CN108092986B - Data transmission method and device of mobile terminal - Google Patents
Data transmission method and device of mobile terminal Download PDFInfo
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- CN108092986B CN108092986B CN201711442272.7A CN201711442272A CN108092986B CN 108092986 B CN108092986 B CN 108092986B CN 201711442272 A CN201711442272 A CN 201711442272A CN 108092986 B CN108092986 B CN 108092986B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/24—Negotiation of communication capabilities
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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Abstract
The invention provides a data transmission method and a data transmission device of a mobile terminal. The method improves the anti-interference capability by reducing the frequency of the data transmission signal, thereby improving the stability of the data transmission between the mobile terminal and the target equipment through the OTG.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a data transmission method and apparatus for a mobile terminal.
Background
However, with The development of transmission devices, devices supporting an OTG (On-The-Go) function are beginning to appear, and The OTG is mainly applied to connection between various devices or mobile terminals for data transmission. For example, a mobile terminal such as a mobile phone and a tablet computer may be connected to a storage device such as a usb disk and a mobile hard disk, or an input/output device such as a mouse and a keyboard through an OTG data line, and may also be connected to another mobile terminal through an OTG data line, for example, two mobile phones are interconnected to perform data transmission.
When two mobile terminals are connected through an OTG, the data transmission between the two mobile terminals is very unstable because the mobile terminals have strong electrical characteristic interference and electromagnetic wave interference and have large impedance, and a situation that the master device cannot identify the slave device or the transmission is interrupted often occurs.
Disclosure of Invention
The invention provides a data transmission method and device of a mobile terminal, which aim to improve the stability of data transmission between the mobile terminal and target equipment through an OTG (on-the-go) and improve the anti-interference capability.
One aspect of the present invention is to provide a data transmission method for a mobile terminal, where the method specifically includes:
the mobile terminal determines the device type of the target device connected through the OTG;
and if the equipment type of the target equipment is determined to be the mobile terminal, reducing the frequency of the data transmission signal between the mobile terminal and the target equipment.
Further, the reducing, by the mobile terminal, the frequency of the data transmission signal with the target device specifically includes:
the mobile terminal sends a request message to the target equipment, wherein the request message carries a signal frequency reduction instruction;
and the mobile terminal receives the request response sent by the target equipment.
Further, the reduced signal frequency indication is used for indicating that the transmission protocol is changed from USB2.0 to USB 1.1.
Further, the determining, by the mobile terminal, the device type of the target device connected through the OTG specifically includes:
the mobile terminal receives a connection message of the target device through an OTG, wherein the connection message carries a device identifier, and the connection message is a connection request message or a connection response message;
and the mobile terminal determines the equipment type of the target equipment according to the equipment identification.
Further, the method further comprises:
and if the equipment type of the target equipment is determined to be a non-mobile terminal, the mobile terminal performs data transmission with the target equipment by adopting a preset transmission signal frequency of a transmission protocol.
Another aspect of the present invention is to provide a data transmission apparatus of a mobile terminal, the apparatus comprising:
the identification module is used for determining the device type of the target device connected through the OTG;
and the data transmission module is used for reducing the frequency of the data transmission signal between the target equipment and the target equipment if the equipment type of the target equipment is determined to be the mobile terminal.
Further, the data transmission module is specifically configured to:
sending a request message to the target device, wherein the request message carries a signal frequency reduction indication;
and receiving a request response sent by the target equipment.
Further, the reduced signal frequency indication is used for indicating that the transmission protocol is changed from USB2.0 to USB 1.1.
Further, the identification module is specifically configured to:
receiving a connection message of the target device through the OTG, wherein the connection message carries a device identifier, and the connection message is a connection request message or a connection response message;
and determining the device type of the target device according to the device identification.
Further, the data transmission module is further configured to:
and if the equipment type of the target equipment is determined to be a non-mobile terminal, carrying out data transmission with the target equipment by adopting a preset transmission signal frequency of a transmission protocol.
According to the data transmission method and device of the mobile terminal, the mobile terminal determines the equipment type of the target equipment connected through the OTG, and if the equipment type of the target equipment is determined to be the mobile terminal, the mobile terminal reduces the frequency of data transmission signals between the mobile terminal and the target equipment. The method improves the anti-interference capability by reducing the frequency of the data transmission signal, thereby improving the stability of the data transmission between the mobile terminal and the target equipment through the OTG.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flowchart of a data transmission method of a mobile terminal according to an embodiment of the present invention;
fig. 2 is a flowchart of a data transmission method of a mobile terminal according to a second embodiment of the present invention;
fig. 3 is a structural diagram of a data transmission apparatus of a mobile terminal according to a third embodiment of the present invention;
fig. 4 is a block diagram of a mobile terminal according to a fourth embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Fig. 1 is a flowchart of a data transmission method of a mobile terminal according to an embodiment of the present invention. As shown in fig. 1, the present embodiment provides a data transmission method for a mobile terminal, which includes the following specific steps:
s101, the mobile terminal determines the device type of the target device connected through the OTG.
In this embodiment, the mobile terminal may be a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), a wearable device, or the like. The target device may be a mobile terminal, or may be a non-mobile terminal device, such as a storage device such as a usb disk and a mobile hard disk, or an input/output device such as a mouse and a keyboard. The target device is connected with the mobile terminal through an OTG data line, the mobile terminal serves as a master device, and the target device serves as a slave device.
In this embodiment, the mobile terminal may determine the device type of the target device connected to the OTG data line in a handshake manner. Specifically, when the mobile terminal is connected with the target device through the OTG data line, the mobile terminal sends a connection request to the target device, the target device returns a connection response message, and carries a device identifier in the connection response message, and the mobile terminal identifies the device type of the target device by identifying the device identifier; or when the mobile terminal is connected with the target equipment through the OTG data line, the target equipment sends a connection request message to the mobile terminal, the connection request message carries an equipment identifier, and the mobile terminal identifies the equipment identifier so as to determine the equipment type of the target equipment. Of course, the mobile terminal may also determine the device type of the target device in other manners, which is not described herein again.
S102, if the device type of the target device is determined to be a mobile terminal, the mobile terminal reduces the frequency of data transmission signals between the mobile terminal and the target device.
In this embodiment, considering that when the device type of the target device is a mobile terminal, that is, when two mobile terminals are connected through an OTG data line, because the impedance of the target device is relatively large, and meanwhile, the target device is also provided with a communication module, such as a WI-FI module and a bluetooth module, which causes problems of electrical characteristic interference, electromagnetic wave interference, and the like, so that data transmission between the two mobile terminals is unstable, in this embodiment, when it is determined that the device type of the target device is a mobile terminal, the mobile terminal reduces a data transmission signal frequency with the target device, so as to improve an anti-interference capability, and improve stability of data transmission between the mobile terminal and the target device.
Specifically, in this embodiment, a reduced transmission protocol may be adopted, that is, a USB (Universal Serial BUS) transmission protocol is changed from USB2.0 (i.e., "High-Speed USB" in the current USB2.0 standard) to USB1.1 (i.e., "Full-Speed USB" in the current USB2.0 standard), so that the data transmission Speed is reduced, and the data transmission signal frequency is reduced, so that the anti-interference capability is improved, and the stability of data transmission between the mobile terminal and the target device is improved. Of course, other methods for reducing the frequency of the data transmission signal may be adopted to improve the anti-interference capability, and will not be described herein again.
In the data transmission method of the mobile terminal provided in this embodiment, the mobile terminal determines the device type of the target device connected through the OTG, and if it is determined that the device type of the target device is the mobile terminal, the mobile terminal reduces the frequency of the data transmission signal with the target device. The method of the embodiment improves the anti-interference capability by reducing the data transmission signal frequency, thereby improving the stability of data transmission between the mobile terminal and the target device through the OTG.
Example two
Fig. 2 is a flowchart of a data transmission method of a mobile terminal according to a second embodiment of the present invention. As shown in fig. 2, on the basis of the foregoing embodiments, the present embodiment provides a data transmission method for a mobile terminal, which includes the following specific steps:
s201, the mobile terminal receives a connection message of the target device through the OTG, the connection message carries a device identifier, and the connection message is a connection request message or a connection response message.
In this embodiment, when the mobile terminal is connected to the target device through the OTG data line, the mobile terminal may send a connection request to the target device, the target device returns a connection response message after receiving the connection request, and carries a device identifier in the connection response message, and the mobile terminal determines the device type of the target device by recognizing the device identifier; or when the mobile terminal is connected with the target device through the OTG data line, the target device can also send a connection request message to the mobile terminal, the connection request message carries a device identifier, and the mobile terminal identifies the device identifier so as to determine the device type of the target device. It should be noted that, the mobile terminal and the target device are connected through an OTG data line, the mobile terminal serves as a master device, the target device serves as a slave device, and if the target device is a mobile terminal, the mobile terminal needs to be connected with the OTG data line through a USB data line.
S202, the mobile terminal determines the device type of the target device according to the device identification.
In this embodiment, the device type of the target device may be a mobile terminal, such as a mobile phone, a tablet computer, a PDA wearable device, and the like; the device type of the target device may be a non-mobile terminal, such as a storage device like a usb disk or a mobile hard disk, or an input/output device like a mouse or a keyboard.
Further, if it is determined that the device type of the target device is a mobile terminal, S203 is executed, and if it is determined that the device type of the target device is a non-mobile terminal, S205 is executed.
S203, the mobile terminal sends a request message to the target device, wherein the request message carries a signal frequency reduction instruction;
further, the reduced signal frequency indication is used for indicating that the transmission protocol is changed from USB2.0 to USB 1.1.
In the embodiment, the transmission protocol is reduced, that is, the USB transmission protocol is changed from USB2.0 to USB1.1, so that the data transmission speed is reduced, and the data transmission signal frequency is reduced, thereby improving the anti-interference capability and further improving the stability of data transmission between the mobile terminal and the target device. Because the current mobile terminal generally adopts the USB2.0 protocol and has the characteristic of downward compatibility, the transmission protocol at the mobile terminal side can be changed from the USB2.0 to the USB1.1, and the target equipment side can synchronously modify the transmission protocol or does not modify the transmission protocol; in addition, the transmission protocol on the mobile terminal side can be changed from USB2.0 to USB1.1 without modifying the transmission protocol on the target device side.
And S204, the mobile terminal receives the request response sent by the target equipment.
In this embodiment, after the mobile terminal receives the request response sent by the target device, the data connection is established, and the mobile terminal may transmit data to the target device or read data of the target device.
And S205, the mobile terminal performs data transmission with the target device by adopting a preset transmission signal frequency of a transmission protocol.
In this embodiment, when the mobile terminal determines that the device type of the target device is a non-mobile terminal, that is, the target device is a storage device such as a usb disk or a mobile hard disk, or an input/output device such as a mouse or a keyboard, since the impedance of the target device is smaller than that of the mobile terminal, and there is no electrical characteristic interference and electromagnetic wave interference or the electrical characteristic interference and the electromagnetic wave interference are weak, the data transmission is still performed by using the transmission signal frequency of the preset transmission protocol. For example, if the target device is a USB2.0 interface and the mobile terminal supports USB2.0, the target device performs data transmission in a USB2.0 protocol after being connected to the OTG data line; if the target device is a USB3.0 interface and the mobile terminal supports USB2.0, the transmission protocol of the target device is compatible to USB2.0 after the target device is connected to the OTG data line, and data transmission is performed according to the USB2.0 protocol.
In the data transmission method of the mobile terminal provided in this embodiment, the mobile terminal determines the device type of the target device connected through the OTG, and if it is determined that the device type of the target device is the mobile terminal, the mobile terminal reduces the frequency of the data transmission signal with the target device. The method of the embodiment improves the anti-interference capability by reducing the data transmission signal frequency, thereby improving the stability of data transmission between the mobile terminal and the target device through the OTG.
In addition, optionally, if it is determined that the device type of the target device is the mobile terminal, in order to avoid electrical characteristic interference and electromagnetic wave interference, all communication modules of the target device may be turned off, the target device is set to be in a usb disk mode, the target device is used as a storage device, and data transmission is performed by using a transmission signal frequency of a preset transmission protocol, so that stability of data transmission is improved.
EXAMPLE III
Fig. 3 is a structural diagram of a data transmission device of a mobile terminal according to a third embodiment of the present invention. The embodiment provides a data transmission device of a mobile terminal, which can execute the processing flow provided by the data transmission method of the mobile terminal. As shown in fig. 3, the data transmission apparatus of the mobile terminal provided in this embodiment specifically includes an identification module 301 and a data transmission module 302.
The identification module 301 is configured to determine a device type of a target device connected through an OTG;
the data transmission module 302 is configured to reduce a data transmission signal frequency with the target device if it is determined that the device type of the target device is the mobile terminal.
Further, the data transmission module 302 is specifically configured to:
sending a request message to the target device, wherein the request message carries a signal frequency reduction indication;
and receiving a request response sent by the target equipment.
Further, the reduced signal frequency indication is used for indicating that the transmission protocol is changed from USB2.0 to USB 1.1.
Further, the identification module 301 is specifically configured to:
receiving a connection message of the target device through the OTG, wherein the connection message carries a device identifier, and the connection message is a connection request message or a connection response message;
and determining the device type of the target device according to the device identification.
Further, the data transmission module 302 is further configured to:
and if the equipment type of the target equipment is determined to be a non-mobile terminal, carrying out data transmission with the target equipment by adopting a preset transmission signal frequency of a transmission protocol.
The sending device provided in the embodiment of the present invention may be specifically configured to execute the method embodiment provided in fig. 1, and specific functions are not described herein again.
In the data transmission apparatus of the mobile terminal provided in this embodiment, the mobile terminal determines the device type of the target device connected through the OTG, and if it is determined that the device type of the target device is the mobile terminal, the mobile terminal reduces the frequency of the data transmission signal with the target device. The device of the embodiment improves the anti-interference capability by reducing the frequency of the data transmission signal, thereby improving the stability of data transmission between the mobile terminal and the target device through the OTG.
Example four
Fig. 4 is a block diagram of a mobile terminal according to a fourth embodiment of the present invention, where the mobile terminal may be a mobile phone, a tablet computer, a personal digital assistant, a wearable device, or the like.
The mobile terminal 400 may include one or more of the following components: processing component 402, memory 404, power component 406, multimedia component 408, audio component 410, input/output (I/O) interface 412, sensor component 414, and communication component 416.
The processing component 402 generally controls overall operation of the mobile terminal 400, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 402 may include one or more processors 420 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 402 can include one or more modules that facilitate interaction between the processing component 402 and other components. For example, the processing component 402 can include a multimedia module to facilitate interaction between the multimedia component 408 and the processing component 402.
The memory 404 is configured to store various types of data to support operation at the mobile terminal 400. Examples of such data include instructions for any application or method operating on the mobile terminal 400, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 404 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The power components 406 provide power to the various components of the mobile terminal 400. The power components 406 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the mobile terminal 400.
The multimedia component 408 comprises a screen providing an output interface between the mobile terminal 400 and the user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 408 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the mobile terminal 400 is in an operation mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 410 is configured to output and/or input audio signals. For example, the audio component 410 may include a Microphone (MIC) configured to receive external audio signals when the mobile terminal 400 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 404 or transmitted via the communication component 416. In some embodiments, audio component 410 also includes a speaker for outputting audio signals.
The I/O interface 412 provides an interface between the processing component 402 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor component 414 includes one or more sensors for providing various aspects of state assessment for the mobile terminal 400. For example, the sensor assembly 414 may detect an open/closed state of the mobile terminal 400, relative positioning of components, such as a display and keypad of the mobile terminal 400, a change in position of the mobile terminal 400 or a component of the mobile terminal 400, the presence or absence of user contact with the mobile terminal 400, orientation or acceleration/deceleration of the mobile terminal 400, and a change in temperature of the mobile terminal 400. The sensor assembly 414 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 414 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 414 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 416 is configured to facilitate communications between the mobile terminal 400 and other devices in a wired or wireless manner. The mobile terminal 400 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 416 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 416 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the mobile terminal 400 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as the memory 404 comprising instructions, executable by the processor 420 of the mobile terminal 400 to perform the methods provided by the first and second embodiments are also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
A non-transitory computer-readable storage medium, in which instructions, when executed by a processor of a terminal device, enable the terminal device to perform a data transmission method of the mobile terminal described above, the method comprising:
the mobile terminal determines the device type of the target device connected through the OTG;
and if the equipment type of the target equipment is determined to be the mobile terminal, reducing the frequency of the data transmission signal between the mobile terminal and the target equipment.
It is obvious to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be performed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to perform all or part of the above described functions. For the specific working process of the device described above, reference may be made to the corresponding process in the foregoing method embodiment, which is not described herein again.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. A data transmission method of a mobile terminal is characterized by comprising the following steps:
the mobile terminal determines the device type of the target device connected through the OTG;
if the equipment type of the target equipment is determined to be a mobile terminal, the mobile terminal reduces the frequency of a data transmission signal between the mobile terminal and the target equipment;
the method for determining the device type of the target device connected through the OTG by the mobile terminal specifically includes:
the mobile terminal receives a connection message of the target device through an OTG, wherein the connection message carries a device identifier, and the connection message is a connection request message or a connection response message;
the mobile terminal determines the device type of the target device according to the device identification;
and if the equipment type of the target equipment is determined to be a non-mobile terminal, the mobile terminal performs data transmission with the target equipment by adopting a preset transmission signal frequency of a transmission protocol.
2. The method according to claim 1, wherein the reducing, by the mobile terminal, the frequency of the data transmission signal with the target device specifically comprises:
the mobile terminal sends a request message to the target equipment, wherein the request message carries a signal frequency reduction instruction;
and the mobile terminal receives the request response sent by the target equipment.
3. The method of claim 2, wherein the reduced signal frequency indication indicates that the transmission protocol is changed from USB2.0 to USB 1.1.
4. A data transmission apparatus of a mobile terminal, comprising:
the identification module is used for determining the device type of the target device connected through the OTG;
the data transmission module is used for reducing the frequency of a data transmission signal between the target device and the target device if the device type of the target device is determined to be the mobile terminal;
the identification module is specifically configured to:
receiving a connection message of the target device through the OTG, wherein the connection message carries a device identifier, and the connection message is a connection request message or a connection response message;
determining the device type of the target device according to the device identification;
the data transmission module is further configured to:
and if the equipment type of the target equipment is determined to be a non-mobile terminal, carrying out data transmission with the target equipment by adopting a preset transmission signal frequency of a transmission protocol.
5. The apparatus of claim 4, wherein the data transmission module is specifically configured to:
sending a request message to the target device, wherein the request message carries a signal frequency reduction indication;
and receiving a request response sent by the target equipment.
6. The apparatus of claim 5, wherein the reduced signal frequency indication indicates that the transmission protocol is changed from USB2.0 to USB 1.1.
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| WO2015050521A1 (en) * | 2013-10-01 | 2015-04-09 | Canovate Elektronik Endustri Ve Ticaret Anonim Sirketi | Smart server cabinet |
| CN104821995B (en) * | 2015-05-27 | 2017-06-06 | 广东欧珀移动通信有限公司 | A kind of data transfer management method and device |
| CN106776417A (en) * | 2015-11-23 | 2017-05-31 | 西安中兴新软件有限责任公司 | A kind of USB mode control method and device |
| CN105812018A (en) * | 2016-03-11 | 2016-07-27 | 珠海市魅族科技有限公司 | Transmission mode switching method and mobile terminal |
| CN107402893A (en) * | 2016-05-19 | 2017-11-28 | 中兴通讯股份有限公司 | USB switching method and device, system |
| CN107239425A (en) * | 2017-05-23 | 2017-10-10 | 北京小米移动软件有限公司 | Data transmission set control method and device |
| CN107026797A (en) * | 2017-05-23 | 2017-08-08 | 上海斐讯数据通信技术有限公司 | A kind of method and wireless router for automatically adjusting USB speed |
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