Communication method and communication device

Abstract

Provided are a communication method and a communication device. The method comprises: a first device sends a first PPDU to a second device, wherein the first PPDU comprises a synchronization domain, and a sequence in the synchronization domain is a first sequence.

Description

Communication method and communication device

[0001] This application claims priority to PCT application No. PCT / CN2024 / 109907 entitled "Communication method and communication device" filed on August 5, 2024, PCT application No. PCT / CN2024 / 120154 entitled "Communication method and communication device" filed on September 20, 2024, PCT application No. PCT / CN2024 / 131425 entitled "Communication method and communication device" filed on November 11, 2024, and PCT application No. PCT / CN2025 / 094960 entitled "Communication method and communication device" filed on May 14, 2025, the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication technology, and more particularly, to a communication method and a communication device. BACKGROUND

[0003] Wireless fidelity (WiFi) performs data transmission based on a physical layer protocol data unit (PPDU). In different protocol versions, the structure of the PPDU can not be exactly the same. SUMMARY

[0004] The present application provides a communication method and a communication device. The various aspects involved in the present application are introduced below.

[0005] In a first aspect, a communication method is provided, comprising: a first device sending a first PPDU to a second device; wherein the first PPDU comprises a synchronization field, and a sequence in the synchronization field is a first sequence.

[0006] In a second aspect, a communication method is provided, comprising: a second device receiving a first PPDU sent by a first device; wherein the first PPDU comprises a synchronization field, and a sequence in the synchronization field is a first sequence.

[0007] In a third aspect, a communication device is provided, the communication device being a first device, and the communication device comprising: a communication module configured to send a first PPDU to a second device; wherein the first PPDU comprises a synchronization field, and a sequence in the synchronization field is a first sequence.

[0008] In a fourth aspect, a communication device is provided, the communication device being a second device, the communication device comprising: a communication module configured to receive a first PPDU transmitted by a first device; wherein the first PPDU comprises a synchronization field, and a sequence in the synchronization field is a first sequence.

[0009] In a fifth aspect, a communication device is provided, comprising a transceiver, a memory and a processor, the memory being configured to store a program, the processor being configured to invoke the program in the memory and control the transceiver to receive or transmit a signal, so that the communication device performs the method according to the first aspect or the second aspect.

[0010] In a sixth aspect, an apparatus is provided, comprising a processor configured to invoke a program from a memory, so that the apparatus performs the method according to the first aspect or the second aspect.

[0011] In a seventh aspect, a chip is provided, comprising a processor configured to invoke a program from a memory, so that a device installed with the chip performs the method according to the first aspect or the second aspect.

[0012] In an eighth aspect, a computer readable storage medium is provided, having a program stored thereon, the program causing a computer to perform the method according to the first aspect or the second aspect.

[0013] In a ninth aspect, a computer program product is provided, comprising a program, the program causing a computer to perform the method according to the first aspect or the second aspect.

[0014] In a tenth aspect, a computer program is provided, the computer program causing a computer to perform the method according to the first aspect or the second aspect. BRIEF DESCRIPTION OF DRAWINGS

[0015] FIG. 1 is an example diagram of a system architecture of a wireless communication system to which embodiments of the present application can be applied.

[0016] FIG. 2 is an example diagram of a zero-power network.

[0017] FIG. 3 is an example diagram of an energy harvesting mode of a zero-power device.

[0018] FIG. 4 is an example diagram of a backscatter communication mode of a zero-power device.

[0019] FIG. 5 is an example diagram of a load modulation mode of a zero-power device.

[0020] FIG. 6 is an example diagram of an encoding mode of a zero-power device.

[0021] FIG. 7 is an example diagram of a PPDU structure provided by the related art.

[0022] FIG. 8 is a flow diagram of a communication method according to an embodiment of the present application.

[0023] FIG. 9A is an example diagram of a PPDU structure according to an embodiment of the present application.

[0024] FIG. 9B is another example diagram of a PPDU structure according to an embodiment of the present application.

[0025] FIG. 9C is yet another example diagram of a PPDU structure according to an embodiment of the present application.

[0026] FIG. 10 is a structural diagram of a communication device according to an embodiment of the present application.

[0027] FIG. 11 is a structural diagram of a communication device according to another embodiment of the present application.

[0028] FIG. 12 is a diagram of an apparatus to which embodiments of the present application can be applied. DETAILED DESCRIPTION

[0029] The technical solutions in the present application will be described below with reference to the accompanying drawings. In order to facilitate understanding, first, the communication terms and communication processes that may be involved in the embodiments of the present application will be introduced with reference to FIGS. 1 to 6.

[0030] Communication system

[0031] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as wireless local area networks (WLAN), wireless fidelity (WiFi), high performance radio local area networks (HIPELAN), wide area networks (WAN), cellular networks or other communication systems, etc. For example, the technical solutions provided by the embodiments of the present application can be applied to communication systems using 802.11 standards. Exemplarily, the 802.11 standards include but are not limited to 802.11a standard, 802.11g standard, 802.11ba standard, 802.11bp standard, and the next generation 802.11 standard, etc.

[0032] FIG. 1 shows a schematic diagram of a communication system to which embodiments of the present application are applicable. As shown in FIG. 1, the communication devices in the communication system 100 can include a first device 110 and a second device 120.

[0033] In some scenarios, for example in a wifi system, the first device 110 can be a station (STA), and the second device 120 can be an access point (AP). The AP is used to create a wireless network, and is used to provide wireless network services for the STA. The STA can access the network through the AP.

[0034] The AP can be a device in a wireless network. The AP can be a communication server, a router, a switch, a bridge, or the like communication entity, or the AP can include various forms of macro base stations, micro base stations, relay stations, and the like. Of course, the AP can also be a chip, a circuit, or a processing system in these various forms of devices, so as to implement the method and function of the embodiments of the present application. The AP can be applied to various scenarios, for example, a sensor node in a smart city, such as a smart water meter, a smart electricity meter, a smart air detection node; a smart device in a smart home, such as a smart camera, a projector, a display screen, a television, a sound, a refrigerator, a washing machine, and the like; a node in the Internet of Things; an entertainment terminal, such as an AR, a VR, and the like wearable device; a smart device in a smart office, such as a printer, a projector, and the like; a vehicle networking device in vehicle networking; some infrastructure in daily life, such as a vending machine, a self-service navigation station of a supermarket, a self-service cash register device, a self-service ordering machine, and the like.

[0035] The STA can be a device with wireless transceiving function, for example, supporting 802.11 series protocol, and communicating with the AP or other STAs. For example, the STA is any user communication device that allows a user to communicate with the AP and thus communicate with the WLAN network. The STA includes, for example, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile terminal, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user apparatus, and the like.

[0036] The STA can also be a device that provides voice and / or data connectivity to users, such as a handheld device with wireless connection function, a vehicle-mounted device, etc. For example, it can include a mobile phone, a tablet computer, a notebook computer, a palm computer, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved public land mobile network (PLMN), etc. The embodiments of the present application are not limited thereto.

[0037] The STA can also be a wearable device. The wearable device can also be referred to as a wearable smart device, which is a general term of devices that are designed and developed by applying wearable technology to daily wear, such as glasses, gloves, watches, clothes, and shoes, etc. For example, it can include a smart watch or smart glasses, etc., and only focus on a certain application function, which needs to be used in cooperation with other devices such as a smart phone, such as various types of smart bracelets, smart jewelry, etc.

[0038] The STA can also be a terminal device in an internet of things (IoT) system, where the IoT is an important part of future information technology development, and its main technical feature is to connect objects through communication technology and network, so as to realize the intelligent network of man-machine interconnection and object-object interconnection.

[0039] The STA can also be a device in a vehicle-to-everything (V2X) system. In the V2X system, the communication mode is collectively referred to as V2X, where X can represent anything. For example, the V2X communication includes vehicle-to-vehicle (V2V) communication, vehicle-to-infrastructure (V2I) communication, vehicle-to-pedestrian (V2P) communication, vehicle-to-network (V2N) communication, and the like.

[0040] In addition, the STA can also include a smart printer, a train detector, a gas station sensor, and the like, and the main functions thereof include collecting data, receiving control information and downlink data from the AP, and transmitting electromagnetic waves to transmit data to the AP.

[0041] The AP in the embodiments of the present application can be a device for communicating with the STA. The AP can be a network device or a terminal device in a wireless local area network. The AP can be used to communicate with the STA through the wireless local area network.

[0042] From the perspective of the communication mode supported by the AP, in some implementations, the AP can be a device that supports the 802.11 mode. Further, the AP can also be a device that supports multiple current and future 802.11 family WLAN modes such as 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, 802.11ba, and 802.11a, such as a device that supports 802.11bp.

[0043] From the perspective of the communication mode supported by the STA, in some implementations, the STA can be a device that supports the 802.11 mode. The STA can also support multiple current and future 802.11 family WLAN modes such as 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, 802.11ba, and 802.11a, such as a device that supports 802.11bp.

[0044] It should be understood that the specific forms of the STA and the AP in the embodiments of the present application are not specially limited, and are only exemplary described herein.

[0045] In addition, the technical solutions implemented by the present application can also be extended to other scenarios outside the wifi system, for example, in some other scenarios, the first device 110 can be a terminal device, and the second device 120 can be a network device. Among them, the network device can be a device that communicates with the terminal device. The network device can provide communication coverage for a specific geographic area and can communicate with terminal devices located within the coverage area.

[0046] Among them, the terminal device can also be referred to as a user equipment (user equipment, UE), an access terminal, a user unit, a user station, a mobile station, a mobile station (mobile station, MS), a mobile terminal (mobile terminal, MT), a remote station, a remote terminal, a mobile device, a user terminal, a terminal device, a wireless communication device, a user agent or a user device. For example, the terminal device can refer to a device that provides voice and / or data connectivity to a user, and can be used to connect people, things and machines, such as household appliances, sensors, electronic tags and the like with wireless connection functions. The terminal device can also be a wireless terminal in a smart home, a wireless terminal in an IWSN, a wireless terminal in smart logistics and smart warehousing, a wireless terminal in self driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, etc.

[0047] The network device can be a device for communicating with the terminal device. The network device can also be an access network device or a radio access network device, for example, the network device can be a base station. The network device in the embodiments of the present application can refer to a radio access network (RAN) node or device that accesses the terminal device to the wireless network. The base station can broadly cover various names in the following or can be replaced by the following names, for example: node B (NodeB), evolved node B (eNB), next generation node B (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master station (MeNB), auxiliary station (SeNB), multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. The base station can be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof. The base station can also refer to a communication module, modem or chip for being disposed in the foregoing device or apparatus. The base station can also be a mobile switching center and a device that undertakes a base station function in device-to-device (D2D), vehicle-to-everything (V2X), machine-to-machine (M2M) communication, network side device in 6G network, device that undertakes a base station function in future communication system, etc. The base station can support networks of the same or different access technologies. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device.

[0048] The base station can be fixed or mobile. For example, a helicopter or a drone can be configured to act as a mobile base station, and one or more cells can move according to the location of the mobile base station. In other examples, the helicopter or the drone can be configured to act as a device that communicates with another base station.

[0049] In some deployments, the network device in the embodiments of the present application can refer to a CU or a DU; or the network device includes a CU and a DU. The gNB can also include an AAU.

[0050] The network device and the terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on water surface; and can also be deployed on airplanes, balloons and satellites in the air. The scenarios where the network device and the terminal device are located are not limited in the embodiments of the present application.

[0051] It should be understood that all or part of the functions of the communication device in the present application can also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform such as a cloud platform.

[0052] FIG. 1 exemplarily shows two first devices 110 and one second device 120. Optionally, the communication system 100 can include multiple second devices 120, and the communication system 100 can also include other numbers of first devices 110.

[0053] Hereinafter, the technical solutions of the embodiments of the present application are described by taking a WIFI system as an example. It can be understood that the technical solutions of the embodiments of the present application can also be extended to other systems.

[0054] Zero-power communication technology

[0055] The zero-power communication network can use energy harvesting and back scattering communication technology for communication. The zero-power communication network is composed of a network device 110 and a zero-power device 120, as shown in FIG. 2. The network device 110 is used to send a wireless power supply signal, a downlink communication signal to the zero-power device 120, and receive a back scattering signal of the zero-power device. A basic zero-power device 120 can include an energy harvesting module, a back scattering communication module and a low-power computing module. In addition, the zero-power device 120 can also have a memory or a sensor for storing some basic information (such as article identification, etc.) or obtaining environmental temperature, environmental humidity and other sensing data. The energy harvesting technology and the back scattering communication technology in the zero-power communication are introduced as follows.

[0056] As shown in FIG. 3, the energy harvesting module realizes the collection of space electromagnetic wave energy based on the principle of electromagnetic induction, and then obtains the energy required to drive the zero-power device to work. For example, the energy harvesting module can be used to drive the low-power demodulation and modulation module, the sensor and the memory and other modules in the zero-power device to work. Therefore, the zero-power device does not need a traditional battery.

[0057] As shown in FIG. 4, the zero-power device 120 receives the wireless signal sent by the network device 110. After receiving the wireless signal, the zero-power device 120 modulates the wireless signal to load the information to be sent. Then, the zero-power device 120 radiates the modulated signal from the antenna. The above information transmission process is called backscatter communication. Backscattering and load modulation are inseparable. Load modulation adjusts and controls the circuit parameters of the oscillation loop of the zero-power device according to the beat of the data stream, so that the size of the impedance and other parameters change, thereby completing the modulation. Load modulation technology mainly includes resistance load modulation and capacitance load modulation. In resistance load modulation, a resistance is connected in parallel with the load, and the resistance is turned on or off based on the control of the binary data stream, as shown in FIG. 5. The on-off of the resistance will cause the change of the circuit voltage, thereby realizing amplitude shift keying (ASK), that is, the amplitude of the backscattering signal of the zero-power device is adjusted to realize the modulation and transmission of the signal. Similarly, in capacitance load modulation, the on-off of the capacitance can realize the change of the circuit resonance frequency, realize frequency shift keying (FSK), that is, the working frequency of the backscattering signal of the zero-power device is adjusted to realize the modulation and transmission of the signal.

[0058] As can be seen, the zero-power device modulates the incoming signal by means of load modulation to realize backscatter communication. Therefore, the zero-power device has the following obvious advantages:

[0059] First, the zero-power device does not actively emit signals, so it does not need complex radio frequency links such as power amplifiers (PAs), radio frequency filters, etc.

[0060] Second, the zero-power device does not need to actively generate high-frequency signals, so it does not need a high-frequency crystal oscillator.

[0061] Third, by means of backscatter communication, the signal transmission of the zero-power device does not consume the energy of the zero-power device itself.

[0062] Due to the obvious advantages of low cost, zero power, small size, etc., the zero-power device can be widely used in various industries. For example, the zero-power device can be applied to logistics, intelligent warehousing, smart agriculture, energy and power, industrial internet, etc. Or, the zero-power device can also be applied to smart wearable, smart home, etc.

[0063] The encoding method that can be used in the zero-power communication process is described below.

[0064] The zero-power communication system can encode a signal using one of the following encoding methods: non-return zero (NRZ) encoding, Manchester encoding, unipolar RZ encoding, differential binary phase (DBP) encoding, Miller encoding, and differential encoding.

[0065] (1) Non-Return Zero (NRZ) Encoding

[0066] NRZ encoding represents binary "1" with a high level and binary "0" with a low level, as shown in (a) of FIG. 6.

[0067] (2) Manchester Encoding

[0068] Manchester encoding is also called split phase coding. In Manchester encoding, the value of a bit is represented by a change (rise / fall) in level at the middle of the bit length, with a negative transition at the middle of the bit period representing binary "1" and a positive transition at the middle of the bit period representing binary "0", as shown in (b) of FIG. 6.

[0069] (3) Unipolar RZ Encoding

[0070] Unipolar RZ encoding represents binary "1" with a high level in the first half of the bit period and binary "0" with a low level signal that continues throughout the bit period, as shown in (c) of FIG. 6. Unipolar RZ encoding can be used to extract a bit synchronization signal.

[0071] (4) Differential Binary Phase (DBP) Encoding

[0072] DBP encoding represents binary "0" with any edge in the middle of the bit period and binary "1" if there is no edge, as shown in (d) of FIG. 6. In addition, the level is inverted at the beginning of each bit period. Thus, it is easier for a receiver to reconstruct the bit clock.

[0073] (5) Miller Encoding

[0074] Miller encoding represents binary "1" with any edge in the middle of the bit period and binary "0" with a constant level in the next bit period. The level is toggled at the beginning of the bit period, as shown in (e) of FIG. 6. Thus, it is easier for a receiver to reconstruct the bit clock.

[0075] (6) Differential Encoding

[0076] In differential encoding, each binary "1" to be transmitted causes a change in signal level, while for binary "0" the signal level remains unchanged.

[0077] The following introduces the classification of zero-power devices.

[0078] In zero-power communication technology, based on the energy source of the zero-power device and the way of energy use, the zero-power device can be divided into three categories: passive zero-power device, semi-passive zero-power device, and active zero-power device.

[0079] The passive zero-power device usually does not need to be equipped with a battery. When the passive zero-power device is close to the network device, the passive zero-power device is in the near-field range formed by the antenna radiation of the network device. At this time, the antenna of the passive zero-power device can generate induced current through electromagnetic induction, and the induced current can power the passive zero-power device to drive the low-power chip circuit of the passive zero-power device, realize the demodulation of the forward link signal, and the signal modulation of the backward link, etc. For the backscatter link, the passive zero-power device can use the backscatter implementation to transmit signals.

[0080] Based on the above introduction, it can be seen that the passive zero-power device does not need to be equipped with a built-in battery to drive, whether it is based on the transmission process of the forward link or the transmission process of the backward link, it is a truly zero-power device.

[0081] In some implementation manners, the above passive zero-power device can be an electronic tag, and correspondingly, the network device can be a reader / writer of a radio frequency identification (RFID) system, for reading the content in the electronic tag and / or for changing the content in the electronic tag.

[0082] The semi-passive zero-power device itself also does not install a conventional battery, but can use an energy harvesting module, such as an RF energy harvesting module, to harvest radio wave energy, and at the same time store the harvested energy in an energy storage unit such as a capacitor. After the energy storage unit obtains energy, it can power the zero-power device to drive the low-power chip circuit. Realize the demodulation of the forward link signal, and the signal modulation of the backward link, etc. For the backscatter link, the zero-power device uses the backscatter implementation to transmit signals.

[0083] Based on the above introduction, it can be seen that the semi-passive zero-power device does not need to be equipped with a built-in battery to drive, whether it is based on the transmission process of the forward link or the transmission process of the backward link, although it uses the energy stored in the capacitor in the work, but the energy comes from the radio energy harvested by the energy harvesting module, so it is also a truly zero-power device.

[0084] The active zero-power device can be built-in with a battery. The battery can power the active zero-power device to drive the low-power chip circuit of the active zero-power device to implement demodulation of a forward link signal and modulation of a backward link signal. For a backscatter link, the active zero-power device uses a backscatter implementation to transmit a signal. Therefore, the zero-power of the terminal mainly reflects that the signal transmission of the backward link does not need to consume the power of the terminal itself, but uses the backscatter mode.

[0085] For the active zero-power device, the built-in battery can be used for power supply, so that the communication distance of the active zero-power device can be increased and the communication reliability can be improved. Therefore, the active zero-power device can be applied in some scenarios with relatively high requirements on communication distance, reading delay and the like.

[0086] In some implementations, the active zero-power device described above can be an electronic tag, and the network device can be a radio frequency identification (RFID) reader. At this time, the built-in battery can power the RFID chip in the electronic tag to increase the reading and writing distance between the RFID reader and the electronic tag. On the other hand, the built-in battery can power the RFID chip in the electronic tag to shorten the reading and writing delay of the electronic tag by the RFID reader, which is beneficial to improve the communication reliability.

[0087] In addition to classifying zero-power devices based on energy sources and energy usage modes, zero-power devices can also be classified based on transmitter types.

[0088] First, zero-power devices based on backscatter

[0089] Such zero-power devices use the backscatter mode described above to transmit uplink data. Such devices do not have an active transmitter for active transmission, but only have a backscatter transmitter. Therefore, when the terminal transmits data, the network device needs to provide a carrier, and the terminal device performs backscatter based on the carrier to realize data transmission.

[0090] Second, zero-power devices based on active transmitters

[0091] Such zero-power devices use an active transmitter with active transmission capability to transmit uplink data, so that the zero-power device can transmit data using its own active transmitter when transmitting data, without the need for the network device to provide a carrier. The active transmitter suitable for the zero-power device can be, for example, an ultra-low-power ASK transmitter, an ultra-low-power FSK transmitter, and the like. Based on the current implementation, the overall power consumption of such a transmitter can be reduced to 400-600 uw when transmitting a 100 uw signal.

[0092] Third, zero-power devices with both backscatter and active transmitters

[0093] Such zero-power devices can support both backscattering and active transmitters. The zero-power devices can determine which type of uplink signal transmission to use, i.e., backscattering or active transmitter, based on different situations (e.g., the status of power, available ambient energy) or based on the scheduling of network devices.

[0094] Cellular passive internet of things

[0095] Cellular internet of things technologies are developing rapidly. For example, the 3rd generation partnership project (3GPP) has standardized narrow band internet of things (NB-IoT), machine type communication (MTC), reduced capability (RedCap), and other internet of things technologies. However, there are still many scenarios in which internet of things communication needs cannot be met, for example:

[0096] First, harsh communication environment

[0097] Some internet of things scenarios may face extreme environments such as high temperature, extremely low temperature, high humidity, high pressure, high radiation, or high-speed motion. For example, ultra-high voltage substations, high-speed train track monitoring, high-cold environment monitoring, industrial production lines, and the like. In these scenarios, due to the working environment limitations of conventional power supplies, existing internet of things terminals will not be able to work. In addition, extreme working environments are also not conducive to the maintenance of internet of things, such as replacing batteries.

[0098] Second, extremely small terminal form factor requirement

[0099] Some internet of things communication scenarios, such as food traceability, commodity circulation, and smart wearables, require terminals to have extremely small sizes to facilitate use in these scenarios. For example, internet of things terminals for commodity management in the circulation link are usually in the form of electronic tags, which are embedded in commodity packaging in a very small form factor. For another example, lightweight wearable devices can meet user needs while improving user experience.

[0100] Third, extremely low-cost internet of things communication requirement

[0101] Many IoT communication scenarios require the cost of IoT terminals to be low enough to enhance the competitiveness relative to other alternative technologies. For example, in a logistics or warehouse scenario, in order to facilitate the management of a large number of circulating goods, an IoT terminal can be attached to each good, so that the entire process and cycle of logistics can be accurately managed through communication between the terminal and the logistics network. These scenarios require the price of the IoT terminal to be competitive enough.

[0102] Therefore, in order to cover these unmet IoT communication needs, ultra-low-cost, extremely small-size, battery-free / maintenance-free IoT terminals are needed in cellular networks, and zero-power IoT terminals can meet this demand.

[0103] In the process of standardization discussion, zero-power IoT can also be called ambient power enabled IoT (ambient IoT), and some technical literature refers to zero-power IoT as passive IoT. Ambient IoT device means an IoT device that is driven by various ambient energies such as wireless radio frequency energy, light energy, solar energy, thermal energy, and mechanical energy. Such a device can have no energy storage capability or can have very limited energy storage capability (such as using a capacitor with a capacity of tens of uF). Compared with traditional IoT devices, ambient IoT devices have the advantages of no conventional battery, no maintenance, small size, low complexity, low cost, long life cycle, and the like.

[0104] Based on the discussion of the application scenarios of ambient power enabled IoT by 3GPP SA1, ambient power enabled IoT is proposed to be used in at least the following four scenarios:

[0105] Scenario 1: object identification, such as logistics, production line product management, and supply chain management;

[0106] Scenario 2: environmental monitoring, such as temperature, humidity, and harmful gas monitoring of working environment and natural environment;

[0107] Scenario 3: positioning, such as indoor positioning, intelligent search, and production line article positioning;

[0108] Scenario 4: intelligent control, such as intelligent control of various appliances in smart home (turning on / off air conditioner, adjusting temperature) and intelligent control of various facilities in agricultural greenhouse (automatic irrigation, fertilization).

[0109] Typical wifi PPDU structure

[0110] Figure 7 shows the PPDU structure of typical wifi standards (such as 802.11a, 802.11n, 802.11ac, 802.11ax, 802.11ba, etc.). As can be seen from Figure 7, the typical wifi PPDU structure includes a preamble part (legacy short training field (L-STF), legacy long training field (L-LTF)), a compatible physical header (legacy signal (L-SIG)), and a data part, etc. Some PPDU structures also include newly added physical header fields, such as VHT-SIG A1 and VHT-SIG A2 in very high throughput (VHT) (802.11ac).

[0111] In addition, a new type of PPDU structure is also designed in the 802.11ba standard. The PPDU includes a wideband part (20MHz) at the front: legacy preamble (L-STF, L-LTF), L-SIG field, binary phase shift keying mark (BPSK-Mark), and a narrowband part after that. The narrowband part has a bandwidth of 4MHz, and the narrowband part includes a synchronization domain part (Sync) and a data part (data). The wideband part of the PPDU is mainly to ensure compatibility with other wifi devices, so that when a device supporting 802.11ba has data transmission, other devices can recognize the data transmission through the preamble, L-SIG field, etc. of the wideband part, so as to ensure fair use of the channel. The narrowband part of the PPDU is mainly used for wak-up radio (WUR), where the synchronization domain is mainly used for signal synchronization, and the data part is used for data transmission.

[0112] In addition, due to the capability limitation of some devices, the PPDU format can have no legacy preamble part, only the following narrowband part.

[0113] In 802.11ba, the data rate of the data part is indicated by the Sync part.

[0114] Specifically, 802.11ba defines a base sequence W, which has the following form: W = [10100100101110110001011100111000].

[0115] If the Sync portion carries a synchronization sequence of two Ws, i.e., [WW], it indicates that the data rate of the PPDU is a low data rate, i.e., 62.5kbps. If the Sync portion carries a complement sequence of Ws then it indicates that the data rate of the PPDU is a high data rate, i.e., 250kbps. The form of the above is as follows:

[0116] The related art is introduced above, and the embodiments of the present application are described in detail below.

[0117] The embodiments of the present application propose a sequence design method, and the designed sequence can be applied to the synchronization domain of a PPDU. The PPDU can be a PPDU of a protocol other than 802.11ba (such as 802.11bp), for example, a PPDU received or transmitted by an AMP device.

[0118] FIG. 8 is a flowchart of a communication method provided by the embodiments of the present application. The method shown in FIG. 8 is described from the perspective of the first device and the second device interacting with a first PPDU (see step S810 in FIG. 8). The first device is the transmitting end of the first PPDU. The second device is the receiving end of the first PPDU.

[0119] In some implementations, the first device is an AP, and the second device is a STA. At this time, the first PPDU can be understood as a downlink PPDU. In this scenario, the second device can be an AMP device, for example. Exemplarily, the second device is an AMP device supporting a backscatter communication mode and / or an AMP device supporting a non-backscatter communication mode (such as an active transmission communication mode). The working frequency of the backscatter communication mentioned here can be 2.4GHz or S1G, for example.

[0120] In other implementations, the first device is a STA, and the second device is an AP. At this time, the first PPDU can be understood as an uplink PPDU. In this scenario, the first device can be an AMP device, for example. Exemplarily, the first device is an AMP device supporting a backscatter communication mode or an AMP device supporting a non-backscatter communication mode (such as an active transmission communication mode). The working frequency of the backscatter communication mentioned here can be 2.4GHz or S1G, for example.

[0121] In some implementations, the first PPDU can include a wideband portion (or wideband signal portion) and / or a narrowband portion (or narrowband signal portion). The wideband portion occupies a channel bandwidth that is greater than a channel bandwidth occupied by the narrowband portion. For example, the wideband portion occupies a bandwidth of 20 MHz; the narrowband portion occupies a bandwidth of 4 MHz. The narrowband portion can include a synchronization field (or synchronization domain). The synchronization field can be used to carry a synchronization sequence. The synchronization field mentioned herein can be used for a first type of device to synchronize. The first type of device mentioned herein can be a device other than a WUR-based device. For example, the first type of device is an AMP device. Accordingly, the synchronization field in the first PPDU can be referred to as an AMP synchronization field (AMP-SYNC field, or AMP-SYNC domain).

[0122] In some implementations, each portion in the time domain of the first PPDU can occupy the same bandwidth. For example, the first PPDU can be a typical PPDU structure as described in the section “Typical WiFi PPDU Structure” above. Alternatively, the first PPDU can be a PPDU structure that includes only a narrowband portion. Illustratively, the first PPDU includes a synchronization field and a data field, and the synchronization field precedes the data field.

[0123] In some implementations, the first PPDU does not include a legacy preamble. Further, in some implementations, the first PPDU can include only a narrowband portion. For example, the first PPDU is an uplink PPDU, and the first device is an AMP device. Due to the capability limitation of the AMP device, the AMP device can transmit a PPDU that does not include a legacy preamble, and the PPDU includes only a narrowband portion. Illustratively, the AMP device can transmit the PPDU that does not include a legacy preamble to an AP via a backscatter communication. Alternatively, the AMP device can transmit the PPDU that does not include a legacy preamble to an AP via an active transmission. Illustratively, the first PPDU includes a synchronization field and a data field, and the synchronization field precedes the data field.

[0124] As an example, the first PPDU is a downlink PPDU, and the first PPDU includes a wideband portion and / or a narrowband portion, and the synchronization field is in the narrowband portion.

[0125] As another example, the first PPDU is a downlink PPDU, and each portion in the time domain of the first PPDU occupies the same bandwidth, or the first PPDU does not include a legacy preamble, or the first PPDU includes only a narrowband portion and does not include a wideband portion. In this case, the first PPDU can include, for example, a synchronization field and a data field, and the synchronization field precedes the data field.

[0126] As another example, the first PPDU is an uplink PPDU, the first PPDU includes a wideband part and / or a narrowband part, and the synchronization field is located in the narrowband part.

[0127] As another example, the first PPDU is an uplink PPDU, each part in the time domain of the first PPDU occupies the same bandwidth, or the first PPDU does not include a legacy preamble part, or the first PPDU only includes a narrowband part and does not include a wideband part. In this case, the first PPDU may, for example, include a synchronization field and a data field, and the synchronization field is located before the data field.

[0128] For ease of description, the sequence in the synchronization field of the first PPDU is referred to as a first sequence (which can be a binary sequence) hereinafter. Embodiments of the present application do not make specific limitations on the implementation of the first sequence, which is illustrated in detail hereinafter.

[0129] The first sequence can include a first number of 0s and a second number of 1s. The first number and the second number can be equal or unequal. The first number and the second number being equal means that the 1s and the 0s in the first sequence each account for half. The 1s and the 0s in the first sequence each accounting for half can make the first sequence have better randomness or pseudo-randomness, which makes the first sequence less likely to be cracked, thereby helping to improve the security of information transmission.

[0130] According to the current regulations of the institute of electrical and electronics engineers (IEEE), if a sequence of consecutive 0s or consecutive 1s occupies a time length of a certain time length (such as 9 microseconds), it means that the channel is empty and other devices can occupy the channel. To avoid the channel where the first PPDU is located being occupied by other devices, in some implementations, the time length occupied by the modulation symbols corresponding to the consecutive 0s or consecutive 1s in the first sequence can be set to be less than or equal to a first time length. The first time length mentioned here can be set according to the relevant regulations of the IEEE. For example, the first time length can be set to be less than or equal to 9 microseconds (us). Exemplarily, the first time length can be set to 8 microseconds, 7 microseconds or 6 microseconds. Taking the case where the first sequence is modulated by an on-and-off keying (OOK) modulation mode (in which the symbol obtained by modulating 1 bit of information may, for example, occupy 2 microseconds) as an example, the number of consecutive 0s or consecutive 1s in the first sequence can be set to be less than or equal to 4 (or 3). For example, it can be specified that the number of consecutive 0s or consecutive 1s in the first sequence is less than or equal to 3.

[0131] In some implementations, the first bit of the first sequence is 1. Setting the first bit of the first sequence to 1 can facilitate detection by the receiver. Of course, in other implementations, the first bit of the first sequence can also be 0.

[0132] In some implementations, the sequence in the synchronization field can carry transmission parameters (or physical layer parameters). The transmission parameters referred to herein refer to parameters related to the first PPDU transmission. The transmission parameters can include one or more of the following, for example: data rate, symbol length, transmission mode, waveform (or modulation mode), channel number, coding mode. In order to enable the sequence in the synchronization field to carry the transmission parameters, a plurality of candidate sequences can be set for the synchronization field, each candidate sequence of the plurality of candidate sequences can correspond to one or more transmission parameters, and different candidate sequences correspond to different transmission parameters. In this way, when the receiver detects that the first sequence is a certain candidate sequence of the plurality of candidate sequences, it can be determined that the first PPDU is transmitted using the transmission parameters corresponding to the candidate sequence. By using the synchronization field to carry the transmission parameters, a special indication field for the transmission parameters can be avoided, thereby reducing the amount of resources occupied by the first PPDU and improving the overall capacity and efficiency of the communication system.

[0133] It should be noted that different candidate sequences can correspond to one or more of the following: different values of the same transmission parameter; different types of transmission parameters. Some specific examples are given below.

[0134] For example, the transmission parameter carried by the candidate sequence in the synchronization field can comprise a data rate. The data rate can refer to a transmission rate of a data portion of the first PPDU. Illustratively, the candidate sequences of the synchronization field can comprise a first candidate sequence and a second candidate sequence, wherein the first candidate sequence corresponds to a first data rate and the second candidate sequence corresponds to a second data rate. The first data rate can be, for example, a high data rate. The second data rate can be, for example, a low data rate. Illustratively, the first data rate can be 250 kbps and the second data rate can be 62.5 kbps. Alternatively, the first data rate can be 1 Mbps and the second data rate can be 250 kbps. Alternatively, the first data rate can be 4 Mbps or 1 Mbps, and the second data rate can be 1 Mbps (corresponding to 4 Mbps) or 250 kbps (corresponding to 1 Mbps), respectively. For example, the first PPDU is a downlink PPDU, the first data rate is 250 kbps, and the second data rate can be 62.5 kbps. For another example, the first PPDU is an uplink PPDU, and the first device is an AMP device supporting an active transmission communication mode, the first data rate can be 1 Mbps, and the second data rate can be 250 kbps. For another example, the first PPDU is an uplink PPDU, and the first device is a PPDU supporting a backscattering communication mode, the first data rate can be 4 Mbps or 1 Mbps, and the second data rate can be 1 Mbps (corresponding to 4 Mbps) or 250 kbps (corresponding to 1 Mbps), respectively. If the first sequence in the first PPDU is the first candidate sequence, the data rate represented by the first PPDU is the first data rate; if the first sequence in the first PPDU is the second candidate sequence, the data rate represented by the first PPDU is the second data rate.

[0135] For another example, the transmission parameter carried by the candidate sequence in the synchronization field can comprise a symbol length. The symbol length can refer to a time length occupied by a symbol after a bit in the first sequence is modulated into the symbol. Illustratively, the candidate sequences of the synchronization field can comprise a first candidate sequence and a second candidate sequence, wherein the first candidate sequence corresponds to a first symbol length and the second candidate sequence corresponds to a second symbol length. The first symbol length can be, for example, 2 microseconds. The second symbol length can be, for example, 4 microseconds. If the first sequence in the first PPDU is the first candidate sequence, the symbol length represented by the first PPDU is the first symbol length; if the first sequence in the first PPDU is the second candidate sequence, the symbol length represented by the first PPDU is the second symbol length.

[0136] For another example, the transmission parameter carried by the candidate sequence in the synchronization field can include a transmission manner. The transmission manner can refer to whether the first PPDU adopts an active transmission manner or a backscattering transmission manner, for example. Illustratively, the candidate sequence of the synchronization field can include a first candidate sequence and a second candidate sequence, where the first candidate sequence corresponds to the active transmission manner, and the second candidate sequence corresponds to the backscattering transmission manner. If the first sequence in the first PPDU is the first candidate sequence, the transmission manner represented by the first PPDU is the active transmission manner; if the first sequence in the first PPDU is the second candidate sequence, the transmission manner represented by the first PPDU is the backscattering transmission manner.

[0137] For another example, the transmission parameter carried by the candidate sequence in the synchronization field can include a waveform. The waveform can include a first waveform and a second waveform, for example. The first waveform can be an OOK waveform, for example, and the second waveform can be a BPSK waveform, for example. Illustratively, the candidate sequence of the synchronization field can include a first candidate sequence and a second candidate sequence, where the first candidate sequence corresponds to the OOK waveform, and the second candidate sequence corresponds to the BPSK waveform. If the first sequence in the first PPDU is the first candidate sequence, the waveform represented by the first PPDU is the OOK waveform; if the first sequence in the first PPDU is the second candidate sequence, the waveform represented by the first PPDU is the BPSK waveform.

[0138] For another example, the transmission parameter carried by the candidate sequence in the synchronization field can include a channel number (or frequency domain position). The channel number can be used to indicate the frequency domain position of the channel on which the first PPDU is transmitted. Illustratively, the candidate sequence of the synchronization field can include a first candidate sequence and a second candidate sequence, where the first candidate sequence corresponds to a first channel number, and the second candidate sequence corresponds to a second channel number. If the first sequence in the first PPDU is the first candidate sequence, the first PPDU is represented as being transmitted on the channel corresponding to the first channel number; if the first sequence in the first PPDU is the second candidate sequence, the first PPDU is represented as being transmitted on the channel corresponding to the second channel number.

[0139] For another example, the transmission parameter carried by the candidate sequence in the synchronization field can comprise an encoding manner. The encoding manner can comprise a first encoding manner and a second encoding manner. The first encoding manner can be, for example, Manchester encoding. The second encoding manner can be, for example, low density parity check code (LDPC) encoding. By way of example, the candidate sequence of the synchronization field can comprise a first candidate sequence and a second candidate sequence, wherein the first candidate sequence corresponds to the first encoding manner, and the second candidate sequence corresponds to the second encoding manner. If the first sequence in the first PPDU is the first candidate sequence, the encoding manner representing the first PPDU is Manchester encoding; if the first sequence in the first PPDU is the second candidate sequence, the encoding manner representing the first PPDU is LDPC encoding.

[0140] For another example, the candidate sequence of the synchronization field can comprise a first candidate sequence and a second candidate sequence, wherein the first candidate sequence corresponds to a specific data rate and a symbol length, and the second candidate sequence corresponds to a specific data rate and an encoding manner.

[0141] The synchronization field can comprise one or more candidate sequences, and the one or more candidate sequences can be associated with (or determined based on) a base sequence set. The base sequence set can comprise M base sequences, where M is an integer greater than or equal to 1. The base sequence set can be determined by AP configuration, pre-configuration, or a protocol pre-defined manner.

[0142] In some implementations, the one or more candidate sequences of the synchronization field being associated with the base sequence set can comprise: the one or more candidate sequences of the synchronization field being candidate sequences corresponding to the M base sequences. Wherein each base sequence corresponds to N candidate sequences, and N is an integer greater than or equal to 1. It should be understood that the number of N candidate sequences corresponding to each base sequence (i.e., the value of N) can be the same, in which case the number of candidate sequences of the synchronization field can be MxN. Alternatively, the value of N corresponding to at least two base sequences can be different, in which case the total number of candidate sequences can be the sum of the number of candidate sequences corresponding to each base sequence.

[0143] As mentioned above, each base sequence in the base sequence set can correspond to N candidate sequences. The embodiments of the present application do not make specific limitations on the correspondence between the base sequence and the candidate sequence. For example, each base sequence can correspond to N candidate sequences in N ways respectively. The N ways mentioned herein can comprise one or more of the following, for example:

[0144] Way one: the candidate sequence is the corresponding base sequence;

[0145] Way two: the candidate sequence is the complement sequence of the corresponding base sequence;

[0146] The third mode: the candidate sequence is a sequence formed by repeating connection of the corresponding base sequence.

[0147] The fourth mode: the candidate sequence is a sequence formed by repeating connection of the complement sequence of the corresponding base sequence.

[0148] The fifth mode: the candidate sequence is a sequence formed by connection of the corresponding base sequence and the complement sequence of the corresponding base sequence.

[0149] In the first mode, the "candidate sequence is the corresponding base sequence" can be understood as directly taking the base sequence as the candidate sequence. Assuming that the base sequence set is [G], and the N modes include the first mode, [G] can be taken as the candidate sequence.

[0150] In the second mode, the "candidate sequence is the complement sequence of the corresponding base sequence" can be understood as taking the complement sequence of the base sequence as the candidate sequence. It should be understood that if one sequence is the complement sequence of another sequence, the values of the two sequences at the corresponding bit positions are opposite. For example, assuming that the base sequence set is [G], and the N modes include the second mode, [G] can be taken as the candidate sequence. , wherein, represents the complement sequence set of the base sequence set.

[0151] In the third mode, the "candidate sequence is a sequence formed by repeating connection of the corresponding base sequence" can be understood as taking the sequence formed by repeating connection of the base sequence as the candidate sequence. For example, assuming that the base sequence set is [G], and the N modes include the third mode, [G G] and / or [G G GG] can be taken as the candidate sequence.

[0152] In the fourth mode, the "candidate sequence is a sequence formed by repeating connection of the complement sequence of the corresponding base sequence" can be understood as taking the sequence formed by repeating connection of the complement sequence of the base sequence as the candidate sequence. For example, assuming that the base sequence set is [G], and the N modes include the fourth mode, [G G] and / or [G G GG] can be taken as the candidate sequence. and / or as the candidate sequence.

[0153] In the fifth mode, the "candidate sequence is a sequence formed by connection of the corresponding base sequence and the complement sequence of the corresponding base sequence" can be understood as taking the sequence formed by connection of the base sequence and the complement sequence of the base sequence as the candidate sequence. It should be understood that in the candidate sequence, the base sequence and the complement sequence of the base sequence can appear repeatedly or not repeatedly. If the base sequence and the complement sequence of the base sequence appear repeatedly, they can be repeated at equal intervals or not at equal intervals. For example, assuming that the base sequence set is [G], and the N modes include the fifth mode, [G G] and / or [G G G G G] can be taken as the candidate sequence. as the candidate sequence.

[0154] Alternatively, in some other implementations, the aforementioned "one or more candidate sequences of the synchronization field are associated with the base sequence set" can include or be replaced by: the one or more candidate sequences of the synchronization field include one or more of: one or more base sequences in the base sequence set; a complement sequence of one or more base sequences in the base sequence set; a sequence concatenated from one or more base sequences in the base sequence set; a sequence concatenated from a complement sequence of one or more base sequences in the base sequence set; a sequence concatenated from one or more base sequences in the base sequence set and a complement sequence of one or more base sequences. The aforementioned "concatenation" can refer to a concatenation of two sequences, or a concatenation of more than two sequences, such as a concatenation of four sequences, a concatenation of eight sequences. In some implementations, candidate sequences of different lengths can correspond to different transmission parameters. For example, candidate sequences of a first length can correspond to one or more transmission parameters (such as a first data rate), candidate sequences of a second length can correspond to one or more transmission parameters (such as a second data rate), and candidate sequences of the first length and candidate sequences of the second length can correspond to different transmission parameters (such as corresponding to different data rates).

[0155] In some implementations, the correlation of the base sequences in the base sequence set can be designed such that the base sequences in the base sequence set have good correlation with themselves. The base sequences in the base sequence set having good correlation with themselves can facilitate detection, demodulation and transmission of the sequences.

[0156] In some implementations, the characteristics of the base sequences in the base sequence set can be designed, such as: a first sequence or a base sequence corresponding to the first sequence having a plurality (or more) of '10' and / or '01'; or, a first sequence or a base sequence corresponding to the first sequence having a plurality (or more) of '01' and / or '10' transitions. For example, when the length of the first sequence or the base sequence corresponding to the first sequence is 16, the first sequence or the base sequence corresponding to the first sequence can have 7 or more '10' or '01' transitions, and the 0 or 1 in the 7 or more transitions do not overlap. For another example, when the length of the first sequence or the base sequence corresponding to the first sequence is 24, the first sequence or the base sequence corresponding to the first sequence can have 7 or more '10' or '01' transitions, and the 0 or 1 in the 7 or more transitions do not overlap. Such characteristics facilitate the identification of the sequence by the amplitude transition of the synchronization field.

[0157] Further, in some implementations, the correlation of the base sequences in the base sequence set can be designed such that the sum of the correlation parameter values of the N candidate sequences corresponding to each base sequence in the base sequence set is as large as possible (such as greater than or equal to a first value). Considering the sum of the correlation parameter values of the candidate sequences when designing the sequences can enable the base sequences in the base sequence set to achieve the best compatibility.

[0158] The calculation manner of the correlation parameter value of each candidate sequence is not specifically limited in the embodiments of the present application. A possible calculation manner is given below.

[0159] In some implementations, the correlation parameter value of each candidate sequence is associated with a sliding correlation result of the candidate sequence and a second sequence corresponding to the candidate sequence, and the second sequence corresponding to the candidate sequence is associated with a base sequence corresponding to the candidate sequence. The second sequence corresponding to the candidate sequence is also sometimes referred to as a local code, which can be used by a receiving end device to perform correlation detection on the candidate sequence.

[0160] The second sequence corresponding to the candidate sequence mentioned above being associated with the base sequence corresponding to the candidate sequence can include: Ref=2×G―1 m ―1,

[0161] wherein, Ref represents the second sequence corresponding to the candidate sequence, G m represents the mth sequence in the base sequence set [G], 1≤m≤M, and G m is the base sequence corresponding to the candidate sequence.

[0162] Alternatively, the second sequence corresponding to the candidate sequence mentioned above being associated with the base sequence corresponding to the candidate sequence can include:

[0163] wherein, Ref represents the second sequence corresponding to the candidate sequence, represents the complement sequence of the mth sequence G m in the base sequence set [G], 1≤m≤M, and G m is the base sequence corresponding to the candidate sequence.

[0164] The correlation parameter value of each candidate sequence mentioned above includes a ratio of a maximum value to a second maximum value in absolute values of sliding correlation results of each candidate sequence and a second sequence corresponding to the candidate sequence.

[0165] In order to facilitate understanding, several examples of calculation manners of the correlation parameter value or the sum of correlation parameter values are given below.

[0166] Example one:

[0167] The synchronization field includes a candidate sequence, i.e., G. The second sequence (local code) Ref=2×G―1 (or ―1) corresponding to G, and the correlation parameter value AC of G can be calculated based on the following formula: Correlation=xcorr(G,Ref)

[0168] wherein xcorr(.) represents a sliding correlation function, Correlation represents a sliding correlation result of G and Ref, Max|Correlation| represents a maximum value in the absolute value of the sliding correlation result, and 2ndLargest|Correlation| represents a second largest value in the absolute value of the sliding correlation result.

[0169] In the case where the length of G is determined, all sequences in the length can be traversed, and the sequence with a larger or even the largest AC value is taken as a candidate sequence, and the obtained candidate sequence has good correlation.

[0170] Example II:

[0171] The base sequence set is [G], and the candidate sequences in the synchronization domain are and [G G] respectively. The second sequences (local codes) corresponding to the sequences and [G G] are both Ref=2xG―1 (or ), and the correlation parameter value ACH of the sequence , the correlation parameter value ACL of the sequence [G G], and the sum of the correlation parameter values ACH and ACL can be calculated based on the following formula: Correlation_L=xcorr([G G],Ref) AC=abs(ACH)+abs(AC L )

[0172] wherein xcorr(.) represents a sliding correlation function, Correlation_H represents a sliding correlation result of and Ref, Max|Correlation_H| represents a maximum value in the absolute value of Correlation_H, 2ndLargest|Correlation_H| represents a second largest value in the absolute value of Correlation_H, Correlation_L represents a sliding correlation result of [G G] and Ref, Max|Correlation_L| represents a maximum value in the absolute value of Correlation_L, and 2ndLargest|Correlation_L| represents a second largest value in the absolute value of Correlation_L.

[0173] In the case where the length of G is determined, all sequences in the length can be traversed, and the sequence with a larger or even the largest AC value is taken as a candidate sequence, and the obtained candidate sequence has good correlation, and different candidate sequences have good compatibility.

[0174] If the synchronization field includes more candidate sequences, the correlation parameter value of each candidate sequence can be calculated in a similar manner as in Example Two, and then the correlation parameter values of each candidate sequence are added so that the value of AC is as large as possible (even maximum). In this way, multiple candidate sequences with good autocorrelation can be obtained, and the compatibility between the multiple candidate sequences is also good.

[0175] The above describes in detail the correlation between the sequence in the synchronization field itself or between the candidate sequences in the synchronization field. In some implementations, the sequence in the synchronization field can have good correlation with the sequence in the PPDU sent by other types of devices, so that the receiving end device can quickly identify the signal carried by the first PPDU from a large number of wifi signals, thereby facilitating the detection, demodulation and transmission of the first PPDU.

[0176] In some implementations, the first sequence in the first PPDU has good cross-correlation with a third sequence in a second PPDU. The first PPDU can be used for the AP to communicate with the first type of device. The second PPDU can be used for the AP to communicate with the second type of device. Similar to the first PPDU, the second PPDU can also include a wideband part and a narrowband part, and the narrowband part of the second PPDU can also include a synchronization field. The third sequence mentioned above is the sequence carried in the synchronization field of the second PPDU.

[0177] The second type of device mentioned above can be, for example, a WUR-based device, and the first type of device can be a device other than WUR, such as an AMP device. Accordingly, the third sequence mentioned above can be a sequence in the synchronization field defined in 802.11ba.

[0178] The second PPDU can be a PPDU sent or received by other devices (such as a third device). Alternatively, in some implementations, the second PPDU can also be a PPDU sent or received by the first device; or the second PPDU can be a PPDU received or sent by the second device. That is, the first device and / or the second device can support the sending or receiving of two different types of PPDU at the same time.

[0179] It should be noted that the sequence in the synchronization field of the first PPDU or the base sequence associated with the sequence can meet all the conditions mentioned above, or only meet part of the conditions mentioned above. For example, the number of 0s and 1s in the first sequence can be equal, but the first bit of the first sequence can not be 1.

[0180] The following gives several possible forms of the first sequence or the base sequence corresponding to the first sequence in combination with specific embodiments.

[0181] Optionally, the length of the first sequence (or the base sequence corresponding to the first sequence) can be even, so as to ensure that the first sequence (or the base sequence corresponding to the first sequence) has equal number of 1 and 0. The equal number of 1 and 0 in the first sequence (or the base sequence corresponding to the first sequence) can make the first sequence (or the base sequence corresponding to the first sequence) have better randomness or pseudo-randomness, which makes the first sequence (or the base sequence corresponding to the first sequence) less likely to be cracked, thereby helping to improve the security of information transmission.

[0182] In some implementations, the first sequence or the base sequence corresponding to the first sequence includes P consecutive 0s or P consecutive 1s, P being a positive integer greater than or equal to 3. For example, P = 3. Further, in some implementations, the data field of the first PPDU adopts Manchester coding. When the data field of the first PPDU adopts Manchester coding, the number of consecutive 1s or consecutive 0s in the data field will not exceed 2, and at this time, the number of consecutive 0s or the number of consecutive 1s in the first sequence or the base sequence corresponding to the first sequence is set to be greater than or equal to 3, which can better distinguish the sequence of the synchronization field from the data in the data field.

[0183] In some implementations, the signal before the first sequence in the first PPDU is a signal corresponding to all 0s, or the signal before the first sequence in the first PPDU is a signal corresponding to all 1s.

[0184] In some implementations, the length of the first sequence or the base sequence corresponding to the first sequence in the synchronization field is 8. For example, the first sequence or the base sequence corresponding to the first sequence includes one or more of the following sequences (or the first sequence or the base sequence corresponding to the first sequence can form one or more of the following sequences after cyclic shift):

[0185] [01001110];

[0186] [10110001];

[0187] [11000101];

[0188] [10001101];

[0189] [01110010];

[0190] [10100011].

[0191] In some implementations, the length of the first sequence or the base sequence corresponding to the first sequence in the synchronization field is 10. For example, the first sequence or the base sequence corresponding to the first sequence includes one or more of the following sequences (or, the first sequence or the base sequence corresponding to the first sequence can form one or more of the following sequences after cyclic shifting): [0110111000], [0111001001], [1000101101], [1000110110], [1001000111], [1010010011], [1011000101], [1011010001], [1100100101], [1101000110], [1110001001].

[0192] In some implementations, the length of the first sequence or the base sequence corresponding to the first sequence in the synchronization field is 12. For example, the first sequence or the base sequence corresponding to the first sequence includes one or more of the following sequences (or, the first sequence or the base sequence corresponding to the first sequence can form one or more of the following sequences after cyclic shifting): [011100010110], [011010001110].

[0193] In some implementations, the length of the first sequence or the base sequence corresponding to the first sequence in the synchronization field is 14. For example, the first sequence or the base sequence corresponding to the first sequence includes one or more of the following sequences (or, the first sequence or the base sequence corresponding to the first sequence can form one or more of the following sequences after cyclic shift): [00011011101001], [00011101100101], [00101011100110], [00111010100110], [01000111001101], [01001011001110], [01001101011100], [01001101110010], [01010011100110], [01011001000111], [01011001001110], [01011001110010], [01011100010110], [01100011101001], [01101001000111], [01110001001011], [01110001001101], [01110010001011], [10001010110011], [10001011011100], [10001101100101], [10001110110100], [10010010111001], [10010111011000], [10011010100011], [10011010110001], [10100100011101], [10100110110001], [10110001001011], [10110010001110], [10110010100011], [10110100100011], [10111000100101], [11000100110101], [11000101010011], [11000101011001], [11000110010101], [11001001000111], [11001010001011], [11001010001110], [11001010100011], [11001101010001], [11010001000111], [11010001010011], [11010010001110], [11010010100011], [11010100110001], [11100010011010], [11100010100101], [00101110110001], [01001011101100], [01001110011010],[01011011100010]，[01100101001110]，[01100111001010]，[01100111010010]，[01110001001110]，[01110001011001]，[01110001011010]，[10010101100011]，[10011100100101]，[10100011100110]，[10100110001110]，[10100110100011]，[10101001100011]，[11000101100101]，[11000110101001]，[11100010100110]，[00100111010110]，[00101101110001]，[00101110101100]，[00110100101110]，[00110101110100]，[00110111010010]，[00110111010100]，[00111000101101]，[00111010011010]，[01000111010110]，[01000111011010]，[01001100011101]，[01001101001110]，[01011000110110]，[01011001011100]，[01011100010011]，[01011100110010]，[01100011100101]，[01100101011100]，[01100101110001]，[01100111010100]，[01101000111010]，[01101001001110]，[01101010001110]，[01101011100010]，[01101011100100]，[01101100011010]，[01101101000110]，[01110001010011]，[01110001010110]，[01110001100101]，[01110001101001]，[01110010001110]，[01110010010110]，[01110010011010]，[01110010101100]，[01110010110010]，[01110100101100]，[10001100101011]，[10001100101101]，[10001100110101]，[10001101001101]，[10001101010011], [10001101110100], [10001110100110], [10001110110010], [10010100010111], [10010111000110], [10011000101101], [10011010001110], [10100011100101], [10100100111001], [10100110001101], [10101001000111], [10101100110001], [10110001000111], [10110001001101], [10110001110010], [10110100011100], [10110100110001], [11000100101101], [11000110001011], [11001001010011], [11001010110001], [11010001001110], [11010001100011], [11010010001101], [11100010001011], [11100010001101], [11100010010011], [11100010010101], [11101000101001], [01001100111010], [01001110110010], [01001011100110],.

[0194] In some implementations, the length of the first sequence or the base sequence corresponding to the first sequence in the synchronization field is 16. For example, the first sequence or the base sequence corresponding to the first sequence includes one or more of the following sequences (or, the first sequence or the base sequence corresponding to the first sequence can form one or more of the following sequences after cyclic shift):

[0195] [1100011010001011];

[0196] [1100100101011100];

[0197] [1110001001010011];

[0198] [0011010110111000];

[0199] [0001110101101100];

[0200] [0001110110101100];

[0201] [0010111010011100];

[0202] [0011001001010111];

[0203] [0011010110100011];

[0204] [0011011010111000];

[0205] [0011101001010011];

[0206] [0011101010010011];

[0207] [1100010101101100];

[0208] [1100010110101100];

[0209] [1100100101000111];

[0210] [1100101001000111];

[0211] [1100110110101000];

[0212] [0001010110110011];

[0213] [1110001010010011];

[0214] [0011100101110100];

[0215] [1101000101100011];

[0216] [0011011010100011].

[0217] In some implementations, the length of the first sequence or the base sequence corresponding to the first sequence pair in the synchronization field is 16. For example, the first sequence or the base sequence corresponding to the first sequence pair includes one or more of the following sequences (or, the first sequence or the base sequence corresponding to the first sequence pair can form one or more of the following sequences after cyclic shifting):

[0218] [0001101100101011]，[0001101110101100]，[0001110111010010]，[0010011101011100]，[0010101100100111]，[0010111010011100]，[0011010110111000]，[0011100100101011]，[0011101000101101]，[0011101001000111]，[0011101010010011]，[0100101110111000]，[0101001001100111]，[0101001101100011]，[0101011001000111]，[0101100110001011]，[0101100111010001]，[0101101000100111]，[0101101000110011]，[0101101100100011]，[0101110001001101]，[0110001110100101]，[0110010001101011]，[0110010101100011]，[0110010110001011]，[0110100110001011]，[0110110001010011]，[0110111000101001]，[0111000100101110]，[0111001000101101]，[0111001010010011]，[0111010010001101]，[0111010010001110]，[1000101011010011]，[1000101011011001]，[1000101100011011]，[1000101101011001]，[1000101110010110]，[1000110101001101]，[1000110101011001]，[1000110101110100]，[1000111010010011]，[1001001010100111]，[1001001101010011]，[1001010001110110]，[1001010110010011]，[1001011001000111]，[1001100010010111]，[1001100101001011]，[1001101001000111]，[1001101010010011]，[1001101011010001]，[1001101101010001]，[1001110001001011]，[1001110010001011]，[1001110101001001]，[1010001001110011]，[1010001011000111]，[1010001011001110]，[1010001110010011]，[1010001110010110]，[1010010011000111]，[1010011001000111]，[1010100011001011]，[1010100110001011]，[1010100110010011]，[1010100110100011]，[1010100110110001]，[1010110001001101]，[1011000101100101]，[1011000110001011]，[1011001000111010]，[1011001010001101]，[1011001010110001]，[1011001011000101]，[1011010001000111]，[1011010001001110]，[1011010001011100]，[1100010011010011]，[1100010011011010]，[1100010101001101]，[1100010101101100]，[1100010110001101]，[1100010110010101]，[1100011001001011]，[1100011010010011]，[1100011010100110]，[1100100011010011]，[1100100100111010]，[1100100101011100]，[1100101001000111]，[1100101001001110]，[1100101001011100]，[1100101010010011]，[1100101100010011]，[1100110001001011]，[1100110001011010]，[1101000110010110]，[1101000110011010]，[1101000110101100]，[1101001000111001]，[1101001001100011]，[1101001010100011]，[1101001100010101]，[1101001101000110], [1101010001101001], [1101010010011001], [1101010011011000], [1101100011010001], [1101100100011010], [1110001000110110], [1110001001010011], [1110001001101001], [1110001001101010], [1110001010001101], [1110001010011001], [1110001011000110], [1110001100100101], [1110010001010011], [1110010001100101], [1110010001101001], [1110010001110100], [1110010010101100], [1110100100011001]..

[0219] In some implementations, the length of the first sequence or the base sequence corresponding to the first sequence in the synchronization field is 16. If the candidate sequences of the synchronization field are calculated in the manner of “Example One” mentioned above (i.e., the synchronization sequence only includes one candidate sequence), or if the candidate sequences of the synchronization field are calculated in the manner of “Example Two” mentioned above, but only the relevant parameter value AC H , the first sequence or the base sequence corresponding to the first sequence does not include the relevant parameter value AC L , the first sequence or the base sequence corresponding to the first sequence includes one or more of the following sequences (or, the first sequence or the base sequence corresponding to the first sequence can form one or more of the following sequences after cyclic shift):

[0220] [0001101100101011]，[0001101110101100]，[0001110111010010]，[0010011101011100]，[0010101100100111]，[0010111010011100]，[0011010110111000]，[0011100100101011]，[0011101000101101]，[0011101001000111]，[0011101010010011]，[0100101110111000]，[0101001001100111]，[0101001101100011]，[0101011001000111]，[0101100110001011]，[0101100111010001]，[0101101000100111]，[0101101000110011]，[0101101100100011]，[0101110001001101]，[0110001110100101]，[0110010001101011]，[0110010101100011]，[0110010110001011]，[0110100110001011]，[0110110001010011]，[0110111000101001]，[0111000100101110]，[0111001000101101]，[0111001010010011]，[0111010010001101]，[0111010010001110]，[1000101011010011]，[1000101011011001]，[1000101100011011]，[1000101101011001]，[1000101110010110]，[1000110101001101]，[1000110101011001]，[1000110101110100]，[1000111010010011]，[1001001010100111]，[1001001101010011]，[1001010001110110]，[1001010110010011]，[1001011001000111]，[1001100010010111]，[1001100101001011]，[1001101001000111]，[1001101010010011]，[1001101011010001]，[1001101101010001]，[1001110001001011]，[1001110010001011]，[1001110101001001]，[1010001001110011]，[1010001011000111]，[1010001011001110]，[1010001110010011]，[1010001110010110]，[1010010011000111]，[1010011001000111]，[1010100011001011]，[1010100110001011]，[1010100110010011]，[1010100110100011]，[1010100110110001]，[1010110001001101]，[1011000101100101]，[1011000110001011]，[1011001000111010]，[1011001010001101]，[1011001010110001]，[1011001011000101]，[1011010001000111]，[1011010001001110]，[1011010001011100]，[1100010011010011]，[1100010011011010]，[1100010101001101]，[1100010101101100]，[1100010110001101]，[1100010110010101]，[1100011001001011]，[1100011010010011]，[1100011010100110]，[1100100011010011]，[1100100100111010]，[1100100101011100]，[1100101001000111]，[1100101001001110]，[1100101001011100]，[1100101010010011]，[1100101100010011]，[1100110001001011]，[1100110001011010]，[1101000110010110]，[1101000110011010]，[1101000110101100]，[1101001000111001]，[1101001001100011]，[1101001010100011]，[1101001100010101]，[1101001101000110], [1101010001101001], [1101010010011001], [1101010011011000], [1101100011010001], [1101100100011010], [1110001000110110], [1110001001010011], [1110001001101001], [1110001001101010], [1110001010001101], [1110001010011001], [1110001011000110], [1110001100100101], [1110010001010011], [1110010001100101], [1110010001101001], [1110010001110100], [1110010010101100], [1110100100011001]..

[0221] In some implementations, the length of the first sequence or the base sequence corresponding to the first sequence in the synchronization field is 16. The first sequence or the base sequence corresponding to the first sequence includes P consecutive 0s or P consecutive 1s, where P is a positive integer greater than or equal to 3. For example, when P = 3, the first sequence or the base sequence corresponding to the first sequence includes one or more of the following sequences (or, the first sequence or the base sequence corresponding to the first sequence can form one or more of the following sequences after cyclic shift):

[0222] [0001101100101011]，[0001101110101100]，[0001110111010010]，[0010011101011100]，[0010101100100111]，[0010111010011100]，[0011010110111000]，[0011100100101011]，[0011101000101101]，[0011101001000111]，[0011101010010011]，[0100101110111000]，[0101001001100111]，[0101001101100011]，[0101011001000111]，[0101100110001011]，[0101100111010001]，[0101101000100111]，[0101101000110011]，[0101101100100011]，[0101110001001101]，[0110001110100101]，[0110010001101011]，[0110010101100011]，[0110010110001011]，[0110100110001011]，[0110110001010011]，[0110111000101001]，[0111000100101110]，[0111001000101101]，[0111001010010011]，[0111010010001101]，[0111010010001110]，[1000101011010011]，[1000101011011001]，[1000101100011011]，[1000101101011001]，[1000101110010110]，[1000110101001101]，[1000110101011001]，[1000110101110100]，[1000111010010011]，[1001001010100111]，[1001010001110110]，[1001011001000111]，[1001100010010111]，[1001101001000111]，[1001101011010001]，[1001101101010001]，[1001110001001011]，[1001110010001011]，[1001110101001001]，[1010001001110011]，[1010001011000111]，[1010001011001110]，[1010001110010011]，[1010001110010110]，[1010010011000111]，[1010011001000111]，[1010100011001011]，[1010100110001011]，[1010100110100011]，[1010100110110001]，[1010110001001101]，[1011000101100101]，[1011000110001011]，[1011001000111010]，[1011001010001101]，[1011001010110001]，[1011001011000101]，[1011010001000111]，[1011010001001110]，[1011010001011100]，[1100010011010011]，[1100010011011010]，[1100010101001101]，[1100010101101100]，[1100010110001101]，[1100010110010101]，[1100011001001011]，[1100011010010011]，[1100011010100110]，[1100100011010011]，[1100100100111010]，[1100100101011100]，[1100101001000111]，[1100101001001110]，[1100101001011100]，[1100101100010011]，[1100110001001011]，[1100110001011010]，[1101000110010110]，[1101000110011010]，[1101000110101100]，[1101001000111001]，[1101001001100011]，[1101001010100011]，[1101001100010101]，[1101001101000110]，[1101010001101001]，[1101010011011000]，[1101100011010001]，[1101100100011010]，[1110001000110110]，[1110001001010011], [1110001001101001], [1110001001101010], [1110001010001101], [1110001010011001], [1110001011000110], [1110001100100101], [1110010001010011], [1110010001100101], [1110010001101001], [1110010001110100], [1110010010101100], [1110100100011001]..

[0223] In some implementations, the length of the first sequence or the base sequence corresponding to the first sequence in the synchronization field is 16. The first sequence or the base sequence corresponding to the first sequence includes P consecutive 0s or P consecutive 1s, P being a positive integer greater than or equal to 3. Taking P = 3 as an example, the first sequence or the base sequence corresponding to the first sequence includes one or more of the following sequences (or, the first sequence or the base sequence corresponding to the first sequence can form one or more of the following sequences after cyclic shift):

[0224] [0001010110110011], [0001110101101100], [0001110110101100], [0010111010011100], [0011001001010111], [0011010110100011], [0011010110111000], [0011011010100011], [0011011010111000], [0011100101110100], [0011101001010011], [0011101010010011], [1100010101101100], [1100010110101100], [1100011010001011], [1100100101000111], [1100100101011100], [1100101001000111], [1100110110101000], [1101000101100011], [1110001001010011], [1110001010010011].

[0225] In some implementations, the length of the first sequence or the base sequence corresponding to the first sequence in the synchronization field is 16. The first bit of the first sequence or the base sequence corresponding to the first sequence is 1, and the first sequence or the base sequence corresponding to the first sequence includes one or more of the following sequences (or, the first sequence or the base sequence corresponding to the first sequence can form one or more of the following sequences after cyclic shift):

[0226] [1000101011010011]，[1000101011011001]，[1000101100011011]，[1000101101011001]，[1000101110010110]，[1000110101001101]，[1000110101011001]，[1000110101110100]，[1000111010010011]，[1001001010100111]，[1001001101010011]，[1001010001110110]，[1001010110010011]，[1001011001000111]，[1001100010010111]，[1001100101001011]，[1001101001000111]，[1001101010010011]，[1001101011010001]，[1001101101010001]，[1001110001001011]，[1001110010001011]，[1001110101001001]，[1010001001110011]，[1010001011000111]，[1010001011001110]，[1010001110010011]，[1010001110010110]，[1010010011000111]，[1010011001000111]，[1010100011001011]，[1010100110001011]，[1010100110010011]，[1010100110100011]，[1010100110110001]，[1010110001001101]，[1011000101100101]，[1011000110001011]，[1011001000111010]，[1011001010001101]，[1011001010110001]，[1011001011000101]，[1011010001000111]，[1011010001001110]，[1011010001011100]，[1100010011010011]，[1100010011011010]，[1100010101001101]，[1100010101101100]，[1100010110001101]，[1100010110010101]，[1100011001001011]，[1100011010010011], [1100011010100110], [1100100011010011], [1100100100111010], [1100100101011100], [1100101001000111], [1100101001001110], [1100101001011100], [1100101010010011], [1100101100010011], [1100110001001011], [1100110001011010], [1101000110010110], [1101000110011010], [1101000110101100], [1101001000111001], [1101001001100011], [1101001010100011], [1101001100010101], [1101001101000110], [1101010001101001], [1101010010011001], [1101010011011000], [1101100011010001], [1101100100011010], [1110001000110110], [1110001001010011], [1110001001101001], [1110001001101010], [1110001010001101], [1110001010011001], [1110001011000110], [1110001100100101], [1110010001010011], [1110010001100101], [1110010001101001], [1110010001110100], [1110010010101100], [1110100100011001],.

[0227] In some implementations, the length of the first sequence or the base sequence corresponding to the first sequence in the synchronization field is 16. If the first bit of the first sequence or the base sequence corresponding to the first sequence is 1, then the first sequence or the base sequence corresponding to the first sequence includes one or more of the following sequences (or, the first sequence or the base sequence corresponding to the first sequence can form one or more of the following sequences after cyclic shift):

[0228] [1100010101101100], [1100010110101100], [1100011010001011], [1100100101000111], [1100100101011100], [1100101001000111], [1100110110101000], [1101000101100011], [1110001001010011], [1110001010010011].

[0229] In some implementations, the length of the first sequence or the base sequence corresponding to the first sequence in the synchronization field is 16, and the first bit of the first sequence or the base sequence corresponding to the first sequence is 1. The first sequence or the base sequence corresponding to the first sequence includes P consecutive 0s or P consecutive 1s, P being a positive integer greater than or equal to 3. Taking P = 3 as an example, the first sequence or the base sequence corresponding to the first sequence includes one or more of the following sequences (or, the first sequence or the base sequence corresponding to the first sequence can form one or more of the following sequences after cyclic shift):

[0230] [1000101011010011]，[1000101011011001]，[1000101100011011]，[1000101101011001]，[1000101110010110]，[1000110101001101]，[1000110101011001]，[1000110101110100]，[1000111010010011]，[1001001010100111]，[1001001101010011]，[1001010001110110]，[1001010110010011]，[1001011001000111]，[1001100010010111]，[1001100101001011]，[1001101001000111]，[1001101010010011]，[1001101011010001]，[1001101101010001]，[1001110001001011]，[1001110010001011]，[1001110101001001]，[1010001001110011]，[1010001011000111]，[1010001011001110]，[1010001110010011]，[1010001110010110]，[1010010011000111]，[1010011001000111]，[1010100011001011]，[1010100110001011]，[1010100110010011]，[1010100110100011]，[1010100110110001]，[1010110001001101]，[1011000101100101]，[1011000110001011]，[1011001000111010]，[1011001010001101]，[1011001010110001]，[1011001011000101]，[1011010001000111]，[1011010001001110]，[1011010001011100]，[1100010011010011]，[1100010011011010]，[1100010101001101]，[1100010101101100]，[1100010110001101]，[1100010110010101]，[1100011001001011]，[1100011010010011], [1100011010100110], [1100100011010011], [1100100100111010], [1100100101011100], [1100101001000111], [1100101001001110], [1100101001011100], [1100101010010011], [1100101100010011], [1100110001001011], [1100110001011010], [1101000110010110], [1101000110011010], [1101000110101100], [1101001000111001], [1101001001100011], [1101001010100011], [1101001100010101], [1101001101000110], [1101010001101001], [1101010010011001], [1101010011011000], [1101100011010001], [1101100100011010], [1110001000110110], [1110001001010011], [1110001001101001], [1110001001101010], [1110001010001101], [1110001010011001], [1110001011000110],.

[0231] In some implementations, the first sequence in the synchronization field or the base sequence corresponding to the first sequence has a length of 16, and a first bit of the first sequence or the base sequence corresponding to the first sequence is 1. The first sequence or the base sequence corresponding to the first sequence includes P consecutive 0s or P consecutive 1s, where P is a positive integer greater than or equal to 3. For example, when P = 3, the first sequence or the base sequence corresponding to the first sequence includes one or more of the following sequences (or the first sequence or the base sequence corresponding to the first sequence can form one or more of the following sequences after cyclic shift):

[0232] [1100010101101100], [1100010110101100], [1100011010001011], [1100100101000111], [1100100101011100], [1100101001000111], [1100110110101000], [1101000101100011], [1110001001010011], [1110001010010011].

[0233] In some implementations, the length of the first sequence or the base sequence corresponding to the first sequence in the synchronization field is 16, and the first sequence or the base sequence corresponding to the first sequence includes one or more of the following sequences (or, the first sequence or the base sequence corresponding to the first sequence can form one or more of the following sequences after cyclic shift):

[0234] [1101000101100011], [1100100101011100], [1100011010001011], [1100010110101100], [1100010101101100], [0011101010010011], [0011101001010011], [0011100101110100], [0011011010100011], [0011010110100011], [0010111010011100].

[0235] In some implementations, the length of the first sequence or the base sequence corresponding to the first sequence in the synchronization field is 16, and in the first PPDU, the signal corresponding to the signal of 1 before the first sequence. In this case, the first sequence or the base sequence corresponding to the first sequence includes one or more of the following sequences (or, the first sequence or the base sequence corresponding to the first sequence can form one or more of the following sequences after cyclic shift):

[0236] [1101000101100011], [1100100101011100], [1100011010001011], [1100010110101100], [1100010101101100], [0011101010010011], [0011101001010011], [0011100101110100], [0011011010100011], [0011010110100011], [0010111010011100].

[0237] In some implementations, the length of the first sequence or the base sequence corresponding to the first sequence in the synchronization field is 16, and there are more '01' or '10' transitions in the first sequence or the base sequence corresponding to the first sequence, so as to facilitate the identification of the sequence by using the transition of the signal amplitude. In this case, the first sequence or the base sequence corresponding to the first sequence includes one or more of the following sequences (or, the first sequence or the base sequence corresponding to the first sequence can form one or more of the following sequences after cyclic shift):

[0238] [0110010010101110],

[0239] [1001101101010001],

[0240] [0100111010011010],

[0241] [0101100111010001],

[0242] [0101110001101001],

[0243] [0101110100110001],

[0244] [0110001110100101],

[0245] [0110010101100011],

[0246] [0111001010110010],

[0247] [0111010001101001],

[0248] [0111010100101100],

[0249] [1000101011010011],

[0250] [1000101110010110],

[0251] [1000110101001101],

[0252] [1001101010011100],

[0253] [1001110001011010],

[0254] [1010001011001110],

[0255] [1010001110010110],

[0256] [1010011000101110]，

[0257] [1011000101100101]，

[0258] [0010101100110110]，

[0259] [0010101101100110]，

[0260] [0010101110010110]，

[0261] [0010110010111001]，

[0262] [0010110011100101]，

[0263] [0010110011101010]，

[0264] [0010111001011001]，

[0265] [0010111001100101]，

[0266] [0010111001101001]，

[0267] [0010111001101010]，

[0268] [0011001110100101]，

[0269] [0011001110101001]，

[0270] [0011010010101110]，

[0271] [0011010101100110]，

[0272] [0011011001010110]，

[0273] [0011011010100110]，

[0274] [0011100101011001]，

[0275] [0011101001011001]，

[0276] [0011101001100101]，

[0277] [0011101001101010]，

[0278] [0100101011100110]，

[0279] [0100101100111010]，

[0280] [0100110100111010]，

[0281] [0100110101001110]，

[0282] [0100111001101010]，

[0283] [0101001100111010]，

[0284] [0101011001001110]，

[0285] [0101011001011100]，

[0286] [0101011001101100]，

[0287] [0101011001110010]，

[0288] [0101011001110100]，

[0289] [0101011011000110]，

[0290] [0101011011001100]，

[0291] [0101011100100110]，

[0292] [0101011100110100]，

[0293] [0101100110001011]，

[0294] [0101100110100011]，

[0295] [0101101000110011]，

[0296] [0101101101000110]，

[0297] [0101110010110010]，

[0298] [0101110011001010]，

[0299] [0101110011010010]，

[0300] [0110001010110110]，

[0301] [0110001011001011]，

[0302] [0110001011101001]，

[0303] [0110010100101110]，

[0304] [0110010101101100]，

[0305] [0110010110001011]，

[0306] [0110010110100011]，

[0307] [0110011010101100]，

[0308] [0110011010110100]，

[0309] [0110011011010100]，

[0310] [0110100101011100]，

[0311] [0110100110001011]，

[0312] [0110100111010100]，

[0313] [0110101001101100]，

[0314] [0110110010101100]，

[0315] [0110110011010100]，

[0316] [0110110101000110]，

[0317] [0111001001101010]，

[0318] [0111001010100110]，

[0319] [0111001101000101]，

[0320] [0111010001100101]，

[0321] [0111010010100110]，

[0322] [0111010011010100]，

[0323] [0111010100100110]，

[0324] [1000101011011001]，

[0325] [1000101100101011]，

[0326] [1000101101011001]，

[0327] [1000101110011010]，

[0328] [1000110010111010]，

[0329] [1000110101011001]，

[0330] [1000110110010101]，

[0331] [1001001010111001]，

[0332] [1001001100101011]，

[0333] [1001001101010011]，

[0334] [1001010110010011]，

[0335] [1001011000101011]，

[0336] [1001011001110100]，

[0337] [1001011010100011]，

[0338] [1001100100101011]，

[0339] [1001100101001011]，

[0340] [1001100101010011]，

[0341] [1001101001011100]，

[0342] [1001101001110100]，

[0343] [1001101010010011]，

[0344] [1001101011010001]，

[0345] [1001110100010110]，

[0346] [1001110100110100]，

[0347] [1001110101001001]，

[0348] [1010001100101101]，

[0349] [1010001100110101]，

[0350] [1010001101001101]，

[0351] [1010010010111001]，

[0352] [1010010111001100]，

[0353] [1010011001011100]，

[0354] [1010011001110100]，

[0355] [1010100011001011]，

[0356] [1010100011011001]，

[0357] [1010100100110011]，

[0358] [1010100100111001]，

[0359] [1010100110001011]，

[0360] [1010100110001101]，

[0361] [1010100110010011]，

[0362] [1010100110100011]，

[0363] [1010100110110001]，

[0364] [1010110011000101]，

[0365] [1011000110010101]，

[0366] [1011001010110001]，

[0367] [1011001011000101]，

[0368] [1011010011000101]，

[0369] [1011010100011001]，

[0370] [1100010110010101]，

[0371] [1100010110011010]，

[0372] [1100010110100110]，

[0373] [1100011010100110]，

[0374] [1100100101011001]，

[0375] [1100100110101001]，

[0376] [1100101010011001]，

[0377] [1100101101010001]，

[0378] [1100110001010110]，

[0379] [1100110001011010]，

[0380] [1101000110010101]，

[0381] [1101000110010110]，

[0382] [1101000110011010]，

[0383] [1101000110100110]，

[0384] [1101001100010101]，

[0385] [1101001100011010]，

[0386] [1101001101000110]，

[0387] [1101010001101001]，

[0388] [1101010010011001]，

[0389] [1101010011001001]，

[0390] [0010101100101110]，

[0391] [0011010100110110]，

[0392] [0011011001101010]，

[0393] [0101001100101110]，

[0394] [0101100011001011]，

[0395] [0101101000111001]，

[0396] [0110010110101100]，

[0397] [0110011101010010]，

[0398] [0110101000110011]，

[0399] [0111010011001010]，

[0400] [1000101100110101]，

[0401] [1001010111001100]，

[0402] [1001100010101101]，

[0403] [1001101001010011]，

[0404] [1010010111000110]，

[0405] [1010011100110100]，

[0406] [1010110011010001]，

[0407] [1100100110010101]，

[0408] [1100101011001001]，

[0409] [1101010011010001]，

[0410] [0010110101100110]，

[0411] [0011001101101010]，

[0412] [0011101010010110]，

[0413] [0101001011100110]，

[0414] [0101100101110010]，

[0415] [0101101000111010]，

[0416] [0101110001011010]，

[0417] [0110001011011010]，

[0418] [0110001101101010]，

[0419] [0110010011101010]，

[0420] [0110010101001110]，

[0421] [0110011101001010]，

[0422] [0110100010111001]，

[0423] [0110100111000101]，

[0424] [0110100111010001]，

[0425] [0110101011001100]，

[0426] [1001010100110011]，

[0427] [1001011000101110]，

[0428] [1001011000111010]，

[0429] [1001011101000110]，

[0430] [1001100010110101]，

[0431] [1001101010110001]，

[0432] [1001101100010101]，

[0433] [1001110010010101]，

[0434] [1001110100100101]，

[0435] [1010001110100101]，

[0436] [1010010111000101]，

[0437] [1010011010001101]，

[0438] [1010110100011001]，

[0439] [1100010101101001]，

[0440] [1100110010010101]，

[0441] [1101001010011001]，

[0442] [0011001101010110]，

[0443] [0011010110100110]，

[0444] [1100101001011001]，

[0445] [1100110010101001]。

[0446] In some implementations, the length of the first sequence or the base sequence corresponding to the first sequence in the synchronization field is 18. For example, the first sequence or the base sequence corresponding to the first sequence includes one or more of the following sequences (or, the first sequence or the base sequence corresponding to the first sequence can form one or more of the following sequences after cyclic shift): [011001010110111000], [100110101001000111], [111000100101011001], [000111011010100110], [101001011100010011], [000101110110101100], [000110110111010100], [000111001101101010], [000111010110110010], [000111011011001010], [000111011100101100], [001101001110111000], [001101011000101110], [001101011011101000], [001110010010111010], [010010010111001110], [010010011100111010], [010011011100011010], [010100110110111000], [010101101100111000], [010110110001000111], [010110110010001110], [010111010010011100], [011001011010001110], [011001110001011010], [011011000101011100], [011011010001001110], [011100010011011010], [011100010011101001], [011100010101101100], [011100010110100110], [011100011010001011], [011100011100100101], [011100101000101110], [011100111010010010], [011101000110101100], [011101001001011100], [100010111001010011], [100011100100110101], [100100101011100011], [100101110100110001], [100110001110100101], [100110011010001011], [100110101001011100], [100111011010010010], [101001011100010011], [101001101011100011], [101101011100100101], [101101101011100011], [101110011010001011], [101110101001011100], [101111011010010010], [110010111001010011], [110011100100110101], [110100101011100011], [110101110100110001], [110110001110100101], [110110011010001011], [110110101001011100], [110111011010010010], [111001011010001110], [111001110001011010], [111011000101011100], [111011010001001110], [111100010011011010], [111100010011101001], [111100010101101100], [111100010110100110], [111100011010001011], [111100011100100101], [111100101000101110], [111100111010010010], [111101000110101100], [111101001001011100], [111110011010001011], [111110101001011100], [111111011010010010], [111111011010010010], [111111011010010010], [111111011010010010], [111111011010010010], [111111011010010010], [111111011010010010], [111111011010010010], [111111011010010010], [111111011010010010], [111111011010010010], [111111011010010010], [111111011010010010], [111111011010010010], [111111011010010010], [111111011010010010], [111111011010010010], [111111011010010010], [111111011010010010], [111111011010010010], [111111011010010010], [111111011010010010], [111111011010010010], [111111011010010010], [111111011010010010], [111111011010010010], [111111011010010010], [111111011010010010], [111111011010010010], [111111011010010010], [111111011010010[100111001010001011]，[100111010001001011]，[101000111001100101]，[101001001101110001]，[101001001110100011]，[101001011001000111]，[101001011100011001]，[101001110001001101]，[101010001101100011]，[101010010011100011]，[101100100011100101]，[110001010110100011]，[110001011010100011]，[110001100100101011]，[110001101000101101]，[110001101010010011]，[110001101100010101]，[110001101101000101]，[110001110010010101]，[110010001011010011]，[110010001110100101]，[110010010101110001]，[110010110001000111]，[110100011010010011]，[110100101000100111]，[110101000101100011]，[110101001001100011]，[110101001001110001]，[111000100010110101]，[111000100010110110]，[111000100011011010]，[111000100101001101]，[111000100110100101]，[111000101001001101]，[111000101010010011]，[111000101100101001]，[111000110010010101]，[111001000101001011]，[111010001001010011]，[111010010010001110]，[001101011010001110]，[001101101010001110]，[001110001010110110]，[001110101000110110]，[010001110011011010]，[010100110110001110]，[011000110100101110]，[011000110101110100]，[011001101011100010]，[011010001101110001]，[011011000111001010]，[011011010001000111]，[011011010100011100]，[011100010010010111]，[011100011011000101]，[011100100010110110]，[011101000101001110]，[011101001010001110]，[100010110110001101]，[100011100100101011]，[100011101010010011]，[100011101100010110]，[100011101100100101]，[100100111000110101]，[100100111010100011]，[100101001110001011]，[100111011001010001]，[101000101101100011]，[101000110001101101]，[101001011100110001]，[101011000111001001]，[101011001001000111]，[101101100011000101]，[101101101000110001]，[101110001100100101]，[110001010010110011]，[110001010111001001]，[110001101000101011]，[110001101010001011]，[110001110101001001]，[110010100100010111]，[110010100110001011]，[110011010010100011]，[110100010010100111]，[110100010011100011]，[110100010100111001]，[110100010101100011]，[110100110001000111]，[110101000111001001]，[110110010010100011]，[111000100010101101]，[111000100011010011]，[111000100100110101]，[111000101001011001]，[111000110010001011]，[111001010010001011]，[000110110101110100]，[000110111010110100]，[001010110110011100]，[001010111000110110]，[001010111011011000]，[001011010111011000]，[001011101011000110]，[001011101011011000]，[001110011011010100]，[001110100011010110]，[001110100100101110]，[010001110101100110]，[010011011010111000]，[010100111000110110]，[010110001110110010]，[010110011010001110]，[010110110011100010]，[011000111010001101]，[011001010110001110]，[011001110001010110]，[011010001011001110]，[011010001110001011]，[011010001110110001]，[011010100011100110]，[011010110001011100]，[011010111000100110]，[011011000111010100]，[011011100011000101]，[011100010100101110]，[011100010110101100]，[011100011011001010]，[011100100100101110]，[011101000110001101]，[011101001001001110]，[011101001011000110]，[100010100110111001]，[100010100111011001]，[100011000101101101]，[100011001011101001]，[100011001110100101]，[100011011100010110]，[100011100101001101]，[100011101001100101]，[100100101011000111]，[100100111000101011]，[100101001100010111]，[100101001101000111]，[100101001110100011]，[100101110010001110]，[100110111000101001]，[100110111001010001]，[101000110001110110]，[101000110011100101]，[101000110100100111]，[101000110110001110]，[101001001110001110]，[101001100101110001]，[101001100111000101]，[101001101001000111]，[101001110001100101]，[101001110011000101]，[101010001110010011]，[101010010011000111]，[101011010001000111]，[101100010111000110]，[101100011000101110]，[101100011010001011]，[101100011011010001]，[101100011100010110]，[101100100101000111]，[101100101001000111]，[101100101001110001]，[101101000100011011]，[101101000100011101]，[101101000100111001]，[101101000101100011]，[101101010001000111]，[101110001001001011]，[110001000111010011]，[110001001011001011]，[110001001101001011]，[110001010110001101]，[110001011100100101]，[110001011100101001]，[110001110010001011]，[110010001110001011]，[110010010101100011]，[110010010110001011]，[110010011100010101]，[110010100010111001]，[110010100110100011]，[110010100111010001]，[110010101001000111]，[110010110100010011]，[110100010011000111]，[110100010100100111]，[110100010110001101]，[110100011001010011]，[110100011100010011]，[110100100010111001]，[110100100011100011]，[110100100100011101]，[110100101100100011]，[110100110100100011]，[110101000100100111]，[111000100011001011]，[111000100101010011]，[111000100101100101]，[111001001000101011]，[111001001010001011]，[111001001011000101]，[111010001100101001]，[011100010110011010]，[100111010001010011]，[101001001110001101]，[101001100011100101]，[101011001001110001]，[101100011100100101]，[101110001000101101]，[110001010010011011]，[110001110001001011]，[110010001101001011]，[110010111000100011]，[110100010110001110]，[110100011100010110]，[110100011100101001]，[110100101100010011]，[110110001000101101]，[011100011010100110]，[011100110100010110]，[110001011001010011]。，

[0447] In some implementations, the length of the first sequence or the base sequence corresponding to the first sequence pair in the synchronization field is 20. For example, the first sequence or the base sequence corresponding to the first sequence pair includes one or more of the following sequences (or, the first sequence or the base sequence corresponding to the first sequence pair can form one or more of the following sequences after cyclic shift): [00101101011100010011], [01101011010001000111], [11000111010001001011], [00110111000101001011], [11001000111010110100], [11001011010001000111], [00011011011000101011], [00011101110100101001], [00011101110100101100], [00101011100100100111], [00101101110001011100], [00101101110100011100], [00110100101110111000], [00111010001110110100], [10010100101110111000], [11000101110001001011], [11010010001011100011], [11010010001110100011], [11010010100011101100], [11010100011011011000], [11100010001011010011], [11100010001011010110], [11100100100111010100].

[0448] In some implementations, the length of the first sequence or the base sequence corresponding to the first sequence in the synchronization field is 22. For example, the first sequence or the base sequence corresponding to the first sequence includes one or more of the following sequences (or, the first sequence or the base sequence corresponding to the first sequence can form one or more of the following sequences after cyclic shift): [0011010010101110111000], [0011101101001000101110], [0011101110100011010010], [0100101100010111011100], [0100101110100011001110], [0101001001101110001110], [0101100101110010001110], [0110001001110101110100], [0110100111000100010111], [0110110001110001010110], [0111000100010111001011], [0111000100111010011010], [0111000100111010110100], [0111000101001011101100], [0111000111010001001011], [0111000111011001001010], [0111010001100010110110], [1000110111001010001011], [1000110111001101000101], [1000111010010100011011], [1001010111000100100111], [1001011011000101000111], [1001110001011100100101], [1001110110100010100011], [1010110100010011000111], [1010110110010001110001], [1011000100101011100011], [1011010001100111000101], [1011010011101000100011], [1011010100010011000111], [1011100010010110001011], [1100010001011100101101], [1100011001011010001011], [1100011101010010001101], [1100100101010001110011],[1100101100011010100011]，[1100101101010001000111]，[1100110001011010001011]，[1101001000101011100011]，[1101001000111000101110]，[1101010010010011000111]，[1110001000101011010011]，[1110001010001101101001]，[1110001011000101001101]，[1110001011001010001101]，[1110001101010001001101]，[1110001110010010010101]，[1110010010011000101011]，[1110011000101101000101]，[1110100010001110010110]，[0001011101110010110100]，[0001110111010100101100]，[0010110100111011101000]，[0010110101110010001110]，[0010111001011011100010]，[0010111010110001001110]，[0010111010111001000110]，[0011011100010100101110]，[0011100101101000101110]，[0100011101101001110100]，[0100110100011101110010]，[0100111011100010110010]，[0101110001000110110110]，[0110001010111000110110]，[0110001011100011010110]，[0110010010101110001110]，[0110100100010111011100]，[0110100101110010001110]，[0110101110001000110110]，[0110110001110101000110]，[0110110100011000101110]，[0111000100111010010110]，[0111000101100101001110]，[0111000111010100100110]，[0111001000111000101101]，[0111001100010111010010]，[0111010001001011011100]，[0111010001110001001011]，[0111010010010001101110]，[0111011000100100101110]，[1000101110011101001001]，[1000110011101000101101]，[1000111000100110110101]，[1000111010001001011011]，[1000111010010001101011]，[1000111011101000110100]，[1001001011100111010001]，[1001001110011101000101]，[1001110100100101000111]，[1010001001110011100101]，[1010001010011100100111]，[1010001011010001100111]，[1010001101100111000101]，[1010001101110001100101]，[1010001110010100100111]，[1010001110011000101101]，[1010001110011011000101]，[1010011000111011000101]，[1010100100100111000111]，[1010110001110001001101]，[1010110010001011000111]，[1011000100011101001101]，[1011000111001000101110]，[1011001000101011000111]，[1011001000110101000111]，[1011001000111000110101]，[1011001010001101000111]，[1011001010110001000111]，[1011001110001000101101]，[1011010001011100011001]，[1011010001011100110001]，[1011010011000100010111]，[1011010011100010001011]，[1100010011010110100011]，[1100010011101001001011]，[1100010101100011010011]，[1100010110010100011011]，[1100010110011010100011]，[1100011000101011001011]，[1100011001010110001011]，[1100011010001001011011]，[1100011010100010110011]，[1100011011010010001011]，[1100011100100100101011]，[1100011101000100101101]，[1100011101010001001011]，[1100100100011101010011]，[1100100110100101000111]，[1100101010010011100011]，[1101000101001110010011]，[1101000110100100011101]，[1101000110101001100011]，[1101000111000100100111]，[1101001000100111000111]，[1101001000101110001110]，[1101001010001100100111]，[1101001101010001100011]，[1101001110100010001110]，[1101010001100100100111]，[1101010010010011100011]，[1101100010100101110001]，[1101100010100110100011]，[1101101001000101110001]，[1110001000110101001101]，[1110001001100101001011]，[1110001001101000110101]，[1110001010010010111001]，[1110001010010110010011]，[1110001010110001001101]，[1110001100100100101011]，[1110001110010001001011]，[1110010001011001010011]，[1110010010001110001011]，[1110010010001110101001]，[1110010011000101001011]，[1110010011100101000101]，[1110010100110010001011]，[1110100010001100101101]，[0010110001011101110001]，[0011011101001010001110]，[0011101110100010010110]，[0110001011011010001110]，[0110101000111000110110]，[0110101100011101000110]，[0110110001000111010110]，[0110110001010111000110]，[0110110110001000111010]，[0111000101101101000110]，[0111001000110101110100]，[0111010001001110001101]，[0111010001100101001110]，[0111010010100011101100]，[1000101110011100100101]，[1001001110010100010111]，[1001100011101000101101]，[1010001011001110110001]，[1010001011100111001001]，[1010010011100111010001]，[1010011100111001000101]，[1011001000111000101101]，[1011001011100010001101]，[1011010001000111001101]，[1011010001110001001101]，[1011010001110001001110]，[1011010010001011100011]，[1011100010010001011011]，[1100010100010110111001]，[1100010101100110100011]，[1100010110101100100011]，[1100011100100101010011]，[1100011101010010010011]，[1100100011100101010011]，[1100100100101011000111]，[1100100100101011100011]，[1100100111001010001011]，[1100101001101000100111]，[1100101010011100010011]，[1100101011100010010011]，[1100101100101001000111]，[1100111000101010010011]，[1101000100101101100011]，[1101000100110010100111]，[1101000101001110110001]，[1101000101101000110011]，[1101000101101001100011]，[1101001001011100100011]，[1101001010011001000111]，[1101001011100010001101]，[1101011000100101110001]，[1101101000100100011101]，[1110001001010011010011]，[1110001100100010101101]，[1110001100100010110101]，[1110001101000100110101]，[1110010010100111000101]，[1110100010100111001001]，[1010010011101000111001]，[1011000100011101001011]，[1101101001000101100011]。，

[0449] In some implementations, the length of the first sequence or the base sequence corresponding to the first sequence in the synchronization field is 24. For example, the first sequence or the base sequence corresponding to the first sequence includes one or more of the following sequences (or, the first sequence or the base sequence corresponding to the first sequence can form one or more of the following sequences after cyclic shift): [000110110001011010111010], [000110110011100101101010], [001011011100111010001010], [001101101011010001000111], [001110111001010100110100], [011010100011100010011011], [011100010111001000101101], [100010111010010100111001], [100011000101110110110100], [100011101000110111010010], [100011101100100100101011], [100100101110001100010111], [100101100011011000101011], [100110100110101001000111], [100111001010010111010001], [101001010111000110010011], [101011101001000110110001], [101101001000110001011101], [101101001110010001000111], [110001000110101011001011], [110001010100111010010011], [110001110010001010110110], [110010001011100011010110], [110010010100101110111000], [110100100011011000111010], [110100100100010111001110], [110101000110110001101001], [110101001001001101110001], [110110100100011000101110], [111000101001010011011001], [111001000100011101001011], [111001001110100101000101], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110111010100101100], [000101110[000110011011101010010110]，[000110110011100101010110]，[001001101110001110100101]，[001001110010110001010111]，[001001110111000111010010]，[001100101110101101011000]，[001110001001101101011010]，[001110001001101101101010]，[001110010011101101000101]，[010100101110001110110010]，[010100110001101101110100]，[010100111000101110110010]，[010101101101100100011100]，[010110011100100100010111]，[010110100011100010011011]，[010110100011101000100111]，[010110101001101100111000]，[010110101110001000100111]，[010111000110110001001011]，[010111010010001101100011]，[011000110101101000101110]，[011001100101110101101000]，[011010010101110110011000]，[011010010110001011101100]，[011010011101000100011011]，[011011000110100111010100]，[011011010100010011100011]，[011100111010001001001011]，[100100101110010101000111]，[100100111011010001010011]，[100101001100101110001011]，[100101010001110100100111]，[100101100010111000100111]，[100110010010110101000111]，[101000111001001110110100]，[101001010110010011000111]，[101001011100011101100100]，[101001100011011011101000]，[101010001101001110010011]，[101010010010011011100011]，[101010010110010011000111]，[101011000101100100011101]，[101011010011000100010111]，[101100100010111000110101]，[101100110010100101000111]，[101101000111000100011011]，[101101001000101110110001]，[101101001000111010001101]，[101110001001101000110101]，[101110100011000100101101]，[110001110110010010010101]，[110010101000111010010011]，[110011010001010010100111]，[110100010100101110010011]，[110100011101001100101001]，[110100101011001000111001]，[110100101110001000100111]，[110110001000110100110101]，[110110001000111000101101]，[110110010001110001011010]，[111000101001010011001101]，[111000101011010010011001]，[111000101011010011001001]，[111000110010011010010101]，[111001000111010001101001]，[111001001001100011010101]，[111001001011000101010011]，[111001001011100010101001]，[111001100100010101101001]，[111010001100011101001001]，[111010010100010110011001]，[000101101011101001100110]，[000101110100110011100101]，[000101110101101001100110]，[000101110110110001100101]，[000101110111001101001010]，[000110101101011101001100]，[000110110100011101010110]，[000110110110011100101010]，[000110111000101110010110]，[000110111001010110010110]，[000110111010001110100101]，[000110111010011010100110]，[000110111011100010100101]，[000110111011100010110100]，[000111001101100101011010]，[000111001101100101101010]，[000111010100101100110110]，[000111010100101101100110]，[000111010101100010110110]，[000111010110011010110100]，[000111010110101100100110]，[000111011101001010010011]，[000111011101100011010010]，[000111011101100101001010]，[001001011011100111010001]，[001001101110001110101001]，[001001110111001011001010]，[001001110111010001101001]，[001010111001001110010110]，[001010111011001011000110]，[001011001010100111011100]，[001011010001110111011000]，[001011010100110111000110]，[001011010110011010111000]，[001011011101100011001010]，[001011100010110011010110]，[001011101001010011100110]，[001011101001100111001010]，[001101001010111011101000]，[001101010111000101101100]，[001101010111001011011000]，[001101011101001000110110]，[001101100010110101110100]，[001101100011010011101010]，[001101100111000101011010]，[001101101000110101011100]，[001101101000111010101100]，[001101110011010001011010]，[001101110100011010010110]，[001101110100011100101001]，[001110001101110101001001]，[001110101011000101101100]，[010001011100111011010010]，[010001110110010111001010]，[010010101110001110110010]，[010010110001101110111000]，[010010110111000101110010]，[010010110111001110100010]，[010010110111010001001110]，[010010111000111011100100]，[010011001101011010111000]，[010011011100011101001010]，[010011100111010001011010]，[010011101000111011010010]，[010100010110111001001110]，[010100010111001110110100]，[010100101001101110111000]，[010100101100111011101000]，[010100110001101110110100]，[010100110100111011100100]，[010101001110011011011000]，[010101101001101100111000]，[010110001100110100010111]，[010110010110001000110111]，[010110100010110011101100]，[010110101000111001101100]，[010110101101100100011100]，[010111010110100011011000]，[011000110100110111010100]，[011000111011001010110100]，[011001001101011010111000]，[011001010110010111011000]，[011001011001010110111000]，[011001100101101011101000]，[011001101101001010111000]，[011001110010100101110100]，[011010011010100111011000]，[011010011100100111010100]，[011010101001110011011000]，[011010101110001011011000]，[011010110001110100010011]，[011010110011010001110100]，[011011000100101110101100]，[011011001101001010111000]，[011011010001101010111000]，[011011010001110011101000]，[011100010011011011010100]，[011100100010111011010010]，[011100100111011010001010]，[011101000101101011000110]，[011101000110001001011011]，[100010111001110110100100]，[100011011000100101110101]，[100011011101000100101101]，[100100101011101100011100]，[100100110010110101000111]，[100100111001011000101011]，[100101001110001011101100]，[100101010110001100100111]，[100101011100011101100100]，[100101100010111011100100]，[100101100101011000100111]，[100101101001110100010011]，[100101101010001001100111]，[100110001101011010001011]，[100110011010010100010111]，[100110101001101000100111]，[100110110010100101000111]，[100111000100110101001011]，[100111001001101000101011]，[100111001011001000101011]，[101000101001011100100111]，[101000101101110010011100]，[101001010001110111011000]，[101001010010011011100011]，[101001011100010111011000]，[101001011101000110001101]，[101001011101001100010011]，[101001100011011101101000]，[101001101001110111001000]，[101010110001100100100111]，[101011000110011010001011]，[101011000111010001001101]，[101011001011000100011011]，[101011001110010001001011]，[101011001110010010001011]，[101011010001110001001101]，[101011010110010001000111]，[101011101000110001001011]，[101100010111000100101101]，[101100011000101110100101]，[101100100011100010101101]，[101101000100111010001110]，[101101010001110001001101]，[110001101100010010111010]，[110010001011100101101001]，[110010010111000101010011]，[110010010111001010100011]，[110010011000111010100101]，[110010011100101100010101]，[110010011101001010001011]，[110010100010110111001001]，[110010101000110100100111]，[110010110101000100010111]，[110100010010011100110101]，[110100010110011000110101]，[110100010110101100011001]，[110100100010011100110101]，[110100100011000101110101]，[110100101001100101000111]，[110100110101011000100011]，[110101000100110100111001]，[110101000101100100111001]，[110101000110100111001001]，[110110001000101110010110]，[110110001101001110101000]，[110110010001110001010110]，[111000100010011010110101]，[111000100010011100101101]，[111000100101011001011001]，[111000101001100101001011]，[111001000100011101011010]，[111001000101100101011001]，[111001000101110001011010]，[111001000110101001101001]，[111001001100011010010101]，[111001001100011010101001]，[111001010010100010110011]，[111010001000101011010011]，[111010001000110010110101]，[111010001001001110011010]，[111010001010010110011001]，[111010001011001100011010]，[111010010001001110011010]，[111010100011010011100100]，[111011000100011010011010]，[000101011100101100011011]，[000101101110110001100101]，[000110110100111010101100]，[000111011010100110100110]，[001010110110110010001110]，[001011011011101000110001]，[001011011100100111000101]，[001011101011010001101100]，[010011011101000111001010]，[010101101001110011011000]，[010110100010111001110010]，[011000110110010111010100]，[011010011101000111011000]，[101010010110001100100111]，[110001110110010010100101]，[111000110010011010100101]，[010100111001100101110100]，[100110011010001010010111]，[101001110011001011101000]。，

[0450] In some implementations, the length of the first sequence or the base sequence corresponding to the first sequence in the synchronization field is 26. For example, the first sequence or the base sequence corresponding to the first sequence includes one or more of the following sequences (or, the first sequence or the base sequence corresponding to the first sequence can form one or more of the following sequences after cyclic shift): [01101001000110111010001110], [01110001011101100010010110], [01110001110010001010110110], [01110100011000111011010010], [10001011100111000100101101], [10100101100011101000100111], [10100101110010111000100011], [10110001001011101000111001], [10110001101101000101000111], [10110010001110001110100101], [10111000110001011100100101], [11000100011101001110100101], [11000110011101000101001011], [11000111001010110010001011], [11010010010111010001100011], [11010010100010111001100011], [11011000110110100010100011], [11100010001101010011010011], [11100100010101100011010011], [11100100011011010001010011], [11101000110100011001010011], [01001011011100011000101110], [01100010111011100010110100], [01110001001011011000101110], [01110001011011010001001110], [01110001101101001000101110], [01110010001101011100010110], [10010110100111000100010111], [10011100010111001000101101], [10100011100101101000100111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [10100101101101000101000111], [101001011[10100101110001110110010001]，[10110001100011101000101101]，[10110001110001011100100101]，[10110010100011100010011101]，[10110100011000111010001011]，[11000100111010100110100011]，[11000101110010110010100011]，[11000101110100101000110011]，[11000110110001010001011011]，[11001000101011100011010011]，[11001000111010010110001011]，[11001010010011101001000111]，[11001010100011100100100111]，[11001011000110101000100111]，[11001011001010110001000111]，[11001100010010110100010111]，[11010001001010110011100011]，[11011010001010001101100011]，[11011100010001011000101101]，[11100010001011101001010011]，[11100010100011011010010011]，[11100010100110100100011011]，[11100010110001011001010011]，[11100100100111000101010011]，[11101000101001000110100111]，[11101001000101001110010011]，[00101101000111011101000110]，[01101000111010110001001110]，[01101001011101000110001110]，[01101101010001001110001110]，[01110001100010111010010110]，[01110001101011001000101110]，[01110010001011011010001110]，[01110010001110100100101110]，[01110011000101101000101110]，[01110100010010110110001110]，[01110100010110100011001110]，[01110100011011010010001110]，[01110101001110001001001110]，[10001001101110001110100101]，[10100100101110100011000111]，[10100100111000111010001101]，[10100100111010001100011101]，[10100100111010001110001101]，[10100101110001110001001101]，[10101100100011100010010111]，[10110001100011010001011101]，[10110100010011101000111001]，[10110100010100011101100011]，[10110100010111000110001101]，[10110100100011100111010001]，[10111001000111000101001101]，[10111010001011000110001101]，[11000101000101101100011011]，[11000101001101001110100011]，[11000101100101011100100011]，[11000110001011101001001011]，[11000110111000101000101101]，[11001000111010100011010011]，[11001001011011000101000111]，[11001001110010100010010111]，[11001010001011011000100111]，[11001010010111010001000111]，[11001010011000101100010111]，[11001010011010001101000111]，[11001011000101011100010011]，[11001011000111010100010011]，[11001100010100101110100011]，[11001100011101000101001011], [11010001011010011000100111], [11010001101001011100010011], [11010001110001101010010011], [11010010100010111000110011], [11011000100101100101000111], [11100010100010110110001101], [11100011000101110100100101], [11100100010111000110100101], [11100100011001011010001011], [11100100100110001010100111], [11100101001000110100010111], [11100101010001100100100111], [11101000100011100101101001], [11101000101100010010100111], [11101000101101001000110011], [11101001000111000100110101], [01110100100101110001001110], [10110001011100011100100101], [11001001010110001110001011],.

[0451] In some implementations, the length of the first sequence or the base sequence corresponding to the first sequence in the synchronization field is 28. For example, the first sequence or the base sequence corresponding to the first sequence includes one or more of the following sequences (or, the first sequence or the base sequence corresponding to the first sequence can form one or more of the following sequences after cyclic shift):

[0452] [1110001010100111001001001101], [1110101000100101110010011100],

[0453] [0001011101011010110001101100], [0001011101011100101011011000],

[0454] [0001011101101010010011100011], [0001101100110101101011101000],

[0455] [0001101101100011101010110100]，[0001101110001101001101010110]，

[0456] [0001110101011000110110110010]，[0001110101110010001101101001]，

[0457] [0001110110101001110010110010]，[0010011011100010101101011100]，

[0458] [0010110111010010001110100011]，[0010111010001011010011100110]，

[0459] [0010111011001001010110001110]，[0011001110100010111001011010]，

[0460] [0011001110100101101000101110]，[0011001110101101001011101000]，

[0461] [0011010111010110100011011000]，[0011100010110101001101110100]，

[0462] [0011100011011010100100010111]，[0011100100111010010001010111]，

[0463] [0011100101011101000100100111]，[0011100101110010010111010100]，

[0464] [0011101000101110111001010010]，[0011101000110111010110010100]，

[0465] [0011101011010100011101100100]，[0011101011100100011010010110]，

[0466] [0100010111011000111001011010]，[0100011010110111010001110100]，

[0467] [0100101101110100010111001100]，[0101001011101001101110011000]，

[0468] [0101011000110110110010111000]，[0101011100111001001001110100]，

[0469] [0101101001110001101110100010]，[0101101110001101000100010111]，

[0470] [0110100100111011000101000111]，[0110100101100010011101011100]，

[0471] [0111000101000110111011010010]，[0111000110101001001101110100]，

[0472] [0111010001001110001101001011]，[1000101110100101101000110011]，

[0473] [1000101110110001110010110100]，[1000111001010110110010001011]，

[0474] [1000111001010110110100010011]，[1000111010111001000100101101]，

[0475] [1001001011100110001010100111]，[1001010100110100111000100111]，

[0476] [1001011001010100111001000111]，[1001110011010100100100010111]，

[0477] [1010001110010001101101110100]，[1010001110010110110100010011]，

[0478] [1010010010111011000101100011]，[1010010110001110010001011101]，

[0479] [1010100011000110110110001011]，[1010110010110010001100010111]，

[0480] [1010110100010110010001100111]，[1010110100110001100100010111]，

[0481] [1011001001001110010101000111]，[1011001011000110101001000111]，

[0482] [1011010010001011101000110011]，[1011010010011100010100011011]，

[0483] [1011010010011101100010100011]，[1011010100011100010010011011]，

[0484] [1011010110001000101110100011]，[1100010100011011100101101001]，

[0485] [1100010100101011100010011011]，[1100010111001000101001101011]，

[0486] [1100011010100010111011011000]，[1100011101001010110010001011]，

[0487] [1100100010110110101001110001]，[1100100011010011101010001011]，

[0488] [1100110001010010110100010111]，[1100110001011101000110100101]，

[0489] [1101000100110101001011100011]，[1101000101001101001110110001]，

[0490] [1101000101011100101100010011]，[1101000101101001010001100111]，

[0491] [1101000101110100101100011001]，[1101001000101101110001011100]，

[0492] [1101010010100011100010011011]，[1101011001010001001110100011]，

[0493] [1101100010100101001101000111]，[1101100100011100010100101011]，

[0494] [1101100100011101010010100011]，[1101100100100011100010101101]，

[0495] [1110001001110010101001101001]，[1110001011001001001110010101]，

[0496] [1110001011001010010100011011]，[1110010001110010110010101001]，

[0497] [1110010010001011101010011100]，[1110010010011100010101001011]，

[0498] [1110010011001010010100010111]，[1110010011010001010010100111]，

[0499] [1110010011100010100010010111]，[1110010011101001010001010011]，

[0500] [1110010100010100101110010011]，[1110010100101000101100100111]，

[0501] [1110100010010101101100011100]，[1110100010110100101000110011]，

[0502] [1110100100010100011100100111]，[0001011100111011001011001010]，

[0503] [0001011101101101010011000110]，[0001011101110100111000100101]，

[0504] [0001101010111001100010110110]，[0001101011010111010011011000]，

[0505] [0001101100011101011101101000]，[0001110101110011001001011010]，

[0506] [0001110110001101010110010110]，[0010100110101110110001011100]，

[0507] [0010110101011100011011011000]，[0010111001001001110011101010]，

[0508] [0011001110100010111011010010]，[0011010011011101010010001110]，

[0509] [0011011000101101011101011000]，[0011011101001001010110001110]，

[0510] [0011100011101100100101011010]，[0011100101110010001011011010]，

[0511] [0011101000111011010001001011]，[0101001011001110011011101000]，

[0512] [0101001101001101110011101000]，[0101101001001100111010111000]，

[0513] [0101101001110100010111001100]，[0101101101000100111010011100]，

[0514] [0101110001101110010010001011]，[0110100011101011000100011011]，

[0515] [0110101000110111011001011000]，[0111000110101001001011101100]，

[0516] [0111001000110100110101110100]，[0111010001011010010111001100]，

[0517] [1001001100101011100010100111]，[1001010111001000100110100111]，

[0518] [1001100011010010111010001011]，[1010010001110010111011101000]，

[0519] [1010010110001011101000110011]，[1010010110110011000101000111]，

[0520] [1100010100011011100100101101]，[1100010111010001000110101101]，

[0521] [1100011010001101110100100101]，[1100100010110110100111000101]，

[0522] [1100100111010010100010100111]，[1100101100100010101101110001]，

[0523] [1100110001011101000100101101]，[1101000100100111011000111010]，

[0524] [1101000110110110001100010101]，[1101000111010001001010011101]，

[0525] [1110001001010110001101001101]，[1110010110010001001110101001]，

[0526] [1110011000101001011010001011]，[1110100010100101001100100111]，

[0527] [1110100010100101001110010011]，[0001010111011010001101100011]，

[0528] [0001011011101011100011011000]，[0001011101001011010111001100]，

[0529] [0001011101100111001101001010]，[0001100111010110100101110100]，

[0530] [0001101001101110110001010110]，[0001101011100010101100110110]，

[0531] [0001101100010110101110101100]，[0001101100101110101101011000]，

[0532] [0001101101010011101011101000]，[0001101101110100010101100011]，

[0533] [0001110100110101101011100100]，[0001110100110110110001101010]，

[0534] [0010011011011100011101010010]，[0010011011100011101011010100]，

[0535] [0010011101011010110010111000]，[0010011101011100011011010010]，

[0536] [0010011101110010100011101001]，[0010110100111000110111010001]，

[0537] [0010111010110010110001001110]，[0010111011001010110100011100]，

[0538] [0011011000110101101011101000]，[0011011100101100010101110100]，

[0539] [0011101011100100011011010010]，[0100101011100011101101100100]，

[0540] [0100101101100010011101011100]，[0100101101100011101011100100]，

[0541] [0100110100111001010110111000]，[0101110001101001001011101100]，

[0542] [0110101011001011000111011000]，[0110110100011001110101011000]，

[0543] [1000110111001011001010001011]，[1000111011010100010011010011]，

[0544] [1001011011000100111010111000]，[1001011100010100111011100100]，

[0545] [1010100111001001001101000111]，[1011010010001001110101110001]，

[0546] [1011100101001000101110001011]，[1011101000100111000110100101]，

[0547] [1100010111000100101110110100]，[1100011100100101011011101000]，

[0548] [1100100111001010010100010111]，[1100101000101001011100100111]，

[0549] [1100110001011010010111010001]，[1101000100110110101001110001]，

[0550] [1101001010100011100100100111]，[1101001011000111001000101110]，

[0551] [1101100010001101011100010110]，[1101100010100011100100101101]，

[0552] [1110010101000110011101001001]，[1110100010010010101100111001]，

[0553] [0001101011101011010001101100]，[0010101101011100011101100100]，

[0554] [0010111010010110101110011000], [0100101101110110001010001110],

[0555] [0110001100101011011011101000], [0110100110101011000110111000].

[0556] In some implementations, the first sequence or the base sequence corresponding to the first sequence has a length of 30. For example, the first sequence or the base sequence corresponding to the first sequence includes one or more of the following sequences (or, the first sequence or the base sequence corresponding to the first sequence can form one or more of the following sequences after cyclic shift):

[0557] [110011100010100010011101001011], [110100010111001001010011100011],

[0558] [110100101110001100010001011101], [110100101110010001010001110011],

[0559] [111001000110001011101001001011], [111001010001101001001100010111],

[0560] [011010011101001000111010001110], [101100010111000100011100101101],

[0561] [101101001110001000111010001101], [110001011001000111011010100011],

[0562] [110001110010100100111010001011], [110010010001110010101110001011],

[0563] [110100011101010011100010010011], [110110001001110001101000101011],

[0564] [111010001100100101100010100111], [011100010111000100101110010110],

[0565] [101001001011100011100010011101], [101110010001110001110100100101],

[0566] [110001010110111000100110100011], [110100100101110100011000100111],

[0567] [110101000101100011100100011011], [101100010111000111000100101101],

[0568] [101101001000111000111010001101], [111010001010011001000110100111],

[0569] [101011011010001000100111000111], [111000111001000100010110110101],

[0570] [111001011000100110010100010111], [101110001001110100010010010111].

[0571] In some implementations, the first sequence or the base sequence corresponding to the first sequence has a length of 32. For example, the first sequence or the base sequence corresponding to the first sequence includes one or more of the following sequences (or, the first sequence or the base sequence corresponding to the first sequence can form one or more of the following sequences after cyclic shift):

[0572] [00011100111010001101110100100101];

[0573] [00101110100010110101101110011000];

[0574] [00110111010010100100111000111010];

[0575] [01000111011011100010110110001010];

[0576] [01011011010001001110100011000111]；

[0577] [01011100011100100101001011101100]；

[0578] [01100010011101011010011010111000]；

[0579] [01110001110110010001001010010111]；

[0580] [00010110101101110110010001110001]；

[0581] [00011001110110101101000101110100]；

[0582] [00011011010100111000101110100110]；

[0583] [00011101011001011010111001000110]；

[0584] [01010001101101000111011011100010]；

[0585] [01100101110100011100101011011000]；

[0586] [11100100101011000111010001011001]；

[0587] [10001110001001101110110101101000]；

[0588] [10100011100011011010110100010011]；

[0589] [10100100101110110001011100111000]；

[0590] [10111000100100011101001001110101]；

[0591] [11001000101101011011000111000101]；

[0592] [11010001011101001010010001100111];

[0593] [11100010100110100101000110111001];

[0594] [11100011000101110010001011011010];

[0595] [11100110001001010010111010001011];

[0596] [10011010001011100011010100100111];

[0597] [10011101100010100101100101000111];

[0598] [10101110010010111000100100011101];

[0599] [11101001010010001001101110001110].

[0600] Optionally, the length of the first sequence or the base sequence corresponding to the first sequence can be an odd number. The design of such a sequence is similar to that of a sequence with an even length, which will not be repeated here.

[0601] Optionally, the first sequence or the base sequence corresponding to the first sequence can be an m-sequence. The length of the m-sequence is, for example, 2 n -1 (n is a positive integer greater than or equal to 1). The m-sequence has good correlation. Some examples of the m-sequence are given below.

[0602] In some implementations, the length of the first sequence or the base sequence (which can be an m-sequence) corresponding to the first sequence in the synchronization field is 7. For example, the first sequence or the base sequence corresponding to the first sequence includes one or more of the following sequences (alternatively, the first sequence or the base sequence corresponding to the first sequence can form one or more of the following sequences after cyclic shift): [1001011], [1001110].

[0603] In some implementations, the first sequence in the synchronization field or the base sequence corresponding to the first sequence (which can be an m-sequence) has a length of 15. For example, the first sequence or the base sequence corresponding to the first sequence includes one or more of the following sequences (or, the first sequence or the base sequence corresponding to the first sequence, after being cyclically shifted, can form one or more of the following sequences):

[0604] In some implementations, the first sequence in the synchronization field or the base sequence corresponding to the first sequence (which can be an m-sequence) has a length of 31. For example, the first sequence or the base sequence corresponding to the first sequence includes one or more of the following sequences (or, the first sequence or the base sequence corresponding to the first sequence, after being cyclically shifted, can form one or more of the following sequences):

[0605] [1000010010110011111000110111010];

[0606] [1000010101110110001111100110100];

[0607] [1000010110101000111011111001001];

[0608] [1000011100110111110100010010101];

[0609] [1000011010100100010111110110011];

[0610] [1000011001001111101110001010110].

[0611] Optionally, the first sequence or the base sequence corresponding to the first sequence is a gold sequence. The gold sequence has good correlation.

[0612] In some implementations, the m-sequence associated with the gold sequence (such as the m-sequence used to generate the gold sequence) has a length of 7, 15, or 31. Illustratively, the m-sequence (or the sequence formed after the m-sequence is cyclically shifted) can include one or more of the following sequences:

[0613] [1001011];

[0614] [1001110];

[0615] [100010011010111];

[0616] [100011110101100];

[0617] [1000010010110011111000110111010];

[0618] [1000010101110110001111100110100];

[0619] [1000010110101000111011111001001];

[0620] [1000011100110111110100010010101];

[0621] [1000011010100100010111110110011];

[0622] [1000011001001111101110001010110].

[0623] It should be noted that the encoding manner of the sequence mentioned in any of the foregoing embodiments is not specifically limited in the embodiments of the present application. For example, the sequence mentioned in each of the foregoing embodiments (such as the first sequence or the base sequence corresponding to the first sequence) can be Manchester encoded.

[0624] It is mentioned above that, in some implementations, the first PPDU can include a wideband part (for example, the first PPDU is a downlink PPDU, and the first PPDU includes a wideband part and a narrowband part). In some implementations, the wideband part can include one or more of the following fields: L-STF, L-LTF, L-SIG, BPSK-Mark (the BPSK-Mark can include BPSK-Mark1 and BPSK-Mark2).

[0625] It is mentioned above that, in some implementations, the first PPDU can include a narrowband part, and the narrowband part includes a synchronization field. In some implementations, in addition to the synchronization field, the first PPDU can further include a SIG field and a data field. Alternatively, the first PPDU can include a data field, but does not include a SIG field. If the sequence in the synchronization field of the first PPDU corresponds to a certain transmission parameter (that is, the sequence of the synchronization field implicitly indicates a certain transmission parameter), and the first PPDU includes a SIG field, the SIG field can carry other transmission parameters in addition to the transmission parameters indicated in the synchronization field. Taking the PPDU received or transmitted by the AMP device as an example, the SIG field can be referred to as an AMP-SIG field. In some implementations, the data field of the first PPDU is Manchester encoded.

[0626] Taking the first PPDU used for the communication of an AMP device (which can be an AMP device communicating based on backscatter communication mode, or an AMP device communicating based on non-backscatter mode (such as active transmission communication mode)) as an example, the first PPDU can adopt a structure as shown in FIG. 9A, for example. As can be seen from FIG. 9A, the structure of the first PPDU is similar to the PPDU structure of 802.11ba. The first PPDU includes a wideband part (the bandwidth of the wideband part can be 20 MHz). The wideband part includes fields such as L-STF, L-LTF, L-SIG, BPSK Mark (including BPSK Mark1 and BPSK Mark2), etc. The wideband part is mainly used for compatibility with other conventional wifi devices. In addition to the wideband part, the first PPDU also includes a narrowband part (the bandwidth of the narrowband part can be 4 MHz). The narrowband part includes AMP-Sync, AMP-SIG, and a data part. The AMP-Sync can be used for synchronization of the AMP device, the AMP-SIG can carry information of part of the physical layer parameters, and the data part is used for data transmission of the AMP. Of course, the PPDU structure given in FIG. 9A is only an example of the PPDU structure used by the AMP device. The AMP device can also use other PPDU structures, such as a PPDU structure including only a narrowband part. In addition to including the AMP-Sync, the PPDU can also include the AMP-SIG and / or the data part, for example.

[0627] In addition to the first sequence mentioned above, in some implementations, the first PPDU can also include a fourth sequence. The fourth sequence can be used for clock calibration by the second device. The fourth sequence can include a plurality of bits for clock calibration. For example, the fourth sequence includes n repetitions of “01” or “10”. After identifying the fourth sequence, the second device can perform clock calibration based on the fourth sequence.

[0628] The present embodiment does not specifically limit the bearing position of the fourth sequence in the first PPDU.

[0629] In some implementations, the fourth sequence is located in the synchronization domain of the first PPDU. That is, in addition to including the first sequence mentioned above, the synchronization domain can also include the fourth sequence. In the synchronization domain, as shown in FIG. 9B, the fourth sequence can be located before the first sequence in the time domain, or the fourth sequence can be located after the first sequence in the time domain. The fourth sequence and the first sequence can jointly constitute a synchronization sequence in the synchronization domain.

[0630] In some embodiments, the fourth sequence can be located in other information field of the first PPDU except the synchronization field. For example, the fourth sequence can be located before the first sequence in time domain (as shown in FIG. 9C), or can be located after the first sequence. In other words, the information field where the fourth sequence is located is located before the synchronization field, or is located after the synchronization field.

[0631] In some embodiments, the synchronization field mentioned above is the first information field of the first PPDU in time domain. In other words, the synchronization field is located at the most front end of the first PPDU. For example, the first PPDU includes, in time domain, in order: the fourth sequence, the first sequence, and other bit fields.

[0632] The method embodiments of the present application are described in detail above in combination with FIG. 1 to FIG. 9C, and the device embodiments of the present application are described in detail below in combination with FIG. 10 to FIG. 12. It should be understood that the description of the method embodiments corresponds to the description of the device embodiments, and therefore, the parts not described in detail can be referred to the method embodiments described above. For example, the first sequence mentioned in the device embodiments can be the first sequence mentioned in any of the method embodiments.

[0633] FIG. 10 is a structural schematic diagram of a communication device according to an embodiment of the present application. The communication device 1000 shown in FIG. 10 can be the first device mentioned in the above various embodiments. The communication device 1000 can include a communication module 1010. The communication module 1010 is configured to send a first PPDU to a second device; wherein the first PPDU includes a synchronization field, and the sequence in the synchronization field is a first sequence. The description of the function implementation of the communication module 1010 can be referred to the method embodiments shown in FIG. 1 to FIG. 9C, and will not be described here. The description of the first PPDU sent by the communication device 1000 can be referred to the description of the first PPDU in the method embodiments shown in FIG. 1 to FIG. 9C, and will not be described here.

[0634] FIG. 11 is a structural schematic diagram of a communication device according to another embodiment of the present application. The communication device 1100 shown in FIG. 11 can be the second device mentioned in the above various embodiments. The communication device 1100 can include a communication module 1110. The communication module 1110 is configured to receive a first PPDU sent by a first device; wherein the first PPDU includes a synchronization field, and the sequence in the synchronization field is a first sequence. The description of the function implementation of the communication module 1110 can be referred to the method embodiments shown in FIG. 1 to FIG. 9C, and will not be described here. The description of the first PPDU received by the communication device 1100 can be referred to the description of the first PPDU in the method embodiments shown in FIG. 1 to FIG. 9C, and will not be described here.

[0635] FIG. 12 is a schematic structural diagram of a communication device to which embodiments of the present application can be applied. The dashed line in FIG. 12 indicates that the unit or module is optional. The device 1200 can be used to implement the methods described in the above method embodiments. The device 1200 can be a chip, a terminal device, or a network device.

[0636] The device 1200 can include one or more processors 1210. The processor 1210 can support the device 1200 to implement the methods described in the above method embodiments. The processor 1210 can be a general purpose processor or a dedicated processor. For example, the processor can be a central processing unit (CPU). Alternatively, the processor can also be other general purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic, discrete hardware components, etc. The general purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0637] The device 1200 can also include one or more memories 1220. The memory 1220 stores a program, which can be executed by the processor 1210, so that the processor 1210 performs the methods described in the above method embodiments. The memory 1220 can be independent of the processor 1210 or integrated in the processor 1210.

[0638] The device 1200 can also include a transceiver 1230. The processor 1210 can communicate with other devices or chips through the transceiver 1230. For example, the processor 1210 can perform data transmission and reception with other devices or chips through the transceiver 1230.

[0639] Embodiments of the present application also provide a computer readable storage medium for storing a program. The computer readable storage medium can be applied in the terminal device or network device provided by the embodiments of the present application, and the program causes the computer to execute the method performed by the communication device in each of the embodiments of the present application.

[0640] Embodiments of the present application also provide a computer program product. The computer program product includes a program. The computer program product can be applied in the terminal device or network device provided by the embodiments of the present application, and the program causes the computer to execute the method performed by the communication device in each of the embodiments of the present application.

[0641] The embodiments of the present application further provide a computer program. The computer program can be applied to the terminal device or the network device provided by the embodiments of the present application, and the computer program enables a computer to execute the method performed by the communication device in the embodiments of the present application.

[0642] It should be understood that the terms "system" and "network" can be used interchangeably in the present application. In addition, the terms used in the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application. The terms "first", "second", "third", and "fourth" and the like in the specification and claims of the present application and the drawings are used to distinguish different objects, and are not used to describe a particular order. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0643] In the embodiments of the present application, the "indication" mentioned can be direct indication, or indirect indication, or can be an indication of an associated relationship. For example, A indicates B, which can mean that B can be obtained by A; or A indirectly indicates B, for example, A indicates C, and B can be obtained by C; or A and B have an associated relationship.

[0644] In the embodiments of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean that B is determined only according to A, but B can also be determined according to A and / or other information.

[0645] In the embodiments of the present application, the term "corresponding" can mean that there is a direct or indirect corresponding relationship between the two, or can mean that there is an associated relationship between the two, or can mean an indication and being indicated, configuration and being configured, and the like.

[0646] In the embodiments of the present application, "predefined" or "preconfigured" can be implemented by pre-saving corresponding codes, tables or other information that can be used to indicate related information in devices (for example, including terminal devices and network devices), and the present application does not limit the specific implementation manner. For example, predefinition can mean definition in a protocol.

[0647] In the embodiments of the present application, the "protocol" can refer to a standard protocol in the communication field, for example, can include an LTE protocol, an NR protocol, and a related protocol applied to a future communication system, and the present application does not limit this.

[0648] The term "and / or" used in the embodiments of the present application only describes an association relationship of associated objects, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this document generally represents an "or" relationship between the front and rear associated objects.

[0649] In various embodiments of the present application, the size of the sequence number of each process described above does not mean the order of execution, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0650] In several embodiments provided by the present application, it should be understood that the disclosed system, device and method can be implemented by other ways. For example, the device embodiments described above are only schematic, and the division of the units is only a logical function division, and there can be another division way in actual implementation, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms.

[0651] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. According to actual needs, part or all of the units can be selected to achieve the purpose of the embodiments of the present application.

[0652] In addition, each functional unit in each embodiment of the present application can be integrated into a processing unit, or each unit can exist physically independently, or two or more units can be integrated into one unit.

[0653] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The computer readable storage medium can be any available medium that can be read by a computer or a data storage device such as a server, data center and the like integrated with one or more available media sets. The available media can be magnetic media (for example, floppy disk, hard disk, magnetic tape), optical media (for example, digital video disc (DVD)) or semiconductor media (for example, solid state disk (SSD)) and the like.

[0654] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A communication method characterized by comprising: Comprising: a first device sending a first physical layer protocol data unit (PPDU) to a second device; wherein the first PPDU comprises a synchronization field, and a sequence in the synchronization field is a first sequence.

2. The method of claim 1, wherein, The first sequence comprises a first number of 0s and a second number of 1s, and the first number and the second number are equal.

3. The method according to claim 1 or 2, characterized in that, Consecutive 0s or consecutive 1s in the first sequence correspond to a modulation symbol occupying a time duration less than or equal to a first time duration.

4. The method of claim 3, wherein, The first time duration is less than or equal to 9 microseconds.

5. The method of claim 4, wherein, The first time duration is 8 microseconds.

6. The method according to any one of claims 1 to 5, characterized in that, A first bit of the first sequence is 1.

7. The method according to any one of claims 1 to 6, characterized in that, The first sequence is one of a plurality of candidate sequences of the synchronization field, each candidate sequence of the plurality of candidate sequences corresponding to one or more transmission parameters, wherein different candidate sequences correspond to different transmission parameters.

8. The method of claim 7, wherein, The transmission parameters comprise one or more of: a data rate, a symbol length, a transmission mode, a waveform, a coding mode.

9. The method according to any one of claims 1 to 8, characterized in that, The first sequence is one of one or more candidate sequences of the synchronization field, the one or more candidate sequences being associated with a base sequence set, the base sequence set comprising M base sequences, M being an integer greater than or equal to 1.

10. The method of claim 9, wherein, The one or more candidate sequences being associated with the base sequence set comprises: The one or more candidate sequences are candidate sequences corresponding to the M base sequences, wherein each base sequence corresponds to N candidate sequences, N being an integer greater than or equal to 1.

11. The method of claim 10, wherein, Each base sequence corresponding to N candidate sequences comprises: Each base sequence corresponds to N candidate sequences in N ways, respectively.

12. The method of claim 11, wherein, The N ways comprise one or more of: A candidate sequence is a corresponding base sequence; A candidate sequence is a complement sequence of a corresponding base sequence; A candidate sequence is a sequence formed by repeating connection of a corresponding base sequence; A candidate sequence is a sequence formed by repeating connection of a complement sequence of a corresponding base sequence; A candidate sequence is a sequence formed by connection of a corresponding base sequence and a complement sequence of the corresponding base sequence.

13. The method according to any one of claims 10 to 12, characterized in that, The one or more candidate sequences include one or more of: [G], [G G], [G G G G], where [G] denotes a set of base sequences, denotes a set of complementary sequences of the set of base sequences.

14. The method according to any one of claims 10 to 13, characterized in that, A sum of values of a relevant parameter of the N candidate sequences corresponding to each base sequence is greater than or equal to a first value.

15. The method of claim 14, wherein, The value of the relevant parameter of each candidate sequence is associated with a sliding correlation result of the candidate sequence and a second sequence corresponding to the candidate sequence, wherein the second sequence corresponding to the candidate sequence is associated with a base sequence corresponding to the candidate sequence.

16. The method of claim 15, wherein, The value of the relevant parameter of each candidate sequence comprises a ratio of a maximum value to a second maximum value in absolute values of the sliding correlation result of each candidate sequence and a second sequence corresponding to the candidate sequence.

17. The method according to claim 15 or 16, characterized in that The second sequence corresponding to the candidate sequence is associated with the base sequence corresponding to the candidate sequence includes: Ref = 2 x G m -1, Wherein, Ref represents the second sequence corresponding to the candidate sequence, Gm represents an mth sequence in the base sequence set [G], 1≤m≤M, and Gm is the base sequence corresponding to the candidate sequence.

18. The method of any one of claims 1 to 17, wherein, A cross-correlation between the first sequence and a third sequence is less than or equal to a second value, the third sequence being carried in a synchronization field of a narrowband part of a second PPDU, wherein the first PPDU is used for an access point (AP) to communicate with a first type of device, and the second PPDU is used for the AP to communicate with a second type of device.

19. The method of claim 18, wherein, The first type of device is an ambient energy (AMP) device, and the second type of device is a wake-up radio (WUR) based device.

20. The method of any one of claims 1 to 19, wherein, A length of the first sequence or a base sequence corresponding to the first sequence is even.

21. The method of any one of claims 1 to 20, wherein, The first sequence or the base sequence corresponding to the first sequence comprises P continuous 0s or P continuous 1s, P being a positive integer greater than or equal to 3.

22. The method of any one of claims 1 to 20, wherein, The first sequence or the base sequence corresponding to the first sequence has a length of 8.

23. The method of any one of claims 1 to 20, wherein, The first sequence or the base sequence corresponding to the first sequence comprises a plurality of '01' and / or '10'; or, the first sequence or the base sequence corresponding to the first sequence comprises a plurality of transitions of '01' and / or '10'.

24. The method of claim 22, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [01001110]； [10110001]； [11000101]； [10001101]； [01110010]； [10100011]。 25. The method of any one of claims 1 to 20, wherein, The first sequence or the base sequence corresponding to the first sequence has a length of 10.

26. The method of claim 25, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [0110111000], [0111001001], [1000101101], [1000110110], [1001000111], [1010010011], [1011000101], [1011010001], [1100100101], [1101000110], [1110001001].

27. The method of any one of claims 1 to 20, wherein, The first sequence or the base sequence corresponding to the first sequence has a length of 12.

28. The method of claim 27, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [011100010110], [011010001110].

29. The method of any one of claims 1 to 20, wherein, The first sequence or the base sequence corresponding to the first sequence has a length of 14.

30. The method of claim 29, wherein, [01100111010100], [01100111011000], [01101001001110], [01101010001010], [01101010001100], [01101010011000], [01101100110010], [01101101010010], [01101101100100], [01101101101000], [01110001001010], [01110001001100], [01110001011000], [01110001100100], [01110001101000], [01110010001010], [01110010001100], [01110010011000], [01110100110010], [01110101001100], [01110101100010], [01110101101000], [01111001001010], [01111001001100], [01111001011000], [01111001100100], [01111001101000], [01111010001010], [01111010001100], [01111010011000], [01111100110010], [01111101001100], [01111101100010], [01111101101000], [10001001001110], [10001001011000], [10001001100100], [10001001101000], [10001010001010], [10001010001100], [10001010011000], [10001100110010], [10001101001100], [10001101100010], [10001101101000], [10010001001110], [10010001011000], [10010001100100], [10010001101000], [10010010001010], [10010010001100], [10010010011000], [10010100110010], [10010101001100], [10010101100010], [10010101101000], [10011001001110], [10011001011000], [10011001100100], [10011001101000], [10011010001010], [10011010001100], [10011010011000], [10011100110010], [10011101001100], [10011101100010], [10011101101000], [10101001001110], [10101001011000], [10101001100100], [10101001101000], [10101010001010], [10101010001100], [10101010011000], [10101100110010], [10101101001100], [10101101100010], [10101101101000], [10110001001110], [10110001011000], [10110001100100], [10110001101000], [10110010001010], [10110010001100], [10110010011000], [10110100110010], [10110101001100], [10110101100010], [10110101101000], [10111001001110], [10111001011000], [10111001100100], [10111001101000], [10111010001010], [10111010001100], [10111010011000], [10111100110010], [10111101001100], [10111101100010], [10111101101000], [11001001001110], [11001001011000], [11001001100100], [11001001101000], [11001010001010], [11001010001100], [11001010011000], [11001100110010], [11001101001100], [11001101100010], [11001101101000], [11010001001110], [11010001011000], [11010001100100], [11010001101000], [11010010001010], [11010010001100], [11010010011000], [11010100110010], [11010101001100], [11010101100010], [11010101101000], [11011001001110], [11011001011000], [11011001100100], [11011001101000], [11011010001010], [11011010001100], [11011010011000], [11011100110010], [11011101001100], [11011101100010], [11011101101000], [11101001001110], [11101001011000], [11101001100100], [111[01110001001110]，[01110001011001]，[01110001011010]，[10010101100011]，[10011100100101]，[10100011100110]，[10100110001110]，[10100110100011]，[10101001100011]，[11000101100101]，[11000110101001]，[11100010100110]，[00100111010110]，[00101101110001]，[00101110101100]，[00110100101110]，[00110101110100]，[00110111010010]，[00110111010100]，[00111000101101]，[00111010011010]，[01000111010110]，[01000111011010]，[01001100011101]，[01001101001110]，[01011000110110]，[01011001011100]，[01011100010011]，[01011100110010]，[01100011100101]，[01100101011100]，[01100101110001]，[01100111010100]，[01101000111010]，[01101001001110]，[01101010001110]，[01101011100010]，[01101011100100]，[01101100011010]，[01101101000110]，[01110001010011]，[01110001010110]，[01110001100101]，[01110001101001]，[01110010001110]，[01110010010110]，[01110010011010]，[01110010101100]，[01110010110010]，[01110100101100]，[10001100101011]，[10001100101101]，[10001100110101]，[10001101001101]，[10001101010011]，[10001101110100]，[10001110100110]，[10001110110010]，[10010100010111]，[10010111000110]，[10011000101101]，[10011010001110]，[10100011100101]，[10100100111001]，[10100110001101]，[10101001000111]，[10101100110001]，[10110001000111]，[10110001001101]，[10110001110010]，[10110100011100]，[10110100110001]，[11000100101101]，[11000110001011]，[11001001010011]，[11001010110001]，[11010001001110]，[11010001100011]，[11010010001101]，[11100010001011]，[11100010001101]，[11100010010011]，[11100010010101]，[11101000101001]，[01001100111010]，[01001110110010]，[01001011100110]。， 31. The method of any one of claims 1 to 20, wherein, The first sequence or the base sequence corresponding to the first sequence has a length of 16.

32. The method of claim 31, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [1100011010001011]； [1100100101011100]； [1110001001010011]； [0011010110111000]； [0001110101101100]； [0001110110101100]； [0010111010011100]； [0011001001010111]； [0011010110100011]； [0011011010111000]； [0011101001010011]； [0011101010010011]； [1100010101101100]； [1100010110101100]； [1100100101000111]； [1100101001000111]； [1100110110101000]； [0001010110110011]； [1110001010010011]； [0011100101110100]； [1101000101100011]； [0011011010100011]。 33. The method of claim 31, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [0001101100101011]，[0001101110101100]，[0001110111010010]，[0010011101011100]，[0010101100100111]，[0010111010011100]，[0011010110111000]，[0011100100101011]，[0011101000101101]，[0011101001000111]，[0011101010010011]，[0100101110111000]，[0101001001100111]，[0101001101100011]，[0101011001000111]，[0101100110001011]，[0101100111010001]，[0101101000100111]，[0101101000110011]，[0101101100100011]，[0101110001001101]，[0110001110100101]，[0110010001101011]，[0110010101100011]，[0110010110001011]，[0110100110001011]，[0110110001010011]，[0110111000101001]，[0111000100101110]，[0111001000101101]，[0111001010010011]，[0111010010001101]，[0111010010001110]，[1000101011010011]，[1000101011011001]，[1000101100011011]，[1000101101011001]，[1000101110010110]，[1000110101001101]，[1000110101011001]，[1000110101110100]，[1000111010010011]，[1001001010100111]，[1001001101010011]，[1001010001110110]，[1001010110010011]，[1001011001000111]，[1001100010010111]，[1001100101001011]，[1001101001000111]，[1001101010010011]，[1001101011010001]，[1001101101010001]，[1001110001001011]，[1001110010001011]，[1001110101001001]，[1010001001110011]，[1010001011000111]，[1010001011001110]，[1010001110010011]，[1010001110010110]，[1010010011000111]，[1010011001000111]，[1010100011001011]，[1010100110001011]，[1010100110010011]，[1010100110100011]，[1010100110110001]，[1010110001001101]，[1011000101100101]，[1011000110001011]，[1011001000111010]，[1011001010001101]，[1011001010110001]，[1011001011000101]，[1011010001000111]，[1011010001001110]，[1011010001011100]，[1100010011010011]，[1100010011011010]，[1100010101001101]，[1100010101101100]，[1100010110001101]，[1100010110010101]，[1100011001001011]，[1100011010010011]，[1100011010100110]，[1100100011010011]，[1100100100111010]，[1100100101011100]，[1100101001000111]，[1100101001001110]，[1100101001011100]，[1100101010010011]，[1100101100010011]，[1100110001001011]，[1100110001011010]，[1101000110010110]，[1101000110011010]，[1101000110101100]，[1101001000111001]，[1101001001100011]，[1101001010100011]，[1101001100010101]，[1101001101000110]，[1101010001101001]，[1101010010011001]，[1101010011011000]，[1101100011010001]，[1101100100011010]，[1110001000110110]，[1110001001010011]，[1110001001101001]，[1110001001101010]，[1110001010001101]，[1110001010011001]，[1110001011000110]，[1110001100100101]，[1110010001010011]，[1110010001100101]，[1110010001101001]，[1110010001110100]，[1110010010101100]，[1110100100011001]。 34. The method of claim 33, wherein, The first sequence or the base sequence corresponding to the first sequence comprises P continuous 0s or P continuous 1s, P being a positive integer greater than or equal to 3.

35. The method of claim 34, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [0001101100101011]，[0001101110101100]，[0001110111010010]，[0010011101011100]，[0010101100100111]，[0010111010011100]，[0011010110111000]，[0011100100101011]，[0011101000101101]，[0011101001000111]，[0011101010010011]，[0100101110111000]，[0101001001100111]，[0101001101100011]，[0101011001000111]，[0101100110001011]，[0101100111010001]，[0101101000100111]，[0101101000110011]，[0101101100100011]，[0101110001001101]，[0110001110100101]，[0110010001101011]，[0110010101100011]，[0110010110001011]，[0110100110001011]，[0110110001010011]，[0110111000101001]，[0111000100101110]，[0111001000101101]，[0111001010010011]，[0111010010001101]，[0111010010001110]，[1000101011010011]，[1000101011011001]，[1000101100011011]，[1000101101011001]，[1000101110010110]，[1000110101001101]，[1000110101011001]，[1000110101110100]，[1000111010010011]，[1001001010100111]，[1001010001110110]，[1001011001000111]，[1001100010010111]，[1001101001000111]，[1001101011010001]，[1001101101010001]，[1001110001001011]，[1001110010001011]，[1001110101001001]，[1010001001110011]，[1010001011000111]，[1010001011001110]，[1010001110010011]，[1010001110010110]，[1010010011000111]，[1010011001000111]，[1010100011001011]，[1010100110001011]，[1010100110100011]，[1010100110110001]，[1010110001001101]，[1011000101100101]，[1011000110001011]，[1011001000111010]，[1011001010001101]，[1011001010110001]，[1011001011000101]，[1011010001000111]，[1011010001001110]，[1011010001011100]，[1100010011010011]，[1100010011011010]，[1100010101001101]，[1100010101101100]，[1100010110001101]，[1100010110010101]，[1100011001001011]，[1100011010010011]，[1100011010100110]，[1100100011010011]，[1100100100111010]，[1100100101011100]，[1100101001000111]，[1100101001001110]，[1100101001011100]，[1100101100010011]，[1100110001001011]，[1100110001011010]，[1101000110010110]，[1101000110011010]，[1101000110101100]，[1101001000111001]，[1101001001100011]，[1101001010100011]，[1101001100010101]，[1101001101000110]，[1101010001101001]，[1101010011011000]，[1101100011010001]，[1101100100011010]，[1110001000110110]，[1110001001010011]，[1110001001101001]，[1110001001101010]，[1110001010001101]，[1110001010011001]，[1110001011000110]，[1110001100100101]，[1110010001010011]，[1110010001100101]，[1110010001101001]，[1110010001110100]，[1110010010101100]，[1110100100011001]。 36. The method of claim 32 or 33, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [1101000101100011]，[1100100101011100]，[1100011010001011]，[1100010110101100]，[1100010101101100]，[0011101010010011]，[0011101001010011]，[0011100101110100]，[0011011010100011]，[0011010110100011]，[0010111010011100]。 37. The method of claim 31, wherein, The first sequence or the base sequence corresponding to the first sequence comprises 7 or more '01' and / or '10'; or, the first sequence or the base sequence corresponding to the first sequence comprises 7 or more transitions of '01' and / or '10'.

38. The method of claim 31 or 37, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [0110010010101110]， [1001101101010001]， [0100111010011010]， [0101100111010001]， [0101110001101001]， [0101110100110001]， [0110001110100101]， [0110010101100011]， [0111001010110010]， [0111010001101001]， [0111010100101100]， [1000101011010011]， [1000101110010110]， [1000110101001101]， [1001101010011100]， [1001110001011010]， [1010001011001110]， [1010001110010110]， [1010011000101110]， [1011000101100101]， [0010101100110110]， [0010101101100110]， [0010101110010110]， [0010110010111001]， [0010110011100101]， [0010110011101010]， [0010111001011001]， [0010111001100101]， [0010111001101001]， [0010111001101010]， [0011001110100101]， [0011001110101001]， [0011010010101110]， [0011010101100110]， [0011011001010110]， [0011011010100110]， [0011100101011001]， [0011101001011001]， [0011101001100101]， [0011101001101010]， [0100101011100110]， [0100101100111010]， [0100110100111010]， [0100110101001110]， [0100111001101010]， [0101001100111010]， [0101011001001110]， [0101011001011100]， [0101011001101100]， [0101011001110010]， [0101011001110100]， [0101011011000110]， [0101011011001100]， [0101011100100110]， [0101011100110100]， [0101100110001011]， [0101100110100011]， [0101101000110011]， [0101101101000110]， [0101110010110010]， [0101110011001010]， [0101110011010010]， [0110001010110110]， [0110001011001011]， [0110001011101001]， [0110010100101110]， [0110010101101100]， [0110010110001011]， [0110010110100011]， [0110011010101100]， [0110011010110100]， [0110011011010100]， [0110100101011100]， [0110100110001011]， [0110100111010100]， [0110101001101100]， [0110110010101100]， [0110110011010100]， [0110110101000110]， [0111001001101010]， [0111001010100110]， [0111001101000101]， [0111010001100101]， [0111010010100110]， [0111010011010100]， [0111010100100110]， [1000101011011001]， [1000101100101011]， [1000101101011001]， [1000101110011010]， [1000110010111010]， [1000110101011001]， [1000110110010101]， [1001001010111001]， [1001001100101011]， [1001001101010011]， [1001010110010011]， [1001011000101011]， [1001011001110100]， [1001011010100011]， [1001100100101011]， [1001100101001011]， [1001100101010011]， [1001101001011100]， [1001101001110100]， [1001101010010011]， [1001101011010001]， [1001110100010110]， [1001110100110100]， [1001110101001001]， [1010001100101101]， [1010001100110101]， [1010001101001101]， [1010010010111001]， [1010010111001100]， [1010011001011100]， [1010011001110100]， [1010100011001011]， [1010100011011001]， [1010100100110011]， [1010100100111001]， [1010100110001011]， [1010100110001101]， [1010100110010011]， [1010100110100011]， [1010100110110001]， [1010110011000101]， [1011000110010101]， [1011001010110001]， [1011001011000101]， [1011010011000101]， [1011010100011001]， [1100010110010101]， [1100010110011010]， [1100010110100110]， [1100011010100110]， [1100100101011001]， [1100100110101001]， [1100101010011001]， [1100101101010001]， [1100110001010110]， [1100110001011010]， [1101000110010101]， [1101000110010110]， [1101000110011010]， [1101000110100110]， [1101001100010101]， [1101001100011010]， [1101001101000110]， [1101010001101001]， [1101010010011001]， [1101010011001001]， [0010101100101110]， [0011010100110110]， [0011011001101010]， [0101001100101110]， [0101100011001011]， [0101101000111001]， [0110010110101100]， [0110011101010010]， [0110101000110011]， [0111010011001010]， [1000101100110101]， [1001010111001100]， [1001100010101101]， [1001101001010011]， [1010010111000110]， [1010011100110100]， [1010110011010001]， [1100100110010101]， [1100101011001001]， [1101010011010001]， [0010110101100110]， [0011001101101010]， [0011101010010110]， [0101001011100110]， [0101100101110010]， [0101101000111010]， [0101110001011010]， [0110001011011010]， [0110001101101010]， [0110010011101010]， [0110010101001110]， [0110011101001010]， [0110100010111001]， [0110100111000101]， [0110100111010001]， [0110101011001100]， [1001010100110011]， [1001011000101110]， [1001011000111010]， [1001011101000110]， [1001100010110101]， [1001101010110001]， [1001101100010101]， [1001110010010101]， [1001110100100101]， [1010001110100101]， [1010010111000101]， [1010011010001101]， [1010110100011001]， [1100010101101001]， [1100110010010101]， [1101001010011001]， [0011001101010110]， [0011010110100110]， [1100101001011001]， [1100110010101001]。 39. The method of claim 36, wherein, In the first PPDU, a signal corresponding to a signal of 1 before the first sequence.

40. The method of any one of claims 1 to 20, wherein, The first sequence or the base sequence corresponding to the first sequence has a length of 18.

41. The method of claim 40, wherein, The first sequence or the first sequence corresponding to the base sequence includes one or more of the following sequences: [011001010110111000], [100110101001000111], [111000100101011001], [000111011010100110], [101001011100010011], [000101110110101100], [000110110111010100], [000111001101101010], [000111010110110010], [000111011011001010], [000111011100101100], [001101001110111000], [001101011000101110], [001101011011101000], [001110010010111010], [010010010111001110], [010010011100111010], [010011011100011010], [010100110110111000], [010101101100111000], [010110110001000111], [010110110010001110], [010111010010011100], [011001011010001110], [011001110001011010], [011011000101011100], [011011010001001110], [011100010011011010], [011100010011101001], [011100010101101100], [011100010110100110], [011100011010001011], [011100011100100101], [011100101000101110], [011100111010010010], [011101000110101100], [011101001001011100], [100010111001010011], [100011100100110101], [100100101011100011], [100101110100110001], [100110001110100101], [100111001010001011], [100111010001001011], [101000111001100101], [101001001101110001], [101001011011100011], [101001100101011100], [101001110010011100], [101001110100101011], [101001110110010011], [101001110110101100], [101001110111010100], [101001110111011010], [101001110111100101], [101001110111101100], [101001110111110011], [101001110111110100], [101001110111111001], [101001110111111010], [101001110111111011], [101001110111111100], [101001110111111101], [101001110111111110], [101001110111111111], [101001110111111112], [101001110111111113], [101001110111111114], [101001110111111115], [101001110111111116], [101001110111111117], [101001110111111118], [101001110111111119], [101001110111111120], [101001110111111121], [101001110111111122], [101001110111111123], [101001110111111124], [101001110111111125], [101001110111111126], [101001110111111127], [101001110111111128], [101001110111111129], [101001110111111130], [101001110111111131], [101001110111111132], [101001110111111133], [101001110111111134], [101001110111111135], [101001110111111136], [101001110111111137], [101001110111111138], [101001110111111139], [101001110111111140], [101001110111111141], [101001110111111142], [101001110111111143], [101001110111111144], [101001110111111145], [101001110111111146], [101001110111111147], [101001110111111148], [101001110111111149], [101001110111111150], [101001110111111151], [101001110111111152], [101001110111111153], [101001110111111154], [[101001001110100011]，[101001011001000111]，[101001011100011001]，[101001110001001101]，[101010001101100011]，[101010010011100011]，[101100100011100101]，[110001010110100011]，[110001011010100011]，[110001100100101011]，[110001101000101101]，[110001101010010011]，[110001101100010101]，[110001101101000101]，[110001110010010101]，[110010001011010011]，[110010001110100101]，[110010010101110001]，[110010110001000111]，[110100011010010011]，[110100101000100111]，[110101000101100011]，[110101001001100011]，[110101001001110001]，[111000100010110101]，[111000100010110110]，[111000100011011010]，[111000100101001101]，[111000100110100101]，[111000101001001101]，[111000101010010011]，[111000101100101001]，[111000110010010101]，[111001000101001011]，[111010001001010011]，[111010010010001110]，[001101011010001110]，[001101101010001110]，[001110001010110110]，[001110101000110110]，[010001110011011010]，[010100110110001110]，[011000110100101110]，[011000110101110100]，[011001101011100010]，[011010001101110001]，[011011000111001010]，[011011010001000111]，[011011010100011100]，[011100010010010111]，[011100011011000101]，[011100100010110110]，[011101000101001110]，[011101001010001110]，[100010110110001101]，[100011100100101011]，[100011101010010011]，[100011101100010110]，[100011101100100101]，[100100111000110101]，[100100111010100011]，[100101001110001011]，[100111011001010001]，[101000101101100011]，[101000110001101101]，[101001011100110001]，[101011000111001001]，[101011001001000111]，[101101100011000101]，[101101101000110001]，[101110001100100101]，[110001010010110011]，[110001010111001001]，[110001101000101011]，[110001101010001011]，[110001110101001001]，[110010100100010111]，[110010100110001011]，[110011010010100011]，[110100010010100111]，[110100010011100011]，[110100010100111001]，[110100010101100011]，[110100110001000111]，[110101000111001001]，[110110010010100011]，[111000100010101101]，[111000100011010011]，[111000100100110101]，[111000101001011001]，[111000110010001011]，[111001010010001011]，[000110110101110100]，[000110111010110100]，[001010110110011100]，[001010111000110110]，[001010111011011000]，[001011010111011000]，[001011101011000110]，[001011101011011000]，[001110011011010100]，[001110100011010110]，[001110100100101110]，[010001110101100110]，[010011011010111000]，[010100111000110110]，[010110001110110010]，[010110011010001110]，[010110110011100010]，[011000111010001101]，[011001010110001110]，[011001110001010110]，[011010001011001110]，[011010001110001011]，[011010001110110001]，[011010100011100110]，[011010110001011100]，[011010111000100110]，[011011000111010100]，[011011100011000101]，[011100010100101110]，[011100010110101100]，[011100011011001010]，[011100100100101110]，[011101000110001101]，[011101001001001110]，[011101001011000110]，[100010100110111001]，[100010100111011001]，[100011000101101101]，[100011001011101001]，[100011001110100101]，[100011011100010110]，[100011100101001101]，[100011101001100101]，[100100101011000111]，[100100111000101011]，[100101001100010111]，[100101001101000111]，[100101001110100011]，[100101110010001110]，[100110111000101001]，[100110111001010001]，[101000110001110110]，[101000110011100101]，[101000110100100111]，[101000110110001110]，[101001001110001110]，[101001100101110001]，[101001100111000101]，[101001101001000111]，[101001110001100101]，[101001110011000101]，[101010001110010011]，[101010010011000111]，[101011010001000111]，[101100010111000110]，[101100011000101110]，[101100011010001011]，[101100011011010001]，[101100011100010110]，[101100100101000111]，[101100101001000111]，[101100101001110001]，[101101000100011011]，[101101000100011101]，[101101000100111001]，[101101000101100011]，[101101010001000111]，[101110001001001011]，[110001000111010011]，[110001001011001011]，[110001001101001011]，[110001010110001101]，[110001011100100101]，[110001011100101001]，[110001110010001011]，[110010001110001011]，[110010010101100011]，[110010010110001011]，[110010011100010101]，[110010100010111001]，[110010100110100011]，[110010100111010001]，[110010101001000111]，[110010110100010011]，[110100010011000111]，[110100010100100111]，[110100010110001101]，[110100011001010011]，[110100011100010011]，[110100100010111001]，[110100100011100011]，[110100100100011101]，[110100101100100011]，[110100110100100011]，[110101000100100111]，[111000100011001011]，[111000100101010011]，[111000100101100101]，[111001001000101011]，[111001001010001011]，[111001001011000101]，[111010001100101001]，[011100010110011010]，[100111010001010011]，[101001001110001101]，[101001100011100101]，[101011001001110001]，[101100011100100101]，[101110001000101101]，[110001010010011011]，[110001110001001011]，[110010001101001011]，[110010111000100011]，[110100010110001110]，[110100011100010110]，[110100011100101001]，[110100101100010011]，[110110001000101101]，[011100011010100110]，[011100110100010110]，[110001011001010011]。， 42. The method of any one of claims 1 to 20, wherein, The first sequence or the base sequence corresponding to the first sequence has a length of 20.

43. The method of claim 42, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [00101101011100010011], [01101011010001000111], [11000111010001001011], [00110111000101001011], [11001000111010110100], [11001011010001000111], [00011011011000101011], [00011101110100101001], [00011101110100101100], [00101011100100100111], [00101101110001011100], [00101101110100011100], [00110100101110111000], [00111010001110110100], [10010100101110111000], [11000101110001001011], [11010010001011100011], [11010010001110100011], [11010010100011101100], [11010100011011011000], [11100010001011010011], [11100010001011010110], [11100100100111010100].

44. The method of any one of claims 1 to 20, wherein, The first sequence or the base sequence corresponding to the first sequence has a length of 22.

45. The method of claim 44, wherein, The first sequence or the first sequence corresponding to the base sequence includes one or more of the following sequences: [0011010010101110111000], [0011101101001000101110], [0011101110100011010010], [0100101100010111011100], [0100101110100011001110], [0101001001101110001110], [0101100101110010001110], [0110001001110101110100], [0110100111000100010111], [0110110001110001010110], [0111000100010111001011], [0111000100111010011010], [0111000100111010110100], [0111000101001011101100], [0111000111010001001011], [0111000111011001001010], [0111010001100010110110], [1000110111001010001011], [1000110111001101000101], [1000111010010100011011], [1001010111000100100111], [1001011011000101000111], [1001110001011100100101], [1001110110100010100011], [1010110100010011000111], [1010110110010001110001], [1011000100101011100011], [1011010001100111000101], [1011010011101000100011], [1011010100010011000111], [1011100010010110001011], [1100010001011100101101], [1100011001011010001011], [1100011101010010001101], [1100100101010001110011], [1100101100011010100011], [1100101101010001000111], [1100110001011010001011], [1100110011010001010110], [1100110100010111000111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [110011[1101001000101011100011]，[1101001000111000101110]，[1101010010010011000111]，[1110001000101011010011]，[1110001010001101101001]，[1110001011000101001101]，[1110001011001010001101]，[1110001101010001001101]，[1110001110010010010101]，[1110010010011000101011]，[1110011000101101000101]，[1110100010001110010110]，[0001011101110010110100]，[0001110111010100101100]，[0010110100111011101000]，[0010110101110010001110]，[0010111001011011100010]，[0010111010110001001110]，[0010111010111001000110]，[0011011100010100101110]，[0011100101101000101110]，[0100011101101001110100]，[0100110100011101110010]，[0100111011100010110010]，[0101110001000110110110]，[0110001010111000110110]，[0110001011100011010110]，[0110010010101110001110]，[0110100100010111011100]，[0110100101110010001110]，[0110101110001000110110]，[0110110001110101000110]，[0110110100011000101110]，[0111000100111010010110]，[0111000101100101001110]，[0111000111010100100110]，[0111001000111000101101]，[0111001100010111010010]，[0111010001001011011100]，[0111010001110001001011]，[0111010010010001101110]，[0111011000100100101110]，[1000101110011101001001]，[1000110011101000101101]，[1000111000100110110101]，[1000111010001001011011]，[1000111010010001101011]，[1000111011101000110100]，[1001001011100111010001]，[1001001110011101000101]，[1001110100100101000111]，[1010001001110011100101]，[1010001010011100100111]，[1010001011010001100111]，[1010001101100111000101]，[1010001101110001100101]，[1010001110010100100111]，[1010001110011000101101]，[1010001110011011000101]，[1010011000111011000101]，[1010100100100111000111]，[1010110001110001001101]，[1010110010001011000111]，[1011000100011101001101]，[1011000111001000101110]，[1011001000101011000111]，[1011001000110101000111]，[1011001000111000110101]，[1011001010001101000111]，[1011001010110001000111]，[1011001110001000101101]，[1011010001011100011001]，[1011010001011100110001]，[1011010011000100010111]，[1011010011100010001011]，[1100010011010110100011]，[1100010011101001001011]，[1100010101100011010011]，[1100010110010100011011]，[1100010110011010100011]，[1100011000101011001011]，[1100011001010110001011]，[1100011010001001011011]，[1100011010100010110011]，[1100011011010010001011]，[1100011100100100101011]，[1100011101000100101101]，[1100011101010001001011]，[1100100100011101010011]，[1100100110100101000111]，[1100101010010011100011]，[1101000101001110010011]，[1101000110100100011101]，[1101000110101001100011]，[1101000111000100100111]，[1101001000100111000111]，[1101001000101110001110]，[1101001010001100100111]，[1101001101010001100011]，[1101001110100010001110]，[1101010001100100100111]，[1101010010010011100011]，[1101100010100101110001]，[1101100010100110100011]，[1101101001000101110001]，[1110001000110101001101]，[1110001001100101001011]，[1110001001101000110101]，[1110001010010010111001]，[1110001010010110010011]，[1110001010110001001101]，[1110001100100100101011]，[1110001110010001001011]，[1110010001011001010011]，[1110010010001110001011]，[1110010010001110101001]，[1110010011000101001011]，[1110010011100101000101]，[1110010100110010001011]，[1110100010001100101101]，[0010110001011101110001]，[0011011101001010001110]，[0011101110100010010110]，[0110001011011010001110]，[0110101000111000110110]，[0110101100011101000110]，[0110110001000111010110]，[0110110001010111000110]，[0110110110001000111010]，[0111000101101101000110]，[0111001000110101110100]，[0111010001001110001101]，[0111010001100101001110]，[0111010010100011101100]，[1000101110011100100101]，[1001001110010100010111]，[1001100011101000101101]，[1010001011001110110001]，[1010001011100111001001]，[1010010011100111010001]，[1010011100111001000101]，[1011001000111000101101]，[1011001011100010001101]，[1011010001000111001101]，[1011010001110001001101]，[1011010001110001001110]，[1011010010001011100011]，[1011100010010001011011]，[1100010100010110111001]，[1100010101100110100011]，[1100010110101100100011]，[1100011100100101010011]，[1100011101010010010011]，[1100100011100101010011]，[1100100100101011000111]，[1100100100101011100011]，[1100100111001010001011]，[1100101001101000100111]，[1100101010011100010011]，[1100101011100010010011]，[1100101100101001000111]，[1100111000101010010011]，[1101000100101101100011]，[1101000100110010100111]，[1101000101001110110001]，[1101000101101000110011]，[1101000101101001100011]，[1101001001011100100011]，[1101001010011001000111]，[1101001011100010001101]，[1101011000100101110001]，[1101101000100100011101]，[1110001001010011010011]，[1110001100100010101101]，[1110001100100010110101]，[1110001101000100110101]，[1110010010100111000101]，[1110100010100111001001]，[1010010011101000111001]，[1011000100011101001011]，[1101101001000101100011]。， 46. The method of any one of claims 1 to 20, wherein, The first sequence or the base sequence corresponding to the first sequence has a length of 24.

47. The method of claim 46, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [000110110001011010111010], [000110110011100101101010], [001011011100111010001010], [001101101011010001000111], [001110111001010100110100], [011010100011100010011011], [011100010111001000101101], [100010111010010100111001], [100011000101110110110100], [100011101000110111010010], [100011101100100100101011], [100100101110001100010111], [100101100011011000101011], [100110100110101001000111], [100111001010010111010001], [101001010111000110010011], [101011101001000110110001], [101101001000110001011101], [101101001110010001000111], [110001000110101011001011], [110001010100111010010011], [110001110010001010110110], [110010001011100011010110], [110010010100101110111000], [110100100011011000111010], [110100100100010111001110], [110101000110110001101001], [110101001001001101110001], [110110100100011000101110], [111000101001010011011001], [111001000100011101001011], [111001001110100101000101], [000101110111010100101100], [000110011011101010010110], [000110110011100101010110], [000110110011100101101010], [000110110011100101101101], [000110110011100101110001], [000110110011100101110011], [000110110011100101110100], [000110110011100101110101], [000110110011100101110110], [000110110011100101111001], [000110110011100101111010], [000110110011100101111011], [000110110011100101111100], [000110110011100101111101], [000110110011100101111110], [000110110011100101111111], [000110110011100110001011], [000110110011100110001100], [000110110011100110001101], [000110110011100110001110], [000110110011100110010011], [000110110011100110010100], [000110110011100110010101], [000110110011100110010110], [000110110011100110011011], [000110110011100110011100], [000110110011100110011101], [000110110011100110011110], [000110110011100110100011], [000110110011100110100101], [000110110011100110100110], [000110110011100110100111], [000110110011100110101011], [000110110011100110101100], [000110110011100110101101], [000110110011100110101110], [000110110011100110101111], [000110110011100110110001], [000110110011100110110011], [000110110011100110110100], [000110110011100110110101], [000110110011100110110110], [000110110011100110110111], [000110110011100111001011], [000110110011100111001100], [000110110011100111001101], [000110110011100111001110], [000110110011100111[001001101110001110100101]，[001001110010110001010111]，[001001110111000111010010]，[001100101110101101011000]，[001110001001101101011010]，[001110001001101101101010]，[001110010011101101000101]，[010100101110001110110010]，[010100110001101101110100]，[010100111000101110110010]，[010101101101100100011100]，[010110011100100100010111]，[010110100011100010011011]，[010110100011101000100111]，[010110101001101100111000]，[010110101110001000100111]，[010111000110110001001011]，[010111010010001101100011]，[011000110101101000101110]，[011001100101110101101000]，[011010010101110110011000]，[011010010110001011101100]，[011010011101000100011011]，[011011000110100111010100]，[011011010100010011100011]，[011100111010001001001011]，[100100101110010101000111]，[100100111011010001010011]，[100101001100101110001011]，[100101010001110100100111]，[100101100010111000100111]，[100110010010110101000111]，[101000111001001110110100]，[101001010110010011000111]，[101001011100011101100100]，[101001100011011011101000]，[101010001101001110010011]，[101010010010011011100011]，[101010010110010011000111]，[101011000101100100011101]，[101011010011000100010111]，[101100100010111000110101]，[101100110010100101000111]，[101101000111000100011011]，[101101001000101110110001]，[101101001000111010001101]，[101110001001101000110101]，[101110100011000100101101]，[110001110110010010010101]，[110010101000111010010011]，[110011010001010010100111]，[110100010100101110010011]，[110100011101001100101001]，[110100101011001000111001]，[110100101110001000100111]，[110110001000110100110101]，[110110001000111000101101]，[110110010001110001011010]，[111000101001010011001101]，[111000101011010010011001]，[111000101011010011001001]，[111000110010011010010101]，[111001000111010001101001]，[111001001001100011010101]，[111001001011000101010011]，[111001001011100010101001]，[111001100100010101101001]，[111010001100011101001001]，[111010010100010110011001]，[000101101011101001100110]，[000101110100110011100101]，[000101110101101001100110]，[000101110110110001100101]，[000101110111001101001010]，[000110101101011101001100]，[000110110100011101010110]，[000110110110011100101010]，[000110111000101110010110]，[000110111001010110010110]，[000110111010001110100101]，[000110111010011010100110]，[000110111011100010100101]，[000110111011100010110100]，[000111001101100101011010]，[000111001101100101101010]，[000111010100101100110110]，[000111010100101101100110]，[000111010101100010110110]，[000111010110011010110100]，[000111010110101100100110]，[000111011101001010010011]，[000111011101100011010010]，[000111011101100101001010]，[001001011011100111010001]，[001001101110001110101001]，[001001110111001011001010]，[001001110111010001101001]，[001010111001001110010110]，[001010111011001011000110]，[001011001010100111011100]，[001011010001110111011000]，[001011010100110111000110]，[001011010110011010111000]，[001011011101100011001010]，[001011100010110011010110]，[001011101001010011100110]，[001011101001100111001010]，[001101001010111011101000]，[001101010111000101101100]，[001101010111001011011000]，[001101011101001000110110]，[001101100010110101110100]，[001101100011010011101010]，[001101100111000101011010]，[001101101000110101011100]，[001101101000111010101100]，[001101110011010001011010]，[001101110100011010010110]，[001101110100011100101001]，[001110001101110101001001]，[001110101011000101101100]，[010001011100111011010010]，[010001110110010111001010]，[010010101110001110110010]，[010010110001101110111000]，[010010110111000101110010]，[010010110111001110100010]，[010010110111010001001110]，[010010111000111011100100]，[010011001101011010111000]，[010011011100011101001010]，[010011100111010001011010]，[010011101000111011010010]，[010100010110111001001110]，[010100010111001110110100]，[010100101001101110111000]，[010100101100111011101000]，[010100110001101110110100]，[010100110100111011100100]，[010101001110011011011000]，[010101101001101100111000]，[010110001100110100010111]，[010110010110001000110111]，[010110100010110011101100]，[010110101000111001101100]，[010110101101100100011100]，[010111010110100011011000]，[011000110100110111010100]，[011000111011001010110100]，[011001001101011010111000]，[011001010110010111011000]，[011001011001010110111000]，[011001100101101011101000]，[011001101101001010111000]，[011001110010100101110100]，[011010011010100111011000]，[011010011100100111010100]，[011010101001110011011000]，[011010101110001011011000]，[011010110001110100010011]，[011010110011010001110100]，[011011000100101110101100]，[011011001101001010111000]，[011011010001101010111000]，[011011010001110011101000]，[011100010011011011010100]，[011100100010111011010010]，[011100100111011010001010]，[011101000101101011000110]，[011101000110001001011011]，[100010111001110110100100]，[100011011000100101110101]，[100011011101000100101101]，[100100101011101100011100]，[100100110010110101000111]，[100100111001011000101011]，[100101001110001011101100]，[100101010110001100100111]，[100101011100011101100100]，[100101100010111011100100]，[100101100101011000100111]，[100101101001110100010011]，[100101101010001001100111]，[100110001101011010001011]，[100110011010010100010111]，[100110101001101000100111]，[100110110010100101000111]，[100111000100110101001011]，[100111001001101000101011]，[100111001011001000101011]，[101000101001011100100111]，[101000101101110010011100]，[101001010001110111011000]，[101001010010011011100011]，[101001011100010111011000]，[101001011101000110001101]，[101001011101001100010011]，[101001100011011101101000]，[101001101001110111001000]，[101010110001100100100111]，[101011000110011010001011]，[101011000111010001001101]，[101011001011000100011011]，[101011001110010001001011]，[101011001110010010001011]，[101011010001110001001101]，[101011010110010001000111]，[101011101000110001001011]，[101100010111000100101101]，[101100011000101110100101]，[101100100011100010101101]，[101101000100111010001110]，[101101010001110001001101]，[110001101100010010111010]，[110010001011100101101001]，[110010010111000101010011]，[110010010111001010100011]，[110010011000111010100101]，[110010011100101100010101]，[110010011101001010001011]，[110010100010110111001001]，[110010101000110100100111]，[110010110101000100010111]，[110100010010011100110101]，[110100010110011000110101]，[110100010110101100011001]，[110100100010011100110101]，[110100100011000101110101]，[110100101001100101000111]，[110100110101011000100011]，[110101000100110100111001]，[110101000101100100111001]，[110101000110100111001001]，[110110001000101110010110]，[110110001101001110101000]，[110110010001110001010110]，[111000100010011010110101]，[111000100010011100101101]，[111000100101011001011001]，[111000101001100101001011]，[111001000100011101011010]，[111001000101100101011001]，[111001000101110001011010]，[111001000110101001101001]，[111001001100011010010101]，[111001001100011010101001]，[111001010010100010110011]，[111010001000101011010011]，[111010001000110010110101]，[111010001001001110011010]，[111010001010010110011001]，[111010001011001100011010]，[111010010001001110011010]，[111010100011010011100100]，[111011000100011010011010]，[000101011100101100011011]，[000101101110110001100101]，[000110110100111010101100]，[000111011010100110100110]，[001010110110110010001110]，[001011011011101000110001]，[001011011100100111000101]，[001011101011010001101100]，[010011011101000111001010]，[010101101001110011011000]，[010110100010111001110010]，[011000110110010111010100]，[011010011101000111011000]，[101010010110001100100111]，[110001110110010010100101]，[111000110010011010100101]，[010100111001100101110100]，[100110011010001010010111]，[101001110011001011101000]。， 48. The method of any one of claims 1 to 20, wherein, The first sequence or the base sequence corresponding to the first sequence has a length of 26.

49. The method of claim 48, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [01101001000110111010001110], [01110001011101100010010110], [01110001110010001010110110], [01110100011000111011010010], [10001011100111000100101101], [10100101100011101000100111], [10100101110010111000100011], [10110001001011101000111001], [10110001101101000101000111], [10110010001110001110100101], [10111000110001011100100101], [11000100011101001110100101], [11000110011101000101001011], [11000111001010110010001011], [11010010010111010001100011], [11010010100010111001100011], [11011000110110100010100011], [11100010001101010011010011], [11100100010101100011010011], [11100100011011010001010011], [11101000110100011001010011], [01001011011100011000101110], [01100010111011100010110100], [01110001001011011000101110], [01110001011011010001001110], [01110001101101001000101110], [01110010001101011100010110], [10010110100111000100010111], [10011100010111001000101101], [10100011100101101000100111], [10100101110001110110010001], [10110001100011101000101101], [10110001110001011100100101], [10111001101101000101000111], [11000101101101000101000111], [11000110001101001110100101], [11000111001101000101000111], [11010001101101000101000111], [11010010001101001110100101], [11010010100010111001100101], [11011000110110100010100101], [11100010001101001110100101], [11100100010101100011000101], [11100100011011010001000101], [11101000110100011001000101], [01001011011100011000101101], [01100010111011100010110101], [01110001001011011000101101], [01110001011011010001001101], [01110001101101001000101101], [01110010001101011100010101], [10010110100111000100010101], [10011100010111001000101101], [10100011100101101000100101], [10100101110001110110010001], [10110001100011101000101101], [10110001110001011100100101], [10111001101101000101000111], [11000101101101000101000111], [11000110001101001110100101], [11000111001101000101000111], [11010001101101000101000111], [11010010001101001110100101], [11010010100010111001100101], [11011000110110100010100101], [11100010001101001110100101], [11100100010101100011000101], [11100100011011010001000101], [11101000110100011001000101], [01001011011100011000101101], [01100010111011100010110101], [01110001001011011000101101], [01110001011011010001001101], [01110001101101001000101101], [01110010001101011100010101], [100101101[10110010100011100010011101]，[10110100011000111010001011]，[11000100111010100110100011]，[11000101110010110010100011]，[11000101110100101000110011]，[11000110110001010001011011]，[11001000101011100011010011]，[11001000111010010110001011]，[11001010010011101001000111]，[11001010100011100100100111]，[11001011000110101000100111]，[11001011001010110001000111]，[11001100010010110100010111]，[11010001001010110011100011]，[11011010001010001101100011]，[11011100010001011000101101]，[11100010001011101001010011]，[11100010100011011010010011]，[11100010100110100100011011]，[11100010110001011001010011]，[11100100100111000101010011]，[11101000101001000110100111]，[11101001000101001110010011]，[00101101000111011101000110]，[01101000111010110001001110]，[01101001011101000110001110]，[01101101010001001110001110]，[01110001100010111010010110]，[01110001101011001000101110]，[01110010001011011010001110]，[01110010001110100100101110]，[01110011000101101000101110]，[01110100010010110110001110]，[01110100010110100011001110]，[01110100011011010010001110]，[01110101001110001001001110]，[10001001101110001110100101]，[10100100101110100011000111]，[10100100111000111010001101]，[10100100111010001100011101]，[10100100111010001110001101]，[10100101110001110001001101]，[10101100100011100010010111]，[10110001100011010001011101]，[10110100010011101000111001]，[10110100010100011101100011]，[10110100010111000110001101]，[10110100100011100111010001]，[10111001000111000101001101]，[10111010001011000110001101]，[11000101000101101100011011]，[11000101001101001110100011]，[11000101100101011100100011]，[11000110001011101001001011]，[11000110111000101000101101]，[11001000111010100011010011]，[11001001011011000101000111]，[11001001110010100010010111]，[11001010001011011000100111]，[11001010010111010001000111]，[11001010011000101100010111]，[11001010011010001101000111]，[11001011000101011100010011]，[11001011000111010100010011]，[11001100010100101110100011]，[11001100011101000101001011]，[11010001011010011000100111]，[11010001101001011100010011]，[11010001110001101010010011]，[11010010100010111000110011]，[11011000100101100101000111]，[11100010100010110110001101]，[11100011000101110100100101]，[11100100010111000110100101]，[11100100011001011010001011]，[11100100100110001010100111]，[11100101001000110100010111]，[11100101010001100100100111]，[11101000100011100101101001]，[11101000101100010010100111]，[11101000101101001000110011]，[11101001000111000100110101]，[01110100100101110001001110]，[10110001011100011100100101]，[11001001010110001110001011]。， 50. The method of any one of claims 1 to 20, wherein, The first sequence or the base sequence corresponding to the first sequence has a length of 28.

51. The method of claim 50, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [1110001010100111001001001101]，[1110101000100101110010011100]， [0001011101011010110001101100]，[0001011101011100101011011000]， [0001011101101010010011100011]，[0001101100110101101011101000]， [0001101101100011101010110100]，[0001101110001101001101010110]， [0001110101011000110110110010]，[0001110101110010001101101001]， [0001110110101001110010110010]，[0010011011100010101101011100]， [0010110111010010001110100011]，[0010111010001011010011100110]， [0010111011001001010110001110]，[0011001110100010111001011010]， [0011001110100101101000101110]，[0011001110101101001011101000]， [0011010111010110100011011000]，[0011100010110101001101110100]， [0011100011011010100100010111]，[0011100100111010010001010111]， [0011100101011101000100100111]，[0011100101110010010111010100]， [0011101000101110111001010010]，[0011101000110111010110010100]， [0011101011010100011101100100]，[0011101011100100011010010110]， [0100010111011000111001011010]，[0100011010110111010001110100]， [0100101101110100010111001100]，[0101001011101001101110011000]， [0101011000110110110010111000]，[0101011100111001001001110100]， [0101101001110001101110100010]，[0101101110001101000100010111]， [0110100100111011000101000111]，[0110100101100010011101011100]， [0111000101000110111011010010]，[0111000110101001001101110100]， [0111010001001110001101001011]，[1000101110100101101000110011]， [1000101110110001110010110100]，[1000111001010110110010001011]， [1000111001010110110100010011]，[1000111010111001000100101101]， [1001001011100110001010100111]，[1001010100110100111000100111]， [1001011001010100111001000111]，[1001110011010100100100010111]， [1010001110010001101101110100]，[1010001110010110110100010011]， [1010010010111011000101100011]，[1010010110001110010001011101]， [1010100011000110110110001011]，[1010110010110010001100010111]， [1010110100010110010001100111]，[1010110100110001100100010111]， [1011001001001110010101000111]，[1011001011000110101001000111]， [1011010010001011101000110011]，[1011010010011100010100011011]， [1011010010011101100010100011]，[1011010100011100010010011011]， [1011010110001000101110100011]，[1100010100011011100101101001]， [1100010100101011100010011011]，[1100010111001000101001101011]， [1100011010100010111011011000]，[1100011101001010110010001011]， [1100100010110110101001110001]，[1100100011010011101010001011]， [1100110001010010110100010111]，[1100110001011101000110100101]， [1101000100110101001011100011]，[1101000101001101001110110001]， [1101000101011100101100010011]，[1101000101101001010001100111]， [1101000101110100101100011001]，[1101001000101101110001011100]， [1101010010100011100010011011]，[1101011001010001001110100011]， [1101100010100101001101000111]，[1101100100011100010100101011]， [1101100100011101010010100011]，[1101100100100011100010101101]， [1110001001110010101001101001]，[1110001011001001001110010101]， [1110001011001010010100011011]，[1110010001110010110010101001]， [1110010010001011101010011100]，[1110010010011100010101001011]， [1110010011001010010100010111]，[1110010011010001010010100111]， [1110010011100010100010010111]，[1110010011101001010001010011]， [1110010100010100101110010011]，[1110010100101000101100100111]， [1110100010010101101100011100]，[1110100010110100101000110011]， [1110100100010100011100100111]，[0001011100111011001011001010]， [0001011101101101010011000110]，[0001011101110100111000100101]， [0001101010111001100010110110]，[0001101011010111010011011000]， [0001101100011101011101101000]，[0001110101110011001001011010]， [0001110110001101010110010110]，[0010100110101110110001011100]， [0010110101011100011011011000]，[0010111001001001110011101010]， [0011001110100010111011010010]，[0011010011011101010010001110]， [0011011000101101011101011000]，[0011011101001001010110001110]， [0011100011101100100101011010]，[0011100101110010001011011010]， [0011101000111011010001001011]，[0101001011001110011011101000]， [0101001101001101110011101000]，[0101101001001100111010111000]， [0101101001110100010111001100]，[0101101101000100111010011100]， [0101110001101110010010001011]，[0110100011101011000100011011]， [0110101000110111011001011000]，[0111000110101001001011101100]， [0111001000110100110101110100]，[0111010001011010010111001100]， [1001001100101011100010100111]，[1001010111001000100110100111]， [1001100011010010111010001011]，[1010010001110010111011101000]， [1010010110001011101000110011]，[1010010110110011000101000111]， [1100010100011011100100101101]，[1100010111010001000110101101]， [1100011010001101110100100101]，[1100100010110110100111000101]， [1100100111010010100010100111]，[1100101100100010101101110001]， [1100110001011101000100101101]，[1101000100100111011000111010]， [1101000110110110001100010101]，[1101000111010001001010011101]， [1110001001010110001101001101]，[1110010110010001001110101001]， [1110011000101001011010001011]，[1110100010100101001100100111]， [1110100010100101001110010011]，[0001010111011010001101100011]， [0001011011101011100011011000]，[0001011101001011010111001100]， [0001011101100111001101001010]，[0001100111010110100101110100]， [0001101001101110110001010110]，[0001101011100010101100110110]， [0001101100010110101110101100]，[0001101100101110101101011000]， [0001101101010011101011101000]，[0001101101110100010101100011]， [0001110100110101101011100100]，[0001110100110110110001101010]， [0010011011011100011101010010]，[0010011011100011101011010100]， [0010011101011010110010111000]，[0010011101011100011011010010]， [0010011101110010100011101001]，[0010110100111000110111010001]， [0010111010110010110001001110]，[0010111011001010110100011100]， [0011011000110101101011101000]，[0011011100101100010101110100]， [0011101011100100011011010010]，[0100101011100011101101100100]， [0100101101100010011101011100]，[0100101101100011101011100100]， [0100110100111001010110111000]，[0101110001101001001011101100]， [0110101011001011000111011000]，[0110110100011001110101011000]， [1000110111001011001010001011]，[1000111011010100010011010011]， [1001011011000100111010111000]，[1001011100010100111011100100]， [1010100111001001001101000111]，[1011010010001001110101110001]， [1011100101001000101110001011]，[1011101000100111000110100101]， [1100010111000100101110110100]，[1100011100100101011011101000]， [1100100111001010010100010111]，[1100101000101001011100100111]， [1100110001011010010111010001]，[1101000100110110101001110001]， [1101001010100011100100100111]，[1101001011000111001000101110]， [1101100010001101011100010110]，[1101100010100011100100101101]， [1110010101000110011101001001]，[1110100010010010101100111001]， [0001101011101011010001101100]，[0010101101011100011101100100]， [0010111010010110101110011000]，[0100101101110110001010001110]， [0110001100101011011011101000]，[0110100110101011000110111000]。 52. The method of any one of claims 1 to 20, wherein, The first sequence or the base sequence corresponding to the first sequence has a length of 30.

53. The method of claim 52, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [110011100010100010011101001011]，[110100010111001001010011100011]， [110100101110001100010001011101]，[110100101110010001010001110011]， [111001000110001011101001001011]，[111001010001101001001100010111]， [011010011101001000111010001110]，[101100010111000100011100101101]， [101101001110001000111010001101]，[110001011001000111011010100011]， [110001110010100100111010001011]，[110010010001110010101110001011]， [110100011101010011100010010011]，[110110001001110001101000101011]， [111010001100100101100010100111]，[011100010111000100101110010110]， [101001001011100011100010011101]，[101110010001110001110100100101]， [110001010110111000100110100011]，[110100100101110100011000100111]， [110101000101100011100100011011]，[101100010111000111000100101101]， [101101001000111000111010001101]，[111010001010011001000110100111]， [101011011010001000100111000111]，[111000111001000100010110110101]， [111001011000100110010100010111]，[101110001001110100010010010111]。 54. The method of any one of claims 1 to 20, wherein, The first sequence or the base sequence corresponding to the first sequence has a length of 32.

55. The method of claim 54, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [00011100111010001101110100100101]； [00101110100010110101101110011000]； [00110111010010100100111000111010]； [01000111011011100010110110001010]； [01011011010001001110100011000111]； [01011100011100100101001011101100]； [01100010011101011010011010111000]； [01110001110110010001001010010111]； [00010110101101110110010001110001]； [00011001110110101101000101110100]； [00011011010100111000101110100110]； [00011101011001011010111001000110]； [01010001101101000111011011100010]； [01100101110100011100101011011000]； [11100100101011000111010001011001]； [10001110001001101110110101101000]； [10100011100011011010110100010011]； [10100100101110110001011100111000]； [10111000100100011101001001110101]； [11001000101101011011000111000101]； [11010001011101001010010001100111]； [11100010100110100101000110111001]； [11100011000101110010001011011010]； [11100110001001010010111010001011]； [10011010001011100011010100100111]； [10011101100010100101100101000111]； [10101110010010111000100100011101]； [11101001010010001001101110001110]。 56. The method according to any one of claims 1 and 3 to 19, characterized in that, The first sequence or the base sequence corresponding to the first sequence has an odd length.

57. The method of any one of claims 1 to 56, wherein, The first sequence or the base sequence corresponding to the first sequence is an m-sequence.

58. The method of any one of claims 1, 3-19, and 56-57, wherein, The first sequence or the base sequence corresponding to the first sequence has a length of 7.

59. The method of claim 58, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [1001011], [1001110].

60. The method of any one of claims 1, 3-19, and 56-57, wherein, The first sequence or the base sequence corresponding to the first sequence has a length of 15.

61. The method of claim 60, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [100010011010111], [100011110101100].

62. The method of any one of claims 1, 3-19, and 56-57, wherein, The first sequence or the base sequence corresponding to the first sequence has a length of 31.

63. The method of claim 62, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [1000010010110011111000110111010]； [1000010101110110001111100110100]； [1000010110101000111011111001001]； [1000011100110111110100010010101]； [1000011010100100010111110110011]； [1000011001001111101110001010110]。 64. The method of any one of claims 1 to 56, wherein, The first sequence or the base sequence corresponding to the first sequence is a gold sequence.

65. The method of claim 64, wherein, The m sequence associated with the gold sequence has a length of 7, 15 or 31.

66. The method of claim 65, wherein, The m sequence comprises one or more of the following sequences: [1001011]； [1001110]； [100010011010111]； [100011110101100]； [1000010010110011111000110111010]； [1000010101110110001111100110100]； [1000010110101000111011111001001]； [1000011100110111110100010010101]； [1000011010100100010111110110011]； [1000011001001111101110001010110]。 67. The method of any one of claims 1 to 66, wherein: The synchronization field is an AMP synchronization field; or The first device is an AP and the second device is an AMP device; or The first device is an AMP device and the second device is an AP.

68. The method of any one of claims 1 to 67, wherein: The first PPDU comprises a wideband part and / or a narrowband part, and the synchronization field is located in the narrowband part; or Each part in the time domain of the first PPDU occupies the same bandwidth; or The first PPDU does not comprise a legacy preamble part; or The first PPDU only comprises a narrowband part and does not comprise a wideband part.

69. The method of claim 68, wherein: The first PPDU is a downlink PPDU, the first PPDU comprises a wideband part and / or a narrowband part, and the synchronization field is located in the narrowband part; or The first PPDU is a downlink PPDU, each part in the time domain of the first PPDU occupies the same bandwidth, or the first PPDU does not comprise a legacy preamble part, or the first PPDU only comprises a narrowband part and does not comprise a wideband part; or The first PPDU is an uplink PPDU, the first PPDU comprises a wideband part and / or a narrowband part, and the synchronization field is located in the narrowband part; The first PPDU is an uplink PPDU, each part in the time domain of the first PPDU occupies the same bandwidth, or the first PPDU does not comprise a legacy preamble part, or the first PPDU only comprises a narrowband part and does not comprise a wideband part; or 70. The method of any one of claims 1 to 69, wherein: The first PPDU is a downlink PPDU, and the second device is an AMP device that communicates based on a backscattering communication manner or an active transmission communication manner; or The first PPDU is an uplink PPDU, and the first device is an AMP device that communicates based on a backscattering communication manner or an active transmission communication manner.

71. The method of any one of claims 1 to 70, wherein, The first PPDU comprises a fourth sequence, and the fourth sequence is used for clock calibration of the second device.

72. The method of claim 71, wherein, The fourth sequence is located in the synchronization field.

73. The method of claim 71 or 72, wherein, The fourth sequence is located before the first sequence in the time domain, or the fourth sequence is located after the first sequence in the time domain.

74. The method of claim 71, wherein, The fourth sequence is located in an information field of the first PPDU other than the synchronization field.

75. The method of claim 74, wherein, The information field where the fourth sequence is located is before the synchronization field.

76. The method of any one of claims 1 to 74, wherein, The synchronization field is the first information field of the first PPDU in the time domain.

77. A method of communication, the method comprising: Comprise: A second device receives a first physical layer protocol data unit (PPDU) sent by a first device. The first PPDU comprises a synchronization field, and a sequence in the synchronization field is a first sequence.

78. The method of claim 77, wherein, The first sequence comprises a first number of 0s and a second number of 1s, and the first number and the second number are equal.

79. The method of claim 77 or 78, wherein, Consecutive 0s or consecutive 1s in the first sequence correspond to a modulation symbol occupying a time length less than or equal to a first time length.

80. The method of claim 79, wherein, The first time length is less than or equal to 9 microseconds.

81. The method of claim 80, wherein, The first time length is 8 microseconds.

82. The method of any one of claims 77-81, wherein, The first bit of the first sequence is 1.

83. The method of any one of claims 77-82, wherein, The first sequence is one of a plurality of candidate sequences of the synchronization field, each candidate sequence of the plurality of candidate sequences corresponds to one or more transmission parameters, wherein different candidate sequences correspond to different transmission parameters.

84. The method of claim 83, wherein, The transmission parameters include one or more of the following: data rate, symbol length, transmission mode, waveform, and coding mode.

85. The method of any one of claims 77-84, wherein, The first sequence is one of one or more candidate sequences of the synchronization field, the one or more candidate sequences are associated with a base sequence set, the base sequence set comprises M base sequences, M is an integer greater than or equal to 1.

86. The method of claim 85, wherein, The one or more candidate sequences being associated with the base sequence set comprises: The one or more candidate sequences are candidate sequences corresponding to the M base sequences, wherein each base sequence corresponds to N candidate sequences, N is an integer greater than or equal to 1.

87. The method of claim 86, wherein, Each base sequence corresponding to N candidate sequences comprises: Each base sequence corresponds to N candidate sequences in N ways.

88. The method of claim 87, wherein, The N ways include one or more of the following: The candidate sequence is the corresponding base sequence; The candidate sequence is the complement sequence of the corresponding base sequence; The candidate sequence is a sequence formed by repeating connection of the corresponding base sequence; The candidate sequence is a sequence formed by repeating connection of the complement sequence of the corresponding base sequence; The candidate sequence is a sequence formed by connecting the corresponding base sequence and the complement sequence of the corresponding base sequence.

89. The method of any one of claims 86-88, wherein, The one or more candidate sequences include one or more of: [G], [G G], [G G G G], where [G] denotes a set of base sequences, denotes a set of complementary sequences of the set of base sequences.

90. The method of any one of claims 86-89, wherein, The sum of the related parameter values of the N candidate sequences corresponding to each base sequence is greater than or equal to a first value.

91. The method of claim 90, wherein, The related parameter value of each candidate sequence is associated with a sliding correlation result of the candidate sequence and a second sequence corresponding to the candidate sequence, wherein the second sequence corresponding to the candidate sequence is associated with the base sequence corresponding to the candidate sequence.

92. The method of claim 91, wherein, The related parameter value of each candidate sequence comprises a ratio of the maximum value to the second largest value in the absolute values of the sliding correlation result of each candidate sequence and the second sequence corresponding to the candidate sequence.

93. The method of claim 91 or 92, wherein, The second sequence corresponding to the candidate sequence is associated with the base sequence corresponding to the candidate sequence includes: Ref = 2 x G m -1, wherein Ref denotes the second sequence corresponding to the candidate sequence, G m denotes the mth sequence in the base sequence set [G], 1≤m≤M, and G m is the base sequence corresponding to the candidate sequence.

94. The method of any one of claims 77-93, wherein, The cross-correlation between the first sequence and a third sequence is less than or equal to a second value, and the third sequence is carried in a synchronization field of a narrowband part of a second PPDU, wherein the first PPDU is used for an access point (AP) to communicate with a first type of device, and the second PPDU is used for the AP to communicate with a second type of device.

95. The method of claim 94, wherein, The first type of device is an ambient energy (AMP) device, and the second type of device is a wake-up radio (WUR) based device.

96. The method of any one of claims 77-95, wherein, The length of the first sequence or the base sequence corresponding to the first sequence is even.

97. The method of any one of claims 77-96, wherein, The first sequence or the base sequence corresponding to the first sequence comprises P consecutive 0s or P consecutive 1s, P being a positive integer greater than or equal to 3.

98. The method of any one of claims 77-96, wherein, The length of the first sequence or the base sequence corresponding to the first sequence is 8.

99. The method of any one of claims 77-96, wherein, The first sequence or the base sequence corresponding to the first sequence comprises a plurality of '01' and / or '10'; or, the first sequence or the base sequence corresponding to the first sequence comprises a plurality of transitions of '01' and / or '10'.

100. The method of claim 98, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [01001110]； [10110001]； [11000101]； [10001101]； [01110010]； [10100011]。 101. The method of any one of claims 77-96, wherein, The length of the first sequence or the base sequence corresponding to the first sequence is 10.

102. The method of claim 101, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [0110111000], [0111001001], [1000101101], [1000110110], [1001000111], [1010010011], [1011000101], [1011010001], [1100100101], [1101000110], [1110001001].

103. The method of any one of claims 77-96, wherein, The length of the first sequence or the base sequence corresponding to the first sequence is 12.

104. The method of claim 103, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [011100010110], [011010001110].

105. The method of any one of claims 77-96, wherein, The length of the first sequence or the base sequence corresponding to the first sequence is 14.

106. The method of claim 105, wherein, [01100111010100], [01100111011000], [01101001001110], [01101010001010], [01101010001100], [01101010011000], [01101100110010], [01101101010010], [01101101100100], [01101101101000], [01110001001010], [01110001001100], [01110001011000], [01110001100100], [01110001101000], [01110010001010], [01110010001100], [01110010011000], [01110100110010], [01110101001100], [01110101100010], [01110101101000], [01111001001010], [01111001001100], [01111001011000], [01111001100100], [01111001101000], [01111010001010], [01111010001100], [01111010011000], [01111100110010], [01111101001100], [01111101100010], [01111101101000], [10001001001110], [10001001011000], [10001001100100], [10001001101000], [10001010001010], [10001010001100], [10001010011000], [10001100110010], [10001101001100], [10001101100010], [10001101101000], [10010001001110], [10010001011000], [10010001100100], [10010001101000], [10010010001010], [10010010001100], [10010010011000], [10010100110010], [10010101001100], [10010101100010], [10010101101000], [10011001001110], [10011001011000], [10011001100100], [10011001101000], [10011010001010], [10011010001100], [10011010011000], [10011100110010], [10011101001100], [10011101100010], [10011101101000], [10101001001110], [10101001011000], [10101001100100], [10101001101000], [10101010001010], [10101010001100], [10101010011000], [10101100110010], [10101101001100], [10101101100010], [10101101101000], [10110001001110], [10110001011000], [10110001100100], [10110001101000], [10110010001010], [10110010001100], [10110010011000], [10110100110010], [10110101001100], [10110101100010], [10110101101000], [10111001001110], [10111001011000], [10111001100100], [10111001101000], [10111010001010], [10111010001100], [10111010011000], [10111100110010], [10111101001100], [10111101100010], [10111101101000], [11001001001110], [11001001011000], [11001001100100], [11001001101000], [11001010001010], [11001010001100], [11001010011000], [11001100110010], [11001101001100], [11001101100010], [11001101101000], [11010001001110], [11010001011000], [11010001100100], [11010001101000], [11010010001010], [11010010001100], [11010010011000], [11010100110010], [11010101001100], [11010101100010], [11010101101000], [11011001001110], [11011001011000], [11011001100100], [11011001101000], [11011010001010], [11011010001100], [11011010011000], [11011100110010], [11011101001100], [11011101100010], [11011101101000], [11101001001110], [11101001011000], [11101001100100], [111[01110001001110]，[01110001011001]，[01110001011010]，[10010101100011]，[10011100100101]，[10100011100110]，[10100110001110]，[10100110100011]，[10101001100011]，[11000101100101]，[11000110101001]，[11100010100110]，[00100111010110]，[00101101110001]，[00101110101100]，[00110100101110]，[00110101110100]，[00110111010010]，[00110111010100]，[00111000101101]，[00111010011010]，[01000111010110]，[01000111011010]，[01001100011101]，[01001101001110]，[01011000110110]，[01011001011100]，[01011100010011]，[01011100110010]，[01100011100101]，[01100101011100]，[01100101110001]，[01100111010100]，[01101000111010]，[01101001001110]，[01101010001110]，[01101011100010]，[01101011100100]，[01101100011010]，[01101101000110]，[01110001010011]，[01110001010110]，[01110001100101]，[01110001101001]，[01110010001110]，[01110010010110]，[01110010011010]，[01110010101100]，[01110010110010]，[01110100101100]，[10001100101011]，[10001100101101]，[10001100110101]，[10001101001101]，[10001101010011]，[10001101110100]，[10001110100110]，[10001110110010]，[10010100010111]，[10010111000110]，[10011000101101]，[10011010001110]，[10100011100101]，[10100100111001]，[10100110001101]，[10101001000111]，[10101100110001]，[10110001000111]，[10110001001101]，[10110001110010]，[10110100011100]，[10110100110001]，[11000100101101]，[11000110001011]，[11001001010011]，[11001010110001]，[11010001001110]，[11010001100011]，[11010010001101]，[11100010001011]，[11100010001101]，[11100010010011]，[11100010010101]，[11101000101001]，[01001100111010]，[01001110110010]，[01001011100110]。， 107. The method of any one of claims 77-96, wherein, The length of the first sequence or the base sequence corresponding to the first sequence is 16.

108. The method of claim 107, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [1100011010001011]； [1100100101011100]； [1110001001010011]； [0011010110111000]； [0001110101101100]； [0001110110101100]； [0010111010011100]； [0011001001010111]； [0011010110100011]； [0011011010111000]； [0011101001010011]； [0011101010010011]； [1100010101101100]； [1100010110101100]； [1100100101000111]； [1100101001000111]； [1100110110101000]； [0001010110110011]； [1110001010010011]； [0011100101110100]； [1101000101100011]； [0011011010100011]。 109. The method of claim 107, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [0001101100101011]，[0001101110101100]，[0001110111010010]，[0010011101011100]，[0010101100100111]，[0010111010011100]，[0011010110111000]，[0011100100101011]，[0011101000101101]，[0011101001000111]，[0011101010010011]，[0100101110111000]，[0101001001100111]，[0101001101100011]，[0101011001000111]，[0101100110001011]，[0101100111010001]，[0101101000100111]，[0101101000110011]，[0101101100100011]，[0101110001001101]，[0110001110100101]，[0110010001101011]，[0110010101100011]，[0110010110001011]，[0110100110001011]，[0110110001010011]，[0110111000101001]，[0111000100101110]，[0111001000101101]，[0111001010010011]，[0111010010001101]，[0111010010001110]，[1000101011010011]，[1000101011011001]，[1000101100011011]，[1000101101011001]，[1000101110010110]，[1000110101001101]，[1000110101011001]，[1000110101110100]，[1000111010010011]，[1001001010100111]，[1001001101010011]，[1001010001110110]，[1001010110010011]，[1001011001000111]，[1001100010010111]，[1001100101001011]，[1001101001000111]，[1001101010010011]，[1001101011010001]，[1001101101010001]，[1001110001001011]，[1001110010001011]，[1001110101001001]，[1010001001110011]，[1010001011000111]，[1010001011001110]，[1010001110010011]，[1010001110010110]，[1010010011000111]，[1010011001000111]，[1010100011001011]，[1010100110001011]，[1010100110010011]，[1010100110100011]，[1010100110110001]，[1010110001001101]，[1011000101100101]，[1011000110001011]，[1011001000111010]，[1011001010001101]，[1011001010110001]，[1011001011000101]，[1011010001000111]，[1011010001001110]，[1011010001011100]，[1100010011010011]，[1100010011011010]，[1100010101001101]，[1100010101101100]，[1100010110001101]，[1100010110010101]，[1100011001001011]，[1100011010010011]，[1100011010100110]，[1100100011010011]，[1100100100111010]，[1100100101011100]，[1100101001000111]，[1100101001001110]，[1100101001011100]，[1100101010010011]，[1100101100010011]，[1100110001001011]，[1100110001011010]，[1101000110010110]，[1101000110011010]，[1101000110101100]，[1101001000111001]，[1101001001100011]，[1101001010100011]，[1101001100010101]，[1101001101000110]，[1101010001101001]，[1101010010011001]，[1101010011011000]，[1101100011010001]，[1101100100011010]，[1110001000110110]，[1110001001010011]，[1110001001101001]，[1110001001101010]，[1110001010001101]，[1110001010011001]，[1110001011000110]，[1110001100100101]，[1110010001010011]，[1110010001100101]，[1110010001101001]，[1110010001110100]，[1110010010101100]，[1110100100011001]。 110. The method of claim 109, wherein, The first sequence or the base sequence corresponding to the first sequence comprises P consecutive 0s or P consecutive 1s, P being a positive integer greater than or equal to 3.

111. The method of claim 110, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [0001101100101011]，[0001101110101100]，[0001110111010010]，[0010011101011100]，[0010101100100111]，[0010111010011100]，[0011010110111000]，[0011100100101011]，[0011101000101101]，[0011101001000111]，[0011101010010011]，[0100101110111000]，[0101001001100111]，[0101001101100011]，[0101011001000111]，[0101100110001011]，[0101100111010001]，[0101101000100111]，[0101101000110011]，[0101101100100011]，[0101110001001101]，[0110001110100101]，[0110010001101011]，[0110010101100011]，[0110010110001011]，[0110100110001011]，[0110110001010011]，[0110111000101001]，[0111000100101110]，[0111001000101101]，[0111001010010011]，[0111010010001101]，[0111010010001110]，[1000101011010011]，[1000101011011001]，[1000101100011011]，[1000101101011001]，[1000101110010110]，[1000110101001101]，[1000110101011001]，[1000110101110100]，[1000111010010011]，[1001001010100111]，[1001010001110110]，[1001011001000111]，[1001100010010111]，[1001101001000111]，[1001101011010001]，[1001101101010001]，[1001110001001011]，[1001110010001011]，[1001110101001001]，[1010001001110011]，[1010001011000111]，[1010001011001110]，[1010001110010011]，[1010001110010110]，[1010010011000111]，[1010011001000111]，[1010100011001011]，[1010100110001011]，[1010100110100011]，[1010100110110001]，[1010110001001101]，[1011000101100101]，[1011000110001011]，[1011001000111010]，[1011001010001101]，[1011001010110001]，[1011001011000101]，[1011010001000111]，[1011010001001110]，[1011010001011100]，[1100010011010011]，[1100010011011010]，[1100010101001101]，[1100010101101100]，[1100010110001101]，[1100010110010101]，[1100011001001011]，[1100011010010011]，[1100011010100110]，[1100100011010011]，[1100100100111010]，[1100100101011100]，[1100101001000111]，[1100101001001110]，[1100101001011100]，[1100101100010011]，[1100110001001011]，[1100110001011010]，[1101000110010110]，[1101000110011010]，[1101000110101100]，[1101001000111001]，[1101001001100011]，[1101001010100011]，[1101001100010101]，[1101001101000110]，[1101010001101001]，[1101010011011000]，[1101100011010001]，[1101100100011010]，[1110001000110110]，[1110001001010011]，[1110001001101001]，[1110001001101010]，[1110001010001101]，[1110001010011001]，[1110001011000110]，[1110001100100101]，[1110010001010011]，[1110010001100101]，[1110010001101001]，[1110010001110100]，[1110010010101100]，[1110100100011001]。 112. The method of claim 107 or 108, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [1101000101100011]，[1100100101011100]，[1100011010001011]，[1100010110101100]，[1100010101101100]，[0011101010010011]，[0011101001010011]，[0011100101110100]，[0011011010100011]，[0011010110100011]，[0010111010011100]。 113. The method of claim 107, wherein, The first sequence or the base sequence corresponding to the first sequence comprises 7 or more '01' and / or '10'; or, the first sequence or the base sequence corresponding to the first sequence comprises 7 or more transitions of '01' and / or '10'.

114. The method of claim 107 or 113, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [0110010010101110]， [1001101101010001]， [0100111010011010]， [0101100111010001]， [0101110001101001]， [0101110100110001]， [0110001110100101]， [0110010101100011]， [0111001010110010]， [0111010001101001]， [0111010100101100]， [1000101011010011]， [1000101110010110]， [1000110101001101]， [1001101010011100]， [1001110001011010]， [1010001011001110]， [1010001110010110]， [1010011000101110]， [1011000101100101]， [0010101100110110]， [0010101101100110]， [0010101110010110]， [0010110010111001]， [0010110011100101]， [0010110011101010]， [0010111001011001]， [0010111001100101]， [0010111001101001]， [0010111001101010]， [0011001110100101]， [0011001110101001]， [0011010010101110]， [0011010101100110]， [0011011001010110]， [0011011010100110]， [0011100101011001]， [0011101001011001]， [0011101001100101]， [0011101001101010]， [0100101011100110]， [0100101100111010]， [0100110100111010]， [0100110101001110]， [0100111001101010]， [0101001100111010]， [0101011001001110]， [0101011001011100]， [0101011001101100]， [0101011001110010]， [0101011001110100]， [0101011011000110]， [0101011011001100]， [0101011100100110]， [0101011100110100]， [0101100110001011]， [0101100110100011]， [0101101000110011]， [0101101101000110]， [0101110010110010]， [0101110011001010]， [0101110011010010]， [0110001010110110]， [0110001011001011]， [0110001011101001]， [0110010100101110]， [0110010101101100]， [0110010110001011]， [0110010110100011]， [0110011010101100]， [0110011010110100]， [0110011011010100]， [0110100101011100]， [0110100110001011]， [0110100111010100]， [0110101001101100]， [0110110010101100]， [0110110011010100]， [0110110101000110]， [0111001001101010]， [0111001010100110]， [0111001101000101]， [0111010001100101]， [0111010010100110]， [0111010011010100]， [0111010100100110]， [1000101011011001]， [1000101100101011]， [1000101101011001]， [1000101110011010]， [1000110010111010]， [1000110101011001]， [1000110110010101]， [1001001010111001]， [1001001100101011]， [1001001101010011]， [1001010110010011]， [1001011000101011]， [1001011001110100]， [1001011010100011]， [1001100100101011]， [1001100101001011]， [1001100101010011]， [1001101001011100]， [1001101001110100]， [1001101010010011]， [1001101011010001]， [1001110100010110]， [1001110100110100]， [1001110101001001]， [1010001100101101]， [1010001100110101]， [1010001101001101]， [1010010010111001]， [1010010111001100]， [1010011001011100]， [1010011001110100]， [1010100011001011]， [1010100011011001]， [1010100100110011]， [1010100100111001]， [1010100110001011]， [1010100110001101]， [1010100110010011]， [1010100110100011]， [1010100110110001]， [1010110011000101]， [1011000110010101]， [1011001010110001]， [1011001011000101]， [1011010011000101]， [1011010100011001]， [1100010110010101]， [1100010110011010]， [1100010110100110]， [1100011010100110]， [1100100101011001]， [1100100110101001]， [1100101010011001]， [1100101101010001]， [1100110001010110]， [1100110001011010]， [1101000110010101]， [1101000110010110]， [1101000110011010]， [1101000110100110]， [1101001100010101]， [1101001100011010]， [1101001101000110]， [1101010001101001]， [1101010010011001]， [1101010011001001]， [0010101100101110]， [0011010100110110]， [0011011001101010]， [0101001100101110]， [0101100011001011]， [0101101000111001]， [0110010110101100]， [0110011101010010]， [0110101000110011]， [0111010011001010]， [1000101100110101]， [1001010111001100]， [1001100010101101]， [1001101001010011]， [1010010111000110]， [1010011100110100]， [1010110011010001]， [1100100110010101]， [1100101011001001]， [1101010011010001]， [0010110101100110]， [0011001101101010]， [0011101010010110]， [0101001011100110]， [0101100101110010]， [0101101000111010]， [0101110001011010]， [0110001011011010]， [0110001101101010]， [0110010011101010]， [0110010101001110]， [0110011101001010]， [0110100010111001]， [0110100111000101]， [0110100111010001]， [0110101011001100]， [1001010100110011]， [1001011000101110]， [1001011000111010]， [1001011101000110]， [1001100010110101]， [1001101010110001]， [1001101100010101]， [1001110010010101]， [1001110100100101]， [1010001110100101]， [1010010111000101]， [1010011010001101]， [1010110100011001]， [1100010101101001]， [1100110010010101]， [1101001010011001]， [0011001101010110]， [0011010110100110]， [1100101001011001]， [1100110010101001]。 115. The method of claim 114, wherein, In the first PPDU, the signal corresponding to a signal of 1 before the first sequence.

116. The method of any one of claims 77-99, wherein, The length of the first sequence or the base sequence corresponding to the first sequence is 18.

117. The method of claim 116, wherein, The first sequence or the first sequence corresponding to the base sequence includes one or more of the following sequences: [011001010110111000], [100110101001000111], [111000100101011001], [000111011010100110], [101001011100010011], [000101110110101100], [000110110111010100], [000111001101101010], [000111010110110010], [000111011011001010], [000111011100101100], [001101001110111000], [001101011000101110], [001101011011101000], [001110010010111010], [010010010111001110], [010010011100111010], [010011011100011010], [010100110110111000], [010101101100111000], [010110110001000111], [010110110010001110], [010111010010011100], [011001011010001110], [011001110001011010], [011011000101011100], [011011010001001110], [011100010011011010], [011100010011101001], [011100010101101100], [011100010110100110], [011100011010001011], [011100011100100101], [011100101000101110], [011100111010010010], [011101000110101100], [011101001001011100], [100010111001010011], [100011100100110101], [100100101011100011], [100101110100110001], [100110001110100101], [100111001010001011], [100111010001001011], [101000111001100101], [101001001101110001], [101001011011100011], [101001100101011100], [101001110010011100], [101001110100101011], [101001110110010011], [101001110110101100], [101001110111010100], [101001110111011010], [101001110111100101], [101001110111101100], [101001110111110011], [101001110111110100], [101001110111111001], [101001110111111010], [101001110111111011], [101001110111111100], [101001110111111101], [101001110111111110], [101001110111111111], [101001110111111112], [101001110111111113], [101001110111111114], [101001110111111115], [101001110111111116], [101001110111111117], [101001110111111118], [101001110111111119], [101001110111111120], [101001110111111121], [101001110111111122], [101001110111111123], [101001110111111124], [101001110111111125], [101001110111111126], [101001110111111127], [101001110111111128], [101001110111111129], [101001110111111130], [101001110111111131], [101001110111111132], [101001110111111133], [101001110111111134], [101001110111111135], [101001110111111136], [101001110111111137], [101001110111111138], [101001110111111139], [101001110111111140], [101001110111111141], [101001110111111142], [101001110111111143], [101001110111111144], [101001110111111145], [101001110111111146], [101001110111111147], [101001110111111148], [101001110111111149], [101001110111111150], [101001110111111151], [101001110111111152], [101001110111111153], [101001110111111154], [[101001001110100011]，[101001011001000111]，[101001011100011001]，[101001110001001101]，[101010001101100011]，[101010010011100011]，[101100100011100101]，[110001010110100011]，[110001011010100011]，[110001100100101011]，[110001101000101101]，[110001101010010011]，[110001101100010101]，[110001101101000101]，[110001110010010101]，[110010001011010011]，[110010001110100101]，[110010010101110001]，[110010110001000111]，[110100011010010011]，[110100101000100111]，[110101000101100011]，[110101001001100011]，[110101001001110001]，[111000100010110101]，[111000100010110110]，[111000100011011010]，[111000100101001101]，[111000100110100101]，[111000101001001101]，[111000101010010011]，[111000101100101001]，[111000110010010101]，[111001000101001011]，[111010001001010011]，[111010010010001110]，[001101011010001110]，[001101101010001110]，[001110001010110110]，[001110101000110110]，[010001110011011010]，[010100110110001110]，[011000110100101110]，[011000110101110100]，[011001101011100010]，[011010001101110001]，[011011000111001010]，[011011010001000111]，[011011010100011100]，[011100010010010111]，[011100011011000101]，[011100100010110110]，[011101000101001110]，[011101001010001110]，[100010110110001101]，[100011100100101011]，[100011101010010011]，[100011101100010110]，[100011101100100101]，[100100111000110101]，[100100111010100011]，[100101001110001011]，[100111011001010001]，[101000101101100011]，[101000110001101101]，[101001011100110001]，[101011000111001001]，[101011001001000111]，[101101100011000101]，[101101101000110001]，[101110001100100101]，[110001010010110011]，[110001010111001001]，[110001101000101011]，[110001101010001011]，[110001110101001001]，[110010100100010111]，[110010100110001011]，[110011010010100011]，[110100010010100111]，[110100010011100011]，[110100010100111001]，[110100010101100011]，[110100110001000111]，[110101000111001001]，[110110010010100011]，[111000100010101101]，[111000100011010011]，[111000100100110101]，[111000101001011001]，[111000110010001011]，[111001010010001011]，[000110110101110100]，[000110111010110100]，[001010110110011100]，[001010111000110110]，[001010111011011000]，[001011010111011000]，[001011101011000110]，[001011101011011000]，[001110011011010100]，[001110100011010110]，[001110100100101110]，[010001110101100110]，[010011011010111000]，[010100111000110110]，[010110001110110010]，[010110011010001110]，[010110110011100010]，[011000111010001101]，[011001010110001110]，[011001110001010110]，[011010001011001110]，[011010001110001011]，[011010001110110001]，[011010100011100110]，[011010110001011100]，[011010111000100110]，[011011000111010100]，[011011100011000101]，[011100010100101110]，[011100010110101100]，[011100011011001010]，[011100100100101110]，[011101000110001101]，[011101001001001110]，[011101001011000110]，[100010100110111001]，[100010100111011001]，[100011000101101101]，[100011001011101001]，[100011001110100101]，[100011011100010110]，[100011100101001101]，[100011101001100101]，[100100101011000111]，[100100111000101011]，[100101001100010111]，[100101001101000111]，[100101001110100011]，[100101110010001110]，[100110111000101001]，[100110111001010001]，[101000110001110110]，[101000110011100101]，[101000110100100111]，[101000110110001110]，[101001001110001110]，[101001100101110001]，[101001100111000101]，[101001101001000111]，[101001110001100101]，[101001110011000101]，[101010001110010011]，[101010010011000111]，[101011010001000111]，[101100010111000110]，[101100011000101110]，[101100011010001011]，[101100011011010001]，[101100011100010110]，[101100100101000111]，[101100101001000111]，[101100101001110001]，[101101000100011011]，[101101000100011101]，[101101000100111001]，[101101000101100011]，[101101010001000111]，[101110001001001011]，[110001000111010011]，[110001001011001011]，[110001001101001011]，[110001010110001101]，[110001011100100101]，[110001011100101001]，[110001110010001011]，[110010001110001011]，[110010010101100011]，[110010010110001011]，[110010011100010101]，[110010100010111001]，[110010100110100011]，[110010100111010001]，[110010101001000111]，[110010110100010011]，[110100010011000111]，[110100010100100111]，[110100010110001101]，[110100011001010011]，[110100011100010011]，[110100100010111001]，[110100100011100011]，[110100100100011101]，[110100101100100011]，[110100110100100011]，[110101000100100111]，[111000100011001011]，[111000100101010011]，[111000100101100101]，[111001001000101011]，[111001001010001011]，[111001001011000101]，[111010001100101001]，[011100010110011010]，[100111010001010011]，[101001001110001101]，[101001100011100101]，[101011001001110001]，[101100011100100101]，[101110001000101101]，[110001010010011011]，[110001110001001011]，[110010001101001011]，[110010111000100011]，[110100010110001110]，[110100011100010110]，[110100011100101001]，[110100101100010011]，[110110001000101101]，[011100011010100110]，[011100110100010110]，[110001011001010011]。， 118. The method of any one of claims 77-99, wherein, The length of the first sequence or the base sequence corresponding to the first sequence is 20.

119. The method of claim 118, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [00101101011100010011], [01101011010001000111], [11000111010001001011], [00110111000101001011], [11001000111010110100], [11001011010001000111], [00011011011000101011], [00011101110100101001], [00011101110100101100], [00101011100100100111], [00101101110001011100], [00101101110100011100], [00110100101110111000], [00111010001110110100], [10010100101110111000], [11000101110001001011], [11010010001011100011], [11010010001110100011], [11010010100011101100], [11010100011011011000], [11100010001011010011], [11100010001011010110], [11100100100111010100].

120. The method of any one of claims 77-99, wherein, The first sequence or the base sequence corresponding to the first sequence has a length of 22.

121. The method of claim 120, wherein, The first sequence or the first sequence corresponding to the base sequence includes one or more of the following sequences: [0011010010101110111000], [0011101101001000101110], [0011101110100011010010], [0100101100010111011100], [0100101110100011001110], [0101001001101110001110], [0101100101110010001110], [0110001001110101110100], [0110100111000100010111], [0110110001110001010110], [0111000100010111001011], [0111000100111010011010], [0111000100111010110100], [0111000101001011101100], [0111000111010001001011], [0111000111011001001010], [0111010001100010110110], [1000110111001010001011], [1000110111001101000101], [1000111010010100011011], [1001010111000100100111], [1001011011000101000111], [1001110001011100100101], [1001110110100010100011], [1010110100010011000111], [1010110110010001110001], [1011000100101011100011], [1011010001100111000101], [1011010011101000100011], [1011010100010011000111], [1011100010010110001011], [1100010001011100101101], [1100011001011010001011], [1100011101010010001101], [1100100101010001110011], [1100101100011010100011], [1100101101010001000111], [1100110001011010001011], [1100110011010001010110], [1100110100010111000111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [1100110110010001010111], [110011[1101001000101011100011]，[1101001000111000101110]，[1101010010010011000111]，[1110001000101011010011]，[1110001010001101101001]，[1110001011000101001101]，[1110001011001010001101]，[1110001101010001001101]，[1110001110010010010101]，[1110010010011000101011]，[1110011000101101000101]，[1110100010001110010110]，[0001011101110010110100]，[0001110111010100101100]，[0010110100111011101000]，[0010110101110010001110]，[0010111001011011100010]，[0010111010110001001110]，[0010111010111001000110]，[0011011100010100101110]，[0011100101101000101110]，[0100011101101001110100]，[0100110100011101110010]，[0100111011100010110010]，[0101110001000110110110]，[0110001010111000110110]，[0110001011100011010110]，[0110010010101110001110]，[0110100100010111011100]，[0110100101110010001110]，[0110101110001000110110]，[0110110001110101000110]，[0110110100011000101110]，[0111000100111010010110]，[0111000101100101001110]，[0111000111010100100110]，[0111001000111000101101]，[0111001100010111010010]，[0111010001001011011100]，[0111010001110001001011]，[0111010010010001101110]，[0111011000100100101110]，[1000101110011101001001]，[1000110011101000101101]，[1000111000100110110101]，[1000111010001001011011]，[1000111010010001101011]，[1000111011101000110100]，[1001001011100111010001]，[1001001110011101000101]，[1001110100100101000111]，[1010001001110011100101]，[1010001010011100100111]，[1010001011010001100111]，[1010001101100111000101]，[1010001101110001100101]，[1010001110010100100111]，[1010001110011000101101]，[1010001110011011000101]，[1010011000111011000101]，[1010100100100111000111]，[1010110001110001001101]，[1010110010001011000111]，[1011000100011101001101]，[1011000111001000101110]，[1011001000101011000111]，[1011001000110101000111]，[1011001000111000110101]，[1011001010001101000111]，[1011001010110001000111]，[1011001110001000101101]，[1011010001011100011001]，[1011010001011100110001]，[1011010011000100010111]，[1011010011100010001011]，[1100010011010110100011]，[1100010011101001001011]，[1100010101100011010011]，[1100010110010100011011]，[1100010110011010100011]，[1100011000101011001011]，[1100011001010110001011]，[1100011010001001011011]，[1100011010100010110011]，[1100011011010010001011]，[1100011100100100101011]，[1100011101000100101101]，[1100011101010001001011]，[1100100100011101010011]，[1100100110100101000111]，[1100101010010011100011]，[1101000101001110010011]，[1101000110100100011101]，[1101000110101001100011]，[1101000111000100100111]，[1101001000100111000111]，[1101001000101110001110]，[1101001010001100100111]，[1101001101010001100011]，[1101001110100010001110]，[1101010001100100100111]，[1101010010010011100011]，[1101100010100101110001]，[1101100010100110100011]，[1101101001000101110001]，[1110001000110101001101]，[1110001001100101001011]，[1110001001101000110101]，[1110001010010010111001]，[1110001010010110010011]，[1110001010110001001101]，[1110001100100100101011]，[1110001110010001001011]，[1110010001011001010011]，[1110010010001110001011]，[1110010010001110101001]，[1110010011000101001011]，[1110010011100101000101]，[1110010100110010001011]，[1110100010001100101101]，[0010110001011101110001]，[0011011101001010001110]，[0011101110100010010110]，[0110001011011010001110]，[0110101000111000110110]，[0110101100011101000110]，[0110110001000111010110]，[0110110001010111000110]，[0110110110001000111010]，[0111000101101101000110]，[0111001000110101110100]，[0111010001001110001101]，[0111010001100101001110]，[0111010010100011101100]，[1000101110011100100101]，[1001001110010100010111]，[1001100011101000101101]，[1010001011001110110001]，[1010001011100111001001]，[1010010011100111010001]，[1010011100111001000101]，[1011001000111000101101]，[1011001011100010001101]，[1011010001000111001101]，[1011010001110001001101]，[1011010001110001001110]，[1011010010001011100011]，[1011100010010001011011]，[1100010100010110111001]，[1100010101100110100011]，[1100010110101100100011]，[1100011100100101010011]，[1100011101010010010011]，[1100100011100101010011]，[1100100100101011000111]，[1100100100101011100011]，[1100100111001010001011]，[1100101001101000100111]，[1100101010011100010011]，[1100101011100010010011]，[1100101100101001000111]，[1100111000101010010011]，[1101000100101101100011]，[1101000100110010100111]，[1101000101001110110001]，[1101000101101000110011]，[1101000101101001100011]，[1101001001011100100011]，[1101001010011001000111]，[1101001011100010001101]，[1101011000100101110001]，[1101101000100100011101]，[1110001001010011010011]，[1110001100100010101101]，[1110001100100010110101]，[1110001101000100110101]，[1110010010100111000101]，[1110100010100111001001]，[1010010011101000111001]，[1011000100011101001011]，[1101101001000101100011]。， 122. The method of any one of claims 77-99, wherein, The first sequence or the base sequence corresponding to the first sequence has a length of 24.

123. The method of claim 122, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [000110110001011010111010], [000110110011100101101010], [001011011100111010001010], [001101101011010001000111], [001110111001010100110100], [011010100011100010011011], [011100010111001000101101], [100010111010010100111001], [100011000101110110110100], [100011101000110111010010], [100011101100100100101011], [100100101110001100010111], [100101100011011000101011], [100110100110101001000111], [100111001010010111010001], [101001010111000110010011], [101011101001000110110001], [101101001000110001011101], [101101001110010001000111], [110001000110101011001011], [110001010100111010010011], [110001110010001010110110], [110010001011100011010110], [110010010100101110111000], [110100100011011000111010], [110100100100010111001110], [110101000110110001101001], [110101001001001101110001], [110110100100011000101110], [111000101001010011011001], [111001000100011101001011], [111001001110100101000101], [000101110111010100101100], [000110011011101010010110], [000110110011100101010110], [000110110011100101101010], [000110110011100101101101], [000110110011100101110001], [000110110011100101110011], [000110110011100101110100], [000110110011100101110101], [000110110011100101110110], [000110110011100101111001], [000110110011100101111010], [000110110011100101111011], [000110110011100101111100], [000110110011100101111101], [000110110011100101111110], [000110110011100101111111], [000110110011100110001011], [000110110011100110001100], [000110110011100110001101], [000110110011100110001110], [000110110011100110010011], [000110110011100110010100], [000110110011100110010101], [000110110011100110010110], [000110110011100110011011], [000110110011100110011100], [000110110011100110011101], [000110110011100110011110], [000110110011100110100011], [000110110011100110100101], [000110110011100110100110], [000110110011100110100111], [000110110011100110101011], [000110110011100110101100], [000110110011100110101101], [000110110011100110101110], [000110110011100110101111], [000110110011100110110001], [000110110011100110110011], [000110110011100110110100], [000110110011100110110101], [000110110011100110110110], [000110110011100110110111], [000110110011100111001011], [000110110011100111001100], [000110110011100111001101], [000110110011100111001110], [000110110011100111[001001101110001110100101]，[001001110010110001010111]，[001001110111000111010010]，[001100101110101101011000]，[001110001001101101011010]，[001110001001101101101010]，[001110010011101101000101]，[010100101110001110110010]，[010100110001101101110100]，[010100111000101110110010]，[010101101101100100011100]，[010110011100100100010111]，[010110100011100010011011]，[010110100011101000100111]，[010110101001101100111000]，[010110101110001000100111]，[010111000110110001001011]，[010111010010001101100011]，[011000110101101000101110]，[011001100101110101101000]，[011010010101110110011000]，[011010010110001011101100]，[011010011101000100011011]，[011011000110100111010100]，[011011010100010011100011]，[011100111010001001001011]，[100100101110010101000111]，[100100111011010001010011]，[100101001100101110001011]，[100101010001110100100111]，[100101100010111000100111]，[100110010010110101000111]，[101000111001001110110100]，[101001010110010011000111]，[101001011100011101100100]，[101001100011011011101000]，[101010001101001110010011]，[101010010010011011100011]，[101010010110010011000111]，[101011000101100100011101]，[101011010011000100010111]，[101100100010111000110101]，[101100110010100101000111]，[101101000111000100011011]，[101101001000101110110001]，[101101001000111010001101]，[101110001001101000110101]，[101110100011000100101101]，[110001110110010010010101]，[110010101000111010010011]，[110011010001010010100111]，[110100010100101110010011]，[110100011101001100101001]，[110100101011001000111001]，[110100101110001000100111]，[110110001000110100110101]，[110110001000111000101101]，[110110010001110001011010]，[111000101001010011001101]，[111000101011010010011001]，[111000101011010011001001]，[111000110010011010010101]，[111001000111010001101001]，[111001001001100011010101]，[111001001011000101010011]，[111001001011100010101001]，[111001100100010101101001]，[111010001100011101001001]，[111010010100010110011001]，[000101101011101001100110]，[000101110100110011100101]，[000101110101101001100110]，[000101110110110001100101]，[000101110111001101001010]，[000110101101011101001100]，[000110110100011101010110]，[000110110110011100101010]，[000110111000101110010110]，[000110111001010110010110]，[000110111010001110100101]，[000110111010011010100110]，[000110111011100010100101]，[000110111011100010110100]，[000111001101100101011010]，[000111001101100101101010]，[000111010100101100110110]，[000111010100101101100110]，[000111010101100010110110]，[000111010110011010110100]，[000111010110101100100110]，[000111011101001010010011]，[000111011101100011010010]，[000111011101100101001010]，[001001011011100111010001]，[001001101110001110101001]，[001001110111001011001010]，[001001110111010001101001]，[001010111001001110010110]，[001010111011001011000110]，[001011001010100111011100]，[001011010001110111011000]，[001011010100110111000110]，[001011010110011010111000]，[001011011101100011001010]，[001011100010110011010110]，[001011101001010011100110]，[001011101001100111001010]，[001101001010111011101000]，[001101010111000101101100]，[001101010111001011011000]，[001101011101001000110110]，[001101100010110101110100]，[001101100011010011101010]，[001101100111000101011010]，[001101101000110101011100]，[001101101000111010101100]，[001101110011010001011010]，[001101110100011010010110]，[001101110100011100101001]，[001110001101110101001001]，[001110101011000101101100]，[010001011100111011010010]，[010001110110010111001010]，[010010101110001110110010]，[010010110001101110111000]，[010010110111000101110010]，[010010110111001110100010]，[010010110111010001001110]，[010010111000111011100100]，[010011001101011010111000]，[010011011100011101001010]，[010011100111010001011010]，[010011101000111011010010]，[010100010110111001001110]，[010100010111001110110100]，[010100101001101110111000]，[010100101100111011101000]，[010100110001101110110100]，[010100110100111011100100]，[010101001110011011011000]，[010101101001101100111000]，[010110001100110100010111]，[010110010110001000110111]，[010110100010110011101100]，[010110101000111001101100]，[010110101101100100011100]，[010111010110100011011000]，[011000110100110111010100]，[011000111011001010110100]，[011001001101011010111000]，[011001010110010111011000]，[011001011001010110111000]，[011001100101101011101000]，[011001101101001010111000]，[011001110010100101110100]，[011010011010100111011000]，[011010011100100111010100]，[011010101001110011011000]，[011010101110001011011000]，[011010110001110100010011]，[011010110011010001110100]，[011011000100101110101100]，[011011001101001010111000]，[011011010001101010111000]，[011011010001110011101000]，[011100010011011011010100]，[011100100010111011010010]，[011100100111011010001010]，[011101000101101011000110]，[011101000110001001011011]，[100010111001110110100100]，[100011011000100101110101]，[100011011101000100101101]，[100100101011101100011100]，[100100110010110101000111]，[100100111001011000101011]，[100101001110001011101100]，[100101010110001100100111]，[100101011100011101100100]，[100101100010111011100100]，[100101100101011000100111]，[100101101001110100010011]，[100101101010001001100111]，[100110001101011010001011]，[100110011010010100010111]，[100110101001101000100111]，[100110110010100101000111]，[100111000100110101001011]，[100111001001101000101011]，[100111001011001000101011]，[101000101001011100100111]，[101000101101110010011100]，[101001010001110111011000]，[101001010010011011100011]，[101001011100010111011000]，[101001011101000110001101]，[101001011101001100010011]，[101001100011011101101000]，[101001101001110111001000]，[101010110001100100100111]，[101011000110011010001011]，[101011000111010001001101]，[101011001011000100011011]，[101011001110010001001011]，[101011001110010010001011]，[101011010001110001001101]，[101011010110010001000111]，[101011101000110001001011]，[101100010111000100101101]，[101100011000101110100101]，[101100100011100010101101]，[101101000100111010001110]，[101101010001110001001101]，[110001101100010010111010]，[110010001011100101101001]，[110010010111000101010011]，[110010010111001010100011]，[110010011000111010100101]，[110010011100101100010101]，[110010011101001010001011]，[110010100010110111001001]，[110010101000110100100111]，[110010110101000100010111]，[110100010010011100110101]，[110100010110011000110101]，[110100010110101100011001]，[110100100010011100110101]，[110100100011000101110101]，[110100101001100101000111]，[110100110101011000100011]，[110101000100110100111001]，[110101000101100100111001]，[110101000110100111001001]，[110110001000101110010110]，[110110001101001110101000]，[110110010001110001010110]，[111000100010011010110101]，[111000100010011100101101]，[111000100101011001011001]，[111000101001100101001011]，[111001000100011101011010]，[111001000101100101011001]，[111001000101110001011010]，[111001000110101001101001]，[111001001100011010010101]，[111001001100011010101001]，[111001010010100010110011]，[111010001000101011010011]，[111010001000110010110101]，[111010001001001110011010]，[111010001010010110011001]，[111010001011001100011010]，[111010010001001110011010]，[111010100011010011100100]，[111011000100011010011010]，[000101011100101100011011]，[000101101110110001100101]，[000110110100111010101100]，[000111011010100110100110]，[001010110110110010001110]，[001011011011101000110001]，[001011011100100111000101]，[001011101011010001101100]，[010011011101000111001010]，[010101101001110011011000]，[010110100010111001110010]，[011000110110010111010100]，[011010011101000111011000]，[101010010110001100100111]，[110001110110010010100101]，[111000110010011010100101]，[010100111001100101110100]，[100110011010001010010111]，[101001110011001011101000]。， 124. The method of any one of claims 77-99, wherein, The first sequence or the base sequence corresponding to the first sequence has a length of 26.

125. The method of claim 124, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [01101001000110111010001110], [01110001011101100010010110], [01110001110010001010110110], [01110100011000111011010010], [10001011100111000100101101], [10100101100011101000100111], [10100101110010111000100011], [10110001001011101000111001], [10110001101101000101000111], [10110010001110001110100101], [10111000110001011100100101], [11000100011101001110100101], [11000110011101000101001011], [11000111001010110010001011], [11010010010111010001100011], [11010010100010111001100011], [11011000110110100010100011], [11100010001101010011010011], [11100100010101100011010011], [11100100011011010001010011], [11101000110100011001010011], [01001011011100011000101110], [01100010111011100010110100], [01110001001011011000101110], [01110001011011010001001110], [01110001101101001000101110], [01110010001101011100010110], [10010110100111000100010111], [10011100010111001000101101], [10100011100101101000100111], [10100101110001110110010001], [10110001100011101000101101], [10110001110001011100100101], [10111001101101000101000111], [11000101101101000101000111], [11000110001101001110100101], [11000111001101000101000111], [11010001101101000101000111], [11010010001101001110100101], [11010010100010111001100101], [11011000110110100010100101], [11100010001101001110100101], [11100100010101100011000101], [11100100011011010001000101], [11101000110100011001000101], [01001011011100011000101101], [01100010111011100010110101], [01110001001011011000101101], [01110001011011010001001101], [01110001101101001000101101], [01110010001101011100010101], [10010110100111000100010101], [10011100010111001000101101], [10100011100101101000100101], [10100101110001110110010001], [10110001100011101000101101], [10110001110001011100100101], [10111001101101000101000111], [11000101101101000101000111], [11000110001101001110100101], [11000111001101000101000111], [11010001101101000101000111], [11010010001101001110100101], [11010010100010111001100101], [11011000110110100010100101], [11100010001101001110100101], [11100100010101100011000101], [11100100011011010001000101], [11101000110100011001000101], [01001011011100011000101101], [01100010111011100010110101], [01110001001011011000101101], [01110001011011010001001101], [01110001101101001000101101], [01110010001101011100010101], [100101101[10110010100011100010011101]，[10110100011000111010001011]，[11000100111010100110100011]，[11000101110010110010100011]，[11000101110100101000110011]，[11000110110001010001011011]，[11001000101011100011010011]，[11001000111010010110001011]，[11001010010011101001000111]，[11001010100011100100100111]，[11001011000110101000100111]，[11001011001010110001000111]，[11001100010010110100010111]，[11010001001010110011100011]，[11011010001010001101100011]，[11011100010001011000101101]，[11100010001011101001010011]，[11100010100011011010010011]，[11100010100110100100011011]，[11100010110001011001010011]，[11100100100111000101010011]，[11101000101001000110100111]，[11101001000101001110010011]，[00101101000111011101000110]，[01101000111010110001001110]，[01101001011101000110001110]，[01101101010001001110001110]，[01110001100010111010010110]，[01110001101011001000101110]，[01110010001011011010001110]，[01110010001110100100101110]，[01110011000101101000101110]，[01110100010010110110001110]，[01110100010110100011001110]，[01110100011011010010001110]，[01110101001110001001001110]，[10001001101110001110100101]，[10100100101110100011000111]，[10100100111000111010001101]，[10100100111010001100011101]，[10100100111010001110001101]，[10100101110001110001001101]，[10101100100011100010010111]，[10110001100011010001011101]，[10110100010011101000111001]，[10110100010100011101100011]，[10110100010111000110001101]，[10110100100011100111010001]，[10111001000111000101001101]，[10111010001011000110001101]，[11000101000101101100011011]，[11000101001101001110100011]，[11000101100101011100100011]，[11000110001011101001001011]，[11000110111000101000101101]，[11001000111010100011010011]，[11001001011011000101000111]，[11001001110010100010010111]，[11001010001011011000100111]，[11001010010111010001000111]，[11001010011000101100010111]，[11001010011010001101000111]，[11001011000101011100010011]，[11001011000111010100010011]，[11001100010100101110100011]，[11001100011101000101001011]，[11010001011010011000100111]，[11010001101001011100010011]，[11010001110001101010010011]，[11010010100010111000110011]，[11011000100101100101000111]，[11100010100010110110001101]，[11100011000101110100100101]，[11100100010111000110100101]，[11100100011001011010001011]，[11100100100110001010100111]，[11100101001000110100010111]，[11100101010001100100100111]，[11101000100011100101101001]，[11101000101100010010100111]，[11101000101101001000110011]，[11101001000111000100110101]，[01110100100101110001001110]，[10110001011100011100100101]，[11001001010110001110001011]。， 126. The method of any one of claims 77-99, wherein, The first sequence or the base sequence corresponding to the first sequence has a length of 28.

127. The method of claim 126, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [1110001010100111001001001101]，[1110101000100101110010011100]， [0001011101011010110001101100]，[0001011101011100101011011000]， [0001011101101010010011100011]，[0001101100110101101011101000]， [0001101101100011101010110100]，[0001101110001101001101010110]， [0001110101011000110110110010]，[0001110101110010001101101001]， [0001110110101001110010110010]，[0010011011100010101101011100]， [0010110111010010001110100011]，[0010111010001011010011100110]， [0010111011001001010110001110]，[0011001110100010111001011010]， [0011001110100101101000101110]，[0011001110101101001011101000]， [0011010111010110100011011000]，[0011100010110101001101110100]， [0011100011011010100100010111]，[0011100100111010010001010111]， [0011100101011101000100100111]，[0011100101110010010111010100]， [0011101000101110111001010010]，[0011101000110111010110010100]， [0011101011010100011101100100]，[0011101011100100011010010110]， [0100010111011000111001011010]，[0100011010110111010001110100]， [0100101101110100010111001100]，[0101001011101001101110011000]， [0101011000110110110010111000]，[0101011100111001001001110100]， [0101101001110001101110100010]，[0101101110001101000100010111]， [0110100100111011000101000111]，[0110100101100010011101011100]， [0111000101000110111011010010]，[0111000110101001001101110100]， [0111010001001110001101001011]，[1000101110100101101000110011]， [1000101110110001110010110100]，[1000111001010110110010001011]， [1000111001010110110100010011]，[1000111010111001000100101101]， [1001001011100110001010100111]，[1001010100110100111000100111]， [1001011001010100111001000111]，[1001110011010100100100010111]， [1010001110010001101101110100]，[1010001110010110110100010011]， [1010010010111011000101100011]，[1010010110001110010001011101]， [1010100011000110110110001011]，[1010110010110010001100010111]， [1010110100010110010001100111]，[1010110100110001100100010111]， [1011001001001110010101000111]，[1011001011000110101001000111]， [1011010010001011101000110011]，[1011010010011100010100011011]， [1011010010011101100010100011]，[1011010100011100010010011011]， [1011010110001000101110100011]，[1100010100011011100101101001]， [1100010100101011100010011011]，[1100010111001000101001101011]， [1100011010100010111011011000]，[1100011101001010110010001011]， [1100100010110110101001110001]，[1100100011010011101010001011]， [1100110001010010110100010111]，[1100110001011101000110100101]， [1101000100110101001011100011]，[1101000101001101001110110001]， [1101000101011100101100010011]，[1101000101101001010001100111]， [1101000101110100101100011001]，[1101001000101101110001011100]， [1101010010100011100010011011]，[1101011001010001001110100011]， [1101100010100101001101000111]，[1101100100011100010100101011]， [1101100100011101010010100011]，[1101100100100011100010101101]， [1110001001110010101001101001]，[1110001011001001001110010101]， [1110001011001010010100011011]，[1110010001110010110010101001]， [1110010010001011101010011100]，[1110010010011100010101001011]， [1110010011001010010100010111]，[1110010011010001010010100111]， [1110010011100010100010010111]，[1110010011101001010001010011]， [1110010100010100101110010011]，[1110010100101000101100100111]， [1110100010010101101100011100]，[1110100010110100101000110011]， [1110100100010100011100100111]，[0001011100111011001011001010]， [0001011101101101010011000110]，[0001011101110100111000100101]， [0001101010111001100010110110]，[0001101011010111010011011000]， [0001101100011101011101101000]，[0001110101110011001001011010]， [0001110110001101010110010110]，[0010100110101110110001011100]， [0010110101011100011011011000]，[0010111001001001110011101010]， [0011001110100010111011010010]，[0011010011011101010010001110]， [0011011000101101011101011000]，[0011011101001001010110001110]， [0011100011101100100101011010]，[0011100101110010001011011010]， [0011101000111011010001001011]，[0101001011001110011011101000]， [0101001101001101110011101000]，[0101101001001100111010111000]， [0101101001110100010111001100]，[0101101101000100111010011100]， [0101110001101110010010001011]，[0110100011101011000100011011]， [0110101000110111011001011000]，[0111000110101001001011101100]， [0111001000110100110101110100]，[0111010001011010010111001100]， [1001001100101011100010100111]，[1001010111001000100110100111]， [1001100011010010111010001011]，[1010010001110010111011101000]， [1010010110001011101000110011]，[1010010110110011000101000111]， [1100010100011011100100101101]，[1100010111010001000110101101]， [1100011010001101110100100101]，[1100100010110110100111000101]， [1100100111010010100010100111]，[1100101100100010101101110001]， [1100110001011101000100101101]，[1101000100100111011000111010]， [1101000110110110001100010101]，[1101000111010001001010011101]， [1110001001010110001101001101]，[1110010110010001001110101001]， [1110011000101001011010001011]，[1110100010100101001100100111]， [1110100010100101001110010011]，[0001010111011010001101100011]， [0001011011101011100011011000]，[0001011101001011010111001100]， [0001011101100111001101001010]，[0001100111010110100101110100]， [0001101001101110110001010110]，[0001101011100010101100110110]， [0001101100010110101110101100]，[0001101100101110101101011000]， [0001101101010011101011101000]，[0001101101110100010101100011]， [0001110100110101101011100100]，[0001110100110110110001101010]， [0010011011011100011101010010]，[0010011011100011101011010100]， [0010011101011010110010111000]，[0010011101011100011011010010]， [0010011101110010100011101001]，[0010110100111000110111010001]， [0010111010110010110001001110]，[0010111011001010110100011100]， [0011011000110101101011101000]，[0011011100101100010101110100]， [0011101011100100011011010010]，[0100101011100011101101100100]， [0100101101100010011101011100]，[0100101101100011101011100100]， [0100110100111001010110111000]，[0101110001101001001011101100]， [0110101011001011000111011000]，[0110110100011001110101011000]， [1000110111001011001010001011]，[1000111011010100010011010011]， [1001011011000100111010111000]，[1001011100010100111011100100]， [1010100111001001001101000111]，[1011010010001001110101110001]， [1011100101001000101110001011]，[1011101000100111000110100101]， [1100010111000100101110110100]，[1100011100100101011011101000]， [1100100111001010010100010111]，[1100101000101001011100100111]， [1100110001011010010111010001]，[1101000100110110101001110001]， [1101001010100011100100100111]，[1101001011000111001000101110]， [1101100010001101011100010110]，[1101100010100011100100101101]， [1110010101000110011101001001]，[1110100010010010101100111001]， [0001101011101011010001101100]，[0010101101011100011101100100]， [0010111010010110101110011000]，[0100101101110110001010001110]， [0110001100101011011011101000]，[0110100110101011000110111000]。 128. The method of any one of claims 77-99, wherein, The first sequence or the base sequence corresponding to the first sequence has a length of 30.

129. The method of claim 128, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [110011100010100010011101001011]，[110100010111001001010011100011]， [110100101110001100010001011101]，[110100101110010001010001110011]， [111001000110001011101001001011]，[111001010001101001001100010111]， [011010011101001000111010001110]，[101100010111000100011100101101]， [101101001110001000111010001101]，[110001011001000111011010100011]， [110001110010100100111010001011]，[110010010001110010101110001011]， [110100011101010011100010010011]，[110110001001110001101000101011]， [111010001100100101100010100111]，[011100010111000100101110010110]， [101001001011100011100010011101]，[101110010001110001110100100101]， [110001010110111000100110100011]，[110100100101110100011000100111]， [110101000101100011100100011011]，[101100010111000111000100101101]， [101101001000111000111010001101]，[111010001010011001000110100111]， [101011011010001000100111000111]，[111000111001000100010110110101]， [111001011000100110010100010111]，[101110001001110100010010010111]。 130. The method of any one of claims 77-99, wherein, The first sequence or the base sequence corresponding to the first sequence has a length of 32.

131. The method of claim 130, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [00011100111010001101110100100101]； [00101110100010110101101110011000]； [00110111010010100100111000111010]； [01000111011011100010110110001010]； [01011011010001001110100011000111]； [01011100011100100101001011101100]； [01100010011101011010011010111000]； [01110001110110010001001010010111]； [00010110101101110110010001110001]； [00011001110110101101000101110100]； [00011011010100111000101110100110]； [00011101011001011010111001000110]； [01010001101101000111011011100010]； [01100101110100011100101011011000]； [11100100101011000111010001011001]； [10001110001001101110110101101000]； [10100011100011011010110100010011]； [10100100101110110001011100111000]； [10111000100100011101001001110101]； [11001000101101011011000111000101]； [11010001011101001010010001100111]； [11100010100110100101000110111001]； [11100011000101110010001011011010]； [11100110001001010010111010001011]； [10011010001011100011010100100111]； [10011101100010100101100101000111]； [10101110010010111000100100011101]； [11101001010010001001101110001110]。 132. The method of any one of claims 77 and 80-99, wherein, The first sequence or the base sequence corresponding to the first sequence has an odd length.

133. The method of any one of claims 77-132, wherein, The first sequence or the base sequence corresponding to the first sequence is an m-sequence.

134. The method of any one of claims 77, 79-99, and 132-133, wherein, The first sequence or the base sequence corresponding to the first sequence has a length of 7.

135. The method of claim 58, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [1001011], [1001110].

136. The method of any one of claims 77, 79-99, and 132-133, wherein, The first sequence or the base sequence corresponding to the first sequence has a length of 15.

137. The method of claim 136, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [100010011010111], [100011110101100].

138. The method of any one of claims 77, 79-99, and 132-133, wherein, The first sequence or the base sequence corresponding to the first sequence has a length of 31.

139. The method of claim 138, wherein, The first sequence or the base sequence corresponding to the first sequence comprises one or more of the following sequences: [1000010010110011111000110111010]； [1000010101110110001111100110100]； [1000010110101000111011111001001]； [1000011100110111110100010010101]； [1000011010100100010111110110011]； [1000011001001111101110001010110]。 140. The method of any one of claims 77-132, wherein, The first sequence or the base sequence corresponding to the first sequence is a gold sequence.

141. The method of claim 140, wherein, The m sequence associated with the gold sequence has a length of 7, 15 or 31.

142. The method of claim 141, wherein, The m sequence comprises one or more of the following sequences: [1001011]； [1001110]； [100010011010111]； [100011110101100]； [1000010010110011111000110111010]； [1000010101110110001111100110100]； [1000010110101000111011111001001]； [1000011100110111110100010010101]； [1000011010100100010111110110011]； [1000011001001111101110001010110]。 143. The method of any one of claims 77-142, wherein: The synchronization field is an AMP synchronization field; or The first device is an AP and the second device is an AMP device; or The first device is an AMP device and the second device is an AP.

144. The method of any one of claims 77-143, wherein: The first PPDU comprises a wideband portion and / or a narrowband portion, and the synchronization field is located in the narrowband portion; or Each portion in the time domain of the first PPDU occupies the same bandwidth; or The first PPDU does not comprise a legacy preamble portion; or The first PPDU comprises only a narrowband portion and does not comprise a wideband portion.

145. The method of claim 144, wherein: The first PPDU is a downlink PPDU, the first PPDU comprises a wideband portion and / or a narrowband portion, and the synchronization field is located in the narrowband portion; or The first PPDU is a downlink PPDU, each portion in the time domain of the first PPDU occupies the same bandwidth, or the first PPDU does not comprise a legacy preamble portion, or the first PPDU comprises only a narrowband portion and does not comprise a wideband portion; or The first PPDU is an uplink PPDU, the first PPDU comprises a wideband portion and / or a narrowband portion, and the synchronization field is located in the narrowband portion; The first PPDU is an uplink PPDU, each portion in the time domain of the first PPDU occupies the same bandwidth, or the first PPDU does not comprise a legacy preamble portion, or the first PPDU comprises only a narrowband portion and does not comprise a wideband portion.

146. The method of any one of claims 77-145, wherein: The first PPDU is a downlink PPDU, and the second device is an AMP device that communicates based on a backscatter communication manner or an active emission communication manner; or The first PPDU is an uplink PPDU, and the first device is an AMP device that communicates based on a backscatter communication manner or an active emission communication manner.

147. The method of any one of claims 77-146, wherein, The first PPDU comprises a fourth sequence, and the fourth sequence is used for clock calibration by the second device.

148. The method of claim 147, wherein, The fourth sequence is located in the synchronization field.

149. The method of claim 147 or 148, wherein, The fourth sequence is located before the first sequence in the time domain, or the fourth sequence is located after the first sequence in the time domain.

150. The method of claim 147, wherein, The fourth sequence is located in an information field of the first PPDU other than the synchronization field.

151. The method of claim 150, wherein, The information field where the fourth sequence is located is located before the synchronization field.

152. The method of any one of claims 77-150, wherein, The synchronization field is the first information field of the first PPDU in the time domain.

153. A communications device, characterized by The communication device is a first device, and the communication device includes: a communication module, configured to send, to a second device, a first physical layer protocol data unit (PPDU); The first PPDU includes a synchronization field, and a sequence in the synchronization field is a first sequence.

154. A communications device, characterized by The communication device is a second device, and the communication device includes: a communication module, configured to receive, from a first device, a first physical layer protocol data unit (PPDU); The first PPDU includes a synchronization field, and a sequence in the synchronization field is a first sequence.

155. A communications device, characterized by A communication device includes a transceiver, a memory, and a processor. The memory is configured to store a program. The processor is configured to invoke the program in the memory and control the transceiver to receive or send a signal, so that the communication device performs the method in any one of claims 1 to 76 or 77 to 152.

156. An apparatus, comprising: A device includes a processor configured to invoke a program from a memory, so that the device performs the method in any one of claims 1 to 76 or 77 to 152.

157. A chip, characterized by A chip includes a processor configured to invoke a program from a memory, so that a device installed with the chip performs the method in any one of claims 1 to 76 or 77 to 152.

158. A computer-readable storage medium, characterized in that, A computer program product is provided, and the computer program product has a program stored thereon. The program causes a computer to perform the method in any one of claims 1 to 76 or 77 to 152.

159. A computer program product, characterized in that, A computer program product is provided, and the computer program product has a program stored thereon. The program causes a computer to perform the method in any one of claims 1 to 76 or 77 to 152.

160. A computer program, characterized in that, A computer program product is provided, and the computer program product has a program stored thereon. The program causes a computer to perform the method in any one of claims 1 to 76 or 77 to 152.

Images