Wireless communication method and communication device

Abstract

Provided are a wireless communication method and a communication device. The wireless communication method comprises: a first device sends a first PPDU to a second device, wherein the first PPDU comprises one or more of the following: a legacy preamble; a first information field for carrying data and / or control information; a second information field for signal synchronization; and a third information field for indicating a transmission parameter used by the first information field.

Description

Wireless communication methods and communication devices Technical Field

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

[0002] Some low-complexity devices (such as ambient-powered (AMP) devices) have limited bandwidth capabilities. Therefore, these devices cannot communicate with network devices using the traditional physical layer protocol data unit (PPDU) format. Thus, designing a suitable PPDU format for these low-complexity devices is a problem that needs to be addressed. Summary of the Invention

[0003] This application provides a method and apparatus for wireless communication. The various aspects covered by this application are described below.

[0004] In a first aspect, a wireless communication method is provided, comprising: a first device transmitting a first PPDU to a second device; wherein the first PPDU includes one or more of the following: a conventional preamble; a first information field for carrying data and / or control information; a second information field for signal synchronization; and a third information field for indicating the transmission parameters adopted by the first information field.

[0005] In a second aspect, a wireless communication method is provided, comprising: a second device receiving a first PPDU transmitted by a first device; wherein the first PPDU includes one or more of the following: a conventional preamble; a first information field for carrying data and / or control information; a second information field for signal synchronization; and a third information field for indicating the transmission parameters adopted by the first information field.

[0006] Thirdly, a communication device is provided, which is a first device, comprising: a transmitting module for transmitting a first PPDU to a second device; wherein the first PPDU includes one or more of the following: a conventional preamble; a first information field for carrying data and / or control information; a second information field for signal synchronization; and a third information field for indicating the transmission parameters used in the first information field.

[0007] Fourthly, a communication device is provided, which is a second device. The communication device includes: a receiving module for receiving a first PPDU sent by a first device; wherein the first PPDU includes one or more of the following: a conventional preamble; a first information field for carrying data and / or control information; a second information field for signal synchronization; and a third information field for indicating the transmission parameters used in the first information field.

[0008] Fifthly, a communication device is provided, including a processor, a memory, and a communication interface, wherein the memory is used to store one or more computer programs, and the processor is used to invoke the computer programs in the memory to cause the communication device to perform some or all of the steps in the method of the first aspect.

[0009] In a sixth aspect, a communication device is provided, including a processor, a memory, and a communication interface, wherein the memory is used to store one or more computer programs, and the processor is used to invoke the computer programs in the memory to cause the communication device to perform some or all of the steps in the method of the second aspect.

[0010] Seventhly, embodiments of this application provide a communication system including the first device and / or the second device described above. In another possible design, the system may further include other devices that interact with the first device or the second device as provided in the embodiments of this application.

[0011] Eighthly, embodiments of this application provide a computer-readable storage medium storing a computer program that causes a computer to perform some or all of the steps in the methods described above.

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

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

[0014] This application provides a PPDU format, which includes one or more of the following: a conventional preamble, a first information field, a second information field, and a third information field. This PPDU format facilitates communication between low-complexity devices (such as AMP devices) and network devices. Attached Figure Description

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

[0016] Figure 2 is another example diagram of the system architecture of a wireless communication system to which embodiments of this application can be applied.

[0017] Figure 3 is another example diagram of the system architecture of a wireless communication system to which embodiments of this application can be applied.

[0018] Figure 4 is a flowchart illustrating the wireless communication method provided in an embodiment of this application.

[0019] Figure 5 is a schematic diagram of the structure of a first PPDU provided in an embodiment of this application.

[0020] Figure 6 is a schematic diagram of the structure of the first PPDU provided in another embodiment of this application.

[0021] Figure 7 is a schematic diagram of the structure of the first PPDU provided in another embodiment of this application.

[0022] Figure 8 is a schematic diagram of the structure of a communication device provided in an embodiment of this application.

[0023] Figure 9 is a schematic diagram of the structure of a communication device provided in another embodiment of this application.

[0024] Figure 10 is a schematic structural diagram of the communication device provided in an embodiment of this application. Detailed Implementation

[0025] Communication system architecture

[0026] Figure 1 is a system architecture example diagram of a wireless communication system 100 to which embodiments of this application can be applied. The wireless communication system 100 may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120. The network device 110 may provide communication coverage for a specific geographical area and may communicate with the terminal device 120 located within that coverage area.

[0027] Figure 1 illustrates an exemplary network device and two terminal devices. Optionally, the wireless communication system 100 may include multiple network devices, and each network device may include other numbers of terminal devices within its coverage area. This application embodiment does not limit this.

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

[0029] It should be understood that the technical solutions of the embodiments of this application can be applied to various communication systems, such as: 5th generation (5G) systems or new radio (NR), long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, wireless local area networks (WLAN), wireless fidelity (WiFi), high performance radio local area networks (HIPELAN), wide area networks (WAN), etc. The technical solutions provided in this application can also be applied to future communication systems, such as 6th generation mobile communication systems, satellite communication systems, etc. The technical solutions provided in the embodiments of this application can be applied to communication systems using the 802.11 standard. Exemplarily, the 802.11 standard includes, but is not limited to: the 802.11ax standard, the 802.11be standard, and next-generation 802.11 standards, etc.

[0030] The terminal device in this application embodiment can also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. The terminal device in this application embodiment can be a device that provides voice and / or data connectivity to a user, and can be used to connect people, objects, and machines, such as a handheld device with wireless connectivity, vehicle-mounted device, etc. The terminal devices in the embodiments of this application can be mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, self-driving, remote medical surgery, smart grids, transportation safety, smart cities, and smart homes, etc. Optionally, the UE can act as a base station. For example, the UE can act as a scheduling entity, providing sidelink signals between UEs in V2X or D2D, etc. For example, cellular phones and cars communicate with each other using sidelink signals. Cellular phones and smart home devices communicate without relaying communication signals through a base station.

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

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

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

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

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

[0036] AMP devices

[0037] In cellular network systems (such as NR and 6G systems) and WiFi systems, the battery-free and low-cost nature of devices enables the low-cost, mass deployment and maintenance-free operation of devices such as IoT devices. Current standards are researching how to support AMP devices (or AMP IoT devices, AMP tags, zero-power devices, etc.) in cellular network and WiFi systems. The energy required for their operation comes from environmental energy harvesting, which can be from wireless signals, solar energy, or thermal energy. These devices are similar to passive or semi-passive devices in zero-power communication.

[0038] The 3rd Generation Partner Project (3GPP) is discussing research projects on AMP devices, broadly categorizing them into three types: Device A, Device B, and Device C, each with corresponding complexity and communication capabilities. These three types of AMP devices are described below.

[0039] Device A lacks energy storage capabilities and cannot transmit signals independently. In other words, device A uses backscattering transmission for communication. Device A has minimal complexity and power consumption, as low as 1μW, but its communication distance is limited, typically only a few meters. Device A requires a carrier signal from a network device for backscattering transmission.

[0040] Device B has energy storage capabilities but cannot transmit independent signals. In other words, device B uses backscatter transmission for communication and can amplify the backscattered signal using stored energy. The complexity and power consumption of device B fall between those of devices A and C.

[0041] Device C has energy storage capabilities and can transmit signals independently. In other words, device C possesses active transmission capabilities. Device C typically has a large-capacity capacitor to store energy from the environment, supports power consumption of several hundred μW, supports active signal transmission, and has a long communication range. Because device C can perform active transmission, it does not require a carrier signal from network equipment.

[0042] Based on the discussion of application scenarios for AMP devices in the 3GPP system architecture (SA)1, AMP devices can be used in at least the following four types of scenarios.

[0043] Scenario 1: Object recognition, such as logistics, production line product management, and supply chain management.

[0044] Scenario 2: Environmental monitoring, such as monitoring of temperature, humidity, and harmful gases in the working environment and natural environment.

[0045] Scenario 3: Location services, such as indoor location services, smart item search, and production line item location.

[0046] Scenario 4: Intelligent control, such as the intelligent control of various electrical appliances in smart homes (turning on and off air conditioners, adjusting temperature), and the intelligent control of various facilities in agricultural greenhouses (automatic irrigation, fertilization).

[0047] In low-power IoT based on cellular networks, AMP devices can directly send and receive commands, data, or signals from network devices, and send or backscatter data or channels to network devices, as shown in Figure 2 (denoted as the first topology). Alternatively, AMP devices can communicate with network devices through intermediate nodes. In this case, the intermediate node sends control, data, or signals to the AMP device, and the AMP device sends or backscatters data or signals to the intermediate node, as shown in Figure 3 (denoted as the second topology).

[0048] It should be noted that in the architectures shown in Figures 2 and 3, the transmission of data by the AMP device is based on network device scheduling. In Figure 2, the AMP device and the network device communicate directly; therefore, the network device can directly send scheduling information to the AMP device. In Figure 3, the AMP device communicates with the network device through an intermediate node. The scheduling information sent by the network device is first sent to the intermediate node, and then the intermediate node sends it to the AMP device.

[0049] In some embodiments, if the AMP device sends control, data, or signals to a network device or intermediate node via backscattering, a carrier wave needs to be provided to the AMP device. In this embodiment, the node providing the carrier wave to the AMP device can be a network device or intermediate node, or it can be another node.

[0050] In some embodiments, the AMP device can send control, data, or signals to network devices or intermediate nodes via active transmission.

[0051] AMP devices require energy harvested from the environment, resulting in limited capabilities (such as bandwidth). Therefore, traditional PPDU formats cannot be used when AMP devices communicate with network devices. Thus, determining the appropriate PPDU format for certain less complex devices (such as AMP devices) is a problem that needs to be addressed.

[0052] To address the aforementioned problems, this application proposes a PPDU format that can be used for communication between low-complexity devices and network devices. The method embodiments of this application will be described below.

[0053] Figure 4 is a schematic flowchart of a wireless communication method provided in an embodiment of this application. The method shown in Figure 4 is described from the perspective of interaction between a first device and a second device. The method shown in Figure 4 includes step S410, which will be described below.

[0054] In step S410, the first device sends a first PPDU to the second device.

[0055] The first device is the sender of the first PPDU. In some embodiments, the first device may be a network device, such as the network devices shown in Figures 1 to 3. In some embodiments, the first device may be a low-complexity device, such as a redcap terminal, an AMP device, etc.

[0056] The second device is the receiver of the first PPDU. In some embodiments, the second device may be a low-complexity device, such as a redcap terminal, an AMP device, etc. In some embodiments, the first device may be a network device, such as the network devices shown in Figures 1 to 3.

[0057] Taking the first PPDU as an uplink PPDU as an example, the first device can be a low-complexity device (such as an AMP device), and the second device can be a network device.

[0058] Taking the first PPDU as a downlink PPDU as an example, the first device can be a network device, and the second device can be a low-complexity device (such as an AMP device).

[0059] In some embodiments, the first device and the second device can communicate via a cellular network. For example, the first device and the second device can communicate via an NR network or a 6G network.

[0060] In some embodiments, the first device and the second device can communicate via a WiFi network. When the first device and the second device communicate via a WiFi network, the first device and the second device can be understood as a site and an access point, respectively.

[0061] In some embodiments, the first PPDU can be used for communication by low-complexity devices (such as AMP devices). In this case, the first PPDU can also be referred to as or understood as an AMP PPDU.

[0062] In this embodiment, the first PPDU (or the format of the first PPDU) may include one or more of the following: a legacy preamble, a first information field, a second information field, and a third information field. Including this information in the first PPDU facilitates communication between the device and the network device with low complexity.

[0063] In some embodiments, the first PPDU may include one of the information described above. As an example, the first PPDU may include a conventional preamble. As another example, the first PPDU may include a first information field. As yet another example, the first PPDU may include a second information field. As yet another example, the first PPDU may include a third information field.

[0064] In some embodiments, the first PPDU may include multiple types of the information described above. As an example, the first PPDU may include a conventional preamble and a first information field. As another example, the first PPDU may include a conventional preamble, a first information field, and a second information field. As yet another example, the first PPDU may include a conventional preamble, a first information field, and a third information field. As yet yet another example, the first PPDU may include a conventional preamble, a first information field, a second information field, and a third information field.

[0065] It should be noted that the above examples are merely illustrations, and the first PPDU may include any combination of the above information. For the sake of brevity, they will not be listed here.

[0066] The traditional preamble, first information domain, second information domain, and third information domain are introduced below.

[0067] In some embodiments, a legacy preamble can be used for reception on legacy devices. For example, a legacy preamble can be used for reception on legacy terminal devices or legacy sites.

[0068] In some embodiments, less complex devices (such as redcap terminals, AMP devices, etc.) cannot receive traditional preambles.

[0069] In some embodiments, the first or second device in this application embodiment cannot receive a conventional preamble. Taking a downlink PPDU as an example, the second device cannot receive a conventional preamble.

[0070] In some embodiments, the bandwidth of the conventional preamble is greater than the bandwidth capability of the less complex device, causing the less complex device to be unable to receive the conventional preamble. For example, if the less complex device supports a bandwidth capability of 10MHz, while the bandwidth of the conventional preamble is 20MHz, the less complex device cannot receive the conventional preamble.

[0071] This application does not limit the format of traditional preambles. Two traditional preamble formats are described below as examples.

[0072] As an implementation method, a traditional leader can include one or more of the following: legacy short training field (L-STF), legacy long training field (L-LTF), and legacy signal (L-SIG) field.

[0073] As an example, a traditional leader may include L-STF.

[0074] As another example, a traditional leader may include an L-LTF.

[0075] As yet another example, a traditional leading edge may include an L-SIG field.

[0076] As yet another example, traditional leaders can include L-STF and L-LTF.

[0077] As yet another example, a traditional leading edge may include the L-STF and L-SIG domains.

[0078] As yet another example, a traditional leading edge may include the L-LTF and L-SIG domains.

[0079] As yet another example, traditional leading edges can include L-STF, L-LTF, and L-SIG domains.

[0080] In some embodiments, the L-STF described above can be used for one or more of the following: coarse synchronization, PPDU discovery, and automatic gain control.

[0081] In some embodiments, the L-LTF described above can be used for one or more of the following: fine synchronization, channel estimation.

[0082] In some embodiments, the L-SIG field described above may indicate one or more of the following information: data rate, length, parity, etc.

[0083] In some embodiments, the L-SIG domain can be an L-SIG domain with an orthogonal frequency division multiplexing (OFDM) waveform.

[0084] It should be noted that detailed information on L-STF, L-LTF, and L-SIG domains can be found in relevant technologies (such as 802.11a), and will not be elaborated here.

[0085] As an alternative implementation, a traditional preamble may include one or more of the following: a synchronization field, a start of frame delimiter (SFD) field, and a physical layer convergence protocol (PLCP) header field.

[0086] As an example, a traditional preamble may include a synchronization domain.

[0087] As another example, a traditional leader may include an SFD domain.

[0088] As yet another example, a traditional preamble may include a PLCP header field.

[0089] As yet another example, a traditional leading edge can include a synchronization domain and an SFD domain.

[0090] As yet another example, a traditional preamble may include a synchronization field and a PLCP header field.

[0091] As yet another example, a traditional leading edge may include an SFD field and a PLCP header field.

[0092] As yet another example, a traditional preamble may include a synchronization field, an SFD field, and a PLCP header field.

[0093] In some embodiments, the synchronization domain can be used for signal synchronization.

[0094] In some embodiments, the SFD field may be used to identify the start of the PPDU.

[0095] In some embodiments, the PLCP head may be a PLCP head with a direct sequence spread spectrum (DSSS) waveform.

[0096] It should be noted that detailed information on the synchronization field, SFD field, and PLCP header field can be found in relevant technologies (such as 802.11b), and will not be elaborated here.

[0097] In some embodiments, the conventional preamble may be an 802.11a preamble. For example, the conventional preamble may include L-STF, L-LTF, and L-SIG fields.

[0098] In some embodiments, the conventional preamble may be an 802.11b preamble. For example, the conventional preamble may include a synchronization field, an SFD field, and a PLCP header field.

[0099] In some embodiments, the legacy preamble can support preambles of different formats. For example, the legacy preamble can support both 802.11a and 802.11b preambles.

[0100] In some embodiments, the conventional preamble may include (or indicate) a first modulation and coding scheme (MSC) and / or a first data rate.

[0101] In some embodiments, the first modulation and coding scheme and / or the first data rate can be used to indicate that the first PPDU is for communication with a low-complexity device. For example, if the first PPDU is a downlink PPDU, the first modulation and coding scheme and / or the first data rate can be used to indicate that the first PPDU is sent to a low-complexity device. Similarly, if the first PPDU is an uplink PPDU, the first modulation and coding scheme and / or the first data rate can be used to indicate that the first PPDU is sent by a low-complexity device.

[0102] In some embodiments, the first modulation and coding scheme can be a binary phase shift keying (BPSK) modulation scheme. That is, embodiments of this application can indicate that the first PPDU is for low-complexity device communication by indicating that the first modulation and coding scheme is a BPSK modulation scheme. In this way, when a conventional device detects the first PPDU, it can determine, by obtaining the first modulation and coding scheme in the conventional preamble, that it does not need to receive the subsequent parts of the first PPDU.

[0103] In some embodiments, the first modulation and coding scheme may be MSC0. Indicating the first modulation and coding scheme as MSC0 is used to indicate that the first modulation and coding scheme is a BPSK modulation scheme.

[0104] In some embodiments, if the conventional leader is an 802.11 leader, the conventional leader may include a first MSC.

[0105] In some embodiments, if the conventional leader is an 802.11 leader, the first MSC in the conventional leader can be MSC0.

[0106] In some embodiments, the first data rate may be the lowest data rate supported by the first information field. Alternatively, the first data rate may be the lowest data rate supported by the 802.11 protocol, in which case the lowest data rate supported by the first information field is also the lowest data rate supported by the 802.11 protocol. Taking the 802.11b protocol as an example, in the 802.11b protocol, the lowest data rate supported by the first information field is 1 Mbps; in this case, the first data rate may be 1 Mbps.

[0107] This application embodiment can indicate that the first PPDU is for low-complexity device communication by indicating that the first data rate is the lowest data rate supported by the first information field. In this way, when a conventional device detects the first PPDU, it can determine that it does not need to receive the subsequent part of the first PPDU by obtaining the first data rate in the conventional preamble.

[0108] In some embodiments, the first data rate can be indicated in hexadecimal, for example, the first data rate can be indicated as 0x0A. Indicating the first data rate as 0x0A indicates that the first data rate is the lowest data rate supported by the first information field.

[0109] The first information field can be used to carry data and / or control information. Therefore, in some embodiments, the first information field may also be referred to as or understood as a payload field, a data field, an AMP payload field, an AMP data field, etc.

[0110] In some embodiments, the first information field may be located after the conventional preamble.

[0111] In some embodiments, the number of bits occupied by the first information field is variable. For example, the number of bits occupied by the first information field may differ depending on the amount of data it needs to carry. In some embodiments, when the amount of data the first information field needs to carry is large, the number of bits occupied by the first information field will be relatively large. In some embodiments, when the amount of data the first information field needs to carry is small, the number of bits occupied by the first information field will be relatively small.

[0112] The second information field can be used for signal synchronization. Alternatively, it can be used to wake up the second device and synchronize its signals with the first device. For example, the second information field can be used to alert the second device to the arrival of a potentially receivable signal, thus waking it up to prepare for signal reception. Another example is that the second information field can be used for timing synchronization of signals sent by the first device, ensuring that the second device can correctly identify the start and end of subsequent data. Therefore, in some embodiments, the second information field can also be understood as, or referred to as, the synchronization (SYNC) field or the AMP synchronization field.

[0113] In some embodiments, the second information field may be located after the conventional preamble and before the first information field.

[0114] In some embodiments, the chip duration occupied by the second information field is the same for different data rates. Alternatively, the chip duration occupied by the second information field is independent of the data rate; regardless of the PPDU's data rate, the chip duration occupied by the second information field of the PPDU is the same (e.g., a fixed value). For example, the protocol can design a single chip duration for the PPDU of low-complexity devices, and all PPDUs of low-complexity devices use this chip duration to transmit the second information field. In this way, the receiver of the first PPDU (i.e., the second device) does not need to assume multiple chip durations, thereby achieving low complexity and low power consumption.

[0115] For example, the data rate of the first PPDU is data rate A, and the data rate of another PPDU (such as the second PPDU, the third PPDU, etc.) is data rate B. Data rate A and data rate B are different, but the second information field of the first PPDU and the second information field of the other PPDU occupy the same chip duration.

[0116] In some embodiments, the chip duration occupied by the second information field is determined based on the data rate; that is, the chip duration occupied by the second information field varies with the data rate. In other words, different data rates correspond to different chip durations occupied by the second information field. That is, the chip duration occupied by the second information field is related to the data rate, and the data rate of the PPDU needs to be referenced when determining the chip duration occupied by the second information field.

[0117] In some embodiments, the duration of the chip occupied by the second information field can be scaled with the data rate. For example, assuming the duration of the chip occupied by the second information field is 2 microseconds at a data rate of 250 kbps, then the duration of the chip occupied by the second information field is 0.5 microseconds at a data rate of 1 Mbps, 0.25 microseconds at a data rate of 2 Mbps, and 0.125 microseconds at a data rate of 4 Mbps.

[0118] When the chip duration occupied by the second information field is determined according to the data rate, it is beneficial to improve transmission flexibility. However, in this case, the receiver of the first PPDU needs to use all possible chip durations for blind detection, resulting in higher complexity and power consumption.

[0119] In some embodiments, when the receiver of the first PPDU performs blind detection using all possible chip durations, a specific detection order can be assumed and blind detection can be performed according to that detection order. This application embodiment does not limit the detection order of the receiver of the first PPDU. As one possible implementation, the receiver of the first PPDU can start detection from the longest chip duration. As another possible implementation, the receiver of the first PPDU can start detection from the shortest chip duration.

[0120] In some embodiments, the chip duration occupied by the second information field in the uplink PPDU is different from that in the downlink PPDU. That is, for uplink and downlink, it can be assumed that the chip duration occupied by the second information field is different. In this way, the receiver of the PPDU (such as the first PPDU) can distinguish between the uplink PPDU and the downlink PPDU by the chip duration occupied by the second information field.

[0121] In some embodiments, the synchronization configuration used in the second information field of an uplink PPDU can be indicated (or configured) by a downlink PPDU. For example, when multiple uplink synchronization configurations are applied, the specific synchronization configuration used in the second information field of an uplink PPDU can be indicated by a downlink PPDU. In this way, the receiver of the uplink PPDU (such as a network device) does not need to perform blind detection when receiving the uplink second information field, which helps to reduce complexity.

[0122] Taking the first PPDU as an uplink PPDU as an example, the synchronization configuration used in the second information field of the first PPDU can be indicated by the second PPDU, which is a downlink PPDU.

[0123] This application embodiment does not limit the synchronization configuration used in the second information field of the uplink PPDU, or it does not limit the multiple uplink synchronization configurations. Exemplarily, the synchronization configuration or multiple uplink synchronization configurations used in the second information field of the uplink PPDU can be used to indicate one or more of the following: the length of the uplink synchronization sequence, and the specific uplink synchronization sequence used.

[0124] This application does not limit the method of carrying the synchronization configuration of the second information field of the uplink PPDU. For example, the synchronization configuration of the second information field of the uplink PPDU can be carried in one or more of the following: the third information field of the downlink PPDU, and the MAC header of the downlink PPDU.

[0125] As an example, the synchronization configuration used in the second information field of the uplink PPDU can be carried in the third information field of the downlink PPDU.

[0126] As another example, the synchronization configuration used in the second information field of the uplink PPDU can be carried in the MAC header of the downlink PPDU.

[0127] As another example, the synchronization configuration used in the second information field of the uplink PPDU can be carried in the third information field and MAC header of the downlink PPDU.

[0128] Taking the first PPDU as an uplink PPDU as an example, the synchronization configuration adopted by the second information field in the first PPDU can be carried in the third information field of the second PPDU and / or the MAC header of the second PPDU.

[0129] The third information field can be used to indicate the transmission parameters adopted by the first information field. In this way, the second device can correctly decode and process the information carried in the first information field (such as data and / or control information) according to the transmission parameters indicated by the third information field. This application embodiment does not limit the transmission parameters indicated by the third information field. Exemplarily, the third information field can indicate one or more of the following transmission parameters: modulation and coding scheme, coding method (such as Manchester coding, pulse-interval coding, etc.), number of spatial streams, and remaining transmission opportunity time. In some embodiments, the third information field can also be used by the second device for channel estimation.

[0130] In some embodiments, the third information domain may also be referred to as or understood as the signal (SIG) domain or the AMP SIG domain.

[0131] In some embodiments, the third information field may be located after the second information field and before the first information field.

[0132] In some embodiments, the chip duration occupied by the third information field is the same for different data rates. In other words, the chip duration occupied by the third information field is independent of the data rate; regardless of the PPDU's data rate, the chip duration occupied by the third information field of the PPDU is the same (e.g., a fixed value). For example, the protocol can design a single chip duration for the PPDU of low-complexity devices, and all PPDUs of low-complexity devices use this chip duration to transmit the third information field. In this way, the receiver of the first PPDU (i.e., the second device) does not need to assume multiple chip durations, thus achieving low complexity and low power consumption.

[0133] For example, the data rate of the first PPDU is data rate A, and the data rate of another PPDU (such as the second PPDU, the third PPDU, etc.) is data rate B. Data rate A and data rate B are different, but the chip duration occupied by the third information field of the first PPDU and the third information field of the other PPDU is the same.

[0134] In some embodiments, the duration of the chip occupied by the third information field is determined based on the data rate; that is, the duration of the chip occupied by the third information field varies with the data rate. In other words, different data rates correspond to different durations of the chip occupied by the third information field. That is, the duration of the chip occupied by the third information field is related to the data rate, and the data rate of the PPDU needs to be referenced when determining the duration of the chip occupied by the third information field.

[0135] In some embodiments, the duration of the chip occupied by the third information field can be scaled with the data rate. For example, assuming the chip duration occupied by the third information field is 2 microseconds at a data rate of 250 kbps, then the chip duration occupied by the third information field is 0.5 microseconds at a data rate of 1 Mbps, 0.25 microseconds at a data rate of 2 Mbps, and 0.125 microseconds at a data rate of 4 Mbps.

[0136] When the duration of the chip occupied by the third information field is determined according to the data rate, it is beneficial to improve the flexibility of transmission. However, in this case, the receiver of the first PPDU needs to use all possible chip durations for blind detection, resulting in higher complexity and power consumption.

[0137] In some embodiments, the chip duration occupied by the third information field in the uplink PPDU is different from that in the downlink PPDU. That is, for uplink and downlink, it can be assumed that the chip duration occupied by the third information field is different. In this way, the receiver of the PPDU (such as the first PPDU) can distinguish between the uplink PPDU and the downlink PPDU by the chip duration occupied by the third information field.

[0138] In some embodiments, the chip duration occupied by the third information field is the same as the chip duration occupied by the second information field. For example, for the same PPDU (such as the first PPDU), the chip duration occupied by the third information field in the PPDU is the same as the chip duration occupied by the second information field. In this way, the receiver of the PPDU does not need to change the chip duration after receiving the second information field.

[0139] As an example, if the chip duration occupied by the second information field is independent of the data rate, that is, the chip duration occupied by the second information field is the same for different data rates, then the chip duration occupied by the third information field can also be independent of the data rate and the same as the chip duration occupied by the second information field.

[0140] As another example, if the chip duration occupied by the second information field is determined according to the data rate, then the chip duration occupied by the third information field can also be determined according to the data rate. For example, if the chip duration occupied by the second information field scales with the data rate, then the chip duration occupied by the third information field can also scale with the data rate.

[0141] In some embodiments, the chip duration occupied by the third information field is different from the chip duration occupied by the second information field. For example, for the same PPDU (such as the first PPDU), the chip duration occupied by the third information field in the PPDU is different from the chip duration occupied by the second information field.

[0142] As an example, if the chip duration occupied by the second information field is independent of the data rate, meaning the chip duration occupied by the second information field remains constant at different data rates (or the chip duration occupied by the second information field is the same for different data rates), while the chip duration occupied by the third information field varies with the data rate (i.e., the chip duration occupied by the third information field can be determined based on the data rate). For instance, the chip duration occupied by the second information field is a fixed value for different data rates, while the chip duration occupied by the third information field can scale with the data rate.

[0143] As another example, if the chip duration occupied by the second information field varies with the data rate (i.e., the chip duration occupied by the second information field is determined according to the data rate), while the chip duration occupied by the third information field remains constant at different data rates (i.e., the chip duration occupied by the third information field can be the same for different data rates). For example, the chip duration occupied by the second information field scales with the data rate, while the chip duration occupied by the third information field for different data rates is a fixed value.

[0144] In some embodiments, the term "chip duration" can also be understood as or replaced by "transmission rate". For example, the chip duration occupied by the second information field can be understood as or replaced by the transmission rate of the second information field. Similarly, the chip duration occupied by the third information field can be understood as or replaced by the transmission rate of the third information field.

[0145] In some embodiments, the bandwidth occupied by the conventional preamble, the first information field, the second information field, and the third information field may be different. For example, the bandwidth occupied by the conventional preamble is the first bandwidth, while the bandwidth occupied by the first information field, the second information field, and the third information field may be the second bandwidth.

[0146] In some embodiments, the bandwidth occupied by the conventional preamble can be greater than the bandwidth occupied by the first information domain, the second information domain, and the third information domain, i.e., the first bandwidth is greater than the second bandwidth.

[0147] This application does not limit the first bandwidth and the second bandwidth, as long as the first bandwidth is greater than the second bandwidth. As an example, the first bandwidth can be 20MHz and the second bandwidth can be 4MHz. As another example, the first bandwidth can be 20MHz and the second bandwidth can be 8MHz.

[0148] In some embodiments, the first PPDU may include other information besides the information described above, and this application embodiment is not limited in this regard. For example, the first PPDU may also include a medium access control (MAC) header. As another example, the first PPDU may also include a frame check sequence (FCS). Yet another example, the first PPDU may also include a fourth information field. The fourth information field will be described below.

[0149] In some embodiments, when the first PPDU is a downlink PPDU, the first PPDU may include a fourth information field.

[0150] In some embodiments, the fourth information field can be used to determine the recipient of the first PPDU. Taking a downlink PPDU as an example, the fourth information field can be used by a conventional device to determine whether the first PPDU was sent to itself.

[0151] In some embodiments, if a conventional device cannot decode the fourth information field of the first PPDU, it indicates that the first PPDU was not sent to the conventional device. In this case, the conventional device does not need to receive subsequent information. In some embodiments, if a conventional device cannot decode the fourth information field of the first PPDU, it can also be understood that the first PPDU was sent to a low-complexity device (such as an AMP device), or that the first PPDU is an AMP PPDU.

[0152] In some embodiments, if a conventional device can decode the fourth information field of the first PPDU, it indicates that the first PPDU was sent to the conventional device. In this case, the conventional device can continue to receive subsequent information.

[0153] In some embodiments, AMP PPDUs may support DSSS. In this case, it is necessary to distinguish AMP PPDUs from traditional PPDU formats. For example, currently supported DSSS specifications include 802.11b, 802.11g, and 802.11n (fallback mode), and it is necessary to distinguish AMP PPDUs from these PPDU formats. In this case, a fourth information field can be used to differentiate AMP PPDUs from other PPDU formats.

[0154] In some embodiments, where the conventional preamble is 802.11b, the first PPDU may include a fourth information field.

[0155] In some embodiments, the fourth information field may occupy one or more symbols (such as mask symbols). These one or more symbols may be used to determine the recipient of the first PPDU.

[0156] In some embodiments, the one or more symbols may be located after the conventional preamble. Figure 5 illustrates an example of a conventional preamble and a fourth information field. As shown in Figure 5, the conventional preamble may include a synchronization field, an SFD field, and a PLCP header field, followed by one or more mask symbols that can be used to determine the receiver of the first PPDU.

[0157] In some embodiments, the number of the one or more symbols may be determined based on the number of symbols processed by the receiver of the first PPDU when distinguishing PPDU formats. That is, the number of the one or more symbols depends on how many symbols the receiving device processes when classifying PPDU formats.

[0158] In some embodiments, the number of the one or more symbols may be equal to the number of symbols processed by the receiver of the first PPDU when distinguishing PPDU formats. For example, if the receiving device needs to process 2 symbols to classify PPDU formats, then the number of the one or more symbols may be 2. Or, for example, if the receiving device needs to process 4 symbols to classify PPDU formats, then the number of the one or more symbols may be 4.

[0159] In some embodiments, the number of symbols processed by the receiving device when classifying PPDU formats refers to how the receiving device can determine whether the PPDU was sent to itself by processing these symbols.

[0160] In some embodiments, the one or more symbols may use DSSS.

[0161] In some embodiments, the MSC used in the fourth information domain is the second MSC.

[0162] In some embodiments, if the one or more symbols use DSSS, the second MSC used in the fourth information field is different from the differential binary phase shift keying (DBPSK) modulation scheme. That is, if the one or more symbols use DSSS, the fourth information field can use a modulation scheme different from the DBPSK modulation scheme. This is because BPSK is the modulation scheme used in the conventional 802.11b / g / n standard that supports DSSS.

[0163] This application does not specifically limit the second MSC. Exemplarily, the second MSC may include one or more of the following: BPSK modulation scheme, quadrature binary phase shift keying (QBPSK) modulation scheme, and OFDM modulation scheme using BPSK modulation.

[0164] As an example, the second MSC may include a BPSK modulation scheme.

[0165] As another example, the second MSC may include a QBPSK modulation scheme.

[0166] As another example, the second MSC may include an OFDM modulation scheme employing BPSK modulation. For instance, in an enhanced 802.11n with a hybrid deployment, the conventional preamble in the first PPDU supports DSSS, but the subsequent first information field is OFDM modulated; this one or more symbols may also employ an OFDM modulation scheme employing BPSK modulation.

[0167] As yet another example, the second MSC may include a BPSK modulation scheme and an OFDM modulation scheme employing BPSK modulation.

[0168] In some embodiments, the bandwidth of the fourth information field can be the same as that of the conventional preamble. For example, the bandwidth of both the fourth information field and the conventional preamble can be the first bandwidth.

[0169] In some embodiments, the fourth information field and the conventional preamble can be understood as two independent information fields. However, the embodiments of this application are not limited thereto, and in some embodiments, the fourth information field can also be understood as part of the conventional preamble.

[0170] In some embodiments, the first PPDU may be a downlink PPDU, and the first PPDU may be used to address one or more devices. When the first PPDU can be used to address one or more devices, the first information field of the first PPDU may include one or more of the following: identifiers of one or more devices, identifiers of one or more groups of devices.

[0171] As an example, the first information field of the first PPDU may include the identifiers of one or more devices.

[0172] As another example, the first information field of the first PPDU may include the identifiers of one or more device groups.

[0173] As yet another example, the first information field of the first PPDU may include the identifiers of one or more devices and the identifiers of one or more groups of devices.

[0174] Taking the maximum number of identifiers supported by the first information field of the first PPDU as N as an example, the first information field of the first PPDU can include identifiers of N devices at most; or, the first information field of the first PPDU can include identifiers of N device groups at most; or, the first information field of the first PPDU can include identifiers of A devices and identifiers of B device groups, and A+B≤N.

[0175] In some embodiments, the maximum number (i.e., N) of identifiers supported by the first information field of the first PPDU is predefined or preconfigured, such as by protocol predefined. In some embodiments, the maximum number (i.e., N) of identifiers supported by the first information field of the first PPDU is indicated in the first PPDU. For example, the maximum number (i.e., N) of identifiers supported by the first information field of the first PPDU can be indicated by one or more of the following: the third information field of the first PPDU, the MAC header of the first PPDU.

[0176] As an example, the maximum number (i.e., N) of identifiers that the first information field of the first PPDU can support can be indicated by the third information field of the first PPDU.

[0177] As another example, the maximum number (i.e., N) of identifiers that the first information field of the first PPDU can support can be indicated by the MAC header of the first PPDU.

[0178] As yet another example, the maximum number (i.e., N) of identifiers that the first information field of the first PPDU can support can be indicated by the third information field of the first PPDU and the MAC header of the first PPDU.

[0179] This application embodiment does not limit the maximum number (i.e., N) of identifiers supported by the first information field of the first PPDU. For example, the maximum number may include one of the following: 16, 32, 64.

[0180] Figures 6 and 7 illustrate the structure of the first PPDU when it is used to address one or more devices. As shown in Figure 6, the first PPDU may include a MAC header, one or more identifiers (e.g., device identifier and / or device group identifier), and an FCS. As shown in Figure 7, the first PPDU may include a third information field, a MAC header, one or more identifiers (e.g., device identifier and / or device group identifier), and an FCS. It should be noted that the frame structures in Figures 6 and 7 are merely examples; the actual frame structure may include more information fields than those in Figures 6 and 7. For example, the frame structures in Figures 6 and 7 may also include a conventional preamble and / or a second information field.

[0181] In some embodiments, each identifier in the identifiers of one or more devices and / or groups of one or more devices may be carried by a first bit (e.g., M bits). This application embodiment does not limit the value of the first bit (i.e., M). For example, the first bit may be 4 bits. Another example is that the first bit may be 8 bits. Yet another example is that the first bit may be 16 bits.

[0182] This application does not limit the method of indicating the value of the first bit in its embodiments. In some embodiments, the value of the first bit is predefined or preconfigured, such as being predefined by the protocol. In some embodiments, the value of the first bit is indicated in the first PPDU. For example, the value of the first bit can be indicated by one or more of the following: the third information field of the first PPDU, or the MAC header of the first PPDU.

[0183] As an example, the value of the first bit can be indicated by the third information field of the first PPDU.

[0184] As another example, the value of the first bit can be indicated by the MAC header of the first PPDU.

[0185] As another example, the value of the first bit can be indicated by the third information field of the first PPDU and the MAC header of the first PPDU.

[0186] In some embodiments, the third information field and / or MAC header of the first PPDU may include first indication information. This first indication information can be used to indicate whether the identifier contained in the first information field is a device identifier or a device group identifier. That is, whether the identifier in the first information field is a device identifier or a device group identifier can be indicated by the first indication information in the third information field and / or the MAC header. In this way, the receiver of the first PPDU can determine whether the identifier in the first information field is a device identifier or a device group identifier based on the first indication information, and compare the identifier with its own device identifier or the identifier of its device group to determine whether the first device is addressing itself. For example, if the first indication information indicates that the identifier in the first information field is a device identifier, the second device can compare the identifier in the first information field with its own device identifier to determine whether the first device is addressing itself. As another example, if the first indication information indicates that the identifier in the first information field is a device group identifier, the second device can compare the identifier in the first information field with the identifier of its device group to determine whether the first device is addressing itself.

[0187] It should be noted that the PPDUs mentioned in the embodiments of this application (such as the first PPDU, uplink PPDU, and downlink PPDU) all refer to PPDUs designed for low-complexity devices (such as AMP devices). Therefore, the PPDUs mentioned in the embodiments of this application can also be understood as or referred to as AMP PPDUs. For example, the first PPDU can be understood as or replaced by the first AMP PPDU. Similarly, the uplink PPDU can be understood as or replaced by the uplink AMP PPDU. And the downlink PPDU can be understood as or replaced by the downlink AMP PPDU.

[0188] It should be noted that, unless otherwise specified, the term "waveform" mentioned in the embodiments of this application can be understood or replaced with "modulation method" or "modulation scheme".

[0189] The method embodiments of this application have been described in detail above with reference to Figures 1 to 7. The apparatus embodiments of this application will be described in detail below with reference to Figures 8 to 10. It should be understood that the descriptions of the method embodiments correspond to the descriptions of the apparatus embodiments. Therefore, any parts not described in detail can be referred to the foregoing method embodiments.

[0190] Figure 8 is a schematic diagram of the structure of a communication device provided in an embodiment of this application. The communication device 800 shown in Figure 8 can be the first device described above. The communication device 800 can include a transmitting module 810. The transmitting module 810 can be used to transmit a first PPDU to a second device; wherein, the first PPDU includes one or more of the following: a conventional preamble; a first information field for carrying data and / or control information; a second information field for signal synchronization; and a third information field for indicating the transmission parameters used in the first information field.

[0191] In some embodiments, the conventional preamble includes a first modulation and coding scheme and / or a first data rate, wherein the first modulation and coding scheme is a BPSK modulation scheme, and the first data rate is the lowest data rate supported by the first information domain.

[0192] In some embodiments, the first data rate is 1 Mbps.

[0193] In some embodiments, the conventional preamble includes one or more of the following: a conventional short training domain, a conventional long training domain, and a conventional signal domain; or, the conventional preamble includes one or more of the following: a synchronization domain, a start-of-frame delimiter domain, and a physical layer convergence protocol header domain.

[0194] In some embodiments, the first PPDU includes a fourth information field, which is used to determine the recipient of the first PPDU.

[0195] In some embodiments, the fourth information field occupies one or more symbols, the number of which is determined based on the number of symbols processed by the receiver of the first PPDU when distinguishing PPDU formats.

[0196] In some embodiments, the number of the one or more symbols is equal to the number of symbols processed by the recipient of the first PPDU when distinguishing PPDU formats.

[0197] In some embodiments, the fourth information field adopts a second modulation and coding scheme, which is different from the DBPSK modulation scheme.

[0198] In some embodiments, the second modulation and coding scheme includes one or more of the following: BPSK modulation scheme, QBPSK modulation scheme, and OFDM modulation scheme using BPSK modulation.

[0199] In some embodiments, the second information field occupies the same chip duration for different data rates; or, the chip duration occupied by the second information field is determined according to the data rate.

[0200] In some embodiments, the chip duration occupied by the third information field is the same as the chip duration occupied by the second information field; or, the chip duration occupied by the third information field is different from the chip duration occupied by the second information field.

[0201] In some embodiments, the chip duration occupied by the third information field is different from the chip duration occupied by the second information field, including: the chip duration occupied by the second information field remains constant at different data rates, while the chip duration occupied by the third information field varies with the data rate; and / or the chip duration occupied by the second information field varies with the data rate, while the chip duration occupied by the third information field remains constant at different data rates.

[0202] In some embodiments, the first PPDU is an uplink PPDU or a downlink PPDU, wherein the chip duration occupied by the second information field in the uplink PPDU is different from the chip duration occupied by the second information field in the downlink PPDU.

[0203] In some embodiments, the first PPDU is an uplink PPDU, and the synchronization configuration used in the second information field of the first PPDU is indicated by a second PPDU, which is a downlink PPDU.

[0204] In some embodiments, the synchronization configuration adopted by the second information field in the first PPDU is carried in one or more of the following: the third information field of the second PPDU; the MAC header of the second PPDU.

[0205] In some embodiments, the first PPDU is a downlink PPDU used to address one or more devices, wherein the first information field of the first PPDU includes one or more of the following: an identifier of one or more devices; an identifier of one or more groups of devices.

[0206] In some embodiments, each of the identifiers of the one or more devices and / or the identifiers of the one or more groups of devices is carried by a first bit, the value of which is indicated by one or more of the following: a third information field of the first PPDU; or a MAC header of the first PPDU.

[0207] In some embodiments, the maximum number of identifiers that the first information field can support is indicated by one or more of the following: the third information field of the first PPDU; the MAC header of the first PPDU.

[0208] In some embodiments, the third information field or MAC header of the first PPDU includes first indication information, which is used to indicate an identifier for a device or a group of devices contained in the first information field.

[0209] In some embodiments, the first PPDU is an uplink PPDU and the first device is an AMP device; or the first PPDU is a downlink PPDU and the second device is an AMP device.

[0210] In some embodiments, the transmitting module 810 may be a transceiver 1030. The communication device 800 may also include a processor 1010 and a memory 1020, as shown in FIG10.

[0211] Figure 9 is a schematic diagram of the structure of a communication device provided in another embodiment of this application. The communication device 900 shown in Figure 9 can be the second device described above. The communication device 900 can include a receiving module 910. The receiving module 910 can be used to receive a first PPDU sent by the first device; wherein, the first PPDU includes one or more of the following: a conventional preamble; a first information field for carrying data and / or control information; a second information field for signal synchronization; and a third information field for indicating the transmission parameters used in the first information field.

[0212] In some embodiments, the conventional preamble includes a first modulation and coding scheme and / or a first data rate, wherein the first modulation and coding scheme is a BPSK modulation scheme, and the first data rate is the lowest data rate supported by the first information domain.

[0213] In some embodiments, the first data rate is 1 Mbps.

[0214] In some embodiments, the conventional preamble includes one or more of the following: a conventional short training domain, a conventional long training domain, and a conventional signal domain; or, the conventional preamble includes one or more of the following: a synchronization domain, a start-of-frame delimiter domain, and a physical layer convergence protocol header domain.

[0215] In some embodiments, the first PPDU includes a fourth information field, which is used to determine the recipient of the first PPDU.

[0216] In some embodiments, the fourth information field occupies one or more symbols, the number of which is determined based on the number of symbols processed by the receiver of the first PPDU when distinguishing PPDU formats.

[0217] In some embodiments, the number of the one or more symbols is equal to the number of symbols processed by the recipient of the first PPDU when distinguishing PPDU formats.

[0218] In some embodiments, the fourth information field adopts a second modulation and coding scheme, which is different from the DBPSK modulation scheme.

[0219] In some embodiments, the second modulation and coding scheme includes one or more of the following: BPSK modulation scheme, QBPSK modulation scheme, and OFDM modulation scheme using BPSK modulation.

[0220] In some embodiments, the second information field occupies the same chip duration for different data rates; or, the chip duration occupied by the second information field is determined according to the data rate.

[0221] In some embodiments, the chip duration occupied by the third information field is the same as the chip duration occupied by the second information field; or, the chip duration occupied by the third information field is different from the chip duration occupied by the second information field.

[0222] In some embodiments, the chip duration occupied by the third information field is different from the chip duration occupied by the second information field, including: the chip duration occupied by the second information field remains constant at different data rates, while the chip duration occupied by the third information field varies with the data rate; and / or the chip duration occupied by the second information field varies with the data rate, while the chip duration occupied by the third information field remains constant at different data rates.

[0223] In some embodiments, the first PPDU is an uplink PPDU or a downlink PPDU, wherein the chip duration occupied by the second information field in the uplink PPDU is different from the chip duration occupied by the second information field in the downlink PPDU.

[0224] In some embodiments, the first PPDU is an uplink PPDU, and the synchronization configuration used in the second information field of the first PPDU is indicated by a second PPDU, which is a downlink PPDU.

[0225] In some embodiments, the synchronization configuration adopted by the second information field in the first PPDU is carried in one or more of the following: the third information field of the second PPDU; the MAC header of the second PPDU.

[0226] In some embodiments, the first PPDU is a downlink PPDU used to address one or more devices, wherein the first information field of the first PPDU includes one or more of the following: an identifier of one or more devices; an identifier of one or more groups of devices.

[0227] In some embodiments, each of the identifiers of the one or more devices and / or the identifiers of the one or more groups of devices is carried by a first bit, the value of which is indicated by one or more of the following: a third information field of the first PPDU; or a MAC header of the first PPDU.

[0228] In some embodiments, the maximum number of identifiers that the first information field can support is indicated by one or more of the following: the third information field of the first PPDU; the MAC header of the first PPDU.

[0229] In some embodiments, the third information field or MAC header of the first PPDU includes first indication information, which is used to indicate an identifier for a device or a group of devices contained in the first information field.

[0230] In some embodiments, the first PPDU is an uplink PPDU and the first device is an AMP device; or the first PPDU is a downlink PPDU and the second device is an AMP device.

[0231] In some embodiments, the receiving module 910 may be a transceiver 1030. The communication device 900 may also include a processor 1010 and a memory 1020, as shown in FIG10.

[0232] Figure 10 is a schematic structural diagram of a communication device according to an embodiment of this application. The dashed lines in Figure 10 indicate that the unit or module is optional. This device 1000 can be used to implement the methods described in the above method embodiments. The device 1000 can be a chip, a terminal device, or a network device.

[0233] Apparatus 1000 may include one or more processors 1010. The processor 1010 may support apparatus 1000 in implementing the methods described in the preceding method embodiments. The processor 1010 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0234] The apparatus 1000 may further include one or more memories 1020. The memories 1020 store a program that can be executed by the processor 1010, causing the processor 1010 to perform the methods described in the preceding method embodiments. The memories 1020 may be independent of the processor 1010 or integrated within the processor 1010.

[0235] The device 1000 may also include a transceiver 1030. The processor 1010 can communicate with other devices or chips via the transceiver 1030. For example, the processor 1010 can send and receive data with other devices or chips via the transceiver 1030.

[0236] This application also provides a computer-readable storage medium for storing a program. This computer-readable storage medium can be applied to a terminal device or network device provided in this application embodiment, and the program causes a computer to execute the methods performed by the terminal device or network device in the various embodiments of this application.

[0237] This application also provides a computer program product. The computer program product includes a program. This computer program product can be applied to a terminal device or network device provided in the embodiments of this application, and the program causes a computer to execute the methods performed by the terminal device or network device in the various embodiments of this application.

[0238] This application also provides a computer program. This computer program can be applied to the terminal device or network device provided in this application, and the computer program causes the computer to execute the methods performed by the terminal device or network device in various embodiments of this application.

[0239] It should be understood that the terms "system" and "network" in this application can be used interchangeably. Furthermore, the terminology used in this application is only for explaining specific embodiments of the application and is not intended to limit the application. The terms "first," "second," "third," and "fourth," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. In addition, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0240] In the embodiments of this application, the term "instruction" can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0241] In the embodiments of this application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information.

[0242] In the embodiments of this application, the term "correspondence" can indicate a direct or indirect correspondence between two things, or an association between two things, or a relationship such as instruction and being instructed, configuration and being configured.

[0243] In the embodiments of this application, the term "comprising" can refer to direct inclusion or indirect inclusion. Optionally, "comprising" in the embodiments of this application can be replaced with "instructing" or "used to determine". For example, "A includes B" can be replaced with "A instructs B" or "A is used to determine B".

[0244] In this application embodiment, "predefined" or "preconfigured" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0245] In this application embodiment, the "protocol" may refer to a standard protocol in the field of communication, such as the LTE protocol, the NR protocol, and related protocols applied to future communication systems. This application does not limit this.

[0246] In the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0247] In the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0248] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0249] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0250] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0251] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can read or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs, DVDs) or semiconductor media (e.g., solid-state disks, SSDs), etc.

[0252] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for wireless communication, characterized in that, include: The first device sends a first physical layer protocol data unit (PPDU) to the second device; The first PPDU includes one or more of the following: Traditional lead; The first information field is used to carry data and / or control information; The second information field is used for signal synchronization; The third information field is used to indicate the transmission parameters used in the first information field.

2. The method according to claim 1, characterized in that, The conventional preamble includes a first modulation and coding scheme and / or a first data rate, wherein the first modulation and coding scheme is a binary phase shift keying (BPSK) modulation scheme, and the first data rate is the lowest data rate supported by the first information domain.

3. The method according to claim 2, characterized in that, The first data rate is 1 Mbps.

4. The method according to any one of claims 1-3, characterized in that: The conventional leader includes one or more of the following: conventional short training domain, conventional long training domain, conventional signal domain; or... The conventional preamble includes one or more of the following: a synchronization field, a start-of-frame delimiter field, and a physical layer convergence protocol header field.

5. The method according to any one of claims 1-4, characterized in that, The first PPDU includes a fourth information field, which is used to determine the recipient of the first PPDU.

6. The method according to claim 5, characterized in that, The fourth information field occupies one or more symbols, the number of which is determined based on the number of symbols processed by the receiver of the first PPDU when distinguishing PPDU formats.

7. The method according to claim 6, characterized in that, The number of the one or more symbols is equal to the number of symbols processed by the receiver of the first PPDU when distinguishing PPDU formats.

8. The method according to any one of claims 5-7, characterized in that, The fourth information field adopts the second modulation and coding scheme, which is different from the differential binary phase shift keying (DBPSK) modulation scheme.

9. The method according to claim 8, characterized in that, The second modulation and coding scheme includes one or more of the following: BPSK modulation scheme, orthogonal binary phase shift keying (QBPSK) modulation scheme, and orthogonal frequency division multiplexing (OFDM) modulation scheme using BPSK modulation.

10. The method according to any one of claims 1-9, characterized in that, The second information field occupies the same chip duration for different data rates; or, the chip duration occupied by the second information field is determined according to the data rate.

11. The method according to any one of claims 1-10, characterized in that, The chip duration occupied by the third information field is the same as the chip duration occupied by the second information field; or, the chip duration occupied by the third information field is different from the chip duration occupied by the second information field.

12. The method according to claim 11, characterized in that, The chip duration occupied by the third information field differs from the chip duration occupied by the second information field, including: The chip duration occupied by the second information field remains constant at different data rates, while the chip duration occupied by the third information field varies with the data rate; and / or The duration of the chip occupied by the second information field varies with the data rate, while the duration of the chip occupied by the third information field remains constant under different data rates.

13. The method according to any one of claims 1-12, characterized in that, The first PPDU is an uplink PPDU or a downlink PPDU, wherein the chip duration occupied by the second information field in the uplink PPDU is different from the chip duration occupied by the second information field in the downlink PPDU.

14. The method according to any one of claims 1-13, characterized in that, The first PPDU is an uplink PPDU, and the synchronization configuration used in the second information field of the first PPDU is indicated by the second PPDU, which is a downlink PPDU.

15. The method according to claim 14, characterized in that, The second information field in the first PPDU uses a synchronization configuration carried by one or more of the following: The third information field of the second PPDU; The Media Access Control (MAC) header of the second PPDU.

16. The method according to any one of claims 1-15, characterized in that, The first PPDU is a downlink PPDU, used to address one or more devices, wherein the first information field of the first PPDU includes one or more of the following: Identification of one or more devices; Identifiers for one or more groups of devices.

17. The method according to claim 16, characterized in that, Each of the identifiers of the one or more devices and / or the group of one or more devices is carried by a first bit, the value of which is indicated by one or more of the following: The third information field of the first PPDU; The MAC header of the first PPDU.

18. The method according to claim 16 or 17, characterized in that, The maximum number of identifiers that the first information field can support is indicated by one or more of the following: The third information field of the first PPDU; The MAC header of the first PPDU.

19. The method according to any one of claims 16-18, characterized in that, The third information field or MAC header of the first PPDU includes first indication information, which is used to indicate the identifier of the device or the identifier of the device group contained in the first information field.

20. The method according to any one of claims 1-19, characterized in that: The first PPDU is an uplink PPDU, and the first device is an AMP device; or The first PPDU is a downlink PPDU, and the second device is an AMP device.

21. A method for wireless communication, characterized in that, include: The second device receives the first physical layer protocol data unit (PPDU) sent by the first device. The first PPDU includes one or more of the following: Traditional lead; The first information field is used to carry data and / or control information; The second information field is used for signal synchronization; The third information field is used to indicate the transmission parameters used in the first information field.

22. The method according to claim 21, characterized in that, The conventional preamble includes a first modulation and coding scheme and / or a first data rate, wherein the first modulation and coding scheme is a binary phase shift keying (BPSK) modulation scheme, and the first data rate is the lowest data rate supported by the first information domain.

23. The method according to claim 22, characterized in that, The first data rate is 1 Mbps.

24. The method according to any one of claims 21-23, characterized in that: The conventional leader includes one or more of the following: conventional short training domain, conventional long training domain, conventional signal domain; or... The conventional preamble includes one or more of the following: a synchronization field, a start-of-frame delimiter field, and a physical layer convergence protocol header field.

25. The method according to any one of claims 21-24, characterized in that, The first PPDU includes a fourth information field, which is used to determine the recipient of the first PPDU.

26. The method according to claim 25, characterized in that, The fourth information field occupies one or more symbols, the number of which is determined based on the number of symbols processed by the receiver of the first PPDU when distinguishing PPDU formats.

27. The method according to claim 26, characterized in that, The number of the one or more symbols is equal to the number of symbols processed by the receiver of the first PPDU when distinguishing PPDU formats.

28. The method according to any one of claims 25-27, characterized in that, The fourth information field adopts the second modulation and coding scheme, which is different from the differential binary phase shift keying (DBPSK) modulation scheme.

29. The method according to claim 28, characterized in that, The second modulation and coding scheme includes one or more of the following: BPSK modulation scheme, orthogonal binary phase shift keying (QBPSK) modulation scheme, and orthogonal frequency division multiplexing (OFDM) modulation scheme using BPSK modulation.

30. The method according to any one of claims 21-29, characterized in that, The second information field occupies the same chip duration for different data rates; or, the chip duration occupied by the second information field is determined according to the data rate.

31. The method according to any one of claims 21-30, characterized in that, The chip duration occupied by the third information field is the same as the chip duration occupied by the second information field; or, the chip duration occupied by the third information field is different from the chip duration occupied by the second information field.

32. The method according to claim 31, characterized in that, The chip duration occupied by the third information field differs from the chip duration occupied by the second information field, including: The chip duration occupied by the second information field remains constant at different data rates, while the chip duration occupied by the third information field varies with the data rate; and / or The duration of the chip occupied by the second information field varies with the data rate, while the duration of the chip occupied by the third information field remains constant under different data rates.

33. The method according to any one of claims 21-32, characterized in that, The first PPDU is an uplink PPDU or a downlink PPDU, wherein the chip duration occupied by the second information field in the uplink PPDU is different from the chip duration occupied by the second information field in the downlink PPDU.

34. The method according to any one of claims 21-33, characterized in that, The first PPDU is an uplink PPDU, and the synchronization configuration used in the second information field of the first PPDU is indicated by the second PPDU, which is a downlink PPDU.

35. The method according to claim 34, characterized in that, The second information field in the first PPDU uses a synchronization configuration carried by one or more of the following: The third information field of the second PPDU; The Media Access Control (MAC) header of the second PPDU.

36. The method according to any one of claims 21-35, characterized in that, The first PPDU is a downlink PPDU, used to address one or more devices, wherein the first information field of the first PPDU includes one or more of the following: Identification of one or more devices; Identifiers for one or more groups of devices.

37. The method according to claim 36, characterized in that, Each of the identifiers of the one or more devices and / or the group of one or more devices is carried by a first bit, the value of which is indicated by one or more of the following: The third information field of the first PPDU; The MAC header of the first PPDU.

38. The method according to claim 36 or 37, characterized in that, The maximum number of identifiers that the first information field can support is indicated by one or more of the following: The third information field of the first PPDU; The MAC header of the first PPDU.

39. The method according to any one of claims 36-38, characterized in that, The third information field or MAC header of the first PPDU includes first indication information, which is used to indicate the identifier of the device or the identifier of the device group contained in the first information field.

40. The method according to any one of claims 21-39, characterized in that: The first PPDU is an uplink PPDU, and the first device is an AMP device; or The first PPDU is a downlink PPDU, and the second device is an AMP device.

41. A communication device, characterized in that, The communication device is a first device, and the communication device includes: The sending module is used to send the first physical layer protocol data unit (PPDU) to the second device; The first PPDU includes one or more of the following: Traditional lead; The first information field is used to carry data and / or control information; The second information field is used for signal synchronization; The third information field is used to indicate the transmission parameters used in the first information field.

42. The communication device according to claim 41, characterized in that, The conventional preamble includes a first modulation and coding scheme and / or a first data rate, wherein the first modulation and coding scheme is a binary phase shift keying (BPSK) modulation scheme, and the first data rate is the lowest data rate supported by the first information domain.

43. The communication device according to claim 42, characterized in that, The first data rate is 1 Mbps.

44. The communication device according to any one of claims 41-43, characterized in that: The conventional leader includes one or more of the following: conventional short training domain, conventional long training domain, conventional signal domain; or... The conventional preamble includes one or more of the following: a synchronization field, a start-of-frame delimiter field, and a physical layer convergence protocol header field.

45. The communication device according to any one of claims 41-44, characterized in that, The first PPDU includes a fourth information field, which is used to determine the recipient of the first PPDU.

46. ​​The communication device according to claim 45, characterized in that, The fourth information field occupies one or more symbols, the number of which is determined based on the number of symbols processed by the receiver of the first PPDU when distinguishing PPDU formats.

47. The communication device according to claim 46, characterized in that, The number of the one or more symbols is equal to the number of symbols processed by the receiver of the first PPDU when distinguishing PPDU formats.

48. The communication device according to any one of claims 45-47, characterized in that, The fourth information field adopts the second modulation and coding scheme, which is different from the differential binary phase shift keying (DBPSK) modulation scheme.

49. The communication device according to claim 48, characterized in that, The second modulation and coding scheme includes one or more of the following: BPSK modulation scheme, orthogonal binary phase shift keying (QBPSK) modulation scheme, and orthogonal frequency division multiplexing (OFDM) modulation scheme using BPSK modulation.

50. The communication device according to any one of claims 41-49, characterized in that, The second information field occupies the same chip duration for different data rates; or, the chip duration occupied by the second information field is determined according to the data rate.

51. The communication device according to any one of claims 41-50, characterized in that, The chip duration occupied by the third information field is the same as the chip duration occupied by the second information field; or, the chip duration occupied by the third information field is different from the chip duration occupied by the second information field.

52. The communication device according to claim 51, characterized in that, The chip duration occupied by the third information field differs from the chip duration occupied by the second information field, including: The chip duration occupied by the second information field remains constant at different data rates, while the chip duration occupied by the third information field varies with the data rate; and / or The duration of the chip occupied by the second information field varies with the data rate, while the duration of the chip occupied by the third information field remains constant under different data rates.

53. The communication device according to any one of claims 41-52, characterized in that, The first PPDU is an uplink PPDU or a downlink PPDU, wherein the chip duration occupied by the second information field in the uplink PPDU is different from the chip duration occupied by the second information field in the downlink PPDU.

54. The communication device according to any one of claims 41-53, characterized in that, The first PPDU is an uplink PPDU, and the synchronization configuration used in the second information field of the first PPDU is indicated by the second PPDU, which is a downlink PPDU.

55. The communication device according to claim 54, characterized in that, The second information field in the first PPDU uses a synchronization configuration carried by one or more of the following: The third information field of the second PPDU; The Media Access Control (MAC) header of the second PPDU.

56. The communication device according to any one of claims 41-55, characterized in that, The first PPDU is a downlink PPDU, used to address one or more devices, wherein the first information field of the first PPDU includes one or more of the following: Identification of one or more devices; Identifiers for one or more groups of devices.

57. The communication device according to claim 56, characterized in that, Each of the identifiers of the one or more devices and / or the group of one or more devices is carried by a first bit, the value of which is indicated by one or more of the following: The third information field of the first PPDU; The MAC header of the first PPDU.

58. The communication device according to claim 56 or 57, characterized in that, The maximum number of identifiers that the first information field can support is indicated by one or more of the following: The third information field of the first PPDU; The MAC header of the first PPDU.

59. The communication device according to any one of claims 56-58, characterized in that, The third information field or MAC header of the first PPDU includes first indication information, which is used to indicate the identifier of the device or the identifier of the device group contained in the first information field.

60. The communication device according to any one of claims 41-59, characterized in that: The first PPDU is an uplink PPDU, and the first device is an AMP device; or The first PPDU is a downlink PPDU, and the second device is an AMP device.

61. A communication device, characterized in that, The communication device is a second device, and the communication device includes: The receiving module is used to receive the first physical layer protocol data unit (PPDU) sent by the first device; The first PPDU includes one or more of the following: Traditional lead; The first information field is used to carry data and / or control information; The second information field is used for signal synchronization; The third information field is used to indicate the transmission parameters used in the first information field.

62. The communication device according to claim 61, characterized in that, The conventional preamble includes a first modulation and coding scheme and / or a first data rate, wherein the first modulation and coding scheme is a binary phase shift keying (BPSK) modulation scheme, and the first data rate is the lowest data rate supported by the first information domain.

63. The communication device according to claim 62, characterized in that, The first data rate is 1 Mbps.

64. The communication device according to any one of claims 61-63, characterized in that: The conventional leader includes one or more of the following: conventional short training domain, conventional long training domain, conventional signal domain; or... The conventional preamble includes one or more of the following: a synchronization field, a start-of-frame delimiter field, and a physical layer convergence protocol header field.

65. The communication device according to any one of claims 61-64, characterized in that, The first PPDU includes a fourth information field, which is used to determine the recipient of the first PPDU.

66. The communication device according to claim 65, characterized in that, The fourth information field occupies one or more symbols, the number of which is determined based on the number of symbols processed by the receiver of the first PPDU when distinguishing PPDU formats.

67. The communication device according to claim 66, characterized in that, The number of the one or more symbols is equal to the number of symbols processed by the receiver of the first PPDU when distinguishing PPDU formats.

68. The communication device according to any one of claims 65-67, characterized in that, The fourth information field adopts the second modulation and coding scheme, which is different from the differential binary phase shift keying (DBPSK) modulation scheme.

69. The communication device according to claim 68, characterized in that, The second modulation and coding scheme includes one or more of the following: BPSK modulation scheme, orthogonal binary phase shift keying (QBPSK) modulation scheme, and orthogonal frequency division multiplexing (OFDM) modulation scheme using BPSK modulation.

70. The communication device according to any one of claims 61-69, characterized in that, The second information field occupies the same chip duration for different data rates; or, the chip duration occupied by the second information field is determined according to the data rate.

71. The communication device according to any one of claims 61-70, characterized in that, The chip duration occupied by the third information field is the same as the chip duration occupied by the second information field; or, the chip duration occupied by the third information field is different from the chip duration occupied by the second information field.

72. The communication device according to claim 71, characterized in that, The chip duration occupied by the third information field differs from the chip duration occupied by the second information field, including: The chip duration occupied by the second information field remains constant at different data rates, while the chip duration occupied by the third information field varies with the data rate; and / or The duration of the chip occupied by the second information field varies with the data rate, while the duration of the chip occupied by the third information field remains constant under different data rates.

73. The communication device according to any one of claims 61-72, characterized in that, The first PPDU is an uplink PPDU or a downlink PPDU, wherein the chip duration occupied by the second information field in the uplink PPDU is different from the chip duration occupied by the second information field in the downlink PPDU.

74. The communication device according to any one of claims 61-73, characterized in that, The first PPDU is an uplink PPDU, and the synchronization configuration used in the second information field of the first PPDU is indicated by the second PPDU, which is a downlink PPDU.

75. The communication device according to claim 74, characterized in that, The second information field in the first PPDU uses a synchronization configuration carried by one or more of the following: The third information field of the second PPDU; The Media Access Control (MAC) header of the second PPDU.

76. The communication device according to any one of claims 61-75, characterized in that, The first PPDU is a downlink PPDU, used to address one or more devices, wherein the first information field of the first PPDU includes one or more of the following: Identification of one or more devices; Identifiers for one or more groups of devices.

77. The communication device according to claim 76, characterized in that, Each of the identifiers of the one or more devices and / or the group of one or more devices is carried by a first bit, the value of which is indicated by one or more of the following: The third information field of the first PPDU; The MAC header of the first PPDU.

78. The communication device according to claim 76 or 77, characterized in that, The maximum number of identifiers that the first information field can support is indicated by one or more of the following: The third information field of the first PPDU; The MAC header of the first PPDU.

79. The communication device according to any one of claims 76-78, characterized in that, The third information field or MAC header of the first PPDU includes first indication information, which is used to indicate the identifier of the device or the identifier of the device group contained in the first information field.

80. The communication device according to any one of claims 61-79, characterized in that: The first PPDU is an uplink PPDU, and the first device is an AMP device; or The first PPDU is a downlink PPDU, and the second device is an AMP device.

81. A communication device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or transmit signals so that the communication device performs the method as described in any one of claims 1-20 or 21-40.

82. An apparatus, characterized in that, Includes a processor for calling a program from memory to cause the apparatus to perform the method as described in any one of claims 1-20 or 21-40.

83. A chip, characterized in that, Includes a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 1-20 or 21-40.

84. A computer-readable storage medium, characterized in that, It contains a program that causes a computer to perform the method as described in any one of claims 1-20 or 21-40.

85. A computer program product, characterized in that, Includes a program that causes a computer to perform the method as described in any one of claims 1-20 or 21-40.

86. A computer program, characterized in that, The computer program causes the computer to perform the method as described in any one of claims 1-20 or 21-40.

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