low-power device or a zero-power terminal connected to an AP.
  • a zero-power STA can be passive, semi-passive, or active.
  • Zero-power STA and connected AP can form a zero-power Internet of Things.
  • the AP sends the first PPDU frame to the zero-power STA, where the first PPDU frame may be any PPDU frame sent by the AP to the zero-power STA.
  • the frame type of the first PPDU frame includes but is not limited to: beacon frame, association request frame, detection request frame, etc. This embodiment of the present application does not place any limitation on the frame type of the first PPDU frame.
  • the first AP also indicates to the zero-power STA whether to receive the data portion of the first PPDU frame. At this time, the zero-power STA is instructed by the AP whether to receive the data part of the first PPDU frame.
  • the AP only instructs the zero-power ST whether to receive the data part of the first PPDU frame. Whether the zero-power STA receives the data part of the first PPDU frame can be decided by the zero-power STA itself.
  • the zero-power STA determines whether to receive the data part of the first PPDU frame, and receives or does not receive the first PPDU frame according to the judgment result. data part.
  • the zero-power consumption STA does not judge whether to receive the data part of the first PPDU frame.
  • the AP instructs the zero-power STA whether to receive the data part of the first PPDU frame.
  • the zero-power STA does not maintain accurate time synchronization with the AP, it can be informed through the AP's instruction. Whether to receive the data part of the first PPDU frame, so as to not affect the reception of data in the scenario where the zero-power STA does not maintain accurate time synchronization with the AP, and ensure the low complexity and low power consumption of the zero-power STA.
  • the zero-power STA is instructed by the AP whether to receive the data part of the first PPDU frame, including:
  • the zero-power STA receives the first information sent by the AP, and the first information is used to indicate whether the zero-power STA receives the first PPDU frame; or, the first information is used to indicate that the zero-power STA receives the first PPDU frame. Whether the zero-power consumption STA receives the data part of the first PPDU frame.
  • the zero-power STA receives the first information sent by the AP, and the first information is used to indicate whether the zero-power STA receives the first PPDU frame. If the first information is used to instruct the zero-power STA to receive the first PPDU frame, the zero-power STA is instructed by the AP to receive the data part of the first PPDU frame, that is, the AP instructs the zero-power STA to receive the data part of the first PPDU frame.
  • the zero-power STA is instructed by the AP not to receive the data part of the first PPDU frame, that is, the AP instructs the zero-power STA not to receive the data part of the first PPDU frame. data part.
  • the first information indicates whether the zero-power consumption STA receives the first PPDU frame
  • the first information is independent of the first PPDU frame.
  • the zero-power STA receives the first information sent by the AP, and the first information is used to indicate whether the zero-power STA receives the data part of the first PPDU frame. If the first information is used to instruct the zero-power STA to receive the data part of the first PPDU frame, then the zero-power STA is instructed by the AP to receive the data part of the first PPDU frame, that is, the AP instructs the zero-power STA to receive the data part of the first PPDU frame. data part.
  • the zero-power STA is instructed by the AP not to receive the data part of the first PPDU frame, that is, the AP instructs the zero-power STA not to receive the first PPDU frame.
  • the data part of the PPDU frame is used to indicate that the zero-power STA does not receive the data part of the first PPDU frame.
  • the first information indicates whether the zero-power consumption STA receives the data part of the first PPDU frame
  • the first information may be carried on the first PPDU frame.
  • the zero-power consumption terminal can receive each PPDU frame. After receiving a PPDU frame, the zero-power STA parses the received PPDU frame, obtains the first information, and determines whether to receive the data part of the PPDU frame based on the first information.
  • the AP sends the first information to the zero-power STA, and the zero-power STA receives the first information sent by the AP.
  • the first information is used by the AP to indicate whether the zero-power STA receives the data part of the first PPDU frame.
  • the time of the zero-power STA and the AP are not accurately synchronized, it can know whether it is necessary to receive the data part of the first PPDU frame, ensuring the low complexity and low power consumption of the zero-power STA.
  • the wireless communication method provided by the embodiment of this application is shown in Figure 10, applied to AP, and includes:
  • the access point AP indicates whether the zero-power consumption station STA receives the data part of the first physical layer data protocol unit PPDU frame.
  • Zero-power STA can also be understood as a low-power device connected to the AP.
  • Zero-power STA can be passive, semi-passive, or active.
  • Zero-power STA and connected AP can form a zero-power Internet of Things.
  • the AP sends the first PPDU frame to the zero-power STA.
  • the first PPDU frame may be any PPDU frame sent by the AP to the zero-power STA.
  • the frame type of the first PPDU frame includes but is not limited to: Beacon frame, association request frame, detection request frame, etc. This embodiment of the present application does not place any limitation on the frame type of the first PPDU frame.
  • the AP also indicates to the zero-power STA whether to receive the data portion of the first PPDU frame. At this time, the zero-power STA is instructed by the AP whether to receive the data part of the first PPDU frame.
  • the AP only instructs the zero-power ST whether to receive the data part of the first PPDU frame. Whether the zero-power STA receives the data part of the first PPDU frame can be decided by the zero-power STA itself.
  • the zero-power STA determines whether to receive the data part of the first PPDU frame, and receives or does not receive the first PPDU frame according to the judgment result. data part.
  • the zero-power consumption STA does not judge whether to receive the data part of the first PPDU frame.
  • the AP instructs the zero-power STA whether to receive the data part of the first PPDU frame.
  • the zero-power STA does not maintain accurate time synchronization with the AP, it can be informed through the AP's instruction. Whether to receive the data part of the first PPDU frame, so as to not affect the reception of data in the scenario where the zero-power STA does not maintain accurate time synchronization with the AP, and ensure the low complexity and low power consumption of the zero-power terminal.
  • the AP indicates whether the zero-power STA receives the data portion of the first PPDU frame, including:
  • the AP sends first information to the zero-power STA, where the first information is used to indicate whether the zero-power STA receives the first PPDU frame; or, the first information is used to indicate whether the zero-power STA receives the first PPDU frame. Whether the zero-power STA receives the data part of the first PPDU frame.
  • the zero-power STA receives the first information sent by the AP, and the first information is used to indicate whether the zero-power STA receives the first PPDU frame. If the first information is used to instruct the zero-power STA to receive the first PPDU frame, the zero-power STA is instructed by the AP to receive the data part of the first PPDU frame, that is, the AP instructs the zero-power STA to receive the data part of the first PPDU frame.
  • the zero-power STA is instructed by the AP not to receive the data part of the first PPDU frame, that is, the AP instructs the zero-power STA not to receive the data part of the first PPDU frame. data part.
  • the first information indicates whether the zero-power consumption STA receives the first PPDU frame
  • the first information is independent of the first PPDU frame.
  • the zero-power STA receives the first information sent by the AP, and the first information is used to indicate whether the zero-power STA receives the data part of the first PPDU frame. If the first information is used to instruct the zero-power STA to receive the data part of the first PPDU frame, then the zero-power STA is instructed by the AP to receive the data part of the first PPDU frame, that is, the AP instructs the zero-power STA to receive the data part of the first PPDU frame. data part.
  • the zero-power STA is instructed by the AP not to receive the data part of the first PPDU frame, that is, the AP instructs the zero-power STA not to receive the first PPDU frame.
  • the data part of the PPDU frame is used to indicate that the zero-power STA does not receive the data part of the first PPDU frame.
  • the first information indicates whether the zero-power consumption STA receives the data part of the first PPDU frame
  • the first information may be carried on the first PPDU frame.
  • the AP sends the first information to the zero-power STA, and the zero-power STA receives the first information sent by the AP.
  • the first information is used by the AP to indicate whether the zero-power STA receives the data part of the first PPDU frame.
  • the time of the zero-power STA and the AP are not accurately synchronized, it can know whether it is necessary to receive the data part of the first PPDU frame, ensuring the low complexity and low power consumption of the zero-power STA.
  • the wireless communication method provided by the embodiment of this application is shown in Figure 11 and is applied to a communication system including AP and zero-power STA, including:
  • the AP sends the first information to the zero-power STA.
  • the first information is used to indicate whether the zero-power consumption STA receives the first PPDU frame
  • the first information is used to indicate whether the zero-power consumption STA receives the data part of the first PPDU frame.
  • the zero-power STA determines, based on the first information, whether the AP instructs the zero-power STA to receive the data part of the first PPDU frame.
  • the zero-power STA determines based on the first information that the AP instructs the zero-power STA to receive the data part of the first PPDU frame.
  • the zero-power STA is instructed by the AP not to receive the data part of the first PPDU frame, that is, the AP instructs the zero-power STA not to receive the first PPDU frame.
  • the data part of the PPDU frame The zero-power STA determines based on the first information that the AP instructs the zero-power STA not to receive the data part of the first PPDU frame.
  • the zero-power STA is Indicates receiving the data part of the first PPDU frame, that is, the AP instructs the zero-power STA to receive the data part of the first PPDU frame.
  • the zero-power STA determines based on the first information that the AP instructs the zero-power STA to receive the first PPDU frame. data part.
  • the zero-power STA is instructed by the AP not to receive the data part of the first PPDU frame, that is, the AP instructs the zero-power STA not to receive the first PPDU frame.
  • the data part of the PPDU frame The zero-power STA determines based on the first information that the AP instructs the zero-power STA not to receive the data part of the first PPDU frame.
  • the first information includes at least one of the following, including:
  • the first indication information is used to indicate the frame type of the first PPDU frame
  • the second indication information is used to indicate first time information, and the first time information corresponds to the time of receiving the first PPDU frame;
  • the third indication information is used to indicate the receiving end of the first PPDU frame.
  • the first information may include one or more of first indication information, second indication information, and third indication information.
  • the AP indicates the frame type of the first PPDU frame to the zero-power STA through the first indication information, and the zero-power STA determines whether the first PPDU frame is a target reception frame according to the frame type indicated by the first indication information.
  • the frame type of the target received frame is the target frame type.
  • the first indication information when the first indication information indicates that the frame type of the first PPDU frame is a target frame type, the first indication information is used to instruct the zero-power STA to receive the first The data part of the PPDU frame.
  • the target frame type is the PPDU frame that currently needs to be received, that is, the frame type of the target received frame.
  • the first indication information indicates that the frame type of the first PPDU frame is the target frame type
  • the first PPDU frame is the target reception frame
  • the AP notifies the zero-power STA that the current first PPDU frame is the target reception frame through the first indication information.
  • the AP instructs the zero-power STA to receive the first PPDU frame through the first indication information indicating the target frame type.
  • the AP instructs the zero-power STA not to receive the first PPDU frame through the first indication information. data part.
  • the first information does not carry the first indication information indicating the target frame type, the first PPDU frame is not the target reception frame, and the AP instructs the zero-power STA not to receive the data part of the first PPDU frame.
  • the target frame type can be determined by the zero-power STA according to the communication requirements, such as: Beacon frame, association request frame, data frame, acknowledgment (ACK) frame, etc.
  • the first PPDU frame whose frame type is the target frame type may be called a target reception frame that needs to be received.
  • the AP may send the first indication information for the first PPDU frame only when sending the first PPDU frame whose frame type is the target frame type, and the first indication information indicates the target frame type.
  • the zero-power consumption STA receives First indication information, it is determined that the AP instructs the zero-power STA to receive the data part of the first PPDU frame.
  • the target frame type is a Beacon frame.
  • the first indication information is sent to the zero-power STA, and the first indication information indicates the Beacon frame.
  • the zero-power consumption STA receives Upon receiving the first indication information indicating Beacon, it is determined that the AP is instructed to receive the first PPDU frame for which the current first indication information is directed, and the first PPDU frame is a Beacon frame.
  • the target frame type is a Beacon frame.
  • the first indication information indicating the Beacon frame is not sent to the zero-power STA.
  • the zero-power STA does not receive the first Indication information, determine that the AP has instructed not to receive the first PPDU frame for which the current first indication information is directed, and the first PPDU frame is not a Beacon frame.
  • the AP may also send first indication information for the first PPDU frame when sending the first PPDU frame, and the first indication information indicates the frame type of the first PPDU frame; the zero-power STA receives the first indication information and determines the If the frame type indicated by the indication information is the target frame type, it is determined that the AP instructs the zero-power STA to receive the data part of the first PPDU frame.
  • the target frame type is a Beacon frame.
  • the first indication information sent to the zero-power STA is information 1.
  • the frame type indicated by information 1 is a Beacon frame.
  • the first indication information received by Zero Power Consumption is Information 1, and it is determined based on Information 1 that the first PPDU frame is a Beacon frame, it is determined based on Information 1 that the AP is instructed to receive the first PPDU frame.
  • the target frame type is a Beacon frame.
  • the first indication information sent to the zero-power STA is information 2.
  • Information 2 The indicated frame type is a CTS frame.
  • the first indication information received at zero power consumption is information 2
  • it is determined based on information 2 that the first PPDU frame is a CTS frame it is determined based on information 2 that the AP has instructed not to receive the first PPDU frame.
  • the first indication information includes one of the following: type information or subtype information.
  • Type information can be understood as type, which is used to indicate the type of control frame, management frame or data frame.
  • the control frame is used for handshake communication and forward confirmation during competition, ending the non-competition period, etc., such as: Request to Send (RTS) ) frame, CTS frame, ACK frame;
  • management frame is used for negotiation and relationship control between zero-power STA and AP, such as: Beacon frame, Association frame, etc.; data frame is used during the contention period and non-contention period. transfer data.
  • the subtype information can be understood as subtype, and the combination of subtype and type is used to determine the frame type of the first PPDU frame.
  • the type information is 01 indicating a control frame
  • the subtype is 1100
  • the frame type is a CTS frame.
  • the type information is 00 indicating a management frame
  • the subtype is 1000
  • the frame type is a Beacon frame.
  • the first indication information is a first feature sequence
  • the first feature sequence is a feature sequence that identifies the frame type of the first PPDU frame.
  • the frame type indicated by the first feature sequence is the target frame type.
  • the frame type of the target frame is frame type 1
  • the first feature sequence corresponding to frame type 1 is sequence 1.
  • different frame types correspond to different first feature sequences.
  • the first feature sequence corresponding to frame type 1 is sequence 1
  • the first feature sequence corresponding to frame type 2 is sequence 2.
  • the first feature sequence may include type information and/or subtype information, or may be a customized sequence.
  • the first indication information is a first physical preamble
  • the first physical preamble is a physical layer preamble that identifies the frame type of the first PPDU frame.
  • the frame type indicated by the first physical preamble is the target frame type.
  • the frame type of the target frame is frame type 1
  • the first physical preamble corresponding to frame type 1 is preamble 1.
  • different frame types correspond to different physical preambles.
  • the first physical preamble corresponding to frame type 1 is physical preamble 1
  • the first physical preamble corresponding to frame type 2 is physical preamble 2.
  • the first physical preamble sent by the AP to the zero-power STA is determined according to the frame type of the first PPDU frame, and is not fixed.
  • the relationship between the first indication information and the first PPDU frame includes one of the following:
  • Relationship A1 the first indication information is independent of the first PPDU frame.
  • Relationship A2 the first indication information is carried on the first PPDU frame.
  • the first indication information is independent of the first PPDU frame.
  • the first indication information may be sent from the AP to the zero-power STA at the same time as the first PPDU frame, or may be sent from the AP to the zero-power STA separately.
  • the zero-power STA After receiving the first indication information, the zero-power STA determines that the frame type of the first PPDU frame is the target frame type based on the first indication information. Then the first indication information instructs the zero-power STA to receive the first PPDU frame, that is, it instructs the zero-power STA to receive the first PPDU frame.
  • the first indication information is carried on the first PPDU frame.
  • the zero-power STA receives the first PPDU frame, parses the received first PPDU frame, and obtains the first indication information. If the first indication information indicates the target frame type, the zero-power STA determines that it is instructed by the AP to receive the first PPDU frame. The data portion of a PPDU frame.
  • the first indication information is carried in the MAC header of the first PPDU frame.
  • the zero-power STA receives the MAC header of the data part of the first PPDU frame.
  • the zero-power STA needs to receive the data part and perform decoding and correction. Check to determine the frame type. If the zero-power STA determines that the frame type is the target frame type, it continues to receive other data in the data part of the first PPDU frame. It is understandable that the zero-power STA needs the information carried in the MAC part of the first PPDU frame to determine whether the frame type of the currently received first PPDU frame is the target frame type. This puts higher requirements on the capabilities and functions of the zero-power STA. Require.
  • the first indication information is carried in the physical layer part of the first PPDU frame.
  • the first indication information may be carried in the physical layer part of the first PPDU frame.
  • the zero-power STA detects the physical layer part of the first PPDU frame, it determines whether the first PPDU frame is a target reception frame. If the first PPDU frame is a target reception frame, it is determined that the AP is instructed to receive the first PPDU frame. If the first PPDU frame is not the target received frame, it is determined that the AP has instructed not to receive the first PPDU frame.
  • the first indication information may be carried in the physical layer preamble or physical layer header of the first PPDU frame, or may be carried in other locations of the physical layer part.
  • first indication information is added to the physical layer preamble of the first PPDU frame.
  • the zero-power STA detects the physical layer preamble of the PPDU frame, and then determines whether the first PPDU frame is a target reception frame based on the detection of the first indication information.
  • the first indication information is added to the physical layer header of the first PPDU frame.
  • the zero-power STA detects the physical layer header of the PPDU frame, and then determines whether the first PPDU frame is a target reception frame based on the detection of the first indication information.
  • the location of the first indication information in the physical layer part is as shown in Figure 12, which is located after SIGNAL in the physical part.
  • the position of the first indication information in the physical layer part of the first PPDU frame is not unique.
  • Other fields included in the physical layer part of the first PPDU frame are also not limited.
  • the AP indicates the first time information to the zero-power STA through the second indication information, and the zero-power STA determines the first time information according to the second indication information.
  • the first time information corresponds to the reception time of the first PPDU frame.
  • the second indication information is used to instruct the zero-power STA to receive the data part of the first PPDU frame.
  • the AP sends second indication information to the zero-power STA, and the first time information indicated by the second indication information corresponds to the reception time of the first PPDU frame.
  • the zero-power STA determines based on the second indication information that the AP instructs the zero-power STA to receive the first PPDU frame, and the reception time of the first PPDU frame corresponds to the first time information.
  • the first time information indicated by the second indication information may be the first time, the first duration, or may be an arrival indication indicating arrival reception time.
  • the reception time of the first PPDU frame is the first time or the second time
  • the second time is the time obtained by adding the first time and the second duration.
  • the reception time of the first PPDU frame is the third time
  • the third time is the time after the first time interval from the time interval when the second indication information is received.
  • the reception time of the first PPDU frame is the fourth time or the fifth time
  • the fourth time is the time when the second indication information is received
  • the fifth time is the fourth time plus the third time. The moment after the duration.
  • the first PPDU frame received by the zero-power STA is the first PPDU frame received after the reception time of the first PPDU frame.
  • the zero-power consumption STA determines the reception time of the first PPDU frame based on the second indication information, it enters the sleep state before determining the reception time of the first PPDU frame, and enters the awake state after reaching the reception time of the first PPDU frame, so as to Listen to the first PPDU frame sent by the AP.
  • the first time information corresponds to a first transmission time or a first time interval; the first transmission time is the transmission time when the AP periodically sends the first PPDU frame, and the first The time interval is the duration of the sleep state between two wake-up states of the zero-power STA.
  • the first PPDU frame is a periodically sent PPDU frame, such as a Beacon frame.
  • the first transmission time may be a beacon scheduled transmission time (Target Beacon Transmission Time, TBTT).
  • TBTT is the periodic time for sending/receiving Beacon frames.
  • the periodic time is determined by the Beacon Interval.
  • Beacon Interval indicates the time interval for sending Beacon.
  • the zero-power STA enters the wake-up state after the first time interval, and monitors the first PPDU frame in the wake-up state.
  • the first PPDU frame may be a Beacon frame.
  • the first time interval may be a listening interval, and a listening interval may experience at least one TBTT.
  • the time granularity of the first time information is a second time interval
  • the second time interval is a sending interval for the AP to send the first PPDU frame.
  • the timestamp Timestamp field indicated in the Beacon frame includes 64 bits.
  • the second indication information When used to synchronize STAs in the BSS, the second indication information only needs to occupy part of the bits in the Timestamp field and does not need to occupy all 64 bits of the Timestamp field. bits.
  • the AP sends the first PPDU frame once every second time interval. Therefore, the time granularity of the first time information is the second time interval. To ensure that the zero-power STA correctly receives the first PPDU frame, there is no need to add the first PPDU frame to the first time interval.
  • the time granularity of time information is limited to microseconds, achieving the low complexity of zero-power STA.
  • the relationship between the second indication information and the first PPDU frame includes one of the following:
  • Relationship B1 the second indication information is independent of the first PPDU frame.
  • Relationship B2 the second indication information is carried on the first PPDU frame.
  • the second indication information is independent of the first PPDU frame.
  • the second indication information can be sent from the AP to the zero-power STA at the same time as the first PPDU frame, or can be sent from the AP to the zero-power STA separately.
  • the zero-power STA After the zero-power STA receives the second indication information, it determines the first time information based on the second indication information.
  • the second indication information is used to instruct the zero-power STA to receive the first PPDU frame, and at the reception time of the first PPDU frame Receive the first PPDU frame.
  • the second indication information may be located on any PPDU frame before the first PPDU frame.
  • the second indication information is carried on the first PPDU frame.
  • the zero-power STA receives the first PPDU frame, parses the received first PPDU frame, and obtains the second indication information. The zero-power STA determines that it is instructed by the AP to receive the data part of the first PPDU frame.
  • the second indication information is carried in the MAC header of the first PPDU frame.
  • the zero-power STA receives the MAC header of the data part of the first PPDU frame.
  • the STA needs to receive the data part and perform decoding and verification to Determine the second instruction information. If the first time indicated by the second indication information corresponds to the current reception time of the first PPDU frame, the zero-power STA continues to receive other data in the data part of the first PPDU frame.
  • the second indication information is carried in the physical layer part of the first PPDU frame.
  • the AP may carry the second indication information in the physical layer part of the first PPDU frame.
  • the zero-power STA detects the physical layer part of the first PPDU frame, determines the first time information, and determines whether to receive the first PPDU frame based on the first time information. In the case of reception, determines that the current first PPDU frame is The target receives the frame. If the first PPDU frame is a target reception frame, it is determined that the AP is instructed to receive the data part of the first PPDU frame. If the first PPDU frame is not the target received frame, it is determined that the AP has instructed not to receive the data part of the first PPDU frame.
  • the second indication information may be carried in the physical layer preamble or physical layer header of the first PPDU frame, or may be carried in other locations of the physical layer part.
  • second indication information is added to the physical layer preamble of the first PPDU frame.
  • the zero-power STA detects the physical layer preamble of the PPDU frame, and then determines whether the first PPDU frame is a target reception frame based on the detection of the second indication information.
  • second indication information is added to the physical layer header of the first PPDU frame.
  • the zero-power STA detects the physical layer header of the PPDU frame, and then determines whether the first PPDU frame is a target reception frame based on the detection of the second indication information.
  • the position of the second indication information in the physical layer part is as shown in Figure 13, and is located after SIGNAL in the physical part.
  • the position of the second indication information in the physical layer part of the first PPDU frame is not unique.
  • Other fields included in the physical layer part of the first PPDU frame are also not limited.
  • the corresponding second indication information is different.
  • the second indication information corresponding to different types of first PPDU frames is different.
  • the first PPDU frames of different types carry different information.
  • the first PPDU frame is a Beacon frame
  • the second indication information corresponding to the Beacon frame carrying the Traffic Indication Map (TIM) and the Beacon frame carrying the Delivery Traffic Indication Map (DTIM) is different:
  • the second indication information corresponding to the Beacon frame carrying TIM is information A
  • the second indication information corresponding to the Beacon frame carrying DTIM is information B.
  • the AP is determined Indicates that the zero-power STA does not receive Beacon frames, and the Beacon frames are Beacon frames that carry TIM.
  • the second indication information received by the zero-power STA is information B
  • the Beacon frame is a Beacon frame carrying DTIM.
  • TIM is a traffic indication diagram based on a bitmap structure, which is used to identify the cache information of the AP.
  • the zero-power STA can check whether the cache information of the AP includes the cache of the zero-power STA based on the TIM.
  • DTIM also indicates AP cached multicast information.
  • the period of the Beacon frame carrying DTIM is several times that of TBTT. That is, every time a certain number of Beacon frames are sent, one Beacon frame carries DTIM, and other Beacon frames carry TIM. Therefore, the period of DTIM contains an integer number of Beacon intervals.
  • the zero-power STA For DTIM sent by the AP, the zero-power STA must be awake to receive broadcast and multicast information, as well as unicast information. However, for the Beacon frame carrying TIM sent by the AP, the zero-power STA does not necessarily need to wake up to receive unicast information. Depends on the listening interval.
  • the AP indicates the receiving end of the first PPDU frame to the zero-power STA through the third indication information, and the zero-power STA determines whether the first PPDU frame is what the current zero-power STA needs to receive based on the third indication information.
  • the first PPDU frame when the receiving end of the first PPDU frame is the current zero-power consumption STA, it is determined that the first PPDU frame is a target reception frame that needs to be received by the zero-power consumption STA.
  • the third indication information when the third indication information indicates that the receiving end is the zero-power STA, the third indication information is used to instruct the zero-power STA to receive the first PPDU frame. data part.
  • the third indication information indicates that the receiving end of the first PPDU frame is the zero-power STA, then for the zero-power STA, the first PPDU frame is the target PPDU frame received by the zero-power STA, then The zero-power STA is instructed by the AP to receive the data part of the first PPDU frame. If the third indication information indicates that the receiving end of the first PPDU frame is not the zero-power STA, then for the zero-power STA, the first PPDU frame is not the target PPDU frame received by the zero-power STA, then The zero-power STA is instructed by the AP not to receive the data part of the first PPDU frame.
  • a zero-power consumption STA STA1
  • the AP instructs STA1 not to receive the first PPDU frame.
  • STA2 if STA2 receives the third indication information corresponding to the first PPDU frame and indicates that the receiving end is STA2, the AP instructs STA2 to receive the first PPDU frame.
  • the third indication information is an Association Identifier (AID) or a group AID.
  • AID Association Identifier
  • one AP can be associated with N AIDs
  • one zero-power STA is associated with one AID
  • multiple zero-power STAs are associated with one AID.
  • the AIDs associated with multiple zero-power STAs are called group AIDs.
  • the relationship between the third indication information and the first PPDU frame includes one of the following:
  • Relationship C1 the third indication information is independent of the first PPDU frame.
  • Relationship C2 The third indication information is carried on the first PPDU frame.
  • the third indication information is independent of the first PPDU frame.
  • the third indication information may be sent from the AP to the zero-power STA simultaneously with the first PPDU frame, or may be sent from the AP to the zero-power STA separately.
  • the zero-power consumption STA After the zero-power consumption STA receives the third indication information, it determines based on the third indication information that the frame receiving end of the first PPDU frame is the current zero-power consumption STA, and then the first indication information instructs the zero-power consumption STA to receive the first PPDU frame, that is, Indicates receipt of the physical part and data part of the first PPDU frame.
  • the third indication information may be located on any PPDU frame before the first PPDU frame.
  • the third indication information is carried on the first PPDU frame.
  • the zero-power STA receives the first PPDU frame, parses the received first PPDU frame, and obtains the third indication information. If the third indication information indicates that the current zero-power STA is, the zero-power STA is determined to be instructed by the AP. Receive the data portion of the first PPDU frame.
  • the third indication information is carried in the MAC header of the first PPDU frame.
  • the zero-power STA receives the MAC header of the data part of the first PPDU frame.
  • the zero-power STA needs to receive the data part and perform decoding and correction.
  • the third indication information is carried in the physical layer part of the first PPDU frame.
  • the AP may carry the third indication information in the physical layer part of the first PPDU frame.
  • the zero-power STA detects the physical layer part of the first PPDU frame, it determines whether the first PPDU frame is a target reception frame. If the first PPDU frame is a target reception frame, it is determined that the AP is instructed to receive the data part of the first PPDU frame. If the first PPDU frame is not the target received frame, it is determined that the AP has instructed not to receive the data part of the first PPDU frame.
  • the third indication information may be carried in the physical layer preamble or physical layer header of the first PPDU frame, or may be carried in other locations of the physical layer part.
  • third indication information is added to the physical layer preamble of the first PPDU frame.
  • the zero-power STA detects the physical layer preamble of the PPDU frame, and then determines whether the first PPDU frame is a target reception frame based on the detection of the third indication information.
  • third indication information is added to the physical layer header of the first PPDU frame.
  • the zero-power STA detects the physical layer header of the PPDU frame, and then determines whether the first PPDU frame is a target reception frame based on the detection of the third indication information.
  • the location of the third indication information in the physical layer part is as shown in Figure 14, located between LTF and SIGNAL in the physical part.
  • the position of the third indication information in the physical layer part of the first PPDU frame is not unique.
  • Other fields included in the physical layer part of the first PPDU frame are also not limited.
  • the wireless communication method provided by the embodiment of this application is shown in Figure 15 and is applied to zero-power STA, including:
  • the zero-power STA receives second information sent by the AP, where the second information is used to indicate the arrival of the first window.
  • the AP determines that the first window is reached based on the local clock, and then sends the second information to the zero-power STA.
  • the second information is used to indicate the arrival of the first window.
  • the first window is applied to the zero-power STA. window.
  • the zero-power STA determines the arrival of the first window according to the second information, and triggers the first window according to the instruction of the second information.
  • the zero-power STA performs actions corresponding to the first window.
  • the zero-power STA can exchange data after the first window is reached, and can also access the channel after the first window is reached, thereby determining whether it can intervene in the channel for data transmission.
  • the zero-power STA triggers the first window based on the second information sent by the AP, and thereby receives or sends data based on the triggered first window.
  • the AP indicates the arrival of the first window to the zero-power STA through the second information, and the zero-power STA determines the arrival of the first window through the second information received from the AP. There is no need for the zero-power STA to pass the local The clock is used to determine whether the first window is reached, thereby meeting the scenario where the zero-power STA cannot maintain precise time synchronization with the AP.
  • the zero-power STA can support the wireless communication method shown in Figure 9 and the wireless communication method shown in Figure 15.
  • the wireless communication method shown in Figure 9 and the wireless communication method shown in Figure 15 can be implemented independently. , can also be implemented together.
  • the wireless communication method provided by the embodiment of this application is shown in Figure 16, applied to AP, and includes:
  • the AP sends second information to the zero-power consumption STA, where the second information is used to indicate the arrival of the first window.
  • the AP determines that the first window is reached based on the local clock, and then sends the second information to the zero-power STA.
  • the second information is used to indicate the arrival of the first window.
  • the first window is applied to the zero-power STA. window.
  • the zero-power STA determines the arrival of the first window according to the second information, and triggers the first window according to the instruction of the second information.
  • the AP indicates the arrival of the first window to the zero-power STA through the second information, and the zero-power STA determines the arrival of the first window through the second information received from the AP. There is no need for the zero-power STA to pass the local The clock is used to determine whether the first window is reached, thereby meeting the scenario where the zero-power STA cannot maintain precise time synchronization with the AP.
  • the AP can support the wireless communication method shown in Figure 10 and the wireless communication method shown in Figure 16.
  • the wireless communication method shown in Figure 10 and the wireless communication method shown in Figure 16 can be implemented separately, or they can be implemented separately. Implement together.
  • the wireless communication method provided by the embodiment of this application is shown in Figure 17 and is applied to a communication system including AP and zero-power STA, including:
  • the AP sends the second information to the zero-power STA.
  • the zero-power STA triggers the first window according to the received second information.
  • the second information is used to indicate second time information, and the second time information corresponds to the first window.
  • the second time information may be the sixth moment or the fourth duration.
  • the arrival time of the first window is the sixth time or the seventh time
  • the seventh time is the time obtained by adding the sixth time to the fifth time.
  • the arrival time of the first window is the eighth time
  • the eighth time is the time after the fourth time interval from the time when the second information is received.
  • the second information is used to indicate trigger information
  • the trigger information is used to trigger the first window.
  • the zero-power STA can trigger the first window at the moment when the trigger information is received, or trigger the first window after the sixth duration.
  • the second information is carried on a second PPDU frame.
  • the AP carries the second information on the second PPDU frame and sends it to the zero-power STA.
  • the zero-power STA determines the second information based on the received second PPDU frame and triggers the first window based on the second information.
  • the second PPDU frame is a Beacon frame.
  • the zero-power STA enters the wake-up state when it needs to receive the Beacon frame, receives the Beacon frame in the wake-up state, and when the received Beacon frame carries the second information, the arrival time of the first window is determined based on the second information.
  • the zero-power STA can enter the sleep state after receiving the Beacon frame, enter the wake-up state at the arrival time of the first window, and trigger the first window in the wake-up state; it can also remain in the wake-up state after receiving the Beacon frame. And trigger the first window at the arrival time of the first window.
  • the second PPDU frame is a Null Data Packet (NDP) PPDU frame.
  • NDP Null Data Packet
  • NDP PPDU frames do not carry data and are used for measurement or carrying control information.
  • the frame structure of the NDP PPDU frame includes the physical layer preamble and the physical layer header. There is no MAC frame header and MAC layer service data unit (MAC Server Data Unit, MSDU).
  • the non-data (Null Data Packet Carrying Medium Access Control information, NDP CMAC) PPDU frame carrying MAC control information only includes the physical layer preamble and the physical layer header.
  • the NDP CMAC PPDU frame includes the following fields :STF, LTF1 and SIGNAL.
  • the second information may be carried in SIGNAL included in the NDP.
  • the structure of the SIGNAL field is shown in Figure 19, including: NDP CMAC PPDU frame body, NDP indication, CRC and tail bit (Tail).
  • the NDP CMAC PPDU frame body includes NDP CMAC PPDU frame Type information and related control information. For example, if the NDP CMAC PPDU frame Type indicates that the high NDP is CTS, then the control information carried by this NDP is CTS information.
  • the second information may be carried in the NDP CMAC PPDU frame Type of the NDP CMAC PPDU frame body.
  • the first window is a target wake-up time TWT period.
  • the TWT period is the interval between two TWT times
  • the TWT time is reached, and the zero-power consumption STA enters the wake-up state after the TWT time arrives, and exchanges data. After completing the exchange of data, it enters the sleep state until the current TWT cycle ends and the next TWT cycle is reached.
  • the TWT period arrives at time 2001, then the TWT time arrives at time 2001, the zero-power STA enters the wake-up state at time 2001, and exchanges data, and completes the exchange of data at time 2002 After that, it goes to sleep until the next TWT time period is reached at time 2003.
  • the zero-power STA enters the wake-up state again at time 2003 and exchanges data until time 2004.
  • the second information may indicate at least one of the following information of the TWT period: the start time of the TWT period, the end time of the TWT time, and the duration of the TWT period.
  • the first window is a first restricted access window (RAW) corresponding to the zero-power STA.
  • RAW restricted access window
  • the channel is divided into different time intervals. Each time interval corresponds to a RAW and is assigned to a RAW group. Each RAW group includes a certain number of STAs. For a zero-power STA, when the first RAW corresponding to the zero-power STA reaches, the zero-power STA starts to access the channel. It can be understood that the RAW group corresponding to the first RAW includes the zero-power STA.
  • the second information may indicate at least one of the following information of the first RAW: the start time of the first RAW, the end time of the first RAW, and the duration of the first RAW.
  • the second PPDU frame is located within the first RAW or outside the first RAW, and the second PPDU frame is a PPDU frame carrying the second information.
  • the second information is for a first time slot included in the first RAW, the first time slot corresponds to the first RAW group, and the first RAW group includes the zero power Consume STA.
  • the first RAW may be divided into a plurality of time slots, and each time slot corresponds to a different RAW grouping.
  • the plurality of time slots divided by the first RAW include a first time slot, and the RAW grouping corresponding to the first time slot includes zeros. Power consumption STA.
  • the second information may be for the first time slot included in the first RAW, that is, the second information indicates the arrival of the first time slot. It can be understood that the second information may be directed to one or more time slots in the first RAW, and the one or more time slots include the first time slot.
  • the timing of signal transmission and reception is determined based on the local clock.
  • the STA's local clock will also be regularly aligned with the AP to ensure that the timing between devices is consistent, so that data can be sent and received at the corresponding time.
  • a beacon frame is a broadcast management frame used to broadcast basic information of the AP.
  • the Beacon Interval field indicated in the Beacon frame indicates the time interval for sending Beacon.
  • the beacon scheduled transmission time (Target Beacon Transmission Time, TBTT) is a timed cycle of sending/receiving Beacon actions, and the cycle time is determined by the Beacon Interval.
  • TBTT Target Beacon Transmission Time
  • the AP will actively send Beacon frames, and the nodes will also actively receive the Beacon frames (including nodes in sleep mode, which will also wake up to receive the Beacon, and then use the Beacon frames to perform time synchronization and view service indication messages.
  • each Beacon frame has a TIM information, which is mainly used to be announced by the AP. Which STAs under its jurisdiction have information now cached in the AP.
  • Listening interval refers to the number of TBTTs that the STA has experienced between two wake-ups, that is, how many Beacon frames have been skipped. The longer the listening interval, the longer the STA sleeps, thus saving more energy, but it will consume the AP's buffer space and increase the access delay.
  • the Timestamp field included in the Beacon frame includes 64 bits and is used to synchronize STAs in the BSS.
  • the AP in the BSS will periodically send the AP's clock information through Beacon frames.
  • the STA receives the Timestamp and synchronizes its local clock to be consistent with the AP.
  • the AP sends its own timing synchronization function (TSF) timer to the STA in the BSS through the Timestamp field.
  • TSF timing synchronization function
  • STA locally maintains a 264-length TSF timer, and the time length unit is microseconds.
  • the above is the method to maintain time synchronization between AP and STA in the current wifi system.
  • STA can maintain the local TSF timer with a certain accuracy, and can periodically align with the AP through Beacon frames.
  • the STA can determine the reception and transmission time of PPDU frames based on the local TSF timer. For zero-power STA, its local timing accuracy is poor. Even if the timing is periodically provided for the zero-power STA through Beacon frames, the zero-power STA cannot maintain an accurate TSF timer within the transmission interval of the Beacon frame. To send and receive information.
  • the wireless communication method provided by the embodiments of this application can include but is not limited to the following embodiments.
  • Embodiment 1 Indicate whether the PPDU frame is a target reception frame in the physical layer part of the PPDU frame
  • the zero-power STA For the reception of some management frames, such as Beacon frames, the zero-power STA needs to wake up during the TBTT or listening interval to receive the information broadcast by the AP. The arrival time of TBTT and listening interval needs to be measured by the STA's local timer. Zero-power STA cannot maintain accurate timing information.
  • the frame type carried by the PPDU frame is carried in the data part of the PPDU frame, which is also carried in the MAC layer information part. STA needs to receive the data part and decode and verify it to determine the frame type.
  • Type Type description Subtype SubtypeDescription 01 Control 1100 CTS 01 Control 1101 ACK 00 Management 1000 Beacon 10 Data 0000 Data
  • the zero-power STA receives all PPDU frames and determines whether the currently received frame is the target PPDU frame that needs to be received based on the address information and frame type information carried by the MAC part of the PPDU frame. This places higher requirements on the capabilities and energy supply of zero-power STA.
  • the zero-power STA can determine whether it is the target receiving frame in the physical layer part of the PPDU frame, it can reduce the zero-power STA's decoding of the MAC layer information part and reduce the requirements for the zero-power STA's capabilities and energy supply.
  • the AP when it sends a PPDU frame, it can carry frame type and frame subtype information in the physical layer part of the PPDU frame. For example, add frame type/frame subtype information to the physical layer header of the PPDU frame.
  • the zero-power STA detects the physical layer preamble of the PPDU frame, and then detects the frame type/frame subtype information to determine whether it is the target received frame.
  • a zero-power STA when a zero-power STA monitors Beacon frames, it can determine whether it is a Beacon frame sent by the AP by detecting the frame type/frame subtype field in the physical layer part of the PPDU frame, thereby determining whether to receive the data part of the PPDU frame.
  • the frame type/frame subtype information may be a characteristic sequence that identifies the Beacon frame, which is used by the zero-power STA to perform relevant reception and determine that the PPDU frame is a Beacon frame.
  • the frame format in which the frame type/frame subtype information field is added to the physical layer header part of the PPDU frame is shown in Figure 21, located before the data part.
  • the position of the frame type/frame subtype information field in the physical layer part of the PPDU frame is not unique.
  • Other fields included in the physical layer part of the PPDU frame are not limited.
  • Different physical layer preambles can also be defined to identify target received frames. For example, different from the fixed preamble sequence of the existing technology, in this method, multiple preamble sequences can be defined, and the zero-power consumption STA performs relevant reception of the preamble sequence to determine the preamble sequence, thereby determining whether the PPDU frame is a target reception frame.
  • the physical layer preamble of a PPDU frame carrying Beacon frames uses preamble1, which is different from PPDU frames carrying other types of frames.
  • Embodiment 2 Indicate timing information in the physical layer part of the PPDU frame
  • the time to receive a PPDU frame of a certain frame type cannot be determined by an accurate timer.
  • the timing information is indicated in the physical layer part of the PPDU frame.
  • the timing information may be coarser-grained timing information than the information indicated by the Timestamp in the related art.
  • the timing information may indicate the arrival time of the TBTT or listening interval. Therefore, the time granularity indicated by this timing information is Beacon Interval, and does not need to be subtle.
  • the timing information may indicate part of the bits in the Timestamp field in the Beacon frame, but does not need to be all 64 bits.
  • the frame format of the timing information field added to the physical layer header part of the PPDU frame is shown in Figure 22, located before the data part.
  • the position of the timing information field in the physical layer part of the PPDU frame is not unique.
  • Other fields included in the physical layer part of the PPDU frame are not limited.
  • Timing information can indicate Beacon frames carrying specific content.
  • PSM PowerSaving Mode
  • the AP will cache downlink data. Only when the STA actively requests the AP after sleeping, will the AP send downlink data.
  • the AP periodically broadcasts its cache status to the corresponding node through Beacon frames, so that the node can know whether its own data is cached by the AP. After the sleep is completed, the node with cached data will make a data request, otherwise it will continue to sleep.
  • the AP carries the traffic indication map TIM through the Beacon frame.
  • the TIM is a traffic indication map based on a bitmap structure and is used to identify the cache information of the AP. Each bit in the bitmap corresponds to the AID of an STA.
  • DTIM In addition to indicating cached unicast information, DTIM also indicates AP cached multicast information.
  • the period of the Beacon frame carrying DTIM is several times that of TBTT. That is, every time a certain number of Beacon frames are sent, one Beacon frame carries DTIM, and other Beacon frames carry TIM. Therefore, the period of DTIM contains an integer number of Beacon intervals.
  • the STA For DTIM sent by the AP, the STA must be awake to receive broadcast and multicast information, as well as unicast information. For TIM sent by the AP, the STA does not necessarily need to wake up to receive unicast information, depending on the listening interval.
  • a DTIM interval includes 3 Beacon intervals.
  • the zero-power STA needs to wake up for a period of time during the TBTT carrying the DTIM Beacon frame to receive broadcast and multicast frames, including unicast frames.
  • TBTT that carries TIM's Beacon frame it does not need to wake up to save power.
  • the physical layer part of the PPDU frame corresponding to the Beacon frame carrying DTIM and TIM carries different timing information respectively.
  • timing information 2 and timing information 1 are used to indicate whether the current Beacon frame carries DTIM or TIM.
  • the zero-power STA determines whether to receive the data part of the Beacon frame based on this timing information to obtain the corresponding information. As shown in Figure 23, the zero-power STA detects timing information 1 and does not continue to receive the data part of the Beacon frame. After receiving the Beacon frame, it enters the sleep state; the zero-power STA detects timing information 2 and determines that it is a bearer. DTIM's Beacon frame remains awake to receive the data part of the Beacon frame and the cached data of subsequent broadcast and multicast frames.
  • Embodiment 3 The physical layer information part of the PPDU frame indicates the identification information of the zero-power STA
  • the MAC header in the PPDU frame contains an address field, which is used to indicate the intended receiving user of the frame.
  • each bit in the TIM in the Beacon frame corresponds to the Association ID (Association Identifier, AID) of an STA.
  • the range of AID is from 0 to 2007, and an AP can be associated with up to 2007 STAs.
  • AID is also assigned during this process and notified to STA.
  • a group AID can be assigned to a group of S1G STAs.
  • the identification information of the zero-power STA may be indicated in the physical layer information part of the target PPDU frame.
  • the identification information can be AID or group AID.
  • the frame format in which the AID field is added to the physical layer header part of the PPDU frame is shown in Figure 24, which is located in the physical part and adjacent to the data part.
  • the position of the AID field in the physical layer part of the PPDU frame is not unique.
  • Other fields included in the physical layer part of the PPDU frame are not limited.
  • the above-mentioned embodiments 1 to 3 solve how to instruct the zero-power STA to receive the PPDU frame sent at the target time.
  • the trigger frame corresponds to the time window corresponding to the zero-power STA
  • the STA's wake-up and data reception and transmission are optimized accordingly.
  • the TWT scheduled wake-up mechanism is used to support energy saving work in large-scale IoT environments.
  • TWT a schedule is established between the terminal and the AP (the schedule is agreed between the STA and the AP), and the schedule is composed of the TWT time period.
  • the TWT time period negotiated by the STA and the AP includes one or more Beacon periods.
  • the STA will wake up, wait for the trigger frame sent by the AP, and perform a data exchange. When this transfer is completed, it returns to sleep state.
  • Each STA and AP will conduct independent negotiations, and each STA has an independent TWT time period.
  • the AP can also group STAs according to the set TWT time period and connect to multiple STAs at one time, thereby improving energy saving efficiency.
  • TWT has three working modes, namely: 1) Individual TWT, 2) Broadcast TWT, and 3) Opportunistic PS.
  • TWT Individual TWT is the TWT negotiated by the AP and STA. There are two modes for determining the TWT: explicit and implicit:
  • the AP will explicitly tell the STA about the next TWT cycle; the STA will wake up at the new specified TWT cycle and exchange data frames with the AP again.
  • the AP will not tell the STA the next TWT cycle; the STA will calculate the next TWT cycle by itself (by adding a specific time to the current TWT cycle). The STA will wake up during the TWT period calculated by itself and exchange data frames with the AP again.
  • the broadcast TWT mechanism is a working mechanism managed by the AP. Under this mechanism, the TWT time period is announced by the AP. Usually the AP will announce the TWT time period of this round in each Beacon frame. The STA wakes up after the TWT time period arrives, and the AP sends a broadcast trigger frame. When the AP completes the transmission, the STA returns to the sleep state until the next broadcast TWT time arrives.
  • Opportunistic PS The opportunistic PS mode is similar to the previous two working modes, but there is no negotiation process between the AP and the node.
  • the AP will publicly announce a TWT time in each Beacon. Any STA can choose to wake up within this public TWT time and perform data frame exchange with the AP.
  • the STA needs a local timer to calculate the arrival of the TWT time.
  • AP triggering is required to determine the arrival of TWT.
  • the trigger information sent by the AP indicates the TWT time.
  • a trigger frame can be defined to carry trigger information and indicate the target TWT time.
  • the AP sends a trigger frame (trigger) to indicate the arrival of the TWT time to the zero-power STA.
  • the zero-power STA can wake up to exchange data frames.
  • the trigger information in the embodiment of this application is used to indicate the arrival of the TWT time.
  • an NDP frame may be used as a trigger frame.
  • the main purpose of NDP frames is to measure or carry control information, not data.
  • the frame structure of the NDP frame mainly includes the physical layer preamble and the physical layer header, without the header and MSDU of the MAC frame.
  • the structure of the NDP frame is shown in Figure 18.
  • the structure of the Signal field of the NDP frame is shown in Figure 19.
  • the NDP CMAC PPDU frame body part includes the NDP CMAC PPDU frame Type information and related control information. For example, if the NDP CMAC PPDU frame Type indicates that the high NDP is CTS, then the control information carried by this NDP is CTS information.
  • a new NDP CMAC PPDU frame Type in order to carry the trigger information indicating the TWT time through NDP, a new NDP CMAC PPDU frame Type can be defined.
  • the control information carried by the NDP is the trigger information indicating the TWT time.
  • WiFi supports a large number of node scenarios.
  • RAW is introduced. STAs are grouped through RAW to reduce channel contention by allowing only specific nodes to access the channel within a specific time.
  • the RAW working mechanism description is shown in Figure 26.
  • the channel time is divided into different time intervals, each interval is assigned to a RAW group, and each RAW group contains a certain number of nodes.
  • the beacon RPS with RAW parameter information specifies the number of nodes, starting time and duration contained in each group.
  • RAWA, RAWB, and RAWC are different RAWs and correspond to different RAW groups. Each RAW can be further evenly divided into multiple time slots (slots).
  • RPS also includes the number of time slots, time slot format, time slot duration counter, etc.
  • the STA is divided into multiple RAW groups and each RAW group is assigned a time slot. Nodes belonging to the same time slot compete for access channels, which reduces collisions between nodes to a certain extent.
  • RAWB is evenly divided into N time slots from time slot 1 to time slot N.
  • the trigger information is used to indicate the arrival of the RAW time.
  • the trigger frame carrying the trigger information can be inside RAW or outside RAW.
  • the trigger frame may also be for a RAW time slot, that is, a RAW time slot.
  • each trigger frame is for one or more RAW time slots. As shown in Figure 29, for time slots 1 to time slot N , each trigger frame corresponds to a RAW time slot.
  • the trigger information is directed to the sending position of the RAW trigger frame.
  • it can also correspond to the end time of RAW, which is used to indicate the end time of RAW to the zero-power STA.
  • Embodiments 1 to 3 in order to illustrate the reception time of the zero-power STA to obtain the target PPDU frame, Beacon reception is taken as an example.
  • Embodiment 4 To illustrate how a zero-power STA obtains a target time interval, TWT and RAW are taken as examples.
  • TWT and RAW are taken as examples.
  • other types of PPDU frames and windows (time intervals) that require the STA to determine the time based on timing information can use the wireless communication method provided by the embodiments of the present application.
  • Zero-power STA cannot obtain an accurate clock, which affects the sending and receiving of data.
  • the wireless communication method provided by the embodiment of this application can assist the zero-power STA to obtain the target reception PPDU frame or the target time interval through the information sent by the AP for correct reception and transmission of data, while achieving low complexity of the zero-power STA. degree and low power consumption.
  • the size of the sequence numbers of the above-mentioned processes does not mean the order of execution.
  • the execution order of each process should be determined by its functions and internal logic, and should not be used in this application.
  • the implementation of the examples does not constitute any limitations.
  • the terms “downlink”, “uplink” and “sidelink” are used to indicate the transmission direction of signals or data, where “downlink” is used to indicate that the transmission direction of signals or data is from the station.
  • uplink is used to indicate that the transmission direction of the signal or data is the second direction from the user equipment of the cell to the site
  • sidelink is used to indicate that the transmission direction of the signal or data is A third direction sent from User Device 1 to User Device 2.
  • downlink signal means that the transmission direction of the signal is the first direction.
  • the term “and/or” is only an association relationship describing associated objects, indicating that three relationships can exist. Specifically, A and/or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship.
  • FIG 30 is a schematic structural diagram of a wireless communication device provided by an embodiment of the present application, which is applied to a zero-power STA.
  • the wireless communication device 3000 includes:
  • the first communication unit 3001 is configured to be instructed by the access point AP whether to receive the data part of the first physical layer data protocol unit PPDU frame.
  • the first communication unit 3001 is further configured to receive the first information sent by the AP, the first information being used to indicate whether the zero-power STA receives the first PPDU frame; or, The first information is used to indicate whether the zero-power consumption STA receives the data part of the first PPDU frame.
  • the first information includes at least one of the following, including:
  • the first indication information is used to indicate the frame type of the first PPDU frame
  • the second indication information is used to indicate first time information, and the first time information corresponds to the time of receiving the first PPDU frame;
  • the third indication information is used to indicate the receiving end of the first PPDU frame.
  • the first indication information when the first indication information indicates that the frame type of the first PPDU frame is a target frame type, the first indication information is used to instruct the zero-power STA to receive the first The data part of the PPDU frame.
  • the first indication information includes one of the following: type information or subtype information.
  • the first indication information is a first feature sequence
  • the first feature sequence is a feature sequence that identifies the frame type of the first PPDU frame.
  • the first indication information is a first physical preamble
  • the first physical preamble is a physical layer preamble that identifies the frame type of the first PPDU frame.
  • the first indication information is independent of the first PPDU frame.
  • the first indication information is carried on the first PPDU frame.
  • the first indication information is carried in the physical layer part of the first PPDU frame.
  • the second indication information is used to instruct the zero-power STA to receive the data part of the first PPDU frame.
  • the first time information corresponds to a first transmission time or a first time interval; the first transmission time is the transmission time when the AP periodically sends the first PPDU frame, and the first transmission time A time interval is the duration of the sleep state between two wake-up states of the zero-power STA.
  • the time granularity of the first time information is a second time interval
  • the second time interval is a sending interval for the AP to send the first PPDU frame.
  • the second indication information is independent of the first PPDU frame.
  • the second indication information is carried on the first PPDU frame.
  • the second indication information is carried in the physical layer part of the first PPDU frame.
  • the corresponding second indication information is different.
  • the third indication information when the third indication information indicates that the receiving end is the zero-power STA, the third indication information is used to instruct the zero-power STA to receive the first PPDU frame. data part.
  • the third indication information is an association identification AID or a group AID.
  • the third indication information is independent of the first PPDU frame.
  • the third indication information is carried on the first PPDU frame.
  • the third indication information is carried in the physical layer part of the first PPDU frame.
  • device 3000 further includes:
  • the third communication unit is configured to receive second information sent by the AP, where the second information is used to indicate arrival of the first window.
  • the second information is used to indicate second time information, and the second time information corresponds to the first window.
  • the second information is used to indicate trigger information
  • the trigger information is used to trigger the first window.
  • the second information is carried on a second PPDU frame.
  • the second PPDU frame is an empty data PPDU frame.
  • the first window is a target wake-up time TWT period.
  • the first window is a first restricted access window RAW corresponding to the zero-power STA.
  • the second PPDU frame is located within the first RAW or outside the first RAW, and the second PPDU frame is a PPDU frame carrying the second information.
  • the second information is for a first time slot included in the first RAW, the first time slot corresponds to the first RAW group, and the first RAW group includes the zero power consumption STA.
  • FIG 31 is a schematic structural diagram of a wireless communication device provided by an embodiment of the present application. It is applied to an AP. As shown in Figure 31, the wireless communication device 3100 includes:
  • the second communication unit 3101 is configured to indicate whether the zero-power consumption STA receives the data part of the first physical layer data protocol unit PPDU frame.
  • the second communication unit 3101 is further configured to send first information to the zero-power STAAP, where the first information is used to indicate whether the zero-power STA receives the first PPDU frame; Alternatively, the first information is used to indicate whether the zero-power consumption STA receives the data part of the first PPDU frame.
  • the first information includes at least one of the following, including:
  • the first indication information is used to indicate the frame type of the first PPDU frame
  • the second indication information is used to indicate first time information, and the first time information corresponds to the time of receiving the first PPDU frame;
  • the third indication information is used to indicate the receiving end of the first PPDU frame.
  • the first indication information when the first indication information indicates that the frame type of the first PPDU frame is a target frame type, the first indication information is used to instruct the zero-power STA to receive the first The data part of the PPDU frame.
  • the first indication information includes one of the following: type information or subtype information.
  • the first indication information is a first feature sequence
  • the first feature sequence is a feature sequence that identifies the frame type of the first PPDU frame.
  • the first indication information is a first physical preamble
  • the first physical preamble is a physical layer preamble that identifies the frame type of the first PPDU frame.
  • the first indication information is independent of the first PPDU frame.
  • the first indication information is carried on the first PPDU frame.
  • the first indication information is carried in the physical layer part of the first PPDU frame.
  • the second indication information is used to instruct the zero-power STA to receive the data part of the first PPDU frame.
  • the first time information corresponds to a first transmission time or a first time interval; the first transmission time is the transmission time when the AP periodically sends the first PPDU frame, and the first transmission time A time interval is the duration of the sleep state between two wake-up states of the zero-power STA.
  • the time granularity of the first time information is a second time interval
  • the second time interval is a sending interval for the AP to send the first PPDU frame.
  • the second indication information is independent of the first PPDU frame.
  • the second indication information is carried on the first PPDU frame.
  • the second indication information is carried in the physical layer part of the first PPDU frame.
  • the corresponding second indication information is different.
  • the third indication information when the third indication information indicates that the receiving end is the zero-power STA, the third indication information is used to instruct the zero-power STA to receive the first PPDU frame. data part.
  • the third indication information is an association identification AID or a group AID.
  • the third indication information is independent of the first PPDU frame.
  • the third indication information is carried on the first PPDU frame.
  • the third indication information is carried in the physical layer part of the first PPDU frame.
  • device 3100 further includes:
  • the fourth communication unit is configured to send second information to the AP, where the second information is used to indicate arrival of the first window.
  • the second information is used to indicate second time information, and the second time information corresponds to the first window.
  • the second information is used to indicate trigger information
  • the trigger information is used to trigger the first window.
  • the second information is carried on a second PPDU frame.
  • the second PPDU frame is an empty data PPDU frame.
  • the first window is a target wake-up time TWT period.
  • the first window is a first restricted access window RAW corresponding to the zero-power STA.
  • the second PPDU frame is located within the first RAW or outside the first RAW, and the second PPDU frame is a PPDU frame carrying the second information.
  • the second information is for a first time slot included in the first RAW, the first time slot corresponds to the first RAW group, and the first RAW group includes the zero power consumption STA.
  • Figure 32 is a schematic structural diagram of a wireless communication device provided by an embodiment of the present application, which is applied to a zero-power STA. As shown in Figure 32, the wireless communication device 3200 includes:
  • the third communication unit 3201 is configured to receive second information sent by the access point AP, where the second information is used to indicate the arrival of the first window.
  • the second information is used to indicate second time information, and the second time information corresponds to the first window.
  • the second information is used to indicate trigger information
  • the trigger information is used to trigger the first window.
  • the second information is carried on a second PPDU frame.
  • the second PPDU frame is an empty data PPDU frame.
  • the first window is a target wake-up time TWT period.
  • the first window is a first restricted access window RAW corresponding to the zero-power STA.
  • the second PPDU frame is located within the first RAW or outside the first RAW, and the second PPDU frame is a PPDU frame carrying the second information.
  • the second information is for a first time slot included in the first RAW, the first time slot corresponds to the first RAW group, and the first RAW group includes the zero power consumption STA.
  • apparatus 3200 further includes:
  • the first communication unit is configured to be instructed by the AP whether to receive the data part of the first physical layer data protocol unit PPDU frame.
  • the first communication unit is further configured to receive first information sent by the AP, where the first information is used to indicate whether the zero-power STA receives the first PPDU frame; or , the first information is used to indicate whether the zero-power consumption STA receives the data part of the first PPDU frame.
  • the first information includes at least one of the following, including:
  • the first indication information is used to indicate the frame type of the first PPDU frame
  • the second indication information is used to indicate first time information, and the first time information corresponds to the time of receiving the first PPDU frame;
  • the third indication information is used to indicate the receiving end of the first PPDU frame.
  • the first indication information when the first indication information indicates that the frame type of the first PPDU frame is a target frame type, the first indication information is used to instruct the zero-power STA to receive the first The data part of the PPDU frame.
  • the first indication information includes one of the following: type information or subtype information.
  • the first indication information is a first feature sequence
  • the first feature sequence is a feature sequence that identifies the frame type of the first PPDU frame.
  • the first indication information is a first physical preamble
  • the first physical preamble is a physical layer preamble that identifies the frame type of the first PPDU frame.
  • the first indication information is independent of the first PPDU frame.
  • the first indication information is carried on the first PPDU frame.
  • the first indication information is carried in the physical layer part of the first PPDU frame.
  • the second indication information is used to instruct the zero-power STA to receive the data part of the first PPDU frame.
  • the first time information corresponds to a first transmission time or a first time interval; the first transmission time is the transmission time when the AP periodically sends the first PPDU frame, and the first transmission time A time interval is the duration of the sleep state between two wake-up states of the zero-power STA.
  • the time granularity of the first time information is a second time interval
  • the second time interval is a sending interval for the AP to send the first PPDU frame.
  • the second indication information is independent of the first PPDU frame.
  • the second indication information is carried on the first PPDU frame.
  • the second indication information is carried in the physical layer part of the first PPDU frame.
  • the corresponding second indication information is different.
  • the third indication information when the third indication information indicates that the receiving end is the zero-power STA, the third indication information is used to instruct the zero-power STA to receive the first PPDU frame. data part.
  • the third indication information is an association identification AID or a group AID.
  • the third indication information is independent of the first PPDU frame.
  • the third indication information is carried on the first PPDU frame.
  • the third indication information is carried in the physical layer part of the first PPDU frame.
  • Figure 33 is a schematic structural diagram of a wireless communication device provided by an embodiment of the present application. It is applied to an AP. As shown in Figure 33, the wireless communication device 3300 includes:
  • the fourth communication unit 3301 is configured to send second information to the access point AP, where the second information is used to indicate arrival of the first window.
  • the second information is used to indicate second time information, and the second time information corresponds to the first window.
  • the second information is used to indicate trigger information
  • the trigger information is used to trigger the first window.
  • the second information is carried on a second PPDU frame.
  • the second PPDU frame is an empty data PPDU frame.
  • the first window is a target wake-up time TWT period.
  • the first window is a first restricted access window RAW corresponding to the zero-power STA.
  • the second PPDU frame is located within the first RAW or outside the first RAW, and the second PPDU frame is a PPDU frame carrying the second information.
  • the second information is for a first time slot included in the first RAW, the first time slot corresponds to the first RAW group, and the first RAW group includes the zero power consumption STA.
  • apparatus 3300 further includes:
  • the second communication unit is configured to indicate whether the zero-power consumption STA receives the data part of the first physical layer data protocol unit PPDU frame.
  • the second communication unit is further configured to send first information to the zero-power STAAP, where the first information is used to indicate whether the zero-power STA receives the first PPDU frame. ; Or, the first information is used to indicate whether the zero-power STA receives the data part of the first PPDU frame.
  • the first information includes at least one of the following, including:
  • the first indication information is used to indicate the frame type of the first PPDU frame
  • the second indication information is used to indicate first time information, and the first time information corresponds to the time of receiving the first PPDU frame;
  • the third indication information is used to indicate the receiving end of the first PPDU frame.
  • the first indication information when the first indication information indicates that the frame type of the first PPDU frame is a target frame type, the first indication information is used to instruct the zero-power STA to receive the first The data part of the PPDU frame.
  • the first indication information includes one of the following: type information or subtype information.
  • the first indication information is a first feature sequence
  • the first feature sequence is a feature sequence that identifies the frame type of the first PPDU frame.
  • the first indication information is a first physical preamble
  • the first physical preamble is a physical layer preamble that identifies the frame type of the first PPDU frame.
  • the first indication information is independent of the first PPDU frame.
  • the first indication information is carried on the first PPDU frame.
  • the first indication information is carried in the physical layer part of the first PPDU frame.
  • the second indication information is used to instruct the zero-power STA to receive the data part of the first PPDU frame.
  • the first time information corresponds to a first transmission time or a first time interval; the first transmission time is the transmission time when the AP periodically sends the first PPDU frame, and the first transmission time A time interval is the duration of the sleep state between two wake-up states of the zero-power STA.
  • the time granularity of the first time information is a second time interval
  • the second time interval is a sending interval for the AP to send the first PPDU frame.
  • the second indication information is independent of the first PPDU frame.
  • the second indication information is carried on the first PPDU frame.
  • the second indication information is carried in the physical layer part of the first PPDU frame.
  • the corresponding second indication information is different.
  • the third indication information when the third indication information indicates that the receiving end is the zero-power STA, the third indication information is used to instruct the zero-power STA to receive the first PPDU frame. data part.
  • the third indication information is an association identification AID or a group AID.
  • the third indication information is independent of the first PPDU frame.
  • the third indication information is carried on the first PPDU frame.
  • the third indication information is carried in the physical layer part of the first PPDU frame.
  • Figure 34 is a schematic structural diagram of a communication device 3400 provided by an embodiment of the present application.
  • the communication device can be a zero-power STA or AP.
  • the communication device 3400 shown in Figure 34 includes a processor 3410.
  • the processor 3410 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the communication device 3400 may also include a memory 3420.
  • the processor 3410 can call and run the computer program from the memory 3420 to implement the method in the embodiment of the present application.
  • the memory 3420 may be a separate device independent of the processor 3410, or may be integrated into the processor 3410.
  • the communication device 3400 can also include a transceiver 3430.
  • the processor 3410 can control the transceiver 3430 to communicate with other devices. Specifically, it can send information or data to other devices, or receive other devices. Information or data sent by the device.
  • the transceiver 3430 may include a transmitter and a receiver.
  • the transceiver 3430 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 3400 may specifically be an AP in the embodiment of the present application, and the communication device 3400 may implement the corresponding processes implemented by the AP in the various methods of the embodiment of the present application. For the sake of brevity, details will not be described here.
  • the communication device 3400 can be a zero-power STA in the embodiment of the present application, and the communication device 3400 can implement the corresponding processes implemented by the zero-power STA in the various methods of the embodiment of the present application. For simplicity, in This will not be described again.
  • Figure 35 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • the chip 3500 shown in Figure 35 includes a processor 3510.
  • the processor 3510 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the chip 3500 may also include a memory 3520.
  • the processor 3510 can call and run the computer program from the memory 3520 to implement the method in the embodiment of the present application.
  • the memory 3520 may be a separate device independent of the processor 3510, or may be integrated into the processor 3510.
  • the chip 3500 may also include an input interface 3530.
  • the processor 3510 can control the input interface 3530 to communicate with other devices or chips. Specifically, it can obtain information or data sent by other devices or chips.
  • the chip 3500 may also include an output interface 3540.
  • the processor 3510 can control the output interface 3540 to communicate with other devices or chips. Specifically, it can output information or data to other devices or chips.
  • the chip can be applied to the AP in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the AP in the various methods of the embodiment of the present application.
  • the details will not be described again.
  • the chip can be applied to the zero-power STA in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the zero-power STA in the various methods of the embodiment of the present application. For the sake of brevity, they will not be discussed here. Repeat.
  • chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.
  • Figure 36 is a schematic block diagram of a communication system 3600 provided by an embodiment of the present application. As shown in Figure 36, the communication system 3600 includes a zero-power STA3610 and an AP 3620.
  • the zero-power STA 3610 can be used to implement the corresponding functions implemented by the zero-power STA in the above method
  • the AP 3620 can be used to implement the corresponding functions implemented by the AP in the above method.
  • this is not mentioned here. Again.
  • the processor in the embodiment of the present application may be an integrated circuit chip and has signal processing capabilities.
  • each step of the above method embodiment can be completed through an integrated logic circuit of hardware in the processor or instructions in the form of software.
  • the above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available processors.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.
  • the steps of the method disclosed in conjunction with the embodiments of the present application can be directly implemented by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other mature storage media in this field.
  • 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.
  • non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically removable memory. Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory may be Random Access Memory (RAM), which is used as an external cache.
  • RAM Random Access Memory
  • RAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM DDR SDRAM
  • enhanced SDRAM ESDRAM
  • Synchlink DRAM SLDRAM
  • Direct Rambus RAM Direct Rambus RAM
  • the memory in the embodiment of the present application can also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is, memories in embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.
  • Embodiments of the present application also provide a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium can be applied to the AP in the embodiment of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the AP in the various methods of the embodiment of the present application. For the sake of brevity, they will not be repeated here. Repeat.
  • the computer-readable storage medium can be applied to the zero-power STA in the embodiment of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the zero-power STA in the various methods of the embodiment of the present application, in order to It’s concise and I won’t go into details here.
  • An embodiment of the present application also provides a computer program product, including computer program instructions.
  • the computer program product can be applied to the AP in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the AP in the various methods of the embodiment of the present application. For the sake of brevity, they will not be described again here. .
  • the computer program product can be applied to the zero-power STA in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the zero-power STA in the various methods of the embodiment of the present application.
  • the computer program instructions cause the computer to execute the corresponding processes implemented by the zero-power STA in the various methods of the embodiment of the present application.
  • An embodiment of the present application also provides a computer program.
  • the computer program can be applied to the AP in the embodiments of the present application.
  • the computer program When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the AP in the various methods of the embodiments of the present application. For simplicity, in This will not be described again.
  • the computer program can be applied to the zero-power STA in the embodiment of the present application.
  • the computer program When the computer program is run on a computer, the computer executes the corresponding steps implemented by the zero-power STA in each method of the embodiment of the present application. The process, for the sake of brevity, will not be repeated here.
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of this embodiment.
  • each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit.
  • 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.
  • the technical solution of the present application is essentially or the part that contributes to the existing technology 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, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code. .

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Abstract

本申请实施例提供一种无线通信方法及装置、设备，该方法包括：零功耗站点STA被接入点AP指示是否接收第一物理层数据协议单元PPDU帧的数据部分。

Description

一种无线通信方法及装置、设备 技术领域
本申请实施例涉及移动通信技术领域，具体涉及一种无线通信方法及装置、设备。
背景技术
在无线保真(Wireless Fidelity，WiFi)的通信过程中，信号的收发基于本地的时钟确定，站点(Station，STA)的本地时钟也会定期的与接入点(Access Point，AP)进行对齐，保证STA与AP之间的定时一致即时间保持同步，从而在相应的时间进行数据的发送和接收。对于零功耗STA，本地的定时的精度较差，无法准确维持与AP之间的定时同步功能，因此，无法实现信息的准确发送和接收。
发明内容
本申请实施例提供一种无线通信方法及装置、设备。
本申请实施例提供的无线通信方法，包括：
零功耗站点STA被接入点AP指示是否接收第一物理层数据协议单元(Physical Layer Protocol Data Unit，PPDU帧)帧的数据部分。
本申请实施例提供的无线通信方法，包括：
接入点AP向零功耗站点STA指示是否接收第一物理层数据协议单元PPDU帧的数据部分。
本申请实施例提供的无线通信方法，包括：
零功耗站点STA接收接入点AP发送的第二信息，所述第二信息用于指示第一窗口的到达。
本申请实施例提供的无线通信方法，包括：
接入点AP向零功耗站点STA发送第二信息，所述第二信息用于指示第一窗口的到达。
本申请实施例提供的无线通信装置，应用于零功耗站点STA，包括：
第一通信单元，配置为被接入点AP指示是否接收第一物理层数据协议单元PPDU帧的数据部分。
本申请实施例提供的无线通信装置，应用于接入点AP，包括：
第二通信单元，配置为向零功耗站点STA指示是否接收第一物理层数据协议单元PPDU帧的数据部分。
本申请实施例提供的无线通信装置，应用于零功耗站点STA，包括：
第三通信单元，配置为接收接入点AP发送的第二信息，所述第二信息用于指示第一窗口的到达。
本申请实施例提供的无线通信装置，应用于接入点AP，包括：
第四通信单元，配置为向零功耗站点STA发送第二信息，所述第二信息用于指示第一窗口的到达。
本申请实施例提供的通信设备，可以是上述方案中的零功耗站点STA备或者是上述方案中的接入点AP，该通信设备包括处理器和存储器。该存储器用于存储计算机程序，该处理器用于调用并运行该存储器中存储的计算机程序，执行上述的无线通信方法。
本申请实施例提供的芯片，用于实现上述的无线通信方法。
具体地，该芯片包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有该芯片的设备执行上述的无线通信方法。
本申请实施例提供的计算机可读存储介质，用于存储计算机程序，该计算机程序使得计算机执行上述的无线通信方法。
本申请实施例提供的计算机程序产品，包括计算机程序指令，该计算机程序指令使得计算机执行上述的无线通信方法。
本申请实施例提供的计算机程序，当其在计算机上运行时，使得计算机执行上述的无线通信 方法。
通过上述技术方案，AP指示零功耗STA是否接收第一PPDU帧的数据部分，不需要零功耗STA在时间上与AP保持精准的同步的场景下，实现数据的正确接收。
附图说明
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1是本申请实施例的一个应用场景的示意图；
图2是本申请实施例的零功耗通信的可选地场景示意图；
图3是本申请实施例的反向散射通信的可选地场景示意图；
图4是本申请实施例的射频能量模块的可选地结构示意图；
图5是本申请实施例的零功耗终端的可选地结构示意图；
图6是本申请实施例的PPDU帧的可选地帧结构示意图；
图7是本申请实施例的PPDU帧的数据部分的可选地帧结构示意图；
图8是本申请实施例的MAC头的可选地帧结构示意图；
图9是本申请实施例的无线通信方法的可选地流程示意图；
图10是本申请实施例的无线通信方法的可选地流程示意图；
图11是本申请实施例的无线通信方法的可选地流程示意图；
图12是本申请实施例的第一PPDU帧的可选地帧结构示意图；
图13是本申请实施例的第一PPDU帧的可选地帧结构示意图；
图14是本申请实施例的第一PPDU帧的可选地帧结构示意图；
图15是本申请实施例的无线通信方法的可选地流程示意图；
图16是本申请实施例的无线通信方法的可选地流程示意图；
图17是本申请实施例的无线通信方法的可选地流程示意图；
图18是本申请实施例的第二PPDU帧的可选地帧结构示意图；
图19是本申请实施例的第二PPDU帧的SIGNAL字段的可选地帧结构示意图；
图20是本申请实施例的TWT机制的可选地示意图；
图21是本申请实施例的PPDU帧的可选地帧结构示意图；
图22是本申请实施例的PPDU帧的可选地帧结构示意图；
图23是本申请实施例的定时信息的可选地应用场景示意图；
图24是本申请实施例的PPDU帧的可选地帧结构示意图；
图25是本申请实施例的触发帧的可选地应用场景示意图；
图26是本申请实施例的RAW的可选地应用场景示意图；
图27是本申请实施例的触发帧的可选地应用场景示意图；
图28是本申请实施例的触发帧的可选地应用场景示意图；
图29是本申请实施例的触发帧的可选地应用场景示意图；
图30是本申请实施例的无线通信装置的可选地结构示意图；
图31是本申请实施例的无线通信装置的可选地结构示意图；
图32是本申请实施例的无线通信装置的可选地结构示意图；
图33是本申请实施例的无线通信装置的可选地结构示意图；
图34是本申请实施例提供的一种通信设备示意性结构图；
图35是本申请实施例的芯片的示意性结构图；
图36是本申请实施例提供的一种通信系统的示意性框图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
图1是本申请实施例的一个应用场景的示意图。
如图1所示，通信系统100可以包括零功耗STA110和接入点120。零功耗STA110可以通过WiFi与接入点120通信。零功耗STA110和接入点120之间支持多业务传输。
在图1所示的通信系统100中，接入点120可以为特定的地理区域提供通信覆盖，并且可以与位于该覆盖区域内的零功耗STA110进行通信。
该接入点120可以为中继站、接入点、车载设备、可穿戴设备、集线器、交换机、网桥、路由器等。
零功耗STA110可以是任意进行零功耗通信的终端设备。例如，零功耗STA110可以指接入终端、UE、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、IoT设备、卫星手持终端、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、5G网络中的终端设备或者未来演进网络中的终端设备等。
无线通信系统100还可以包括与接入点120进行通信的网络侧设备130，该网络侧设备130可以包括：5G接入网设备、5G核心网(5G Core，5GC)设备，例如，接入与移动性管理功能(Access and Mobility Management Function，AMF)，又例如，认证服务器功能(Authentication Server Function，AUSF)，又例如，用户面功能(User Plane Function，UPF)，又例如，会话管理功能(Session Management Function，SMF)。可选地，网络侧设备130也可以包括LTE网络的分组核心演进(Evolved Packet Core，EPC)设备，例如，会话管理功能+核心网络的数据网关(Session Management Function+Core Packet Gateway，SMF+PGW-C)设备。应理解，SMF+PGW-C可以同时实现SMF和PGW-C所能实现的功能。在网络演进过程中，上述网络侧设备也有可能叫其它名字，或者通过对网络侧设备的功能进行划分形成新的网络实体，对此本申请实施例不做限制。
图1示例性地示出了一个AP和两个零功耗STA，可选地，该无线通信系统100可以包括多个AP并且每个AP的覆盖范围内可以包括其它数量的零功耗ST，本申请实施例对此不做限定。
需要说明的是，图1只是以示例的形式示意本申请所适用的系统，当然，本申请实施例所示的方法还可以适用于其它系统。此外，本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。还应理解，在本申请的实施例中提到的“指示”可以是直接指示，也可以是间接指示，还可以是表示具有关联关系。举例说明，A指示B，可以表示A直接指示B，例如B可以通过A获取；也可以表示A间接指示B，例如A指示C，B可以通过C获取；还可以表示A和B之间具有关联关系。还应理解，在本申请的实施例中提到的“对应”可表示两者之间具有直接对应或间接对应的关系，也可以表示两者之间具有关联关系，也可以是指示与被指示、配置与被配置等关系。还应理解，在本申请的实施例中提到的“预定义”或“预定义规则”可以通过在设备(例如，包括零功耗STA和AP)中预先保存相应的代码、表格或其他可用于指示相关信息的方式来实现，本申请对于其具体的实现方式不做限定。比如预定义可以是指协议中定义的。还应理解，本申请实施例中，所述"协议"可以指通信领域的标准协议，例如可以包括LTE协议、NR协议以及应用于未来的通信系统中的相关协议，本申请对此不做限定。
为便于理解本申请实施例的技术方案，以下对本申请实施例的相关技术进行说明，以下相关技术作为可选方案与本申请实施例的技术方案可以进行任意结合，其均属于本申请实施例的保护范围。
零功耗通信
近年来，零功耗终端的应用越来越广泛。一种典型的零功耗终端是通过射频识别(Radio Frequency Identification，RFID)实现的RFID标签，RFID是利用无线射频信号空间耦合的方式，实现无接触的标签信息自动传输与识别的技术。RFID标签又称为“射频标签”或“电子标签”。
最基本的RFID系统，包括：电子标签(TAG)和读写器(Reader/Writer)两部分。电子标签包括耦合组件及芯片，每个电子标签都有独特的电子编码，放在被测目标上以达到标记目标物体的目的。读写器不仅能够读取电子标签上的信息，而且还能够写入电子标签上的信息，同时为电子标签提供通信所需要的能量。电子标签进入读写器的电磁场后，接收读写器发出的射频信号，无源电子标签或者被动电子标签利用空间中产生的电磁场得到的能量，将电子标签存储的信息传送出去，读写器读取信息并且进行解码，从而识别电子标签。
如图2所示，RFID系统200包括电子标签201和读写器202。其中，读写器202向电子标签201 发送供能信号或通信信号203以及接收电子标签201的反向散射信号204。
如图2所示，电子标签201包含能量采集模块2011、反向散射通信模块2012以及低功耗计算模块2013。可理解的，电子标签201还可具备存储器或传感器，存储器用于存储一些基本信息(如电子编码等)，传感器用于获取环境温度、环境湿度等传感数据。
基于零功耗终端实现的通信称为零功耗通信，零功耗通信的关键技术包括：反向散射通信(backscatter communication)、能量采集、负载调制和编码。
第一、反向散射通信反向散射通信的工作原理如图3所示，零功耗终端301接收反向散射读写器302发送的载波303，通过RF能量采集模块3011采集能量，进而对低功耗计算模块3012(也可称为逻辑模块)进行功能，并对接收的载波303进行调制以加载需要发送的信息，并将调制后的信号作为反向散射信号304从天线辐射出去，这一信息传输过程称之为反向散射通信。其中，反向散射读写器302的发送(TX)和放大器(amplifier，AMP)连接，反向散射读写器302的接收(RX)和低噪声放大器(Low Noise Amplifier，LNA)连接。
反向散射通信具备以下特征：
(1)零功耗终端不主动发射信号，通过调制来波信号实现反向散射通信；
(2)零功耗终端不依赖传统的有源功放发射机，同时使用低功耗计算单元，极大降低硬件复杂度；
(3)结合能量采集可实现免电池通信。
第二、能量采集
能量采集由能量采集模块实施。
能量采集模块基于电磁感应原理实现对空间电磁波能量的采集，进而获得驱动负载电路工作所需的能量，例如，获得用于低功耗计算、传感器以及内存读取等的能量，已实现免电池。
能量采集模块的结构如图4所示，包括：二极管401、电容402和电阻403，从而采集空间的射频(Radio Frequency，RF)的能量。
可选地，电容402连接二极管401的一端为正极。
第三、负载调制
负载调制是电子标签经常使用的向读写器传输数据的方法。负载调制通过对电子标签振荡回路的电参数按照数据流的节拍进行调节，使电子标签阻抗的大小和相位随之改变，从而完成调制的过程。负载调制技术主要有电阻负载调制和电容负载调制两种方式。
在电阻负载调制中，如图5所示，负载R L并联一个电阻R 3，电阻R 3可称为负载调制电阻。开关S的通断由二进制数据编码的数据流控制，R 3的接通或断开可通过开关S的通断实现。如图5所示，零功耗终端还包括有：电阻R 2、电感L 1、电感L 2、电容C 2。电阻R 3的通断会导致震荡电路的电压的变化，从而实现振幅键控(Amplitude Shift Keying，ASK)调制，即通过调整零功耗设备的反向散射信号的幅度大小实现信号的调制与传输。
类似地，在电容负载调制中，负载并联一个电容，通过电容的通断可以实现震荡电路的谐振频率的变化，实现频率键控调制(Frequency Shift Key，FSK)，即通过调整零功耗终端的反向散射信号的工作频率实现信号的调制与传输。
可见，零功耗终端借助于负载调制的方式，对来波信号进行信息调制，从而实现反向散射通信过程。
第四、编码
零功耗设备传输的数据，可以用不同编码形式的代码来表示二进制的“1”和“0”。通常使用的编码方式包括下列编码方式中的一种：反向不归零(Non Return Zero，NRZ)编码、曼彻斯特(Manchester)编码、单极性归零(Unipolar RZ)编码、差动双相(Differential Binary Phase，DBP)编码、米勒(Miller)编码和差动编码。使用不同的编码方式，可理解为，用不同的脉冲信号表示0和1。
零功耗终端的分类
基于零功耗终端的能量来源以及使用方式可以将零功耗终端分为如下类型：
1)无源零功耗终端
零功耗终端不需要内装电池，零功耗终端接近网络设备时，零功耗终端处于网络设备天线辐射形成的近场范围内。因此，零功耗终端天线通过电磁感应产生感应电流，感应电流驱动零功耗终端的低功耗芯片电路，实现对前向链路信号的解调，以及后向链路的信号调制等工作。对于反向散射链路，零功耗终端使用反向散射实现方式进行信号的传输。
无源零功耗终端无论是前向链路还是反向链路都不需要内置电池来驱动，是一种真正意义的零功耗终端。
无源零功耗终端不需要电池，射频电路以及基带电路都非常简单，例如不需要LNA、PA、晶振、模数转换器(Analog-to-Digital Converter，ADC)等器件，因此，无源零功耗终端具有体积小、重量轻、价格非常便宜、使用寿命长等诸多优点。
2)半无源零功耗终端
半无源零功耗终端自身也不安装常规电池，但可使用能量采集模块采集无线电波能量，同时将采集的能量存储于一个储能单元(如电容)中。储能单元获得能量后，可以驱动零功耗终端的低功耗芯片电路。实现对前向链路信号的解调，以及后向链路的信号调制等工作。对于反向散射链路，半无源零功耗终端使用反向散射实现方式进行信号的传输。
半无源零功耗终端无论是前向链路还是反向链路都不需要内置电池来驱动，虽然工作中使用了电容储存的能量，但能量来源于能量采集模块采集的无线电能量，因此，半无源零功耗终端也是一种真正意义的零功耗终端。
半无源零功耗终端继承了无源零功耗终端的诸多优点，具有体积小、重量轻、价格非常便宜、使用寿命长等诸多优点。
3)有源零功耗终端
有些场景下使用的零功耗终端也可以为有源零功耗终端，有源零功耗终端可以内置电池。电池用于驱动零功耗终端的低功耗芯片电路，实现对前向链路信号的解调，以及后向链路的信号调制等工作。但对于反向散射链路，有源零功耗终端使用反向散射实现方式进行信号的传输。因此，这类终端的零功耗主要体现于反向链路的信号传输不需要终端自身功率，而是使用反向散射的方式。
有源零功耗终端，内置电池向RFID芯片供电，以增加标签的读写距离，提高通信的可靠性。在一些对通信距离，读取时延等方面要求相对较高的场景得以应用。
蜂窝无源物联网
随着5G行业应用增加，连接物的种类和应用场景越来越多，对通信终端的价格和功耗也将有更高要求，免电池、低成本的无源物联网设备的应用成为蜂窝物联网的关键技术，充实5G网络连接终端类型和数量，真正实现万物互联。其中，无源物联网设备可以基于现有的零功耗终端，并在此基础上进行延伸，以适用于蜂窝物联网。
802.11技术中的PPDU帧
WiFi设备的信息是以PPDU帧为基础进行传输的。如图6所示，PPDU帧包括物理层部分和数据部分。例如，802.11a/g的物理层部分包括：物理层前导(preamble)和物理层头部。物理层preamble包括：短训练字段(Short Training Field，STF)，长训练字段(Long Training Field，LTF)，物理层头部包括以下字段：信令(SIGNAL)。可理解的，PPDU帧的结构包括但不限于图6所示的结构。
STF由10个短的符号(symbol)(t1-t10)组成，每一个symbol是0.8us，其包含了很多个功能，主要实现帧同步和粗频率同步。t1-t7的功能包含：信号检测(Signal Detect)、自动增益控制(Automatic Gain Control，AGC)以及天线选择(Diversity Selection)功能，t8-t10的功能包括：粗频率(Coarse Freq)、偏移量估计(Offset Estimation)、时间同步(Timing Synchronize)功能。LTF实现细频率同步和信道估计。SIGNAL承载数据部分相关的信息，包括：数据传输速率、数据包的长度信息(Length)、保留位和尾比特位。
PPDU帧的数据部分承载媒体接入控制(Medium Access Contro，MAC)帧，MAC帧的帧格式，如图7所示，包括：MAC头(header)，帧主体(frame body)部分，以及帧检测序列(Frame Check Sequence，FCS)，其中，MAC header部分包括以下域：帧控制(Frame control)、持续时间/标识(Duration/ID)、地址1(Address 1)、地址2(Address 2)、地址3(Address 3)、序列控制(Sequence Control)、地址4、服务质量(Quality of Service，QoS)控制、高吞吐量控制(HT Control)。
如图8所示，MAC header的Frame control域包含以下信息：
1)协议版本(Protocol Version)：为0或1；
2)类型(Type)：
a)控制帧：用于竞争期间的握手通信和正向确认、结束非竞争期等；
b)管理帧：主要用于STA与AP之间协商、关系的控制，如关联、认证、同步等；
c)数据帧：用于在竞争期和非竞争期传输数据；
3)子类型(Subtype)：指示进一步判断帧类型的子类型；
4)至分布式系统(Distribution System，DS)(To DS)：表明该帧是否是基本服务集(Basic Service  Set，BSS)向DS发送的帧；
5)来自DS(From DS)：表明该帧是否是DS向BSS发送的帧；
6)更多分段(More Fragment)：用于说明长帧被分段的情况，是否还有其它的帧，如果有则该值设置为1；
7)重传(Retry)：表示该分段是先前传输分段的重发帧；
8)能量管理(Power Management)：表示传输帧以后，站点(Station，STA)所采用的电源管理模式；
9)更多数据(More Data)：表示有很多帧缓存到站中，即至少还有一个数据帧要发送给STA时设置为1；
10)被保护帧(Protected Frame)：表示根据算法对帧主体进行加密，如果帧主体包含被密钥处理过的数据，则设置为1，否则设置为0；
11)+HTC：与HT Control域相关的指示位。
Duration/ID域指示该帧和它的确认帧将会占用信道多长时间，Duration值用于网络分配向量(Network Allocation Vector，NAV)计算。
Address域可以指示：
1)目的地址(Destination Address)
2)源地址(Source Address)
3)传输工作站地址(transmitting address，TA)
4)接收工作站地址(receiving address，RA)
5)BSS标识(ID)。
Sequence Control域：用于过滤重复帧，由代表MAC服务数据单元(MAC Server Data Unit，MSDU)或者MAC管理服务数据单元(MAC Management Server Data Unit，MMSDU)的12位序列号(Sequence Number)和表示MSDU和MMSDU的每一个片段的编号的4位片段号(Fragment Number)组成。
QoS Control域：802.11e中新增的一个MAC层的字段，用于优先级控制。该字段只有数据帧是QOS数据子类型的时候才有。
HT Control域：802.11n中新增的一个MAC层的字段。由于从802.11n开始，MAC开始支持40M带宽，就是把原来的2个20M带宽合并一个40M带宽，这个字段为高吞吐量的数据提供一些控制。该字段只有在帧设置为高吞吐帧时候才有。
Frame Body(Data)：发送或接收的信息或数据。
FCS：包括32位的循环冗余校验(Cyclic Redundancy Checksum，CRC)，用于检错。
由于零功耗终端可以是无源的，其并不具备电池，需要通过外部环境获得能量进行工作，如通过射频信号、自然光、压力、热等方式采集能量。这些能量的获得并不能为零功耗终端的工作提供稳定的能量，包括驱动零功耗终端的时钟电路。即使零功耗终端获得能量驱动零功耗终端的时钟电路，受限于成本和功耗原因，零功耗的时钟电路部分往往采用RC振荡器的简化电路，这种电路的定时、频率、相位等的误差都比较大。实测的RC振荡器的误差约在0.89％。而目前802.11的设备的时钟精确度高达±20ppm，由高精度的晶体振荡器实现。
零功耗终端无法获得精确的时钟，会导致无法进行正确的数据收发。在现有的wifi技术中，并未考虑零功耗终端无法获得精确时钟对通信的影响。
为便于理解本申请实施例的技术方案，以下通过具体实施例详述本申请的技术方案。以上相关技术作为可选方案与本申请实施例的技术方案可以进行任意结合，其均属于本申请实施例的保护范围。本申请实施例包括以下内容中的至少部分内容。
本申请实施例提供的无线通信方法如图9所示，应用于零功耗STA，包括：
S901、零功耗站点STA被接入点AP指示是否接收第一物理层数据协议单元PPDU帧的数据部分。
零功耗STA也可以理解为接入AP的低功耗设备或零功耗终端，零功耗STA可以使无源的，可以是半无源的，也可以是有源的。
零功耗STA和接入的AP可构成零功物联网。
AP向零功耗STA发送第一PPDU帧，其中，第一PPDU帧可为AP向零功耗STA发送的任一PPDU帧。第一PPDU帧的帧类型包括但不限定于：信标(Beacon)帧，关联请求帧、探测请求帧等。本申请实施例对第一PPDU帧的帧类型不进行任何限定。
第一AP还向零功耗STA指示是否接收第一PPDU帧的数据部分。此时，零功耗STA被AP指示是否接收第一PPDU帧的数据部分。
本申请实施例中，AP仅指示零功耗ST是否接收第一PPDU帧的数据部分，零功耗STA是否进行第一PPDU帧的数据部分的接收可由零功耗STA自身决定。
可选地，若零功耗STA被AP指示接收第一PPDU帧的数据部分，则零功耗STA判断是否接收第一PPDU帧的数据部分，并根据判断结果接收或不接收第一PPDU帧的数据部分。
可选地，若零功耗ST被AP指示不接收第一PPDU帧的数据部分，则零功耗STA不进行是否接收第一PPDU帧的数据部分的判断。
本申请实施例提供的无线通信方法，AP指示零功耗STA是否接收第一PPDU帧的数据部分，在零功耗STA未与AP在时间上保持精准同步的情况下，通过AP的指示能够获知是否接收第一PPDU帧的数据部分，从而在零功耗STA在时间上未与AP保持精准的同步的场景下不影响数据的接收，且保证零功耗STA的低复杂度和低功耗。
在一些实施例中，所述零功耗STA被AP指示是否接收第一PPDU帧的数据部分，包括：
所述零功耗STA接收所述AP发送的第一信息，所述第一信息用于指示所述零功耗STA是否接收所述第一PPDU帧；或者，所述第一信息用于指示所述零功耗STA是否接收所述第一PPDU帧的数据部分。
可选地，零功耗STA接收AP发送的第一信息，第一信息用于指示零功耗STA是否接收所述第一PPDU帧。若第一信息用于指示零功耗STA接收第一PPDU帧，则零功耗STA被AP指示接收第一PPDU帧的数据部分，即AP指示零功耗STA接收第一PPDU帧的数据部分。若第一信息用于指示零功耗STA不接收第一PPDU帧，则零功耗STA被AP指示不接收第一PPDU帧的数据部分，即AP指示零功耗STA不接收第一PPDU帧的数据部分。
在第一信息指示零功耗STA是否接收所述第一PPDU帧的情况下，第一信息与第一PPDU帧独立。
可选地，零功耗STA接收AP发送的第一信息，第一信息用于指示零功耗STA是否接收所述第一PPDU帧的数据部分。若第一信息用于指示零功耗STA接收第一PPDU帧的数据部分，则零功耗STA被AP指示接收第一PPDU帧的数据部分，即AP指示零功耗STA接收第一PPDU帧的数据部分。若第一信息用于指示零功耗STA不接收第一PPDU帧的数据部分，则零功耗STA被AP指示不接收第一PPDU帧的数据部分，即AP指示零功耗STA不接收第一PPDU帧的数据部分。
在第一信息指示零功耗STA是否接收所述第一PPDU帧的数据部分的情况下，第一信息可承载在第一PPDU帧上。
若第一信息承载在第一PPDU帧上，零功耗终端可接收每一个PPDU帧。在接收到一个PPDU帧后，零功耗STA对接收的PPDU帧进行解析，得到第一信息，基于第一信息确定是否接收该PPDU帧的数据部分。
本申请实施例中，AP向零功耗STA发送第一信息，零功耗STA接收AP发送的第一信息，第一信息用于AP指示零功耗STA是否接收第一PPDU帧的数据部分，在零功耗STA与AP的时间未精准同步的情况下，能够获知是否需要接收第一PPDU帧的数据部分，保证零功耗STA的低复杂度和低功耗。
本申请实施例提供的无线通信方法如图10所示，应用于AP，包括：
S1001、接入点AP指示零功耗站点STA是否接收第一物理层数据协议单元PPDU帧的数据部分。
零功耗STA也可以理解为接入AP的低功耗设备，零功耗STA可以使无源的，可以是半无源的，也可以是有源的。
零功耗STA和接入的AP可构成零功物联网。
AP向零功耗STA发送第一PPDU帧其中，第一PPDU帧可为AP向零功耗STA发送的任一PPDU帧。第一PPDU帧的帧类型包括但不限定于：Beacon帧，关联请求帧、探测请求帧等。本申请实施例对第一PPDU帧的帧类型不进行任何限定。
AP还向零功耗STA指示是否接收第一PPDU帧的数据部分。此时，零功耗STA被AP指示是否接收第一PPDU帧的数据部分。
本申请实施例中，AP仅指示零功耗ST是否接收第一PPDU帧的数据部分，零功耗STA是否进行第一PPDU帧的数据部分的接收可由零功耗STA自身决定。
可选地，若零功耗STA被AP指示接收第一PPDU帧的数据部分，则零功耗STA判断是否接收 第一PPDU帧的数据部分，并根据判断结果接收或不接收第一PPDU帧的数据部分。
可选地，若零功耗ST被AP指示不接收第一PPDU帧的数据部分，则零功耗STA不进行是否接收第一PPDU帧的数据部分的判断。
本申请实施例提供的无线通信方法，AP指示零功耗STA是否接收第一PPDU帧的数据部分，在零功耗STA未与AP在时间上保持精准同步的情况下，通过AP的指示能够获知是否接收第一PPDU帧的数据部分，从而在零功耗STA在时间上未与AP保持精准的同步的场景下不影响数据的接收，且保证零功耗终端的低复杂度和低功耗。
在一些实施例中，所述AP指示所述零功耗STA是否接收第一PPDU帧的数据部分，包括：
所述AP向所述零功耗STA发送第一信息，所述第一信息用于指示所述零功耗STA是否接收所述第一PPDU帧；或者，所述第一信息用于指示所述零功耗STA是否接收所述第一PPDU帧的数据部分。
可选地，零功耗STA接收AP发送的第一信息，第一信息用于指示零功耗STA是否接收所述第一PPDU帧。若第一信息用于指示零功耗STA接收第一PPDU帧，则零功耗STA被AP指示接收第一PPDU帧的数据部分，即AP指示零功耗STA接收第一PPDU帧的数据部分。若第一信息用于指示零功耗STA不接收第一PPDU帧，则零功耗STA被AP指示不接收第一PPDU帧的数据部分，即AP指示零功耗STA不接收第一PPDU帧的数据部分。
在第一信息指示零功耗STA是否接收所述第一PPDU帧的情况下，第一信息与第一PPDU帧独立。
可选地，零功耗STA接收AP发送的第一信息，第一信息用于指示零功耗STA是否接收所述第一PPDU帧的数据部分。若第一信息用于指示零功耗STA接收第一PPDU帧的数据部分，则零功耗STA被AP指示接收第一PPDU帧的数据部分，即AP指示零功耗STA接收第一PPDU帧的数据部分。若第一信息用于指示零功耗STA不接收第一PPDU帧的数据部分，则零功耗STA被AP指示不接收第一PPDU帧的数据部分，即AP指示零功耗STA不接收第一PPDU帧的数据部分。
在第一信息指示零功耗STA是否接收所述第一PPDU帧的数据部分的情况下，第一信息可承载在第一PPDU帧上。
本申请实施例中，AP向零功耗STA发送第一信息，零功耗STA接收AP发送的第一信息，第一信息用于AP指示零功耗STA是否接收第一PPDU帧的数据部分，在零功耗STA与AP的时间未精准同步的情况下，能够获知是否需要接收第一PPDU帧的数据部分，保证零功耗STA的低复杂度和低功耗。
本申请实施例提供的无线通信方法如图11所示，应用于包括AP和零功耗STA的通信系统，包括：
S1101、AP向零功耗STA发送第一信息。
可选地，第一信息用于指示零功耗STA是否接收第一PPDU帧；
可选地，第一信息用于指示零功耗STA是否接收第一PPDU帧的数据部分。
S1102、零功耗STA根据第一信息确定AP指示零功耗STA是否接收第一PPDU帧的数据部分。
以第一信息用于指示零功耗STA是否接收第一PPDU帧为例，若第一信息用于指示零功耗STA接收第一PPDU帧的数据部分，则零功耗STA被AP指示接收第一PPDU帧的数据部分，即AP指示零功耗STA接收第一PPDU帧的数据部分，此时，零功耗STA根据第一信息确定AP指示零功耗STA接收第一PPDU帧的数据部分。若第一信息用于指示零功耗STA不接收第一PPDU帧的数据部分，则零功耗STA被AP指示不接收第一PPDU帧的数据部分，即AP指示零功耗STA不接收第一PPDU帧的数据部分，此时，零功耗STA根据第一信息确定AP指示零功耗STA不接收第一PPDU帧的数据部分。
以第一信息用于指示零功耗STA是否接收第一PPDU帧的数据部分为例，若第一信息用于指示零功耗STA接收第一PPDU帧的数据部分，则零功耗STA被AP指示接收第一PPDU帧的数据部分，即AP指示零功耗STA接收第一PPDU帧的数据部分，此时，零功耗STA根据第一信息确定AP指示零功耗STA接收第一PPDU帧的数据部分。若第一信息用于指示零功耗STA不接收第一PPDU帧的数据部分，则零功耗STA被AP指示不接收第一PPDU帧的数据部分，即AP指示零功耗STA不接收第一PPDU帧的数据部分，此时，零功耗STA根据第一信息确定AP指示零功耗STA不接收第一PPDU帧的数据部分。
下面，对本申请实施例提供的无线通信方法中的第一信息进行说明。
所述第一信息包括以下至少之一，包括：
第一指示信息，所述第一指示信息用于指示所述第一PPDU帧的帧类型；
第二指示信息，所述第二指示信息用于指示第一时间信息，所述第一时间信息对应接收所述第一PPDU帧的时间；
第三指示信息，所述第三指示信息用于指示所述第一PPDU帧的接收端。
本申请实施例中，第一信息可包括第一指示信息、第二指示信息和第三指示信息中的一个或多个。
对于第一指示信息，AP通过第一指示信息向零功耗STA指示第一PPDU帧的帧类型，零功耗STA根据第一指示信息指示的帧类型确定第一PPDU帧是否为目标接收帧。其中，目标接收帧的帧类型为目标帧类型。
在一些实施例中，所述第一指示信息指示所述第一PPDU帧的帧类型为目标帧类型的情况下，所述第一指示信息用于指示所述零功耗STA接收所述第一PPDU帧的数据部分。
这里，目标帧类型为当前需要接收的PPDU帧即目标接收帧的帧类型。
若第一指示信息指示第一PPDU帧的帧类型为目标帧类型，则第一PPDU帧为目标接收帧，AP通过第一指示信息向零功耗STA通知当前的第一PPDU帧为目标接收帧，可理解的，AP通过指示目标帧类型的第一指示信息指示零功耗STA接收第一PPDU帧。
若所述第一指示信息指示所述第一PPDU帧的帧类型不是目标帧类型，第一PPDU帧不是目标接收帧，则AP通过第一指示信息指示零功耗STA不接收第一PPDU帧的数据部分。或者，若第一信息中未携带指示目标帧类型的第一指示信息，则第一PPDU帧不是目标接收帧，则AP指示零功耗STA不接收第一PPDU帧的数据部分。
可选地，目标帧类型可为零功耗STA根据通信需求确定，比如：Beacon帧、关联请求帧、数据帧、确认(ACK)帧等。这里，将帧类型为目标帧类型的第一PPDU帧可称为需要接收的目标接收帧。
AP可仅在发送帧类型为目标帧类型的第一PPDU帧时，发送针对第一PPDU帧的第一指示信息，且第一指示信息指示目标帧类型，此时，当零功耗STA接收到第一指示信息，则确定AP指示零功耗STA接收第一PPDU帧的数据部分。
在一示例中，目标帧类型为Beacon帧，当AP发送的第一PPDU帧为Beacon帧，则向零功耗STA发送第一指示信息，且第一指示信息指示Beacon帧，当零功耗接收到指示Beacon的第一指示信息，确定被AP指示接收当前第一指示信息针对的第一PPDU帧，且第一PPDU帧为Beacon帧。
在一示例中，目标帧类型为Beacon帧，当AP发送的第一PPDU帧不是Beacon帧，则不向零功耗STA发送指示Beacon帧的第一指示信息，当零功耗未接收到第一指示信息，确定被AP指示不接收当前第一指示信息针对的第一PPDU帧，且第一PPDU帧不是Beacon帧。
AP也可在发送第一PPDU帧时，发送针对第一PPDU帧的第一指示信息，且第一指示信息指示第一PPDU帧的帧类型；零功耗STA接收到第一指示信息，确定第一指示信息指示的帧类型为目标帧类型，则确定AP指示零功耗STA接收第一PPDU帧的数据部分。
在一示例中，目标帧类型为Beacon帧，当AP发送的第一PPDU帧为Beacon帧，则向零功耗STA发送的第一指示信息为信息1，信息1指示的帧类型为Beacon帧，当零功耗接收到的第一指示信息为信息1，基于信息1确定第一PPDU帧为Beacon帧，则基于信息1确定被AP指示接收第一PPDU帧。
在一示例中，目标帧类型为Beacon帧，当AP发送的第一PPDU帧为允许发送(Clear to Send，CTS)帧，则向零功耗STA发送的第一指示信息为信息2，信息2指示的帧类型为CTS帧，当零功耗接收到的第一指示信息为信息2，基于信息2确定第一PPDU帧为CTS帧，则基于信息2确定被AP指示不接收第一PPDU帧。
在一些实施例中，所述第一指示信息包括以下之一：类型信息或子类型信息。
类型信息可理解为type，用于指示控制帧、管理帧或数据帧等类型，控制帧用于竞争期间的握手通信和正向确认、结束非竞争期等，例如：请求发送(Request to Send，RTS)帧、CTS帧、ACK帧；管理帧用于零功耗STA与AP之间协商、关系的控制，例如：Beacon帧、关联(Association)帧等；数据帧用于在竞争期和非竞争期传输数据。
子类型信息可理解为subtype，子类型和类型的组合用于确定第一PPDU帧的帧类型。
在一示例中，类型信息为指示控制帧的01，子类型为1100，则帧类型为CTS帧。
在一示例中，类型信息为指示管理帧的00，子类型为1000，则帧类型为Beacon帧。
在一些实施例中，所述第一指示信息为第一特征序列，所述第一特征序列为标识所述第一PPDU帧的帧类型的特征序列。
可选地，第一特征序列指示的帧类型为目标帧类型。在一示例中，目标帧帧类型为帧类型1，帧类型1对应的第一特征序列为序列1。
可选地，不同的帧类型对应的第一特征序列不同。在一示例中，帧类型1对应的第一特征序列为序列1，帧类型2对应的第一特征序列为序列2。
可理解的，第一特征序列可包括类型信息和/或子类型信息，也可为自定义的序列。
在一些实施例中，所述第一指示信息为第一物理前导，所述第一物理前导为标识所述第一PPDU帧的帧类型的物理层前导。
可选地，第一物理前导指示的帧类型为目标帧类型。在一示例中，目标帧帧类型为帧类型1，帧类型1对应的第一物理前导为前导1。
可选地，不同的帧类型对应的物理前导不同，在一示例中，帧类型1对应的第一物理前导为物理前导1，帧类型2对应的第一物理前导为物理前导2。
可理解的，AP发送至零功耗STA的第一物理前导根据第一PPDU帧的帧类型确定，而不是固定的。
本申请实施例中，第一指示信息与第一PPDU帧的关系包括以下之一：
关系A1、所述第一指示信息独立于所述第一PPDU帧。
关系A2、所述第一指示信息承载在所述第一PPDU帧上。
在关系A1中，第一指示信息独立于第一PPDU帧，第一指示信息可与第一PPDU帧同时从AP发送至零功耗STA，也可分开从AP发送至零功耗STA。
零功耗STA接收到第一指示信息后，基于第一指示信息确定第一PPDU帧的帧类型为目标帧类型，则第一指示信息指示零功耗STA接收第一PPDU帧，即指示接收第一PPDU帧的物理部分和数据部分。
在关系A2中，第一指示信息承载在第一PPDU帧上。
零功耗STA接收第一PPDU帧，并对接收的第一PPDU帧进行解析，得到第一指示信息，且第一指示信息指示目标帧类型的情况下，零功耗STA确定被AP指示接收第一PPDU帧的数据部分。
在一示例中，第一指示信息承载在第一PPDU帧的MAC头中，零功耗STA接收到第一PPDU帧的数据部分的MAC头，零功耗STA需要接收数据部分并进行解码和校验，来确定帧类型。若零功耗STA确定帧类型为目标帧类型，则继续接收第一PPDU帧的数据部分的其他数据。可理解的，零功耗STA需要第一PPDU帧的MAC部分承载的信息确定当前接收的第一PPDU帧的帧类型是否为目标帧类型，这对零功耗STA的能力和功能提出更高的要求。
在一些实施例中，所述第一指示信息承载在所述第一PPDU帧的物理层部分。
AP在发送第一PPDU帧时，可以在第一PPDU帧的物理层部分承载第一指示信息。零功耗STA检测到第一PPDU帧的物理层部分，则确定第一PPDU帧是否为目标接收帧。若第一PPDU帧为目标接收帧，则确定被AP指示接收第一PPDU帧。若第一PPDU帧不是目标接收帧，则确定被AP指示不接收第一PPDU帧。
第一指示信息可承载在第一PPDU帧的物理层前导或物理层头部，也可承载在物理层部分的其他位置。
在一示例中，在第一PPDU帧的物理层前导增加第一指示信息。零功耗STA检测到PPDU帧的物理层前导，进而根据第一指示信息的检测，就可以确定第一PPDU帧是否为目标接收帧。
在一示例中，在第一PPDU帧的物理层头部增加第一指示信息。零功耗STA检测到PPDU帧的物理层头，进而根据第一指示信息的检测，就可以确定第一PPDU帧是否为目标接收帧。
在一示例中，第一指示信息在物理层部分的位置如图12所示，位于物理部分中SIGNAL后。
本申请实施例中，第一指示信息在第一PPDU帧的物理层部分的位置并不唯一。第一PPDU帧的物理层部分包含的其他字段也不做限定。
对于第二指示信息，AP通过第二指示信息向零功耗STA指示第一时间信息，零功耗STA根据第二指示信息确定第一时间信息。其中，所述第一时间信息对应第一PPDU帧的接收时间。
在一些实施例中，所述第二指示信息用于指示所述零功耗STA接收所述第一PPDU帧的数据部分。
这里，在第一PPDU帧为目标接收帧的情况下，AP向零功耗STA发送第二指示信息，且第二指示信息指示的第一时间信息对应第一PPDU帧的接收时间。零功耗STA根据第二指示信息确定AP指示零功耗STA接收第一PPDU帧，且第一PPDU帧的接收时间对应第一时间信息。
第二指示信息指示的第一时间信息可为第一时刻、第一时长，也可为指示到达接收时间的到达指示。
若第一时间信息为第一时刻，则第一PPDU帧的接收时间为第一时刻或第二时刻，第二时刻为第一时刻加上第二时长得到的时刻。
若第一时间信息为第一时长，则第一PPDU帧的接收时间为第三时刻，第三时刻为距离接收到第二指示信息的时间间隔第一时长后的时刻。
若第一时间信息为到达指示，则第一PPDU帧的接收时间为第四时刻或第五时刻，第四时刻为接收到第二指示信息的时刻，第五时刻为第四时刻加上第三时长后的时刻。
可理解的，零功耗STA接收的第一PPDU帧为第一PPDU帧的接收时间之后接收到的第一个PPDU帧。
这里，零功耗STA基于第二指示信息确定第一PPDU帧的接收时间后，在确定第一PPDU帧的接收时间之前进入休眠状态，在到达第一PPDU帧的接收时间之后进入苏醒状态，以监听AP发送的第一PPDU帧。
在一些实施例中，所述第一时间信息对应第一传送时间或第一时间间隔；所述第一传送时间为所述AP周期性发送所述第一PPDU帧的发送时间，所述第一时间间隔为所述零功耗STA两次唤醒状态之间的休眠状态的时长。
第一时间信息对应的第一传送时间的情况下，第一PPDU帧为周期性发送的PPDU帧，比如：Beacon帧。
在第一PPDU帧为Beacon帧的情况下，第一传送时间可为信标预定传送时间(Target Beacon Transmission Time，TBTT)。TBTT是发送/接收Beacon帧动作的周期性时间，其周期的时间就是由信标间隔(Beacon Interval)所决定的，Beacon Interval指示发送Beacon的时间间隔。
第一时间信息对应第一时间间隔的情况下，零功耗STA间隔第一时间间隔后，进入唤醒状态，并在唤醒状态下进行第一PPDU帧的监听。这里，第一PPDU帧可为Beacon帧。
在第一PPDU帧为Beacon帧的情况下，第一时间间隔可为监听间隔，一个监听间隔可经历至少一次TBTT。
在一些实施例中，所述第一时间信息的时间粒度为第二时间间隔，所述第二时间间隔为所述AP发送所述第一PPDU帧的发送间隔。
这里，Beacon帧中指示的时间戳Timestamp字段包括64比特，用来同步BSS中的STA的情况下，第二指示信息只需要占用Timestamp字段中的部分比特，不需要占用Timestamp字段的全部的64个比特。
这里，AP间隔第二时间间隔发送一次第一PPDU帧，因此，第一时间信息的时间粒度为第二时间间隔，在保证零功耗STA正确接收第一PPDU帧的情况下，不需要将第一时间信息的时间粒度限制在微秒，实现零功耗STA的低复杂度。
本申请实施例中，第二指示信息与第一PPDU帧的关系包括以下之一：
关系B1、所述第二指示信息独立于所述第一PPDU帧。
关系B2、所述第二指示信息承载在所述第一PPDU帧上。
在关系B1中，第二指示信息独立于第一PPDU帧，第二指示信息可与第一PPDU帧同时从AP发送至零功耗STA，也可分开从AP发送至零功耗STA。
零功耗STA接收到第二指示信息后，基于第二指示信息确定第一时间信息，则第二指示信息用于指示零功耗STA接收第一PPDU帧，且在第一PPDU帧的接收时间接收第一PPDU帧。
在第二指示信息独立于第一PPDU帧的情况下，第二指示信息可位于第一PPDU帧之前的任一PPDU帧上。
在关系B2中，第二指示信息承载在第一PPDU帧上。
零功耗STA接收第一PPDU帧，并对接收的第一PPDU帧进行解析，得到第二指示信息，零功耗STA确定被AP指示接收第一PPDU帧的数据部分。
在一示例中，第二指示信息承载在第一PPDU帧的MAC头中，零功耗STA接收到第一PPDU帧的数据部分的MAC头，STA需要接收数据部分并进行解码和校验，来确定第二指示信息。若第二指示信息指示的第一时间对应当前第一PPDU帧的接收时间，则零功耗STA继续接收第一 PPDU帧的数据部分的其他数据。
在一些实施例中，所述第二指示信息承载在所述第一PPDU帧的物理层部分。
AP在发送第一PPDU帧时，可以在第一PPDU帧的物理层部分承载第二指示信息。零功耗STA检测到第一PPDU帧的物理层部分，确定第一时间信息，并根据第一时间信息确定是否进行第一PPDU帧的接收，在接收的情况下，确定当前第一PPDU帧为目标接收帧。若第一PPDU帧为目标接收帧，则确定被AP指示接收第一PPDU帧的数据部分。若第一PPDU帧不是目标接收帧，则确定被AP指示不接收第一PPDU帧的数据部分。
第二指示信息可承载在第一PPDU帧的物理层前导或物理层头部，也可承载在物理层部分的其他位置。
在一示例中，在第一PPDU帧的物理层前导增加第二指示信息。零功耗STA检测到PPDU帧的物理层前导，进而根据第二指示信息的检测，就可以确定第一PPDU帧是否为目标接收帧。
在一示例中，在第一PPDU帧的物理层头部增加第二指示信息。零功耗STA检测到PPDU帧的物理层头，进而根据第二指示信息的检测，就可以确定第一PPDU帧是否为目标接收帧。
在一示例中，第二指示信息在物理层部分的位置如图13所示，位于物理部分中SIGNAL后。
本申请实施例中，第二指示信息在第一PPDU帧的物理层部分的位置并不唯一。第一PPDU帧的物理层部分包含的其他字段也不做限定。
在一些实施例中，所述第一PPDU帧携带的信息不同，则对应的所述第二指示信息不同。
本申请实施例中，对于需要接收的第一PPDU帧，不同类型的第一PPDU帧对应的第二指示信息不同。其中，不同类型的第一PPDU帧携带的信息不同。
在一示例中，第一PPDU帧为Beacon帧，承载流量指示图(Traffic Indication Map，TIM)的Beacon帧和承载(Delivery Traffic Indication Map，DTIM)的Beacon帧对应的第二指示信息不同：
承载TIM的Beacon帧对应的第二指示信息为信息A，承载DTIM的Beacon帧对应的第二指示信息为信息B，当零功耗STA接收到的第二指示信息信息为信息A，则确定AP指示零功耗STA不接收Beacon帧，且该Beacon帧为承载TIM的Beacon帧。当零功耗STA接收到的第二指示信息信息为信息B，则确定AP指示零功耗STA接收Beacon帧，且该Beacon帧为承载DTIM的Beacon帧。
可理解的，TIM是一个基于bitmap结构的流量指示图，用以标识AP的缓存信息。零功耗STA根据TIM能够查看AP的缓存信息中是否包括该零功耗STA的缓存。DTIM除了指示缓存的单播信息，也同时指示AP缓存的组播信息。承载DTIM的Beacon帧的周期是TBTT的若干倍，即每发一定数量的Beacon帧中就有一个Beacon帧承载DTIM，其他Beacon帧承载TIM。因此，DTIM的周期包含整数个Beacon interval。AP发送的DTIM，零功耗STA必须处于醒来状态接收广播与组播信息，以及单播信息，而AP发送的承载TIM的Beacon帧，零功耗STA不一定需要醒来接收单播信息，取决于监听间隔。
对于第三指示信息，AP通过第三指示信息向零功耗STA指示第一PPDU帧的接收端，零功耗STA根据第三指示信息确定第一PPDU帧是否为当前零功耗STA需要接收的第一PPDU帧。其中，当第一PPDU帧的接收端为当前零功耗STA，则确定第一PPDU帧对于零功耗STA来说为需要接收的目标接收帧。
在一些实施例中，所述第三指示信息指示所述接收端为所述零功耗STA的情况下，所述第三指示信息用于指示所述零功耗STA接收所述第一PPDU帧的数据部分。
若第三指示信息指示所述第一PPDU帧的接收端为所述零功耗STA，则对于该零功耗STA来说，第一PPDU帧为该零功耗STA接收的目标PPDU帧，则零功耗STA被AP指示接收所述第一PPDU帧的数据部分。若第三指示信息指示所述第一PPDU帧的接收端不是所述零功耗STA，则对于该零功耗STA来说，第一PPDU帧不是该零功耗STA接收的目标PPDU帧，则零功耗STA被AP指示不接收所述第一PPDU帧的数据部分。
在一示例中，对于零功耗STA：STA1，STA1接收到第一PPDU帧对应的第三指示信息指示的接收端为STA2，则AP指示STA1不接收该第一PPDU帧。对于对于零功耗STA：STA2，STA2接收到第一PPDU帧对应的第三指示信息指示的接收端为STA2，则AP指示STA2接收该第一PPDU帧。
在一些实施例中，所述第三指示信息为关联标识(Association Identifier，AID)或组AID。
这里，一个AP可关联N个AID，一个零功耗STA关联一个AID或多个零功耗STA关联一个AID，这里，将多个零功耗STA关联的AID称为组AID。
本申请实施例中，第三指示信息与第一PPDU帧的关系包括以下之一：
关系C1、所述第三指示信息独立于所述第一PPDU帧。
关系C2、所述第三指示信息承载在所述第一PPDU帧上。
在关系C1中，第三指示信息独立于第一PPDU帧，第三指示信息可与第一PPDU帧同时从AP发送至零功耗STA，也可分开从AP发送至零功耗STA。
零功耗STA接收到第三指示信息后，基于第三指示信息确定第一PPDU帧的帧接收端为当前零功耗STA，则第一指示信息指示零功耗STA接收第一PPDU帧，即指示接收第一PPDU帧的物理部分和数据部分。
在第三指示信息独立于第一PPDU帧的情况下，第三指示信息可位于第一PPDU帧之前的任一PPDU帧上。
在关系C2中，第三指示信息承载在第一PPDU帧上。
零功耗STA接收第一PPDU帧，并对接收的第一PPDU帧进行解析，得到第三指示信息，且第三指示信息指示当前零功耗STA的情况下，零功耗STA确定被AP指示接收第一PPDU帧的数据部分。
在一示例中，第三指示信息承载在第一PPDU帧的MAC头中，零功耗STA接收到第一PPDU帧的数据部分的MAC头，零功耗STA需要接收数据部分并进行解码和校验，来确定第三指示信息。若第三指示信息指示的接收端为当前零功耗STA，则零功耗STA继续接收第一PPDU帧的数据部分的其他数据。
在一些实施例中，所述第三指示信息承载在所述第一PPDU帧的物理层部分。
AP在发送第一PPDU帧时，可以在第一PPDU帧的物理层部分承载第三指示信息。零功耗STA检测到第一PPDU帧的物理层部分，则确定第一PPDU帧是否为目标接收帧。若第一PPDU帧为目标接收帧，则确定被AP指示接收第一PPDU帧的数据部分。若第一PPDU帧不是目标接收帧，则确定被AP指示不接收第一PPDU帧的数据部分。
第三指示信息可承载在第一PPDU帧的物理层前导或物理层头部，也可承载在物理层部分的其他位置。
在一示例中，在第一PPDU帧的物理层前导增加第三指示信息。零功耗STA检测到PPDU帧的物理层前导，进而根据第三指示信息的检测，就可以确定第一PPDU帧是否为目标接收帧。
在一示例中，在第一PPDU帧的物理层头部增加第三指示信息。零功耗STA检测到PPDU帧的物理层头，进而根据第三指示信息的检测，就可以确定第一PPDU帧是否为目标接收帧。
在一示例中，第三指示信息在物理层部分的位置如图14所示，位于物理部分中LTF与SIGNAL之间。
本申请实施例中，第三指示信息在第一PPDU帧的物理层部分的位置并不唯一。第一PPDU帧的物理层部分包含的其他字段也不做限定。
本申请实施例提供的无线通信方法如图15所示，应用于零功耗STA，包括：
S1501、零功耗STA接收AP发送的第二信息，所述第二信息用于指示第一窗口的到达。
本申请实施例中，AP基于本地时钟确定第一窗口达到，则向零功耗STA发送第二信息，第二信息用于指示第一窗口的达到，第一窗口为应用于零功耗STA的窗口。零功耗STA接收到第二信息后，根据第二信息确定第一窗口的到达，并根据第二信息指示的触发第一窗口。
可选地，若第一窗口到达，则零功耗STA执行第一窗口对应的动作。
零功耗STA可在第一窗口达到后进行数据的交换，也可在第一窗口达到后访问信道，从而确定能否介入信道进行数据的传输。
可理解的，零功耗STA基于AP发送的第二信息触发第一窗口，从而基于触发的第一窗口进行数据的接收或发送。
本申请实施例中，AP通过第二信息向零功耗STA指示第一窗口的到达，零功耗STA通过从AP接收的第二信息确定第一窗口的到达，不需要零功耗STA通过本地的时钟来判断是否达到第一窗口，从而满足零功耗STA无法维持与AP的精准的时间同步的场景。
本申请实施例中，零功耗STA可支持图9所示的无线通信方法和图15所示的无线通信方法，图9所示的无线通信方法和图15所示的无线通信方法可单独实施，也可一起实施。
本申请实施例提供的无线通信方法如图16所示，应用于AP，包括：
S1601、AP向零功耗STA发送第二信息，所述第二信息用于指示第一窗口的到达。
本申请实施例中，AP基于本地时钟确定第一窗口达到，则向零功耗STA发送第二信息，第二 信息用于指示第一窗口的达到，第一窗口为应用于零功耗STA的窗口。零功耗STA接收到第二信息后，根据第二信息确定第一窗口的到达，并根据第二信息指示的触发第一窗口。
本申请实施例中，AP通过第二信息向零功耗STA指示第一窗口的到达，零功耗STA通过从AP接收的第二信息确定第一窗口的到达，不需要零功耗STA通过本地的时钟来判断是否达到第一窗口，从而满足零功耗STA无法维持与AP的精准的时间同步的场景。
本申请实施例中，AP可支持图10所示的无线通信方法和图16所示的无线通信方法，图10所示的无线通信方法和图16所示的无线通信方法可单独实施，也可一起实施。
本申请实施例提供的无线通信方法如图17所示，应用于包括AP和零功耗STA的通信系统，包括：
S1701、AP向零功耗STA发送第二信息。
S1702、零功耗STA根据接收的第二信息触发第一窗口。
下面，对本申请实施例提供的无线通信方法中的第二信息进行说明。
在一些实施例中，所述第二信息用于指示第二时间信息，所述第二时间信息对应所述第一窗口。
第二时间信息可为第六时刻或第四时长。
若第一时间信息为第六时刻，则第一窗口的到达时间为第六时刻或第七时刻，第七时刻为第六时刻加上第五时长得到的时刻。
若第一时间信息为第四时长，则第一窗口的到达时间为第八时刻，第八时刻为距离接收到第二信息的时间间隔第四时长后的时刻。
在一些实施例中，所述第二信息用于指示触发信息，所述触发信息用于触发所述第一窗口。
零功耗STA接收到触发信息后，可在接收到触发信息的时刻触发第一窗口，或在第六时长后触发第一窗口。
在一些实施例中，所述第二信息承载在第二PPDU帧上。
AP将第二信息承载在第二PPDU帧上发送至零功耗STA，零功耗STA基于接收到的第二PPDU帧确定第二信息，并基于第二信息触发第一窗口。
可选地，第二PPDU帧为Beacon帧。
本申请实施例中，零功耗STA在需要接收Beacon帧时进入唤醒状态，在唤醒状态下接收Beacon帧，当接收的Beacon帧承载第二信息，则基于第二信息确定第一窗口的到达时间。可理解的，零功耗STA可在接收Beacon帧后进入休眠状态，并正在第一窗口的达到时间进入唤醒状态，在唤醒状态下触发第一窗口；也可在接收Beacon帧后保持唤醒状态，并在第一窗口的达到时间触发第一窗口。
在一些实施例中，所述第二PPDU帧为空数据PPDU帧即空数据包(Null Data Packet，NDP)PPDU帧。
NDP PPDU帧不承载数据，用于测量或者承载控制信息。NDP PPDU帧的帧结构就是包括物理层preamble和物理层头部，没有MAC帧的头部和MAC层服务数据单元(MAC Server Data Unit，MSDU)。在一示例中，承载MAC控制信息的非数据(Null Data Packet Carrying Medium Access Control information，NDP CMAC)PPDU帧只包括物理层preamble和物理层header，如图18所示，NDP CMAC PPDU帧包括以下字段：STF、LTF1和SIGNAL。
本申请实施例中，第二信息可承载在NDP所包括的SIGNAL中。
SIGNAL字段的结构如图19所示，包括：NDP CMAC PPDU帧body、NDP指示(indication)、CRC和尾比特(Tail)。NDP CMAC PPDU帧body包括了NDP CMAC PPDU帧Type信息和相关的控制信息。例如，NDP CMAC PPDU帧Type指示高NDP为CTS，则该NDP承载的控制信息为CTS信息。
可选地，第二信息可承载在NDP CMAC PPDU帧body的NDP CMAC PPDU帧Type中。
可选地，所述第一窗口为目标唤醒时间TWT周期。
本申请实施例中，当TWT周期为两次TWT时间之间的间隔，当TWT周期到达，则TWT时间达到，零功耗STA在TWT时间到达后进入唤醒状态，并进行数据的交换，并在完成数据的交换后，进入睡眠状态，直到当前TWT周期结束，到达下一TWT周期。
在一示例中，如图20所示，在时间2001TWT周期到达，则TWT时间在时间2001到达，零功耗STA在时间2001进入唤醒状态，并进行数据的交换，并在时间2002完成数据的交换后，进入睡眠状态，直到在时间2003下一个TWT时间周期达到。零功耗STA在时间2003再次进入唤 醒状态，并进行数据的交换，直到时间2004。
若第一窗口为TWT周期，第二信息可指示TWT周期的以下信息至少之一：TWT周期的起始时间、TWT时间的结束时间和TWT周期的时长。
可选地，所述第一窗口为所述零功耗STA对应的第一限制接入窗口(Restricted access window，RAW)。
信道被分为不同的时间间隔，每个时间间隔对应于一个RAW，被分配给一个RAW分组，每个RAW分组包括一定数量的STA。对于零功耗STA，当零功耗STA对应的第一RAW达到，则零功耗STA开始访问信道。可理解的，第一RAW所对应的RAW分组包括该零功耗STA。
若第一窗口为第一RAW，第二信息可指示第一RAW的以下信息至少之一：第一RAW的起始时间、第一RAW的结束时间和第一RAW的时长。
在一些实施例中，第二PPDU帧位于所述第一RAW内或所述第一RAW外，所述第二PPDU帧为承载所述第二信息的PPDU帧。
在一些实施例中个，所述第二信息针对所述第一RAW包括的第一时隙，所述第一时隙对应所述第一RAW分组，所述第一RAW分组包括所述零功耗STA。
这里，第一RAW可划分为多个时隙，且各个时隙分别对应不同的RAW分组，第一RAW划分的多个时隙包括第一时隙，且第一时隙对应的RAW分组包括零功耗STA。
第二信息可针对第一RAW所包括的第一时隙，即第二信息指示第一时隙的达到。可理解的，第二信息可针对第一RAW中的一个或多个时隙，且一个或多个时隙中包括第一时隙。
下面，对本申请实施例提供的无线通信方法进行进一步描述。
在wifi的通信过程中，信号的收发基于本地的时钟确定定时，STA的本地时钟也会定期的与AP进行对齐，保证设备之间的定时一致，从而在相应的时间进行数据的发送和接收。
在wifi技术中，信标(Beacon)帧是一个广播的管理帧，用于广播AP的基本信息。其中，Beacon帧中指示的信标间隔(Beacon Interval)字段指示发送Beacon的时间间隔。信标预定传送时间(Target Beacon Transmission Time，TBTT)是一个定时后的发送/接收Beacon动作的周期，其周期的时间就是由Beacon Interval所决定的。当TBTT到达的时候，AP会主动发送Beacon帧，而节点也都会主动接收该Beacon帧(包括休眠模式的节点，也会苏醒过来接收该Beacon，然后利用Beacon帧进行时间同步，并且查看业务指示消息(traffic indication message，TIM字段，若没有自己的数据缓存，那么节点继续转为休眠模式，直到下一个TBTT到来。其中，每一个Beacon的帧中都有一个TIM信息，它主要用来由AP通告它管辖下的哪个STA有信息现在缓存在AP中。
Beacon帧是按照TBTT时间进行周期性发送的。监听间隔(Listen Interval)，是指STA两次苏醒之间，历经多少次TBTT，也就是跳过了多少个Beacon帧。越长的监听间隔，STA休眠的时间就越长，从而越节能，但是会耗费AP的缓存区空间，也增加了接入时延。
Beacon帧中包括的时间戳(Timestamp)字段包括64比特，用来同步BSS中的STA。BSS中的AP会通过Beacon帧定期发送AP的时钟信息。STA收到该Timestamp，同步自己的本地时钟，与AP保持一致。AP通过Timestamp字段将自己的定时同步功能(timing synchronization function，TSF)定时器(timer)发送给BSS中的STA。STA本地维护一个264长度的TSF timer，时间长度单位为微妙。当STA获得Timestamp信息后，如果本地的TSF timer与收到的Timestamp不一致，则更新自己的TSF timer为收到的Timestamp的取值。
以上为目前wifi系统中保持AP和STA间时间同步的方法。STA可以以一定的精度维持本地的TSF timer，并通过Beacon帧可以周期性的与AP进行定时的对齐。STA可以根据本地的TSF timer决定PPDU帧的接收和发送的时间。对于零功耗STA，其本地的定时的精度较差，即使通过Beacon帧周期性的为零功耗STA提供定时，在Beacon帧的传输间隔内，零功耗STA也无法维持准确的TSF timer，以实现信息发送和接收。
本申请实施例提供的无线通信方法能够包括但不限于以下实施例。
实施例1、在PPDU帧的物理层部分指示PPDU帧是否为目标接收帧
对于一些管理帧的接收，如Beacon帧，零功耗STA需要在TBTT或者监听间隔醒来进行接收以获得AP广播的信息。TBTT和监听间隔的到达时间需要STA本地的定时器来计时。零功耗STA并不能维持准确的定时信息。
在现有技术中，PPDU帧承载的帧的类型在PPDU帧的数据部分，也是就MAC层信息部分进行承载。STA需要接收数据部分并进行解码和校验，来确定帧类型。
表1、type和Subtype示例
Type Type描述 Subtype Subtype描述
01 Control 1100 CTS
01 Control 1101 ACK
00 Management 1000 Beacon
10 Data 0000 Data
如当Type＝00，表示该PPDU帧为管理帧，Subtype＝1000，表示该PPDU帧承载Beacon帧。
对于零功耗STA，无法通过准确的定时器确定接收某种帧类型的PPDU帧的时间。本申请实施例中，零功耗STA接收所有PPDU帧，通过PPDU帧的MAC部分信息承载的地址信息、帧类型信息，确定当前收到的帧是否是需要接收的目标PPDU帧。这对零功耗STA的能力和供能提出更高的要求。
如果零功耗STA在PPDU帧的物理层部分就能确定是否为目标接收帧，可以减少零功耗STA对MAC层信息部分的解码，减少对零功耗STA的能力和供能的要求。为此，AP在发送PPDU帧时，可以在PPDU帧的物理层部分承载帧类型和帧子类型信息。例如，在PPDU帧的物理层头部部分增加帧类型/帧子类型信息。零功耗STA检测到PPDU帧的物理层preamble，进而检测帧类型/帧子类型信息，就可以确定是否为目标接收帧。
例如，零功耗STA对Beacon帧的监听，根据检测PPDU帧的物理层部分中的帧类型/帧子类型字段，可以确定是否是AP发送的Beacon帧，从而确定是否接收该PPDU帧的数据部分。具体的，帧类型/帧子类型信息可以是标识Beacon帧的特征序列，用于零功耗STA进行相关接收，确定该PPDU帧为Beacon帧。PPDU帧的物理层头部部分增加帧类型/帧子类型信息字段的帧格式如图21所示，位于数据部分之前。
其中，帧类型/帧子类型信息字段在PPDU帧的物理层部分的位置并不唯一。PPDU帧的物理层部分包含的其他字段也不做限定。
也可以定义不同的物理层preamble，用于标识目标接收帧。例如，区别现有技术的固定的preamble序列，本方法中，可以定义多种preamble序列，零功耗STA对preamble序列进行相关接收，确定preamble序列，从而确定该PPDU帧是否为目标接收帧。例如，承载Beacon帧的PPDU帧的物理层preamble采用preamble1，区别于承载其他类型帧的PPDU帧。
实施例2、在PPDU帧的物理层部分指示定时信息
对于零功耗STA，无法通过准确的定时器确定接收某种帧类型的PPDU帧的时间。为了确定当前收到的帧是否是需要接收的目标PPDU帧的时间，本申请实施例中，在PPDU帧的物理层部分指示定时信息。
该定时信息即第二指示信息相比现有技术的Timestamp指示的信息来说可以是更粗粒度的定时信息。优选的，该定时信息可以指示TBTT或监听间隔的到达时间。因此，该定时信息指示的时间粒度为Beacon Interval，而不需要是微妙。该定时信息可以指示Beacon帧中的Timestamp字段中的部分比特，而不需要是全部64比特。
PPDU帧的物理层头部部分增加定时信息字段的帧格式如图22所示，位于数据部分之前。
定时信息字段在PPDU帧的物理层部分的位置并不唯一。PPDU帧的物理层部分包含的其他字段也不做限定。
定时信息可以指示携带特定的内容的Beacon帧。当STA处于省电模式(PowerSaving Mode，PSM)下，AP将缓存下行数据，只有当STA休眠结束后主动向AP请求，AP才进行下行数据的发送。AP周期性通过Beacon帧向对应的节点广播其缓存区情况，从而节点可以知道是否有自己的数据被AP缓存。在休眠结束后，被缓存数据的节点就会进行数据请求，反之就继续休眠。AP通过Beacon帧携带流量指示图TIM，TIM是一个基于位图(bitmap)结构的流量指示图，用以标识AP的缓存信息。Bitmap中的每个bit对应于一个STA的AID，若该bit为1，那么代表其对应STA有数据缓存，若该bit为0，代表其对应STA没有数据缓存。STA查看自己对应的bit位置是1还是0，从而再决定是否要发送PS-Poll帧请求数据。同时，有些Beacon帧承载的是DTIM，DTIM除了指示缓存的单播信息，也同时指示AP缓存的组播信息。承载DTIM的Beacon帧的周期是TBTT的若干倍，即每发一定数量的Beacon帧中就有一个Beacon帧承载DTIM，其他Beacon帧承载TIM。因此，DTIM的周期包含整数个Beacon interval。AP发送的DTIM，STA必须处于醒来状态接收广播与组播信息，以及单播信息，而AP发送的TIM，STA不一定需要醒来接收单播信息，取决于监听间隔。
如图23所示，一个DTIM间隔包括3个Beacon interval。零功耗STA需要在承载DTIM的Beacon 帧的TBTT醒来一段时间接收广播与组播帧，也包括单播帧。而在承载TIM的Beacon帧的TBTT，可以不醒来，以实现省电。为此，在承载DTIM和TIM的Beacon帧对应的PPDU帧的物理层部分分别承载不同的定时信息，如图23所示，定时信息2和定时信息1，用于指示当前Beacon帧为承载DTIM还是TIM的Beacon帧的TBTT。零功耗STA根据该定时信息确定是否接收Beacon帧的数据部分，以获得相应的信息。如图23所示，零功耗STA检测到定时信息1，不继续接收Beacon帧的数据部分，在接收完Beacon帧后，进入休眠状态；零功耗STA检测到定时信息2，则确定是承载DTIM的Beacon帧，则保持唤醒状态来接收Beacon帧的数据部分和后续的广播与组播帧的缓存数据。
实施例3、PPDU帧的物理层信息部分指示零功耗STA的标识信息
PPDU帧中的MAC头中包含地址字段，用于指示该帧的目的接收用户。同时，在PSM模式下，Beacon帧中的TIM中每个bit对应于一个STA的关联ID(Association Identifier，AID)。AID的范围是从0～2007，一个AP最多可以关联2007个STA。AID＝0的位置为保留字段，并不分配给STA，用以代表所有的组播和广播。当一个STA向AP发起关联请求(Association Request)后，AP会反馈的关联响应帧(Association Response)。AID也是在这个过程中被分配，并告知STA。同时，对于S1G AP，可以为一组S1G STA分配一个group AID。
本申请实施例中，为了使零功耗STA在目标时间接收目标PPDU帧，可以在目标PPDU帧的物理层信息部分指示零功耗STA的标识信息。具体的，标识信息可以是AID，也可以是group AID。零功耗STA在检测到PPDU帧的物理层信息部分中的标识信息后，如果与自己的标识对应，则接收该PPDU帧的数据部分，否则，不接收。
在一示例中，PPDU帧的物理层头部部分增加AID字段的帧格式如图24所示，位于物理部分，且与数据部分相邻。
可理解的，AID字段在PPDU帧的物理层部分的位置并不唯一。PPDU帧的物理层部分包含的其他字段也不做限定。
上述实施例1至3是解决如何指示零功耗STA对在目标时间发送的PPDU帧进行接收。
实施例4、触发帧对应零功耗STA对应的时间窗口
为了实现STA的省电，对于STA的唤醒和数据的接收和发送都有相应的优化。其中，TWT定时唤醒机制用于支持大规模物联网环境下的节能工作。在TWT中，终端和AP之间建立了一张时间表(该时间表是STA和AP协定的)，时间表是由TWT时间周期所组成的。通常STA和AP所协商的TWT时间周期包含一个或者多个Beacon周期。当STA和AP所协商的时间周期到达后，STA会醒来，并等待AP发送的触发帧，并进行一次数据交换。当本次传输完成后，返回睡眠状态。每一个STA和AP都会进行独立的协商，每一个STA都具有单独的TWT时间周期。AP也可以将STA根据设定的TWT时间周期进行分组，一次和多个STA进行连接，从而提高节能效率。
TWT一共有三种工作模式，分别是：1)单独(Individual)TWT，2)广播(Broadcast)TWT，3)机会(Opportunistic)PS。
Individual TWT为AP和STA协商的TWT，该TWT的确定有显式和隐式两种模式：
显式工作模式
在本次数据帧交换中，AP会显式告诉STA，下一轮的TWT周期；STA会在新的指定的TWT周期时苏醒，并再一次和AP进行数据帧交换。
隐式工作模式
在本次数据帧交换中，AP不会告诉STA，下一轮的TWT周期；STA会自己计算出下一轮的TWT周期(通过在当前TWT周期上增加一个特定的时间)。STA会在自己计算的TWT周期时苏醒，并再一次和AP进行数据帧交换。
Broadcast TWT，广播TWT机制是一种由AP负责管理的工作机制。在该机制下，TWT时间周期是由AP宣告，通常AP会在每一个Beacon帧中宣告本轮的TWT时间周期。STA在TWT时间周期到达后进行苏醒，AP会发送广播的触发帧，当AP发送完成后，STA恢复到睡眠状态，直到下一次广播TWT时间到达。
Opportunistic PS：机会PS模式和前面两种工作模式是类似的，但是没有AP和节点的协商过程。AP会在每一个Beacon内，公开宣告一个TWT时间。任意STA可以选择在这个公开TWT时间内进行苏醒，并和AP执行数据帧交换。
无论是哪种TWT模式，以及TWT时间的指示模式，STA都需要本地的定时器计算TWT时间的达到。对于零功耗STA，由于并不能维持准确的定时信息，在确定TWT到达时，需要借助AP的 触发。
本申请实施例中，一方面，通过AP发送的触发信息指示TWT时间。可以定义一个触发帧，携带触发信息，指示目标TWT时间。如图25所示，在TWT到达时，AP发送一个触发帧(trigger)，用于给零功耗STA指示TWT时间到达。零功耗STA收到该触发信息后，可以醒来进行数据帧的交换。与AP发送的用于触发STA在TWT进行数据交换的触发帧不同，本申请实施例中的触发信息用于指示TWT时间的到达。
在一示例中，可以使用NDP帧作为触发帧。
NDP帧的主要用处是测量或者承载控制信息，而不承载数据。NDP帧的帧结构就是主要包括物理层preamble和物理层头部，没有MAC帧的头部和MSDU。在一示例中，NDP帧的结构如图18所示。NDP帧的Signal字段的结构如图19所示，其中，NDP CMAC PPDU帧body部分包括了NDP CMAC PPDU帧Type信息和相关的控制信息。例如，NDP CMAC PPDU帧Type指示高NDP为CTS，则该NDP承载的控制信息为CTS信息。
本申请实施例中，为了通过NDP承载指示TWT时间的触发信息，可以定义一种新的NDP CMAC PPDU帧Type，相应的，该NDP承载的控制信息为指示TWT时间的触发信息。
本申请实施例中，WiFi是支持大量节点场景，为了降低冲突概率，引入RAW。通过RAW对STA进行分组，通过仅允许特定时间内特定节点访问信道来减少信道竞争。RAW工作机制描述如图26所示，信道时间被分为不同的时间间隔，每个间隔被分配给一个RAW分组，每个RAW分组包含一定数目的节点。带有RAW参数信息的信标RPS规定了每个分组所包含的节点数、起始时间及时长。如图26所示，RAWA、RAWB、RAWC为不同的RAW，且对应不同的RAW分组。每个RAW还可被进一步均匀划分为多个时隙(slot)，因此，RPS还包含时隙数量、时隙格式和时隙持续时间计数器等。将STA划分多个RAW组，并为每个RAW组分配一个时隙，属于同一个时隙中的节点竞争接入信道，在一定程度上减少了节点间的碰撞。如图26所示，RAWB被均匀划分为时隙1至时隙N这N个时隙。
本申请实施例中，触发信息用于指示RAW时间的到达。其中，如图27和图28所示，承载触发信息的触发帧可以在RAW内，也可以在RAW外。
本申请实施例中，触发帧还可以是针对RAW的时隙即RAW时隙的，如每个触发帧对于一个或者多个RAW时隙，如图29所示，对于时隙1至时隙N，每个触发帧对应一个RAW时隙。
触发信息针对RAW的触发帧的发送位置，除了对应RAW的起始时间，还可以对应RAW的结束时间，用于指示给零功耗STA其RAW的结束时间。
需要说明的是，实施例1至3为了说明零功耗STA获得目标PPDU帧的接收时间，以Beacon的接收为例。实施例4为了说明零功耗STA获得目标时间间隔的时间，以TWT和RAW为例。实际上，其他类型的需要STA根据定时信息确定时间的PPDU帧和窗口(时间间隔)，都可以采用本申请实施例提供的无线通信方法。
零功耗STA无法获得精确时钟，影响对数据的收发。本申请实施例提供的无线通信方法，通过AP发送的信息，可以辅助零功耗STA获得目标接收PPDU帧，或目标时间间隔，用于正确的接收和发送数据，同时实现零功耗STA低复杂度和低功耗。
以上结合附图详细描述了本申请的优选实施方式，但是，本申请并不限于上述实施方式中的具体细节，在本申请的技术构思范围内，可以对本申请的技术方案进行多种简单变型，这些简单变型均属于本申请的保护范围。例如，在上述具体实施方式中所描述的各个具体技术特征，在不矛盾的情况下，可以通过任何合适的方式进行组合，为了避免不必要的重复，本申请对各种可能的组合方式不再另行说明。又例如，本申请的各种不同的实施方式之间也可以进行任意组合，只要其不违背本申请的思想，其同样应当视为本申请所公开的内容。又例如，在不冲突的前提下，本申请描述的各个实施例和/或各个实施例中的技术特征可以和现有技术任意的相互组合，组合之后得到的技术方案也应落入本申请的保护范围。
还应理解，在本申请的各种方法实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。此外，在本申请实施例中，术语“下行”、“上行”和“侧行”用于表示信号或数据的传输方向，其中，“下行”用于表示信号或数据的传输方向为从站点发送至小区的用户设备的第一方向，“上行”用于表示信号或数据的传输方向为从小区的用户设备发送至站点的第二方向，“侧行”用于表示信号或数据的传输方向为从用户设备1发送至用户设备2的第三方向。例如，“下行信号”表示该信号的 传输方向为第一方向。另外，本申请实施例中，术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系。具体地，A和/或B可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
图30是本申请实施例提供的无线通信装置的结构组成示意图，应用于零功耗STA，如图30所示，所述无线通信装置3000包括：
第一通信单元3001，配置为被接入点AP指示是否接收第一物理层数据协议单元PPDU帧的数据部分。
在一些实施例中，第一通信单元3001，还配置为接收所述AP发送的第一信息，所述第一信息用于指示所述零功耗STA是否接收所述第一PPDU帧；或者，所述第一信息用于指示所述零功耗STA是否接收所述第一PPDU帧的数据部分。
在一些实施例中，所述第一信息包括以下至少之一，包括：
第一指示信息，所述第一指示信息用于指示所述第一PPDU帧的帧类型；
第二指示信息，所述第二指示信息用于指示第一时间信息，所述第一时间信息对应接收所述第一PPDU帧的时间；
第三指示信息，所述第三指示信息用于指示所述第一PPDU帧的接收端。
在一些实施例中，所述第一指示信息指示所述第一PPDU帧的帧类型为目标帧类型的情况下，所述第一指示信息用于指示所述零功耗STA接收所述第一PPDU帧的数据部分。
在一些实施例中，所述第一指示信息包括以下之一：类型信息或子类型信息。
在一些实施例中，所述第一指示信息为第一特征序列，所述第一特征序列为标识所述第一PPDU帧的帧类型的特征序列。
在一些实施例中，所述第一指示信息为第一物理前导，所述第一物理前导为标识所述第一PPDU帧的帧类型的物理层前导。
在一些实施例中，所述第一指示信息独立于所述第一PPDU帧。
在一些实施例中，所述第一指示信息承载在所述第一PPDU帧上。
在一些实施例中，所述第一指示信息承载在所述第一PPDU帧的物理层部分。
在一些实施例中，所述第二指示信息用于指示所述零功耗STA接收所述第一PPDU帧的数据部分。
在一些实施例中，所述第一时间信息对应对应第一传送时间或第一时间间隔；所述第一传送时间为所述AP周期性发送所述第一PPDU帧的发送时间，所述第一时间间隔为所述零功耗STA两次唤醒状态之间的休眠状态的时长。
在一些实施例中，所述第一时间信息的时间粒度为第二时间间隔，所述第二时间间隔为所述AP发送所述第一PPDU帧的发送间隔。
在一些实施例中，所述第二指示信息独立于所述第一PPDU帧。
在一些实施例中，所述第二指示信息承载在所述第一PPDU帧上。
在一些实施例中，所述第二指示信息承载在所述第一PPDU帧的物理层部分中。
在一些实施例中，所述第一PPDU帧携带的信息不同，则对应的所述第二指示信息不同。
在一些实施例中，所述第三指示信息指示所述接收端为所述零功耗STA的情况下，所述第三指示信息用于指示所述零功耗STA接收所述第一PPDU帧的数据部分。
在一些实施例中，所述第三指示信息为关联标识AID或组AID。
在一些实施例中，所述第三指示信息独立于所述第一PPDU帧。
在一些实施例中，所述第三指示信息承载在所述第一PPDU帧上。
在一些实施例中，所述第三指示信息承载在所述第一PPDU帧的物理层部分中。
在一些实施例中，装置3000，还包括：
第三通信单元，配置为接收所述AP发送的第二信息，所述第二信息用于指示第一窗口的到达。
在一些实施例中，所述第二信息用于指示第二时间信息，所述第二时间信息对应所述第一窗口。
在一些实施例中，所述第二信息用于指示触发信息，所述触发信息用于触发所述第一窗口。
在一些实施例中，所述第二信息承载在第二PPDU帧上。
在一些实施例中，所述第二PPDU帧为空数据PPDU帧。
在一些实施例中，所述第一窗口为目标唤醒时间TWT周期。
在一些实施例中，所述第一窗口为所述零功耗STA对应的第一限制接入窗口RAW。
在一些实施例中，第二PPDU帧位于所述第一RAW内或所述第一RAW外，所述第二PPDU帧 为承载所述第二信息的PPDU帧。
在一些实施例中，所述第二信息针对所述第一RAW包括的第一时隙，所述第一时隙对应所述第一RAW分组，所述第一RAW分组包括所述零功耗STA。
图31是本申请实施例提供的无线通信装置的结构组成示意图，应用于AP，如图31所示，所述无线通信装置3100包括：
第二通信单元3101，配置为指示零功耗STA是否接收第一物理层数据协议单元PPDU帧的数据部分。
在一些实施例中，第二通信单元3101，还配置为向所述零功耗STAAP发送第一信息，所述第一信息用于指示所述零功耗STA是否接收所述第一PPDU帧；或者，所述第一信息用于指示所述零功耗STA是否接收所述第一PPDU帧的数据部分。
在一些实施例中，所述第一信息包括以下至少之一，包括：
第一指示信息，所述第一指示信息用于指示所述第一PPDU帧的帧类型；
第二指示信息，所述第二指示信息用于指示第一时间信息，所述第一时间信息对应接收所述第一PPDU帧的时间；
第三指示信息，所述第三指示信息用于指示所述第一PPDU帧的接收端。
在一些实施例中，所述第一指示信息指示所述第一PPDU帧的帧类型为目标帧类型的情况下，所述第一指示信息用于指示所述零功耗STA接收所述第一PPDU帧的数据部分。
在一些实施例中，所述第一指示信息包括以下之一：类型信息或子类型信息。
在一些实施例中，所述第一指示信息为第一特征序列，所述第一特征序列为标识所述第一PPDU帧的帧类型的特征序列。
在一些实施例中，所述第一指示信息为第一物理前导，所述第一物理前导为标识所述第一PPDU帧的帧类型的物理层前导。
在一些实施例中，所述第一指示信息独立于所述第一PPDU帧。
在一些实施例中，所述第一指示信息承载在所述第一PPDU帧上。
在一些实施例中，所述第一指示信息承载在所述第一PPDU帧的物理层部分。
在一些实施例中，所述第二指示信息用于指示所述零功耗STA接收所述第一PPDU帧的数据部分。
在一些实施例中，所述第一时间信息对应对应第一传送时间或第一时间间隔；所述第一传送时间为所述AP周期性发送所述第一PPDU帧的发送时间，所述第一时间间隔为所述零功耗STA两次唤醒状态之间的休眠状态的时长。
在一些实施例中，所述第一时间信息的时间粒度为第二时间间隔，所述第二时间间隔为所述AP发送所述第一PPDU帧的发送间隔。
在一些实施例中，所述第二指示信息独立于所述第一PPDU帧。
在一些实施例中，所述第二指示信息承载在所述第一PPDU帧上。
在一些实施例中，所述第二指示信息承载在所述第一PPDU帧的物理层部分中。
在一些实施例中，所述第一PPDU帧携带的信息不同，则对应的所述第二指示信息不同。
在一些实施例中，所述第三指示信息指示所述接收端为所述零功耗STA的情况下，所述第三指示信息用于指示所述零功耗STA接收所述第一PPDU帧的数据部分。
在一些实施例中，所述第三指示信息为关联标识AID或组AID。
在一些实施例中，所述第三指示信息独立于所述第一PPDU帧。
在一些实施例中，所述第三指示信息承载在所述第一PPDU帧上。
在一些实施例中，所述第三指示信息承载在所述第一PPDU帧的物理层部分中。
在一些实施例中，装置3100，还包括：
第四通信单元，配置为向所述AP发送第二信息，所述第二信息用于指示第一窗口的到达。
在一些实施例中，所述第二信息用于指示第二时间信息，所述第二时间信息对应所述第一窗口。
在一些实施例中，所述第二信息用于指示触发信息，所述触发信息用于触发所述第一窗口。
在一些实施例中，所述第二信息承载在第二PPDU帧上。
在一些实施例中，所述第二PPDU帧为空数据PPDU帧。
在一些实施例中，所述第一窗口为目标唤醒时间TWT周期。
在一些实施例中，所述第一窗口为所述零功耗STA对应的第一限制接入窗口RAW。
在一些实施例中，第二PPDU帧位于所述第一RAW内或所述第一RAW外，所述第二PPDU帧为承载所述第二信息的PPDU帧。
在一些实施例中，所述第二信息针对所述第一RAW包括的第一时隙，所述第一时隙对应所述第一RAW分组，所述第一RAW分组包括所述零功耗STA。
图32是本申请实施例提供的无线通信装置的结构组成示意图，应用于零功耗STA，如图32所示，所述无线通信装置3200包括：
第三通信单元3201，配置为接收接入点AP发送的第二信息，所述第二信息用于指示第一窗口的到达。
在一些实施例中，所述第二信息用于指示第二时间信息，所述第二时间信息对应所述第一窗口。
在一些实施例中，所述第二信息用于指示触发信息，所述触发信息用于触发所述第一窗口。
在一些实施例中，所述第二信息承载在第二PPDU帧上。
在一些实施例中，所述第二PPDU帧为空数据PPDU帧。
在一些实施例中，所述第一窗口为目标唤醒时间TWT周期。
在一些实施例中，所述第一窗口为所述零功耗STA对应的第一限制接入窗口RAW。
在一些实施例中，第二PPDU帧位于所述第一RAW内或所述第一RAW外，所述第二PPDU帧为承载所述第二信息的PPDU帧。
在一些实施例中，所述第二信息针对所述第一RAW包括的第一时隙，所述第一时隙对应所述第一RAW分组，所述第一RAW分组包括所述零功耗STA。
在一些实施例中，装置3200，还包括：
第一通信单元，配置为被所述AP指示是否接收第一物理层数据协议单元PPDU帧的数据部分。
在一些实施例中，所述第一通信单元，还配置为接收所述AP发送的第一信息，所述第一信息用于指示所述零功耗STA是否接收所述第一PPDU帧；或者，所述第一信息用于指示所述零功耗STA是否接收所述第一PPDU帧的数据部分。
在一些实施例中，所述第一信息包括以下至少之一，包括：
第一指示信息，所述第一指示信息用于指示所述第一PPDU帧的帧类型；
第二指示信息，所述第二指示信息用于指示第一时间信息，所述第一时间信息对应接收所述第一PPDU帧的时间；
第三指示信息，所述第三指示信息用于指示所述第一PPDU帧的接收端。
在一些实施例中，所述第一指示信息指示所述第一PPDU帧的帧类型为目标帧类型的情况下，所述第一指示信息用于指示所述零功耗STA接收所述第一PPDU帧的数据部分。
在一些实施例中，所述第一指示信息包括以下之一：类型信息或子类型信息。
在一些实施例中，所述第一指示信息为第一特征序列，所述第一特征序列为标识所述第一PPDU帧的帧类型的特征序列。
在一些实施例中，所述第一指示信息为第一物理前导，所述第一物理前导为标识所述第一PPDU帧的帧类型的物理层前导。
在一些实施例中，所述第一指示信息独立于所述第一PPDU帧。
在一些实施例中，所述第一指示信息承载在所述第一PPDU帧上。
在一些实施例中，所述第一指示信息承载在所述第一PPDU帧的物理层部分。
在一些实施例中，所述第二指示信息用于指示所述零功耗STA接收所述第一PPDU帧的数据部分。
在一些实施例中，所述第一时间信息对应对应第一传送时间或第一时间间隔；所述第一传送时间为所述AP周期性发送所述第一PPDU帧的发送时间，所述第一时间间隔为所述零功耗STA两次唤醒状态之间的休眠状态的时长。
在一些实施例中，所述第一时间信息的时间粒度为第二时间间隔，所述第二时间间隔为所述AP发送所述第一PPDU帧的发送间隔。
在一些实施例中，所述第二指示信息独立于所述第一PPDU帧。
在一些实施例中，所述第二指示信息承载在所述第一PPDU帧上。
在一些实施例中，所述第二指示信息承载在所述第一PPDU帧的物理层部分中。
在一些实施例中，所述第一PPDU帧携带的信息不同，则对应的所述第二指示信息不同。
在一些实施例中，所述第三指示信息指示所述接收端为所述零功耗STA的情况下，所述第三指 示信息用于指示所述零功耗STA接收所述第一PPDU帧的数据部分。
在一些实施例中，所述第三指示信息为关联标识AID或组AID。
在一些实施例中，所述第三指示信息独立于所述第一PPDU帧。
在一些实施例中，所述第三指示信息承载在所述第一PPDU帧上。
在一些实施例中，所述第三指示信息承载在所述第一PPDU帧的物理层部分中。
图33是本申请实施例提供的无线通信装置的结构组成示意图，应用于AP，如图33所示，所述无线通信装置3300包括：
第四通信单元3301，配置为向接入点AP发送第二信息，所述第二信息用于指示第一窗口的到达。
在一些实施例中，所述第二信息用于指示第二时间信息，所述第二时间信息对应所述第一窗口。
在一些实施例中，所述第二信息用于指示触发信息，所述触发信息用于触发所述第一窗口。
在一些实施例中，所述第二信息承载在第二PPDU帧上。
在一些实施例中，所述第二PPDU帧为空数据PPDU帧。
在一些实施例中，所述第一窗口为目标唤醒时间TWT周期。
在一些实施例中，所述第一窗口为所述零功耗STA对应的第一限制接入窗口RAW。
在一些实施例中，第二PPDU帧位于所述第一RAW内或所述第一RAW外，所述第二PPDU帧为承载所述第二信息的PPDU帧。
在一些实施例中，所述第二信息针对所述第一RAW包括的第一时隙，所述第一时隙对应所述第一RAW分组，所述第一RAW分组包括所述零功耗STA。
在一些实施例中，装置3300，还包括：
第二通信单元，配置为指示所述零功耗STA是否接收第一物理层数据协议单元PPDU帧的数据部分。
在一些实施例中，所述第二通信单元，还配置为向所述零功耗STAAP发送第一信息，所述第一信息用于指示所述零功耗STA是否接收所述第一PPDU帧；或者，所述第一信息用于指示所述零功耗STA是否接收所述第一PPDU帧的数据部分。
在一些实施例中，所述第一信息包括以下至少之一，包括：
第一指示信息，所述第一指示信息用于指示所述第一PPDU帧的帧类型；
第二指示信息，所述第二指示信息用于指示第一时间信息，所述第一时间信息对应接收所述第一PPDU帧的时间；
第三指示信息，所述第三指示信息用于指示所述第一PPDU帧的接收端。
在一些实施例中，所述第一指示信息指示所述第一PPDU帧的帧类型为目标帧类型的情况下，所述第一指示信息用于指示所述零功耗STA接收所述第一PPDU帧的数据部分。
在一些实施例中，所述第一指示信息包括以下之一：类型信息或子类型信息。
在一些实施例中，所述第一指示信息为第一特征序列，所述第一特征序列为标识所述第一PPDU帧的帧类型的特征序列。
在一些实施例中，所述第一指示信息为第一物理前导，所述第一物理前导为标识所述第一PPDU帧的帧类型的物理层前导。
在一些实施例中，所述第一指示信息独立于所述第一PPDU帧。
在一些实施例中，所述第一指示信息承载在所述第一PPDU帧上。
在一些实施例中，所述第一指示信息承载在所述第一PPDU帧的物理层部分。
在一些实施例中，所述第二指示信息用于指示所述零功耗STA接收所述第一PPDU帧的数据部分。
在一些实施例中，所述第一时间信息对应对应第一传送时间或第一时间间隔；所述第一传送时间为所述AP周期性发送所述第一PPDU帧的发送时间，所述第一时间间隔为所述零功耗STA两次唤醒状态之间的休眠状态的时长。
在一些实施例中，所述第一时间信息的时间粒度为第二时间间隔，所述第二时间间隔为所述AP发送所述第一PPDU帧的发送间隔。
在一些实施例中，所述第二指示信息独立于所述第一PPDU帧。
在一些实施例中，所述第二指示信息承载在所述第一PPDU帧上。
在一些实施例中，所述第二指示信息承载在所述第一PPDU帧的物理层部分中。
在一些实施例中，所述第一PPDU帧携带的信息不同，则对应的所述第二指示信息不同。
在一些实施例中，所述第三指示信息指示所述接收端为所述零功耗STA的情况下，所述第三指示信息用于指示所述零功耗STA接收所述第一PPDU帧的数据部分。
在一些实施例中，所述第三指示信息为关联标识AID或组AID。
在一些实施例中，所述第三指示信息独立于所述第一PPDU帧。
在一些实施例中，所述第三指示信息承载在所述第一PPDU帧上。
在一些实施例中，所述第三指示信息承载在所述第一PPDU帧的物理层部分中。
本领域技术人员应当理解，本申请实施例的上述无线通信装置的相关描述可以参照本申请实施例的无线通信方法的相关描述进行理解。
图34是本申请实施例提供的一种通信设备3400示意性结构图。该通信设备可以为零功耗STA或AP。图34所示的通信设备3400包括处理器3410，处理器3410可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图34所示，通信设备3400还可以包括存储器3420。其中，处理器3410可以从存储器3420中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器3420可以是独立于处理器3410的一个单独的器件，也可以集成在处理器3410中。
可选地，如图34所示，通信设备3400还可以包括收发器3430，处理器3410可以控制该收发器3430与其他设备进行通信，具体地，可以向其他设备发送信息或数据，或接收其他设备发送的信息或数据。
其中，收发器3430可以包括发射机和接收机。收发器3430还可以进一步包括天线，天线的数量可以为一个或多个。
可选地，该通信设备3400具体可为本申请实施例的AP，并且该通信设备3400可以实现本申请实施例的各个方法中由AP实现的相应流程，为了简洁，在此不再赘述。
可选地，该通信设备3400具体可为本申请实施例的零功耗STA，并且该通信设备3400可以实现本申请实施例的各个方法中由零功耗STA实现的相应流程，为了简洁，在此不再赘述。
图35是本申请实施例的芯片的示意性结构图。图35所示的芯片3500包括处理器3510，处理器3510可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图35所示，芯片3500还可以包括存储器3520。其中，处理器3510可以从存储器3520中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器3520可以是独立于处理器3510的一个单独的器件，也可以集成在处理器3510中。
可选地，该芯片3500还可以包括输入接口3530。其中，处理器3510可以控制该输入接口3530与其他设备或芯片进行通信，具体地，可以获取其他设备或芯片发送的信息或数据。
可选地，该芯片3500还可以包括输出接口3540。其中，处理器3510可以控制该输出接口3540与其他设备或芯片进行通信，具体地，可以向其他设备或芯片输出信息或数据。
可选地，该芯片可应用于本申请实施例中的AP，并且该芯片可以实现本申请实施例的各个方法中由AP实现的相应流程，为了简洁，在此不再赘述。
可选地，该芯片可应用于本申请实施例中的零功耗STA，并且该芯片可以实现本申请实施例的各个方法中由零功耗STA实现的相应流程，为了简洁，在此不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
图36是本申请实施例提供的一种通信系统3600的示意性框图。如图36所示，该通信系统3600包括零功耗STA3610和AP 3620。
其中，该零功耗STA 3610可以用于实现上述方法中由零功耗STA实现的相应的功能，以及该AP 3620可以用于实现上述方法中由AP实现的相应的功能为了简洁，在此不再赘述。
应理解，本申请实施例的处理器可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器 执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
应理解，上述存储器为示例性但不是限制性说明，例如，本申请实施例中的存储器还可以是静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synch link DRAM，SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)等等。也就是说，本申请实施例中的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请实施例还提供了一种计算机可读存储介质，用于存储计算机程序。
可选的，该计算机可读存储介质可应用于本申请实施例中的AP，并且该计算机程序使得计算机执行本申请实施例的各个方法中由AP实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机可读存储介质可应用于本申请实施例中的零功耗STA，并且该计算机程序使得计算机执行本申请实施例的各个方法中由零功耗STA实现的相应流程，为了简洁，在此不再赘述。
本申请实施例还提供了一种计算机程序产品，包括计算机程序指令。
可选的，该计算机程序产品可应用于本申请实施例中的AP，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由AP实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机程序产品可应用于本申请实施例中的零功耗STA，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由零功耗STA实现的相应流程，为了简洁，在此不再赘述。
本申请实施例还提供了一种计算机程序。
可选的，该计算机程序可应用于本申请实施例中的AP，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由AP实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机程序可应用于本申请实施例中的零功耗STA，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由零功耗STA实现的相应流程，为了简洁，在此不再赘述。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据 实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，)ROM、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应所述以权利要求的保护范围为准。

Claims (133)

  1. 一种无线通信方法，所述方法包括：
    零功耗站点STA被接入点AP指示是否接收第一物理层数据协议单元PPDU帧的数据部分。
  2. 根据权利要求1所述的方法，其中，所述零功耗STA被AP指示是否接收第一PPDU帧的数据部分，包括：
    所述零功耗站点STA接收接入点AP发送的第一信息，所述第一信息用于指示所述零功耗STA是否接收所述第一PPDU帧；或者，所述第一信息用于指示所述零功耗STA是否接收所述第一PPDU帧的数据部分。
  3. 根据权利要求2所述的方法，其中，所述第一信息包括以下至少之一，包括：
    第一指示信息，所述第一指示信息用于指示所述第一PPDU帧的帧类型；
    第二指示信息，所述第二指示信息用于指示第一时间信息，所述第一时间信息对应接收所述第一PPDU帧的时间；
    第三指示信息，所述第三指示信息用于指示所述第一PPDU帧的接收端。
  4. 根据权利要求3所述的方法，其中，所述第一指示信息指示所述第一PPDU帧的帧类型为目标帧类型的情况下，所述第一指示信息用于指示所述零功耗STA接收所述第一PPDU帧的数据部分。
  5. 根据权利要求3或4所述的方法，其中，所述第一指示信息包括以下之一：类型信息或子类型信息。
  6. 根据权利要求3或4所述的方法，其中，所述第一指示信息为第一特征序列，所述第一特征序列为标识所述第一PPDU帧的帧类型的特征序列。
  7. 根据权利要求3或4所述的方法，其中，所述第一指示信息为第一物理前导，所述第一物理前导为标识所述第一PPDU帧的帧类型的物理层前导。
  8. 根据权利要求3至7中任一项所述的方法，其中，所述第一指示信息独立于所述第一PPDU帧。
  9. 根据权利要求3至7中任一项所述的方法，其中，所述第一指示信息承载在所述第一PPDU帧上。
  10. 根据权利要9所述的方法，其中，所述第一指示信息承载在所述第一PPDU帧的物理层部分。
  11. 根据权利要求3所述的方法，其中，所述第二指示信息用于指示所述零功耗STA接收所述第一PPDU帧的数据部分。
  12. 根据权利要求3或11所述的方法，其中，所述第一时间信息对应第一传送时间或第一时间间隔；所述第一传送时间为所述AP周期性发送所述第一PPDU帧的发送时间，所述第一时间间隔为所述零功耗STA两次唤醒状态之间的休眠状态的时长。
  13. 根据权利要求3、11或12所述的方法，其中，所述第一时间信息的时间粒度为第二时间间隔，所述第二时间间隔为所述AP发送所述第一PPDU帧的发送间隔。
  14. 根据权利要求3、11至13中任一项所述的方法，其中，所述第二指示信息独立于所述第一PPDU帧。
  15. 根据权利要求3、11至13中任一项所述的方法，其中，所述第二指示信息承载在所述第一PPDU帧上。
  16. 根据权利要15所述的方法，其中，所述第二指示信息承载在所述第一PPDU帧的物理层部分中。
  17. 根据权利要求3、11至16中任一项所述的方法，其中，所述第一PPDU帧携带的信息不同，则对应的所述第二指示信息不同。
  18. 根据权利要求3所述的方法，其中，所述第三指示信息指示所述接收端为所述零功耗STA的情况下，所述第三指示信息用于指示所述零功耗STA接收所述第一PPDU帧的数据部分。
  19. 根据权利要求3或18所述的方法，其中，所述第三指示信息为关联标识AID或组AID。
  20. 根据权利要求3、18或19所述的方法，其中，所述第三指示信息独立于所述第一PPDU帧。
  21. 根据权利要求3、18或19所述的方法，其中，所述第三指示信息承载在所述第一PPDU帧上。
  22. 根据权利要求21所述的方法，其中，所述第三指示信息承载在所述第一PPDU帧的物理层部分中。
  23. 根据权利要求1至22中任一项所述的方法，其中，所述方法还包括：
    所述零功耗STA接收所述AP发送的第二信息，所述第二信息用于指示第一窗口的到达。
  24. 根据权利要求23所述的方法，其中，所述第二信息用于指示第二时间信息，所述第二时间信息对应所述第一窗口。
  25. 根据权利要求23所述的方法，其中，所述第二信息用于指示触发信息，所述触发信息用于触发所述第一窗口。
  26. 根据权利要求23至25中任一项所述的方法，其中，所述第二信息承载在第二PPDU帧上。
  27. 根据权利要求26所述的方法，其中，所述第二PPDU帧为空数据PPDU帧。
  28. 根据权利要求23至27中任一项所述的方法，其中，所述第一窗口为目标唤醒时间TWT周期。
  29. 根据权利要求23至27中任一项所述的方法，其中，所述第一窗口为所述零功耗STA对应的第一限制接入窗口RAW。
  30. 根据权利要求29所述的方法，其中，第二PPDU帧位于所述第一RAW内或所述第一RAW外，所述第二PPDU帧为承载所述第二信息的PPDU帧。
  31. 根据权利要求29至30中任一项所述的方法，其中，所述第二信息针对所述第一RAW包括的第一时隙，所述第一时隙对应所述第一RAW分组，所述第一RAW分组包括所述零功耗STA。
  32. 一种无线通信方法，所述方法包括：
    接入点AP指示零功耗站点STA是否接收第一物理层数据协议单元PPDU帧的数据部分。
  33. 根据权利要求32所述的方法，其中，所述AP指示零功耗STA是否接收第一PPDU帧的数据部分，包括：
    所述AP向所述零功耗STA发送第一信息，所述第一信息用于指示所述零功耗STA是否接收所述第一PPDU帧；或者，所述第一信息用于指示所述零功耗STA是否接收所述第一PPDU帧的数据部分。
  34. 根据权利要求33所述的方法，其中，所述第一信息包括以下至少之一，包括：
    第一指示信息，所述第一指示信息用于指示所述第一PPDU帧的帧类型；
    第二指示信息，所述第二指示信息用于指示第一时间信息，所述第一时间信息对应接收所述第一PPDU帧的时间；
    第三指示信息，所述第三指示信息用于指示所述第一PPDU帧的接收端。
  35. 根据权利要求34所述的方法，其中，所述第一指示信息指示所述第一PPDU帧的帧类型为目标帧类型的情况下，所述第一指示信息还用于指示所述零功耗STA接收所述第一PPDU帧的数据部分。
  36. 根据权利要求34或35所述的方法，其中，所述第一指示信息包括以下之一：类型信息或子类型信息。
  37. 根据权利要求34或35所述的方法，其中，所述第一指示信息为第一特征序列，所述第一特征序列为标识所述第一PPDU帧的帧类型的特征序列。
  38. 根据权利要求34或35所述的方法，其中，所述第一指示信息为第一物理前导，所述第一物理前导为标识所述第一PPDU帧的帧类型的物理层前导。
  39. 根据权利要求34至38中任一项所述的方法，其中，所述第一指示信息独立于所述第一PPDU帧。
  40. 根据权利要求34至38中任一项所述的方法，其中，所述第一指示信息承载在所述第一PPDU帧上。
  41. 根据权利要40所述的方法，其中，所述第一指示信息承载在所述第一PPDU帧的物理层部分中。
  42. 根据权利要求34所述的方法，其中，所述第二指示信息用于指示所述零功耗STA接收所述第一PPDU帧的数据部分。
  43. 根据权利要求34或42所述的方法，其中，所述第一时间信息对应对应第一传送时间或第一时间间隔；所述第一传送时间为所述AP周期性发送所述第一PPDU帧的发送时间，所述第一时间间隔为所述零功耗STA两次唤醒状态之间的休眠状态的时长。
  44. 根据权利要求34、42或43所述的方法，其中，所述第一时间信息的时间粒度为第二时间间隔，所述第二时间间隔为所述AP发送所述第一PPDU帧的发送间隔。
  45. 根据权利要求34、42至44中任一项所述的方法，其中，所述第二指示信息独立于所述第一PPDU帧。
  46. 根据权利要求34、42至44中任一项所述的方法，其中，所述第二指示信息承载在所述第一PPDU帧上。
  47. 根据权利要46所述的方法，其中，所述第二指示信息承载在所述第一PPDU帧的物理层部分中。
  48. 根据权利要求34、42至47中任一项所述的方法，其中，所述第一PPDU帧携带的信息不同，则对应的所述第二指示信息不同。
  49. 根据权利要求34所述的方法，其中，所述第三指示信息指示所述接收端为所述零功耗STA的情况下，所述第三指示信息用于指示所述零功耗STA接收所述第一PPDU帧的数据部分。
  50. 根据权利要求34或49所述的方法，其中，所述第三指示信息为关联标识AID或组AID。
  51. 根据权利要求34、49或50所述的方法，其中，所述第三指示信息独立于所述第一PPDU帧。
  52. 根据权利要求34、49或50所述的方法，其中，所述第三指示信息承载在所述第一PPDU帧上。
  53. 根据权利要求52所述的方法，其中，所述第三指示信息承载在所述第一PPDU帧的物理层部分中。
  54. 根据权利要求32至53中任一项所述的方法，其中，所述方法还包括：
    所述AP向所述零功耗STA发送第二信息，所述第二信息用于指示第一窗口的到达。
  55. 根据权利要求54所述的方法，其中，所述第二信息用于指示第二时间信息，所述第二时间信息对应所述第一窗口。
  56. 根据权利要求54所述的方法，其中，所述第二信息用于指示触发信息，所述触发信息用于触发所述第一窗口。
  57. 根据权利要求54至56中任一项所述的方法，其中，所述第二信息承载在第二PPDU帧上。
  58. 根据权利要求57所述的方法，其中，所述第二PPDU帧为空数据PPDU帧。
  59. 根据权利要求54至58中任一项所述的方法，其中，所述第一窗口为目标唤醒时间TWT周期。
  60. 根据权利要求54至58中任一项所述的方法，其中，所述第一窗口为所述零功耗STA对应的第一限制接入窗口RAW。
  61. 根据权利要求60所述的方法，其中，第二PPDU帧位于所述第一RAW内或所述第一RAW外，所述第二PPDU帧为承载所述第二信息的PPDU帧。
  62. 根据权利要求60至61中任一项所述的方法，其中，所述第二信息针对所述第一RAW包括的第一时隙，所述第一时隙对应所述第一RAW分组，所述第一RAW分组包括所述零功耗STA。
  63. 一种无线通信方法，所述方法包括：
    零功耗站点STA接收接入点AP发送的第二信息，所述第二信息用于指示第一窗口的到达。
  64. 根据权利要求63所述的方法，其中，所述第二信息用于指示第二时间信息，所述第二时间信息对应所述第一窗口。
  65. 根据权利要求63所述的方法，其中，所述第二信息用于指示触发信息，所述触发信息用于触发所述第一窗口。
  66. 根据权利要求63至65中任一项所述的方法，其中，所述第二信息承载在第二PPDU帧上。
  67. 根据权利要求66所述的方法，其中，所述第二PPDU帧为空数据PPDU帧。
  68. 根据权利要求63至67中任一项所述的方法，其中，所述第一窗口为目标唤醒时间TWT周期。
  69. 根据权利要求63至67中任一项所述的方法，其中，所述第一窗口为所述零功耗STA对应的第一限制接入窗口RAW。
  70. 根据权利要求69所述的方法，其中，第二PPDU帧位于所述第一RAW内或所述第一RAW外，所述第二PPDU帧为承载所述第二信息的PPDU帧。
  71. 根据权利要求69至70中任一项所述的方法，其中，所述第二信息针对所述第一RAW包括的第一时隙，所述第一时隙对应所述第一RAW分组，所述第一RAW分组包括所述零功耗STA。
  72. 根据权利要求63至71中任一项所述的方法，其中，所述方法还包括：
    所述零功耗STA被所述AP指示是否接收第一物理层数据协议单元PPDU帧的数据部分。
  73. 根据权利要求72所述的方法，其中，所述零功耗STA被AP指示是否接收第一PPDU帧的数据部分，包括：
    所述零功耗STA接收所述AP发送的第一信息，所述第一信息用于指示所述零功耗STA是否接收所述第一PPDU帧；或者，所述第一信息用于指示所述零功耗STA是否接收所述第一PPDU帧的数据部分。
  74. 根据权利要求73所述的方法，其中，所述第一信息包括以下至少之一，包括：
    第一指示信息，所述第一指示信息用于指示所述第一PPDU帧的帧类型；
    第二指示信息，所述第二指示信息用于指示第一时间信息，所述第一时间信息对应接收所述第一PPDU帧的时间；
    第三指示信息，所述第三指示信息用于指示所述第一PPDU帧的接收端。
  75. 根据权利要求74所述的方法，其中，所述第一指示信息指示所述第一PPDU帧的帧类型为目标帧类型的情况下，所述第一指示信息用于指示所述零功耗STA接收所述第一PPDU帧的数据部分。
  76. 根据权利要求74或75所述的方法，其中，所述第一指示信息包括以下之一：类型信息或子类型信息。
  77. 根据权利要求74或75所述的方法，其中，所述第一指示信息为第一特征序列，所述第一特征序列为标识所述第一PPDU帧的帧类型的特征序列。
  78. 根据权利要求74或75所述的方法，其中，所述第一指示信息为第一物理前导，所述第一物理前导为标识所述第一PPDU帧的帧类型的物理层前导。
  79. 根据权利要求74至78中任一项所述的方法，其中，所述第一指示信息独立于所述第一PPDU帧。
  80. 根据权利要求74至78中任一项所述的方法，其中，所述第一指示信息承载在所述第一PPDU帧上。
  81. 根据权利要80所述的方法，其中，所述第一指示信息承载在所述第一PPDU帧的物理层部分。
  82. 根据权利要求74所述的方法，其中，所述第二指示信息用于指示所述零功耗STA接收所述第一PPDU帧的数据部分。
  83. 根据权利要求74或82所述的方法，其中，所述第一时间信息对应第一传送时间或第一时间间隔；所述第一传送时间为所述AP周期性发送所述第一PPDU帧的发送时间，所述第一时间间隔为所述零功耗STA两次唤醒状态之间的休眠状态的时长。
  84. 根据权利要求74、82或83所述的方法，其中，所述第一时间信息的时间粒度为第二时间间隔，所述第二时间间隔为所述AP发送所述第一PPDU帧的发送间隔。
  85. 根据权利要求74、82至84中任一项所述的方法，其中，所述第二指示信息独立于所述第一PPDU帧。
  86. 根据权利要求74、82至84中任一项所述的方法，其中，所述第二指示信息承载在所述第一PPDU帧上。
  87. 根据权利要86所述的方法，其中，所述第二指示信息承载在所述第一PPDU帧的物理层部分中。
  88. 根据权利要求74、82至87中任一项所述的方法，其中，所述第一PPDU帧携带的信息不同，则对应的所述第二指示信息不同。
  89. 根据权利要求74所述的方法，其中，所述第三指示信息指示所述接收端为所述零功耗STA的情况下，所述第三指示信息用于指示所述零功耗STA接收所述第一PPDU帧的数据部分。
  90. 根据权利要求74或89所述的方法，其中，所述第三指示信息为关联标识AID或组AID。
  91. 根据权利要求74、89或90所述的方法，其中，所述第三指示信息独立于所述第一PPDU帧。
  92. 根据权利要求74、89或90所述的方法，其中，所述第三指示信息承载在所述第一PPDU帧上。
  93. 根据权利要求92所述的方法，其中，所述第三指示信息承载在所述第一PPDU帧的物理层部分中。
  94. 一种无线通信方法，所述方法包括：
    接入点AP向零功耗站点STA发送第二信息，所述第二信息用于指示第一窗口的到达。
  95. 根据权利要求94所述的方法，其中，所述第二信息用于指示第二时间信息，所述第二时间信息对应所述第一窗口。
  96. 根据权利要求94所述的方法，其中，所述第二信息用于指示触发信息，所述触发信息用于触发所述第一窗口。
  97. 根据权利要求94至96中任一项所述的方法，其中，所述第二信息承载在第二PPDU帧上。
  98. 根据权利要求97所述的方法，其中，所述第二PPDU帧为空数据PPDU帧。
  99. 根据权利要求94至98中任一项所述的方法，其中，所述第一窗口为目标唤醒时间TWT周期。
  100. 根据权利要求94至98中任一项所述的方法，其中，所述第一窗口为所述零功耗STA对应的第一限制接入窗口RAW。
  101. 根据权利要求100所述的方法，其中，第二PPDU帧位于所述第一RAW内或所述第一RAW外，所述第二PPDU帧为承载所述第二信息的PPDU帧。
  102. 根据权利要求100至101中任一项所述的方法，其中，所述第二信息针对所述第一RAW包括的第一时隙，所述第一时隙对应所述第一RAW分组，所述第一RAW分组包括所述零功耗STA。
  103. 根据权利要求84至102中任一项所述的方法，其中，所述方法还包括：
    所述AP指示所述零功耗STA是否接收第一物理层数据协议单元PPDU帧的数据部分。
  104. 根据权利要求103所述的方法，其中，所述AP指示零功耗STA是否接收第一PPDU帧的数据部分，包括：
    所述AP向所述零功耗STA发送第一信息，所述第一信息用于指示所述零功耗STA是否接收所述第一PPDU帧；或者，所述第一信息用于指示所述零功耗STA是否接收所述第一PPDU帧的数据部分。
  105. 根据权利要求104所述的方法，其中，所述第一信息包括以下至少之一，包括：
    第一指示信息，所述第一指示信息用于指示所述第一PPDU帧的帧类型；
    第二指示信息，所述第二指示信息用于指示第一时间信息，所述第一时间信息对应接收所述第一PPDU帧的时间；
    第三指示信息，所述第三指示信息用于指示所述第一PPDU帧的接收端。
  106. 根据权利要求105所述的方法，其中，所述第一指示信息指示所述第一PPDU帧的帧类型为目标帧类型的情况下，所述第一指示信息还用于指示所述零功耗STA接收所述第一PPDU帧的数据部分。
  107. 根据权利要求105或106所述的方法，其中，所述第一指示信息包括以下之一：类型信息或子类型信息。
  108. 根据权利要求105或106所述的方法，其中，所述第一指示信息为第一特征序列，所述第一特征序列为标识所述第一PPDU帧的帧类型的特征序列。
  109. 根据权利要求105或106所述的方法，其中，所述第一指示信息为第一物理前导，所述第一物理前导为标识所述第一PPDU帧的帧类型的物理层前导。
  110. 根据权利要求105至109中任一项所述的方法，其中，所述第一指示信息独立于所述第一PPDU帧。
  111. 根据权利要求105至109中任一项所述的方法，其中，所述第一指示信息承载在所述第一PPDU帧上。
  112. 根据权利要111所述的方法，其中，所述第一指示信息承载在所述第一PPDU帧的物 理层部分中。
  113. 根据权利要求105所述的方法，其中，所述第二指示信息用于指示所述零功耗STA接收所述第一PPDU帧的数据部分。
  114. 根据权利要求105或113所述的方法，其中，所述第一时间信息对应对应第一传送时间或第一时间间隔；所述第一传送时间为所述AP周期性发送所述第一PPDU帧的发送时间，所述第一时间间隔为所述零功耗STA两次唤醒状态之间的休眠状态的时长。
  115. 根据权利要求105、113或114所述的方法，其中，所述第一时间信息的时间粒度为第二时间间隔，所述第二时间间隔为所述AP发送所述第一PPDU帧的发送间隔。
  116. 根据权利要求105、113至115中任一项所述的方法，其中，所述第二指示信息独立于所述第一PPDU帧。
  117. 根据权利要求105、113至115中任一项所述的方法，其中，所述第二指示信息承载在所述第一PPDU帧上。
  118. 根据权利要117所述的方法，其中，所述第二指示信息承载在所述第一PPDU帧的物理层部分中。
  119. 根据权利要求105、113至118中任一项所述的方法，其中，所述第一PPDU帧携带的信息不同，则对应的所述第二指示信息不同。
  120. 根据权利要求105所述的方法，其中，所述第三指示信息指示所述接收端为所述零功耗STA的情况下，所述第三指示信息用于指示所述零功耗STA接收所述第一PPDU帧的数据部分。
  121. 根据权利要求105或120所述的方法，其中，所述第三指示信息为关联标识AID或组AID。
  122. 根据权利要求105、120或121所述的方法，其中，所述第三指示信息独立于所述第一PPDU帧。
  123. 根据权利要求105、120或121所述的方法，其中，所述第三指示信息承载在所述第一PPDU帧上。
  124. 根据权利要求123所述的方法，其中，所述第三指示信息承载在所述第一PPDU帧的物理层部分中。
  125. 一种无线通信装置，应用于零功耗站点STA，包括：
    第一通信单元，配置为被接入点AP指示是否接收第一物理层数据协议单元PPDU帧的数据部分。
  126. 一种无线通信装置，应用于接入点AP，包括：
    第二通信单元，配置为向零功耗站点STA指示是否接收第一物理层数据协议单元PPDU帧的数据部分。
  127. 一种无线通信装置，应用于零功耗站点STA，包括：
    第三通信单元，配置为接收接入点AP发送的第二信息，所述第二信息用于指示第一窗口的到达。
  128. 一种无线通信装置，应用于接入点AP，包括：
    第四通信单元，配置为向零功耗站点STA发送第二信息，所述第二信息用于指示第一窗口的到达。
  129. 一种通信设备，包括：处理器和存储器，该存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执行如权利要求1至31中任一项所述的方法，或者执行如权利要求32至62中任一项所述的方法，或者执行如权利要求63至93中任一项所述的方法，或者执行如权利要求94至124中任一项所述的方法。
  130. 一种芯片，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备，执行如权利要求1至31中任一项所述的方法，或者执行如权利要求32至62中任一项所述的方法，或者执行如权利要求63至93中任一项所述的方法，或者执行如权利要求94至124中任一项所述的方法。
  131. 一种计算机可读存储介质，用于存储计算机程序，所述计算机程序使得计算机，执行如权利要求1至31中任一项所述的方法，或者，执行如权利要求32至62中任一项所述的方法，或者执行如权利要求63至93中任一项所述的方法，或者执行如权利要求94至124中任一项所述的方法。
  132. 一种计算机程序产品，包括计算机程序指令，该计算机程序指令使得计算机，执行如权利要求1至31中任一项所述的方法，或者，执行如权利要求32至62中任一项所述的方法，或者执行如权利要求63至93中任一项所述的方法，或者执行如权利要求94至124中任一项所述的方法。
  133. 一种计算机程序，所述计算机程序使得计算机，执行如权利要求1至31中任一项所述的方法，或者，执行如权利要求32至62中任一项所述的方法，或者执行如权利要求63至93中任一项所述的方法，或者执行如权利要求94至124中任一项所述的方法。
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CN109819505A (zh) * 2019-03-11 2019-05-28 重庆邮电大学 一种网络能效优化的限制接入窗口时隙适配方法
CN110798293A (zh) * 2018-08-02 2020-02-14 华为技术有限公司 物理层聚合过程协议数据单元的通信方法和相关装置
CN112020879A (zh) * 2020-07-23 2020-12-01 北京小米移动软件有限公司 接入控制方法及装置、存储介质
CN112689972A (zh) * 2018-09-20 2021-04-20 索尼半导体解决方案公司 发送设备和发送方法，以及接收设备和接收方法

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CN110798293A (zh) * 2018-08-02 2020-02-14 华为技术有限公司 物理层聚合过程协议数据单元的通信方法和相关装置
CN112689972A (zh) * 2018-09-20 2021-04-20 索尼半导体解决方案公司 发送设备和发送方法，以及接收设备和接收方法
CN109819505A (zh) * 2019-03-11 2019-05-28 重庆邮电大学 一种网络能效优化的限制接入窗口时隙适配方法
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