WO2014026594A1

WO2014026594A1 - Data transmission method and device

Info

Publication number: WO2014026594A1
Application number: PCT/CN2013/081393
Authority: WO
Inventors: 张毅乐; 姜金辉; 闫建; 李黎; 杜迎军
Original assignee: 中兴通讯股份有限公司
Priority date: 2012-08-14
Filing date: 2013-08-13
Publication date: 2014-02-20
Also published as: CN102857967B; CN102857967A

Abstract

Disclosed are a data transmission method and device. The method comprises: establishing virtual devices corresponding to functions of a wireless communication module; obtaining a virtual device corresponding to a function combination input by a user, and establishing a data connection between the obtained virtual device and a physical UART; transmitting data by using the data connection. In the present invention, for a UART-based wireless communication module, virtual devices respectively corresponding to functions of the wireless communication module are established, so that multiple functions of the wireless communication module can undergo concurrent processing; further, a dynamic connection from a virtual device corresponding to a function combination required to be used by a user to a physical UART is established, so as to realize dynamic switching of function combinations of the wireless communication module, thereby achieving suitability in different application scenarios.

Description

Data transmission method and device

TECHNICAL FIELD The present invention relates to the field of communications, and in particular to a data transmission method and apparatus. BACKGROUND OF THE INVENTION A wireless communication module is a common wireless terminal product widely used in products including wireless communication functions such as industrial control, smart home, car, tablet, and the like. Due to its wide range of applications and complex application scenarios, it is necessary to find a universal interface form that enables wireless communication modules to communicate with various operating systems and even single-chip microcomputers. Universal Asynchronous Receiver/Transmitter (UART) is a universal serial data bus for asynchronous communication. Its interface is simple and easy to operate. It is widely used in various systems and microcontrollers. Therefore, supporting the UART interface is very important for the wireless communication module. The wireless communication module provides users with various functions, such as: AT control, data, diagnosis, Global Position Service (GPS), etc., which requires paralleling multiple functions on a single UART interface. At the same time, due to the diversity of usage scenarios, multiple combinations of functions need to be dynamically switched to adapt to different scenarios and needs. For example, in some application scenarios, the host system only contains the UART interface, which requires mounting the functional units that may be used to a single physical UART port. However, in other application scenarios, the host has a UART and a universal string. Two serial ports (Universal Serial Bus, USB for short), this time may need to mount the function with high speed requirements to the USB, which involves dynamic switching of the function combination. However, the traditional UART multiplexing technology cannot dynamically adjust the function combination unit, and only has one function combination. The function combination cannot be changed as needed, and cannot simultaneously satisfy multiple application scenarios and requirements. 1 is a schematic structural diagram of a wireless communication module and a host based on a UART interface according to the related art. As shown in FIG. 1, a wireless communication module (referred to as a module in FIG. 1) includes a multiplexing (MUX) layer. And the wireless communication function unit (simplified in Figure 1 is function 1, function 2, function 3). The output data of the wireless communication function unit is directly transmitted to the MUX layer, and is encoded and sent to the user side (ie, the host side), and the user side MUX layer decodes the data to obtain the actual data corresponding to each wireless communication function unit. After the data sent by the user side arrives at the wireless communication module, it is first parsed by the MUX layer and then distributed to each wireless communication function unit. In the schematic diagram shown in FIG. 1, each wireless communication function unit and the MUX layer are closely combined, and the function combination is determined when the module is powered on, and the function combination cannot be dynamically changed. SUMMARY OF THE INVENTION The embodiments of the present invention provide a data transmission method and apparatus, so as to at least solve the related art, the traditional UART multiplexing technology cannot dynamically adjust the function combination, resulting in failure to meet various application scenarios and requirements. According to an aspect of the embodiments of the present invention, a data transmission method is provided, including: establishing a virtual device corresponding to each function of a wireless communication module; acquiring a virtual device corresponding to a function combination input by the user, and acquiring the virtual device A data connection is established between the device and the physical UART; data is transmitted using the above data connection. Preferably, obtaining the virtual device corresponding to the function combination input by the user comprises: receiving a command from the user; parsing the command, acquiring a function combination to be used by the user; and acquiring the virtual device corresponding thereto according to the function combination. Preferably, before acquiring the virtual device corresponding to the functional combination input by the user, the method further includes: mounting the AT service to the physical UART, wherein the AT service is used to parse the AT command from the user. Preferably, establishing a data connection between the acquired virtual device and the physical UART comprises: mounting the acquired virtual device to the physical UART through a multiplexing layer. Preferably, establishing a virtual device corresponding to each function of the wireless communication module comprises: establishing a virtual device corresponding to each function; respectively associating each functional unit with a corresponding virtual device. Preferably, transmitting data by using the data connection comprises: receiving input data of the user, and parsing the input data; determining the target virtual device of the input data and the target functional unit according to the parsing result; and transmitting the input data to the target functional unit by using the data connection. Preferably, transmitting the data by using the data connection comprises: encapsulating data that needs to be sent to the user, wherein the encapsulated data carries information indicating the virtual device to which the data belongs; and the data is sent to the user by using the data connection. According to another aspect of the present invention, a data transmission apparatus is provided, which is applied to a wireless communication module, including: a first establishing module, configured to establish a virtual device corresponding to each function of the wireless communication module; acquiring a module, setting To obtain a virtual device corresponding to the function combination input by the user; a second establishing module, configured to establish a data connection between the acquired virtual device and the physical universal asynchronous receiving/transmitting UART; and a data transmission module configured to transmit by using the data connection data. Preferably, the obtaining module comprises: a receiving unit configured to receive a command from the user; a parsing unit configured to parse the command; a first obtaining unit configured to acquire a function combination to be used by the user; and a second obtaining unit configured to perform the function according to the function Get the virtual device corresponding to it in combination. Preferably, the second establishing module comprises: a mounting unit configured to mount the acquired virtual device to the physical UART through the multiplexing layer. According to the embodiment of the present invention, a virtual device corresponding to each function of the wireless communication module is established for the UART-based wireless communication module, so that the functions of the plurality of wireless communication modules can be concurrently processed, and the virtual combination corresponding to the function combination required by the user is established. The dynamic connection of the device to the physical UART realizes dynamic switching of the function combination of the wireless communication module, thereby adapting to different application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,, . 1 is a schematic structural diagram of a UART interface-based wireless communication module and a host according to the related art; FIG. 2 is a flowchart of a data transmission method according to an embodiment of the present invention; FIG. 3 is a flowchart according to an embodiment of the present invention. Figure 4 is a block diagram showing the structure of a data transmission device in accordance with a preferred embodiment of the present invention; Figure 5 is a block diagram showing the structure of a data transmission system in accordance with a preferred embodiment of the present invention; Flowchart of Wireless Communication Module Initialization; Figure 7 is a flow diagram of functional combination dynamic switching in accordance with a preferred embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. The embodiment of the present invention provides a data transmission method. FIG. 2 is a flowchart of a data transmission method according to an embodiment of the present invention. As shown in FIG. 2, the following steps S202 to S206 are included. Step S202, establishing a virtual device corresponding to each function of the wireless communication module. Step S204: Acquire a virtual device corresponding to the function combination input by the user, and establish a data connection between the acquired virtual device and the physical UART. Step S206, transmitting data by using the data connection. In the related art, the traditional UART multiplexing technology cannot dynamically adjust the function combination, which may not satisfy various application scenarios and requirements. In the embodiment of the present invention, for the UART-based wireless communication module, by establishing a virtual device corresponding to each function of the wireless communication module, the functions of the plurality of wireless communication modules can be concurrently processed, and the function combination required by the user is established. The dynamic connection of the virtual device to the physical UART realizes dynamic switching of the function combination of the wireless communication module, thereby adapting to different application scenarios. In step S204, obtaining a virtual device corresponding to the function combination input by the user may be implemented by parsing a command from the user, including: receiving a command from the user; parsing the command, acquiring a function combination to be used by the user; acquiring according to the function combination The corresponding virtual device. In the preferred embodiment, the corresponding virtual device is determined according to the user's needs (the combination of functions to be used), so that dynamic switching of the function combination according to the user requirement or the application scenario can be implemented. Preferably, before acquiring the virtual device corresponding to the functional combination input by the user, the method further includes: mounting the AT service to the physical UART, wherein the AT service is used to parse the AT command from the user. A data connection is established between the obtained virtual device and the physical UART, and the obtained virtual device corresponding to the function combination to be used by the user can be mounted on the physical UART through the multiplexing layer. Preferably, establishing a virtual device corresponding to each function of the wireless communication module comprises: establishing a virtual device corresponding to each function; respectively associating each functional unit with a corresponding virtual device. The use of data connections to transmit data includes two aspects: receiving data from the user side and transmitting data to the user side. The following are introduced separately.

(1) receiving data from the user side by using the data connection, comprising the steps of: receiving the input data of the user, and parsing the input data; determining the target virtual device of the input data and the target functional unit according to the analysis result; inputting the data by using the data connection Send to the target functional unit. In the preferred embodiment, after the target virtual device and the corresponding target functional unit are determined according to the input data, the input data is sent to the target virtual device by using a data connection, and then the input virtual data is sent by the target virtual device to its corresponding The target functional unit, thus completing the reception of data. In practical applications, the MUX layer of the wireless communication module parses the user's input to determine which functional unit the data should be processed by.

(2) transmitting data to the user side by using the data connection, including the following steps: encapsulating data that needs to be sent to the user, where the encapsulated data carries information indicating the virtual device to which the data belongs; The data is sent to the user. In practical applications, each packet of data is encapsulated by the MUX layer of the wireless communication module, and the data packet includes a header, a trailer, and a check digit. After receiving the data, the user determines which virtual device the data belongs to by parsing the packet header. The embodiment of the invention further provides a data transmission device, which is applied to a wireless communication module, and the data transmission device can be used to implement the above data transmission method. FIG. 3 is a structural block diagram of a data transmission apparatus according to an embodiment of the present invention. As shown in FIG. 3, the apparatus includes: a first setup module 302, an acquisition module 304, a second setup module 306, and a data transmission module 308. The structure is described in detail below. The first establishing module 302 is configured to establish a virtual device corresponding to each function of the wireless communication module; the obtaining module 304 is connected to the first establishing module 302, and configured to acquire a virtual device corresponding to the functional combination input by the user; The establishing module 306 is connected to the obtaining module 304, and is configured to establish a data connection between the virtual device acquired by the obtaining module 304 and the physical UART. The data transmitting module 308 is connected to the second establishing module 306 for utilizing the second establishing module 306. The established data connection transmits data. In the related art, the traditional UART multiplexing technology cannot dynamically adjust the function combination, which may not satisfy various application scenarios and requirements. In the embodiment of the present invention, for the UART-based wireless communication module, by establishing a virtual device corresponding to each function of the wireless communication module, the functions of the plurality of wireless communication modules can be concurrently processed, and the function combination required by the user is established. The dynamic connection of the virtual device to the physical UART realizes dynamic switching of the function combination of the wireless communication module, thereby adapting to different application scenarios. As shown in FIG. 4, the obtaining module 304 includes: a receiving unit 3042, configured to receive a command from a user; a parsing unit 3044, connected to the receiving unit 3042, configured to parse the command received by the receiving unit 3042; and a first obtaining unit 3046, connecting To the parsing unit 3044, it is set to acquire the function combination to be used by the user; the second obtaining unit 3048 is connected to the first obtaining unit 3046, and is configured to acquire the virtual device corresponding thereto according to the function combination acquired by the first obtaining unit 3046. Preferably, the apparatus further includes: a mounting module, connected to the first establishing module 302, configured to mount the AT service to the physical UART, wherein the AT service is configured to parse the AT command from the user. Preferably, the second establishing module 306 comprises: a mounting unit configured to mount the acquired virtual device to the physical UART through a multiplexing layer. Preferably, the first establishing module 302 includes: an establishing unit, configured to establish a virtual device corresponding to each function; and an associating unit, connected to the establishing unit, configured to respectively associate each functional unit with a corresponding virtual device. Preferably, the data transmission module 308 includes: a receiving unit configured to receive input data of the user; a parsing unit connected to the receiving unit, configured to parse the input data received by the receiving unit; and a determining unit connected to the parsing unit, configured to be configured according to The parsing result of the parsing unit determines the target virtual device of the input data and the target functional unit; the first transmitting unit is connected to the determining unit, and is configured to transmit the input data to the target functional unit determined by the determining unit by using the data connection. Preferably, the data transmission module 308 includes: a packaging unit configured to encapsulate data to be sent to the user, where the encapsulated data carries information indicating the virtual device to which the data belongs; the second sending unit is connected to the package The unit is configured to send the data encapsulated by the encapsulating unit to the user by using a data connection. It should be noted that the data transmission device described in the device embodiment corresponds to the foregoing method embodiment, and the specific implementation process can be understood in conjunction with the detailed description in the method embodiment. In order to make the technical solutions and implementation methods of the embodiments of the present invention clearer, the implementation process will be described in detail below in conjunction with the preferred embodiments. In a preferred embodiment, the data transmission device is applied to a wireless communication module based on a UART interface, and may also be implemented by the following units: a MUX layer multiplexing unit, a virtual device unit, a wireless communication module function unit, and a wireless communication module. Function mount unit. The MUX layer multiplexing unit (implementing the function of the data transmission module 308 described above) is configured to parse the data acquired from the physical UART interface and send it to different virtual devices; and is also configured to receive from each virtual device. The incoming data is encoded and sent to the physical UART interface. The virtual device unit (implementing the functions of the first establishing module 302 described above) is configured to establish a plurality of virtual devices and associate the plurality of virtual devices with the plurality of wireless functions. The wireless communication module functional unit is set to provide various wireless module functions. The wireless communication module function mounting unit (implementing the functions of the above obtaining module 304 and the second establishing module 306) is configured to parse the functional combination input by the user and select the virtual device to be used to be mounted on the physical UART interface. In a preferred embodiment, the data transmission method, that is, the combination of multiple wireless module function concurrent communication and dynamic switching function on the UART port, is as follows: Step 1. When the wireless communication module starts, the AT service is mounted to the physical UART by default. On the interface. Step 2: Establish corresponding multiple virtual devices according to the functions of the wireless communication module. Step 3: Associate the functional unit of the wireless communication module with the established virtual device. Step 4. The user inputs the function combination to be used through the AT command. Step 5: Parse the AT command, dynamically select the virtual device to be used according to the function combination input by the user, and mount the virtual device to the physical UART through the multiplexing layer. Step 6. When transmitting data, the MUX layer encapsulates each packet of data, and the data packet includes a packet header, a packet header, and a check digit. The user determines which virtual device the data belongs to by parsing the data packet header; when receiving the data, the MUX layer determines which functional unit the data should be sent to by processing the user's input. It can be seen that the method of establishing multiple virtual devices based on the physical UART interface solves the problem of concurrent processing of multiple wireless communication modules, and realizes the functional combination of the wireless communication modules through the dynamic mounting of the virtual device to the physical UART. Dynamic switching. 5 is a schematic structural diagram of a data transmission system according to a preferred embodiment of the present invention. As shown in FIG. 5, the system includes a host and a wireless communication module, wherein the wireless communication module includes a MUX layer, a virtual device unit, and a wireless communication module functional unit. And function mount unit. In Fig. 5, the wireless communication module functional unit is represented by function 1, function 2, and the like.

The MUX layer is set to encode and parse data sent or received by the module; the virtual device unit is set to virtualize multiple devices; the wireless communication module functional unit is configured to implement various module functions; and the function mounting unit is configured to mount the virtual device to Physical UART. The MUX layer communicates with the physical UART interface. When the module is powered on, several virtual devices are created according to the supported functions, and the virtual device is associated with the functional unit. When the functional unit combination input by the user is received, the virtual device is established. The data connection between the MUX layers enables dynamic switching of functional combinations. FIG. 6 is a flowchart of initializing a wireless communication module according to a preferred embodiment of the present invention. As shown in FIG. 6, the method includes the following steps:

S602, the module is powered on.

S604. Create a plurality of virtual devices corresponding to the functions according to the functions of the module. S606, the function of the initialization module.

S608, mount the AT service to the physical UART. S610, the module initialization is completed. FIG. 7 is a flow chart of functional combination dynamic switching according to a preferred embodiment of the present invention. As shown in FIG. 7, the method includes the following steps: S702: A user inputs an required function combination through an AT command.

S704, the module parses the functional combination input by the user.

S706: The mounting function is combined to the corresponding virtual device.

S708, mounting the used virtual device to the multiplex (MUX) layer.

S710, the MUX layer starts to receive or distribute data. S712, the function combination dynamic switching is completed. In the embodiment of the present invention, the function of the 3G module is associated with the virtual device in the existing multiplexing technology, and the function mounting unit is added, and the required virtual device can be mounted on the MUX layer according to the input of the user. The dynamic mounting of the functional combination is realized, which solves the problem that the traditional technology cannot dynamically change the functional combination. For example: The initial function combination is DATA+AT. If you want to use the GPS function, you can dynamically switch the function combination to

It should be noted that the foregoing embodiment may be implemented by hardware related to program instructions, and the program may be stored in a readable storage medium, and the program executes the steps corresponding to the foregoing method when executed. The storage medium may be a read only memory (ROM), a random access memory (RAM), a magnetic disk, a compact disk, or the like. It should be noted that the steps shown in the flowchart of the accompanying drawings may be performed in a computer system such as a set of computer executable instructions, and, although the logical order is shown in the flowchart, in some cases, The steps shown or described may be performed in an order different than that herein. In summary, according to the above embodiment of the present invention, a data transmission method and apparatus are provided. Through the embodiment of the present invention, a virtual device corresponding to each function of the wireless communication module is established, so that multiple wireless communication module functions can be concurrently processed, that is, multiplexing of multiple wireless module functions is implemented on a single UART interface, and The dynamic combination of the virtual device to the physical UART corresponding to the function combination required by the user realizes dynamic switching of the function combination of the wireless communication module, thereby adapting to different application scenarios. Obviously, those skilled in the art should understand that the above modules or steps of the embodiments of the present invention can be implemented by a general computing device, which can be concentrated on a single computing device or distributed in multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or Multiple of these modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

1. A method of data transmission, comprising:

Establishing a virtual device corresponding to each function of the wireless communication module;

Obtaining a virtual device corresponding to a combination of functions input by the user, and establishing a data connection between the acquired virtual device and the physical universal asynchronous receiving/transmitting UART;

Data is transmitted using the data connection.

2. The method of claim 1, wherein obtaining a virtual device corresponding to a functional combination input by a user comprises - receiving a command from the user;

Parsing the command to obtain a combination of functions to be used by the user;

The virtual device corresponding thereto is obtained according to the function combination.

The method according to claim 2, wherein, before acquiring the virtual device corresponding to the functional combination input by the user, the method further includes:

An AT service is mounted to the physical UART, wherein the AT service is set to parse an AT command from the user.

4. The method of claim 1, wherein establishing a data connection between the acquired virtual device and the physical UART comprises:

The acquired virtual device is mounted to the physical UART through a multiplexing layer.

5. The method according to claim 1, wherein the establishing a virtual device corresponding to each function of the wireless communication module comprises:

Establishing a virtual device corresponding to each of the functions described;

Each functional unit is associated with its corresponding virtual device.

The method according to any one of claims 1 to 5, wherein transmitting data by using the data connection comprises:

Receiving input data of the user, and parsing the input data;

Determining, by the parsing result, the target virtual device of the input data and the target functional unit; The input data is sent to the target functional unit using the data connection.

Encapsulating data that needs to be sent to the user, where the encapsulated data carries information that is set to indicate the virtual device to which the data belongs;

The data is sent to the user using the data connection.

8. A data transmission device for use in a wireless communication module, comprising:

a first establishing module, configured to establish a virtual device corresponding to each function of the wireless communication module; an acquiring module, configured to acquire a virtual device corresponding to a function combination input by the user; and a second establishing module, configured to acquire the virtual device Establish a data connection with the physical universal asynchronous receive/transmit UART;

A data transmission module is arranged to transmit data using the data connection.

The device according to claim 8, wherein the obtaining module comprises:

a receiving unit, configured to receive a command from the user;

a parsing unit, configured to parse the command;

a first obtaining unit, configured to acquire a function combination to be used by the user;

The second obtaining unit is configured to acquire a virtual device corresponding thereto according to the function combination.

The device according to claim 8, wherein the second establishing module comprises:

A mount unit is configured to mount the fetched virtual device onto the physical UART through a multiplex layer.