WO2024099259A1 - 数据传输方法、装置以及设备 - Google Patents

数据传输方法、装置以及设备 Download PDF

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Publication number
WO2024099259A1
WO2024099259A1 PCT/CN2023/129898 CN2023129898W WO2024099259A1 WO 2024099259 A1 WO2024099259 A1 WO 2024099259A1 CN 2023129898 W CN2023129898 W CN 2023129898W WO 2024099259 A1 WO2024099259 A1 WO 2024099259A1
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Prior art keywords
data
sub
ppdu
parts
mcs
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English (en)
French (fr)
Inventor
顾祥新
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Spreadtrum Communications Shanghai Co Ltd
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Spreadtrum Communications Shanghai Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0025—Transmission of mode-switching indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals

Definitions

  • the present application relates to the field of communications, and in particular to a data transmission method, apparatus and device.
  • EHT Extremely High Throughput
  • the present application provides a data transmission method, apparatus and device to ensure reliable transmission of high-reliability and low-latency data, reduce the risk of data transmission failure, and reduce resource consumption.
  • an embodiment of the present application provides a data transmission method, including:
  • a physical layer protocol data unit PPDU is sent; the data part of the PPDU includes at least two sub-parts; and each sub-part corresponds to a different modulation and coding strategy MCS.
  • the PPDU includes indication information; the indication information is used to indicate the time domain length corresponding to each of the sub-parts, the MCS corresponding to each of the sub-parts, and the physical layer filling information corresponding to each of the sub-parts.
  • the data portion of the PPDU includes data portions corresponding to at least two users;
  • the data part of each user includes at least two sub-parts; the MCS corresponding to each sub-part of each user is different.
  • the PPDU includes indication information; the indication information is used to indicate the time domain length of each sub-part corresponding to each user, the MCS of each sub-part corresponding to each user, and the physical layer filling information of each sub-part corresponding to each user.
  • the indication information is located in the physical layer preamble information of the PPDU.
  • the indication information is located in a universal signaling field U-SIG or an extremely high throughput signaling field EHT-SIG or other functional signaling fields.
  • the PPDU is a trigger frame-based PPDU
  • the trigger frame is used to indicate the time domain length corresponding to each sub-part in the PPDU, the MCS corresponding to each sub-part, and the physical layer filling information corresponding to each sub-part.
  • the trigger frame is a basic trigger frame
  • the public information subdomain or user information subdomain related to the trigger type within the basic trigger frame includes the time domain length corresponding to each of the sub-parts, the MCS corresponding to each of the sub-parts, and the physical layer filling information corresponding to each of the sub-parts.
  • the data portion includes two sub-portions, respectively used to transmit first data and second data; the first data is first priority data or first reliability data; the second data is second priority data or second reliability data.
  • an embodiment of the present application provides another data transmission method, including:
  • the PPDU is decoded according to the MCS.
  • an embodiment of the present application provides a data transmission device, including:
  • the sending module sends a physical layer protocol data unit PPDU; the data part of the PPDU includes at least two sub-parts; and the modulation and coding strategy MCS corresponding to each sub-part is different.
  • the PPDU includes indication information; the indication information is used to indicate the time domain length corresponding to each of the sub-parts, the MCS corresponding to each of the sub-parts, and the physical layer filling information corresponding to each of the sub-parts.
  • the data portion of the PPDU includes data portions corresponding to at least two users; the data portion of each user includes at least two sub-portions; and the MCS corresponding to each sub-portion of each user is different.
  • the PPDU includes indication information; the indication information is used to indicate the time domain length of each sub-part corresponding to each user, the MCS of each sub-part corresponding to each user, and the physical layer filling information of each sub-part corresponding to each user.
  • the indication information is located in the physical layer preamble information of the PPDU.
  • the indication information is located in a universal signaling field U-SIG or an extremely high throughput signaling field EHT-SIG or other functional signaling fields.
  • the PPDU is a trigger frame-based PPDU
  • the trigger frame is used to indicate the time domain length corresponding to each sub-part in the PPDU, the MCS corresponding to each sub-part, and the physical layer filling information corresponding to each sub-part.
  • the trigger frame is a basic trigger frame
  • the public information subdomain or user information subdomain related to the trigger type within the basic trigger frame includes the time domain length corresponding to each of the sub-parts, the MCS corresponding to each of the sub-parts, and the physical layer filling information corresponding to each of the sub-parts.
  • the data portion includes two sub-portions, respectively used to transmit first data and second data; the first data is first priority data or first reliability data; the second data is second priority data or second reliability data.
  • an embodiment of the present application provides another data transmission device, including:
  • a receiving module configured to receive a physical layer protocol data unit PPDU; the data portion of the PPDU includes at least two sub-portions; each sub-portion corresponds to a different modulation and coding strategy MCS;
  • a decoding module is used to decode the PPDU according to the MCS.
  • an embodiment of the present application provides a data transmission device, including: a processor and a memory;
  • the memory stores computer-executable instructions
  • the processor executes the computer-executable instructions stored in the memory to implement the method as described in any one of the first aspect or the second aspect.
  • an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, which, when executed, are used to implement the method described in either the first aspect or the second aspect.
  • an embodiment of the present application provides a computer program product, including a computer program, which implements the method described in any one of the first aspect or the second aspect when executed.
  • an embodiment of the present application provides a chip having a computer program stored thereon, and when the computer program is executed by the chip, the method as described in any one of the first aspect or the second aspect is implemented.
  • an embodiment of the present application provides a chip module, on which a computer program is stored.
  • the computer program is executed by the chip module, the method described in any one of the first aspect or the second aspect is implemented.
  • the transmitting end sends a physical layer protocol data unit PPDU;
  • the data part of the PPDU includes at least two sub-parts; each sub-part corresponds to a modulation coding strategy MCS
  • MCS modulation coding strategy
  • FIG1 is a schematic diagram of an application scenario provided by an embodiment of the present application.
  • FIG2 is a schematic diagram of a flow chart of a data transmission method provided in an embodiment of the present application.
  • FIG3 is a frame structure of a PPDU
  • FIG4 is a frame structure of a PPDU provided in an embodiment of the present application.
  • FIG5 is a frame structure of a PPDU provided in an embodiment of the present application.
  • FIG6 is a format of a trigger frame
  • FIG7 is a format of a user information area
  • FIG8 is a schematic diagram of a flow chart of another data transmission method provided in an embodiment of the present application.
  • FIG9 is a schematic diagram of the structure of a data transmission device provided in an embodiment of the present application.
  • FIG10 is a schematic diagram of the structure of another data transmission device provided in an embodiment of the present application.
  • FIG. 11 is a schematic diagram of the structure of a data transmission device provided in an embodiment of the present application.
  • FIG1 is a schematic diagram of an application scenario provided by an embodiment of the present application. Referring to FIG1 , it includes an access point (AP) type station and one or more non-AP type stations (none access point stations, non-AP STA). For ease of description, in the embodiment of the present application, the access point type station is referred to as an access point AP, and the non-access point type station is referred to as a station STA.
  • FIG1 includes an access point AP and two stations STA1 and STA2.
  • the access point AP can be the access point for terminal devices (such as mobile phones) to enter the wired (or wireless) network. It is to be deployed in homes, buildings and parks, with a typical coverage radius of tens to hundreds of meters. Of course, it can also be deployed outdoors.
  • the access point is equivalent to a bridge connecting the wired network and the wireless network. Its main function is to connect various wireless network clients together and then connect the wireless network to the Ethernet.
  • the access point can be a terminal device (such as a mobile phone) or a network device (such as a router) with a wireless fidelity (Wireless Fidelity, WiFi) chip.
  • the access point can be a device that supports the 802.11be standard.
  • the access point can also be a device that supports a variety of wireless local area networks (Wireless Local Area Networks, WLAN) standards of the 802.11 family, such as 802.11be, 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b and 802.11a.
  • the access point in this application can be a high-efficiency (High Efficient, HE) AP or an extremely high throughput (Extremely High Throughput, EHT) AP, or an access point applicable to a future generation of WiFi standards.
  • HE High Efficient
  • EHT extremely High Throughput
  • the site STA can be a wireless communication chip, wireless sensor or wireless communication terminal, etc., and can also be called a user.
  • the site STA can support WiFi communication functions, and can be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with wireless transceiver function (such as a laptop, PDA, etc.), a mobile Internet device (Mobile Internet Device, MID), a virtual reality (Virtual Reality, VR) device, an augmented reality (Augmented Reality, AR) device, a wireless terminal in industrial control (Industrial Control), a wireless terminal in self-driving (Self Driving), a wireless terminal in remote medical (Remote Medical), a smart phone, etc.
  • Wireless terminals in Smart Grid wireless terminals in Transportation Safety, wireless terminals in Smart City, wireless terminals in Smart Home, cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistant (PDA), handheld devices, computing devices or other processing devices, vehicle-mounted devices, smart wearable devices, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the station STA can be a device that supports the 802.11be standard.
  • the station STA can also be a device that supports multiple wireless LAN standards of the 802.11 family, such as 802.11be, 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b and 802.11a.
  • the station STA in this application can be a high-efficiency HE STA or an extremely high-throughput EHT STA, or a station applicable to a future generation of WiFi standards.
  • the access point AP and the station STA can also be devices used in the Internet of Vehicles, IoT nodes and sensors in the Internet of Things (IoT), smart cameras, smart remote controls, smart water meters and electricity meters in smart homes, and sensors in smart cities, etc.
  • IoT Internet of Things
  • smart cameras smart remote controls
  • smart water meters and electricity meters in smart homes smart homes
  • sensors in smart cities etc.
  • the embodiments of the present application do not limit the specific types of access points and stations.
  • IEEE802.11be One of the goals of IEEE802.11be (EHT) is to support low-latency data transmission.
  • IEEE802.11UHR SG is discussing the support of low-latency high-reliability communication. Compared with other data, low-latency high-reliability business data has higher requirements for quality of service (QoS).
  • QoS quality of service
  • one way is to improve transmission reliability and reduce transmission delay by repeated transmission on multiple links, but this method consumes a lot of resources, and repeated data is transmitted independently on each link, which loses the benefits of physical layer signal processing methods such as channel coding.
  • Another way is to use a relatively low-order modulation and coding scheme (MCS) to improve reliability and reduce transmission delay (caused by retransmission), but it cannot meet the requirements of transmitting high-reliability and low-latency data and ordinary data at the same time.
  • MCS modulation and coding scheme
  • the transmitting end sends a physical layer protocol data unit PPDU; the data part of the PPDU includes at least two sub-parts; each sub-part corresponds to a different modulation coding strategy MCS.
  • MCS modulation coding strategy
  • FIG2 is a flow chart of a data transmission method provided in an embodiment of the present application.
  • the data transmission method may include:
  • the sending end of data transmission can be a site or an access point; similarly, the receiving end of data transmission can be a site or an access point, which is not limited in the embodiments of the present application.
  • the WiFi protocol includes the Media Access Control (MAC) layer and the Physical (PHY) layer.
  • the MAC layer service data unit (MSDU) is the most primitive data information to be sent.
  • the MAC layer protocol data unit (MPDU) is the data information to be sent after the MSDU is packaged according to a certain frame structure.
  • the physical layer service data unit (PSDU) refers to the MPDU information transmitted from the MAC layer.
  • the physical layer protocol data unit (PPDU) can refer to the physical layer protocol data unit, and specifically can be a data packet after the PSDU is encapsulated according to a specific frame format. In some cases, in order to improve the transmission efficiency of small packets, aggregation operations can be performed to obtain aggregate MSDU (A-MSDU) and aggregate MPDU (A-MPDU).
  • the data part (Data) of the physical layer protocol data unit PPDU is divided into at least two sub-parts, and the modulation and coding strategy MCS corresponding to each sub-part is different, which can be used to send data of different data types.
  • the sending end can set different MCSs according to different types of data.
  • the data part in the embodiment of the present application may include two sub-parts, which are used to transmit the first data and the second data respectively; wherein the first data may include high-priority data requiring high reliability and low latency, and the transmitting end may select a high-reliability MCS to transmit the first data to reduce the risk of data transmission failure, improve data transmission reliability, and reduce latency; the second data may be low-priority ordinary data, and the transmitting end may select a lower MCS to transmit the second data to ensure throughput.
  • the transmitting end can achieve reliable transmission of low-latency, high-reliability data and ordinary data on one PPDU while reducing resource consumption.
  • the data part of the PPDU can be specifically two parts, three parts, four parts or more parts, and different MCSs are set corresponding to each part. This can meet various types of data transmission and further improve the flexibility of data transmission.
  • the transmitting end sends a physical layer protocol data unit PPDU; the data part of the PPDU includes at least two sub-parts; the modulation coding strategy MCS corresponding to each sub-part is different.
  • MCS modulation coding strategy
  • the PPDU includes indication information; the indication information is used to indicate the time domain length corresponding to each sub-part, the MCS corresponding to each sub-part, and the physical layer filling information corresponding to each sub-part.
  • the time domain length may refer to the time domain length of the data portion corresponding to the first data or the second data, for example, 55 symbols or other ways of expressing the length, such as the length defined by the LENGTH subfield in the L-SIG field.
  • the physical layer padding information may refer to the padding information corresponding to each sub-part, such as Pre-FEC Padding Factor.
  • the indication information can be specifically used to indicate the time domain length, MCS and physical filling information corresponding to each sub-part, so that the transmitter can notify the receiver of the data distribution in the PPDU through the indication information to ensure the accuracy and reliability of data transmission.
  • the data part of the PPDU includes data parts corresponding to at least two users; the data part of each user includes at least two sub-parts; and the MCS corresponding to each sub-part of each user is different.
  • PPDU may include Signal-User PPDU (SU PPDU), Multi-user PPDU (MU PPDU), and Trigger Based PPDU (TB PPDU).
  • SU PPDU Signal-User PPDU
  • MU PPDU Multi-user PPDU
  • TB PPDU Trigger Based PPDU
  • the data portion may be a data portion corresponding to one user; and in a multi-user MU PPDU, the data portion may be a data portion corresponding to at least two users.
  • the data part of each user can be independently divided into at least two parts on the resource unit (RU) corresponding to the user, and each part can correspond to a different MCS.
  • the data part corresponding to the first user can be divided into two sub-parts, and the MCS of each sub-part is different; the data part corresponding to the second user can be divided into two sub-parts, and the MCS of each sub-part is different.
  • the data part of each user can be divided and different types of data can be transmitted with different MCSs, which can improve the reliability of data transmission.
  • the PPDU includes indication information; the indication information is used to indicate the time domain length of each sub-part corresponding to each user, the MCS of each sub-part corresponding to each user, and the physical layer filling information of each sub-part corresponding to each user.
  • the indication information in the PPDU can be used to indicate the time domain length, MCS and physical layer filling information of each sub-part corresponding to each user.
  • the transmitting end can notify the receiving end of the data distribution in the PPDU through the indication information to ensure the accuracy and reliability of data transmission.
  • the indication information is located in the physical layer preamble information of the PPDU.
  • the indication information is located in a universal signaling field U-SIG or an extremely high throughput signaling field EHT-SIG or other functional signaling fields.
  • the indication information may be included in the physical layer preamble information (PHY preamble) of the PPDU, and may be specifically located in the universal signaling field (Universal Signal field, U-SIG) or the extremely high throughput signaling field EHT-SIG (EHT Signal) or other functional signaling fields.
  • the transmitting end notifies the receiving end of the indication information through the physical layer preamble so that the receiving end can accurately decode the PPDU.
  • the indication information may also be included in other physical preamble information, and the specific preamble field may also be represented by other names, such as UHR-SIG, etc., which is not limited in the embodiment of the present application.
  • FIG3 shows a frame structure of a PPDU.
  • FIG3 shows the frame structure of an extremely high throughput signaling multi-user PPDU (EHT Multi-user PPDU, EHT MU PPDU).
  • the frame structure includes multiple physical layer preambles, a data portion, and an extended field PE.
  • FIG3 (b) shows the specific description and function of each field.
  • This frame structure is a frame structure of an existing WiFi protocol, and the embodiments of the present application will not be described in detail here.
  • FIG4 is a frame structure of a single-user SU PPDU provided in an embodiment of the present application.
  • the data part Data of the physical layer protocol unit PPDU in the embodiment of the present application, it is divided into two sub-parts A and B in the time domain.
  • Sub-part A can be used to transmit the first data A-MPDU1
  • sub-part B can be used to transmit the second data A-MPDU2.
  • the two sub-parts A and B use different MCSs.
  • the whole composed of A-MPDU1 and A-MPDU2 can be called an aggregate physical layer service data unit (Aggregate PHY Service Data Unit, A-PSDU).
  • A-PSDU aggregate physical layer service data unit
  • A-PSDU aggregate PHY Service Data Unit
  • time domain lengths of the two sub-parts A and B can be the same or different, and can be divided based on actual needs; sub-part A may not require physical layer filling information, and can be configured based on actual needs, and the embodiment of the present application does not limit this.
  • the transmitter can aggregate data with high service quality requirements in A-MPDU1, such as MPDUs of delay-sensitive data and MPDUs of high-reliability data, and can aggregate ordinary data in A-MPDU2.
  • A-MPDU1 such as MPDUs of delay-sensitive data and MPDUs of high-reliability data
  • A-MPDU2 such as MPDUs of delay-sensitive data and MPDUs of high-reliability data
  • A-MPDU2 can aggregate ordinary data in A-MPDU2.
  • the transmitter can transmit high-reliability, low-latency data and ordinary data based on different MCSs in one PPDU, and provide low-latency, high-reliability MPDUs with higher reliability transmission in the same PPDU.
  • FIG5 is a frame structure of a multi-user MU PPDU provided in an embodiment of the present application.
  • the data part in the MU PPDU is divided into two resource units RU, including data parts corresponding to two users, corresponding to the first user (User1) and the first user (User1) respectively.
  • the data part corresponding to the first user can be divided into two sub-parts A and B to obtain User1-A and User1-B, and the MCS of each sub-part is different, which can be used to transmit the first data and the second data respectively; at the same time, the data part corresponding to the second user is divided into two sub-parts A and B to obtain User2-A and User2-B, and the MCS of each sub-part is different, which can be used to transmit the third data and the fourth data respectively.
  • time domain length and MCS and other information specifically divided by the first user and the second user may be the same or different.
  • time domain length and MCS corresponding to the first data and the third data may be the same or different. This embodiment of the present application does not limit this.
  • the data portion corresponding to each user includes two sub-portions.
  • the data portion of each user may also include 3 or more sub-portions, and the number of sub-portions included between different users may also be different.
  • the first user may include 3 sub-portions
  • the second user may include 4 sub-portions.
  • the specific configuration can be flexibly performed based on actual needs, and the embodiments of the present application are not limited to this.
  • the PPDU is a trigger frame-based PPDU
  • the trigger frame is used to indicate the time domain length corresponding to each sub-part in the PPDU, the MCS corresponding to each sub-part, and the physical layer filling information corresponding to each sub-part.
  • the trigger frame is a basic trigger frame
  • the public information subfield or user information subfield related to the trigger type in the basic trigger frame includes the time domain length corresponding to each subpart, the MCS corresponding to each subpart, and the physical layer filling information corresponding to each subpart.
  • the time domain length, MCS and physical filling information corresponding to each sub-part may be indicated by a trigger frame (Trigger frame), and may be specifically located in a public information subfield related to the trigger type or a user information subfield (trigger dependent User Info subfield) in a basic trigger frame (Basic trigger frame).
  • Trigger frame Trigger frame
  • Base trigger frame a trigger frame
  • FIG6 shows a trigger frame format.
  • the trigger frame includes a common information subfield (Common Info) and a user information list (User Info List).
  • the user information list includes one or more user information areas.
  • the time domain length, MCS and physical filling information corresponding to each sub-part may be located in the public information sub-domain.
  • a format of a user information area is shown in Fig. 7.
  • a user information subfield related to the trigger type is included, and the time domain length, MCS and physical filling information corresponding to each subpart may also be located in the user information subfield related to the trigger type.
  • the data portion includes two sub-portions, which are respectively used to transmit first data and second data; the first data is first priority data or first reliability data; and the second data is second priority data or second reliability data.
  • the data portion may include two sub-portions, which are respectively used to transmit the first data and the second data.
  • the first data and the second data can be distinguished by priority.
  • the first data is the first priority and can be high priority data; the second data is the second priority and can be low priority data.
  • the first data and the second data can also be distinguished by reliability.
  • the first data is the first reliability and can be high reliability data; the second data is the second reliability and can be low reliability data.
  • the data portion may also include more sub-portions, corresponding to more data of different priorities or different reliabilities, and different data may also be distinguished in other ways, which is not limited in the embodiment of the present application.
  • Example 1 SU PPDU data transmission process
  • the MAC layer of the station STA receives the data to be sent from the upper layer, of which the high-reliability and low-latency data is encapsulated in MPDU1-4, and the ordinary data is encapsulated in MPDU5-15.
  • the STA seizes the 20MHz bandwidth transmission opportunity (TXOP) through Enhanced Distributed Channel Access (EDCA) and assembles the SU PPDU.
  • TXOP 20MHz bandwidth transmission opportunity
  • EDCA Enhanced Distributed Channel Access
  • the total time domain length of the data part is 2ms (125 symbols), of which the first data (corresponding to the A sub-part) occupies 0.8ms (50 symbols), the corresponding MCS is MCS3, and the pre-FEC padding factor is 1, and the second data (corresponding to the B sub-part) occupies 1.2ms (75 symbols)
  • the corresponding MCS is MCS6, and the pre-FEC padding factor is 1.
  • the first data is A-MPDU1, which aggregates MPDU1-4; the second data is A-MPDU2, which aggregates MPDU5-15.
  • the time domain lengths corresponding to the A subpart and the B subpart, as well as their respective MCS and physical layer padding information, are indicated by indication information, which is included in the U-SIG.
  • the station STA can then send the SU PPDU to ensure reliable transmission of low-latency and high-reliability data in the same PPDU, reducing the risk of data transmission failure.
  • Example 2 Data transmission process of TB PPDU
  • the MAC layer of the station STA receives the data to be sent from the upper layer, of which the high-reliability and low-latency data is encapsulated in MPDU1-4, and the ordinary data is encapsulated in MPDU5-15.
  • the station STA is triggered by the basic trigger frame to send the TB PPDU uplink.
  • the RU occupied by the TB PPDU is 242-tone (20Mhz).
  • the A subpart of the data part is specified to occupy 1ms, MCS3, and pre-FEC padding factor 1
  • the B subpart is specified to occupy 1ms, MCS6, and pre-FEC padding factor 2.
  • the station STA assembles the TB PPDU.
  • the first data A-MPDU1 transmitted in the A sub-part aggregates MPDU 1-4, and the second data A-MPDU2 transmitted in the B sub-part aggregates MPDU5-15.
  • the station STA can then send the TB PPDU to ensure reliable transmission of low-latency and high-reliability data in the same PPDU, reducing the risk of data transmission failure.
  • the MAC layer of the access point AP receives the data to be sent from the upper layer, wherein the high-reliability and low-latency data is encapsulated in MPDU1-4, and the common data is encapsulated in MPDU5-15, and sent to the target station STA.
  • the access point AP seizes the 40MHz bandwidth transmission opportunity TXOP through EDCA and assembles the MU PPDU.
  • the total time domain length of the data part is 2ms.
  • One of the 242-tone (subcarrier) RUs is sent to the target station STA.
  • the A subpart occupies 1ms, MCS3, and the pre-FEC padding factor is 1.
  • the B subpart occupies 1ms, MCS6, and the pre-FEC padding factor is 3; the first data A-MPDU1 transmitted in the A subpart aggregates MPDU1-4, and the second data A-MPDU2 transmitted in the B subpart aggregates MPDU5-15; the time domain length corresponding to the A subpart and the B subpart and their respective MCS, physical layer padding information, etc.
  • the access point AP can send the MU PPDU to ensure the reliable transmission of low-latency and high-reliability data in the same PPDU, reducing the risk of data transmission failure.
  • FIG8 is a flow chart of another data transmission method provided in an embodiment of the present application.
  • the data transmission method may include:
  • S802 Decode the PPDU according to the MCS.
  • the receiving end of the data transmission method can be a station STA or an access point AP.
  • the receiving end can receive the PPDU, and then decode the at least two sub-parts obtained by dividing the PPDU data part according to different MCSs to obtain different types of data.
  • different MCSs can be used to transmit high-reliability and low-latency data and ordinary data, which can ensure the throughput while ensuring the reliable transmission of high-reliability and low-latency data.
  • the receiving end receives a physical layer protocol data unit PPDU; the data part of the PPDU includes at least two sub-parts; each sub-part corresponds to a different modulation coding strategy MCS; and the PPDU is decoded according to the MCS.
  • MCS modulation coding strategy
  • the PPDU includes indication information; the indication information is used to indicate the time domain length corresponding to each sub-part, the MCS corresponding to each sub-part, and the physical layer filling information corresponding to each sub-part.
  • the data part of the PPDU includes data parts corresponding to at least two users; the data part of each user includes at least two sub-parts; and the MCS corresponding to each sub-part of each user is different.
  • the PPDU includes indication information; the indication information is used to indicate the time domain length of each sub-part corresponding to each user, the MCS of each sub-part corresponding to each user, and the physical layer filling information of each sub-part corresponding to each user.
  • the indication information is located in the physical layer preamble information of the PPDU.
  • the indication information is located in a universal signaling field U-SIG or an extremely high throughput signaling field EHT-SIG or other functional signaling fields.
  • the PPDU is a trigger frame-based PPDU
  • the trigger frame is used to indicate the time domain length corresponding to each sub-part in the PPDU, the MCS corresponding to each sub-part, and the physical layer filling information corresponding to each sub-part.
  • the trigger frame is a basic trigger frame
  • the public information subfield or user information subfield related to the trigger type in the basic trigger frame includes the time domain length corresponding to each subpart, the MCS corresponding to each subpart, and the physical layer filling information corresponding to each subpart.
  • the data portion includes two sub-portions, which are respectively used to transmit first data and second data; the first data is first priority data or first reliability data; and the second data is second priority data or second reliability data.
  • FIG9 is a schematic diagram of the structure of a data transmission device provided in an embodiment of the present application.
  • the data transmission device 90 may include:
  • the sending module 91 sends a physical layer protocol data unit PPDU; the data part of the PPDU includes at least two sub-parts; and the modulation and coding strategy MCS corresponding to each sub-part is different.
  • the PPDU includes indication information; the indication information is used to indicate the time domain length corresponding to each sub-part, the MCS corresponding to each sub-part, and the physical layer filling information corresponding to each sub-part.
  • the data part of the PPDU includes data parts corresponding to at least two users; the data part of each user includes at least two sub-parts; and the MCS corresponding to each sub-part of each user is different.
  • the PPDU includes indication information; the indication information is used to indicate the time domain length of each sub-part corresponding to each user, the MCS of each sub-part corresponding to each user, and each sub-part corresponding to each user. Physical layer filling information of the sub-section.
  • the indication information is located in the physical layer preamble information of the PPDU.
  • the indication information is located in a universal signaling field U-SIG or an extremely high throughput signaling field EHT-SIG or other functional signaling fields.
  • the PPDU is a trigger frame-based PPDU
  • the trigger frame is used to indicate the time domain length corresponding to each sub-part in the PPDU, the MCS corresponding to each sub-part, and the physical layer filling information corresponding to each sub-part.
  • the trigger frame is a basic trigger frame
  • the public information subfield or user information subfield related to the trigger type in the basic trigger frame includes the time domain length corresponding to each subpart, the MCS corresponding to each subpart, and the physical layer filling information corresponding to each subpart.
  • the data portion includes two sub-portions, which are respectively used to transmit first data and second data; the first data is first priority data or first reliability data; and the second data is second priority data or second reliability data.
  • the data transmission device 90 provided in the embodiment of the present application can implement the technical solution shown in the above method embodiment, and its implementation principle and beneficial effects are similar, which will not be repeated here.
  • the data transmission device 90 can be a chip, a chip module, etc., which is not limited in the embodiment of the present application.
  • FIG10 is a schematic diagram of the structure of another data transmission device provided in an embodiment of the present application.
  • the data transmission device 100 may include:
  • the receiving module 1001 is used to receive a physical layer protocol data unit PPDU; the data part of the PPDU includes at least two sub-parts; each sub-part corresponds to a different modulation and coding strategy MCS;
  • the decoding module 1002 is used to decode the PPDU according to the MCS.
  • the PPDU includes indication information; the indication information is used to indicate the time domain length corresponding to each sub-part, the MCS corresponding to each sub-part, and the physical layer filling information corresponding to each sub-part.
  • the data part of the PPDU includes data parts corresponding to at least two users; the data part of each user includes at least two sub-parts; and the MCS corresponding to each sub-part of each user is different.
  • the PPDU includes indication information; the indication information is used to indicate the time domain length of each sub-part corresponding to each user, the MCS of each sub-part corresponding to each user, and the physical layer filling information of each sub-part corresponding to each user.
  • the indication information is located in the physical layer preamble information of the PPDU.
  • the indication information is located in a universal signaling field U-SIG or an extremely high throughput signaling field EHT-SIG or other functional signaling fields.
  • the PPDU is a trigger frame-based PPDU
  • the trigger frame is used to indicate the time domain length corresponding to each sub-part in the PPDU, the MCS corresponding to each sub-part, and the physical layer filling information corresponding to each sub-part.
  • the trigger frame is a basic trigger frame
  • the public information subfield or user information subfield related to the trigger type in the basic trigger frame includes the time domain length corresponding to each subpart, the MCS corresponding to each subpart, and the physical layer filling information corresponding to each subpart.
  • the data portion includes two sub-portions, which are respectively used to transmit first data and second data; the first data is first priority data or first reliability data; and the second data is second priority data or second reliability data.
  • the data transmission device 100 provided in the embodiment of the present application can implement the technical solution shown in the above method embodiment, and its implementation principle and beneficial effects are similar, which will not be repeated here.
  • the data transmission device 100 can be a chip, a chip module, etc., which is not limited in the embodiment of the present application.
  • Fig. 11 is a schematic diagram of the structure of a data transmission device provided in an embodiment of the present application.
  • the data transmission device 110 may include: a memory 111 and a processor 112.
  • the memory 111 and the processor 112 are interconnected via a bus 113.
  • the memory 111 is used to store program instructions
  • the processor 112 is used to execute the program instructions stored in the memory to implement the data transmission method shown in the above embodiment.
  • the data transmission device shown in the embodiment of FIG11 can execute the technical solution shown in the above method embodiment, and its implementation principle and beneficial effects are similar, which will not be repeated here.
  • An embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored.
  • the computer-executable instructions are executed by a processor, they are used to implement the above-mentioned data transmission method.
  • the embodiment of the present application may also provide a computer program product, including a computer program, which, when executed by a processor, can implement the above-mentioned data transmission method.
  • An embodiment of the present application provides a chip having a computer program stored thereon.
  • the computer program is executed by the chip, the above-mentioned data transmission method is implemented.
  • An embodiment of the present application further provides a chip module having a computer program stored thereon.
  • the computer program is executed by the chip module, the above-mentioned data transmission method is implemented.
  • communication devices which may include hardware structures and software modules, and implement the above-mentioned method functions in the form of hardware structures, software modules, or hardware structures and software modules. It is implemented by adding structure and software modules.
  • processors mentioned in the embodiments of the present application may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • DSP digital signal processors
  • ASIC application-specific integrated circuits
  • FPGA field programmable gate arrays
  • a general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.
  • the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory.
  • the volatile memory may be a random access memory (RAM), which is used as an external cache.
  • RAM static RAM
  • DRAM dynamic RAM
  • SDRAM synchronous DRAM
  • DDR SDRAM double data rate SDRAM
  • ESDRAM enhanced SDRAM
  • SLDRAM synchronous link DRAM
  • DR RAM direct RAM bus RAM
  • the size of the serial numbers of the above-mentioned processes does not mean 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 the present application.
  • modules/units contained in the various devices and products described in the above embodiments they may be software modules/units, or hardware modules/units, or they may be partially software modules/units and partially hardware modules/units.
  • Each device and product may be applied to or integrated in a chip, a chip module or a terminal device.
  • each module/chip contained therein may be implemented in the form of hardware such as circuits, or at least some modules/units may be implemented in the form of software programs, which run on a processor integrated inside the chip, and the remaining modules/units may be implemented in the form of hardware such as circuits.
  • the term “including” and its variations may refer to non-limiting inclusion; the term “or” and its variations may refer to “and/or”.
  • the terms “first”, “second”, etc. are used to distinguish similar objects, and are not necessarily used to refer to the same object. Describes a specific order or sequence.
  • “multiple” means two or more.
  • “And/or” describes the association relationship of related objects, indicating that three relationships can exist. For example, A and/or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character “/" generally indicates that the related objects are in an "or” relationship.

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Abstract

本申请提供一种数据传输方法、装置以及设备，该方法包括：发送端发送物理层协议数据单元PPDU；该PPDU的数据部分包括至少两个子部分；每个子部分对应的调制编码策略MCS不同。这样，通过将PPDU的数据部分划分为两部分，分别用不同的MCS传输不同类型的数据，能够实现高可靠性低时延数据与普通数据的同时传输，在同一PPDU可以确保高可靠性低时延数据的可靠传输，降低传输失败的风险，降低资源消耗。

Description

数据传输方法、装置以及设备
本申请要求于2022年11月07日提交中国专利局、申请号为202211386196.3、申请名称为“数据传输方法、装置以及设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，尤其涉及一种数据传输方法、装置以及设备。
背景技术
电气和电子工程师协会(Institute of Electrical and Electronics Engineers，IEEE)802.11在下一代WiFi协议即极高吞吐量(Extremely High Throughput，EHT)中的主要目标之一是实现低时延数据传输。因此，在IEEE802.11be(EHT)中，针对低时延高可靠通信的讨论和研究愈发广泛和深入。
相关技术中往往是通过多链路重复传输的方式来提高传输可靠性、降低传输时延，但这种传输方式对资源消耗比较大，并且无法满足在高可靠性低时延数据和普通数据的同时传输，无法保证高可靠性低时延数据的可靠传输，数据传输失败的风险较高。
发明内容
本申请提供一种数据传输方法、装置以及设备，以保证高可靠性低时延数据的可靠传输，数据传输失败的风险较高，降低资源消耗。
第一方面，本申请实施例提供一种数据传输方法，包括：
发送物理层协议数据单元PPDU；所述PPDU的数据部分包括至少两个子部分；每个子部分对应的调制编码策略MCS不同。
在一种可能的实施方式中，所述PPDU中包括指示信息；所述指示信息用于指示每个所述子部分对应的时域长度、每个所述子部分对应的MCS以及每个所述子部分对应的物理层填充信息。
在一种可能的实施方式中，所述PPDU的数据部分包括至少两个用户对应的数据部分； 每个用户的数据部分包括至少两个子部分；每个用户中各个子部分对应的MCS不同。
在一种可能的实施方式中，所述PPDU中包括指示信息；所述指示信息用于指示每个用户对应的各个子部分的时域长度、每个用户对应的各个子部分的MCS以及每个用户对应的各个子部分的物理层填充信息。
在一种可能的实施方式中，所述指示信息位于所述PPDU的物理层前导码信息中。
在一种可能的实施方式中，所述指示信息位于通用信令字段U-SIG或极高吞吐量信令字段EHT-SIG或其他功能信令字段中。
在一种可能的实施方式中，所述PPDU为基于触发帧的PPDU，所述触发帧用于指示所述PPDU中的每个所述子部分对应的时域长度、每个所述子部分对应的MCS以及每个所述子部分对应的物理层填充信息。
在一种可能的实施方式中，所述触发帧为基本触发帧，所述基本触发帧内的与触发类型相关的公共信息子域或用户信息子域中，包括每个所述子部分对应的时域长度、每个所述子部分对应的MCS以及每个所述子部分对应的物理层填充信息。
在一种可能的实施方式中，所述数据部分包括两个子部分，分别用于传输第一数据和第二数据；所述第一数据为第一优先级数据或第一可靠性数据；所述第二数据为第二优先级数据或第二可靠性数据。
第二方面，本申请实施例提供另一种数据传输方法，包括：
接收物理层协议数据单元PPDU；所述PPDU的数据部分包括至少两个子部分；每个子部分对应的调制编码策略MCS不同；
根据所述MCS，对所述PPDU进行解码。
第三方面，本申请实施例提供一种数据传输装置，包括：
发送模块，发送物理层协议数据单元PPDU；所述PPDU的数据部分包括至少两个子部分；每个子部分对应的调制编码策略MCS不同。
在一种可能的实施方式中，所述PPDU中包括指示信息；所述指示信息用于指示每个所述子部分对应的时域长度、每个所述子部分对应的MCS以及每个所述子部分对应的物理层填充信息。
在一种可能的实施方式中，所述PPDU的数据部分包括至少两个用户对应的数据部分；每个用户的数据部分包括至少两个子部分；每个用户中各个子部分对应的MCS不同。
在一种可能的实施方式中，所述PPDU中包括指示信息；所述指示信息用于指示每个用户对应的各个子部分的时域长度、每个用户对应的各个子部分的MCS以及每个用户对应的各个子部分的物理层填充信息。
在一种可能的实施方式中，所述指示信息位于所述PPDU的物理层前导码信息中。
在一种可能的实施方式中，所述指示信息位于通用信令字段U-SIG或极高吞吐量信令字段EHT-SIG或其他功能信令字段中。
在一种可能的实施方式中，所述PPDU为基于触发帧的PPDU，所述触发帧用于指示所述PPDU中的每个所述子部分对应的时域长度、每个所述子部分对应的MCS以及每个所述子部分对应的物理层填充信息。
在一种可能的实施方式中，所述触发帧为基本触发帧，所述基本触发帧内的与触发类型相关的公共信息子域或用户信息子域中，包括每个所述子部分对应的时域长度、每个所述子部分对应的MCS以及每个所述子部分对应的物理层填充信息。
在一种可能的实施方式中，所述数据部分包括两个子部分，分别用于传输第一数据和第二数据；所述第一数据为第一优先级数据或第一可靠性数据；所述第二数据为第二优先级数据或第二可靠性数据。
第四方面，本申请实施例提供另一种数据传输装置，包括：
接收模块，用于接收物理层协议数据单元PPDU；所述PPDU的数据部分包括至少两个子部分；每个子部分对应的调制编码策略MCS不同；
解码模块，用于根据所述MCS，对所述PPDU进行解码。
第五方面，本申请实施例提供一种数据传输设备，包括：处理器、存储器；
所述存储器存储计算机执行指令；
所述处理器执行所述存储器存储的计算机执行指令，实现如第一方面或第二方面任一项所述的方法。
第六方面，本申请实施例提供一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机执行指令，当所述计算机执行指令被执行时用于实现第一方面或第二方面任一项所述的方法。
第七方面，本申请实施例提供一种计算机程序产品，包括计算机程序，所述计算机程序被执行时实现第一方面或第二方面任一项所述的方法。
第八方面，本申请实施例提供一种芯片，所述芯片上存储有计算机程序，所述计算机程序被所述芯片执行时，实现如第一方面或第二方面任一项所述的方法。
第九方面，本申请实施例提供一种芯片模组，所述芯片模组上存储有计算机程序，所述计算机程序被所述芯片模组执行时，实现如第一方面或者第二方面任一项所述的方法。
本申请实施例提供的数据传输方法、装置以及设备，发送端发送物理层协议数据单元PPDU；该PPDU的数据部分包括至少两个子部分；每个子部分对应的调制编码策略MCS 不同。这样，通过将PPDU的数据部分划分为两部分，分别用不同的MCS传输不同类型的数据，能够实现高可靠性低时延数据与普通数据的同时传输，在同一PPDU可以确保高可靠性低时延数据的可靠传输，降低传输失败的风险，降低资源消耗。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的实施例。
图1为本申请实施例提供的应用场景示意图；
图2为本申请实施例提供的一种数据传输方法的流程示意图；
图3为一种PPDU的帧结构；
图4为本申请实施例提供的一种PPDU的帧结构；
图5为本申请实施例提供的一种PPDU的帧结构；
图6为一种触发帧的格式；
图7为一种用户信息区域的格式；
图8为本申请实施例提供的另一种数据传输方法的流程示意图；
图9为本申请实施例提供的一种数据传输装置的结构示意图；
图10为本申请实施例提供的另一种数据传输装置的结构示意图；
图11为本申请实施例提供的一种数据传输设备的结构示意图。
具体实施方式
为使本领域技术人员更好地理解本申请的技术方案，下面结合附图和实施例对本申请作进一步详细描述。应当理解的是，此处描述的具体实施例和附图仅仅用于解释本申请，而并非对本申请的限定。
图1为本申请实施例提供的应用场景示意图。请参见图1，包括接入点(access point，AP)类的站点和一个或多个非接入点类的站点(none access point station，non-AP STA)。为便于描述，本申请实施例将接入点类型的站点称为接入点AP，非接入点类的站点称为站点STA。其中，图1中包括接入点AP，同时还包括两个站点STA1和STA2。
其中，接入点AP可以为终端设备(如手机)进入有线(或无线)网络的接入点，主 要部署于家庭、大楼内部以及园区内部，典型覆盖半径为几十米至上百米，当然，也可以部署于户外。接入点相当于一个连接有线网和无线网的桥梁，主要作用是将各个无线网络客户端连接到一起，然后将无线网络接入以太网。具体的，接入点可以是带有无线保真(Wireless Fidelity，WiFi)芯片的终端设备(如手机)或者网络设备(如路由器)。接入点可以为支持802.11be制式的设备。接入点也可以为支持802.11be、802.11ax、802.11ac、802.11n、802.11g、802.11b及802.11a等802.11家族的多种无线局域网(Wireless Local Area Networks，WLAN)制式的设备。本申请中的接入点可以是高效(High Efficient，HE)AP或极高吞吐量(Extremely High Throughput，EHT)AP，还可以是适用未来某代WiFi标准的接入点。
站点STA可以为无线通讯芯片、无线传感器或无线通信终端等，也可称为用户。例如，站点STA可以支持WiFi通讯功能，具体可以为手机(Mobile Phone)、平板电脑(Pad)、带无线收发功能的电脑(如笔记本电脑、掌上电脑等)、移动互联网设备(Mobile Internet Device，MID)、虚拟现实(Virtual Reality，VR)设备、增强现实(Augmented Reality，AR)设备、工业控制(Industrial Control)中的无线终端、无人驾驶(Self Driving)中的无线终端、远程医疗(Remote Medical)中的无线终端、智能电网(Smart Grid)中的无线终端、运输安全(Transportation Safety)中的无线终端、智慧城市(Smart City)中的无线终端、智慧家庭(Smart Home)中的无线终端、蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字助理(Personal Digital Assistant，PDA)、手持设备、计算设备或其它处理设备、车载设备、智能可穿戴设备等等。
同样的，站点STA可以为支持802.11be制式的设备。站点STA也可以为支持802.11be、802.11ax、802.11ac、802.11n、802.11g、802.11b及802.11a等802.11家族的多种无线局域网制式的设备。本申请中的站点STA可以是高效HE STA或极高吞吐量EHT STA，还可以是适用未来某代WiFi标准的站点。
此外，接入点AP和站点STA还可以是应用于车联网中的设备，物联网(Internet of Things，IoT)中的物联网节点、传感器等，智慧家居中的智能摄像头、智能遥控器、智能水表电表，以及智慧城市中的传感器等，本申请实施例对于接入点和站点的具体种类不作限定。
IEEE802.11be(EHT)的目标之一是支持低时延数据传输。IEEE802.11UHR SG正在讨论支持低时延高可靠通信。低时延高可靠业务数据，相对于其他数据而言，对服务质量(Quality of Service，QoS)的要求比较高。
在相关技术中，一种方式是通过多链路重复传输来提高传输可靠性、降低传输时延，但这种方式对资源消耗比较大，重复数据在各链路上独立传输，失去了物理层信号处理手段比如信道编码的收益。另一种方式是用较为低阶的调制与编码策略(Modulation and Coding Scheme，MCS)，来提高可靠性和降低(因重传导致的)传输时延，但是无法满足在高可靠性低时延数据和普通数据的同时传输。
在本申请实施例中，发送端发送物理层协议数据单元PPDU；该PPDU的数据部分包括至少两个子部分；每个子部分对应的调制编码策略MCS不同。这样，通过将PPDU的数据部分划分为两部分，分别用不同的MCS传输不同类型的数据，能够实现高可靠性低时延数据与普通数据的同时传输，在同一PPDU可以确保高可靠性低时延数据的可靠传输，降低传输失败的风险，降低资源消耗。
下面，通过具体实施例对本申请所示的方案进行详细说明。需要说明的是，下面几个实施例可以独立存在，也可以相互结合，对于相同或相似的内容，在不同的实施例中不再重复说明。
下面，结合图2所示的实施例，对数据传输的过程进行说明。
图2为本申请实施例提供的一种数据传输方法的流程示意图。请参见图2，该数据传输方法可以包括：
S201、发送物理层协议数据单元PPDU；PPDU的数据部分包括至少两个子部分；每个子部分对应的调制编码策略MCS不同。
需要说明的是，数据传输的发送端可以为站点，也可以为接入点；同样的，数据传输的接收端可以为站点，也可以为接入点，本申请实施例对此不作限定。
WiFi协议中包括媒体接入控制(Medium Access Control，MAC)层和物理(Physical，PHY)层。其中，MAC层业务数据单元(MAC Service Data Unit，MSDU)是最原始的待发数据信息。MAC层协议数据单元(MAC Protocol Data Unit，MPDU)是将MSDU按一定帧结构包装后的待发数据信息。物理层业务数据单元(PHY Service Data Unit，PSDU)是指从MAC层传来的MPDU信息。物理层协议数据单元(PHY Protocol Data Unit，PPDU)可以是指物理层协议数据单元，具体可以是将PSDU按照特定的帧格式进行数据封装后的数据包。在一些情况下，为了提高小包的传输效率，可以进行聚合操作，得到聚合MSDU(aggregate MSDU，A-MSDU)以及聚合MPDU(aggregate MPDU，A-MPDU)。
本申请实施例中，物理层协议数据单元PPDU的数据部分(Data)被划分为了至少两个子部分，每个子部分对应的调制编码策略MCS不相同，可以用来发送不同数据类型的数据。发送端可以根据数据的不同类型对应设置不同的MCS。
示例性地，本申请实施例中数据部分可以包括两个子部分，分别用来传输第一数据和第二数据；其中，第一数据可以包括对于要求高可靠性、低时延等高优先级数据，发送端可以选择可靠性高的MCS来传输该第一数据以降低数据传输失败的风险，提高数据传输可靠性、降低时延；第二数据可以为低优先级的普通数据，发送端可以选择较低的MCS来传输该第二数据以保证吞吐率。这样，通过采用不同的MCS进行数据传输，发送端可以在降低资源消耗的同时，在一个PPDU上实现低时延高可靠数据和普通数据的可靠传输。
当然，PPDU的数据部分具体可以为两部分、三部分、四部分或者更多部分，分别对应设置不同的MCS，这样能够满足多种类型的数据传输，能够进一步提高数据传输的灵活性。
本申请实施例提供的数据传输方法，发送端发送物理层协议数据单元PPDU；该PPDU的数据部分包括至少两个子部分；每个子部分对应的调制编码策略MCS不同。这样，通过将PPDU的数据部分划分为两部分，分别用不同的MCS传输不同类型的数据，能够实现高可靠性低时延数据与普通数据的同时传输，在同一PPDU可以确保高可靠性低时延数据的可靠传输，降低传输失败的风险，降低资源消耗。
在一种可能的实施方式中，PPDU中包括指示信息；指示信息用于指示每个子部分对应的时域长度、每个子部分对应的MCS以及每个子部分对应的物理层填充信息。
本申请实施例中，时域长度可以是指第一数据或者第二数据对应的数据部分的时域上的长度，例如可以为55个符号(symbol)或其他表示长度的方式如按照L-SIG field中的LENGTH subfield定义的长度等。物理层填充信息(padding)可以是指各个子部分对应的填充信息，如Pre-FEC Padding Factor等。
指示信息具体可以用于指示每个子部分对应的时域长度、MCS以及物理填充信息，这样发送端可以通过指示信息将PPDU中的数据分布通知接收端，确保数据传输的准确性和可靠性。
在一种可能的实施方式中，PPDU的数据部分包括至少两个用户对应的数据部分；每个用户的数据部分包括至少两个子部分；每个用户中各个子部分对应的MCS不同。
在EHT(WiFi 7)中，PPDU可以包括单用户PPDU(Signal-User PPDU，SU PPDU)、多用户PPDU(Multi-user PPDU，MU PPDU)以及基于触发帧的PPDU(Trigger Based PPDU，TB PPDU)等。在单用户SU PPDU中，数据部分可以为一个用户对应的数据部分；而在多用户MU PPDU中的数据部分可以为至少两个用户对应的数据部分。
在MU PPDU中，每个用户的数据部分在该用户对应的资源单元(Resource Unit，RU)上可各自独立划分为至少两部分，每部分可以对应不同的MCS。示例性地，当MU PPDU 中包括第一用户和第二用户的数据部分时，第一用户对应的数据部分可以划分为两个子部分，各个子部分的MCS不同；第二用户对应的数据部分可以划分为两个子部分，各个子部分的MCS不同。这样，在多用户PPDU中，可以针对每个用户的数据部分进行划分并用不同的MCS传输不同类型的数据，能够提高数据传输的可靠性。
在一种可能的实施方式中，PPDU中包括指示信息；指示信息用于指示每个用户对应的各个子部分的时域长度、每个用户对应的各个子部分的MCS以及每个用户对应的各个子部分的物理层填充信息。
本申请实施例中，PPDU中的指示信息可以用于指示每个用户对应的每个子部分的时域长度、MCS以及物理层填充信息。这样发送端可以通过指示信息将PPDU中的数据分布情况通知接收端，确保数据传输的准确性和可靠性。
在一种可能的实施方式中，指示信息位于PPDU的物理层前导码信息中。
在一种可能的实施方式中，指示信息位于通用信令字段U-SIG或极高吞吐量信令字段EHT-SIG或其他功能信令字段中。
本申请实施例中，在SU PPDU以及MU PPDU中，指示信息可以包括于PPDU的物理层前导码信息(PHY preamble)中，具体可以位于通用信令字段(Universal Signal field，U-SIG)或者极高吞吐量信令字段EHT-SIG(EHT Signal)或者其他功能信令字段中。发送端通过物理层前导码将该指示信息通知接收端，以使得接收端可以准确解码该PPDU。应理解，该指示信息也可以包括于其他物理前导码信息中，具体前导码字段也可以采用其他名称表示，例如UHR-SIG等，本申请实施例对此不作限定。
图3示出了一种PPDU的帧结构。图3中为极高吞吐量信令多用户PPDU(EHT Multi-user PPDU，EHT MU PPDU)的帧结构。如图3中(a)所示出的，帧结构中包括多个物理层前导码、数据部分以及扩展字段PE。图3中(b)则示出的各个字段的具体描述和功能。该帧结构为已有WiFi协议的帧结构，本申请实施例在此不再展开描述。
图4为本申请实施例提供的一种单用户SU PPDU的帧结构。如图4所示出的，针对物理层协议单元PPDU的数据部分Data，本申请实施例中在时域上将其划分为了A、B两个子部分，A子部分可以用于传输第一数据A-MPDU1，B子部分可以用于传输第二数据A-MPDU2，A、B两个子部分采用不同的MCS。A-MPDU1和A-MPDU2二者组成的整体可以称为聚合物理层业务数据单元(Aggregate PHY Service Data Unit，A-PSDU)，当然也可以采用其他名称或者其他表示方式，本申请实施例对此不作限定。需要说明的是，A、B两个子部分的时域长度可以相同也可以不同，具体可以基于实际需求进行划分；A子部分也可以不需要物理层填充信息，具体可以基于实际需求配置，本申请实施例对此亦不作限 定。
具体的，发送端在A-MPDU1可以聚合高服务质量要求的数据，例如时延敏感数据的MPDU以及高可靠性数据的MPDU等；在A-MPDU2中可以聚合普通数据。这样，发送端能够在一个PPDU中基于不同的MCS传输高可靠低时延数据和普通数据，同一PPDU中给予低时延高可靠MPDU更高可靠性的传输。
示例性地，图5为本申请实施例提供的一种多用户MU PPDU的帧结构。如图5所示出的，MU PPDU中的数据部分分为两个资源单元RU，包括两个用户对应的数据部分，分别对应第一用户(User1)和第一用户(User1)。本申请实施例中，可以将第一用户对应的数据部分划分为A、B两个子部分，得到User1-A和User1-B，每个子部分的MCS不相同，可以分别用于传输第一数据和第二数据；同时将第二用户对应的数据部分划分为A、B两个子部分，得到User2-A和User2-B，每个子部分的MCS不相同，可以分别用于传输第三数据和第四数据。
可选的，第一用户和第二用户具体划分的时域长度以及MCS等信息可以相同，也可以不相同，具体例如第一数据与第三数据对应的时域长度、MCS等可以相同，也可以不相同，本申请实施例对此不作限定。
需要说明的是，在图4以及图5的示例中，每个用户对应的数据部分包括两个子部分。在实际应用中，每个用户的数据部分也可以包括3个或者更多个子部分，并且不同用户之间包括的子部分数量也可以不相同，例如第一用户可以包括3个子部分，第二用户可以包括4个子部分，具体可以基于实际需求进行灵活配置，本申请实施例对此不作限定。
在一种可能的实施方式中，PPDU为基于触发帧的PPDU，触发帧用于指示PPDU中的每个子部分对应的时域长度、每个子部分对应的MCS以及每个子部分对应的物理层填充信息。
在一种可能的实施方式中，触发帧为基本触发帧，基本触发帧内的与触发类型相关的公共信息子域或用户信息子域中，包括每个子部分对应的时域长度、每个子部分对应的MCS以及每个子部分对应的物理层填充信息。
本申请实施例中，当PPDU为TB PPDU时，各个子部分对应的时域长度、MCS以及物理填充信息可以由触发帧(Trigger frame)指示，具体可以位于基本触发帧(Basic trigger frame)中的与触发类型相关的公共信息子域或用户信息子域(trigger dependent User Info subfield)中。
示例性地，图6示出了一种触发帧的格式(trigger frame format)。如图6所示出的，在触发帧中包括有公共信息子域(Common Info)和用户信息列表(User Info List)。其中， 用户信息列表包括一种或者多种用户信息区域。各个子部分对应的时域长度、MCS以及物理填充信息可以位于该公共信息子域中。
示例性地，图7示出了一种用户信息区域的格式。如图7所示出的，在用户信息区域中，包括有与触发类型相关的用户信息子域，各个子部分对应的时域长度、MCS以及物理填充信息也可以位于该与触发类型相关的用户信息子域中。
在一种可能的实施方式中，数据部分包括两个子部分，分别用于传输第一数据和第二数据；第一数据为第一优先级数据或第一可靠性数据；第二数据为第二优先级数据或第二可靠性数据。
本申请实施例中，数据部分可以包括两个子部分，分别用于传输第一数据和第二数据。第一数据与第二数据可以通过优先级进行区分，第一数据为第一优先级，可以是高优先级数据；第二数据为第二优先级，可以是低优先级数据。第一数据与第二数据也可以通过可靠性进行区分，第一数据为第一可靠性，可以是高可靠性数据；第二数据为第二可靠性，可以是低可靠性数据。当然，数据部分也可以包括更多子部分，分别对应更多不同优先级或者不同可靠性的数据，不同数据也可以采用其他区分方式，本申请实施例对此不作限定。
在上述实施例的基础上，以下示出了三种具体的发送过程示例：
示例一、SU PPDU的数据传输过程
站点STA的MAC层收到来自上层的待发送数据，其中高可靠低时延数据被封装在MPDU1-4中，普通数据被封装在MPDU5-15中。STA通过增强的分布式通道访问(Enhanced Distributed Channel Access，EDCA)抢占到20MHz带宽发送机会(Transmission Opportunity，TXOP)，组装了SU PPDU。在该SU PPDU中，数据部分(data部分)总的时域长度为2ms(125个symbol)，其中第一数据(对应A子部分)占0.8ms(50个symbol)，对应的MCS为MCS3，pre-FEC padding factor为1，第二数据(对应B子部分)占1.2ms(75个symbol)对应的MCS为MCS6，pre-FEC padding factor为1。第一数据为A-MPDU1，聚合了MPDU1-4；第二数据为A-MPDU2，聚合了MPDU5-15。A子部分和B子部分分别对应的时域长度及各自MCS、物理层padding信息等通过指示信息指示，该指示信息装在U-SIG中。之后站点STA可以发送该SU PPDU，在同一PPDU中保证低时延高可靠性数据的可靠传输，降低数据传输失败的风险。
示例二、TB PPDU的数据传输过程
站点STA的MAC层收到来自上层的待发送数据，其中高可靠低时延数据被封装在MPDU1-4中，普通数据被封装在MPDU5-15中。站点STA被基本触发帧(basic trigger frame)触发上行发送TB PPDU，该TB PPDU所占RU为242-tone(20Mhz)，触发帧中 指定data部分中的A子部分占1ms、MCS3，pre-FEC padding factor为1，B子部分占1ms、MCS6，pre-FEC padding factor为2。
站点STA组装TB PPDU，A子部分中传输的第一数据A-MPDU1聚合了MPDU 1-4，B子部分中传输的第二数据A-MPDU2聚合了MPDU5-15。之后站点STA可以发送该TB PPDU，在同一PPDU中保证低时延高可靠性数据的可靠传输，降低数据传输失败的风险。
示例三、MU PPDU的数据传输过程
接入点AP的MAC层收到来自上层的待发送数据，其中高可靠低时延数据被封装在MPDU1-4中，普通数据被封装在MPDU5-15中，发送给目标站点STA。
接入点AP通过EDCA抢占到40MHz带宽发送机会TXOP，组装了MU PPDU，data部分总的时域长度2ms。其中一个242-tone(子载波)RU发送给目标站点STA，A子部分占1ms、MCS3，pre-FEC padding factor为1，B子部分占1ms、MCS6，pre-FEC padding factor为3，；其中A子部分中传输的第一数据A-MPDU1聚合了MPDU1-4，B子部分中传输的第二数据A-MPDU2聚合了MPDU5-15；A子部分以及B子部分对应的时域长度及各自MCS、物理层padding信息等通过指示信息指示，该指示信息装在EHT-SIG中。之后，接入点AP可以发送该MU PPDU，在同一PPDU中保证低时延高可靠性数据的可靠传输，降低数据传输失败的风险。
图8为本申请实施例提供的另一种数据传输方法的流程示意图。请参见图8，该数据传输方法可以包括：
S801、接收物理层协议数据单元PPDU；PPDU的数据部分包括至少两个子部分；每个子部分对应的调制编码策略MCS不同。
S802、根据MCS，对PPDU进行解码。
本申请实施例中，数据传输方法的接收端可以为站点STA或者接入点AP。接收端可以接收PPDU，之后根据不同的MCS，对PPDU数据部分划分得到的至少两个子部分分别进行解码，得到不同类型的数据。这样，在同一个PPDU中，可以采用不同的MCS来传输高可靠性低时延数据和普通数据，能够在确保高可靠性低时延数据可靠传输的同时保证吞吐率。
本申请实施例中，接收端接收物理层协议数据单元PPDU；该PPDU的数据部分包括至少两个子部分；每个子部分对应的调制编码策略MCS不同；根据MCS，对PPDU进行解码。这样，通过将PPDU的数据部分划分为两部分，分别用不同的MCS传输不同类型的数据，能够实现高可靠性低时延数据与普通数据的同时传输，在同一PPDU可以确保高可靠性低时延数据的可靠传输，降低传输失败的风险，降低资源消耗。
在一种可能的实施方式中，PPDU中包括指示信息；指示信息用于指示每个子部分对应的时域长度、每个子部分对应的MCS以及每个子部分对应的物理层填充信息。
在一种可能的实施方式中，PPDU的数据部分包括至少两个用户对应的数据部分；每个用户的数据部分包括至少两个子部分；每个用户中各个子部分对应的MCS不同。
在一种可能的实施方式中，PPDU中包括指示信息；指示信息用于指示每个用户对应的各个子部分的时域长度、每个用户对应的各个子部分的MCS以及每个用户对应的各个子部分的物理层填充信息。
在一种可能的实施方式中，指示信息位于PPDU的物理层前导码信息中。
在一种可能的实施方式中，指示信息位于通用信令字段U-SIG或极高吞吐量信令字段EHT-SIG或其他功能信令字段中。
在一种可能的实施方式中，PPDU为基于触发帧的PPDU，触发帧用于指示PPDU中的每个子部分对应的时域长度、每个子部分对应的MCS以及每个子部分对应的物理层填充信息。
在一种可能的实施方式中，触发帧为基本触发帧，基本触发帧内的与触发类型相关的公共信息子域或用户信息子域中，包括每个子部分对应的时域长度、每个子部分对应的MCS以及每个子部分对应的物理层填充信息。
在一种可能的实施方式中，数据部分包括两个子部分，分别用于传输第一数据和第二数据；第一数据为第一优先级数据或第一可靠性数据；第二数据为第二优先级数据或第二可靠性数据。
上述各个实施方式的实现过程可以参照前述实施例的描述，本申请实施例在此不作赘述。
图9为本申请实施例提供的一种数据传输装置的结构示意图。请参见图9，该数据传输装置90可以包括：
发送模块91，发送物理层协议数据单元PPDU；PPDU的数据部分包括至少两个子部分；每个子部分对应的调制编码策略MCS不同。
在一种可能的实施方式中，PPDU中包括指示信息；指示信息用于指示每个子部分对应的时域长度、每个子部分对应的MCS以及每个子部分对应的物理层填充信息。
在一种可能的实施方式中，PPDU的数据部分包括至少两个用户对应的数据部分；每个用户的数据部分包括至少两个子部分；每个用户中各个子部分对应的MCS不同。
在一种可能的实施方式中，PPDU中包括指示信息；指示信息用于指示每个用户对应的各个子部分的时域长度、每个用户对应的各个子部分的MCS以及每个用户对应的各个 子部分的物理层填充信息。
在一种可能的实施方式中，指示信息位于PPDU的物理层前导码信息中。
在一种可能的实施方式中，指示信息位于通用信令字段U-SIG或极高吞吐量信令字段EHT-SIG或其他功能信令字段中。
在一种可能的实施方式中，PPDU为基于触发帧的PPDU，触发帧用于指示PPDU中的每个子部分对应的时域长度、每个子部分对应的MCS以及每个子部分对应的物理层填充信息。
在一种可能的实施方式中，触发帧为基本触发帧，基本触发帧内的与触发类型相关的公共信息子域或用户信息子域中，包括每个子部分对应的时域长度、每个子部分对应的MCS以及每个子部分对应的物理层填充信息。
在一种可能的实施方式中，数据部分包括两个子部分，分别用于传输第一数据和第二数据；第一数据为第一优先级数据或第一可靠性数据；第二数据为第二优先级数据或第二可靠性数据。
本申请实施例提供的数据传输装置90可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。数据传输装置90具体可以为芯片、芯片模组等，本申请实施例对此不作限定。
图10为本申请实施例提供的另一种数据传输装置的结构示意图。请参见图10，该数据传输装置100可以包括：
接收模块1001，用于接收物理层协议数据单元PPDU；PPDU的数据部分包括至少两个子部分；每个子部分对应的调制编码策略MCS不同；
解码模块1002，用于根据MCS，对PPDU进行解码。
在一种可能的实施方式中，PPDU中包括指示信息；指示信息用于指示每个子部分对应的时域长度、每个子部分对应的MCS以及每个子部分对应的物理层填充信息。
在一种可能的实施方式中，PPDU的数据部分包括至少两个用户对应的数据部分；每个用户的数据部分包括至少两个子部分；每个用户中各个子部分对应的MCS不同。
在一种可能的实施方式中，PPDU中包括指示信息；指示信息用于指示每个用户对应的各个子部分的时域长度、每个用户对应的各个子部分的MCS以及每个用户对应的各个子部分的物理层填充信息。
在一种可能的实施方式中，指示信息位于PPDU的物理层前导码信息中。
在一种可能的实施方式中，指示信息位于通用信令字段U-SIG或极高吞吐量信令字段EHT-SIG或其他功能信令字段中。
在一种可能的实施方式中，PPDU为基于触发帧的PPDU，触发帧用于指示PPDU中的每个子部分对应的时域长度、每个子部分对应的MCS以及每个子部分对应的物理层填充信息。
在一种可能的实施方式中，触发帧为基本触发帧，基本触发帧内的与触发类型相关的公共信息子域或用户信息子域中，包括每个子部分对应的时域长度、每个子部分对应的MCS以及每个子部分对应的物理层填充信息。
在一种可能的实施方式中，数据部分包括两个子部分，分别用于传输第一数据和第二数据；第一数据为第一优先级数据或第一可靠性数据；第二数据为第二优先级数据或第二可靠性数据。
本申请实施例提供的数据传输装置100可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。数据传输装置100具体可以为芯片、芯片模组等，本申请实施例对此不作限定。
图11为本申请实施例提供的一种数据传输设备的结构示意图。请参见图11，数据传输设备110可以包括：存储器111、处理器112。示例性地，存储器111、处理器112，各部分之间通过总线113相互连接。
存储器111用于存储程序指令；
处理器112用于执行该存储器所存储的程序指令，实现上述实施例所示的数据传输方法。
图11实施例所示的数据传输设备可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
本申请实施例提供一种计算机可读存储介质，计算机可读存储介质中存储有计算机执行指令，当计算机执行指令被处理器执行时用于实现上述数据传输方法。
本申请实施例还可提供一种计算机程序产品，包括计算机程序，该计算机程序被处理器执行时，可实现上述数据传输方法。
本申请实施例提供一种芯片，该芯片上存储有计算机程序，当计算机程序被该芯片执行时，实现上述数据传输方法。
本申请实施例还提供一种芯片模组，该芯片模组上存储有计算机程序，当计算机程序被该芯片模组执行时，实现上述数据传输方法。
应理解，本申请实施例中所涉及的接入点和站点又可以统称为通信装置，其可以包括硬件结构、软件模块，以硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各方法功能。上述各方法功能其中的某个方法功能可以以硬件结构、软件模块、或者硬件 结构加软件模块的方式来实现。
需要说明的是，本申请实施例中提及的处理器可以是中央处理器(central processing unit，CPU)，还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
应理解，本申请实施例中提及的存储器可以是易失性存储器或非易失性存储器,或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synch link DRAM，SLDRAM)和直接内存总线随机存取存储器(direct ram bus RAM，DR RAM)。需要说明的是，当处理器为通用处理器、DSP、ASIC、FPGA或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件时，存储器(存储模块)集成在处理器中。应注意,本文描述的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
关于上述实施例中描述的各个装置、产品包含的各个模块/单元，其可以是软件模块/单元，也可以是硬件模块/单元，或者也可以部分是软件模块/单元，部分是硬件模块/单元。各个装置、产品可以应用于或者集成于芯片、芯片模组或终端设备中。示例性地，对于应用于或者集成于芯片的各个装置、产品，其包含的各个模块/芯片可以是都采用电路等硬件的方式实现，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于芯片内部集成的处理器，剩余的部分模块/单元可以采用电路等硬件方式实现。
在本申请中，术语“包括”及其变形可以指非限制性的包括；术语“或”及其变形可以指“和/或”。本申请中术语“第一”、“第二”等是用于区别类似的对象，而不必用于 描述特定的顺序或先后次序。本申请中，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
以上仅是本申请的部分实施例，应当指出，对于本技术领域的普通技术人员来说，在不脱离本申请原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应当视为本申请的保护范围。

Claims (16)

  1. 一种数据传输方法，其特征在于，包括：
    发送物理层协议数据单元PPDU；所述PPDU的数据部分包括至少两个子部分；每个子部分对应的调制编码策略MCS不同。
  2. 根据权利要求1所述的方法，其特征在于，所述PPDU中包括指示信息；所述指示信息用于指示每个所述子部分对应的时域长度、每个所述子部分对应的MCS以及每个所述子部分对应的物理层填充信息。
  3. 根据权利要求1所述的方法，其特征在于，所述PPDU的数据部分包括至少两个用户对应的数据部分；每个用户的数据部分包括至少两个子部分；每个用户中各个子部分对应的MCS不同。
  4. 根据权利要求3所述的方法，其特征在于，所述PPDU中包括指示信息；所述指示信息用于指示每个用户对应的各个子部分的时域长度、每个用户对应的各个子部分的MCS以及每个用户对应的各个子部分的物理层填充信息。
  5. 根据权利要求2或4任一项所述的方法，其特征在于，所述指示信息位于所述PPDU的物理层前导码信息中。
  6. 根据权利要求5所述的方法，其特征在于，所述指示信息位于通用信令字段U-SIG或极高吞吐量信令字段EHT-SIG或其他功能信令字段中。
  7. 根据权利要求1所述的方法，其特征在于，所述PPDU为基于触发帧的PPDU，所述触发帧用于指示所述PPDU中的每个所述子部分对应的时域长度、每个所述子部分对应的MCS以及每个所述子部分对应的物理层填充信息。
  8. 根据权利要求7所述的方法，其特征在于，所述触发帧为基本触发帧，所述基本触发帧内的与触发类型相关的公共信息子域或用户信息子域中，包括每个所述子部分对应的时域长度、每个所述子部分对应的MCS以及每个所述子部分对应的物理层填充信息。
  9. 根据权利要求1至8任一项所述的方法，其特征在于，所述数据部分包括两个子部分，分别用于传输第一数据和第二数据；所述第一数据为第一优先级数据或第一可靠性数据；所述第二数据为第二优先级数据或第二可靠性数据。
  10. 一种数据传输方法，其特征在于，包括：
    接收物理层协议数据单元PPDU；所述PPDU的数据部分包括至少两个子部分；每个子部分对应的调制编码策略MCS不同；
    根据所述MCS，对所述PPDU进行解码。
  11. 一种数据传输装置，其特征在于，包括：
    发送模块，发送物理层协议数据单元PPDU；所述PPDU的数据部分包括至少两个子部分；每个子部分对应的调制编码策略MCS不同。
  12. 一种数据传输装置，其特征在于，包括：
    接收模块，用于接收物理层协议数据单元PPDU；所述PPDU的数据部分包括至少两个子部分；每个子部分对应的调制编码策略MCS不同；
    解码模块，用于根据所述MCS，对所述PPDU进行解码。
  13. 一种数据传输设备，其特征在于，包括：处理器、存储器；
    所述存储器存储计算机执行指令；
    所述处理器执行所述存储器存储的计算机执行指令，实现如权利要求1至10任一项所述的方法。
  14. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有计算机执行指令，当所述计算机执行指令被执行时使得权利要求1至10任一项所述的方法被执行。
  15. 一种计算机程序产品，其特征在于，包括计算机程序，所述计算机程序被执行时使得权利要求1至10任一项所述的方法被执行。
  16. 一种芯片，其特征在于，所述芯片上存储有计算机程序，所述计算机程序被所述芯片执行时，使得权利要求1至10任一项所述的方法被执行。
PCT/CN2023/129898 2022-11-07 2023-11-06 数据传输方法、装置以及设备 Ceased WO2024099259A1 (zh)

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US20160212749A1 (en) * 2015-01-19 2016-07-21 Qualcomm Incorporated Systems and methods for use of multiple modulation and coding schemes in a physical protocol data unit
US20180091256A1 (en) * 2016-09-28 2018-03-29 Ilan Sutskover Triggering of an uplink pair of packets in a wireless local area network
US20220200732A1 (en) * 2019-09-12 2022-06-23 Huawei Technologies Co., Ltd. Data Retransmission Method And Communication Apparatus
WO2022141560A1 (zh) * 2020-12-31 2022-07-07 华为技术有限公司 传输数据流的方法和通信装置

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Publication number Priority date Publication date Assignee Title
US20160212749A1 (en) * 2015-01-19 2016-07-21 Qualcomm Incorporated Systems and methods for use of multiple modulation and coding schemes in a physical protocol data unit
US20180091256A1 (en) * 2016-09-28 2018-03-29 Ilan Sutskover Triggering of an uplink pair of packets in a wireless local area network
US20220200732A1 (en) * 2019-09-12 2022-06-23 Huawei Technologies Co., Ltd. Data Retransmission Method And Communication Apparatus
WO2022141560A1 (zh) * 2020-12-31 2022-07-07 华为技术有限公司 传输数据流的方法和通信装置

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