WO2016119624A1

WO2016119624A1 - Data transmission method and apparatus thereof

Info

Publication number: WO2016119624A1
Application number: PCT/CN2016/071550
Authority: WO
Inventors: 张铭君; 陈辰; 詹焕裕
Original assignee: 阿里巴巴集团控股有限公司; 张铭君; 陈辰; 詹焕裕
Priority date: 2015-01-30
Filing date: 2016-01-21
Publication date: 2016-08-04
Also published as: CN105991214A; CN105991214B

Abstract

Disclosed in the present application are a data transmission method and an apparatus thereof, and the method comprises: receiving a wireless frame; determining the packet length of the wireless frame, and the bit sequence corresponding to the packet length of the wireless frame includes a serial number domain and a data domain, and the bit number of the serial number domain is at least greater than 3; determining whether the bit sequence corresponding to the packet length of the wireless frame is used to carry data according to the bit value of the serial number domain and/or the data domain in the bit sequence corresponding to the packet length of the wireless frame; if it is, determining the data carried by the bit sequence corresponding to the packet length of the wireless frame according to the bit value of the data domain in the bit sequence corresponding to the packet length of the wireless frame. The application could realize data transmission through the bit sequence corresponding to the packet length of the wireless frame, such that the receiving side could obtain the required data by parsing according to the packet length information of the wireless frame.

Description

Data transmission method and device thereof

Technical field

The present application relates to the field, and in particular, to a data transmission method and apparatus thereof.

Background technique

The terminal device can access the Internet through the access device, thereby implementing remote control or management of the terminal device. Different terminal devices can also be connected to the access device to access the wireless network, such as accessing the wireless local area network. The terminal device may be a mobile phone, or a smart home device, or an embedded device. The access device may be a wireless router or a home gateway or a mobile terminal. The terminal device can be connected to the access device by using a wireless access method. For example, a Wi-Fi module can be set on the terminal device, and the access device is connected through the Wi-Fi mode.

The terminal device needs to obtain the account information of the wireless local area network, and use the account information to establish a connection with the access device. The account information of the wireless local area network may include an SSID (Service Set Identifier) and an access password of the wireless local area network.

If the terminal device, such as most smart home devices or embedded devices, does not have input devices such as a keyboard and a screen, it cannot input the account information of the wireless local area network by manual input, and can only obtain wireless by interacting with other devices. LAN account information. However, according to the 802.11 protocol, the account information of the WLAN, especially the access password, is carried in the frame body (also called the payload) portion of the radio frame, and the data carried by the payload portion of the radio frame is encrypted. For a terminal device without a keyboard and a screen, the data carried by the payload portion of the wireless frame cannot be decrypted, so the account information of the wireless local area network cannot be obtained, and thus the access device cannot be connected, and the wireless local area network cannot be accessed.

It can be seen that there is a need for a solution that can obtain the required data without having to parse the payload portion of the radio frame.

Application content

An embodiment of the present application provides a data transmission method and an apparatus thereof for implementing transmission of data by a bit sequence corresponding to a packet length of a radio frame, so that a receiver can acquire a required bit sequence according to a packet length of a radio frame. data.

A data transmission method provided by an embodiment of the present application includes:

Receiving a radio frame;

Determining a packet length of the radio frame, where a bit sequence corresponding to a packet length of the radio frame includes a sequence number field and a data field, where the number of bits in the sequence number field is at least greater than 3;

Determining, according to the value of the sequence number field and/or the bit field of the data field in the bit sequence corresponding to the packet length of the radio frame, whether the bit sequence corresponding to the packet length of the radio frame is used to carry data;

If the determination is yes, the data carried by the bit sequence corresponding to the packet length of the radio frame is determined according to the value of the bit of the data field in the bit sequence corresponding to the packet length of the radio frame.

A data transmission method provided by another embodiment of the present application includes:

Obtaining data that needs to be carried by a bit sequence corresponding to a packet length of the radio frame;

Determining, according to the obtained data, a bit sequence corresponding to a packet length of the radio frame, and causing the data field in the bit sequence corresponding to the packet length of the radio frame to carry the data, where a bit corresponding to a packet length of the radio frame The sequence includes a sequence number field and a data field, and the number of bits in the sequence number field is at least greater than 3;

Generating the radio frame according to a packet length of the radio frame;

Sending the radio frame.

The data transmission device provided by the embodiment of the present application includes:

a receiving module, configured to receive a wireless frame;

a first determining module, configured to determine a packet length of the radio frame, where a bit sequence corresponding to a packet length of the radio frame includes a sequence number field and a data field, where the number of bits in the sequence number field is at least greater than 3;

a second determining module, configured to determine, according to a value of a sequence number field and/or a bit field of a data field in a bit sequence corresponding to a packet length of the radio frame, whether a bit sequence corresponding to a packet length of the radio frame is used Carrying data;

a third determining module, configured to determine, according to a value of a bit of a data field in a bit sequence corresponding to a packet length of the radio frame, in a case that the second determining module determines to be YES The data carried by the bit sequence corresponding to the packet length.

A data transmission apparatus provided by another embodiment of the present application includes:

An acquiring module, configured to acquire data that needs to be carried by a bit sequence corresponding to a packet length of a radio frame;

a determining module, configured to determine, according to the acquired data, a bit sequence corresponding to a packet length of the radio frame, so that the data field in the bit sequence corresponding to the packet length of the radio frame carries the data, where the radio frame The bit sequence corresponding to the packet length includes a sequence number field and a data field, and the number of bits in the sequence number field is at least greater than 3;

a generating module, configured to generate the radio frame according to a packet length of the radio frame;

And a sending module, configured to send the wireless frame.

In the foregoing embodiment of the present application, since the data domain of the bit sequence corresponding to the packet length of the radio frame carries data that needs to be sent to the access side, the receiver can acquire the required data according to the bit sequence corresponding to the packet length of the radio frame. . Especially in the scenario of accessing the wireless local area network, the sender can send the account information of the wireless local area network to the receiver according to the bit sequence corresponding to the packet length of the wireless frame, so that the receiver obtains the account information of the wireless local area network, thereby enabling wireless access. local area network. In addition, since the bit number of the sequence number field in the bit sequence corresponding to the packet length of the radio frame is greater than 3, since the sequence number field in the bit sequence corresponding to the packet length can be used to identify the sequence number of the radio frame in the group, the length is passed. The sequence number field is such that each packet contains a larger number of radio frames, that is, a radio frame as a packet interval can be transmitted every time a larger number of radio frames are separated, and the number of radio frames as a packet interval is smaller. The more it is possible to reduce the reception efficiency of the receiver due to the loss of the radio frame as the packet interval.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following drawings will be briefly described in the description of the embodiments. It is obvious that the drawings in the following description are only some embodiments of the present application, A person of ordinary skill in the art, without premise of creative labor Further drawings can also be obtained from these figures.

1 is a schematic structural diagram of a radio frame in the prior art;

2 is a schematic diagram of distribution of data frames and packet frames in an embodiment of the present application;

FIG. 3 is a schematic diagram of a format of a bit sequence corresponding to a packet length of a radio frame according to an embodiment of the present disclosure;

4 is a schematic flowchart of a data transmission method of a receiver according to an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of carrying a plurality of byte data by using a bit sequence corresponding to a packet length of a plurality of data frames according to an embodiment of the present disclosure;

FIG. 6 is a schematic flowchart of a data transmission method of a sender according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present disclosure;

FIG. 8 is a second schematic structural diagram of a data sending apparatus according to an embodiment of the present disclosure.

detailed description

The present application will be further described in detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present application, but not all embodiments. . All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

The following is a description of some of the various embodiments of the present application, which are intended to provide a basic understanding of the application, and are not intended to identify key or critical elements of the application or the scope of the invention. According to the technical solution of the present application, other implementations can be obtained by replacing each other without changing the spirit of the present application.

As mentioned above, the terminal device cannot establish communication directly with other devices in the wireless network, such as mobile phones, before accessing the wireless network, nor can it access the Internet through the access device. However, the Wi-Fi module of the terminal device can enter the listening mode, and in the listening mode, the wireless frame sent by the peripheral device can be monitored. The payload part of the radio frame is encrypted. If the terminal device cannot decrypt the payload part, the data carried by the payload part cannot be obtained, but the packet length of the entire radio frame can be calculated, and the packet of the radio frame can be calculated. The length is the total length of the radio frame. According to this feature, the implementation of the present application provides a data transmission scheme.

In the data transmission scheme provided by the embodiment of the present application, the sender transmits the data to be transmitted in a bit sequence corresponding to the packet length of the radio frame, and after receiving the radio frame, the receiver calculates the packet length of the radio frame, according to the packet. The long corresponding bit sequence can acquire the required data.

Taking the embodiment of the present application as an example in a smart home scenario, a mobile terminal, such as a mobile phone, can be used as a sender data transmission device, and a smart home device or an embedded device that does not have an input device such as a keyboard and a screen is used as a receiver. a data transmission device, wherein the sender data transmission device carries an access password of the wireless local area network through a bit sequence corresponding to a packet length of the radio frame, and the receiver data transmission device calculates a packet length of the radio frame according to the received radio frame, according to the packet length The corresponding bit sequence acquires a wireless local area network access password, thereby accessing the wireless local area network according to the access password, thereby solving the problem that the smart home device or the embedded device accesses the wireless local area network.

The radio frame described in the embodiment of the present application follows a wireless communication protocol. This document describes an example in which a radio frame follows the 802.11 series protocol. The radio frame described below is a radio frame that complies with the 802.11 series protocol, unless otherwise stated.

FIG. 1 exemplarily shows the structure of a radio frame defined by the 802.11 protocol. The frame header part carries control information, protocol information, and address information, and the frame entity part is a payload part of the radio frame, and is used to carry data content. The FCS (Frame Check Sequence) field is used to carry the frame check. Information to ensure the integrity of the wireless frame. The total length occupied by the frame header portion, the frame entity portion, and the FCS portion is called the packet length of the radio frame. The packet length of the radio frame can be calculated by the application layer of the receiver data transmission device.

It should be noted that the radio frame described in the embodiment of the present application is not limited to the structure shown in FIG. 1.

Radio frames can be transmitted in packets, and multiple radio frames can be included in one packet. For convenience of description, in the embodiment of the present application, a radio frame in one packet is referred to as a data frame. A radio frame needs to be sent between two packets for interval. In this embodiment of the present application, a radio frame inserted between two packets is referred to as a packet frame. The packet frame is used to control the starting position of the next packet, that is, the data frame for synchronizing the next packet. The location to prevent the receiver from being out of order.

In the data frame described in the embodiment of the present application, the bit sequence corresponding to the packet length is used to carry data, such as an account for accessing the wireless network; and the bit sequence corresponding to the packet length of the packet frame is used to carry the packet number. .

It should be noted that the manner of distinguishing the radio frames is only used in the embodiments of the present application, and the purpose is to facilitate the description, and does not mean to modify the radio frame classification defined by the 802.11 protocol or other communication protocols.

FIG. 2 exemplarily shows the distribution of data frames and packet frames.

In the embodiment of the present application, a radio frame that needs to carry data by using a bit sequence corresponding to a packet length, for example, a radio frame that needs to use a bit sequence corresponding to a packet length to carry an access password of a wireless local area network, and a packet of the radio frame. The format of the long corresponding bit sequence is defined. Specifically, the bit sequence corresponding to the packet length may include a sequence number field and a data field. If the radio frame is a data frame, the value of the bit field in the bit sequence corresponding to the packet length is used to indicate the sequence number of the data frame in the packet to which it belongs, and the value of the bit in the data field is used to indicate that The data carried by the bit sequence corresponding to the packet length; if the radio frame is a packet frame, the value of the bit field in the bit sequence corresponding to the packet length may be used as the identifier of the packet frame, and the value of the bit in the data field Used to indicate the group number.

Preferably, the sequence number field in the bit sequence corresponding to the packet length of the radio frame in the embodiment of the present application may be located in the high bit position portion of the bit sequence corresponding to the packet length, and the data field in the bit sequence corresponding to the packet length may be located. The low bit portion of the bit sequence corresponding to the packet length. The definition of the sequence number field and the data field is only an example, and the embodiment of the present application does not limit this.

According to the 802.11 protocol, the packet length of a radio frame is usually less than 1500 bytes due to the limitation of the length of the MTU (the maximum transmission unit of the data packet agreed upon by the communication protocol), and the hexadecimal representation of the decimal 1500 is 0x5DC, and the 11-bit width is used. It can be used to indicate the packet length, that is, the bit sequence corresponding to the packet length of the radio frame has a length of at least 11 bits.

For example, the bit sequence length corresponding to the packet length of the radio frame is 11 bits. In the embodiment of the present application, the bit sequence corresponding to the packet length is used for the radio frame that needs to carry the data with the bit sequence corresponding to the packet length. The upper 4 bits are used as the sequence number field, and the lower 7 bits of the bit sequence corresponding to the packet length are used as the data field.

The value of 4 bits is {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15}, expressed as [0,15]. Herein, the range of values is represented by [a1, a2], the lower limit of the range is a1, the upper limit is a2, and a1 and a2 are included, that is, an integer ranging from a1 to a2. Considering that the packet length of a radio frame is usually limited to 1500=0x5DC or less, the value of the upper 4 bits is [0, 11].

Considering that the bit in the sequence number field takes the value of all zeros, the radio frame may generate interference with other radio frames, which is disadvantageous for the data reception of the receiver. Therefore, in the embodiment of the present application, the value of the sequence number field is used. 0 can be excluded from the range. For example, in a preferred solution, for a data frame, a sequence number field corresponding to a packet length has a value range of [1, 10]; for a packet frame, a packet length corresponds to a bit sequence. The range of the sequence number field is [11]. The value range of the 7-bit data field is [0, 127]. The value range of the sequence number field in the bit sequence corresponding to the packet length of the data frame does not overlap with the value range of the sequence number field in the bit sequence corresponding to the packet length of the packet frame, and therefore may correspond to the packet length. The value of the bit field of the sequence number field in the bit sequence distinguishes between the data frame and the packet frame.

Generally, data that needs to be carried by using a bit sequence corresponding to a packet length may be an ASCII character, such as account information of a wireless local area network. Since the valid ASCII characters of the data are only a subset of the ASCII character set, the ASCII characters in the subset have a value range of [32, 126].

According to the foregoing feature of the value of the data field in the bit sequence corresponding to the packet length of the data frame, in the embodiment of the present application, the sequence number field in the bit sequence corresponding to the packet length of the data frame and the packet frame may be adopted by the following solutions. And the value range of the data field is defined. For the convenience of description, the data frame is represented by Fram_data, the packet frame is represented by Fram_group, the sequence number field in the bit sequence corresponding to the packet length is represented by field_index, and the bit corresponding to the packet length is represented by field_data. The data field in the sequence.

plan 1

Fram_data: field_index has a value range of [1, 10], and field_data has a value range of [32, 126].

Fram_group: field_index takes any integer in the range [11, 15], preferably takes a value of 11, and field_data takes the value range [0, 31].

If scheme 1 is adopted, the sender data transmission device can directly determine the binary value of the ASCII character. The value of the bit of the data field in the bit sequence corresponding to the packet length is received, and the data transmission means of the receiver can directly obtain the corresponding ASCII character according to the value of the bit of the data field in the bit sequence corresponding to the packet length.

Scenario 2

Fram_data: field_index has a value range of [1, 11], a preferred range is [1, 10], and field_data has a value range of [0, 94].

Fram_group: field_index takes any integer within the range [1, 11], preferably takes a value of 11, and field_data takes the range [95,126]

If the scheme 2 is adopted, the sender data transmission device may subtract the value corresponding to the ASCII character by 32, and take the value corresponding to the subtracted value as the bit of the data field in the bit sequence corresponding to the packet length. The value of the data transmission device of the receiver can add 32 bits of the data field in the bit sequence corresponding to the packet length, and obtain the corresponding ASCII character according to the value obtained after the addition.

The definition scheme of the value range of the above sequence number field and the data field is only an example, and the embodiment of the present application is not limited to the above solution. For example, the value range of the sequence number field in the bit sequence corresponding to the packet length of the data frame and the packet frame is allowed to overlap, but the value range of the data field cannot overlap, so that the data can be distinguished according to the value range of the data field. Frame and packet frame; or, the range of values of the data fields in the bit sequence corresponding to the packet length of the data frame and the packet frame are allowed to overlap, but the value range of the sequence number field cannot overlap, and thus, according to the sequence number field The range of values is used to distinguish between data frames and packet frames.

3a and FIG. 3b exemplarily show that the length of the bit sequence corresponding to the packet length is 11 bits, and the number of bits in the sequence number field is 4, and the number of bits in the data field is 7. The packet length of the radio frame corresponds to the format of the bit sequence. FIG. 3a exemplarily shows the format of a bit sequence corresponding to the packet length of the data frame, and the data field in the bit sequence corresponding to the packet length of one data frame can be used to carry an ASCII character. Fig. 3b exemplarily shows the format of a bit sequence corresponding to the packet length of a packet frame.

In FIG. 3a, the sequence number field of the bit sequence corresponding to the packet length of the data frame occupies 4 bits of the high bit portion of the bit sequence, and the value range is defined as [1, 10], and the data field occupies the bit sequence. The 7 bits of the low bit portion are in the range [32, 126].

The format definition of the bit sequence corresponding to the packet length of the data frame can be expressed as:

Len=(index<<7)+data,index=[1,2,3,4,5,6,7,8,9,10]

126>=data>=32

Where len represents the packet length of the data frame; index represents the relative sequence number of the data frame, that is, the sequence number or position of the data frame within the belonging packet; and data represents the data in the data domain, that is, data carried by the bit sequence corresponding to the packet length, The data field in the bit sequence corresponding to the packet length of a data frame can carry one byte of data, such as an ASCII character. In the case of using the bit sequence corresponding to the packet length to carry the account information for accessing the wireless network, 126>=data>=32 may be defined because the ASCII character corresponding to the range is the ASCII character used for the account information.

In FIG. 3b, the sequence number field in the bit sequence corresponding to the packet length of the packet frame occupies 4 bits of the high bit portion of the bit sequence, and the defined value is fixed to 11, and the data field occupies the low bit portion of the bit sequence. 7 bits, the value range is [0, 31].

The format definition of the bit sequence corresponding to the packet length of the packet frame can be expressed as:

Len=(fixed_index<<7)+base_index

Where len represents the packet length of the packet frame, fixed_index represents the fixed sequence number used by the packet frame, and the value is 11; base_index represents the packet number, and the value range is [0, 31].

According to FIG. 3a and FIG. 3b, in the case where the definition 126>=data>=32, since the value range of the base_index is [0, 31], there is no overlap with the value range of the data, so the packet according to the radio frame can be The value of the bit of the data field in the long corresponding bit sequence distinguishes between the data frame and the packet frame. Certainly, in the case that the values of the bits of the sequence number field in the bit sequence corresponding to the packet length of the data frame and the packet frame do not overlap, the data frame and the packet frame may be distinguished according to the value of the bit field of the sequence number field.

It can be seen that the purpose of hiding the data and the sequence number into the bit sequence corresponding to the packet length of the radio frame can be achieved by using the above coding format.

The above description is only taking the length of the bit sequence corresponding to the packet length of the radio frame as 11 bits. The length of the bit sequence corresponding to the packet length of the radio frame may also be greater than 11 bits. In this case, the bit sequence corresponding to the packet length. The high N bit in the middle can be used as the sequence number field, and N is an integer greater than 4 in the bit sequence. The lower M bits can be used as the data field, and M is an integer greater than or equal to 7.

According to the format definition of the bit sequence corresponding to the packet length of the radio frame, the flow of the data transmission method provided by the embodiment of the present application is described in detail below with reference to FIG. 3 and FIG. 4 respectively.

FIG. 4 is a schematic diagram of a flow of a data transmission method according to an embodiment of the present application. This flow describes the processing of the data receiver, which can be performed by the data transmission device as the data receiver. The data transmission device is provided with a wireless module, such as a Wi-Fi module, capable of receiving and processing radio frames. For example, the data transmission device may be a smart home device or an embedded device.

As shown, the process can include the following steps:

Step 401: Receive a radio frame.

Step 402: Determine a packet length of the radio frame; a bit sequence corresponding to a packet length of the radio frame includes a sequence number field and a data field, and the bit number of the sequence number field is at least greater than 3;

Step 403: Determine, according to the value of the sequence number field and/or the bit field of the data field in the bit sequence corresponding to the packet length of the radio frame, whether the bit sequence corresponding to the packet length of the radio frame is used to carry data.

Step 404: If the determination is yes, determining the data carried by the bit sequence corresponding to the packet length of the radio frame according to the value of the bit of the data field in the bit sequence corresponding to the packet length of the radio frame.

Further, if it is determined in step 403 that the bit sequence corresponding to the packet length of the radio frame is used to carry the packet number, data reception and ordering may be performed according to the radio frame.

In the radio frame described in the above process, the structure of the bit sequence corresponding to the packet length can be as described above. For example, the sequence number field in the bit sequence corresponding to the packet length is located in the high bit portion of the bit sequence, and the data field in the bit sequence corresponding to the packet length is located in the low bit portion of the bit sequence. Preferably, the number of bits in the sequence number field is 4, and the number of bits in the data field is 7.

In step 401, since the wireless module is disposed in the data transmission device, the wireless frame transmitted by the peripheral device can be monitored.

In step 402, the data transmission apparatus as the receiver can calculate the packet length of the radio frame at the application layer, thereby obtaining a bit sequence corresponding to the packet length.

As described above, the data frame and the packet frame may be distinguished according to the value of the bit field of the sequence number field in the bit sequence corresponding to the packet length, or may be determined according to the value of the bit field of the data field in the bit sequence corresponding to the packet length. To distinguish between the data frame and the packet frame, correspondingly, in step 403, the data transmission device may determine whether the radio frame is a data frame in one of the following manners:

Mode 1: If the value of the bit field in the bit sequence corresponding to the packet length of the radio frame is within the first value range, determining that the bit sequence corresponding to the packet length of the radio frame is used to carry data, The value of the bit field of the sequence number field in the bit sequence corresponding to the packet length of the radio frame is used to identify the sequence number of the radio frame in the group to which the radio frame belongs.

Further, if the value of the bit field of the sequence number field in the bit sequence corresponding to the packet length of the radio frame is within the second value range or is the first value, determining the bit corresponding to the packet length of the radio frame The sequence is used to carry a packet number, where the second value range does not overlap with the first value range, and the first value is not in the first value range.

For example, the format of the bit sequence corresponding to the packet length of the radio frame shown in FIG. 3a and FIG. 3b is taken as an example, if the bit length of the sequence number field in the bit sequence corresponding to the packet length of the radio frame is [1] In the range of 10, the radio frame is determined to be a data frame. If the bit length of the sequence number field in the bit sequence corresponding to the packet length of the radio frame is 11, the radio frame is determined to be a packet frame.

Mode 2: If the value of the bit of the data field in the bit sequence corresponding to the packet length of the radio frame is in the third value range, determining that the bit sequence corresponding to the packet length of the radio frame is used to carry data, The third value range is a value range corresponding to data that needs to be carried by a bit sequence corresponding to a packet length of the radio frame. Preferably, in this case, a fixed value is selected as the value of the bit field of the sequence number field in the bit sequence corresponding to the packet length of the packet frame.

Further, if the value of the bit of the data field in the bit sequence corresponding to the packet length of the radio frame is in the fourth value range, determining that the bit sequence corresponding to the packet length of the radio frame is used to carry the packet number The fourth value range is a value range of the packet sequence number, and the third value range does not overlap with the fourth value range.

For example, the format of the bit sequence corresponding to the packet length of the radio frame shown in FIG. 3a and FIG. 3b is For example, if the value of the bit of the data field in the bit sequence corresponding to the packet length of the radio frame is in the range of [32, 126], it is determined that the radio frame is a data frame, if the packet length of the radio frame is in the bit sequence corresponding to If the value of the bit of the data field is in the range [0, 31], it is determined that the radio frame is a packet frame.

In step 404, the data transmission apparatus as the receiver may determine data carried by the bit sequence corresponding to the packet length of the data frame by using a data field in a bit sequence corresponding to the packet length of the data frame. The value of the bit is determined, and the corresponding ASCII character is determined, and the determined ASCII character is determined as data carried by the bit sequence corresponding to the packet length of the data frame.

The data field in the bit sequence corresponding to the packet length of a data frame can usually carry one byte, such as an ASCII character. If the data carried by the bit sequence corresponding to the packet length needs to contain multiple bytes, such as multiple ASCII characters, Then, the bit sequence corresponding to the packet length of the corresponding number of data frames can be used to carry the data of the multiple bytes. FIG. 5 exemplarily shows a schematic diagram of carrying a plurality of byte data by a bit sequence corresponding to a packet length of a plurality of data frames, where byte 1 to byte n represent data to be transmitted through a packet length of the radio frame, For example, a byte can represent an ASCII character.

In the embodiment of the present application, the value of the bit of the sequence number field in the bit sequence corresponding to the packet length of the data frame may be determined by using the value of the bit field in the bit sequence corresponding to the packet length of the data frame. The order of the data frames splicing the data carried by the bit sequences corresponding to the packet lengths of the data frames in this order, thereby solving the problem of inaccurate data caused by the disorder of receiving the wireless frames.

Specifically, the data transmission apparatus as the receiver may determine the sequence number of the data frame in the belonging packet according to the value of the bit position of the sequence number field in the bit sequence corresponding to the packet length of the data frame, according to the data frame in the group to which the data frame belongs. The sequence number determines the position of the data carried by the data field in the bit sequence corresponding to the packet length of the data frame in the entire data sequence.

Further, the data transmission apparatus as the receiver may determine the packet number according to the value of the bit of the data field in the bit sequence corresponding to the packet length of the packet frame, and determine the absolute value of the data in the entire data sequence according to the packet number. Position, or determine the starting offset of the next packet data.

For example, when the data transmission device as the receiver analyzes the data, one can be determined according to the following formula. The final location of the data:

Pos=(base_index*group_nums)+index

Where pos represents the final location of the packet and group_nums represents the number of data frames within a packet. The receiver determines the final location of the data based on base_index and index.

Preferably, the foregoing embodiment may be applied to a scenario of wireless network access, in which the data that needs to be carried by the bit sequence corresponding to the packet length of the radio frame may include: an account for performing wireless network access. Information, or access password of the wireless network, such as an access password of a wireless local area network.

For example, in the case of transmitting 100 bytes of data through a bit sequence corresponding to the packet length of the radio frame, according to the above embodiment of the present application, each time 10 data frames are transmitted, one packet frame needs to be transmitted, and a total of 10 packet frames are required. However, if the number of bits of the sequence number field in the bit sequence corresponding to the packet length of the radio frame is less than or equal to 3, for example equal to 3, 25 packet frames are required. The determination of the location of the data frame is crucial to the receiver, because the wireless frame transmission process is easy to lose, and it is difficult for the receiver to collect the information at a time. In the cyclic receiving process, each time a data is received, the location of the data needs to be determined. Because the reliability of the wireless transmission is not high, the loss of the packet frame may cause confusion in the data analysis of the previous packet, which affects the efficiency of the receiver. Therefore, the embodiment of the present application reduces the number of packet frames, and thus can be guaranteed to a certain extent. Receiver's reception reliability.

FIG. 6 is a schematic diagram of a flow of a data transmission method according to an embodiment of the present application. This flow describes the processing of the data sender, which can be performed by the data transmission device as the data sender. The data transmission device is provided with a wireless module, such as a Wi-Fi module, capable of transmitting and processing radio frames. For example, the data transmission device may be a mobile terminal or may be a wireless router or a home gateway or the like.

As shown in FIG. 6, the process may include the following steps:

Step 601: Acquire data that needs to be carried by a bit sequence corresponding to a packet length of the radio frame.

Step 602: Determine, according to the acquired data, a bit sequence corresponding to a packet length of the radio frame, so that a data field in a bit sequence corresponding to a packet length of the radio frame carries the data, where a packet length of the radio frame The corresponding bit sequence includes a sequence number field and a data field, and the number of bits in the sequence number field is at least greater than 3;

Step 603: Generate the radio frame according to a packet length of the radio frame.

Step 604: Send the radio frame.

In the radio frame described in the above process, the structure of the bit sequence corresponding to the packet length can be as described above. For example, the sequence number field is located in the high bit portion of the bit sequence corresponding to the packet length, and the data field is located in the low bit portion of the bit sequence corresponding to the packet length. Preferably, the number of bits in the sequence number field is 4, and the number of bits in the data field is 7.

In step 601, the data transmission device as the sender can acquire data that needs to be carried by the bit sequence corresponding to the packet length of the radio frame, and the data can be one byte in a byte sequence, such as in an ASCII string. An ASCII character.

In step 602, the data transmission apparatus as the sender may convert the data carried by the bit sequence corresponding to the packet length of the radio frame into a value corresponding to the ASCII character, according to the value corresponding to the converted ASCII character. Determining a value of a data field in a bit sequence corresponding to a packet length of the radio frame, so that a data field in a bit sequence corresponding to a packet length of the radio frame carries the data.

In step 603, the data transmission apparatus as the sender can generate a radio frame of a corresponding length according to the bit sequence corresponding to the packet length determined in step 602. Usually, the header portion of a wireless frame The length of the frame check portion is fixed, so that the length of the generated frame portion can be made equal to the length represented by the bit sequence corresponding to the packet length determined in step 602 by adjusting the length of the frame entity portion.

Further, in step 602, the data transmission apparatus as the sender may further determine the value of the bit field of the sequence number field in the bit sequence corresponding to the packet length of the radio frame according to the sequence number of the radio frame in the belonging packet. The value of the bit in the sequence number field is in the first value range, the first value range does not overlap with the second value range, or the first value range does not include the first value a value, wherein, if the value of the bit field of the sequence number field in the bit sequence corresponding to the packet length of the radio frame is within the second value range or is the first value, the packet length of the radio frame corresponds to The bits of the data field in the bit sequence are used to carry the packet number.

For example, taking the format of the bit sequence corresponding to the packet length of the radio frame shown in FIG. 3a and FIG. 3b as an example, the data transmission apparatus as the sender can set the packet length according to the sequence number of the current data frame in the belonging packet. The value of the bit of the sequence number field in the bit sequence is combined with the value of the bit of the data field in the bit sequence to obtain the value of the bit sequence, that is, the packet length of the current data frame.

Further, the data transmission apparatus as the sender may further transmit the following radio frame before or after transmitting the radio frame: the value of the bit of the data field in the bit sequence corresponding to the packet length of the radio frame is taken in the fourth Within the value range, the fourth value range is a value range of the packet sequence number, the fourth value range does not overlap with the third value range, and the third value range is a packet that needs to use a radio frame. The range of values corresponding to the data carried by the corresponding bit sequence.

For example, taking the format of the bit sequence corresponding to the packet length of the radio frame shown in FIG. 3a and FIG. 3b as an example, when the data transmission apparatus as the sender determines to transmit the packet frame, the packet number of the packet frame, the packet number is determined. The value ranges from [0, 31], and the value of the bit of the data field in the bit sequence corresponding to the packet length of the packet frame is set according to the packet number. The value of the bit field of the sequence number in the bit sequence corresponding to the packet length of the packet frame is set to 11 or set to any integer within the range of [11, 16], so as to identify the radio frame as a packet frame. The bit range of the data field in the bit sequence corresponding to the packet length of the data frame is [32, 126], and the ratio of the data field in the bit sequence corresponding to the packet length of the packet frame. The range of values of the special bits does not overlap.

It should be noted that, in the embodiment of the present application, various required data may be carried by the bit sequence corresponding to the packet length and sent to the receiver. For example, the data includes, but is not limited to, the number of data bytes (ie, the total length), the flag (flag), the length of the SSID, the SSID, the length of the access password, the access password, the frame check sequence, and the like. The number of data bytes (total length), the flag (flag), the length of the SSID, and the length of the access password can occupy 1 byte respectively, and the frame check sequence can occupy 2 bytes, SSID and access. The password can occupy multiple bytes each.

Wherein, the sequence of flag bits of the radio frame can be defined as follows:

Bit7: fixed to 0;

Bit6 to bit5: reserved field;

Bit4 to bit3: protocol version, current version 00;

Bit2 to bit1: payload information encryption mode, 00 means no encryption, 01 means stream cipher;

Bit0: Whether to include the SSID.

For a more clear understanding of the foregoing embodiment of the present application, the bit sequence format corresponding to the packet length of the radio frame shown in FIG. 3a and FIG. 3b is taken as an example to describe the packet length of the radio frame in the scenario of wireless network access. The corresponding bit sequence carries the process of accessing account information for the wireless local area network.

The scenario is: the smart home device obtains the account information of the wireless local area network through the mobile terminal to access the wireless local area network.

The process can be described as follows: an application is installed on the mobile terminal, and the function of the application is that the account information of the wireless local area network can be sent through the bit sequence corresponding to the packet length of the wireless frame in the manner of the foregoing embodiment of the present application. A corresponding application is installed on the smart home device, and the function of the application is that the wireless frame can be received in the manner of the foregoing embodiment of the present application, and the account information of the wireless local area network carried by the bit sequence corresponding to the packet length of the wireless frame is obtained.

After the application installed on the mobile terminal and the smart home device is turned on, the mobile terminal acquires account information of the wireless local area network, where the account information includes: the SSID is 1234, and the access password is abcd. The account information can be obtained by the mobile terminal in various ways, for example, the account information is cached on the mobile terminal or the account information is manually input.

The mobile terminal sequentially transmits 18 radio frames, wherein each 10 radio frames transmits a radio frame for spacing packets. The sender and the receiver may agree that the bit sequences corresponding to the packet lengths of the second to fifth radio frames are respectively used to carry the total length information, the length of the flag, the SSID, the length information of the access password, and the subsequent wireless. The bit sequence corresponding to the packet length of the frame is used to transmit the ASCII character of the SSID and the access code in turn, and the bit sequence corresponding to the packet length of the last two radio frames is used to carry the frame check sequence. The radio frames sent by the sender include:

The value of the bit field in the bit sequence corresponding to the packet length of the radio frame 1 is 1011, and the value of the bit in the data field is 0000000, and the value indicates the packet number of the first packet;

The value of the bit field in the bit sequence corresponding to the packet length of the radio frame 2 is 0001, and the value of the bit in the data field is 0001110. The value represents the total length information, and the decimal value is 14 because of the total length. Information, flag, SSID length information, access password length information, frame check sequence, SSID of 4 ASCII characters, and access codes of 4 ASCII characters occupy a total of 14 bytes;

The value of the bit field in the bit sequence corresponding to the packet length of the radio frame 3 is 0010, and the value of the bit in the data field is 0000000, which represents the value of the flag flag bit;

The value of the bit field in the bit sequence corresponding to the packet length of the radio frame 4 is 0011, and the value of the bit in the data field is 0000100, which indicates that the SSID is composed of 4 ASCII characters;

The value of the bit field in the bit sequence corresponding to the packet length of the radio frame 5 is 0100, and the value of the bit in the data field is 0000100, which indicates that the access password is composed of 4 ASCII characters;

The value of the bit field in the bit sequence corresponding to the packet length of the radio frame 6 is 0101, and the value of the bit in the data field is 0110001, which indicates that the first ASCII character of the SSID is 1;

The value of the bit field in the bit sequence corresponding to the packet length of the radio frame 7 is 0110, and the value of the bit in the data field is 0110010, which indicates that the second ASCII character of the SSID is 2;

The value of the bit field in the bit sequence corresponding to the packet length of the radio frame 8 is 0111, and the value of the bit in the data field is 0110011, which indicates that the third ASCII character of the SSID is 3;

The value of the bit field in the bit sequence corresponding to the packet length of the radio frame 9 is 1000, and the value of the bit in the data field is 0110100, which indicates that the fourth ASCII character of the SSID is 4;

The value of the bit field in the bit sequence corresponding to the packet length of the radio frame 10 is 1001, and the value of the bit in the data field is 1100001, which indicates that the first ASCII character of the access password is a;

The value of the bit field in the bit sequence corresponding to the packet length of the radio frame 11 is 1010, and the value of the bit in the data field is 1100010, which indicates that the second ASCII character of the access password is b;

The bit number of the sequence number field in the bit sequence corresponding to the packet length of the radio frame 12 is 1011, and the number is The value of the bit of the field is 0000010, and the value represents the packet number of the second packet;

The bit length of the sequence number corresponding to the packet length of the radio frame 13 is 0001, and the value of the bit of the data field is 1100011, which indicates that the third ASCII character of the access password is c;

The value of the bit field in the bit sequence corresponding to the packet length of the radio frame 14 is 0010, and the value of the bit in the data field is 1100100, which indicates that the fourth ASCII character of the access password is d;

The bit length of the sequence number field in the bit sequence corresponding to the packet length of the radio frame 15 is 0011, and the bit value of the data field is a check value of 7 bits;

The bit length of the sequence number field in the bit sequence corresponding to the packet length of the radio frame 16 is 0100, and the bit value of the data field is a check value of 7 bits.

After receiving the wireless frame, the smart home device separately calculates the packet length of each radio frame, converts the value of the packet length into a binary sequence, and according to the bit length of the data field in the binary sequence corresponding to the packet length of each data frame. The value of the corresponding length information, flag, frame check sequence, and ASCII characters of the SSID and the access code are obtained, and the value of the bit field in the binary sequence corresponding to the packet length of the data frame and the packet frame are The value of the bit of the data field in the binary sequence corresponding to the packet length determines the assembly order of the ASCII characters of the SSID and the access password, thereby obtaining the complete SSID and the access password, and thus the account information can be used to access the wireless local area network. .

Based on the same technical concept, the embodiment of the present application further provides a data transmission device as a data receiver, and a data transmission device as a data sender.

FIG. 7 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present application. The data transmission device can act as a data receiver to perform the aforementioned data transmission process. The data transmission device is provided with a wireless module, such as a Wi-Fi module, capable of receiving and processing radio frames. For example, the data transmission device may be a smart home device or an embedded device.

As shown in the figure, the data transmission device may include: a receiving module 701, a first determining module 702, a second determining module 703, and a third determining module 704, where:

The receiving module 701 is configured to receive a radio frame.

The first determining module 702 is configured to determine a packet length of the radio frame, where a packet length of the radio frame corresponds to The bit sequence includes a sequence number field and a data field, and the number of bits in the sequence number field is at least greater than 3;

The second determining module 703 is configured to determine, according to the value of the sequence number field and/or the bit field of the data field in the bit sequence corresponding to the packet length of the radio frame, whether the bit sequence corresponding to the packet length of the radio frame is used. To carry data;

The third determining module 704 is configured to determine, according to the value of the bit of the data field in the bit sequence corresponding to the packet length of the radio frame, in the case that the second determining module 703 determines that the value is YES. The data carried by the bit sequence corresponding to the packet length.

The sequence number field is located in a high-bit portion of a bit sequence corresponding to a packet length, and the data field is located in a low-bit portion of a bit sequence corresponding to a packet length.

The radio frame is a radio frame defined by the 802.11 protocol, where the number of bits in the sequence number field is 4, and the number of bits in the data field is 7.

The data carried by the bit sequence corresponding to the packet length of the radio frame includes: account information used for performing wireless network access, or an access password of the wireless network.

Preferably, the third determining module 704 is specifically configured to: determine an ASCII character according to a value of a bit of a data field in a bit sequence corresponding to a packet length of the radio frame, and determine the determined ASCII character as the wireless The data carried by the bit sequence corresponding to the packet length of the frame.

Preferably, the second determining module 703 is specifically configured to: if the value of the bit field of the sequence number field in the bit sequence corresponding to the packet length of the radio frame is within the first value range, determine the packet of the radio frame The bit sequence corresponding to the long bit is used to carry data, wherein the value of the bit field of the sequence number field in the bit sequence corresponding to the packet length of the radio frame is used to identify the sequence number of the radio frame in the belonging packet.

Further, the second determining module 703 is further configured to: if the value of the bit field of the sequence number field in the bit sequence corresponding to the packet length of the radio frame is within the second value range or is the first value, determine The bit sequence corresponding to the packet length of the radio frame is used to carry the packet number, where the second value range does not overlap with the first value range, and the first value is not in the first value. Within the scope.

Preferably, the second determining module 703 is specifically configured to: if the value of the bit of the data field in the bit sequence corresponding to the packet length of the radio frame is within a third value range, determine the packet of the radio frame Long pair The bit sequence is used to carry data, and the third value range is a value range corresponding to data to be carried by the bit sequence corresponding to the packet length of the radio frame.

Further, the second determining module 703 is further configured to determine, if the value of the bit of the data field in the bit sequence corresponding to the packet length of the radio frame is within a fourth value range, determine a packet length of the radio frame. The corresponding bit sequence is used to carry the packet number, and the fourth value range is the value range of the packet sequence number, and the third value range does not overlap with the fourth value range.

FIG. 8 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present application. The data transmission device can act as a data sender to perform the aforementioned data transmission process. The data transmission device is provided with a wireless module, such as a Wi-Fi module, capable of transmitting and processing radio frames. For example, the data transmission device may be a mobile terminal or may be a wireless router or a home gateway or the like.

As shown in FIG. 8, the apparatus may include: an obtaining module 801, a determining module 802, a generating module 803, and a sending module 804, where:

The obtaining module 801 is configured to acquire data that needs to be carried by a bit sequence corresponding to a packet length of the radio frame;

a determining module 802, configured to determine, according to the acquired data, a bit sequence corresponding to a packet length of the radio frame, so that the data field in the bit sequence corresponding to the packet length of the radio frame carries the data, where the radio frame The bit sequence corresponding to the packet length includes a sequence number field and a data field, and the number of bits in the sequence number field is at least greater than 3;

The generating module 803 is configured to generate the radio frame according to a packet length of the radio frame;

The sending module 804 is configured to send the radio frame.

The data that needs to be carried by the bit sequence corresponding to the packet length of the radio frame includes: account information for performing wireless network access, or an access password of the wireless network.

Preferably, the determining module 802 is specifically configured to: convert the acquired data into an ASCII character pair. The value of the data field in the bit sequence corresponding to the packet length of the radio frame is determined according to the value corresponding to the converted ASCII character, so that the data in the bit sequence corresponding to the packet length of the radio frame is determined. The domain carries the data.

Further, the determining module 802 is further configured to: determine, according to the sequence number of the radio frame in the belonging packet, a value of a bit field in a bit sequence corresponding to a packet length of the radio frame, where the bit number in the sequence number field The value of the bit is in the first value range, the first value range does not overlap with the second value range, or the first value range does not include the first value, where the radio frame If the value of the bit of the sequence number field in the bit sequence corresponding to the packet length is within the second value range or is the first value, the data field in the bit sequence corresponding to the packet length of the radio frame The bits are used to carry the packet number.

Further, the sending module 804 may be further configured to: send a radio frame before or after transmitting the radio frame: a value of a bit of a data field in a bit sequence corresponding to a packet length of the radio frame is at a fourth value In the range, the fourth value range is a value range of the packet sequence number, the fourth value range does not overlap with the third value range, and the third value range is a packet length of the radio frame to be used. The range of values corresponding to the data carried by the corresponding bit sequence.

In summary, since the data domain of the bit sequence corresponding to the packet length of the radio frame carries data to be transmitted to the access side, the receiver can acquire the required data according to the bit sequence corresponding to the packet length of the radio frame. Especially in the scenario of accessing the wireless local area network, the sender can send the account information of the wireless local area network to the receiver according to the bit sequence corresponding to the packet length of the wireless frame, so that the receiver obtains the account information of the wireless local area network, thereby enabling wireless access. local area network. In addition, since the bit number of the sequence number field in the bit sequence corresponding to the packet length of the radio frame is greater than 3, since the sequence number field in the bit sequence corresponding to the packet length can be used to identify the sequence number of the radio frame in the group, the length is passed. The sequence number field is such that each packet contains a larger number of radio frames, that is, a radio frame as a packet interval can be transmitted every time a larger number of radio frames are separated, and the number of radio frames as a packet interval is smaller. The more it is possible to reduce the reception efficiency of the receiver due to the loss of the radio frame as the packet interval.

The present application is made with reference to a method, a device (system), and a computer program according to an embodiment of the present application. The flow chart and/or block diagram of the product is described. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

While the preferred embodiment of the present application has been described, it will be apparent that those skilled in the art can make further changes and modifications to the embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and

It will be apparent to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit and scope of the application. Thus, it is intended that the present invention cover the modifications and variations of the present invention.

Claims

A data transmission method, comprising:

Receiving a radio frame;

Determining a packet length of the radio frame, where a bit sequence corresponding to a packet length of the radio frame includes a sequence number field and a data field, where the number of bits in the sequence number field is at least greater than 3;

Determining, according to the value of the sequence number field and/or the bit field of the data field in the bit sequence corresponding to the packet length of the radio frame, whether the bit sequence corresponding to the packet length of the radio frame is used to carry data;

If the determination is yes, the data carried by the bit sequence corresponding to the packet length of the radio frame is determined according to the value of the bit of the data field in the bit sequence corresponding to the packet length of the radio frame.
The method according to claim 1, wherein said sequence number field is located in a high bit portion of a bit sequence corresponding to a packet length, and said data field is located in a low bit portion of a bit sequence corresponding to a packet length.
The method according to claim 1 or 2, wherein the radio frame is a radio frame defined by the 802.11 protocol, the number of bits in the sequence number field is 4, and the number of bits in the data field is 7.
The method according to any one of claims 1 to 3, wherein the determining the radio frame according to the value of a bit of a data field in a bit sequence corresponding to a packet length of the radio frame The data carried by the bit sequence corresponding to the packet length includes:

Determining an ASCII character according to a value of a bit of a data field in a bit sequence corresponding to a packet length of the radio frame;

The determined ASCII character is determined as data carried by the bit sequence corresponding to the packet length of the radio frame.
The method according to claim 1, wherein the determining whether the bit sequence corresponding to the packet length of the radio frame is based on a value of a bit of a sequence number field in a bit sequence corresponding to a packet length of the radio frame Used to carry data, including:

If the value of the bit field of the bit sequence corresponding to the packet length of the radio frame is within the first value range, determining that the bit sequence corresponding to the packet length of the radio frame is used to carry data, where The value of the bit field of the sequence number field in the bit sequence corresponding to the packet length of the radio frame is used to identify the sequence number of the radio frame within the belonging packet.
The method of claim 5, further comprising:

Determining, if the value of the bit of the sequence number field in the bit sequence corresponding to the packet length of the radio frame is within the second value range or the first value, determining a bit sequence corresponding to the packet length of the radio frame is used. And carrying the packet number, where the second value range does not overlap with the first value range, and the first value is not in the first value range.
The method according to claim 1, wherein the determining whether the bit sequence corresponding to the packet length of the radio frame is based on a value of a bit of a data field in a bit sequence corresponding to a packet length of the radio frame Used to carry business data, including:

If the value of the bit of the data field in the bit sequence corresponding to the packet length of the radio frame is in the third value range, determining that the bit sequence corresponding to the packet length of the radio frame is used to carry data, where The value range of the three values is a range of values corresponding to the data carried by the bit sequence corresponding to the packet length of the radio frame.
The method of claim 7 further comprising:

If the value of the bit of the data field in the bit sequence corresponding to the packet length of the radio frame is in the fourth value range, determining that the bit sequence corresponding to the packet length of the radio frame is used to carry the packet number, The fourth value range is a value range of the packet sequence number, and the third value range does not overlap with the fourth value range.
The method according to any one of claims 1 to 8, wherein the data carried by the bit sequence corresponding to the packet length of the radio frame comprises: account information for performing wireless network access, or a wireless network Access password.
A data transmission method, comprising:

Obtaining data that needs to be carried by a bit sequence corresponding to a packet length of the radio frame;

Determining, according to the acquired data, a bit sequence corresponding to a packet length of the radio frame, and causing the data field in the bit sequence corresponding to the packet length of the radio frame to carry the data, where the packet length of the radio frame corresponds to The bit sequence includes a sequence number field and a data field, and the number of bits in the sequence number field is at least greater than 3;

Generating the radio frame according to a packet length of the radio frame;

Sending the radio frame.
The method according to claim 10, wherein said sequence number field is located in a high bit portion of a bit sequence corresponding to a packet length, and said data field is located in a low bit portion of a bit sequence corresponding to a packet length.
The method according to claim 10 or 11, wherein the radio frame is a radio frame defined by the 802.11 protocol, the number of bits in the sequence number field is 4, and the number of bits in the data field is 7.
The method according to any one of claims 10 to 12, wherein the determining, according to the acquired data, a bit sequence corresponding to a packet length of a radio frame, and a bit sequence corresponding to a packet length of the radio frame The data domain in the middle carries the data, including:

Convert the obtained data into the value corresponding to the ASCII character;

And determining, according to the value corresponding to the converted ASCII character, the value of the data field in the bit sequence corresponding to the packet length of the radio frame, so that the data field in the bit sequence corresponding to the packet length of the radio frame carries the data .
The method according to claim 10, wherein the determining the bit sequence corresponding to the packet length of the radio frame according to the acquired data further includes:

Determining, according to the sequence number of the radio frame in the group, the value of the bit field in the bit sequence corresponding to the packet length of the radio frame, where the value of the bit field in the sequence number field is in the first value range The first value range does not overlap with the second value range, or the first value range does not include the first value, where the sequence number in the bit sequence corresponding to the packet length of the radio frame If the value of the bit of the field is within the second value range or is the first value, the bit of the data field in the bit sequence corresponding to the packet length of the radio frame is used to carry the packet number.
The method of claim 10, further comprising transmitting the following radio frame before or after transmitting the radio frame:

The value of the bit of the data field in the bit sequence corresponding to the packet length of the radio frame is in the fourth value. In the range, the fourth value range is a value range of the packet sequence number, the fourth value range does not overlap with the third value range, and the third value range is a packet length of the radio frame to be used. The range of values corresponding to the data carried by the corresponding bit sequence.
The method according to any one of claims 10 to 15, wherein the data to be carried by the bit sequence corresponding to the packet length of the radio frame comprises: account information for performing wireless network access, or wireless Network access password.
A data transmission device, comprising:

a receiving module, configured to receive a wireless frame;

a first determining module, configured to determine a packet length of the radio frame, where a bit sequence corresponding to a packet length of the radio frame includes a sequence number field and a data field, where the number of bits in the sequence number field is at least greater than 3;

a second determining module, configured to determine, according to a value of a sequence number field and/or a bit field of a data field in a bit sequence corresponding to a packet length of the radio frame, whether a bit sequence corresponding to a packet length of the radio frame is used Carrying data;

a third determining module, configured to determine, according to a value of a bit of a data field in a bit sequence corresponding to a packet length of the radio frame, in a case that the second determining module determines to be YES The data carried by the bit sequence corresponding to the packet length.
The apparatus according to claim 17, wherein said sequence number field is located in a high bit portion of a bit sequence corresponding to a packet length, and said data field is located in a low bit portion of a bit sequence corresponding to a packet length.
The device according to claim 17 or 18, wherein the radio frame is a radio frame defined by the 802.11 protocol, the number of bits in the sequence number field is 4, and the number of bits in the data field is 7.
The apparatus according to any one of claims 17 to 19, wherein the third determining module is specifically configured to:

Determining an ASCII character according to a value of a bit of a data field in a bit sequence corresponding to a packet length of the radio frame;

Determining the determined ASCII character as being carried by the bit sequence corresponding to the packet length of the radio frame The data.
The device according to claim 17, wherein the second determining module is specifically configured to:

If the value of the bit field of the bit sequence corresponding to the packet length of the radio frame is within the first value range, determining that the bit sequence corresponding to the packet length of the radio frame is used to carry data, where The value of the bit field of the sequence number field in the bit sequence corresponding to the packet length of the radio frame is used to identify the sequence number of the radio frame within the belonging packet.
The device of claim 21, wherein the second determining module is further configured to:

Determining, if the value of the bit of the sequence number field in the bit sequence corresponding to the packet length of the radio frame is within the second value range or the first value, determining a bit sequence corresponding to the packet length of the radio frame is used. And carrying the packet number, where the second value range does not overlap with the first value range, and the first value is not in the first value range.
The device according to claim 17, wherein the second determining module is specifically configured to:

If the value of the bit of the data field in the bit sequence corresponding to the packet length of the radio frame is in the third value range, determining that the bit sequence corresponding to the packet length of the radio frame is used to carry data, where The value range of the three values is a range of values corresponding to the data carried by the bit sequence corresponding to the packet length of the radio frame.
The device of claim 23, wherein the second determining module is further configured to:

If the value of the bit of the data field in the bit sequence corresponding to the packet length of the radio frame is in the fourth value range, determining that the bit sequence corresponding to the packet length of the radio frame is used to carry the packet number, The fourth value range is a value range of the packet sequence number, and the third value range does not overlap with the fourth value range.
The device according to any one of claims 17 to 24, wherein the data carried by the bit sequence corresponding to the packet length of the radio frame comprises: account information for performing wireless network access, or a wireless network Access password.
A data transmission device, comprising:

An acquiring module, configured to acquire data that needs to be carried by a bit sequence corresponding to a packet length of a radio frame;

a determining module, configured to determine, according to the acquired data, a bit sequence corresponding to a packet length of the radio frame, so that the data field in the bit sequence corresponding to the packet length of the radio frame carries the data, where the radio frame The bit sequence corresponding to the packet length includes a sequence number field and a data field, and the number of bits in the sequence number field is at least greater than 3;

a generating module, configured to generate the radio frame according to a packet length of the radio frame;

And a sending module, configured to send the wireless frame.
The apparatus according to claim 26, wherein said sequence number field is located in a high bit portion of a bit sequence corresponding to a packet length, and said data field is located in a low bit portion of a bit sequence corresponding to a packet length.
The apparatus according to claim 26 or 27, wherein the radio frame is a radio frame defined by the 802.11 protocol, the number of bits in the sequence number field is 4, and the number of bits in the data field is 7.
The apparatus according to any one of claims 26 to 28, wherein the determining module is specifically configured to:

Convert the obtained data into the value corresponding to the ASCII character;

And determining, according to the value corresponding to the converted ASCII character, the value of the data field in the bit sequence corresponding to the packet length of the radio frame, so that the data field in the bit sequence corresponding to the packet length of the radio frame carries the data .
The device of claim 26, wherein the determining module is further configured to:

Determining, according to the sequence number of the radio frame in the group, the value of the bit field in the bit sequence corresponding to the packet length of the radio frame, where the value of the bit field in the sequence number field is in the first value range The first value range does not overlap with the second value range, or the first value range does not include the first value, where the sequence number in the bit sequence corresponding to the packet length of the radio frame If the value of the bit of the field is within the second value range or is the first value, the bit of the data field in the bit sequence corresponding to the packet length of the radio frame is used to carry the packet number.
The device of claim 26, wherein the sending module is further configured to:

Transmitting a radio frame before or after transmitting the radio frame: a value of a bit of a data field in a bit sequence corresponding to a packet length of the radio frame is in a fourth value range, and the fourth value range is The value range of the packet sequence number, the fourth value range does not overlap with the third value range, and the third value range is the data corresponding to the data sequence carried by the bit sequence corresponding to the packet length of the radio frame. Range of values.
The apparatus according to any one of claims 26 to 31, wherein the data to be carried by the bit sequence corresponding to the packet length of the radio frame comprises: account information for performing wireless network access, or wireless Network access password.