Information transmission method and device, equipment and storage medium

Abstract

An information transmission method, device, equipment and storage medium, relating to the technical field of communication. The method is executed by an AMP STA, and the method comprises: receiving a beacon frame sent by an AP, the beacon frame being carried in a PPDU, the PPDU having the same frame format as a WUR PPDU (610). By adopting the PPDU having the same frame format as the WUR PPDU to carry the AMP beacon frame, it is not necessary to design a corresponding PPDU frame format for the AMP STA alone, and the complexity of the design of a communication system can be effectively reduced.

Description

Information transmission method, device, equipment and storage medium Technical Field

[0001] The embodiments of the present application relate to the field of communication technology, and in particular to an information transmission method, apparatus, device, and storage medium. Background Art

[0002] Future WiFi (Wireless Fidelity) systems may support AMP IoT (Ambient Internet of Things) devices, whose receiver structures share certain similarities with current WUR (Wake-Up Radio) receivers, such as low complexity and low power consumption. AMP IoT devices may coexist with EUR-supported devices in the same system. Therefore, during downlink transmission, the AP (Access Point) must support sending signals to both AMP IoT devices and WURs. Enabling APs to support both AMP IoT and WURs remains a challenge.

[0003] Summary of the Invention

[0004] The embodiments of the present application provide an information transmission method, apparatus, device, and storage medium. The technical solution is as follows:

[0005] According to one aspect of an embodiment of the present application, a method for information transmission is provided. The method is performed by an AMP STA (Station), and the method includes:

[0006] A beacon frame sent by an AP is received, where the beacon frame is carried in a PPDU (Presentation Protocol Data Unit), and the PPDU has the same frame format as the WUR PPDU.

[0007] According to one aspect of an embodiment of the present application, a method for information transmission is provided, where the method is performed by an AP and includes:

[0008] A beacon frame is sent to the AMP STA, where the beacon frame is carried in a PPDU having the same frame format as the WUR PPDU.

[0009] According to one aspect of an embodiment of the present application, there is provided an information transmission device, the device comprising:

[0010] The receiving module is used to receive the beacon frame sent by the AP, where the beacon frame is carried in the PPDU, and the PPDU has the same frame format as the WUR PPDU.

[0011] According to one aspect of an embodiment of the present application, there is provided an information transmission device, the device comprising:

[0012] The sending module is used to send a beacon frame to the AMP STA, where the beacon frame is carried in a PPDU, and the PPDU has the same frame format as the WUR PPDU.

[0013] According to one aspect of an embodiment of the present application, a communication device is provided, comprising a processor and a memory, wherein the memory stores a computer program, and the processor executes the computer program to implement the above-mentioned information transmission method. The communication device is a terminal device, or the communication device is a network device.

[0014] According to one aspect of an embodiment of the present application, a computer-readable storage medium is provided, in which a computer program is stored. The computer program is configured to be executed by a processor to implement the above-mentioned information transmission method.

[0015] According to one aspect of an embodiment of the present application, a chip is provided, which includes a programmable logic circuit and / or program instructions, and when the chip is running, is used to implement the above-mentioned information transmission method.

[0016] According to one aspect of an embodiment of the present application, a computer program product is provided, which includes computer instructions stored in a computer-readable storage medium. A processor reads and executes the computer instructions from the computer-readable storage medium to implement the above-mentioned information transmission method.

[0017] The technical solutions provided by the embodiments of the present application may have the following beneficial effects:

[0018] By using a PPDU with the same frame format as the WUR PPDU to carry the AMP beacon frame, there is no need to design a corresponding PPDU frame format separately for the AMP STA, which can effectively reduce the complexity of the communication system design. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic diagram of a network architecture provided by an embodiment of the present application;

[0020] FIG2 is a schematic diagram of the structure of a WUR PPDU provided by an embodiment of the present application;

[0021] FIG3 is a schematic diagram of OOK (On-Off Keying) modulation provided by one embodiment of the present application;

[0022] FIG4 is a schematic diagram of OOK modulation provided by another embodiment of the present application;

[0023] FIG5 is a schematic diagram of generating an MC-OOK signal through a multi-carrier (MC) according to an embodiment of the present application;

[0024] FIG6 is a flowchart of an information transmission method provided by an embodiment of the present application;

[0025] FIG7 is a schematic diagram of a MAC (Medium Access Control) frame structure provided by one embodiment of the present application;

[0026] FIG8 is a schematic diagram of the structure of a MAC header provided by an embodiment of the present application;

[0027] FIG9 is a schematic diagram of the structure of a frame control field provided by an embodiment of the present application;

[0028] FIG10 is a block diagram of an information transmission device provided by an embodiment of the present application;

[0029] FIG11 is a block diagram of an information transmission device provided by another embodiment of the present application;

[0030] FIG12 is a schematic diagram of the structure of an AMP STA provided by one embodiment of the present application;

[0031] FIG13 is a schematic diagram of the structure of an AP provided in one embodiment of the present application. DETAILED DESCRIPTION

[0032] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0033] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. A person skilled in the art will appreciate that, with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.

[0034] Please refer to FIG1 , which shows a schematic diagram of a network architecture 100 provided by an embodiment of the present application. The network architecture 100 may include: a terminal device 10 , an access network device 20 , and a core network element 30 .

[0035] The terminal device 10 may refer to a UE (User Equipment), a STA, an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a wireless communication device, a user agent, or a user apparatus. In some embodiments, the terminal device 10 may also be a cellular phone, a cordless phone, a SIP (Session Initiation Protocol) phone, a WLL (Wireless Local Loop) station, a PDA (Personal Digital Assistant), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5GS (5th Generation System) or a terminal device in a future evolved PLMN (Public Land Mobile Network), etc., and the embodiments of the present application are not limited thereto. For ease of description, the above-mentioned devices are collectively referred to as terminal devices. The number of terminal devices 10 is generally multiple, and one or more terminal devices 10 may be distributed in a cell managed by each access network device 20. The terminal device may also be referred to as a terminal or UE for short, and those skilled in the art will understand its meaning.

[0036] Access network equipment 20 is a device deployed in an access network to provide wireless communication capabilities for terminal devices 10. Access network equipment 20 may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems employing different wireless access technologies, the names of devices that provide access network equipment functions may vary. For example, in 5G NR systems, they are referred to as gNodeBs or gNBs. As communication technologies evolve, the term "access network equipment" may change. For ease of description, in the embodiments of this application, the aforementioned devices that provide wireless communication capabilities for terminal devices 10 are collectively referred to as access network equipment. In some embodiments, access network equipment 20 enables communication between terminal devices 10 and core network elements 30. For example, in an LTE (Long Term Evolution) system, access network equipment 20 may be an Evolved Universal Terrestrial Radio Access Network (EUTRAN) or one or more eNodeBs within EUTRAN. In a 5G NR system, access network equipment 20 may be a Radio Access Network (RAN) or one or more gNBs within the RAN. In the embodiment of the present application, unless otherwise specified, the "network device" refers to the access network device 20, such as a base station.

[0037] The core network element 30 is a network element deployed in the core network. The main function of the core network element 30 is to provide user connectivity, user management, and service bearer. It also provides an interface to the external network as a bearer network. For example, the core network elements in the 5G NR system may include network elements such as the AMF (Access and Mobility Management Function) entity, the UPF (User Plane Function) entity, and the SMF (Session Management Function) entity.

[0038] In some embodiments, the access network device 20 and the core network element 30 communicate with each other via an air interface technology, such as the NG interface in the 5G NR system. The access network device 20 and the terminal device 10 communicate with each other via an air interface technology, such as the Uu interface.

[0039] The "5G NR system" in the embodiments of the present application may also be referred to as a 5G system or an NR system, but those skilled in the art will understand its meaning. The technical solutions described in the embodiments of the present application may be applicable to LTE systems, 5G NR systems, and subsequent evolution systems of 5G NR systems (e.g., B5G (Beyond 5G) systems, 6G systems (6th Generation System, sixth generation mobile communication systems)), and other communication systems such as NB-IoT (Narrow Band Internet of Things) systems, which are not limited in this application.

[0040] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources (for example, frequency domain resources, or spectrum resources) on the carrier used by the cell. The cell can be a cell corresponding to the network device (for example, a base station). The cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cell, micro cell, pico cell, femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0041] Before introducing the technical solutions of this application, we first introduce and explain some of the relevant technical knowledge involved in this application. The following related technologies can be combined with the technical solutions of the embodiments of this application as optional solutions, and they all fall within the scope of protection of the embodiments of this application. The embodiments of this application include at least part of the following contents.

[0042] 1. Cellular Passive Internet of Things

[0043] As 5G industry applications expand, the types of connected objects and application scenarios will increase, placing higher demands on the price and power consumption of communication terminals. The application of battery-free, low-cost passive IoT devices has become a key technology for cellular IoT, expanding the types and number of terminals connected to 5G networks and truly realizing the interconnection of everything. Passive IoT devices can be based on existing zero-power devices, such as RFID (Radio Frequency Identification), and can be extended to suit cellular IoT.

[0044] 2. Classification of Zero-Power Terminal Equipment

[0045] Based on the energy source and usage of zero-power terminal devices, terminal devices can be divided into the following categories:

[0046] 1) Passive zero-power terminal equipment

[0047] Zero-power terminal devices do not require internal batteries. When they approach network equipment (such as an RFID reader), they are within the near-field radiation generated by the network equipment's antenna. Consequently, the zero-power terminal's antenna generates an induced current through electromagnetic induction, which drives the device's low-power chip circuitry. This enables forward link signal demodulation and reverse link signal modulation. For the reverse link, the zero-power terminal uses backscatter or low-power active transmission communication methods to transmit signals.

[0048] It can be seen that the passive zero-power terminal device does not require a built-in battery to drive either the forward link or the reverse link, and is a true zero-power terminal.

[0049] Passive zero-power terminal devices do not require batteries, and the RF circuit and baseband circuit are very simple. For example, they do not require LNA (Low Noise Amplifier), PA (Power Amplifier), crystal oscillator, ADC (Analog to Digital Converter) and other devices. Therefore, they have many advantages such as small size, light weight, very low price and long service life.

[0050] 2) Semi-passive zero-power terminal equipment

[0051] Semi-passive zero-power terminal devices do not have conventional batteries themselves, but instead use RF energy harvesting modules to harvest radio wave energy or environmental energy (such as solar energy, thermal energy, and mechanical vibration energy). This harvested energy is then stored in an energy storage unit (such as a capacitor). The energy storage unit then powers the low-power chip circuitry of the zero-power terminal device, performing tasks such as demodulating forward link signals and modulating reverse link signals. For the reverse link, the zero-power terminal device uses backscatter or low-power active transmission communication methods to transmit signals.

[0052] It can be seen that the semi-passive zero-power terminal device does not require a built-in battery to drive either the forward link or the reverse link. Although energy stored in capacitors is used during operation, the energy comes from the radio energy collected by the energy harvesting module. Therefore, it is also a true zero-power terminal.

[0053] Semi-passive zero-power terminal equipment inherits many advantages of passive zero-power terminal equipment, so it has many advantages such as small size, light weight, very low price, and long service life.

[0054] 3) Active zero-power terminal equipment

[0055] In some scenarios, zero-power terminals can also be active zero-power terminals, which can have built-in batteries. The battery is used to drive the low-power chip circuits of the zero-power terminal device. This enables tasks such as demodulating forward link signals and modulating backward link signals. However, for backscatter links, zero-power terminal devices use backscattering or active transmission to transmit signals. Although these active zero-power terminal devices have built-in batteries, they have extremely low power consumption and complexity, allowing for smaller batteries, resulting in lower costs and size. The built-in battery can also serve as an energy storage unit, allowing the energy harvesting module to store collected ambient energy, thereby achieving a longer maintenance cycle or even no maintenance.

[0056] Active zero-power terminal devices are powered by built-in batteries to increase their communication range and improve communication reliability. Therefore, they are used in scenarios with relatively high requirements for communication distance and read latency.

[0057] 3. Equipment based on ambient energy

[0058] In NR and Wi-Fi systems, the battery-free and low-cost nature of devices enables low-cost, large-scale deployment and maintenance-free IoT devices. Current standards are exploring how to support ambient energy-based IoT devices in NR and Wi-Fi systems. These devices, known as Ambient IoT or AMP IoT (Ambient Energy IoT Devices), operate from ambient energy harvested from wireless signals, solar energy, thermal energy, and other sources. These devices are similar to passive or semi-passive devices in zero-power communications.

[0059] 4. Wake-up signal

[0060] In the 802.11ba technology, WUR signals are used to achieve energy saving of devices. The WUR AP notifies the WUR non-AP STA (i.e., WUR STA) of energy saving operations through the WUR wake-up frame. The wake-up frame is carried in the WUR PPDU frame. As shown in Figure 2, a WUR PPDU frame contains three parts: legacy preamble, WUR-Sync, and WUR-Data. The legacy preamble is used to protect the WUR-Sync and WUR-Data parts. It is a non-WUR part retained for compatibility reasons. It uses traditional OFDM (Orthogonal Frequency Division Multiplexing) modulation and 20MHz bandwidth. WUR-Sync is used to help identify and demodulate the WUR-data part, and the WUR-Data part is used to carry the WUR PSDU (Physical Layer (PHY) Service Data Unit).

[0061] The WUR-Sync and WUR-data sections use OOK modulation and a 4MHz bandwidth. OOK modulation modulates the carrier signal's amplitude to non-zero and zero values, corresponding to "on" and "off," respectively, to represent information bits. OOK is also known as binary amplitude shift keying (2ASK). As shown in Figure 3, the WUR-Sync section carries a synchronization sequence repeated twice, with bits 1 modulated as "on" and 0 as "off."

[0062] The synchronization sequence uses a predefined 32-bit sequence W. Different sequences indicate different data rates used by the WUR-data part. The synchronization sequence corresponding to WUR LDR (Low Data Rate) is as follows: W = [1 0 1 0 0 1 0 0 1 0 1 1 1 0 1 1 0 0 0 1 0 1 1 1 0 0 1 1 1 0 0 0]

[0063] The synchronization sequence corresponding to WUR HDR (High Data Rate) is as follows: W = [0 1 0 1 1 0 1 1 0 1 0 0 0 1 0 0 1 1 1 0 1 0 0 0 1 1 0 0 0 1 1 1]

[0064] Each bit in the WUR-Sync part is OOK modulated and mapped into a 2μs MC-OOK symbol.

[0065] The WUR-data part carries user information. After the user information is encoded, it is modulated using OOK to form MC-OOK symbols of corresponding length, as shown in Figure 4.

[0066] Among them, the MC-OOK symbol lengths corresponding to WUR LDR and WUR HDR are 4μs and 2μs respectively.

[0067] The above-mentioned OOK signal is generated through multi-carrier (MC), so it is called MC-OOK signal. The generation of MC-OOK signal can adopt existing multi-carrier modulation such as OFDM modulation to generate OOK signal, which can maintain good compatibility with the existing OFDM system and reduce the transmitter complexity introduced by implementing WUR signal. Figure 5 is a schematic diagram of MC-OOK signal generated by multi-carrier. By mapping the corresponding amplitude values ​​to multiple subcarriers in the frequency domain, the waveform of the time domain signal converted to by IDFT is similar to the waveform formed by ASK modulation, where bit 1 is represented by the high level of the signal and bit 0 is represented by the low level of the signal.

[0068] Future Wi-Fi systems may support AMP IoT devices, whose receiver architecture shares similarities with the WUR in current 802.11ba technology, such as reduced complexity and low power consumption. AMP IoT devices may coexist with 802.11ba-enabled devices in the same system. Therefore, during downlink transmission, the AP must support signaling to both AMP IoT devices and WUR. Enabling APs to support both AMP IoT and WUR signals remains a challenge.

[0069] In this regard, an embodiment of the present application provides a solution that can reuse the frame structure of the WUR PPDU to transmit the PPDU of the AMP STA. There is no need to design a new PPDU frame format for the AMP STA, which can reduce the complexity of the system design.

[0070] Please refer to Figure 6, which shows a flow chart of an information transmission method provided by an embodiment of the present application. The method can be applied to the network architecture shown in Figure 1. The method includes the following step 610.

[0071] In step 610, the AMP STA receives a beacon frame sent by the AP. The beacon frame is carried in the PPDU, and the PPDU has the same frame format as the WUR PPDU.

[0072] Accordingly, the AP sends a beacon frame to the AMP STA.

[0073] In some embodiments, AMP STA means that the STA is an AMP IoT device.

[0074] In some embodiments, the downlink signals of the AMP STA and the WUR have the same waveform, such as an OOK waveform.

[0075] In some embodiments, for WUR, WUR acts as a wake-up receiver for WUR STA, and its main purpose is to receive a wake-up signal when the main receiver is turned off, so as to achieve power saving for WUR STA. The WUR beacon frame is carried by WUR PPDU, but the WUR PPDU only carries timestamp information and BSS parameter update indication information, where the timestamp information is used for time synchronization, and the BSS (basic service set) parameter update indication information is used to indicate that important updates have occurred to the BSS parameters. The beacon frame of WUR STA is still received through the main receiver. This results in the reserved bits in the WUR PPDU used to carry the WUR beacon frame being difficult to meet the beacon frame requirements of the AMP STA. How to solve the problem of multiplexing the frame format of the WUR PPDU to send beacon frames to the AMP STA requires further discussion.

[0076] In some embodiments, the MAC frame format also includes a MAC header, which is used to carry the type information of the PPDU. First, the frame format of the WUR PPDU is introduced. PPDU is a frame structure of the physical layer, and the data therein is encapsulated at the MAC layer. The MAC frame format of the WUR is shown in Figure 7, which includes three parts: a MAC header, a frame body, and an FCS (Frame Check Sequence, also known as a frame tail).

[0077] In some embodiments, the MAC header includes a frame control field and an ID field; wherein the frame control field includes a type field and a frame body present field, the type field is used to indicate the type of the PPDU, and the frame body present field is used to indicate the status of the frame body; the ID field is used to carry the ID of the AP. As shown in Figure 8, the MAC header includes three parts: a frame control field (Frame Control), an ID field, and a type-dependent control field (Type Dependent Control). As shown in Figure 9, the frame control field contains the following information fields: a type field (Type), a protection field (Protected), a frame body present field (Frame Body Present), and a length or miscellaneous field (Length / Miscellaneous). Among them, the type field is used to indicate the type of the PPDU. As shown in Table 1, in the WUR PPDU, the type field can follow the following format to indicate the type of the WUR PPDU.

[0078] Table 1: WUR frame types

[0079] In some embodiments, the frame body presence field is used to indicate the status of the frame body, and in a WUR PPDU, if the WUR PPDU is used to indicate a WUR beacon frame, the frame body presence field is used to indicate the absence of the frame body field, and the timestamp information in the WUR beacon frame is indicated by the type-related control field. For example, in a WUR PPDU, if the PPDU carries a WUR beacon frame, the frame body presence field will indicate the absence of the frame body field, the type-related control field is used to indicate the timestamp information, and the type field indicates 0, indicating that the PPDU is used to carry a WUR beacon.

[0080] In some embodiments, the data of the beacon frame is carried in the frame body of the MAC frame format.

[0081] Based on the above introduction to the WUR PPDU, it can be seen that the data of the AMP STA's beacon frame is more suitable for being carried in the frame body of the MAC frame format. However, a new problem arises at this time. It is difficult for the AMP STA and the WUR STA to distinguish whether the PPDU sent by the AP is sent to the AMP STA or the WUR STA. Based on the frame format of the WUR PPDU, the embodiments of the present application provide the following solutions, which can be used to distinguish the data content carried in the PPDU sent by the AP.

[0082] Solution 1: Use the type field in the frame control field to distinguish between WUR PPDU and AMP PPDU

[0083] 1. The type field indicates the first value

[0084] In some embodiments, if the frame body presence field indicates a first state and the type field indicates a first value, the AMP STA parses the beacon frame, and the first value is used to indicate that the PPDU carries a WUR beacon frame.

[0085] Correspondingly, if the beacon frame is sent to the first STA, the AP indicates the first state in the frame body field, and the type field indicates the first value, which is used to indicate that the PPDU carries a WUR beacon frame.

[0086] In some embodiments, if the frame body presence field indicates the second state, the AMP STA discards the beacon frame.

[0087] Correspondingly, if the beacon frame is sent to the second STA, the AP indicates the second state in the field appearing in the frame body.

[0088] In some embodiments, the first state indicates the presence of the Frame Body field, and the second state indicates the absence of the Frame Body field. In some embodiments, since the data of the AMP STA beacon frame is carried in the MAC frame format, if the PPDU is used to transmit the AMP STA beacon frame, the Frame Body field should indicate the first state.

[0089] However, in a WUR PPDU, the Body field may also indicate the first state when indicating certain content. Therefore, the Body field alone cannot distinguish whether the PPDU is sent to a WUR STA or an AMP STA. Therefore, another field is required to assist in the distinction. In some embodiments, the Type field can be used to assist the Body field to distinguish whether the PPDU is sent to a WUR STA or an AMP STA.

[0090] In some embodiments, for a WUR PPDU, if the PPDU indicates a WUR beacon frame, the type field of the PPDU indicates a first value, indicating that the PPDU carries a WUR beacon frame, and the frame body presence field indicates a second state, that is, the absence of the frame body field. In this case, if the frame body presence field indicates the first state, that is, the presence of the frame body field, and the type field indicates the first value, the WUR STA will consider the PPDU to be erroneous and will discard the PPDU. Therefore, this solution can be used to distinguish whether the PPDU is sent to a WUR STA or an AMP STA.

[0091] For example, take the format of the type field shown in Table 1 as an example. If the current PPDU is a WUR PPDU, which is used to send a beacon frame to a WUR STA, then in the MAC header of the PPDU, the frame body presence field will indicate that there is no frame body field, and the type field will indicate the first value 0. At this time, when the WUR STA receives the PPDU, it can be known that the PPDU is sent to the WUR STA, and the WUR STA parses the PPDU to obtain the WUR beacon frame.

[0092] In some embodiments, for an AMP STA, if the PPDU is intended to indicate a beacon frame for the AMP STA, its body field should be in the first state, indicating the presence of the body field. If the AMP STA receives a PPDU whose body field indicates the second state, indicating the absence of the body field, the AMP STA determines that the PPDU is not intended for the AMP STA and, therefore, discards the PPDU and does not parse the beacon frame it carries.

[0093] 2. The type field indicates the second value

[0094] In some embodiments, if the type field indicates a second value, the AMP STA parses the beacon frame, and the second value is used to indicate that the PPDU carries an AMP beacon frame.

[0095] Correspondingly, if the beacon frame is sent to the first STA, the AP indicates a second value in the type field, and the second value is used to indicate that the PPDU carries an AMP beacon frame.

[0096] In some embodiments, if the frame body presence field indicates the first state and the type field indicates the third value, the AMP STA discards the beacon frame.

[0097] Correspondingly, if the beacon frame is sent to the second STA, the AP indicates the first state in the frame body field, and the type field indicates the third value.

[0098] In some embodiments, the third value refers to a value other than the first value and the second value.

[0099] In some embodiments, there is a reserved bit in the type field of the WUR PPDU, and the value corresponding to the reserved bit does not indicate the type of WUR corresponding to the PPDU.

[0100] In some embodiments, if a WUR STA receives a PPDU whose Type field indicates the value corresponding to the reserved bit, the WUR STA will consider the PPDU to be erroneous and discard it. Therefore, the reserved bit in the Type field can be used to indicate that the PPDU carries an AMP STA beacon frame.

[0101] In some embodiments, a reserved bit can be defined to indicate that the PPDU carries an AMP beacon frame. Taking the format of the Type field shown in Table 1 as an example, if any one or more of 5-7 are defined as an AMP beacon frame, then if an AMP STA receives a PPDU whose Frame Body field indicates the first state and whose Type field indicates a value corresponding to an AMP beacon frame, the AMP STA receives the PPDU and parses it to obtain a beacon frame.

[0102] In some embodiments, the reserved bit may not be defined. If the value indicated in the type field does not define its corresponding function, it is assumed that the value indicates an AMP beacon frame.

[0103] In some embodiments, in addition to the first value and the reserved bit, other defined bits in the type field will indicate other information types of the WUR STA, and the frame body presence field of the PPDU corresponding to these information types will indicate the first state. Therefore, if the AMP STA receives a PPDU, the frame body presence field of the PPDU indicates the first state, and the AMP STA cannot use the listening presence field alone to determine whether the PPDU is sent to the AMP STA. In this case, the AMP STA can assist in the determination based on the type field. If the type field of the PPDU indicates the third value and the frame body presence field indicates the first state, the AMP STA can determine that the PPDU is sent to the WUR STA, and the AMP STA discards the PPDU.

[0104] Through the above method, AMP STA and WUR STA can determine whether the PPDU is sent to AMP STA based on the content indicated by the type field and the frame body field, so that AMP STA can correctly receive AMP beacon frames and avoid WUR STA from incorrectly receiving AMP beacon frames.

[0105] Solution 2: Sample the ID field in the MAC header to distinguish WUR PPDU from AMP PPDU

[0106] In some embodiments, for a WUR, as shown in Table 2, the ID field may be used to indicate the following information:

[0107] Table 2: WUR frame IDs

[0108] In some embodiments, when the AP sends a WUR beacon, the ID field is filled with the Transmitter ID.

[0109] In some embodiments, when the AMP STA receives the AMP beacon frame sent by the AP, the ID field can be filled with the AP's ID. As long as the ID is distinguished from the Transmitter ID filled in the ID field in the WUR beacon frame, the AMP STA and the WUR STA can distinguish whether the PPDU is sent to the AMP STA or the WUR STA based on the ID filled in the ID field.

[0110] In some embodiments, if the ID field indicates the first ID, the AMP STA parses the beacon frame.

[0111] In some embodiments, if the ID field indicates the second ID, the AMP STA discards the beacon frame.

[0112] Accordingly, if the PPDU is sent to the first STA, the AP indicates the first ID in the ID field;

[0113] If the PPDU is sent to a second STA, the AP indicates the second ID in the ID field.

[0114] In some embodiments, the second ID is a Transmitter ID.

[0115] In some embodiments, the first ID may be any ID different from the Transmitter ID.

[0116] In some embodiments, the first ID may be calculated based on the second ID. This application does not limit the rules for calculating the first ID based on the second ID.

[0117] For example, the first ID may be obtained by adding 1 to the second ID.

[0118] In some embodiments, the second ID may be the ID of the AP obtained by the AMP STA during the association process with the AP. The ID may be an ID of the AP other than the Transmitter ID.

[0119] Through the above method, AMP STA and WUR STA only need to use the ID filled in the ID field to distinguish whether the PPDU is sent to WUR STA or AMP STA, so that AMP STA can correctly receive AMP beacon frames and avoid WUR STA from incorrectly receiving AMP beacon frames.

[0120] In some embodiments, Scheme 1 and Scheme 2 can also be used in combination. As long as one of Scheme 2 and Scheme 1 meets the conditions, it can be determined whether the PPDU is sent to the AMP STA or the WUR STA. For example, the frame body field of the PPDU indicates a first state, the type field indicates a first value, and the ID field indicates a first ID. If the AMP STA first parses the ID field when receiving the PPDU, it can determine that the PPDU is used to carry the AMP beacon frame through the ID field. If the AMP STA first parses the frame body field and the type field when receiving the PPDU, it can determine that the PPDU is used to carry the AMP beacon frame through both the frame body field and the type field.

[0121] The technical solution provided in the embodiment of the present application adopts a PPDU with the same frame format as the WUR PPDU to carry the AMP beacon frame, eliminating the need to design a corresponding PPDU frame format separately for the AMP STA, thereby effectively reducing the complexity of the communication system design.

[0122] The above method embodiments describe the technical solution of this application only from the perspective of interaction between an AMP STA and an AP. The aforementioned steps performed by an AMP STA can be independently implemented as an information transmission method on the AMP STA side, and the aforementioned steps performed by an AP can be independently implemented as an information transmission method on the AP side. Furthermore, the embodiments provided herein can be arbitrarily combined to form new embodiments, all of which are within the scope of protection of this application.

[0123] The following are device embodiments of the present application, which can be used to implement the method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.

[0124] Please refer to Figure 10, which shows a block diagram of an information transmission device provided by one embodiment of the present application. This device has the functions of implementing the above-mentioned example information transmission method. These functions can be implemented in hardware or by hardware executing corresponding software implementations. This device can be the AMP STA described above, or it can be provided within an AMP STA. As shown in Figure 10, the device 1000 may include a receiving module 1010.

[0125] The receiving module 1010 is used to receive a beacon frame sent by the AP, where the beacon frame is carried in a PPDU, and the PPDU has the same frame format as the WUR PPDU. The first STA is an ambient energy AMP STA.

[0126] In some embodiments, the data of the beacon frame is carried in a frame body of a MAC frame format.

[0127] In some embodiments, the MAC frame format further includes a MAC header, and the MAC header is used to carry type information of the PPDU.

[0128] In some embodiments, the MAC header includes a frame control field and an identifier ID field; wherein, the frame control field includes a type field and a frame body presence field, the type field is used to indicate the type of the PPDU, and the frame body presence field is used to indicate the status of the frame body; the ID field is used to carry the ID of the AP.

[0129] In some embodiments, the device further includes: a processing module (not shown in the figure).

[0130] The processing module is configured to parse the beacon frame if the frame body field indicates a first state and the type field indicates a first value, wherein the first value is used to indicate that the PPDU carries a WUR beacon frame; or

[0131] The processing module is configured to parse the beacon frame if the type field indicates a second value, where the second value is used to indicate that the PPDU carries an AMP beacon frame; or

[0132] The processing module is configured to discard the beacon frame if a field indicating a second state appears in the frame body; or

[0133] The processing module is configured to discard the beacon frame if the frame body appearance field indicates a first state and the type field indicates a third value.

[0134] In some embodiments, the processing module is further configured to parse the beacon frame if the ID field indicates the first ID; or

[0135] The processing module is further configured to discard the beacon frame if the ID field indicates a second ID.

[0136] The technical solution provided in the embodiment of the present application adopts a PPDU with the same frame format as the WUR PPDU to carry the AMP beacon frame, eliminating the need to design a corresponding PPDU frame format separately for the AMP STA, thereby effectively reducing the complexity of the communication system design.

[0137] Please refer to Figure 11, which shows a block diagram of an information transmission device provided by one embodiment of the present application. This device has the functions of implementing the above-mentioned example information transmission method. These functions can be implemented in hardware or by hardware executing corresponding software. This device can be the AP described above, or it can be installed in an AP. As shown in Figure 11, the device 1100 may include a receiving module 1110.

[0138] The sending module 1110 is used to send a beacon frame to the ambient energy station AMP STA, where the beacon frame is carried in a physical layer protocol data unit PPDU, and the PPDU has the same frame format as the wake-up receiver WUR PPDU.

[0139] In some embodiments, the data of the beacon frame is carried in a frame body of a media access control MAC frame format.

[0140] In some embodiments, the MAC frame format further includes a MAC header, and the MAC header is used to carry type information of the PPDU.

[0141] In some embodiments, the MAC header includes a frame control field and an identifier ID field; wherein, the frame control field includes a type field and a frame body presence field, the type field is used to indicate the type of the PPDU, and the frame body presence field is used to indicate the status of the frame body; the ID field is used to carry the ID of the AP.

[0142] In some embodiments, the device further includes: a processing module (not shown in the figure).

[0143] The processing module is configured to, if the beacon frame is sent to the first STA, cause the frame body appearance field to indicate a first state, and the type field to indicate a first value, where the first value is used to indicate that the PPDU carries a WUR beacon frame; or

[0144] The processing module is configured to, if the beacon frame is sent to the first STA, indicate a second value in the type field, where the second value is used to indicate that the PPDU carries an AMP beacon frame; or

[0145] The processing module is configured to, if the beacon frame is sent to a second STA, cause the frame body to have a field indicating a second state; or

[0146] The processing module is configured to, if the beacon frame is sent to the second STA, cause the frame body occurrence field to indicate a first state, and the type field to indicate a third value.

[0147] In some embodiments, the processing module is further configured to: if the beacon frame is sent to the first STA, then the ID field indicates the first ID; or

[0148] The processing module is further configured to: if the beacon frame is sent to a second STA, then the ID field indicates a second ID.

[0149] The technical solution provided in the embodiment of the present application uses a PPDU with the same frame format as the WUR PPDU to send AMP beacon frames, without the need to design a corresponding PPDU frame format separately for the AMP STA, which can effectively reduce the complexity of the communication system design.

[0150] It should be noted that the device provided in the above embodiment only uses the division of the above-mentioned functional modules as an example to implement its functions. In actual applications, the above-mentioned functions can be assigned to different functional modules according to actual needs, that is, the content structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0151] Regarding the apparatus in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0152] Please refer to Figure 12, which shows a schematic diagram of the structure of an AMP STA provided in one embodiment of the present application. AMP STA 1200 may include a processor 1201, a transceiver 1202, and a memory 1203. The transceiver 1202 is used to implement transmission or reception functions, such as the functions of the aforementioned receiving module 1010. The processor 1201 may be used to implement other processing functions or control transmission and / or reception, such as the functions of the aforementioned processing module.

[0153] The processor 1201 includes one or more processing cores. The processor 1201 executes various functional applications and information processing by running software programs and modules.

[0154] The transceiver 1202 may include a receiver and a transmitter. For example, the receiver and the transmitter may be implemented as the same wireless communication component, which may include a wireless communication chip and a radio frequency antenna.

[0155] The memory 1203 may be connected to the processor 1201 and the transceiver 1202 .

[0156] The memory 1203 may be used to store a computer program executed by the processor, and the processor 1201 is used to execute the computer program to implement each step in the above method embodiment.

[0157] In some embodiments, the transceiver 1202 is configured to receive a beacon frame sent by an access point AP, where the beacon frame is carried in a physical layer protocol data unit PPDU, and the PPDU has the same frame format as a wake-up receiver WUR PPDU.

[0158] For details not described in detail in this embodiment, please refer to the above embodiments and will not be described in detail here.

[0159] In addition, the memory can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic or optical disks, electrically erasable programmable read-only memory, erasable programmable read-only memory, static access memory, read-only memory, magnetic memory, flash memory, and programmable read-only memory.

[0160] Please refer to Figure 13, which shows a schematic diagram of the structure of an AP provided in one embodiment of the present application. The AP 1300 may include: a processor 1301, a transceiver 1302, and a memory 1303. The processor 1301 is used to implement the functions of the above-mentioned processing module, and the transceiver 1302 is used to implement the functions of the above-mentioned sending module 1110.

[0161] The processor 1301 includes one or more processing cores, and executes various functional applications and information processing by running software programs and modules. The processor 1301 is used to execute other steps except the sending and receiving steps executed by the AMP STA in the above method embodiment.

[0162] Transceiver 1302 may include a receiver and a transmitter. For example, the receiver and transmitter may be implemented as a single wireless communication component, which may include a wireless communication chip and a radio frequency antenna. Transceiver 1302 is configured to perform the sending and / or receiving steps performed by the AMP STA in the above method embodiment.

[0163] The memory 1303 may be connected to the processor 1301 and the transceiver 1302 .

[0164] The memory 1303 may be used to store a computer program executed by the processor, and the processor 1301 is used to execute the computer program to implement each step in the above method embodiment.

[0165] In addition, the memory can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic or optical disks, electrically erasable programmable read-only memory, erasable programmable read-only memory, static access memory, read-only memory, magnetic memory, flash memory, and programmable read-only memory.

[0166] In some embodiments, the transceiver 1302 is configured to send a beacon frame to an ambient energy station AMP STA, where the beacon frame is carried in a physical layer protocol data unit PPDU, and the PPDU has the same frame format as a wake-up receiver WUR PPDU.

[0167] For details not described in detail in this embodiment, please refer to the above embodiments and will not be described in detail here.

[0168] An embodiment of the present application also provides a computer-readable storage medium, in which a computer program is stored, and the computer program is used to be executed by a processor to implement the above-mentioned information transmission method on the AMP STA side, or to implement the above-mentioned information transmission method on the AP side. Optionally, the computer-readable storage medium may include: ROM (Read-Only Memory), RAM (Random-Access Memory), SSD (Solid State Drives) or an optical disk, etc. Among them, the random access memory may include ReRAM (Resistance Random Access Memory) and DRAM (Dynamic Random Access Memory).

[0169] An embodiment of the present application further provides a chip, which includes a programmable logic circuit and / or program instructions. When the chip is running, it is used to implement the above-mentioned information transmission method on the AMP STA side, or to implement the above-mentioned information transmission method on the AP side.

[0170] An embodiment of the present application also provides a computer program product, which includes a computer program stored in a computer-readable storage medium. A processor reads and executes the computer program from the computer-readable storage medium to implement the above-mentioned information transmission method on the AMP STA side, or to implement the above-mentioned information transmission method on the AP side.

[0171] It should be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B.

[0172] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and being indicated, configuration and being configured, etc.

[0173] In some embodiments of the present application, "predefined" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., including an AMP, STA, or AP). This application does not limit the specific implementation method. For example, predefined may refer to those defined in a protocol.

[0174] In some embodiments of the present application, the "protocol" may refer to a standard protocol in the field of communications, for example, it may include an LTE protocol, a NR protocol, and related protocols used in future communication systems, and this application does not limit this.

[0175] In this document, "plurality" refers to two or more. "And / or" describes a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. The character " / " generally indicates an "or" relationship between the associated objects.

[0176] The term “greater than or equal to” mentioned herein may mean greater than or equal to, or greater than, and the term “less than or equal to” may mean less than or equal to, or less than.

[0177] In addition, the step numbers described in this document only illustrate a possible execution order between the steps. In some other embodiments, the above steps may not be executed in the order of the numbers, such as two steps with different numbers are executed at the same time, or two steps with different numbers are executed in the opposite order of the diagram. The embodiments of the present application are not limited to this.

[0178] Those skilled in the art will appreciate that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any media that facilitates the transmission of computer programs from one place to another. The storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0179] The above description is merely an exemplary embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. An information transmission method, characterized in that: The method is performed by an ambient energy station AMP STA, and the method includes: A beacon frame sent by an access point AP is received, where the beacon frame is carried in a physical layer protocol data unit PPDU, and the PPDU has the same frame format as the wake-up receiver WUR PPDU.

2. The method according to claim 1, characterized in that The data of the beacon frame is carried in a frame body of a media access control MAC frame format.

3. The method according to claim 2, characterized in that The MAC frame format also includes a MAC header, and the MAC header is used to carry type information of the PPDU.

4. The method according to claim 3, characterized in that The MAC header includes a frame control field and an identifier ID field; wherein the frame control field includes a type field and a frame body appearance field, the type field is used to indicate the type of the PPDU, and the frame body appearance field is used to indicate the status of the frame body; the ID field is used to carry the ID of the AP.

5. The method according to claim 4, characterized in that The method further comprises: If the frame body appears in a field indicating a first state and the type field indicates a first value, the beacon frame is parsed, and the first value is used to indicate that the PPDU carries a WUR beacon frame; or, If the type field indicates a second value, the beacon frame is parsed, and the second value is used to indicate that the PPDU carries an AMP beacon frame; or, If the frame body contains a field indicating the second state, discard the beacon frame; or, If the frame body presence field indicates the first state and the type field indicates the third value, the beacon frame is discarded.

6. The method according to claim 4 or 5, characterized in that: The method further comprises: If the ID field indicates the first ID, parsing the beacon frame; or, If the ID field indicates the second ID, the beacon frame is discarded.

7. An information transmission method, characterized in that: The method is performed by an access point AP, and the method includes: A beacon frame is sent to the ambient energy station AMP STA, wherein the beacon frame is carried in a physical layer protocol data unit PPDU, and the PPDU has the same frame format as the wake-up receiver WUR PPDU.

8. The method according to claim 7, characterized in that The data of the beacon frame is carried in a frame body of a media access control MAC frame format.

9. The method according to claim 8, characterized in that The MAC frame format also includes a MAC header, and the MAC header is used to carry type information of the PPDU.

10. The method according to claim 9, characterized in that The MAC header includes a frame control field and an identifier ID field; wherein the frame control field includes a type field and a frame body appearance field, the type field is used to indicate the type of the PPDU, and the frame body appearance field is used to indicate the status of the frame body; the ID field is used to carry the ID of the AP.

11. The method according to claim 10, characterized in that The method further comprises: If the beacon frame is sent to the first STA, the frame body appearance field indicates a first state, and the type field indicates a first value, where the first value is used to indicate that the PPDU carries a WUR beacon frame; or, If the beacon frame is sent to the first STA, the type field indicates a second value, and the second value is used to indicate that the PPDU carries an AMP beacon frame; or, If the beacon frame is sent to a second STA, the frame body field indicates a second state; or, If the beacon frame is sent to a second STA, the frame body occurrence field indicates a first state, and the type field indicates a third value.

12. The method according to claim 10 or 11, characterized in that: The method further comprises: If the beacon frame is sent to the first STA, the ID field indicates the first ID; or, If the beacon frame is sent to a second STA, the ID field indicates a second ID.

13. An information transmission device, characterized in that: The device comprises: The receiving module is used to receive a beacon frame sent by an access point AP, wherein the beacon frame is carried in a physical layer protocol data unit PPDU, and the PPDU has the same frame format as the wake-up receiver WUR PPDU.

14. The device according to claim 13, characterized in that The data of the beacon frame is carried in a frame body of a media access control MAC frame format.

15. The device according to claim 14, characterized in that The MAC frame format also includes a MAC header, and the MAC header is used to carry type information of the PPDU.

16. The device according to claim 15, characterized in that The MAC header includes a frame control field and an identifier ID field; wherein the frame control field includes a type field and a frame body appearance field, the type field is used to indicate the type of the PPDU, and the frame body appearance field is used to indicate the status of the frame body; the ID field is used to carry the ID of the AP.

17. The device according to claim 16, characterized in that The device also includes: A processing module, configured to parse the beacon frame if the frame body appears to indicate a first state and the type field indicates a first value, wherein the first value is used to indicate that the PPDU carries a WUR beacon frame; or, a processing module, configured to parse the beacon frame if the type field indicates a second value, wherein the second value is used to indicate that the PPDU carries an AMP beacon frame; or, A processing module, configured to discard the beacon frame if a field indicating a second state appears in the frame body; or, The processing module is configured to discard the beacon frame if the field in the frame body indicates a first state and the type field indicates a third value.

18. The device according to claim 16 or 17, characterized in that The device also includes: A processing module, configured to parse the beacon frame if the ID field indicates a first ID; or, The processing module is configured to discard the beacon frame if the ID field indicates the second ID.

19. An information transmission device, characterized in that: The device comprises: The sending module is used to send a beacon frame to the ambient energy station AMP STA, and the beacon frame is carried in a physical layer protocol data unit PPDU, and the PPDU has the same frame format as the wake-up receiver WUR PPDU.

20. The device according to claim 19, characterized in that The data of the beacon frame is carried in a frame body of a media access control MAC frame format.

21. The device according to claim 20, characterized in that The MAC frame format also includes a MAC header, and the MAC header is used to carry type information of the PPDU.

22. The device according to claim 21, characterized in that The MAC header includes a frame control field and an identifier ID field; wherein the frame control field includes a type field and a frame body appearance field, the type field is used to indicate the type of the PPDU, and the frame body appearance field is used to indicate the status of the frame body; the ID field is used to carry the ID of the AP.

23. The device according to claim 22, characterized in that The device also includes: A processing module, configured to, if the beacon frame is sent to the first STA, indicate a first state in the frame body appearance field, and indicate a first value in the type field, where the first value is used to indicate that the PPDU carries a WUR beacon frame; or, a processing module, configured to, if the beacon frame is sent to the first STA, then the type field indicates a second value, where the second value is used to indicate that the PPDU carries an AMP beacon frame; or, A processing module, configured to, if the beacon frame is sent to a second STA, cause the frame body to have a field indicating a second state; or, A processing module is used for, if the beacon frame is sent to a second STA, the frame body appearance field indicates a first state, and the type field indicates a third value.

24. The device according to claim 22 or 23, characterized in that The device also includes: a processing module, configured to, if the beacon frame is sent to the first STA, then the ID field indicates a first ID; or, The processing module is used for, if the beacon frame is sent to the second STA, the ID field indicates the second ID.

25. A communication device, characterized in that: The communication device comprises a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program to implement the method according to any one of claims 1 to 6, or implements the method according to any one of claims 7 to 12.

26. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and the computer program is used to be executed by a processor to implement the method according to any one of claims 1 to 6, or to implement the method according to any one of claims 7 to 12.

27. A chip, characterized in that: The chip includes a programmable logic circuit and / or program instructions, and when the chip is running, it is used to implement the method according to any one of claims 1 to 6, or to implement the method according to any one of claims 7 to 12.

28. A computer program product, characterized in that The computer program product includes computer instructions, which are stored in a computer-readable storage medium. A processor reads and executes the computer instructions from the computer-readable storage medium to implement the method according to any one of claims 1 to 6, or to implement the method according to any one of claims 7 to 12.

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