WO2021184272A1 - 数据传输方法、装置、通信设备及存储介质 - Google Patents

数据传输方法、装置、通信设备及存储介质 Download PDF

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Publication number
WO2021184272A1
WO2021184272A1 PCT/CN2020/080071 CN2020080071W WO2021184272A1 WO 2021184272 A1 WO2021184272 A1 WO 2021184272A1 CN 2020080071 W CN2020080071 W CN 2020080071W WO 2021184272 A1 WO2021184272 A1 WO 2021184272A1
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Prior art keywords
duration
frame
data frame
transmission
data
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PCT/CN2020/080071
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English (en)
French (fr)
Inventor
董贤东
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北京小米移动软件有限公司
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Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to US17/912,192 priority Critical patent/US20230147839A1/en
Priority to PCT/CN2020/080071 priority patent/WO2021184272A1/zh
Priority to CN202080000558.3A priority patent/CN113692717A/zh
Publication of WO2021184272A1 publication Critical patent/WO2021184272A1/zh

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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
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • 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
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with control information
    • H04L1/1678—Details of the supervisory signal the supervisory signal being transmitted together with control information where the control information is for timing, e.g. time stamps

Definitions

  • This application relates to the field of wireless communication technology, but is not limited to the field of wireless communication technology, and in particular to data transmission methods, devices, communication equipment, and storage media.
  • the main features of the new generation of mainstream Wi-Fi technology are the use of a high 320MHz transmission bandwidth, and the use of multiple frequency band aggregation and collaboration technologies. Compared with the existing IEEE802.11ax, the rate and throughput are increased by at least four times.
  • the main application scenarios of the new technology are video transmission, augmented reality (AR, Augmented Reality), virtual reality (VR, Virtual Reality), etc.
  • the aggregation and collaboration technology of multiple frequency bands refers to the simultaneous communication between Wi-Fi devices in the 2.4GHz, 5.8GHz and 6-7GHz frequency bands.
  • the embodiments of the present disclosure provide a data transmission method, device, communication device, and storage medium.
  • a data transmission method wherein, when applied to a first communication device, the method includes:
  • determining the duration indication information according to the receiving status of the data frame in the multi-transport connection transmission includes:
  • the duration indication information is determined, where the duration indication information indicated by the duration indication information includes: the transmission duration of the retransmitted data frame.
  • the duration indicated by the duration indication information further includes at least one of the following:
  • the transmission duration of the second determined message frame corresponding to the retransmitted data frame is the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the transmission duration of the retransmitted data frame includes: the transmission duration of retransmitting one unicast data frame.
  • the first confirmation message frame is a block confirmation message frame
  • the transmission duration of the retransmitted data frame includes: the transmission duration of the retransmission of the n data blocks that have failed to be received in the continuous data frame.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between two adjacent data blocks in the data block.
  • the duration indicated by the duration indication information further includes at least one of the following: a short inter-frame interval between the first determined message frame and the retransmitted data frame; or The short inter-frame interval between the retransmitted data frame and the second determined message frame corresponding to the retransmitted data frame.
  • the determining the duration indication information according to the receiving status of the data frame in the multi-transport connection transmission includes:
  • the duration indication information is determined, where the duration expression indicated by the duration indication information includes:
  • the 2*ACK represents the transmission duration of the first determined message frame and the transmission duration of the second determined message frame corresponding to the retransmitted data frame
  • the data frame length represents when the data frame is unicast data When frame, the transmission duration of one unicast data frame is retransmitted
  • 2*SIFS represents the interval between two short frames.
  • the determining the duration indication information according to the receiving status of the data frame in the multi-transport connection transmission includes:
  • the duration indication information is determined, where the duration expression indicated by the duration indication information includes:
  • the 2*BA represents the transmission time length of the first certain message frame and the transmission time length of the second certain message frame corresponding to the retransmitted data frame
  • the n* data block length represents when the data frame is continuous In the data frame, the transmission duration of the n data blocks that failed to be received in the continuous data frame is retransmitted
  • (1+n)*SIFS represents n+1 short inter-frame intervals.
  • the duration indication information includes:
  • the duration field located in the MAC frame header of the first confirmation message frame
  • the length field located in the physical frame header of the first confirmation message frame.
  • the determining the duration indication information according to the receiving status of the data frame in the multi-transport connection transmission includes: when the data frame is successfully received, making the duration indicated by the duration indication information Is 0.
  • a data transmission method wherein, when applied to a second communication device, the method includes:
  • the duration indicated by the duration indication information includes: the transmission duration of the retransmitted data frame.
  • the duration indicated by the duration indication information further includes at least one of the following:
  • the transmission duration of the second determined message frame corresponding to the retransmitted data frame is the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the transmission duration of the retransmitted data frame includes: the transmission duration of retransmitting one unicast data frame.
  • the first confirmation message frame is a block confirmation message frame
  • the transmission duration of the retransmitted data frame includes: the transmission duration of the retransmission of the n data blocks that have failed to be received in the continuous data frame.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between two adjacent data blocks in the data block.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between the first determined message frame and the retransmitted data frame; and the retransmitted data frame The second determining the short inter-frame interval between message frames corresponding to the retransmitted data frame.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*ACK represents the transmission duration of the first determined message frame and the transmission duration of the second determined message frame corresponding to the retransmitted data frame
  • the data frame length represents when the data frame is unicast data When frame, the transmission duration of one unicast data frame is retransmitted
  • 2*SIFS represents the interval between two short frames.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*BA represents the transmission time length of the first certain message frame and the transmission time length of the second certain message frame corresponding to the retransmitted data frame
  • the n* data block length represents when the data frame is continuous In the data frame, the transmission duration of the n data blocks that failed to be received in the continuous data frame is retransmitted
  • (1+n)*SIFS represents n+1 short inter-frame intervals.
  • the determining the duration of continuing to occupy the transmission connection according to the duration indication information in the first confirmation message frame includes:
  • the duration field in the media access control MAC frame header of the first confirmation message frame determine the duration for continuing to occupy the transmission connection.
  • a data transmission method wherein, when applied to a third communication device, the method includes:
  • NAV Network Allocation Vector
  • the duration indicated by the duration indication information includes: the transmission duration of the retransmitted data frame.
  • the duration indicated by the duration indication information further includes at least one of the following:
  • the transmission duration of the second determined message frame corresponding to the retransmitted data frame is the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the transmission duration of the retransmitted data frame includes: the transmission duration of retransmitting one unicast data frame.
  • the first confirmation message frame is a block confirmation message frame
  • the transmission duration of the retransmitted data frame includes: the transmission duration of the retransmission of the n data blocks that have failed to be received in the continuous data frame.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between two adjacent data blocks in the data block.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between the first determined message frame and the retransmitted data frame; and the retransmitted data frame The second determining the short inter-frame interval between message frames corresponding to the retransmitted data frame.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*ACK represents the transmission duration of the first determined message frame and the transmission duration of the second determined message frame corresponding to the retransmitted data frame
  • the data frame length represents when the data frame is unicast data When frame, the transmission duration of one unicast data frame is retransmitted
  • 2*SIFS represents the interval between two short frames.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*BA represents the transmission time length of the first certain message frame and the transmission time length of the second certain message frame corresponding to the retransmitted data frame
  • the n* data block length represents when the data frame is continuous In the data frame, the transmission duration of the n data blocks that failed to be received in the continuous data frame is retransmitted
  • (1+n)*SIFS represents n+1 short inter-frame intervals.
  • the setting NAV according to the duration of continuing to occupy the transmission connection indicated by the duration indication information in the first confirmation message frame includes:
  • the NAV is set according to the duration of continuing to occupy the transmission connection as indicated by the length field in the physical frame header of the first confirmation message frame.
  • the setting NAV according to the duration of continuing to occupy the transmission connection indicated by the duration indication information in the first confirmation message frame includes:
  • the duration of avoidance is updated using the duration.
  • the setting NAV according to the duration of continuing to occupy the transmission connection indicated by the duration indication information in the first confirmation message frame includes:
  • the NAV In response to the duration of time being less than or equal to the avoidance time period in which the NAV instructs to keep silent on the transmission connection, the NAV is maintained.
  • a data transmission device which is applied to a first communication device, and the device includes: a first determining module and a sending module, wherein,
  • the first determining module is configured to determine the duration indication information according to the reception status of the data frame in the multi-transport connection transmission, where the duration indication information is used to indicate the duration of the continuous occupation of the transmission connection;
  • the sending module is configured to send a first confirmation message frame, where the first confirmation message frame includes: feedback information of the reception status and the duration indication information.
  • the first determining module includes:
  • the first determining submodule is configured to determine the duration indication information when the data frame fails to be received, wherein the duration indication information indicated by the duration indication information includes: the transmission duration of the retransmitted data frame.
  • the duration indicated by the duration indication information further includes at least one of the following:
  • the transmission duration of the second determined message frame corresponding to the retransmitted data frame is the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the transmission duration of the retransmitted data frame includes: the transmission duration of retransmitting one unicast data frame.
  • the first confirmation message frame is a block confirmation message frame
  • the transmission duration of the retransmitted data frame includes: the transmission duration of the retransmission of the n data blocks that have failed to be received in the continuous data frame.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between two adjacent data blocks in the data block.
  • the duration indicated by the duration indication information further includes at least one of the following: a short inter-frame interval between the first determined message frame and the retransmitted data frame; or The short inter-frame interval between the retransmitted data frame and the second determined message frame corresponding to the retransmitted data frame.
  • the first determining module includes:
  • the second determining submodule is configured to determine the duration indication information when the data frame fails to be received, wherein the duration expression indicated by the duration indication information includes:
  • the 2*ACK represents the transmission duration of the first determined message frame and the transmission duration of the second determined message frame corresponding to the retransmitted data frame
  • the data frame length represents when the data frame is unicast data When frame, the transmission duration of one unicast data frame is retransmitted
  • 2*SIFS represents the interval between two short frames.
  • the first determining module includes:
  • the third determining sub-module is configured to determine the duration indication information when the data frame fails to be received, wherein the duration expression indicated by the duration indication information includes:
  • the 2*BA represents the transmission time length of the first certain message frame and the transmission time length of the second certain message frame corresponding to the retransmitted data frame
  • the n* data block length represents when the data frame is continuous In the data frame, the transmission duration of the n data blocks that failed to be received in the continuous data frame is retransmitted
  • (1+n)*SIFS represents n+1 short inter-frame intervals.
  • the duration indication information includes:
  • the duration field located in the MAC frame header of the first confirmation message frame
  • the length field located in the physical frame header of the first confirmation message frame.
  • the first determining module includes:
  • the fourth determining submodule is configured to make the duration indicated by the duration indication information 0 when the data frame is successfully received.
  • a data transmission device which is applied to a second communication device, and the device includes: a first receiving module, a second determining module, and a third determining module, wherein,
  • the first receiving module is configured to receive a first confirmation message frame
  • the second determining module is configured to determine the reception status of the data frame in the transmission of the multi-transport connection according to the feedback information in the first confirmation message frame;
  • the third determining module is configured to determine the duration of continuing to occupy the transmission connection according to the duration indication information in the first confirmation message frame, wherein the duration indication information is based on the duration of the data frame. State the receiving status.
  • the duration indicated by the duration indication information includes: the transmission duration of the retransmitted data frame.
  • the duration indicated by the duration indication information further includes at least one of the following:
  • the transmission duration of the second determined message frame corresponding to the retransmitted data frame is the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the transmission duration of the retransmitted data frame includes: the transmission duration of retransmitting one unicast data frame.
  • the first confirmation message frame is a block confirmation message frame
  • the transmission duration of the retransmitted data frame includes: the transmission duration of the retransmission of the n data blocks that have failed to be received in the continuous data frame.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between two adjacent data blocks in the data block.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between the first determined message frame and the retransmitted data frame; and the retransmitted data frame The second determining the short inter-frame interval between message frames corresponding to the retransmitted data frame.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*ACK represents the transmission duration of the first determined message frame and the transmission duration of the second determined message frame corresponding to the retransmitted data frame
  • the data frame length represents when the data frame is unicast data When frame, the transmission duration of one unicast data frame is retransmitted
  • 2*SIFS represents the interval between two short frames.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*BA represents the transmission time length of the first certain message frame and the transmission time length of the second certain message frame corresponding to the retransmitted data frame
  • the n* data block length represents when the data frame is continuous In the data frame, the transmission duration of the n data blocks that failed to be received in the continuous data frame is retransmitted
  • (1+n)*SIFS represents n+1 short inter-frame intervals.
  • the third determining module includes:
  • the fifth determining submodule is configured to determine the duration of continuing to occupy the transmission connection according to the indication of the duration field in the media access control MAC frame header of the first confirmation message frame.
  • a data transmission device which is applied to a third communication device, and the device includes: a second receiving module and a setting module, wherein,
  • the second receiving module is configured to receive a first confirmation message frame
  • the setting module is configured to set a network allocation vector NAV according to the duration of continuing to occupy the transmission connection indicated by the duration indication information in the first confirmation message frame, wherein the duration indication information is based on multiple transmission connections The reception status of the data frame during transmission.
  • the duration indicated by the duration indication information includes: the transmission duration of the retransmitted data frame.
  • the duration indicated by the duration indication information further includes at least one of the following:
  • the transmission duration of the second determined message frame corresponding to the retransmitted data frame is the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the transmission duration of the retransmitted data frame includes: the transmission duration of retransmitting one unicast data frame.
  • the first confirmation message frame is a block confirmation message frame
  • the transmission duration of the retransmitted data frame includes: the transmission duration of the retransmission of the n data blocks that have failed to be received in the continuous data frame.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between two adjacent data blocks in the data block.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between the first determined message frame and the retransmitted data frame; and the retransmitted data frame The second determining the short inter-frame interval between message frames corresponding to the retransmitted data frame.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*ACK represents the transmission duration of the first determined message frame and the transmission duration of the second determined message frame corresponding to the retransmitted data frame
  • the data frame length represents when the data frame is unicast data When frame, the transmission duration of one unicast data frame is retransmitted
  • 2*SIFS represents the interval between two short frames.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*BA represents the transmission time length of the first certain message frame and the transmission time length of the second certain message frame corresponding to the retransmitted data frame
  • the n* data block length represents when the data frame is continuous In the data frame, the transmission duration of the n data blocks that failed to be received in the continuous data frame is retransmitted
  • (1+n)*SIFS represents n+1 short inter-frame intervals.
  • the setting module includes:
  • the second setting submodule is configured to set the NAV according to the duration of the continuous occupation of the transmission connection indicated by the length field in the physical frame header of the first confirmation message frame.
  • the setting module includes:
  • the third setting submodule is configured to update the avoidance duration by using the continuous duration in response to the duration being greater than the avoidance duration for keeping silent on the transmission connection indicated by the NAV.
  • the setting module includes:
  • the fourth setting sub-module is configured to maintain the NAV in response to the avoidance duration in which the duration is less than or equal to the NAV instruction to keep silent in the transmission connection.
  • a data transmission device including a processor, a memory, and an executable program stored on the memory and capable of being run by the processor, wherein the processor runs the When the program is executed, the steps of the data transmission method as described in the first aspect, the second aspect or the third aspect are executed.
  • a storage medium on which an executable program is stored, wherein the executable program is executed by a processor as described in the first, second or third aspect.
  • the steps of the data transmission method are described.
  • the data frame receiving end determines the duration indication information according to the receiving status of the data frame in the transmission of the multi-transmission connection, wherein the duration indication information is used for Indicate the duration of continuing to occupy the transmission connection; send a first confirmation message frame, where the first confirmation message frame includes: feedback information of the reception status and the duration indication information.
  • the first confirmation message frame includes: feedback information of the reception status and the duration indication information.
  • the duration can be set according to the needs of subsequent transmissions, a relatively fixed duration, which can reduce the waste of resources caused by the occupation of the transmission connection when there is no transmission demand, and can also reduce the transmission delay caused by the need to re-compete and use the transmission connection due to insufficient duration. Circumstances, thereby improving transmission efficiency.
  • Fig. 1 is a schematic flowchart of a data transmission method according to an exemplary embodiment
  • Fig. 2 is a schematic flowchart showing another data transmission method according to an exemplary embodiment
  • Fig. 3 is a schematic flowchart showing yet another data transmission method according to an exemplary embodiment
  • Fig. 4 is a block diagram showing a data transmission device according to an exemplary embodiment
  • Fig. 5 is a block diagram showing another data transmission device according to an exemplary embodiment
  • Fig. 6 is a block diagram showing yet another data transmission device according to an exemplary embodiment
  • Fig. 7 is a block diagram showing a device for data transmission according to an exemplary embodiment.
  • first, second, third, etc. may be used to describe various information in the embodiments of the present disclosure, the information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.
  • first information may also be referred to as second information, and similarly, the second information may also be referred to as first information.
  • word “if” as used herein can be interpreted as "when” or "when” or "in response to determination”.
  • the executive bodies involved in the embodiments of the present disclosure include but are not limited to: wireless communication networks, especially Wi-Fi networks, such as under the IEEE802.11a/b/g/n/ac standard, and under the IEEE802.11be standard in the next-generation Wi-Fi network Network equipment, including but not limited to: Wi-Fi routers and other wireless (AP, Access Point) access point equipment, wireless stations (STA, Station), user terminals, user nodes, mobile terminals or tablet computers, etc. .
  • Wi-Fi routers and other wireless (AP, Access Point) access point equipment wireless stations (STA, Station), user terminals, user nodes, mobile terminals or tablet computers, etc.
  • An application scenario of the embodiments of the present disclosure is that in the existing IEEE802.11 standard, after the data frame is transmitted, the data frame receiving end feeds back an acknowledgement message (ACK) frame to the data frame sending end, and the acknowledgement message frame can be divided into two Types: ACK frames for unicast data frames, and block acknowledgment messages (BA, Block ACK) for continuous data frames.
  • ACK acknowledgement message
  • BA Block ACK
  • the duration indicated by the duration field in the two confirmation message frames does not include the time required for retransmission of the data frame. If the data frame sender needs to retransmit the data frame, it needs to re-occupy the communication connection through competition or other means. In this way, the transmission delay of the data frame is lengthened and the transmission efficiency is reduced.
  • this exemplary embodiment provides a data transmission method.
  • the data transmission method may be applied to a first communication device of wireless communication.
  • the data transmission method may include:
  • Step 101 Determine the duration indication information according to the receiving status of the data frame in the multi-transport connection transmission, where the duration indication information is used to indicate the duration of the continuous occupation of the transmission connection;
  • Step 102 Send a first confirmation message frame, where the first confirmation message frame includes: feedback information of the reception status and the duration indication information.
  • the wireless communication may be Wi-Fi communication using standards such as IEEE802.11be; the first communication device, the second communication device, and the third communication device may be wireless stations (STA, STAtion) or wireless access in Wi-Fi communication. Access point (AP, Access Point), etc.
  • the data frame may be a data frame that is separately transmitted in each of the multiple transmission connections.
  • the data frame may be a physical layer protocol data frame (PPDU, Physical Layer Protocol Data Unit).
  • the first communication device may be the receiving end of the data frame
  • the second communication device may be the sending end of the data frame
  • the third communication device may be other communication devices other than the receiving end of the data frame and the sending end of the data frame.
  • Data frames may include unicast data frames and continuous data frames.
  • Multi-transmission connection transmission can be a transmission that occupies multiple transmission frequency bands.
  • the transmission frequency band can be the Wi-Fi working frequency band, such as 2.4GHz, 5.8GHz and 6-7GHz, etc.; it can also be the frequency range of the bandwidth occupied by the transmission connection. Among them, the frequency range of the bandwidth occupied by each transmission connection may belong to the same Wi-Fi working frequency band, or may belong to different Wi-Fi working frequency bands.
  • the second communication device may use one of the multiple transmission connections to send a data frame, which is received by the first communication device.
  • the first communication device After the first communication device receives the data frame, it can determine the reception status of the data frame by means of parity check, cyclic redundancy check CRC, etc., and feedback the reception status of the data frame by sending the first confirmation message frame to the second communication device .
  • the first confirmation message frame may be an acknowledgement (ACK) frame or a non-acknowledgement (NACK) frame for the unicast data frame.
  • the first confirmation message frame may be a Block-ACK (Block-ACK) frame for the continuous data frame or the like.
  • the first confirmation message frame may carry feedback information, which is used to indicate the reception of the data frame.
  • the first confirmation message frame may use 1 bit or more bits to indicate the success or failure of the unicast data frame reception, for example, "0" may be used to indicate the failure of the data frame reception.
  • the first confirmation message frame can use a bitmap to indicate the reception of each data block in the continuous data frame.
  • “0” can be used to indicate that the data block has failed to be received, and “1” is used to indicate The data block is successfully received; “1” can also be used to indicate that the data block has failed to be received, and “0” can be used to indicate that the data block is successfully received.
  • the first communication device may indicate the failure of the reception of the data frame by sending the first confirmation message frame, and the second communication device may retransmit the data frame.
  • the second communication device may retransmit the unicast data frame.
  • the first communication device can indicate the failed sub-data frames by means of bitmaps in the first confirmation message frame, and the second communication device can retransmit the failed reception.
  • the sub data frame may indicate the failed sub-data frames by means of bitmaps in the first confirmation message frame, and the second communication device can retransmit the failed reception.
  • the first confirmation message frame may be provided with duration indication information indicating the duration.
  • the duration indication information is used to indicate that the first communication device continues to occupy the duration of the transmission connection for transmitting the first confirmation message frame.
  • the duration of continuing to occupy the transmission connection may be the duration of continuing to occupy the resource of the transmission connection.
  • the duration can be used to inform the third communication device of the duration of continued occupation of the communication connection, which is equivalent to that the third communication device stops competing for the communication connection within the duration, thereby reducing the transmission interference of the communication connection caused by competition, and improving Data transmission quality.
  • the third communication device determines the duration that the first communication device and the second communication device continue to occupy the transmission connection according to the duration indication information, and sets its own network allocation vector (NAV, Network Allocation Vector), keep silent on the transmission connection for this duration, so that the transmission between the first communication device and the second communication device is not interfered.
  • NAV can be understood as a counter, indicating how long the channel will be occupied, and the third communication device can maintain a NAV.
  • the value of NAV continues to decrease over time. Before the value of NAV decreases to zero, the third communication device always considers that the transmission connection is busy and stops contention and data transmission.
  • the duration can be determined according to the data frame reception situation. For example, if the data frame is successfully received, only the first confirmation message frame needs to be transmitted subsequently. Therefore, a shorter duration can be set. If the data frame fails to be received, the first confirmation message frame and the retransmission data frame need to be transmitted subsequently. Therefore, a longer duration can be set. In this way, the duration of continuous occupation of the transmission connection can be flexibly set according to the receiving status of the data frame and subsequent transmission requirements. It can reduce the resource waste caused by occupying the transmission connection when there is no transmission demand, and can also reduce the transmission delay caused by the need to re-compete and use the transmission connection due to insufficient duration, thereby improving transmission efficiency.
  • the second communication device may determine the reception status of the data frame according to the feedback information, and determine the duration of continuing to occupy the transmission connection according to the duration indication information. If the data frame fails to be received, the data frame can be retransmitted within the duration. The transmission resource of the retransmitted data frame is no longer obtained through competition and other methods, thereby improving the transmission efficiency of the retransmitted data frame.
  • the duration of the transmission connection indicated by the first confirmation message frame determines the duration of the transmission connection indicated by the first confirmation message frame.
  • the duration can be set according to the needs of subsequent transmissions, a relatively fixed duration, which can reduce the waste of resources caused by the occupation of the transmission connection when there is no transmission demand, and can also reduce the transmission delay caused by the need to re-compete and use the transmission connection due to insufficient duration. Circumstances, thereby improving transmission efficiency.
  • step 101 may include:
  • the duration indication information is determined, where the duration indication information indicated by the duration indication information includes: the transmission duration of the retransmitted data frame.
  • the duration may include: the transmission duration of the retransmitted data frame.
  • the third communication device can maintain silence on the transmission connection when the first communication device and the second communication device transmit the retransmitted data frame, thereby reducing interference to the transmission connection.
  • the transmission resources required to transmit the retransmitted data frame are pre-occupied.
  • the first communication device or the second communication device may no longer need to obtain transmission resources by means of competition or the like. It is possible to reduce the waiting time caused by separately obtaining transmission resources, reduce the transmission delay, and improve the transmission efficiency.
  • the duration indicated by the duration indication information further includes at least one of the following:
  • the transmission duration of the second determined message frame corresponding to the retransmitted data frame is the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the duration may include: the transmission duration of the first determined message frame, the transmission duration of the retransmitted data frame, and the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the third communication device may maintain silence on the transmission connection when the first communication device and the second communication device transmit the first confirmation message frame, the retransmission data frame, and the second confirmation message frame corresponding to the retransmission data frame, so as to reduce the interference. Interference in the transmission connection.
  • the transmission resources required to transmit the first definite message frame, the retransmitted data frame, and the second definite message frame corresponding to the retransmitted data frame are pre-occupied.
  • the first communication device or the second communication device may no longer need to obtain transmission resources by means of competition or the like. It is possible to reduce the waiting time caused by separately obtaining transmission resources, reduce the transmission delay, and improve the transmission efficiency.
  • the transmission duration of the retransmitted data frame includes: the transmission duration of retransmitting one unicast data frame.
  • the transmission duration of the retransmitted data frame is the transmission duration of retransmission of one unicast data frame.
  • the first determined message frame may further include: retransmission instruction information, and the retransmission instruction information is used to indicate the rebroadcast of the data frame.
  • the second communication device After receiving the first determined message frame, the second communication device retransmits the unicast data frame based on the retransmission instruction information.
  • the retransmission indication information may be located in the Type field of the MAC frame header of the first determined message frame, and/or the Subtype field of the MAC frame header, and/or more data in the MAC frame header (more data) area.
  • the first confirmation message frame is a block confirmation message frame
  • the transmission duration of the retransmitted data frame includes: the transmission duration of the retransmission of the n data blocks that have failed to be received in the continuous data frame.
  • the continuous data frame is divided into multiple data blocks to be sent separately.
  • the data block may be referred to as a data subframe.
  • the first confirmation message frame may be a block confirmation message frame, and a bitmap or the like may be used to indicate the reception status of each data block. For example, "0" can be used in the bitmap to indicate that the data block has failed to be received, and "1" can be used to indicate that the data block has been successfully received.
  • the second communication device After receiving the first definite message frame, the second communication device can only retransmit the data block that failed to be received. In this way, transmission resources can be saved.
  • the transmission duration of the retransmitted data frame may include: the transmission duration of the retransmitted data block, where there may be one or more retransmitted data blocks.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between two adjacent data blocks in the data block.
  • the duration may include the short inter-frame interval between adjacent data blocks.
  • the duration indicated by the duration indication information further includes at least one of the following: a short inter-frame interval between the first determined message frame and the retransmitted data frame; or The short inter-frame interval between the retransmitted data frame and the second determined message frame corresponding to the retransmitted data frame.
  • a short inter-frame interval can be set between the first confirmed message frame and the retransmitted data frame to provide processing time for the second communication device.
  • the first communication device After the first communication device receives the retransmitted data frame and sends the second confirmation message for the retransmitted data frame, the first communication device needs to determine the reception status of the retransmitted data frame, etc. Therefore, the 2. Determine to set a short inter-frame interval between message frames to provide processing time for the first communication device.
  • setting the duration based on the time requirement for the retransmission of the data frame can improve the accuracy of the duration and meet the requirement for the retransmission of the data frame.
  • step 101 may include:
  • the duration indication information is determined, where the duration expression indicated by the duration indication information includes:
  • the 2*ACK represents the transmission duration of the first determined message frame and the transmission duration of the second determined message frame corresponding to the retransmitted data frame
  • the data frame length represents when the data frame is unicast data When frame, the transmission duration of one unicast data frame is retransmitted
  • 2*SIFS represents the interval between two short frames.
  • the duration may be: 2*ACK+unicast data frame transmission duration+2*SIFS length, where 2*ACK represents the first confirmation message frame and the second confirmation message frame 2*SIFS means the interval between two short frames.
  • the two short interframe intervals may be the short interframe interval between the first definite message frame and the retransmitted data frame, and the short interframe interval between the retransmitted data frame and the second definite message frame.
  • step 101 may include:
  • the duration indication information is determined, where the duration expression indicated by the duration indication information includes:
  • the 2*BA represents the transmission time length of the first certain message frame and the transmission time length of the second certain message frame corresponding to the retransmitted data frame
  • the n* data block length represents when the data frame is continuous In the data frame, the transmission duration of the n data blocks that failed to be received in the continuous data frame is retransmitted
  • (1+n)*SIFS represents n+1 short inter-frame intervals.
  • the duration may be: 2*BA+n*data block transmission duration+(1+n)*SIFS, where 2*B represents the first determination
  • the transmission duration of the message frame and the second determined message frame (1+n)*SIFS represents 1+n short inter-frame intervals
  • n*data block transmission duration represents the transmission duration of n data blocks.
  • n represents the number of retransmitted data blocks
  • n can be a positive integer greater than or equal to 1
  • n is less than or equal to the number of data blocks included in a continuous data frame.
  • the n+1 short interframe interval may be the short interframe interval between the first definite message frame and the retransmitted data frame, the short interframe interval between the retransmitted data frame and the second definite message frame, and n retransmissions.
  • the duration indication information includes:
  • the duration field located in the MAC frame header of the first confirmation message frame
  • the length field located in the physical frame header of the first confirmation message frame.
  • the duration can be indicated by the duration field in the MAC frame header and the length field in the physical frame header.
  • the second communication device may determine the duration through the duration field. Retransmit data frames etc. within the duration.
  • the MAC frame header can be parsed, and the duration can be determined by the duration field.
  • the third communication device may set NAV according to the duration indicated by the duration field.
  • the third communication device may first parse the physical frame header after receiving the first confirmation message frame, and determine the duration through the length field. Since the third communication device and the first communication device do not belong to the same BSS, the third communication device no longer analyzes the MAC frame header after analyzing the physical frame header. At this time, the third communication device may set NAV according to the duration indicated by the length field. In this way, by indicating the duration in the duration field and the length field respectively, the adaptability of the first confirmation message frame to communication devices of different BSSs is improved.
  • the third communication device After receiving the first confirmation message frame, the third communication device compares the avoidance duration indicated by its NAV. If the duration is longer than the avoidance duration, it means that the third communication device needs to be silent for a longer period of time. Therefore, the duration can be used to update the avoidance duration. duration.
  • the duration is less than or equal to the avoidance duration, it means that the duration of the silence of the third communication device exceeds the time claimed by the first user equipment and the second user equipment, and therefore, the current NAV can be maintained.
  • step 101 may include: when the data frame is successfully received, making the duration indicated by the duration indication information 0.
  • the duration can be set to 0, indicating that the first communication device and the second communication device no longer occupy the transmission connection.
  • this exemplary embodiment provides a data transmission method.
  • the data transmission method may be applied to a second communication device of wireless communication.
  • the data transmission method may include:
  • Step 201 Receive a first confirmation message frame
  • Step 202 Determine the receiving status of the data frame in the multi-transport connection transmission according to the feedback information in the first confirmation message frame;
  • Step 203 Determine the duration of continuing to occupy the transmission connection according to the duration indication information in the first confirmation message frame, where the duration indication information is based on the reception status of the data frame.
  • the wireless communication may be Wi-Fi communication using standards such as IEEE802.11be; the first communication device, the second communication device, and the third communication device may be wireless stations (STA, STAtion) or wireless access in Wi-Fi communication. Access point (AP, Access Point), etc.
  • the data frame may be a data frame that is separately transmitted in each of the multiple transmission connections.
  • the data frame may be a physical layer protocol data frame (PPDU, Physical Layer Protocol Data Unit).
  • the first communication device may be the receiving end of the data frame
  • the second communication device may be the sending end of the data frame
  • the third communication device may be other communication devices other than the receiving end of the data frame and the sending end of the data frame.
  • Data frames may include unicast data frames and continuous data frames.
  • Multi-transmission connection transmission can be a transmission that occupies multiple transmission frequency bands.
  • the transmission frequency band can be the Wi-Fi working frequency band, such as 2.4GHz, 5.8GHz and 6-7GHz, etc.; it can also be the frequency range of the bandwidth occupied by the transmission connection. Among them, the frequency range of the bandwidth occupied by each transmission connection may belong to the same Wi-Fi working frequency band, or may belong to different Wi-Fi working frequency bands.
  • the second communication device may use one of the multiple transmission connections to send a data frame, which is received by the first communication device.
  • the first communication device After the first communication device receives the data frame, it can determine the reception status of the data frame by means of parity check, cyclic redundancy check CRC, etc., and feedback the reception status of the data frame by sending the first confirmation message frame to the second communication device .
  • the first confirmation message frame may be an acknowledgement (ACK) frame or a non-acknowledgement (NACK) frame for the unicast data frame.
  • the first confirmation message frame may be a Block-ACK (Block-ACK) frame for the continuous data frame or the like.
  • the first confirmation message frame may carry feedback information, which is used to indicate the reception of the data frame.
  • the first confirmation message frame may use 1 bit or more bits to indicate the success or failure of the unicast data frame reception, for example, "0" may be used to indicate the failure of the data frame reception.
  • the first confirmation message frame can use a bitmap to indicate the reception of each data block in the continuous data frame.
  • “0” can be used to indicate that the data block has failed to be received, and “1” is used to indicate The data block is successfully received; “1” can also be used to indicate that the data block has failed to be received, and “0” can be used to indicate that the data block is successfully received.
  • the first communication device may indicate the failure of the reception of the data frame by sending the first confirmation message frame, and the second communication device may retransmit the data frame.
  • the second communication device may retransmit the unicast data frame.
  • the first communication device can indicate the failed sub-data frames by means of bitmaps in the first confirmation message frame, and the second communication device can retransmit the failed reception.
  • the sub data frame may indicate the failed sub-data frames by means of bitmaps in the first confirmation message frame, and the second communication device can retransmit the failed reception.
  • the first confirmation message frame may be provided with duration indication information indicating the duration.
  • the duration indication information is used to indicate that the first communication device continues to occupy the duration of the transmission connection for transmitting the first confirmation message frame.
  • the duration of continuing to occupy the transmission connection may be the duration of continuing to occupy the transmission connection resource, which is equivalent to that the third communication device stops competing for the communication connection within the duration, thereby reducing the transmission interference of the communication connection caused by competition. Improve the quality of data transmission.
  • the duration may be used to inform the third communication device of the duration of the continued occupation of the communication connection.
  • the third communication device determines the duration for the first communication device and the second communication device to continue occupying the transmission connection according to the duration indication information, and sets its own NAV according to the duration, and transmits within the duration
  • the connection remains silent, so that the transmission between the first communication device and the second communication device is not disturbed.
  • NAV can be understood as a counter, indicating how long the channel will be occupied, and the third communication device can maintain a NAV.
  • the value of NAV continues to decrease over time. Before the value of NAV decreases to zero, the third communication device always considers that the transmission connection is busy and stops contention and data transmission.
  • the duration can be determined according to the data frame reception situation. For example, if the data frame is successfully received, only the first confirmation message frame needs to be transmitted subsequently. Therefore, a shorter duration can be set. If the data frame fails to be received, the first confirmation message frame and the retransmission data frame need to be transmitted subsequently. Therefore, a longer duration can be set. In this way, the duration of continuous occupation of the transmission connection can be flexibly set according to the receiving status of the data frame and subsequent transmission requirements. It can reduce the resource waste caused by occupying the transmission connection when there is no transmission demand, and can also reduce the transmission delay caused by the need to re-compete and use the transmission connection due to insufficient duration, thereby improving transmission efficiency.
  • the second communication device may determine the reception status of the data frame according to the feedback information, and determine the duration of continuing to occupy the transmission connection according to the duration indication information. If the data frame fails to be received, the data frame can be retransmitted within the duration. The transmission resource of the retransmitted data frame is no longer obtained through competition and other methods, thereby improving the transmission efficiency of the retransmitted data frame.
  • the third communication device After receiving the first confirmation message frame, the third communication device determines the duration that the first communication device and the second communication device continue to occupy the transmission connection according to the duration indication information, and sets its own NAV according to the duration, and transmits the connection within the duration. Keep silent so that the transmission between the first communication device and the second communication device is not disturbed.
  • NAV can be understood as a counter, indicating how long the channel will be occupied, and the third communication device can maintain a NAV. The value of NAV continues to decrease over time. Before the value of NAV decreases to zero, the third communication device always considers that the transmission connection is busy and stops contention and data transmission.
  • the duration of the transmission connection indicated by the first confirmation message frame determines the duration of the transmission connection indicated by the first confirmation message frame.
  • the duration can be set according to the needs of subsequent transmissions, a relatively fixed duration, which can reduce the waste of resources caused by the occupation of the transmission connection when there is no transmission demand, and can also reduce the transmission delay caused by the need to re-compete and use the transmission connection due to insufficient duration. Circumstances, thereby improving transmission efficiency.
  • the duration indicated by the duration indication information includes: the transmission duration of the retransmitted data frame.
  • the duration may include: the transmission duration of the retransmitted data frame.
  • the third communication device can maintain silence on the transmission connection when the first communication device and the second communication device transmit the retransmitted data frame, thereby reducing interference to the transmission connection.
  • the transmission resources required to transmit the retransmitted data frame are pre-occupied.
  • the first communication device or the second communication device may no longer need to obtain transmission resources by means of competition or the like. It is possible to reduce the waiting time caused by separately obtaining transmission resources, reduce the transmission delay, and improve the transmission efficiency.
  • the duration indicated by the duration indication information further includes at least one of the following:
  • the transmission duration of the second determined message frame corresponding to the retransmitted data frame is the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the duration may include: the transmission duration of the first determined message frame, the transmission duration of the retransmitted data frame, and the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the third communication device may maintain silence on the transmission connection when the first communication device and the second communication device transmit the first confirmation message frame, the retransmission data frame, and the second confirmation message frame corresponding to the retransmission data frame, so as to reduce the interference. Interference in the transmission connection.
  • the transmission resources required to transmit the first definite message frame, the retransmitted data frame, and the second definite message frame corresponding to the retransmitted data frame are pre-occupied.
  • the first communication device or the second communication device may no longer need to obtain transmission resources by means of competition or the like. It is possible to reduce the waiting time caused by separately obtaining transmission resources, reduce the transmission delay, and improve the transmission efficiency.
  • the transmission duration of the retransmitted data frame includes: the transmission duration of retransmitting one unicast data frame.
  • the transmission duration of the retransmitted data frame is the transmission duration of retransmission of one unicast data frame.
  • the duration may be: 2*ACK+unicast data frame transmission duration+2*SIFS length, where 2*ACK represents the first confirmation message frame and the second confirmation message frame 2*SIFS means the interval between two short frames.
  • the first determined message frame may further include: retransmission instruction information, and the retransmission instruction information is used to indicate the rebroadcast of the data frame.
  • the second communication device After receiving the first determined message frame, the second communication device retransmits the unicast data frame based on the retransmission instruction information.
  • the retransmission indication information may be located in the Type field of the MAC frame header of the first determined message frame, and/or the Subtype field of the MAC frame header, and/or more data in the MAC frame header (more data) area.
  • the first confirmation message frame is a block confirmation message frame
  • the transmission duration of the retransmitted data frame includes: the transmission duration of the retransmission of the n data blocks that have failed to be received in the continuous data frame.
  • the continuous data frame is divided into multiple data blocks to be sent separately.
  • the data block may be referred to as a data subframe.
  • the first confirmation message frame may be a block confirmation message frame, and a bitmap or the like may be used to indicate the reception status of each data block. For example, "0" can be used in the bitmap to indicate that the data block has failed to be received, and "1" can be used to indicate that the data block has been successfully received.
  • the second communication device After receiving the first definite message frame, the second communication device can only retransmit the data block that failed to be received. In this way, transmission resources can be saved.
  • the transmission duration of the retransmitted data frame may include: the transmission duration of the retransmitted data block, where there may be one or more retransmitted data blocks.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between two adjacent data blocks in the data block.
  • the duration may include the short inter-frame interval between adjacent data blocks.
  • the duration may be: 2*BA+n*data block transmission duration+(1+n)*SIFS, where 2*B Represents the transmission duration of the first definite message frame and the second definite message frame, (1+n)*SIFS denotes 1+n short inter-frame intervals, and n*data block transmission duration denotes the transmission duration of n data blocks.
  • n represents the number of retransmitted data blocks
  • n can be a positive integer greater than or equal to 1
  • n is less than or equal to the number of data blocks included in a continuous data frame.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between the first determined message frame and the retransmitted data frame; and the retransmitted data frame The second determining the short inter-frame interval between message frames corresponding to the retransmitted data frame.
  • a short inter-frame interval can be set between the first confirmed message frame and the retransmitted data frame to provide processing time for the second communication device.
  • the first communication device After the first communication device receives the retransmitted data frame and sends the second confirmation message for the retransmitted data frame, the first communication device needs to determine the reception status of the retransmitted data frame, etc. Therefore, the 2. Determine to set a short inter-frame interval between message frames to provide processing time for the first communication device.
  • setting the duration based on the time requirement for the retransmission of the data frame can improve the accuracy of the duration and meet the requirement for the retransmission of the data frame.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*ACK represents the transmission duration of the first determined message frame and the transmission duration of the second determined message frame corresponding to the retransmitted data frame
  • the data frame length represents when the data frame is unicast data When frame, the transmission duration of one unicast data frame is retransmitted
  • 2*SIFS represents the interval between two short frames.
  • the duration may be: 2*ACK+unicast data frame transmission duration+2*SIFS length, where 2*ACK represents the first confirmation message frame and the second confirmation message frame 2*SIFS means the interval between two short frames.
  • the two short inter-frame intervals may be the short inter-frame interval between the first determined message frame and the retransmitted data frame, and the short inter-frame interval between the retransmitted data frame and the second determined message frame.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*BA represents the transmission time length of the first certain message frame and the transmission time length of the second certain message frame corresponding to the retransmitted data frame
  • the n* data block length represents when the data frame is continuous In the data frame, the transmission duration of the n data blocks that failed to be received in the continuous data frame is retransmitted
  • (1+n)*SIFS represents n+1 short inter-frame intervals.
  • the duration may be: 2*BA+n*data block transmission duration+(1+n)*SIFS, where 2*B represents the first determination
  • the transmission duration of the message frame and the second determined message frame (1+n)*SIFS represents 1+n short inter-frame intervals
  • n*data block transmission duration represents the transmission duration of n data blocks.
  • n represents the number of retransmitted data blocks
  • n can be a positive integer greater than or equal to 1
  • n is less than or equal to the number of data blocks included in a continuous data frame.
  • the n+1 short interframe interval may be the short interframe interval between the first definite message frame and the retransmitted data frame, the short interframe interval between the retransmitted data frame and the second definite message frame, and n retransmissions.
  • step 203 may include:
  • the duration field in the media access control MAC frame header of the first confirmation message frame determine the duration for continuing to occupy the transmission connection.
  • the duration can be indicated by the duration field in the MAC frame header and the length field in the physical frame header.
  • the second communication device may determine the duration through the duration field. Retransmit data frames etc. within the duration.
  • the MAC frame header can be parsed, and the duration can be determined by the duration field.
  • the third communication device may set NAV according to the duration indicated by the duration field.
  • the third communication device may first parse the physical frame header after receiving the first confirmation message frame, and determine the duration through the length field. Since the third communication device and the first communication device do not belong to the same BSS, the third communication device no longer analyzes the MAC frame header after analyzing the physical frame header. At this time, the third communication device may set NAV according to the duration indicated by the length field. In this way, by indicating the duration in the duration field and the length field respectively, the adaptability of the first confirmation message frame to communication devices of different BSSs is improved.
  • the third communication device After receiving the first confirmation message frame, the third communication device compares the avoidance duration indicated by its NAV. If the duration is longer than the avoidance duration, it means that the third communication device needs to be silent for a longer period of time. Therefore, the duration can be used to update the avoidance duration. duration.
  • the duration is less than or equal to the avoidance duration, it means that the duration of the silence of the third communication device exceeds the time claimed by the first user equipment and the second user equipment, and therefore, the current NAV can be maintained.
  • this exemplary embodiment provides a data transmission method.
  • the data transmission method may be applied to a second communication device of wireless communication.
  • the data transmission method may include:
  • Step 301 Receive the first confirmation message frame
  • Step 302 Set a network allocation vector (NAV, Network Allocation Vector) according to the duration of continuing to occupy the transmission connection indicated by the duration indication information in the first confirmation message frame, where the duration indication information is based on multiple Receiving the first confirmation message frame of the reception status of the data frame in the transmission connection transmission;
  • NAV Network Allocation Vector
  • the wireless communication may be Wi-Fi communication using standards such as IEEE802.11be; the first communication device, the second communication device, and the third communication device may be wireless stations (STA, STAtion) or wireless access in Wi-Fi communication. Access point (AP, Access Point), etc.
  • the data frame may be a data frame that is separately transmitted in each of the multiple transmission connections.
  • the data frame may be a physical layer protocol data frame (PPDU, Physical Layer Protocol Data Unit).
  • the first communication device may be the receiving end of the data frame
  • the second communication device may be the sending end of the data frame
  • the third communication device may be other communication devices other than the receiving end of the data frame and the sending end of the data frame.
  • Data frames may include unicast data frames and continuous data frames.
  • Multi-transmission connection transmission can be a transmission that occupies multiple transmission frequency bands.
  • the transmission frequency band can be the Wi-Fi working frequency band, such as 2.4GHz, 5.8GHz and 6-7GHz, etc.; it can also be the frequency range of the bandwidth occupied by the transmission connection. Among them, the frequency range of the bandwidth occupied by each transmission connection may belong to the same Wi-Fi working frequency band, or may belong to different Wi-Fi working frequency bands.
  • the second communication device may use one of the multiple transmission connections to send a data frame, which is received by the first communication device.
  • the first communication device After the first communication device receives the data frame, it can determine the reception status of the data frame by means of parity check, cyclic redundancy check CRC, etc., and feedback the reception status of the data frame by sending the first confirmation message frame to the second communication device .
  • the first confirmation message frame may be an acknowledgement (ACK) frame or a non-acknowledgement (NACK) frame for the unicast data frame.
  • the first confirmation message frame may be a Block-ACK (Block-ACK) frame for the continuous data frame or the like.
  • the first confirmation message frame may carry feedback information, which is used to indicate the reception of the data frame.
  • the first confirmation message frame may use 1 bit or more bits to indicate the success or failure of the unicast data frame reception, for example, "0" may be used to indicate the failure of the data frame reception.
  • the first confirmation message frame can use a bitmap to indicate the reception of each data block in the continuous data frame.
  • “0” can be used to indicate that the data block has failed to be received, and “1” is used to indicate The data block is successfully received; “1” can also be used to indicate that the data block has failed to be received, and “0” can be used to indicate that the data block is successfully received.
  • the first communication device may indicate the failure of the reception of the data frame by sending the first confirmation message frame, and the second communication device may retransmit the data frame.
  • the second communication device may retransmit the unicast data frame.
  • the first communication device can indicate the failed sub-data frames by means of bitmaps in the first confirmation message frame, and the second communication device can retransmit the failed reception.
  • the sub data frame may indicate the failed sub-data frames by means of bitmaps in the first confirmation message frame, and the second communication device can retransmit the failed reception.
  • the first confirmation message frame may be provided with duration indication information indicating the duration.
  • the duration indication information is used to indicate that the first communication device continues to occupy the duration of the transmission connection for transmitting the first confirmation message frame.
  • the duration of continuing to occupy the transmission connection may be the duration of continuing to occupy the transmission connection resource, which is equivalent to that the third communication device stops competing for the communication connection within the duration, thereby reducing the transmission interference of the communication connection caused by competition. Improve the quality of data transmission.
  • the duration may be used to inform the third communication device of the duration of the continued occupation of the communication connection.
  • the third communication device determines the duration for the first communication device and the second communication device to continue occupying the transmission connection according to the duration indication information, and sets its own NAV according to the duration, and transmits within the duration
  • the connection remains silent, so that the transmission between the first communication device and the second communication device is not disturbed.
  • NAV can be understood as a counter, indicating how long the channel will be occupied, and the third communication device can maintain a NAV.
  • the value of NAV continues to decrease over time. Before the value of NAV decreases to zero, the third communication device always considers that the transmission connection is busy and stops contention and data transmission.
  • the duration can be determined according to the data frame reception situation. For example, if the data frame is successfully received, only the first confirmation message frame needs to be transmitted subsequently. Therefore, a shorter duration can be set. If the data frame fails to be received, the first confirmation message frame and the retransmission data frame need to be transmitted subsequently. Therefore, a longer duration can be set. In this way, the duration of continuous occupation of the transmission connection can be flexibly set according to the receiving status of the data frame and subsequent transmission requirements. It can reduce the resource waste caused by occupying the transmission connection when there is no transmission demand, and can also reduce the transmission delay caused by the need to re-compete and use the transmission connection due to insufficient duration, thereby improving transmission efficiency.
  • the second communication device may determine the reception status of the data frame according to the feedback information, and determine the duration of continuing to occupy the transmission connection according to the duration indication information. If the data frame fails to be received, the data frame can be retransmitted within the duration. The transmission resource of the retransmitted data frame is no longer obtained through competition and other methods, thereby improving the transmission efficiency of the retransmitted data frame. .
  • the third communication device After receiving the first confirmation message frame, the third communication device determines the duration that the first communication device and the second communication device continue to occupy the transmission connection according to the duration indication information, and sets its own NAV according to the duration, and transmits the connection within the duration. Keep silent so that the transmission between the first communication device and the second communication device is not disturbed.
  • NAV can be understood as a counter, indicating how long the channel will be occupied, and the third communication device can maintain a NAV. The value of NAV continues to decrease over time. Before the value of NAV decreases to zero, the third communication device always considers that the transmission connection is busy and stops contention and data transmission.
  • the duration of the transmission connection indicated by the first confirmation message frame determines the duration of the transmission connection indicated by the first confirmation message frame.
  • the duration can be set according to the needs of subsequent transmissions, a relatively fixed duration, which can reduce the waste of resources caused by the occupation of the transmission connection when there is no transmission demand, and can also reduce the transmission delay caused by the need to re-compete and use the transmission connection due to insufficient duration. Circumstances, thereby improving transmission efficiency.
  • the duration indicated by the duration indication information includes: the transmission duration of the retransmitted data frame.
  • the duration may include: the transmission duration of the retransmitted data frame.
  • the third communication device can maintain silence on the transmission connection when the first communication device and the second communication device transmit the retransmitted data frame, thereby reducing interference to the transmission connection.
  • the transmission resources required to transmit the retransmitted data frame are pre-occupied.
  • the first communication device or the second communication device may no longer need to obtain transmission resources by means of competition or the like. It is possible to reduce the waiting time caused by separately obtaining transmission resources, reduce the transmission delay, and improve the transmission efficiency.
  • the duration indicated by the duration indication information further includes at least one of the following:
  • the transmission duration of the second determined message frame corresponding to the retransmitted data frame is the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the duration may include: the transmission duration of the first determined message frame, the transmission duration of the retransmitted data frame, and the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the third communication device may maintain silence on the transmission connection when the first communication device and the second communication device transmit the first confirmation message frame, the retransmission data frame, and the second confirmation message frame corresponding to the retransmission data frame, so as to reduce the interference. Interference in the transmission connection.
  • the transmission resources required to transmit the first definite message frame, the retransmitted data frame, and the second definite message frame corresponding to the retransmitted data frame are pre-occupied.
  • the first communication device or the second communication device may no longer need to obtain transmission resources by means of competition or the like. It is possible to reduce the waiting time caused by separately obtaining transmission resources, reduce the transmission delay, and improve the transmission efficiency.
  • the transmission duration of the retransmitted data frame includes: the transmission duration of retransmitting one unicast data frame.
  • the transmission duration of the retransmitted data frame is the transmission duration of retransmission of one unicast data frame.
  • the duration may be: 2*ACK+unicast data frame transmission duration+2*SIFS length, where 2*ACK represents the first confirmation message frame and the second confirmation message frame 2*SIFS means the interval between two short frames.
  • the first determined message frame may further include: retransmission instruction information, and the retransmission instruction information is used to indicate the rebroadcast of the data frame.
  • the second communication device After receiving the first determined message frame, the second communication device retransmits the unicast data frame based on the retransmission instruction information.
  • the retransmission indication information may be located in the Type field of the MAC frame header of the first determined message frame, and/or the Subtype field of the MAC frame header, and/or more data in the MAC frame header (more data) area.
  • the first confirmation message frame is a block confirmation message frame
  • the transmission duration of the retransmitted data frame includes: the transmission duration of the retransmission of the n data blocks that have failed to be received in the continuous data frame.
  • the continuous data frame is divided into multiple data blocks to be sent separately.
  • the data block may be referred to as a data subframe.
  • the first confirmation message frame may be a block confirmation message frame, and a bitmap or the like may be used to indicate the reception status of each data block. For example, "0" can be used in the bitmap to indicate that the data block has failed to be received, and "1" can be used to indicate that the data block has been successfully received.
  • the second communication device After receiving the first definite message frame, the second communication device can only retransmit the data block that failed to be received. In this way, transmission resources can be saved.
  • the transmission duration of the retransmitted data frame may include: the transmission duration of the retransmitted data block, where there may be one or more retransmitted data blocks.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between two adjacent data blocks in the data block.
  • the duration may include the short inter-frame interval between adjacent data blocks.
  • the duration may be: 2*BA+n*data block transmission duration+(1+n)*SIFS, where 2*B Represents the transmission duration of the first definite message frame and the second definite message frame, (1+n)*SIFS denotes 1+n short inter-frame intervals, and n*data block transmission duration denotes the transmission duration of n data blocks.
  • n represents the number of retransmitted data blocks
  • n can be a positive integer greater than or equal to 1
  • n is less than or equal to the number of data blocks included in a continuous data frame.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between the first determined message frame and the retransmitted data frame; and the retransmitted data frame The second determining the short inter-frame interval between message frames corresponding to the retransmitted data frame.
  • a short inter-frame interval can be set between the first confirmed message frame and the retransmitted data frame to provide processing time for the second communication device.
  • the first communication device After the first communication device receives the retransmitted data frame and sends the second confirmation message for the retransmitted data frame, the first communication device needs to determine the reception status of the retransmitted data frame, etc. Therefore, the 2. Determine to set a short inter-frame interval between message frames to provide processing time for the first communication device.
  • setting the duration based on the time requirement for the retransmission of the data frame can improve the accuracy of the duration and meet the requirement for the retransmission of the data frame.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*ACK represents the transmission duration of the first determined message frame and the transmission duration of the second determined message frame corresponding to the retransmitted data frame
  • the data frame length represents when the data frame is unicast data When frame, the transmission duration of one unicast data frame is retransmitted
  • 2*SIFS represents the interval between two short frames.
  • the duration may be: 2*ACK+unicast data frame transmission duration+2*SIFS length, where 2*ACK represents the first confirmation message frame and the second confirmation message frame 2*SIFS means the interval between two short frames.
  • the two short inter-frame intervals may be the short inter-frame interval between the first determined message frame and the retransmitted data frame, and the short inter-frame interval between the retransmitted data frame and the second determined message frame.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*BA represents the transmission time length of the first certain message frame and the transmission time length of the second certain message frame corresponding to the retransmitted data frame
  • the n* data block length represents when the data frame is continuous When a data frame is used, the transmission duration of the n data blocks that failed to be received in the continuous data frame is retransmitted
  • (1+n)*SIFS represents n+1 short inter-frame intervals
  • the duration may be: 2*BA+n*data block transmission duration+(1+n)*SIFS, where 2*B represents the first determination
  • the transmission duration of the message frame and the second determined message frame (1+n)*SIFS represents 1+n short inter-frame intervals
  • n*data block transmission duration represents the transmission duration of n data blocks.
  • n represents the number of retransmitted data blocks
  • n can be a positive integer greater than or equal to 1
  • n is less than or equal to the number of data blocks included in a continuous data frame.
  • the n+1 short interframe interval may be the short interframe interval between the first definite message frame and the retransmitted data frame, the short interframe interval between the retransmitted data frame and the second definite message frame, and n retransmissions.
  • step 302 may include:
  • the NAV is set according to the duration of continuing to occupy the transmission connection as indicated by the length field in the physical frame header of the first confirmation message frame.
  • the duration can be indicated by the duration field in the MAC frame header and the length field in the physical frame header.
  • the second communication device may determine the duration through the duration field. Retransmit data frames etc. within the duration.
  • the MAC frame header can be parsed, and the duration can be determined through the duration field.
  • the third communication device may set NAV according to the duration indicated by the duration field.
  • the third communication device may first parse the physical frame header after receiving the first confirmation message frame, and determine the duration through the length field. Since the third communication device and the first communication device do not belong to the same BSS, the third communication device no longer analyzes the MAC frame header after analyzing the physical frame header. At this time, the third communication device may set NAV according to the duration indicated by the length field. In this way, by indicating the duration in the duration field and the length field respectively, the adaptability of the first confirmation message frame to communication devices of different BSSs is improved.
  • the duration is less than or equal to the avoidance duration, it means that the duration of the silence of the third communication device exceeds the time claimed by the first user equipment and the second user equipment, and therefore, the current NAV can be maintained.
  • step 302 may include
  • the duration of avoidance is updated using the duration.
  • the third communication device After receiving the first confirmation message frame, the third communication device compares the avoidance duration indicated by its NAV. If the duration is longer than the avoidance duration, it means that the third communication device needs to be silent for a longer period of time. Therefore, the duration can be used to update the avoidance duration. duration.
  • the duration is less than or equal to the avoidance duration, it means that the duration of the silence of the third communication device exceeds the time claimed by the first user equipment and the second user equipment, and therefore, the current NAV can be maintained.
  • step 302 may include:
  • the NAV In response to the duration of time being less than or equal to the avoidance time period in which the NAV instructs to keep silent on the transmission connection, the NAV is maintained.
  • the present disclosure also provides a data transmission method.
  • a data transmission method when the data frame receiving end responds to receiving the data frame from the data frame sending end, an acknowledgement (ACK) frame is sent to the data frame sending end, so that the data frame sending end can determine Whether the data frame is received correctly.
  • ACK acknowledgement
  • the duration field in the first ACK frame is set as:
  • the transmission duration of a unicast data frame represents the duration of retransmission of the unicast frame
  • 2*ACK represents the transmission duration of the first ACK frame
  • 2*SIFS represents the short interframe interval between the retransmitted unicast data frame and the above-mentioned first ACK frame and second ACK respectively.
  • the data frame receiving end may use a block acknowledgment (BA, Block ACK) for feedback.
  • BA block acknowledgment
  • Block ACK Block acknowledgment
  • the data frame receiving end determines that the continuous data frame has not been received correctly, it sets the duration field in the first block acknowledgment (BA) frame to:
  • n*data block length represents the transmission time length of n data blocks that failed to be received in the retransmission of the continuous data frame, n is the number of retransmitted data blocks; 2*BA represents the transmission time length of the first BA frame, and retransmission The transmission duration of the second BA corresponding to the transmitted n data blocks; 2*SIFS represents the short interframe interval between the retransmitted n data blocks and the first BA frame and the second BA, respectively.
  • the data transmission method provided by the example of the present invention includes: the receiving end of the data frame sends an Acknowledge (ACK) frame to the sender of the data frame, if the data frame is not received correctly, the duration field of the returned ACK frame Set as: 2*ACK transmission duration + 2*SIFS+ data frame transmission duration, where 2*ACK transmission duration includes: the transmission duration of the ACK frame itself and the transmission duration of the ACK frame of the retransmitted data frame.
  • the transmission duration of the data frame indicates the weight
  • SIFS stands for short inter-frame interval.
  • the receiving end of the data frame feeds back the ACK frame. If the data frame is not received correctly, the duration field of the ACK frame is set to: 2*ACK transmission duration + data frame length transmission duration + 2*SIFS.
  • the duration field of the feedback block confirmation frame is set to: 2*BA+n*data frame length+(1+n)*SIFS , Where n represents the number of data frames that need to be retransmitted,
  • n is the same as the number of bits set to "0" in the bitmap bitmap in BA.
  • the NAV After receiving the ACK frame, other stations set their own NAV according to the duration field of the ACK frame. If the time length identified by the duration field in the ACK/BA frame is less than the time length set by the current NAV, the NAV will remain unchanged. For example, the time length identified by the duration field in the ACK/BA frame is greater than the time length set by the previous NAV , The time length of its NAV is updated to be the same as the time length of the duration field.
  • the type (type) and subtype (subtype) fields of the MAC frame header of the ACK/Block ACK frame respectively identify it as a new ACK frame format, and identify that there is a retransmission data frame after the ACK/Block ACK frame is sent.
  • the embodiment of the present invention also provides a data transmission device, which is applied to the first communication device of wireless communication.
  • the data transmission device 100 includes: a first determining module 110 and a sending module 120, wherein,
  • the first determining module 110 is configured to determine the duration indication information according to the receiving status of the data frame in the multi-transport connection transmission, where the duration indication information is used to indicate the duration of the continuous occupation of the transmission connection;
  • the sending module 120 is configured to send a first confirmation message frame, where the first confirmation message frame includes: feedback information of the reception status and the duration indication information.
  • the first determining module 110 includes:
  • the first determining submodule 111 is configured to determine the duration indication information when the data frame fails to be received, wherein the duration indication information indicated by the duration indication information includes: the transmission duration of the retransmitted data frame.
  • the duration indicated by the duration indication information further includes at least one of the following:
  • the transmission duration of the second determined message frame corresponding to the retransmitted data frame is the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the transmission duration of the retransmitted data frame includes: the transmission duration of retransmitting one unicast data frame.
  • the first confirmation message frame is a block confirmation message frame
  • the transmission duration of the retransmitted data frame includes: the transmission duration of the retransmission of the n data blocks that have failed to be received in the continuous data frame.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between two adjacent data blocks in the data block.
  • the duration indicated by the duration indication information further includes at least one of the following: a short inter-frame interval between the first determined message frame and the retransmitted data frame; or The short inter-frame interval between the retransmitted data frame and the second determined message frame corresponding to the retransmitted data frame.
  • the first determining module 110 includes:
  • the second determining submodule 112 is configured to determine the duration indication information when the data frame fails to be received, wherein the duration expression indicated by the duration indication information includes:
  • the 2*ACK represents the transmission duration of the first determined message frame and the transmission duration of the second determined message frame corresponding to the retransmitted data frame
  • the data frame length represents when the data frame is unicast data When frame, the transmission duration of one unicast data frame is retransmitted
  • 2*SIFS represents the interval between two short frames.
  • the first determining module 110 includes:
  • the third determining submodule 113 is configured to determine the duration indication information when the data frame fails to be received, wherein the duration expression indicated by the duration indication information includes:
  • the 2*BA represents the transmission time length of the first certain message frame and the transmission time length of the second certain message frame corresponding to the retransmitted data frame
  • the n* data block length represents when the data frame is continuous In the data frame, the transmission duration of the n data blocks that failed to be received in the continuous data frame is retransmitted
  • (1+n)*SIFS represents n+1 short inter-frame intervals.
  • the duration indication information includes:
  • the duration field located in the MAC frame header of the first confirmation message frame
  • the length field located in the physical frame header of the first confirmation message frame.
  • the first determining module 110 includes:
  • the fourth determining submodule 114 is configured to make the duration indicated by the duration indication information 0 when the data frame is successfully received.
  • the embodiment of the present invention also provides a data transmission device, which is applied to a second communication device of wireless communication.
  • the data transmission device 200 includes: a first receiving module 210, a second determining module 220, and a third determining module.
  • Module 230 of which,
  • the first receiving module 210 is configured to receive a first confirmation message frame
  • the second determining module 220 is configured to determine the receiving status of the data frame in the multi-transport connection transmission according to the feedback information in the first confirmation message frame;
  • the third determining module 230 is configured to determine the duration of continuing to occupy the transmission connection according to the duration indication information in the first confirmation message frame, wherein the duration indication information is based on the data frame The receiving status.
  • the duration indicated by the duration indication information includes: the transmission duration of the retransmitted data frame.
  • the duration indicated by the duration indication information further includes at least one of the following:
  • the transmission duration of the second determined message frame corresponding to the retransmitted data frame is the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the transmission duration of the retransmitted data frame includes: the transmission duration of retransmitting one unicast data frame.
  • the first confirmation message frame is a block confirmation message frame
  • the transmission duration of the retransmitted data frame includes: the transmission duration of the retransmission of the n data blocks that have failed to be received in the continuous data frame.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between two adjacent data blocks in the data block.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between the first determined message frame and the retransmitted data frame; and the retransmitted data frame The second determining the short inter-frame interval between message frames corresponding to the retransmitted data frame.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*ACK represents the transmission duration of the first determined message frame and the transmission duration of the second determined message frame corresponding to the retransmitted data frame
  • the data frame length represents when the data frame is unicast data When frame, the transmission duration of one unicast data frame is retransmitted
  • 2*SIFS represents the interval between two short frames.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*BA represents the transmission time length of the first certain message frame and the transmission time length of the second certain message frame corresponding to the retransmitted data frame
  • the n* data block length represents when the data frame is continuous In the data frame, the transmission duration of the n data blocks that failed to be received in the continuous data frame is retransmitted
  • (1+n)*SIFS represents n+1 short inter-frame intervals.
  • the third determining module 230 includes:
  • the fifth determining submodule 231 is configured to determine the duration of continuing to occupy the transmission connection according to the indication of the duration field in the media access control MAC frame header of the first confirmation message frame.
  • the embodiment of the present invention also provides a data transmission device, which is applied to a third communication device for wireless communication.
  • the data transmission device 300 includes: a second receiving module 310 and a setting module 320, wherein:
  • the second receiving module 310 is configured to receive a first confirmation message frame
  • the setting module 320 is configured to set a network allocation vector NAV according to the duration of continuing to occupy the transmission connection indicated by the duration indication information in the first confirmation message frame, wherein the duration indication information is based on multiple transmissions. The status of the reception of data frames during connection transmission.
  • the duration indicated by the duration indication information includes: the transmission duration of the retransmitted data frame.
  • the duration indicated by the duration indication information further includes at least one of the following:
  • the transmission duration of the second determined message frame corresponding to the retransmitted data frame is the transmission duration of the second determined message frame corresponding to the retransmitted data frame.
  • the transmission duration of the retransmitted data frame includes: the transmission duration of retransmitting one unicast data frame.
  • the first confirmation message frame is a block confirmation message frame
  • the transmission duration of the retransmitted data frame includes: the transmission duration of the retransmission of the n data blocks that have failed to be received in the continuous data frame.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between two adjacent data blocks in the data block.
  • the duration indicated by the duration indication information further includes: a short inter-frame interval between the first determined message frame and the retransmitted data frame; and the retransmitted data frame The second determining the short inter-frame interval between message frames corresponding to the retransmitted data frame.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*ACK represents the transmission duration of the first determined message frame and the transmission duration of the second determined message frame corresponding to the retransmitted data frame
  • the data frame length represents when the data frame is unicast data When frame, the transmission duration of one unicast data frame is retransmitted
  • 2*SIFS represents the interval between two short frames.
  • the expression of the duration indicated by the duration indication information includes:
  • the 2*BA represents the transmission time length of the first certain message frame and the transmission time length of the second certain message frame corresponding to the retransmitted data frame
  • the n* data block length represents when the data frame is continuous In the data frame, the transmission duration of the n data blocks that failed to be received in the continuous data frame is retransmitted
  • (1+n)*SIFS represents n+1 short inter-frame intervals.
  • the setting module 320 includes:
  • the first setting submodule 321 is configured to set the NAV according to the duration of the continuous occupation of the transmission connection indicated by the duration field in the media access control MAC frame header of the first confirmation message frame
  • the second setting submodule 322 is configured to set the NAV according to the duration of the continuous occupation of the transmission connection indicated by the length field in the physical frame header of the first confirmation message frame.
  • the setting module 320 includes:
  • the third setting submodule 323 is configured to update the avoidance duration by using the duration in response to the duration being greater than the avoidance duration for keeping silent on the transmission connection indicated by the NAV.
  • the setting module 320 includes:
  • the fourth setting sub-module 324 is configured to maintain the NAV in response to the avoidance duration in which the duration is less than or equal to the NAV instruction to keep silent in the transmission connection.
  • the first determining module 110, the sending module 120, the first receiving module 210, the second determining module 220, the third determining module 230, the second receiving module 310, and the setting module 320 may be configured by one or more Central Processing Unit (CPU), Graphics Processing Unit (GPU, Graphics Processing Unit), baseband processor (BP, baseband processor), Application Specific Integrated Circuit (ASIC, Application Specific Integrated Circuit), DSP, programmable logic Device (PLD, Programmable Logic Device), Complex Programmable Logic Device (CPLD, Complex Programmable Logic Device), Field-Programmable Gate Array (FPGA, Field-Programmable Gate Array), general-purpose processor, controller, microcontroller (MCU) , Micro Controller Unit, Microprocessor, or other electronic components are used to implement the foregoing method.
  • CPU Central Processing Unit
  • GPU Graphics Processing Unit
  • BP baseband processor
  • ASIC Application Specific Integrated Circuit
  • DSP programmable logic Device
  • PLD Programmable Logic Device
  • CPLD Complex Programmable Logic Device
  • Fig. 8 is a block diagram showing a device 3000 for data transmission according to an exemplary embodiment.
  • the device 3000 may be a mobile phone, a computer, a digital broadcasting terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.
  • the device 3000 may include one or more of the following components: a processing component 3002, a memory 3004, a power supply component 3006, a multimedia component 3008, an audio component 3010, an input/output (I/O) interface 3012, a sensor component 3014, And the communication component 3016.
  • a processing component 3002 a memory 3004, a power supply component 3006, a multimedia component 3008, an audio component 3010, an input/output (I/O) interface 3012, a sensor component 3014, And the communication component 3016.
  • the processing component 3002 generally controls the overall operations of the device 3000, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations.
  • the processing component 3002 may include one or more processors 3020 to execute instructions to complete all or part of the steps of the foregoing method.
  • the processing component 3002 may include one or more modules to facilitate the interaction between the processing component 3002 and other components.
  • the processing component 3002 may include a multimedia module to facilitate the interaction between the multimedia component 3008 and the processing component 3002.
  • the memory 3004 is configured to store various types of data to support the operation of the device 3000. Examples of such data include instructions for any application or method operating on the device 3000, contact data, phone book data, messages, pictures, videos, etc.
  • the memory 3004 can be implemented by any type of volatile or non-volatile storage device or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic Disk or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EPROM erasable Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Magnetic Disk Magnetic Disk or Optical Disk.
  • the power supply component 3006 provides power for various components of the device 3000.
  • the power supply component 3006 may include a power management system, one or more power supplies, and other components associated with the generation, management, and distribution of power for the device 3000.
  • the multimedia component 3008 includes a screen that provides an output interface between the device 3000 and the user.
  • the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user.
  • the touch panel includes one or more touch sensors to sense touch, sliding, and gestures on the touch panel. The touch sensor can not only sense the boundary of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation.
  • the multimedia component 3008 includes a front camera and/or a rear camera. When the device 3000 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.
  • the audio component 3010 is configured to output and/or input audio signals.
  • the audio component 3010 includes a microphone (MIC), and when the device 3000 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive external audio signals.
  • the received audio signal may be further stored in the memory 3004 or transmitted via the communication component 3016.
  • the audio component 3010 further includes a speaker for outputting audio signals.
  • the I/O interface 3012 provides an interface between the processing component 3002 and a peripheral interface module.
  • the above-mentioned peripheral interface module may be a keyboard, a click wheel, a button, and the like. These buttons may include, but are not limited to: home button, volume button, start button, and lock button.
  • the sensor assembly 3014 includes one or more sensors for providing the device 3000 with various aspects of status assessment.
  • the sensor component 3014 can detect the open/close status of the device 3000 and the relative positioning of components, such as the display and keypad of the device 3000.
  • the sensor component 3014 can also detect the position change of the device 3000 or a component of the device 3000. The presence or absence of contact with the device 3000, the orientation or acceleration/deceleration of the device 3000, and the temperature change of the device 3000.
  • the sensor assembly 3014 may include a proximity sensor configured to detect the presence of nearby objects when there is no physical contact.
  • the sensor component 3014 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor component 3014 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.
  • the communication component 3016 is configured to facilitate wired or wireless communication between the device 3000 and other devices.
  • the device 3000 can access a wireless network based on a communication standard, such as Wi-Fi, 2G or 3G, or a combination thereof.
  • the communication component 3016 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel.
  • the communication component 3016 also includes a near field communication (NFC) module to facilitate short-range communication.
  • the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.
  • RFID radio frequency identification
  • IrDA infrared data association
  • UWB ultra-wideband
  • Bluetooth Bluetooth
  • the device 3000 may be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable A gate array (FPGA), controller, microcontroller, microprocessor, or other electronic components are implemented to implement the above methods.
  • ASIC application specific integrated circuits
  • DSP digital signal processors
  • DSPD digital signal processing devices
  • PLD programmable logic devices
  • FPGA field programmable A gate array
  • controller microcontroller, microprocessor, or other electronic components are implemented to implement the above methods.
  • non-transitory computer-readable storage medium including instructions, such as the memory 3004 including instructions, and the foregoing instructions may be executed by the processor 3020 of the device 3000 to complete the foregoing method.
  • the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

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Abstract

本公开实施例是关于数据传输方法、装置、通信设备及存储介质。根据多传输连接传输中数据帧的接收状况，确定持续时长指示信息，其中，所述持续时长指示信息用于指示继续占用传输连接的持续时长；发送第一确认消息帧，其中，所述第一确认消息帧包括：所述接收状况的反馈信息及所述持续时长指示信息。

Description

数据传输方法、装置、通信设备及存储介质 技术领域
本申请涉及无线通信技术领域但不限于无线通信技术领域，尤其涉及数据传输方法、装置、通信设备及存储介质。
背景技术
新一代主流Wi-Fi技术，主要特点为采用高大320MHz的传输带宽、采用多个频段的聚合及协同技术等，相对于现有的IEEE802.11ax提高至少四倍的速率以及吞吐量。新技术的主要应用场景为视频传输，增强现实(AR，Augmented Reality)、虚拟现实(VR，Virtual Reality)等。其中，多个频段的聚合及协同技术是指Wi-Fi设备间同时在2.4GHz、5.8GHz及6-7GHz的频段下进行通信。
发明内容
有鉴于此，本公开实施例提供了一种数据传输方法、装置、通信设备及存储介质。
根据本公开实施例的第一方面，提供一种数据传输方法，其中，应用于第一通信设备，所述方法包括：
根据多传输连接传输中数据帧的接收状况，确定持续时长指示信息，其中，所述持续时长指示信息用于指示继续占用传输连接的持续时长；
发送第一确认消息帧，其中，所述第一确认消息帧包括：所述接收状况的反馈信息及所述持续时长指示信息。
在一个实施例中，根据多传输连接传输中数据帧的接收状况，确定持续时长指示信息，包括：
当所述数据帧接收失败时，确定所述持续时长指示信息，其中，所述持续时长指示信息指示的所述持续时长包括：重传数据帧的传输时长。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括以下至少之一：
第一确定消息帧的传输时长；
所述重传数据帧对应的第二确定消息帧的传输时长。
在一个实施例中，当所述数据帧为单播数据帧时，所述重传数据帧的传输时长包括：重传一个所述单播数据帧的传输时长。
在一个实施例中，当所述数据帧为连续数据帧时，所述第一确定消息帧为块确定消息帧；
所述重传数据帧的传输时长包括：重传所述连续数据帧中接收失败的n个数据块的传输时长。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括：所述数据块中相邻两个所述数据块之间的短帧间间隔。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括以下至少之一：所述第一确定消息帧和所述重传数据帧之间的短帧间间隔；或所述重传数据帧与所述重传数据帧对应的第二确定消息帧之间的短帧间间隔。
在一个实施例中，所述根据多传输连接传输中数据帧的接收状况，确定持续时长指示信息，包括：
当所述数据帧接收失败时，确定所述持续时长指示信息，其中，所述持续时长指示信息指示的所述持续时长的表达式包括：
2*ACK+数据帧长度+2*SIFS
其中，所述2*ACK表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述数据帧长度表示当所述数据帧 为单播数据帧时，重传一个所述单播数据帧的传输时长；2*SIFS表示两个短帧间间隔。
在一个实施例中，所述根据多传输连接传输中数据帧的接收状况，确定持续时长指示信息，包括：
当所述数据帧接收失败时，确定所述持续时长指示信息，其中，所述持续时长指示信息指示的所述持续时长的表达式包括：
2*BA+n*数据块长度+(1+n)*SIFS
其中，所述2*BA表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述n*数据块长度表示当所述数据帧为连续数据帧时，重传所述连续数据帧中接收失败的n个数据块的传输时长；(1+n)*SIFS表示n+1个短帧间间隔。
在一个实施例中，所述持续时长指示信息，包括：
位于所述第一确认消息帧媒体访问控制MAC帧头中的持续时间域；
和，
位于所述第一确认消息帧物理帧头中的长度域。
在一个实施例中，所述根据多传输连接传输中数据帧的接收状况，确定持续时长指示信息，包括：当所述数据帧接收成功时，使得所述持续时长指示信息指示的所述持续时长为0。
根据本公开实施例的第二方面，提供一种数据传输方法，其中，应用于第二通信设备，所述方法包括：
接收第一确认消息帧；
根据所述第一确认消息帧中的反馈信息，确定多传输连接传输中数据帧的接收状况；
根据所述第一确认消息帧中持续时长指示信息，确定继续占用传输连接的所述持续时长，其中，所述持续时长指示信息是基于所述数据帧的所 述接收状况的。
在一个实施例中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长包括：重传数据帧的传输时长。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括以下至少之一：
第一确定消息帧的传输时长；
所述重传数据帧对应的第二确定消息帧的传输时长。
在一个实施例中，当所述数据帧为单播数据帧时，所述重传数据帧的传输时长包括：重传一个所述单播数据帧的传输时长。
在一个实施例中，当所述数据帧为连续数据帧时，所述第一确定消息帧为块确定消息帧；
所述重传数据帧的传输时长包括：重传所述连续数据帧中接收失败的n个数据块的传输时长。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括：所述数据块中相邻两个所述数据块之间的短帧间间隔。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括：所述第一确定消息帧和所述重传数据帧之间的短帧间间隔；和所述重传数据帧与所述重传数据帧对应的第二确定消息帧之间的短帧间间隔。
在一个实施例中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长的表达式包括：
2*ACK+数据帧长度+2*SIFS
其中，所述2*ACK表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述数据帧长度表示当所述数据帧为单播数据帧时，重传一个所述单播数据帧的传输时长；2*SIFS表示两个短帧间间隔。
在一个实施例中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长的表达式包括：
2*BA+n*数据块长度+(1+n)*SIFS
其中，所述2*BA表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述n*数据块长度表示当所述数据帧为连续数据帧时，重传所述连续数据帧中接收失败的n个数据块的传输时长；(1+n)*SIFS表示n+1个短帧间间隔。
在一个实施例中，所述根据所述第一确认消息帧中持续时长指示信息，确定继续占用传输连接的所述持续时长，包括：
根据所述第一确认消息帧媒体访问控制MAC帧头中的持续时间域的指示，确定继续占用传输连接的所述持续时长。
根据本公开实施例的第三方面，提供一种数据传输方法，其中，应用于第三通信设备，所述方法包括：
接收第一确认消息帧；
根据所述第一确认消息帧中持续时长指示信息所指示的继续占用传输连接的持续时长，设置网络分配矢量(NAV，Network Allocation Vector)，其中，所述持续时长指示信息是基于多传输连接传输中数据帧的接收状况的。
在一个实施例中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长包括：重传数据帧的传输时长。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括以下至少之一：
第一确定消息帧的传输时长；
所述重传数据帧对应的第二确定消息帧的传输时长。
在一个实施例中，当所述数据帧为单播数据帧时，所述重传数据帧的 传输时长包括：重传一个所述单播数据帧的传输时长。
在一个实施例中，当所述数据帧为连续数据帧时，所述第一确定消息帧为块确定消息帧；
所述重传数据帧的传输时长包括：重传所述连续数据帧中接收失败的n个数据块的传输时长。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括：所述数据块中相邻两个所述数据块之间的短帧间间隔。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括：所述第一确定消息帧和所述重传数据帧之间的短帧间间隔；和所述重传数据帧与所述重传数据帧对应的第二确定消息帧之间的短帧间间隔。
在一个实施例中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长的表达式包括：
2*ACK+数据帧长度+2*SIFS
其中，所述2*ACK表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述数据帧长度表示当所述数据帧为单播数据帧时，重传一个所述单播数据帧的传输时长；2*SIFS表示两个短帧间间隔。
在一个实施例中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长的表达式包括：
2*BA+n*数据块长度+(1+n)*SIFS
其中，所述2*BA表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述n*数据块长度表示当所述数据帧为连续数据帧时，重传所述连续数据帧中接收失败的n个数据块的传输时长；(1+n)*SIFS表示n+1个短帧间间隔。
在一个实施例中，所述根据所述第一确认消息帧中持续时长指示信息 所指示的继续占用传输连接的持续时长，设置NAV，包括：
根据所述第一确认消息帧媒体访问控制MAC帧头中的持续时间域所指示的继续占用所述传输连接的所述持续时长，设置所述NAV
或，
根据所述第一确认消息帧物理帧头中的长度域所指示的继续占用所述传输连接的所述持续时长，设置所述NAV。
在一个实施例中，所述根据所述第一确认消息帧中持续时长指示信息所指示的继续占用传输连接的持续时长，设置NAV，包括：
响应于所述持续时长大于所述NAV指示的在所述传输连接保持静默的避让时长，采用所述持续时长更新所述避让时长。
在一个实施例中，所述根据所述第一确认消息帧中持续时长指示信息所指示的继续占用传输连接的持续时长，设置NAV，包括：
响应于所述持续时长小于或等于所述NAV指示在所述传输连接保持静默的避让时长，保持所述NAV。
根据本公开实施例的第四方面，提供一种数据传输装置，其中，应用于第一通信设备，所述装置包括：第一确定模块和发送模块，其中，
所述第一确定模块，配置为根据多传输连接传输中数据帧的接收状况，确定持续时长指示信息，其中，所述持续时长指示信息用于指示继续占用传输连接的持续时长；
所述发送模块，配置为发送第一确认消息帧，其中，所述第一确认消息帧包括：所述接收状况的反馈信息及所述持续时长指示信息。
在一个实施例中，所述第一确定模块，包括：
第一确定子模块，配置为当所述数据帧接收失败时，确定所述持续时长指示信息，其中，所述持续时长指示信息指示的所述持续时长包括：重传数据帧的传输时长。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括以下至少之一：
第一确定消息帧的传输时长；
所述重传数据帧对应的第二确定消息帧的传输时长。
在一个实施例中，当所述数据帧为单播数据帧时，所述重传数据帧的传输时长包括：重传一个所述单播数据帧的传输时长。
在一个实施例中，当所述数据帧为连续数据帧时，所述第一确定消息帧为块确定消息帧；
所述重传数据帧的传输时长包括：重传所述连续数据帧中接收失败的n个数据块的传输时长。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括：所述数据块中相邻两个所述数据块之间的短帧间间隔。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括以下至少之一：所述第一确定消息帧和所述重传数据帧之间的短帧间间隔；或所述重传数据帧与所述重传数据帧对应的第二确定消息帧之间的短帧间间隔。
在一个实施例中，所述第一确定模块，包括：
第二确定子模块，配置为当所述数据帧接收失败时，确定所述持续时长指示信息，其中，所述持续时长指示信息指示的所述持续时长的表达式包括：
2*ACK+数据帧长度+2*SIFS
其中，所述2*ACK表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述数据帧长度表示当所述数据帧为单播数据帧时，重传一个所述单播数据帧的传输时长；2*SIFS表示两个短帧间间隔。
在一个实施例中，所述第一确定模块，包括：
第三确定子模块，配置为当所述数据帧接收失败时，确定所述持续时长指示信息，其中，所述持续时长指示信息指示的所述持续时长的表达式包括：
2*BA+n*数据块长度+(1+n)*SIFS
其中，所述2*BA表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述n*数据块长度表示当所述数据帧为连续数据帧时，重传所述连续数据帧中接收失败的n个数据块的传输时长；(1+n)*SIFS表示n+1个短帧间间隔。
在一个实施例中，所述持续时长指示信息，包括：
位于所述第一确认消息帧媒体访问控制MAC帧头中的持续时间域；
和，
位于所述第一确认消息帧物理帧头中的长度域。
在一个实施例中，所述第一确定模块，包括：
第四确定子模块，配置为当所述数据帧接收成功时，使得所述持续时长指示信息指示的所述持续时长为0。
根据本公开实施例的第五方面，提供一种数据传输装置，其中，应用于第二通信设备，所述装置包括：第一接收模块、第二确定模块和第三确定模块，其中，
所述第一接收模块，配置为接收第一确认消息帧；
所述第二确定模块，配置为根据所述第一确认消息帧中的反馈信息，确定多传输连接传输中数据帧的接收状况；
所述第三确定模块，配置为根据所述第一确认消息帧中持续时长指示信息，确定继续占用传输连接的所述持续时长，其中，所述持续时长指示信息是基于所述数据帧的所述接收状况的。
在一个实施例中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长包括：重传数据帧的传输时长。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括以下至少之一：
第一确定消息帧的传输时长；
所述重传数据帧对应的第二确定消息帧的传输时长。
在一个实施例中，当所述数据帧为单播数据帧时，所述重传数据帧的传输时长包括：重传一个所述单播数据帧的传输时长。
在一个实施例中，当所述数据帧为连续数据帧时，所述第一确定消息帧为块确定消息帧；
所述重传数据帧的传输时长包括：重传所述连续数据帧中接收失败的n个数据块的传输时长。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括：所述数据块中相邻两个所述数据块之间的短帧间间隔。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括：所述第一确定消息帧和所述重传数据帧之间的短帧间间隔；和所述重传数据帧与所述重传数据帧对应的第二确定消息帧之间的短帧间间隔。
在一个实施例中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长的表达式包括：
2*ACK+数据帧长度+2*SIFS
其中，所述2*ACK表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述数据帧长度表示当所述数据帧为单播数据帧时，重传一个所述单播数据帧的传输时长；2*SIFS表示两个短帧间间隔。
在一个实施例中，当所述数据帧接收失败时，所述持续时长指示信息 指示的所述持续时长的表达式包括：
2*BA+n*数据块长度+(1+n)*SIFS
其中，所述2*BA表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述n*数据块长度表示当所述数据帧为连续数据帧时，重传所述连续数据帧中接收失败的n个数据块的传输时长；(1+n)*SIFS表示n+1个短帧间间隔。
在一个实施例中，所述第三确定模块，包括：
第五确定子模块，配置为根据所述第一确认消息帧媒体访问控制MAC帧头中的持续时间域的指示，确定继续占用传输连接的所述持续时长。
根据本公开实施例的第六方面，提供一种数据传输装置，其中，应用于第三通信设备，所述装置包括：第二接收模块和设置模块，其中，
所述第二接收模块，配置为接收第一确认消息帧；
所述设置模块，配置为根据所述第一确认消息帧中持续时长指示信息所指示的继续占用传输连接的持续时长，设置网络分配矢量NAV，其中，所述持续时长指示信息是基于多传输连接传输中数据帧的接收状况的。
在一个实施例中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长包括：重传数据帧的传输时长。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括以下至少之一：
第一确定消息帧的传输时长；
所述重传数据帧对应的第二确定消息帧的传输时长。
在一个实施例中，当所述数据帧为单播数据帧时，所述重传数据帧的传输时长包括：重传一个所述单播数据帧的传输时长。
在一个实施例中，当所述数据帧为连续数据帧时，所述第一确定消息帧为块确定消息帧；
所述重传数据帧的传输时长包括：重传所述连续数据帧中接收失败的n个数据块的传输时长。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括：所述数据块中相邻两个所述数据块之间的短帧间间隔。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括：所述第一确定消息帧和所述重传数据帧之间的短帧间间隔；和所述重传数据帧与所述重传数据帧对应的第二确定消息帧之间的短帧间间隔。
在一个实施例中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长的表达式包括：
2*ACK+数据帧长度+2*SIFS
其中，所述2*ACK表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述数据帧长度表示当所述数据帧为单播数据帧时，重传一个所述单播数据帧的传输时长；2*SIFS表示两个短帧间间隔。
在一个实施例中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长的表达式包括：
2*BA+n*数据块长度+(1+n)*SIFS
其中，所述2*BA表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述n*数据块长度表示当所述数据帧为连续数据帧时，重传所述连续数据帧中接收失败的n个数据块的传输时长；(1+n)*SIFS表示n+1个短帧间间隔。
在一个实施例中，所述设置模块，包括：
第一设置子模块，配置根据所述第一确认消息帧媒体访问控制MAC帧头中的持续时间域所指示的继续占用所述传输连接的所述持续时长，设置所述NAV
或，
第二设置子模块，配置为根据所述第一确认消息帧物理帧头中的长度域所指示的继续占用所述传输连接的所述持续时长，设置所述NAV。
在一个实施例中，所述设置模块，包括：
第三设置子模块，配置为响应于所述持续时长大于所述NAV指示的在所述传输连接保持静默的避让时长，采用所述持续时长更新所述避让时长。
在一个实施例中，所述设置模块，包括：
第四设置子模块，配置为响应于所述持续时长小于或等于所述NAV指示在所述传输连接保持静默的避让时长，保持所述NAV。
根据本公开实施例的第七方面，提供一种数据传输装置，包括处理器、存储器及存储在存储器上并能够有所述处理器运行的可执行程序，其中，所述处理器运行所述可执行程序时执行如第一方面、第二方面或第三方面所述数据传输方法的步骤。
根据本公开实施例的第八方面，提供一种存储介质，其上存储由可执行程序，其中，所述可执行程序被处理器执行时实现如第一方面、第二方面或第三方面所述数据传输方法的步骤。
本公开实施例提供的数据传输方法、装置、通信设备及存储介质，数据帧接收端根据多传输连接传输中数据帧的接收状况，确定持续时长指示信息，其中，所述持续时长指示信息用于指示继续占用传输连接的持续时长；发送第一确认消息帧，其中，所述第一确认消息帧包括：所述接收状况的反馈信息及所述持续时长指示信息。如此，根据数据帧的接收情况，确定由第一确认消息帧指示的继续占用传输连接的持续时长，一方面，不再固定于一个持续时长，提高了持续时长设置的灵活性，另一方面，可以根据后续传输的需求设置持续时长，相对固定的持续时长，可以减少在没有传输需求时占用传输连接引起的资源浪费情况，也可以减少由于持续时 长不足需要重新竞争使用传输连接引起的传输时延的情况，从而提高传输效率。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开实施例。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本发明实施例，并与说明书一起用于解释本发明实施例的原理。
图1是根据一示例性实施例示出的一种数据传输方法的流程示意图；
图2是根据一示例性实施例示出的另一种数据传输方法的流程示意图；
图3是根据一示例性实施例示出的又一种数据传输方法的流程示意图；
图4是根据一示例性实施例示出的一种数据传输装置的框图；
图5是根据一示例性实施例示出的另一种数据传输装置的框图；
图6是根据一示例性实施例示出的又一种数据传输装置的框图；
图7是根据一示例性实施例示出的一种用于数据传输的装置的框图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本发明实施例相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本发明实施例的一些方面相一致的装置和方法的例子。
在本公开实施例使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本公开实施例。在本公开实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含 一个或多个相关联的列出项目的任何或所有可能组合。
应当理解，本文中所使用的术语“包括”是指至少部分地由所列举的项目所组成。例如，“包括A、B、C”可以指仅包括项目A、B和C，也可以指示至少包括A、B和C，也可以包括其他的项目。此外，在不偏离本发明技术方案精神的前提下，本领域技术人员应理解，术语“包括”还可以指“取决于”或“基于”。例如，“A包括B”可以指“A是基于B的”、或“A是取决于B的”。
应当理解，尽管在本公开实施例可能采用术语第一、第二、第三等来描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本公开实施例范围的情况下，第一信息也可以被称为第二信息，类似地，第二信息也可以被称为第一信息。取决于语境，如在此所使用的词语“如果”可以被解释成为“在……时”或“当……时”或“响应于确定”。
本公开实施例涉及的执行主体包括但不限于：无线通信网络尤其是Wi-Fi网络如IEEE802.11a/b/g/n/ac标准下，以及下一代Wi-Fi网络中IEEE802.11be标准下的网络设备，其中，网络设备包括但不限于：Wi-Fi路由器等无线(AP，Access Point)接入点设备、无线站点(STA，Station)、用户终端、用户节点、移动终端或平板电脑等。
本公开实施例的一个应用场景为，现有的IEEE802.11标准中，数据帧在完成传输后，数据帧接收端向数据帧发送端反馈确认消息(ACK)帧，确认消息帧可以分为两种：针对单播数据帧的ACK帧，及针对连续数据帧的块确认消息(BA，Block ACK)。无论数据帧是否接收成功，两种确认消息帧中的持续时间(duration)域指示的持续时长均不包含的数据帧重传所需时间。如果数据帧发送端需要重传数据帧，则需要重新通过竞争等方式占用通信连接，如此，加长了数据帧传输的时延，降低传输效率。
如图1所示，本示例性实施例提供一种数据传输方法，数据传输方法可以应用于无线通信的第一通信设备，数据传输方法可以包括：
步骤101：根据多传输连接传输中数据帧的接收状况，确定持续时长指示信息，其中，所述持续时长指示信息用于指示继续占用传输连接的持续时长；
步骤102：发送第一确认消息帧，其中，所述第一确认消息帧包括：所述接收状况的反馈信息及所述持续时长指示信息。
这里，无线通信可以是采用IEEE802.11be等标准的Wi-Fi通信；第一通信设备、第二通信设备和第三通信设备可以是Wi-Fi通信中的无线站点(STA，STAtion)或无线接入点(AP，Access Point)等。数据帧可以是在多个传输连接中的各传输连接中分别进行传输的数据帧。数据帧可以是物理层协议数据帧(PPDU，Physical Layer Protocol Data Unit)。第一通信设备可以是数据帧的接收端，第二通信设备可以是数据帧的发送端，第三通信设备可以是数据帧的接收端和数据帧的发送端以外的其他通信设备。数据帧可以包括单播数据帧和连续数据帧。
多传输连接传输可以是占用多个传输频段进行的传输。传输频段可以是Wi-Fi工作频段，如2.4GHz、5.8GHz及6-7GHz等；也可以是传输连接占用的带宽的频率范围。其中，各传输连接占用的带宽的频率范围可以属于同一个Wi-Fi工作频段，也可以属于不同Wi-Fi工作频段。
第二通信设备可以采用多个传输连接中的一个传输连接发送数据帧，由第一通信设备接收。第一通信设备接收数据帧后，可以通过奇偶校验、循环冗余检验CRC等方式确定数据帧的接收情况，并通过向第二通信设备发送第一确认消息帧的方式，反馈数据帧接收情况。当数据帧为单播数据帧时，第一确认消息帧可以是针对单播数据帧的确认(ACK)帧或非确认(NACK)帧。当数据帧为连续数据帧时，第一确认消息帧可以是针对连续 数据帧的块确认(Block-ACK)帧等。第一确认消息帧可以携带反馈信息，用于指示数据帧的接收情况。示例性的，针对单播数据帧，第一确认消息帧可以用1个比特位或多个比特位指示单播数据帧接收成功或接收失败，例如，可以用“0”表示数据帧接收失败，用“1”表示数据帧接收成功；也可以用“1”表示数据帧接收失败，用“2”表示数据帧接收成功。针对连续数据帧，第一确认消息帧可以用位图(bitmap)的形式指示连续数据帧中每个数据块的接收情况，例如，可以用“0”表示数据块接收失败，用“1”表示数据块接收成功；也可以用“1”表示数据块接收失败，用“0”表示数据块接收成功。
当第一通信设备确定数据帧接收失败时，可以通过发送第一确认消息帧指示数据帧接收失败，第二通信设备可以重传数据帧。当单播数据帧接收失败时，第二通信设备可以重传该单播数据帧。当连续数据帧中一个或多个子数据帧接收失败时，第一通信设备可以通过在第一确认消息帧中通过位图等方式指示接收失败的子数据帧，第二通信设备可以重传接收失败的子数据帧。
第一确认消息帧可以设置有指示持续时长的持续时长指示信息。持续时长指示信息用于指示第一通信设备继续占用传输第一确认消息帧的传输连接的持续时长。这里，继续占用传输连接的持续时长可以是继续占用传输连接资源的持续时长。
该持续时长可以用于告知第三通信设备通信连接被继续占用的时长，相当于第三通信设备在该持续时间内停止竞争该通信连接，从而减少该通信连接的被竞争导致的传输干扰，提升数据传输质量。
例如，第三通信设备接收第一确认消息帧后，根据持续时长指示信息确定第一通信设备和第二通信设备继续占用传输连接的持续时长，并根据持续时长设置自身的网络分配矢量(NAV，Network Allocation Vector)，在 该持续时长内在传输连接上保持静默，使得第一通信设备和第二通信设备之间的传输不被干扰。NAV可以理解为一个计数器，表示信道还要被占用多久，第三通信设备可以维持一个NAV。NAV的值随着时间推移不断减小，在NAV值减到零之前，第三通信设备始终认为传输连接忙而停止竞争和数据发送。
持续时长可以根据数据帧接收情况确定，例如，如果数据帧接收成功，则后续只有第一确认消息帧需要传输，因此，可以设置较短的持续时长。如果数据帧接收失败，则后续需要传输第一确认消息帧、重传数据帧等，因此，可以设置较长的持续时长。如此，可以根据数据帧的接收状况和后续传输需求，灵活设置继续占用传输连接的持续时长。可以减少在没有传输需求时占用传输连接引起的资源浪费情况，也可以减少由于持续时长不足需要重新竞争使用传输连接引起的传输时延的情况，从而提高传输效率。
第二通信设备接收第一确认消息帧后，可以根据反馈信息确定数据帧的接收情况，并根据持续时长指示信息确定继续占用传输连接的持续时长。如果数据帧接收失败，可以在持续时长内重传数据帧。不再另行通过竞争等方式获取重传数据帧的传输资源，从而提高重传数据帧的传输效率。
如此，根据数据帧的接收情况，确定由第一确认消息帧指示的继续占用传输连接的持续时长，一方面，不再固定于一个持续时长，提高了持续时长设置的灵活性；另一方面，可以根据后续传输的需求设置持续时长，相对固定的持续时长，可以减少在没有传输需求时占用传输连接引起的资源浪费情况，也可以减少由于持续时长不足需要重新竞争使用传输连接引起的传输时延的情况，从而提高传输效率。
在一个实施例中，步骤101可以包括：
当所述数据帧接收失败时，确定所述持续时长指示信息，其中，所述持续时长指示信息指示的所述持续时长包括：重传数据帧的传输时长。
当数据帧接收失败时，第二通信设备需要对数据帧进行重传。因此，持续时长可以包括：重传数据帧的传输时长。
第三通信设备可以在第一通信设备和第二通信设备传输重传数据帧时，在传输连接上保持静默，减少对传输连接的干扰。
如此，实现预先占用传输重传数据帧所需的传输资源。第一通信设备或第二通信设备可以不再需要通过竞争等方式获取传输资源。可以减少由于另行获取传输资源所产生的等待时间，降低了传输时延，提高传输效率。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括以下至少之一：
第一确定消息帧的传输时长；
所述重传数据帧对应的第二确定消息帧的传输时长。
当数据帧接收失败时，第一通信设备需要发送第一确定消息帧，第二通信设备需要对数据帧进行传，第一通信设备需要针对接收的重传数据帧向第二通信设备返回第二确定消息帧。因此，持续时长可以包括：第一确定消息帧的传输时长、重传数据帧的传输时长，和重传数据帧对应的第二确定消息帧的传输时长。
第三通信设备可以在第一通信设备和第二通信设备传输第一确定消息帧、重传数据帧，和重传数据帧对应的第二确定消息帧时，在传输连接上保持静默，减少对传输连接的干扰。
如此，实现预先占用传输第一确定消息帧、重传数据帧，和重传数据帧对应的第二确定消息帧所需的传输资源。第一通信设备或第二通信设备可以不再需要通过竞争等方式获取传输资源。可以减少由于另行获取传输资源所产生的等待时间，降低了传输时延，提高传输效率。
在一个实施例中，当所述数据帧为单播数据帧时，所述重传数据帧的传输时长包括：重传一个所述单播数据帧的传输时长。
当数据帧为单播数据帧时，第二通信设备需要重传该单播数据帧，因此，重传数据帧的传输时长为重传一个单播数据帧的传输时长。
针对单播数据帧，第一确定消息帧还可以包括：重传指示信息，重传指示信息用于指示重传单播数据帧。第二通信设备接收到第一确定消息帧后，基于重传指示信息的重传该单播数据帧。
重传指示信息可以位于第一确定消息帧的MAC帧头的类型(Type)字段、和/或MAC帧头的子类型(Subtype)字段、和/或MAC帧头的更多数据(more data)域。
在一个实施例中，当所述数据帧为连续数据帧时，所述第一确定消息帧为块确定消息帧；
所述重传数据帧的传输时长包括：重传所述连续数据帧中接收失败的n个数据块的传输时长。
当数据帧为连续数据帧时，连续数据帧被分为多个数据块分别进行发送。这里，数据块可以称为数据子帧。针对连续数据帧，第一确定消息帧可以是块确定消息帧，可以采用位图等方式指示每个数据块的接收情况。例如，位图中可以用“0”表示数据块接收失败，用“1”表示数据块接收成功。
接收到第一确定消息帧后，第二通信设备可以只对接收失败的数据块进行重传，如此，可以节省传输资源。
因此，重传数据帧的传输时长可以包括：重传数据块的传输时长，其中，重传的数据块可以是1个或多个。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括：所述数据块中相邻两个所述数据块之间的短帧间间隔。
第二通信设备在发送连续数据帧时，在相邻数据块之间间隔一个短帧间间隔，因此，可以在持续时长包括相邻数据块之间的短帧间间隔。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括以下至少之一：所述第一确定消息帧和所述重传数据帧之间的短帧间间隔；或所述重传数据帧与所述重传数据帧对应的第二确定消息帧之间的短帧间间隔。
在第二通信设备接收第一确定消息帧，和发送重传数据帧之间，第二通信设备需要对接收的第一确定消息帧进行处理，并为传输重传数据帧做封包等处理，因此，可以在第一确定消息帧和重传数据帧之间设置短帧间间隔，为第二通信设备提供处理时间。
在第一通信设备接收重传数据帧，并针对重传数据帧发送第二确定消息之间，第一通信设备需要确定重传数据帧的接收情况等，因此，可以在重传数据帧与第二确定消息帧之间设置短帧间间隔，为第一通信设备提供处理时间。
如此，基于数据帧重传的时长需求，设置持续时长，可以提高持续时长的准确性，满足数据帧重传的需求。
在一个实施例中，步骤101可以包括：
当所述数据帧接收失败时，确定所述持续时长指示信息，其中，所述持续时长指示信息指示的所述持续时长的表达式包括：
2*ACK+数据帧长度+2*SIFS
其中，所述2*ACK表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述数据帧长度表示当所述数据帧为单播数据帧时，重传一个所述单播数据帧的传输时长；2*SIFS表示两个短帧间间隔。
示例性的，针对接收失败的单播数据帧，持续时长可以是：2*ACK+单播数据帧传输时长+2*SIFS长度，其中，2*ACK表示第一确定消息帧和第二确定消息帧的传输时长，2*SIFS表示两个短帧间间隔。这里，两个短帧 间间隔可以是在第一确定消息帧和重传数据帧之间的短帧间间隔，以及重传数据帧与第二确定消息帧之间的短帧间间隔。
在一个实施例中，步骤101可以包括：
当所述数据帧接收失败时，确定所述持续时长指示信息，其中，所述持续时长指示信息指示的所述持续时长的表达式包括：
2*BA+n*数据块长度+(1+n)*SIFS
其中，所述2*BA表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述n*数据块长度表示当所述数据帧为连续数据帧时，重传所述连续数据帧中接收失败的n个数据块的传输时长；(1+n)*SIFS表示n+1个短帧间间隔。
示例性的，针对接收失败的包含个数据块的连续数据帧，持续时长可以是：2*BA+n*数据块传输时长+(1+n)*SIFS，其中，2*B表示第一确定消息帧和第二确定消息帧的传输时长，(1+n)*SIFS表示1+n个短帧间间隔，n*数据块传输时长表示n个数据块的传输时长。这里，n表示重传数据块的数量，n可以是大于或等于1的正整数，n小于或等于连续数据帧包含的数据块数量。n+1短帧间间隔可以是在第一确定消息帧和重传数据帧之间的短帧间间隔、重传数据帧与第二确定消息帧之间的短帧间间隔、以及n个重传的数据块之间的短帧间间隔。
在一个实施例中，所述持续时长指示信息，包括：
位于所述第一确认消息帧媒体访问控制MAC帧头中的持续时间域；
和，
位于所述第一确认消息帧物理帧头中的长度域。
持续时长可以通过MAC帧头中的持续时间域和物理帧头中的长度域指示。
第二通信设备可以通过持续时间域确定持续时长。在持续时长内重传 数据帧等。
如果第三通信设备和第一通信设备属于同一个基本服务集(BSS，Basis Service Set)，则可以解析MAC帧头，并通过持续时间域确定持续时长。此时，第三通信设备可以根据持续时间域指示的持续时长，设置NAV。
如果第三通信设备和第一通信设备不属于同一个BSS，第三通信设备接收第一确认消息帧后可以首先解析物理帧头，并通过长度域确定持续时长。由于第三通信设备和第一通信设备不属于同一个BSS，因此，第三通信设备解析物理帧头后，不再解析MAC帧头。此时，第三通信设备可以根据长度域指示的持续时长，设置NAV。如此，通过在持续时间域和长度域分别指示持续时长，提高第一确认消息帧对不同BSS的通信设备的适应性。
第三通信设备接收到第一确认消息帧后，根据比较自身NAV指示的避让时长，如果持续时长大于避让时长，则说明第三通信设备需要静默更长的时间，因此，可以用持续时长更新避让时长。
如果持续时长小于或等于避让时长，则说明第三通信设备静默的时长超出第一用户设备和第二用户设备声明占用的时间，因此，可以用保持当前的NAV。
在一个实施例中，步骤101可以包括：：当所述数据帧接收成功时，使得所述持续时长指示信息指示的所述持续时长为0。
当数据帧接收成功时，第一确认消息帧信息量较少，因此可以设置持续时长为0，指示第一通信设备和第二通信设备不再占用传输连接。
如图2所示，本示例性实施例提供一种数据传输方法，数据传输方法可以应用于无线通信的第二通信设备，数据传输方法可以包括：
步骤201：接收第一确认消息帧；
步骤202：根据所述第一确认消息帧中的反馈信息，确定多传输连接传输中数据帧的接收状况；
步骤203：根据所述第一确认消息帧中持续时长指示信息，确定继续占用传输连接的所述持续时长，其中，所述持续时长指示信息是基于所述数据帧的所述接收状况的。
这里，无线通信可以是采用IEEE802.11be等标准的Wi-Fi通信；第一通信设备、第二通信设备和第三通信设备可以是Wi-Fi通信中的无线站点(STA，STAtion)或无线接入点(AP，Access Point)等。数据帧可以是在多个传输连接中的各传输连接中分别进行传输的数据帧。数据帧可以是物理层协议数据帧(PPDU，Physical Layer Protocol Data Unit)。第一通信设备可以是数据帧的接收端，第二通信设备可以是数据帧的发送端，第三通信设备可以是数据帧的接收端和数据帧的发送端以外的其他通信设备。数据帧可以包括单播数据帧和连续数据帧。
多传输连接传输可以是占用多个传输频段进行的传输。传输频段可以是Wi-Fi工作频段，如2.4GHz、5.8GHz及6-7GHz等；也可以是传输连接占用的带宽的频率范围。其中，各传输连接占用的带宽的频率范围可以属于同一个Wi-Fi工作频段，也可以属于不同Wi-Fi工作频段。
第二通信设备可以采用多个传输连接中的一个传输连接发送数据帧，由第一通信设备接收。第一通信设备接收数据帧后，可以通过奇偶校验、循环冗余检验CRC等方式确定数据帧的接收情况，并通过向第二通信设备发送第一确认消息帧的方式，反馈数据帧接收情况。当数据帧为单播数据帧时，第一确认消息帧可以是针对单播数据帧的确认(ACK)帧或非确认(NACK)帧。当数据帧为连续数据帧时，第一确认消息帧可以是针对连续数据帧的块确认(Block-ACK)帧等。
第一确认消息帧可以携带反馈信息，用于指示数据帧的接收情况。示例性的，针对单播数据帧，第一确认消息帧可以用1个比特位或多个比特位指示单播数据帧接收成功或接收失败，例如，可以用“0”表示数据帧接 收失败，用“1”表示数据帧接收成功；也可以用“1”表示数据帧接收失败，用“2”表示数据帧接收成功。针对连续数据帧，第一确认消息帧可以用位图(bitmap)的形式指示连续数据帧中每个数据块的接收情况，例如，可以用“0”表示数据块接收失败，用“1”表示数据块接收成功；也可以用“1”表示数据块接收失败，用“0”表示数据块接收成功。
当第一通信设备确定数据帧接收失败时，可以通过发送第一确认消息帧指示数据帧接收失败，第二通信设备可以重传数据帧。当单播数据帧接收失败时，第二通信设备可以重传该单播数据帧。当连续数据帧中一个或多个子数据帧接收失败时，第一通信设备可以通过在第一确认消息帧中通过位图等方式指示接收失败的子数据帧，第二通信设备可以重传接收失败的子数据帧。
第一确认消息帧可以设置有指示持续时长的持续时长指示信息。持续时长指示信息用于指示第一通信设备继续占用传输第一确认消息帧的传输连接的持续时长。这里，继续占用传输连接的持续时长可以是继续占用传输连接资源的持续时长，相当于第三通信设备在该持续时间内停止竞争该通信连接，从而减少该通信连接的被竞争导致的传输干扰，提升数据传输质量。
例如，该持续时长可以用于告知第三通信设备通信连接被继续占用的时长。第三通信设备接收第一确认消息帧后，根据持续时长指示信息确定第一通信设备和第二通信设备继续占用传输连接的持续时长，并根据持续时长设置自身的NAV，在该持续时长内在传输连接上保持静默，使得第一通信设备和第二通信设备之间的传输不被干扰。NAV可以理解为一个计数器，表示信道还要被占用多久，第三通信设备可以维持一个NAV。NAV的值随着时间推移不断减小，在NAV值减到零之前，第三通信设备始终认为传输连接忙而停止竞争和数据发送。
持续时长可以根据数据帧接收情况确定，例如，如果数据帧接收成功，则后续只有第一确认消息帧需要传输，因此，可以设置较短的持续时长。如果数据帧接收失败，则后续需要传输第一确认消息帧、重传数据帧等，因此，可以设置较长的持续时长。如此，可以根据数据帧的接收状况和后续传输需求，灵活设置继续占用传输连接的持续时长。可以减少在没有传输需求时占用传输连接引起的资源浪费情况，也可以减少由于持续时长不足需要重新竞争使用传输连接引起的传输时延的情况，从而提高传输效率。
第二通信设备接收第一确认消息帧后，可以根据反馈信息确定数据帧的接收情况，并根据持续时长指示信息确定继续占用传输连接的持续时长。如果数据帧接收失败，可以在持续时长内重传数据帧。不再另行通过竞争等方式获取重传数据帧的传输资源，从而提高重传数据帧的传输效率。
第三通信设备接收第一确认消息帧后，根据持续时长指示信息确定第一通信设备和第二通信设备继续占用传输连接的持续时长，并根据持续时长设置自身的NAV，在持续时长内在传输连接上保持静默，使得第一通信设备和第二通信设备之间的传输不被干扰。NAV可以理解为一个计数器，表示信道还要被占用多久，第三通信设备可以维持一个NAV。NAV的值随着时间推移不断减小，在NAV值减到零之前，第三通信设备始终认为传输连接忙而停止竞争和数据发送。
如此，根据数据帧的接收情况，确定由第一确认消息帧指示的继续占用传输连接的持续时长，一方面，不再固定于一个持续时长，提高了持续时长设置的灵活性；另一方面，可以根据后续传输的需求设置持续时长，相对固定的持续时长，可以减少在没有传输需求时占用传输连接引起的资源浪费情况，也可以减少由于持续时长不足需要重新竞争使用传输连接引起的传输时延的情况，从而提高传输效率。
在一个实施例中，当所述数据帧接收失败时，所述持续时长指示信息 指示的所述持续时长包括：重传数据帧的传输时长。
当数据帧接收失败时，第二通信设备需要对数据帧进行重传。因此，持续时长可以包括：重传数据帧的传输时长。
第三通信设备可以在第一通信设备和第二通信设备传输重传数据帧时，在传输连接上保持静默，减少对传输连接的干扰。
如此，实现预先占用传输重传数据帧所需的传输资源。第一通信设备或第二通信设备可以不再需要通过竞争等方式获取传输资源。可以减少由于另行获取传输资源所产生的等待时间，降低了传输时延，提高传输效率。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括以下至少之一：
第一确定消息帧的传输时长；
所述重传数据帧对应的第二确定消息帧的传输时长。
当数据帧接收失败时，第一通信设备需要发送第一确定消息帧，第二通信设备需要对数据帧进行传，第一通信设备需要针对接收的重传数据帧向第二通信设备返回第二确定消息帧。因此，持续时长可以包括：第一确定消息帧的传输时长、重传数据帧的传输时长，和重传数据帧对应的第二确定消息帧的传输时长。
第三通信设备可以在第一通信设备和第二通信设备传输第一确定消息帧、重传数据帧，和重传数据帧对应的第二确定消息帧时，在传输连接上保持静默，减少对传输连接的干扰。
如此，实现预先占用传输第一确定消息帧、重传数据帧，和重传数据帧对应的第二确定消息帧所需的传输资源。第一通信设备或第二通信设备可以不再需要通过竞争等方式获取传输资源。可以减少由于另行获取传输资源所产生的等待时间，降低了传输时延，提高传输效率。
在一个实施例中，当所述数据帧为单播数据帧时，所述重传数据帧的 传输时长包括：重传一个所述单播数据帧的传输时长。
当数据帧为单播数据帧时，第二通信设备需要重传该单播数据帧，因此，重传数据帧的传输时长为重传一个单播数据帧的传输时长。
示例性的，针对接收失败的单播数据帧，持续时长可以是：2*ACK+单播数据帧传输时长+2*SIFS长度，其中，2*ACK表示第一确定消息帧和第二确定消息帧的传输时长，2*SIFS表示两个短帧间间隔。
针对单播数据帧，第一确定消息帧还可以包括：重传指示信息，重传指示信息用于指示重传单播数据帧。第二通信设备接收到第一确定消息帧后，基于重传指示信息的重传该单播数据帧。
重传指示信息可以位于第一确定消息帧的MAC帧头的类型(Type)字段、和/或MAC帧头的子类型(Subtype)字段、和/或MAC帧头的更多数据(more data)域。
在一个实施例中，当所述数据帧为连续数据帧时，所述第一确定消息帧为块确定消息帧；
所述重传数据帧的传输时长包括：重传所述连续数据帧中接收失败的n个数据块的传输时长。
当数据帧为连续数据帧时，连续数据帧被分为多个数据块分别进行发送。这里，数据块可以称为数据子帧。针对连续数据帧，第一确定消息帧可以是块确定消息帧，可以采用位图等方式指示每个数据块的接收情况。例如，位图中可以用“0”表示数据块接收失败，用“1”表示数据块接收成功。
接收到第一确定消息帧后，第二通信设备可以只对接收失败的数据块进行重传，如此，可以节省传输资源。
因此，重传数据帧的传输时长可以包括：重传数据块的传输时长，其中，重传的数据块可以是1个或多个。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括：所述数据块中相邻两个所述数据块之间的短帧间间隔。
第二通信设备在发送连续数据帧时，在相邻数据块之间间隔一个短帧间间隔，因此，可以在持续时长包括相邻数据块之间的短帧间间隔。
示例性的，示例性的，针对接收失败的包含个数据块的连续数据帧，持续时长可以是：2*BA+n*数据块传输时长+(1+n)*SIFS，其中，2*B表示第一确定消息帧和第二确定消息帧的传输时长，(1+n)*SIFS表示1+n个短帧间间隔，n*数据块传输时长表示n个数据块的传输时长。这里，n表示重传数据块的数量，n可以是大于或等于1的正整数，n小于或等于连续数据帧包含的数据块数量。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括：所述第一确定消息帧和所述重传数据帧之间的短帧间间隔；和所述重传数据帧与所述重传数据帧对应的第二确定消息帧之间的短帧间间隔。
在第二通信设备接收第一确定消息帧，和发送重传数据帧之间，第二通信设备需要对接收的第一确定消息帧进行处理，并为传输重传数据帧做封包等处理，因此，可以在第一确定消息帧和重传数据帧之间设置短帧间间隔，为第二通信设备提供处理时间。
在第一通信设备接收重传数据帧，并针对重传数据帧发送第二确定消息之间，第一通信设备需要确定重传数据帧的接收情况等，因此，可以在重传数据帧与第二确定消息帧之间设置短帧间间隔，为第一通信设备提供处理时间。
如此，基于数据帧重传的时长需求，设置持续时长，可以提高持续时长的准确性，满足数据帧重传的需求。
在一个实施例中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长的表达式包括：
2*ACK+数据帧长度+2*SIFS
其中，所述2*ACK表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述数据帧长度表示当所述数据帧为单播数据帧时，重传一个所述单播数据帧的传输时长；2*SIFS表示两个短帧间间隔。
示例性的，针对接收失败的单播数据帧，持续时长可以是：2*ACK+单播数据帧传输时长+2*SIFS长度，其中，2*ACK表示第一确定消息帧和第二确定消息帧的传输时长，2*SIFS表示两个短帧间间隔。这里，两个短帧间间隔可以是在第一确定消息帧和重传数据帧之间的短帧间间隔，以及重传数据帧与第二确定消息帧之间的短帧间间隔。
在一个实施例中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长的表达式包括：
2*BA+n*数据块长度+(1+n)*SIFS
其中，所述2*BA表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述n*数据块长度表示当所述数据帧为连续数据帧时，重传所述连续数据帧中接收失败的n个数据块的传输时长；(1+n)*SIFS表示n+1个短帧间间隔。
示例性的，针对接收失败的包含个数据块的连续数据帧，持续时长可以是：2*BA+n*数据块传输时长+(1+n)*SIFS，其中，2*B表示第一确定消息帧和第二确定消息帧的传输时长，(1+n)*SIFS表示1+n个短帧间间隔，n*数据块传输时长表示n个数据块的传输时长。这里，n表示重传数据块的数量，n可以是大于或等于1的正整数，n小于或等于连续数据帧包含的数据块数量。n+1短帧间间隔可以是在第一确定消息帧和重传数据帧之间的短帧间间隔、重传数据帧与第二确定消息帧之间的短帧间间隔、以及n个重传的数据块之间的短帧间间隔。
在一个实施例中，步骤203可以包括：
根据所述第一确认消息帧媒体访问控制MAC帧头中的持续时间域的指示，确定继续占用传输连接的所述持续时长。
持续时长可以通过MAC帧头中的持续时间域和物理帧头中的长度域指示。
第二通信设备可以通过持续时间域确定持续时长。在持续时长内重传数据帧等。
如果第三通信设备和第一通信设备属于同一个BSS，则可以解析MAC帧头，并通过持续时间域确定持续时长。此时，第三通信设备可以根据持续时间域指示的持续时长，设置NAV。
如果第三通信设备和第一通信设备不属于同一个BSS，第三通信设备接收第一确认消息帧后可以首先解析物理帧头，并通过长度域确定持续时长。由于第三通信设备和第一通信设备不属于同一个BSS，因此，第三通信设备解析物理帧头后，不再解析MAC帧头。此时，第三通信设备可以根据长度域指示的持续时长，设置NAV。如此，通过在持续时间域和长度域分别指示持续时长，提高第一确认消息帧对不同BSS的通信设备的适应性。
第三通信设备接收到第一确认消息帧后，根据比较自身NAV指示的避让时长，如果持续时长大于避让时长，则说明第三通信设备需要静默更长的时间，因此，可以用持续时长更新避让时长。
如果持续时长小于或等于避让时长，则说明第三通信设备静默的时长超出第一用户设备和第二用户设备声明占用的时间，因此，可以用保持当前的NAV。
如图3所示，本示例性实施例提供一种数据传输方法，数据传输方法可以应用于无线通信的第二通信设备，数据传输方法可以包括：
步骤301：接收第一确认消息帧；
步骤302：根据所述第一确认消息帧中持续时长指示信息所指示的继续占用传输连接的持续时长，设置网络分配矢量(NAV，Network Allocation Vector)，其中，所述持续时长指示信息是基于多传输连接传输中数据帧的接收状况的接收第一确认消息帧；
这里，无线通信可以是采用IEEE802.11be等标准的Wi-Fi通信；第一通信设备、第二通信设备和第三通信设备可以是Wi-Fi通信中的无线站点(STA，STAtion)或无线接入点(AP，Access Point)等。数据帧可以是在多个传输连接中的各传输连接中分别进行传输的数据帧。数据帧可以是物理层协议数据帧(PPDU，Physical Layer Protocol Data Unit)。第一通信设备可以是数据帧的接收端，第二通信设备可以是数据帧的发送端，第三通信设备可以是数据帧的接收端和数据帧的发送端以外的其他通信设备。数据帧可以包括单播数据帧和连续数据帧。
多传输连接传输可以是占用多个传输频段进行的传输。传输频段可以是Wi-Fi工作频段，如2.4GHz、5.8GHz及6-7GHz等；也可以是传输连接占用的带宽的频率范围。其中，各传输连接占用的带宽的频率范围可以属于同一个Wi-Fi工作频段，也可以属于不同Wi-Fi工作频段。
第二通信设备可以采用多个传输连接中的一个传输连接发送数据帧，由第一通信设备接收。第一通信设备接收数据帧后，可以通过奇偶校验、循环冗余检验CRC等方式确定数据帧的接收情况，并通过向第二通信设备发送第一确认消息帧的方式，反馈数据帧接收情况。当数据帧为单播数据帧时，第一确认消息帧可以是针对单播数据帧的确认(ACK)帧或非确认(NACK)帧。当数据帧为连续数据帧时，第一确认消息帧可以是针对连续数据帧的块确认(Block-ACK)帧等。
第一确认消息帧可以携带反馈信息，用于指示数据帧的接收情况。示例性的，针对单播数据帧，第一确认消息帧可以用1个比特位或多个比特 位指示单播数据帧接收成功或接收失败，例如，可以用“0”表示数据帧接收失败，用“1”表示数据帧接收成功；也可以用“1”表示数据帧接收失败，用“2”表示数据帧接收成功。针对连续数据帧，第一确认消息帧可以用位图(bitmap)的形式指示连续数据帧中每个数据块的接收情况，例如，可以用“0”表示数据块接收失败，用“1”表示数据块接收成功；也可以用“1”表示数据块接收失败，用“0”表示数据块接收成功。
当第一通信设备确定数据帧接收失败时，可以通过发送第一确认消息帧指示数据帧接收失败，第二通信设备可以重传数据帧。当单播数据帧接收失败时，第二通信设备可以重传该单播数据帧。当连续数据帧中一个或多个子数据帧接收失败时，第一通信设备可以通过在第一确认消息帧中通过位图等方式指示接收失败的子数据帧，第二通信设备可以重传接收失败的子数据帧。
第一确认消息帧可以设置有指示持续时长的持续时长指示信息。持续时长指示信息用于指示第一通信设备继续占用传输第一确认消息帧的传输连接的持续时长。这里，继续占用传输连接的持续时长可以是继续占用传输连接资源的持续时长，相当于第三通信设备在该持续时间内停止竞争该通信连接，从而减少该通信连接的被竞争导致的传输干扰，提升数据传输质量。
例如，该持续时长可以用于告知第三通信设备通信连接被继续占用的时长。第三通信设备接收第一确认消息帧后，根据持续时长指示信息确定第一通信设备和第二通信设备继续占用传输连接的持续时长，并根据持续时长设置自身的NAV，在该持续时长内在传输连接上保持静默，使得第一通信设备和第二通信设备之间的传输不被干扰。NAV可以理解为一个计数器，表示信道还要被占用多久，第三通信设备可以维持一个NAV。NAV的值随着时间推移不断减小，在NAV值减到零之前，第三通信设备始终认为 传输连接忙而停止竞争和数据发送。
持续时长可以根据数据帧接收情况确定，例如，如果数据帧接收成功，则后续只有第一确认消息帧需要传输，因此，可以设置较短的持续时长。如果数据帧接收失败，则后续需要传输第一确认消息帧、重传数据帧等，因此，可以设置较长的持续时长。如此，可以根据数据帧的接收状况和后续传输需求，灵活设置继续占用传输连接的持续时长。可以减少在没有传输需求时占用传输连接引起的资源浪费情况，也可以减少由于持续时长不足需要重新竞争使用传输连接引起的传输时延的情况，从而提高传输效率。
第二通信设备接收第一确认消息帧后，可以根据反馈信息确定数据帧的接收情况，并根据持续时长指示信息确定继续占用传输连接的持续时长。如果数据帧接收失败，可以在持续时长内重传数据帧。不再另行通过竞争等方式获取重传数据帧的传输资源，从而提高重传数据帧的传输效率。。
第三通信设备接收第一确认消息帧后，根据持续时长指示信息确定第一通信设备和第二通信设备继续占用传输连接的持续时长，并根据持续时长设置自身的NAV，在持续时长内在传输连接上保持静默，使得第一通信设备和第二通信设备之间的传输不被干扰。NAV可以理解为一个计数器，表示信道还要被占用多久，第三通信设备可以维持一个NAV。NAV的值随着时间推移不断减小，在NAV值减到零之前，第三通信设备始终认为传输连接忙而停止竞争和数据发送。
如此，根据数据帧的接收情况，确定由第一确认消息帧指示的继续占用传输连接的持续时长，一方面，不再固定于一个持续时长，提高了持续时长设置的灵活性；另一方面，可以根据后续传输的需求设置持续时长，相对固定的持续时长，可以减少在没有传输需求时占用传输连接引起的资源浪费情况，也可以减少由于持续时长不足需要重新竞争使用传输连接引起的传输时延的情况，从而提高传输效率。
在一个实施例中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长包括：重传数据帧的传输时长。
当数据帧接收失败时，第二通信设备需要对数据帧进行重传。因此，持续时长可以包括：重传数据帧的传输时长。
第三通信设备可以在第一通信设备和第二通信设备传输重传数据帧时，在传输连接上保持静默，减少对传输连接的干扰。
如此，实现预先占用传输重传数据帧所需的传输资源。第一通信设备或第二通信设备可以不再需要通过竞争等方式获取传输资源。可以减少由于另行获取传输资源所产生的等待时间，降低了传输时延，提高传输效率。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括以下至少之一：
第一确定消息帧的传输时长；
所述重传数据帧对应的第二确定消息帧的传输时长。
当数据帧接收失败时，第一通信设备需要发送第一确定消息帧，第二通信设备需要对数据帧进行传，第一通信设备需要针对接收的重传数据帧向第二通信设备返回第二确定消息帧。因此，持续时长可以包括：第一确定消息帧的传输时长、重传数据帧的传输时长，和重传数据帧对应的第二确定消息帧的传输时长。
第三通信设备可以在第一通信设备和第二通信设备传输第一确定消息帧、重传数据帧，和重传数据帧对应的第二确定消息帧时，在传输连接上保持静默，减少对传输连接的干扰。
如此，实现预先占用传输第一确定消息帧、重传数据帧，和重传数据帧对应的第二确定消息帧所需的传输资源。第一通信设备或第二通信设备可以不再需要通过竞争等方式获取传输资源。可以减少由于另行获取传输资源所产生的等待时间，降低了传输时延，提高传输效率。
在一个实施例中，当所述数据帧为单播数据帧时，所述重传数据帧的传输时长包括：重传一个所述单播数据帧的传输时长。
当数据帧为单播数据帧时，第二通信设备需要重传该单播数据帧，因此，重传数据帧的传输时长为重传一个单播数据帧的传输时长。
示例性的，针对接收失败的单播数据帧，持续时长可以是：2*ACK+单播数据帧传输时长+2*SIFS长度，其中，2*ACK表示第一确定消息帧和第二确定消息帧的传输时长，2*SIFS表示两个短帧间间隔。
针对单播数据帧，第一确定消息帧还可以包括：重传指示信息，重传指示信息用于指示重传单播数据帧。第二通信设备接收到第一确定消息帧后，基于重传指示信息的重传该单播数据帧。
重传指示信息可以位于第一确定消息帧的MAC帧头的类型(Type)字段、和/或MAC帧头的子类型(Subtype)字段、和/或MAC帧头的更多数据(more data)域。
在一个实施例中，当所述数据帧为连续数据帧时，所述第一确定消息帧为块确定消息帧；
所述重传数据帧的传输时长包括：重传所述连续数据帧中接收失败的n个数据块的传输时长。
当数据帧为连续数据帧时，连续数据帧被分为多个数据块分别进行发送。这里，数据块可以称为数据子帧。针对连续数据帧，第一确定消息帧可以是块确定消息帧，可以采用位图等方式指示每个数据块的接收情况。例如，位图中可以用“0”表示数据块接收失败，用“1”表示数据块接收成功。
接收到第一确定消息帧后，第二通信设备可以只对接收失败的数据块进行重传，如此，可以节省传输资源。
因此，重传数据帧的传输时长可以包括：重传数据块的传输时长，其 中，重传的数据块可以是1个或多个。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括：所述数据块中相邻两个所述数据块之间的短帧间间隔。
第二通信设备在发送连续数据帧时，在相邻数据块之间间隔一个短帧间间隔，因此，可以在持续时长包括相邻数据块之间的短帧间间隔。
示例性的，示例性的，针对接收失败的包含个数据块的连续数据帧，持续时长可以是：2*BA+n*数据块传输时长+(1+n)*SIFS，其中，2*B表示第一确定消息帧和第二确定消息帧的传输时长，(1+n)*SIFS表示1+n个短帧间间隔，n*数据块传输时长表示n个数据块的传输时长。这里，n表示重传数据块的数量，n可以是大于或等于1的正整数，n小于或等于连续数据帧包含的数据块数量。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括：所述第一确定消息帧和所述重传数据帧之间的短帧间间隔；和所述重传数据帧与所述重传数据帧对应的第二确定消息帧之间的短帧间间隔。
在第二通信设备接收第一确定消息帧，和发送重传数据帧之间，第二通信设备需要对接收的第一确定消息帧进行处理，并为传输重传数据帧做封包等处理，因此，可以在第一确定消息帧和重传数据帧之间设置短帧间间隔，为第二通信设备提供处理时间。
在第一通信设备接收重传数据帧，并针对重传数据帧发送第二确定消息之间，第一通信设备需要确定重传数据帧的接收情况等，因此，可以在重传数据帧与第二确定消息帧之间设置短帧间间隔，为第一通信设备提供处理时间。
如此，基于数据帧重传的时长需求，设置持续时长，可以提高持续时长的准确性，满足数据帧重传的需求。
在一个实施例中，当所述数据帧接收失败时，所述持续时长指示信息 指示的所述持续时长的表达式包括：
2*ACK+数据帧长度+2*SIFS
其中，所述2*ACK表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述数据帧长度表示当所述数据帧为单播数据帧时，重传一个所述单播数据帧的传输时长；2*SIFS表示两个短帧间间隔。
示例性的，针对接收失败的单播数据帧，持续时长可以是：2*ACK+单播数据帧传输时长+2*SIFS长度，其中，2*ACK表示第一确定消息帧和第二确定消息帧的传输时长，2*SIFS表示两个短帧间间隔。。这里，两个短帧间间隔可以是在第一确定消息帧和重传数据帧之间的短帧间间隔，以及重传数据帧与第二确定消息帧之间的短帧间间隔。
在一个实施例中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长的表达式包括：
2*BA+n*数据块长度+(1+n)*SIFS
其中，所述2*BA表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述n*数据块长度表示当所述数据帧为连续数据帧时，重传所述连续数据帧中接收失败的n个数据块的传输时长；(1+n)*SIFS表示n+1个短帧间间隔
示例性的，针对接收失败的包含个数据块的连续数据帧，持续时长可以是：2*BA+n*数据块传输时长+(1+n)*SIFS，其中，2*B表示第一确定消息帧和第二确定消息帧的传输时长，(1+n)*SIFS表示1+n个短帧间间隔，n*数据块传输时长表示n个数据块的传输时长。这里，n表示重传数据块的数量，n可以是大于或等于1的正整数，n小于或等于连续数据帧包含的数据块数量。n+1短帧间间隔可以是在第一确定消息帧和重传数据帧之间的短帧间间隔、重传数据帧与第二确定消息帧之间的短帧间间隔、以及n个重 传的数据块之间的短帧间间隔。
在一个实施例中，步骤302可以包括：
根据所述第一确认消息帧媒体访问控制MAC帧头中的持续时间域所指示的继续占用所述传输连接的所述持续时长，设置所述NAV
或，
根据所述第一确认消息帧物理帧头中的长度域所指示的继续占用所述传输连接的所述持续时长，设置所述NAV。
持续时长可以通过MAC帧头中的持续时间域和物理帧头中的长度域指示。
第二通信设备可以通过持续时间域确定持续时长。在持续时长内重传数据帧等。
如果第三通信设备和第一通信设备属于同一个BSS，则可以解析MAC帧头，并通过持续时间域确定持续时长。此时，第三通信设备可以根据持续时间域指示的持续时长，设置NAV。
如果第三通信设备和第一通信设备不属于同一个BSS，第三通信设备接收第一确认消息帧后可以首先解析物理帧头，并通过长度域确定持续时长。由于第三通信设备和第一通信设备不属于同一个BSS，因此，第三通信设备解析物理帧头后，不再解析MAC帧头。此时，第三通信设备可以根据长度域指示的持续时长，设置NAV。如此，通过在持续时间域和长度域分别指示持续时长，提高第一确认消息帧对不同BSS的通信设备的适应性。
如果持续时长小于或等于避让时长，则说明第三通信设备静默的时长超出第一用户设备和第二用户设备声明占用的时间，因此，可以用保持当前的NAV。
在一个实施例中，步骤302可以包括
响应于所述持续时长大于所述NAV指示的在所述传输连接保持静默的 避让时长，采用所述持续时长更新所述避让时长。
第三通信设备接收到第一确认消息帧后，根据比较自身NAV指示的避让时长，如果持续时长大于避让时长，则说明第三通信设备需要静默更长的时间，因此，可以用持续时长更新避让时长。
如果持续时长小于或等于避让时长，则说明第三通信设备静默的时长超出第一用户设备和第二用户设备声明占用的时间，因此，可以用保持当前的NAV。
在一个实施例中，步骤302可以包括：
响应于所述持续时长小于或等于所述NAV指示在所述传输连接保持静默的避让时长，保持所述NAV。
本公开还提供一种数据传输方法，该方法中，当数据帧接收端响应于接收来自数据帧发送端的数据帧，发送确认(ACK)帧给数据帧发送端，以使得数据帧发送端能够判断该数据帧是否被正确接收。
其中，在一个实施例中，当数据帧为单播数据帧，并且数据帧接收端确定该单播数据帧没有被正确接收时，将第一ACK帧中的持续时间(duration)字段设置为：
2*ACK长度+2*SIFS+单播数据帧传输时长，
其中，单播数据帧传输时长表示重新传输该单播帧的时长；2*ACK表示第一ACK帧的传输时长，以及重传的单播数据帧对应的第二ACK的传输时长；2*SIFS表示重传的单播数据帧分别与上述第一ACK帧和第二ACK的短帧间间隔。
而在另一个实施例中，当数据帧为连续数据帧时，数据帧接收端可以采用块确认(BA，Block ACK)进行反馈。当数据帧接收端确定该连续数据帧没有被正确接收时，将第一块确认(BA)帧中的持续时间(duration)字段设置为：
2*BA+n*数据块长度+(1+n)*SIFS
其中，n*数据块长度表示重传所述连续数据帧中接收失败的n个数据块的传输时长，n为重传数据块的数量；2*BA表示第一BA帧的传输时长，以及重传的n个数据块对应的第二BA的传输时长；2*SIFS表示重传的n个数据块分别与上述第一BA帧和第二BA的短帧间间隔。
以下结合上述任意实施例提供一个具体示例：
本发明示例提供的数据传输方法包括：数据帧的接收端发送确认(ACK，Acknowledge)帧给数据帧的发送方，如数据帧没有被正确接收，则返回的ACK帧的持续时间(duration)字段设置为：2*ACK传输时长+2*SIFS+数据帧传输时长，其中，2*ACK传输时长包括：该ACK帧自身传输时长，以及重传数据帧的ACK帧传输时长，数据帧传输时长表示重传数据帧的传输时长，SIFS表示短帧间间隔。
ACK/块确认(BA，Block ACK)BA帧MAC帧头持续时间字段的设置：
针对单播数据帧：
数据帧的接收端反馈ACK帧，如数据帧没有被正确接收，则在ACK帧的持续时间字段设置为：2*ACK传输时长+数据帧长度传输时长+2*SIFS。
针对连续数据帧：
如反馈的为块确认，如连续数据帧中一些数据帧没有被接收成功，则反馈的块确认帧的持续时间字段设置为：2*BA+n*数据帧长度+(1+n)*SIFS，其中，n表示需要重传的数据帧的数量，
其中，n与BA中的位图bitmap中置为“0”的比特位个数一样。
针对其他站点的NAV设置
其他的站点接收到ACK帧后，根据ACK帧的持续时间字段设置自身NAV。，如ACK/BA帧中的持续时间字段标识的时间长度小于当前NAV设置的时间长度，则保持NAV不变，如ACK/BA帧中的持续时间字段标识的 时间长度大于前NAV设置的时间长度，则其NAV的时间长度更新与持续时间字段时间长度一样。
ACK/Block ACK的标识
分别在ACK/Block ACK帧MAC帧头的类型(type)及子类型(subtype)字段标识其为新的ACK帧格式，标识ACK/Block ACK帧发送后有重传数据帧。
本发明实施例还提供了一种数据传输装置，应用于无线通信的第一通信设备，如图4所示，数据传输装置100包括：第一确定模块110和发送模块120，其中，
所述第一确定模块110，配置为根据多传输连接传输中数据帧的接收状况，确定持续时长指示信息，其中，所述持续时长指示信息用于指示继续占用传输连接的持续时长；
所述发送模块120，配置为发送第一确认消息帧，其中，所述第一确认消息帧包括：所述接收状况的反馈信息及所述持续时长指示信息。
在一个实施例中，所述第一确定模块110，包括：
第一确定子模块111，配置为当所述数据帧接收失败时，确定所述持续时长指示信息，其中，所述持续时长指示信息指示的所述持续时长包括：重传数据帧的传输时长。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括以下至少之一：
第一确定消息帧的传输时长；
所述重传数据帧对应的第二确定消息帧的传输时长。
在一个实施例中，当所述数据帧为单播数据帧时，所述重传数据帧的传输时长包括：重传一个所述单播数据帧的传输时长。
在一个实施例中，当所述数据帧为连续数据帧时，所述第一确定消息 帧为块确定消息帧；
所述重传数据帧的传输时长包括：重传所述连续数据帧中接收失败的n个数据块的传输时长。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括：所述数据块中相邻两个所述数据块之间的短帧间间隔。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括以下至少之一：所述第一确定消息帧和所述重传数据帧之间的短帧间间隔；或所述重传数据帧与所述重传数据帧对应的第二确定消息帧之间的短帧间间隔。
在一个实施例中，所述第一确定模块110，包括：
第二确定子模块112，配置为当所述数据帧接收失败时，确定所述持续时长指示信息，其中，所述持续时长指示信息指示的所述持续时长的表达式包括：
2*ACK+数据帧长度+2*SIFS
其中，所述2*ACK表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述数据帧长度表示当所述数据帧为单播数据帧时，重传一个所述单播数据帧的传输时长；2*SIFS表示两个短帧间间隔。
在一个实施例中，所述第一确定模块110，包括：
第三确定子模块113，配置为当所述数据帧接收失败时，确定所述持续时长指示信息，其中，所述持续时长指示信息指示的所述持续时长的表达式包括：
2*BA+n*数据块长度+(1+n)*SIFS
其中，所述2*BA表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述n*数据块长度表示当所述数据帧 为连续数据帧时，重传所述连续数据帧中接收失败的n个数据块的传输时长；(1+n)*SIFS表示n+1个短帧间间隔。
在一个实施例中，所述持续时长指示信息，包括：
位于所述第一确认消息帧媒体访问控制MAC帧头中的持续时间域；
和，
位于所述第一确认消息帧物理帧头中的长度域。
在一个实施例中，所述第一确定模块110，包括：
第四确定子模块114，配置为当所述数据帧接收成功时，使得所述持续时长指示信息指示的所述持续时长为0。
本发明实施例还提供了一种数据传输装置，应用于无线通信的第二通信设备，如图5所示，数据传输装置200包括：第一接收模块210、第二确定模块220和第三确定模块230，其中，
所述第一接收模块210，配置为接收第一确认消息帧；
所述第二确定模块220，配置为根据所述第一确认消息帧中的反馈信息，确定多传输连接传输中数据帧的接收状况；
所述第三确定模块230，配置为根据所述第一确认消息帧中持续时长指示信息，确定继续占用传输连接的所述持续时长，其中，所述持续时长指示信息是基于所述数据帧的所述接收状况的。
在一个实施例中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长包括：重传数据帧的传输时长。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括以下至少之一：
第一确定消息帧的传输时长；
所述重传数据帧对应的第二确定消息帧的传输时长。
在一个实施例中，当所述数据帧为单播数据帧时，所述重传数据帧的 传输时长包括：重传一个所述单播数据帧的传输时长。
在一个实施例中，当所述数据帧为连续数据帧时，所述第一确定消息帧为块确定消息帧；
所述重传数据帧的传输时长包括：重传所述连续数据帧中接收失败的n个数据块的传输时长。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括：所述数据块中相邻两个所述数据块之间的短帧间间隔。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括：所述第一确定消息帧和所述重传数据帧之间的短帧间间隔；和所述重传数据帧与所述重传数据帧对应的第二确定消息帧之间的短帧间间隔。
在一个实施例中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长的表达式包括：
2*ACK+数据帧长度+2*SIFS
其中，所述2*ACK表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述数据帧长度表示当所述数据帧为单播数据帧时，重传一个所述单播数据帧的传输时长；2*SIFS表示两个短帧间间隔。
在一个实施例中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长的表达式包括：
2*BA+n*数据块长度+(1+n)*SIFS
其中，所述2*BA表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述n*数据块长度表示当所述数据帧为连续数据帧时，重传所述连续数据帧中接收失败的n个数据块的传输时长；(1+n)*SIFS表示n+1个短帧间间隔。
在一个实施例中，所述第三确定模块230，包括：
第五确定子模块231，配置为根据所述第一确认消息帧媒体访问控制MAC帧头中的持续时间域的指示，确定继续占用传输连接的所述持续时长。
本发明实施例还提供了一种数据传输装置，应用于无线通信的第三通信设备，如图6所示，数据传输装置300包括：第二接收模块310和设置模块320，其中，
所述第二接收模块310，配置为接收第一确认消息帧；
所述设置模块320，配置为根据所述第一确认消息帧中持续时长指示信息所指示的继续占用传输连接的持续时长，设置网络分配矢量NAV，其中，所述持续时长指示信息是基于多传输连接传输中数据帧的接收状况的。
在一个实施例中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长包括：重传数据帧的传输时长。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括以下至少之一：
第一确定消息帧的传输时长；
所述重传数据帧对应的第二确定消息帧的传输时长。
在一个实施例中，当所述数据帧为单播数据帧时，所述重传数据帧的传输时长包括：重传一个所述单播数据帧的传输时长。
在一个实施例中，当所述数据帧为连续数据帧时，所述第一确定消息帧为块确定消息帧；
所述重传数据帧的传输时长包括：重传所述连续数据帧中接收失败的n个数据块的传输时长。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括：所述数据块中相邻两个所述数据块之间的短帧间间隔。
在一个实施例中，所述持续时长指示信息指示的所述持续时长还包括： 所述第一确定消息帧和所述重传数据帧之间的短帧间间隔；和所述重传数据帧与所述重传数据帧对应的第二确定消息帧之间的短帧间间隔。
在一个实施例中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长的表达式包括：
2*ACK+数据帧长度+2*SIFS
其中，所述2*ACK表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述数据帧长度表示当所述数据帧为单播数据帧时，重传一个所述单播数据帧的传输时长；2*SIFS表示两个短帧间间隔。
在一个实施例中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长的表达式包括：
2*BA+n*数据块长度+(1+n)*SIFS
其中，所述2*BA表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述n*数据块长度表示当所述数据帧为连续数据帧时，重传所述连续数据帧中接收失败的n个数据块的传输时长；(1+n)*SIFS表示n+1个短帧间间隔。
在一个实施例中，所述设置模块320，包括：
第一设置子模块321，配置根据所述第一确认消息帧媒体访问控制MAC帧头中的持续时间域所指示的继续占用所述传输连接的所述持续时长，设置所述NAV
或，
第二设置子模块322，配置为根据所述第一确认消息帧物理帧头中的长度域所指示的继续占用所述传输连接的所述持续时长，设置所述NAV。
在一个实施例中，所述设置模块320，包括：
第三设置子模块323，配置为响应于所述持续时长大于所述NAV指示 的在所述传输连接保持静默的避让时长，采用所述持续时长更新所述避让时长。
在一个实施例中，所述设置模块320，包括：
第四设置子模块324，配置为响应于所述持续时长小于或等于所述NAV指示在所述传输连接保持静默的避让时长，保持所述NAV。
在示例性实施例中，第一确定模块110、发送模块120第一接收模块210、第二确定模块220、第三确定模块230、第二接收模块310和设置模块320等可以被一个或多个中央处理器(CPU，Central Processing Unit)、图形处理器(GPU，Graphics Processing Unit)、基带处理器(BP，baseband processor)、应用专用集成电路(ASIC，Application Specific Integrated Circuit)、DSP、可编程逻辑器件(PLD，Programmable Logic Device)、复杂可编程逻辑器件(CPLD，Complex Programmable Logic Device)、现场可编程门阵列(FPGA，Field-Programmable Gate Array)、通用处理器、控制器、微控制器(MCU，Micro Controller Unit)、微处理器(Microprocessor)、或其他电子元件实现，用于执行前述方法。
图8是根据一示例性实施例示出的一种用于数据传输的装置3000的框图。例如，装置3000可以是移动电话，计算机，数字广播终端，消息收发设备，游戏控制台，平板设备，医疗设备，健身设备，个人数字助理等。
参照图8，装置3000可以包括以下一个或多个组件：处理组件3002，存储器3004，电源组件3006，多媒体组件3008，音频组件3010，输入/输出(I/O)的接口3012，传感器组件3014，以及通信组件3016。
处理组件3002通常控制装置3000的整体操作，诸如与显示，电话呼叫，数据通信，相机操作和记录操作相关联的操作。处理组件3002可以包括一个或多个处理器3020来执行指令，以完成上述的方法的全部或部分步骤。此外，处理组件3002可以包括一个或多个模块，便于处理组件3002 和其他组件之间的交互。例如，处理组件3002可以包括多媒体模块，以方便多媒体组件3008和处理组件3002之间的交互。
存储器3004被配置为存储各种类型的数据以支持在装置3000的操作。这些数据的示例包括用于在装置3000上操作的任何应用程序或方法的指令，联系人数据，电话簿数据，消息，图片，视频等。存储器3004可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随机存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。
电源组件3006为装置3000的各种组件提供电力。电源组件3006可以包括电源管理系统，一个或多个电源，及其他与为装置3000生成、管理和分配电力相关联的组件。
多媒体组件3008包括在装置3000和用户之间的提供一个输出接口的屏幕。在一些实施例中，屏幕可以包括液晶显示器(LCD)和触摸面板(TP)。如果屏幕包括触摸面板，屏幕可以被实现为触摸屏，以接收来自用户的输入信号。触摸面板包括一个或多个触摸传感器以感测触摸、滑动和触摸面板上的手势。触摸传感器可以不仅感测触摸或滑动动作的边界，而且还检测与触摸或滑动操作相关的持续时间和压力。在一些实施例中，多媒体组件3008包括一个前置摄像头和/或后置摄像头。当装置3000处于操作模式，如拍摄模式或视频模式时，前置摄像头和/或后置摄像头可以接收外部的多媒体数据。每个前置摄像头和后置摄像头可以是一个固定的光学透镜系统或具有焦距和光学变焦能力。
音频组件3010被配置为输出和/或输入音频信号。例如，音频组件3010包括一个麦克风(MIC)，当装置3000处于操作模式，如呼叫模式、记录模式和语音识别模式时，麦克风被配置为接收外部音频信号。所接收的音频 信号可以被进一步存储在存储器3004或经由通信组件3016发送。在一些实施例中，音频组件3010还包括一个扬声器，用于输出音频信号。
I/O接口3012为处理组件3002和外围接口模块之间提供接口，上述外围接口模块可以是键盘，点击轮，按钮等。这些按钮可包括但不限于：主页按钮、音量按钮、启动按钮和锁定按钮。
传感器组件3014包括一个或多个传感器，用于为装置3000提供各个方面的状态评估。例如，传感器组件3014可以检测到装置3000的打开/关闭状态，组件的相对定位，例如组件为装置3000的显示器和小键盘，传感器组件3014还可以检测装置3000或装置3000一个组件的位置改变，用户与装置3000接触的存在或不存在，装置3000方位或加速/减速和装置3000的温度变化。传感器组件3014可以包括接近传感器，被配置用来在没有任何的物理接触时检测附近物体的存在。传感器组件3014还可以包括光传感器，如CMOS或CCD图像传感器，用于在成像应用中使用。在一些实施例中，该传感器组件3014还可以包括加速度传感器，陀螺仪传感器，磁传感器，压力传感器或温度传感器。
通信组件3016被配置为便于装置3000和其他设备之间有线或无线方式的通信。装置3000可以接入基于通信标准的无线网络，如Wi-Fi，2G或3G，或它们的组合。在一个示例性实施例中，通信组件3016经由广播信道接收来自外部广播管理系统的广播信号或广播相关信息。在一个示例性实施例中，通信组件3016还包括近场通信(NFC)模块，以促进短程通信。例如，在NFC模块可基于射频识别(RFID)技术，红外数据协会(IrDA)技术，超宽带(UWB)技术，蓝牙(BT)技术和其他技术来实现。
在示例性实施例中，装置3000可以被一个或多个应用专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程逻辑器件(PLD)、现场可编程门阵列(FPGA)、控制器、微控制器、微处 理器或其他电子元件实现，用于执行上述方法。
在示例性实施例中，还提供了一种包括指令的非临时性计算机可读存储介质，例如包括指令的存储器3004，上述指令可由装置3000的处理器3020执行以完成上述方法。例如，非临时性计算机可读存储介质可以是ROM、随机存取存储器(RAM)、CD-ROM、磁带、软盘和光数据存储设备等。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本发明实施例的其它实施方案。本申请旨在涵盖本发明实施例的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本发明实施例的一般性原理并包括本公开实施例未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本发明实施例的真正范围和精神由下面的权利要求指出。
应当理解的是，本发明实施例并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本发明实施例的范围仅由所附的权利要求来限制。

Claims (68)

  1. 一种数据传输方法，其中，应用于第一通信设备，所述方法包括：
    根据多传输连接传输中数据帧的接收状况，确定持续时长指示信息，其中，所述持续时长指示信息用于指示继续占用传输连接的持续时长；
    发送第一确认消息帧，其中，所述第一确认消息帧包括：所述接收状况的反馈信息及所述持续时长指示信息。
  2. 根据权利要求1所述的方法，其中，根据多传输连接传输中数据帧的接收状况，确定持续时长指示信息，包括：
    当所述数据帧接收失败时，确定所述持续时长指示信息，其中，所述持续时长指示信息指示的所述持续时长包括：重传数据帧的传输时长。
  3. 根据权利要求2所述的方法，其中，所述持续时长指示信息指示的所述持续时长还包括以下至少之一：
    第一确定消息帧的传输时长；
    所述重传数据帧对应的第二确定消息帧的传输时长。
  4. 根据权利要求2所述的方法，其中，
    当所述数据帧为单播数据帧时，所述重传数据帧的传输时长包括：重传一个所述单播数据帧的传输时长。
  5. 根据权利要求2所述的方法，其中，
    当所述数据帧为连续数据帧时，所述第一确定消息帧为块确定消息帧；
    所述重传数据帧的传输时长包括：重传所述连续数据帧中接收失败的n个数据块的传输时长。
  6. 根据权利要求5所述的方法，其中，所述持续时长指示信息指示的所述持续时长还包括：所述数据块中相邻两个所述数据块之间的短帧间间隔。
  7. 根据权利要求2至6任一项所述的方法，其中，所述持续时长指示 信息指示的所述持续时长还包括以下至少之一：所述第一确定消息帧和所述重传数据帧之间的短帧间间隔；或所述重传数据帧与所述重传数据帧对应的第二确定消息帧之间的短帧间间隔。
  8. 根据权利要求2至6任一项所述的方法，其中，所述根据多传输连接传输中数据帧的接收状况，确定持续时长指示信息，包括：
    当所述数据帧接收失败时，确定所述持续时长指示信息，其中，所述持续时长指示信息指示的所述持续时长的表达式包括：
    2*ACK+数据帧长度+2*SIFS
    其中，所述2*ACK表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述数据帧长度表示当所述数据帧为单播数据帧时，重传一个所述单播数据帧的传输时长；2*SIFS表示两个短帧间间隔。
  9. 根据权利要求2至6任一项所述的方法，其中，所述根据多传输连接传输中数据帧的接收状况，确定持续时长指示信息，包括：
    当所述数据帧接收失败时，确定所述持续时长指示信息，其中，所述持续时长指示信息指示的所述持续时长的表达式包括：
    2*BA+n*数据块长度+(1+n)*SIFS
    其中，所述2*BA表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述n*数据块长度表示当所述数据帧为连续数据帧时，重传所述连续数据帧中接收失败的n个数据块的传输时长；(1+n)*SIFS表示n+1个短帧间间隔。
  10. 根据权利要求1至6任一项所述的方法，其中，所述持续时长指示信息，包括：
    位于所述第一确认消息帧媒体访问控制MAC帧头中的持续时间域；
    和，
    位于所述第一确认消息帧物理帧头中的长度域。
  11. 根据权利要求1至6任一项所述的方法，其中，所述根据多传输连接传输中数据帧的接收状况，确定持续时长指示信息，包括：当所述数据帧接收成功时，使得所述持续时长指示信息指示的所述持续时长为0。
  12. 一种数据传输方法，其中，应用于第二通信设备，所述方法包括：
    接收第一确认消息帧；
    根据所述第一确认消息帧中的反馈信息，确定多传输连接传输中数据帧的接收状况；
    根据所述第一确认消息帧中持续时长指示信息，确定继续占用传输连接的所述持续时长，其中，所述持续时长指示信息是基于所述数据帧的所述接收状况的。
  13. 根据权利要求12所述的方法，其中，
    当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长包括：重传数据帧的传输时长。
  14. 根据权利要求13所述的方法，其中，所述持续时长指示信息指示的所述持续时长还包括以下至少之一：
    第一确定消息帧的传输时长；
    所述重传数据帧对应的第二确定消息帧的传输时长。
  15. 根据权利要求13所述的方法，其中，
    当所述数据帧为单播数据帧时，所述重传数据帧的传输时长包括：重传一个所述单播数据帧的传输时长。
  16. 根据权利要求13所述的方法，其中，
    当所述数据帧为连续数据帧时，所述第一确定消息帧为块确定消息帧；
    所述重传数据帧的传输时长包括：重传所述连续数据帧中接收失败的n个数据块的传输时长。
  17. 根据权利要求16所述的方法，其中，所述持续时长指示信息指示的所述持续时长还包括：所述数据块中相邻两个所述数据块之间的短帧间间隔。
  18. 根据权利要求13至17任一项所述的方法，其中，所述持续时长指示信息指示的所述持续时长还包括：所述第一确定消息帧和所述重传数据帧之间的短帧间间隔；和所述重传数据帧与所述重传数据帧对应的第二确定消息帧之间的短帧间间隔。
  19. 根据权利要求13至17任一项所述的方法，其中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长的表达式包括：
    2*ACK+数据帧长度+2*SIFS
    其中，所述2*ACK表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述数据帧长度表示当所述数据帧为单播数据帧时，重传一个所述单播数据帧的传输时长；2*SIFS表示两个短帧间间隔。
  20. 根据权利要求13至17任一项所述的方法，其中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长的表达式包括：
    2*BA+n*数据块长度+(1+n)*SIFS
    其中，所述2*BA表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述n*数据块长度表示当所述数据帧为连续数据帧时，重传所述连续数据帧中接收失败的n个数据块的传输时长；(1+n)*SIFS表示n+1个短帧间间隔。
  21. 根据权利要求13或17任一项所述的方法，其中，所述根据所述第一确认消息帧中持续时长指示信息，确定继续占用传输连接的所述持续时长，包括：
    根据所述第一确认消息帧媒体访问控制MAC帧头中的持续时间域的 指示，确定继续占用传输连接的所述持续时长。
  22. 一种数据传输方法，其中，应用于第三通信设备，所述方法包括：
    接收第一确认消息帧；
    根据所述第一确认消息帧中持续时长指示信息所指示的继续占用传输连接的持续时长，设置网络分配矢量NAV，其中，所述持续时长指示信息是基于多传输连接传输中数据帧的接收状况的。
  23. 根据权利要求22所述的方法，其中，
    当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长包括：重传数据帧的传输时长。
  24. 根据权利要求23所述的方法，其中，所述持续时长指示信息指示的所述持续时长还包括以下至少之一：
    第一确定消息帧的传输时长；
    所述重传数据帧对应的第二确定消息帧的传输时长。
  25. 根据权利要求23所述的方法，其中，
    当所述数据帧为单播数据帧时，所述重传数据帧的传输时长包括：重传一个所述单播数据帧的传输时长。
  26. 根据权利要求23所述的方法，其中，
    当所述数据帧为连续数据帧时，所述第一确定消息帧为块确定消息帧；
    所述重传数据帧的传输时长包括：重传所述连续数据帧中接收失败的n个数据块的传输时长。
  27. 根据权利要求26所述的方法，其中，所述持续时长指示信息指示的所述持续时长还包括：所述数据块中相邻两个所述数据块之间的短帧间间隔。
  28. 根据权利要求23至27任一项所述的方法，其中，所述持续时长指示信息指示的所述持续时长还包括：所述第一确定消息帧和所述重传数 据帧之间的短帧间间隔；和所述重传数据帧与所述重传数据帧对应的第二确定消息帧之间的短帧间间隔。
  29. 根据权利要求23至27任一项所述的方法，其中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长的表达式包括：
    2*ACK+数据帧长度+2*SIFS
    其中，所述2*ACK表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述数据帧长度表示当所述数据帧为单播数据帧时，重传一个所述单播数据帧的传输时长；2*SIFS表示两个短帧间间隔。
  30. 根据权利要求23至27任一项所述的方法，其中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长的表达式包括：
    2*BA+n*数据块长度+(1+n)*SIFS
    其中，所述2*BA表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述n*数据块长度表示当所述数据帧为连续数据帧时，重传所述连续数据帧中接收失败的n个数据块的传输时长；(1+n)*SIFS表示n+1个短帧间间隔。
  31. 根据权利要求22至27任一项所述的方法，其中，所述根据所述第一确认消息帧中持续时长指示信息所指示的继续占用传输连接的持续时长，设置NAV，包括：
    根据所述第一确认消息帧媒体访问控制MAC帧头中的持续时间域所指示的继续占用所述传输连接的所述持续时长，设置所述NAV
    或，
    根据所述第一确认消息帧物理帧头中的长度域所指示的继续占用所述传输连接的所述持续时长，设置所述NAV。
  32. 根据权利要求22至27任一项所述的方法，其中，所述根据所述 第一确认消息帧中持续时长指示信息所指示的继续占用传输连接的持续时长，设置NAV，包括：
    响应于所述持续时长大于所述NAV指示的在所述传输连接保持静默的避让时长，采用所述持续时长更新所述避让时长。
  33. 根据权利要求22至27任一项所述的方法，其中，所述根据所述第一确认消息帧中持续时长指示信息所指示的继续占用传输连接的持续时长，设置NAV，包括：
    响应于所述持续时长小于或等于所述NAV指示在所述传输连接保持静默的避让时长，保持所述NAV。
  34. 一种数据传输装置，其中，应用于第一通信设备，所述装置包括：第一确定模块和发送模块，其中，
    所述第一确定模块，配置为根据多传输连接传输中数据帧的接收状况，确定持续时长指示信息，其中，所述持续时长指示信息用于指示继续占用传输连接的持续时长；
    所述发送模块，配置为发送第一确认消息帧，其中，所述第一确认消息帧包括：所述接收状况的反馈信息及所述持续时长指示信息。
  35. 根据权利要求34所述的装置，其中，所述第一确定模块，包括：
    第一确定子模块，配置为当所述数据帧接收失败时，确定所述持续时长指示信息，其中，所述持续时长指示信息指示的所述持续时长包括：重传数据帧的传输时长。
  36. 根据权利要求35所述的装置，其中，所述持续时长指示信息指示的所述持续时长还包括以下至少之一：
    第一确定消息帧的传输时长；
    所述重传数据帧对应的第二确定消息帧的传输时长。
  37. 根据权利要求35所述的装置，其中，
    当所述数据帧为单播数据帧时，所述重传数据帧的传输时长包括：重传一个所述单播数据帧的传输时长。
  38. 根据权利要求35所述的装置，其中，
    当所述数据帧为连续数据帧时，所述第一确定消息帧为块确定消息帧；
    所述重传数据帧的传输时长包括：重传所述连续数据帧中接收失败的n个数据块的传输时长。
  39. 根据权利要求38所述的装置，其中，所述持续时长指示信息指示的所述持续时长还包括：所述数据块中相邻两个所述数据块之间的短帧间间隔。
  40. 根据权利要求35至39任一项所述的装置，其中，所述持续时长指示信息指示的所述持续时长还包括以下至少之一：所述第一确定消息帧和所述重传数据帧之间的短帧间间隔；或所述重传数据帧与所述重传数据帧对应的第二确定消息帧之间的短帧间间隔。
  41. 根据权利要求35至39任一项所述的装置，其中，所述第一确定模块，包括：
    第二确定子模块，配置为当所述数据帧接收失败时，确定所述持续时长指示信息，其中，所述持续时长指示信息指示的所述持续时长的表达式包括：
    2*ACK+数据帧长度+2*SIFS
    其中，所述2*ACK表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述数据帧长度表示当所述数据帧为单播数据帧时，重传一个所述单播数据帧的传输时长；2*SIFS表示两个短帧间间隔。
  42. 根据权利要求35至39任一项所述的装置，其中，所述第一确定模块，包括：
    第三确定子模块，配置为当所述数据帧接收失败时，确定所述持续时长指示信息，其中，所述持续时长指示信息指示的所述持续时长的表达式包括：
    2*BA+n*数据块长度+(1+n)*SIFS
    其中，所述2*BA表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述n*数据块长度表示当所述数据帧为连续数据帧时，重传所述连续数据帧中接收失败的n个数据块的传输时长；(1+n)*SIFS表示n+1个短帧间间隔。
  43. 根据权利要求34至39任一项所述的装置，其中，所述持续时长指示信息，包括：
    位于所述第一确认消息帧媒体访问控制MAC帧头中的持续时间域；
    和，
    位于所述第一确认消息帧物理帧头中的长度域。
  44. 根据权利要求34至39任一项所述的装置，其中，所述第一确定模块，包括：
    第四确定子模块，配置为当所述数据帧接收成功时，使得所述持续时长指示信息指示的所述持续时长为0。
  45. 一种数据传输装置，其中，应用于第二通信设备，所述装置包括：第一接收模块、第二确定模块和第三确定模块，其中，
    所述第一接收模块，配置为接收第一确认消息帧；
    所述第二确定模块，配置为根据所述第一确认消息帧中的反馈信息，确定多传输连接传输中数据帧的接收状况；
    所述第三确定模块，配置为根据所述第一确认消息帧中持续时长指示信息，确定继续占用传输连接的所述持续时长，其中，所述持续时长指示信息是基于所述数据帧的所述接收状况的。
  46. 根据权利要求45所述的装置，其中，
    当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长包括：重传数据帧的传输时长。
  47. 根据权利要求46所述的装置，其中，所述持续时长指示信息指示的所述持续时长还包括以下至少之一：
    第一确定消息帧的传输时长；
    所述重传数据帧对应的第二确定消息帧的传输时长。
  48. 根据权利要求46所述的装置，其中，
    当所述数据帧为单播数据帧时，所述重传数据帧的传输时长包括：重传一个所述单播数据帧的传输时长。
  49. 根据权利要求46所述的装置，其中，
    当所述数据帧为连续数据帧时，所述第一确定消息帧为块确定消息帧；
    所述重传数据帧的传输时长包括：重传所述连续数据帧中接收失败的n个数据块的传输时长。
  50. 根据权利要求49所述的装置，其中，所述持续时长指示信息指示的所述持续时长还包括：所述数据块中相邻两个所述数据块之间的短帧间间隔。
  51. 根据权利要求46至50任一项所述的装置，其中，所述持续时长指示信息指示的所述持续时长还包括：所述第一确定消息帧和所述重传数据帧之间的短帧间间隔；和所述重传数据帧与所述重传数据帧对应的第二确定消息帧之间的短帧间间隔。
  52. 根据权利要求46至50任一项所述的装置，其中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长的表达式包括：
    2*ACK+数据帧长度+2*SIFS
    其中，所述2*ACK表示所述第一确定消息帧传输时长和所述重传数据 帧对应的第二确定消息帧的传输时长；所述数据帧长度表示当所述数据帧为单播数据帧时，重传一个所述单播数据帧的传输时长；2*SIFS表示两个短帧间间隔。
  53. 根据权利要求46至50任一项所述的装置，其中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长的表达式包括：
    2*BA+n*数据块长度+(1+n)*SIFS
    其中，所述2*BA表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述n*数据块长度表示当所述数据帧为连续数据帧时，重传所述连续数据帧中接收失败的n个数据块的传输时长；(1+n)*SIFS表示n+1个短帧间间隔。
  54. 根据权利要求46至50任一项所述的装置，其中，所述第三确定模块，包括：
    第五确定子模块，配置为根据所述第一确认消息帧媒体访问控制MAC帧头中的持续时间域的指示，确定继续占用传输连接的所述持续时长。
  55. 一种数据传输装置，其中，应用于第三通信设备，所述装置包括：第二接收模块和设置模块，其中，
    所述第二接收模块，配置为接收第一确认消息帧；
    所述设置模块，配置为根据所述第一确认消息帧中持续时长指示信息所指示的继续占用传输连接的持续时长，设置网络分配矢量NAV，其中，所述持续时长指示信息是基于多传输连接传输中数据帧的接收状况的。
  56. 根据权利要求55所述的装置，其中，
    当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长包括：重传数据帧的传输时长。
  57. 根据权利要求56所述的装置，其中，所述持续时长指示信息指示的所述持续时长还包括以下至少之一：
    第一确定消息帧的传输时长；
    所述重传数据帧对应的第二确定消息帧的传输时长。
  58. 根据权利要求56所述的装置，其中，
    当所述数据帧为单播数据帧时，所述重传数据帧的传输时长包括：重传一个所述单播数据帧的传输时长。
  59. 根据权利要求56所述的装置，其中，
    当所述数据帧为连续数据帧时，所述第一确定消息帧为块确定消息帧；
    所述重传数据帧的传输时长包括：重传所述连续数据帧中接收失败的n个数据块的传输时长。
  60. 根据权利要求59所述的装置，其中，所述持续时长指示信息指示的所述持续时长还包括：所述数据块中相邻两个所述数据块之间的短帧间间隔。
  61. 根据权利要求56至60任一项所述的装置，其中，所述持续时长指示信息指示的所述持续时长还包括：所述第一确定消息帧和所述重传数据帧之间的短帧间间隔；和所述重传数据帧与所述重传数据帧对应的第二确定消息帧之间的短帧间间隔。
  62. 根据权利要求56至60任一项所述的装置，其中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长的表达式包括：
    2*ACK+数据帧长度+2*SIFS
    其中，所述2*ACK表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述数据帧长度表示当所述数据帧为单播数据帧时，重传一个所述单播数据帧的传输时长；2*SIFS表示两个短帧间间隔。
  63. 根据权利要求56至60任一项所述的装置，其中，当所述数据帧接收失败时，所述持续时长指示信息指示的所述持续时长的表达式包括：
    2*BA+n*数据块长度+(1+n)*SIFS
    其中，所述2*BA表示所述第一确定消息帧传输时长和所述重传数据帧对应的第二确定消息帧的传输时长；所述n*数据块长度表示当所述数据帧为连续数据帧时，重传所述连续数据帧中接收失败的n个数据块的传输时长；(1+n)*SIFS表示n+1个短帧间间隔。
  64. 根据权利要求55至60任一项所述的装置，其中，所述设置模块，包括：
    第一设置子模块，配置根据所述第一确认消息帧媒体访问控制MAC帧头中的持续时间域所指示的继续占用所述传输连接的所述持续时长，设置所述NAV
    或，
    第二设置子模块，配置为根据所述第一确认消息帧物理帧头中的长度域所指示的继续占用所述传输连接的所述持续时长，设置所述NAV。
  65. 根据权利要求55至60任一项所述的装置，其中，所述设置模块，包括：
    第三设置子模块，配置为响应于所述持续时长大于所述NAV指示的在所述传输连接保持静默的避让时长，采用所述持续时长更新所述避让时长。
  66. 根据权利要求55至60任一项所述的装置，其中，所述设置模块，包括：
    第四设置子模块，配置为响应于所述持续时长小于或等于所述NAV指示在所述传输连接保持静默的避让时长，保持所述NAV。
  67. 一种数据传输装置，包括处理器、存储器及存储在存储器上并能够有所述处理器运行的可执行程序，其中，所述处理器运行所述可执行程序时执行如权利要求1至11、或12至21、或22至33任一项所述数据传输方法的步骤。
  68. 一种存储介质，其上存储由可执行程序，其中，所述可执行程序被处理器执行时实现如权利要求1至11、或12至21、或22至33任一项所述数据传输方法的步骤。
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