WO2006002579A1 - Procede de transmission de donnees entre des appareils de reseau - Google Patents

Procede de transmission de donnees entre des appareils de reseau Download PDF

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Publication number
WO2006002579A1
WO2006002579A1 PCT/CN2004/001348 CN2004001348W WO2006002579A1 WO 2006002579 A1 WO2006002579 A1 WO 2006002579A1 CN 2004001348 W CN2004001348 W CN 2004001348W WO 2006002579 A1 WO2006002579 A1 WO 2006002579A1
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WO
WIPO (PCT)
Prior art keywords
data transmission
pipeline
source device
control module
data
Prior art date
Application number
PCT/CN2004/001348
Other languages
English (en)
French (fr)
Inventor
Jingnan Huang
Yujin Luo
Yang Liu
Original Assignee
Lenovo (Beijing) Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lenovo (Beijing) Limited filed Critical Lenovo (Beijing) Limited
Priority to US11/571,427 priority Critical patent/US20080062899A1/en
Priority to EP04797378A priority patent/EP1768312A4/en
Priority to JP2007515763A priority patent/JP2008503116A/ja
Publication of WO2006002579A1 publication Critical patent/WO2006002579A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46Interconnection of networks
    • H04L12/4633Interconnection of networks using encapsulation techniques, e.g. tunneling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46Interconnection of networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/54Store-and-forward switching systems 
    • H04L12/56Packet switching systems
    • H04L12/5691Access to open networks; Ingress point selection, e.g. ISP selection
    • H04L12/5692Selection among different networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/08Protocols for interworking; Protocol conversion
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/16Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
    • H04L69/163In-band adaptation of TCP data exchange; In-band control procedures
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/54Store-and-forward switching systems 
    • H04L12/56Packet switching systems
    • H04L12/5601Transfer mode dependent, e.g. ATM
    • H04L2012/5603Access techniques
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/16Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/18Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/30Definitions, standards or architectural aspects of layered protocol stacks
    • H04L69/32Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
    • H04L69/322Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
    • H04L69/327Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the session layer [OSI layer 5]

Definitions

  • the present invention relates to network technologies, and in particular, to a data transmission method between devices in a network.
  • WLAN wireless local area network
  • Bluetooth infrared
  • infrared infrared
  • two laptops are being transmitted using Bluetooth. If one of the notebook users must leave at this time, they can only re-establish a WLAN connection with a relatively long distance to transmit. Otherwise, the distance between the two notebooks exceeds the Bluetooth transmission range. It will be automatically disconnected and the transmitted data may be lost. This brings inconvenience to the use of notebook users, and the retransmission of data wastes system resources.
  • the main object of the present invention is to provide a method for data transmission between network devices, The method can automatically select an available connection mode for data transmission during data transmission, which is convenient for users to use.
  • a data transmission method between devices in a network where a pipeline control module is set in a network device, and the data transmission process includes the following steps: '.'
  • the pipeline control module of the data transmission source device and the data transmission destination device in the same network encapsulates the different media network connection modes available to the source device and the target device as data transmission pipelines according to the working conditions of the device, and establishes the source device and the target. Data transmission pipeline between devices;
  • the pipeline control module of the source device selects a medium network connection mode in the data transmission pipeline for data transmission;
  • the source device pipeline control module controls to establish a new medium network connection and continue data transmission.
  • the step 1) may include:
  • the source device of the data transmission in the same network and the pipeline control module of the target device for data transmission, and the different medium network connection modes available to the other party are obtained by listening to the network multicast address;
  • the pipeline control module of the source device controls the source device to select an available media network connection mode to establish a network protocol connection with the target device;
  • the pipeline control module of the source device sends a data transmission pipeline establishment request to the target device by using the network protocol connection established in step 12);
  • the pipeline control module of the target device determines whether to agree to establish a data transmission pipeline according to its own working condition, and then returns a data transmission pipeline to the source device to establish a response; if the target device agrees to establish a data transmission pipeline, the source device and the target device are available.
  • Different medium network connection methods are encapsulated into data transmission pipelines;
  • the pipeline control module of the source device determines, according to the data transmission pipeline establishment response returned by the target device, whether the target device agrees to establish a data transmission pipeline, and if so, encapsulates different medium network connection manners that are available to the source device and the target device as data transmission.
  • the pipeline the data transmission pipeline is established successfully; otherwise the data transmission pipeline fails to be established.
  • the step 1) may include the following steps:
  • the pipeline control module of the source device controls the source device and the target device to establish a network protocol connection by using a network protocol of the network in which the target device is located;
  • the pipeline control module of the source device sends a connection to the target device through the network protocol connection established in step 11a) Sending a data transmission pipeline establishment request, the request includes different medium network connection modes available to the user;
  • the pipeline control module of the target device decides whether to agree to establish a data transmission pipeline according to its own working conditions. If it agrees to establish a data transmission pipeline, it encapsulates the different medium network connection methods available to itself and the other party as a data transmission pipeline, and in response Contains different media network connections available to you;
  • the target device returns a data transmission pipeline establishment response to the source device; ⁇ 14b)
  • the pipeline control module of the source device determines whether the target device agrees to establish a data transmission pipeline according to the data transmission pipeline establishment response returned by the target device, and if yes, different available
  • the media network connection mode and the different media network connection methods available to the other party included in the response are encapsulated into data transmission pipes, and the data transmission pipeline is successfully established; otherwise, the data transmission pipeline fails to be established.
  • the pipeline control module of the source device is configured to establish a pipeline command according to an application to be transmitted in the source device, establish a network protocol connection between the source device and the target device, and send a data transmission pipeline establishment request to the target device through the connection;
  • the pipeline control module of the source device receives the response from the data transmission pipeline returned by the target device, and then sends the response to the source device.
  • the setup pipeline command sent by the application includes at least the device identifier of the target device.
  • the pipeline establishment request sent by the pipeline control module of the source device further includes: a device identifier of the source device, a device identifier of the target device, and a desired pipeline duration;
  • the pipeline establishment response returned by the pipeline control module of the target device further includes: a pipeline establishment success or failure information; if the pipeline establishment is successful, the pipeline establishment response further includes: a device identifier, a source device identifier, and a pipeline effective time.
  • the method for encapsulating a data transmission pipeline may include the steps of the source device and the pipeline control module of the target device respectively filling the different media network connection manner information that the source device and the target device are available in the pipeline information table.
  • the method of packaging a data transmission pipeline may include the steps of:
  • the pipeline control module generates different media network connection mode information that is available to the source device and the target device, and determines whether the pipe information table already exists in the device. If not, the pipe information table is created, and the generated information is added. Go to the pipe information table; if it already exists, add the generated information directly to the pipe information table.
  • the different media network connection mode information that is available to the source device and the target device includes: a pipe identifier, a network protocol commonly supported between the pipe devices, and connection address information.
  • the source device and the plurality of target devices perform data transmission, the source device may establish a data transmission pipeline with the plurality of target devices through the pipeline control module.
  • the step 2) may include the steps of:
  • the pipeline control module of the source device determines whether there is an active network protocol connection existing in an available state corresponding to the established data transmission pipeline, and if yes, executing step 22) ;
  • step 22 select a network protocol from the established data transmission pipeline to try to establish a new network protocol connection. After the connection is successfully established, go to step 22). If the connection establishment fails, select the next supported network protocol to try. If the connection cannot be established after all the matching protocols are tried, the source device should report that the data transmission pipeline is unavailable, and the process ends.
  • the pipeline control module puts the data to be sent into the task queue of the active network protocol connection currently available, and sends the data to the target device.
  • the step 22) the process of putting the data to be sent into the task queue of the currently available network protocol connection may include the following steps:
  • the pipeline control module determines the amount of data waiting to be sent on the available connection and the average speed of the data transmitted by the network connection. If the amount of data waiting to be sent is too large or the average speed of the data transmitted by the network connection is too small, execution is performed. Step 22b); otherwise, the data to be sent is put into the task queue of the currently available network protocol connection;
  • the pipeline control module finds whether there are currently other network protocol connections available, and if yes, returns to step 22a); otherwise, in the data transmission pipeline, selects a network protocol that matches the source device and the target, and attempts to establish a new network protocol. Connection, if the establishment is successful, put the data to be sent into the task queue of the newly established network protocol connection; otherwise, put the data to be sent into the task team connected to the currently available network protocol! ].
  • the pipeline control module of the source device After receiving the data transmission command sent by the application in the source device to transmit data, the pipeline control module of the source device performs step 21);
  • the pipeline control module of the source device returns the data transmission success or failure result to the application to be transmitted after the data transmission is completed or failed.
  • the data transmission command sent by the application includes at least a pipeline identifier, a target device identifier, a target application identifier, and source data to be sent;
  • the data to be sent includes at least: a device identifier of the source device, an application identifier of the sent data, a target device identifier, a target application identifier, and source data to be sent;
  • the pipeline control module of the target device After receiving the data, the pipeline control module of the target device will, based on the target application identifier in the data, The data is distributed to the target program in the target device.
  • the step 3) may include the steps of:
  • the pipeline control module of the source device selects a new medium network connection manner from the data transmission pipeline, establishes a network protocol connection, and if the establishment is successful, continues with the new network protocol connection. Transmit data and notify the source device; otherwise the source device is notified that the data is sent incorrectly and the data transfer pipeline is not available. .
  • the method may further include the steps of: the pipeline control module of the source device sending a pipeline detection request to the target device during the idle period of the data transmission pipeline;
  • the pipeline control module of the target device After receiving the detection request, the pipeline control module of the target device returns a pipeline detection response to the source device according to its working condition;
  • the source device's pipe control module deletes the pipe.
  • the pipeline detection request includes at least: a pipeline availability time expected by the source device;
  • the pipeline detection response includes at least: a pipeline available time
  • the method may further include: the pipeline control module of the source device or the target device deletes the data transmission pipeline after the data transmission is completed, and sends a pipeline shutdown notification to the counterpart device, and the other device deletes the data transmission after receiving the shutdown notification. pipeline.
  • the pipeline control module may send a pipeline shutdown notification to the external device after receiving the pipeline shutdown command sent by the application;
  • the pipeline control module deletes the data transfer pipeline, it returns the success or failure result of the pipeline shutdown to the application that sent the pipeline shutdown command.
  • the method for data transmission between the network devices of the present invention is set in the network device, and the different media network connection modes available between the devices are encapsulated into a data transmission pipeline, which is controlled by the pipeline control module.
  • One of the network connection methods performs data transmission. If the connection is disconnected, the pipeline control module automatically selects another network connection mode from the pipeline to establish a connection for data transmission. Therefore, the present invention realizes that during the transmission process, if the connection is disconnected, the automatic connection to the available connection mode is continued, and the data transmission is continued, which brings convenience to the user.
  • FIG. 1 is a schematic diagram of a data transmission process according to a preferred embodiment of the present invention
  • 2 is a flow chart of establishing a data transmission pipeline of a source device pipeline control module in the embodiment shown in FIG. 1.
  • FIG. 3 is a flow chart of data transmission by a source device pipeline control module in the embodiment shown in FIG. detailed description.
  • a pipeline control module is set in the network device, and the pipeline control module of the data transmission source device and the data transmission target device in the same network separately respectively source the source device and the target according to the working condition of the device
  • the different media network connection modes available for the device are encapsulated into data transmission pipes, and the data transmission pipeline between the source device and the target device is established; a medium network connection mode in the data transmission pipeline is selected for data transmission; the data transmission process needs to be switched.
  • the source device pipeline control module controls to establish a new medium network connection and continues data transmission.
  • the first method includes the following steps:
  • the source device of the data transmission in the same network and the pipeline control module of the target device for data transmission, and the different medium network connection modes available to the other party are obtained by listening to the network multicast address;
  • the source device and the target device select an available media network connection mode to establish a network protocol connection
  • the pipeline control module of the source device sends a data transmission pipeline establishment request to the target device by using the network protocol connection established in step 12);
  • the pipeline control module of the target device decides whether to agree to establish a data transmission pipeline according to its own working condition, and then returns a data transmission pipeline to the source device to establish a response; if the target device agrees to establish a data transmission pipeline, the source device and the target device are available.
  • Different medium network connection methods are encapsulated into data transmission pipelines;
  • the pipeline control module of the source device determines whether the target device agrees to establish a data transmission pipeline according to the data transmission pipeline establishment response returned by the target device, and if so, encapsulates the different media networks that are available to the source device and the target device as the data.
  • the transmission pipeline, the data transmission pipeline is established successfully; otherwise the data transmission pipeline fails to be established.
  • the second way can include the following steps - .
  • the source device and the target device establish a network protocol connection by using the network protocol of the network in which they are located; • 12a) the pipeline control module of the source device sends a data transmission pipe establishment request to the target device through the network protocol connection established in step 11a), The request contains different media network connections available to itself; 13a) The pipeline control module of the target device decides whether to agree to establish a data transmission pipeline according to its own working conditions. If it agrees to establish a data transmission pipeline, it encapsulates the different medium network connection methods available to itself and the other party as a data transmission pipeline, and in response Contains different media network connections available to you;
  • the target device returns a data transmission pipeline to the source device to establish a response
  • the pipeline control module of the source device determines whether the target device agrees to establish a data transmission pipeline according to the data transmission pipeline establishment response returned by the target device, and if yes, different medium network connection modes available to the target device and different available to the other party included in the response
  • the media network connection mode is encapsulated as a data transmission pipeline, and the data transmission pipeline is successfully established; otherwise, the data transmission pipeline fails to be established.
  • the method for encapsulating the data transmission pipeline may be: the pipeline control module of the source device and the target device respectively fill in the different media network connection manner information that the source device and the target device are available in the respective devices.
  • the pipe information table can be used for subsequent lookups.
  • the pipeline control module generates different media network connection manner information that is available to the source device and the target device, and determines whether the pipeline information table already exists in the device. If not, the pipe i information table is established. Add the generated information to the pipe information table; if it already exists, add the generated information directly to the pipe information table.
  • the information about the different media network connection modes in which the source device and the target device are available may include: a pipe identifier, a network protocol supported by the pipe device, and a connection address information.
  • the following embodiment of the present invention is the first implementation manner described above, that is, the source device for data transmission in the same network and the pipeline control module of the target device for data transmission, and the other party is available by listening to the network multicast address. Different media network connections.
  • FIG. 1 is a schematic diagram of a data transmission process in accordance with a preferred embodiment of the present invention.
  • the process includes the following steps: Step 101: The application for transmitting data by the source device sends a pipe establishment command to the pipeline control module in the device, where the pipeline establishment command includes the device identifier of the target device. .
  • Step 102 The pipeline control module of the source device controls establishing a network connection between the source device and the target device, for example, a TCP connection, and sending a pipeline establishment request message to the target device according to the target device identifier in the pipeline establishment command.
  • the pipe establishment request message contains the device identifier of the source device, the device identifier of the target device, and the desired pipeline duration.
  • Step 103 The pipeline control module of the target device determines whether to agree to establish a data transmission pipeline according to its working condition, and then returns a data transmission pipeline establishment response message to the source device; if the target device agrees to establish a data transmission pipeline, the source device and the target device are both The different media network connections available are packaged as data transfer tubes The channel, that is, the different media network connection information that is available to both the source device and the target device is filled in the pipe information table.
  • the pipeline establishment response message includes: a pipeline establishment success or failure information; if the pipeline establishment is successful, the pipeline establishment response further includes: its own device identifier, source device identifier, and pipeline validity time.
  • Step 104 The pipeline control module of the source device determines, according to the data transmission pipeline establishment response returned by the target device, whether the target device agrees to establish a data transmission pipeline, and if yes, encapsulates different medium network connection manners that are available to the source device and the target device as data.
  • the transmission pipeline that is, the information of different media network connection methods that are available to both the source device and the target device is filled in the pipeline information table, and the data transmission pipeline is successfully established; otherwise, the data transmission pipeline fails to be established.
  • the pipeline control module of the source device returns the pipeline establishment result to the application of the source device.
  • Step 105 The application of the source device sends a data transmission command to the source device pipeline control module, where the data transmission command includes a pipeline identifier, a target device identifier, a target application identifier, and source data to be sent. '
  • Step 106 After receiving the data transmission command, the source device pipeline control module selects a network connection mode of a medium in the data transmission pipeline according to the command, and sends the to-be-sent data to the target device pipeline control module.
  • the data to be sent includes at least: a device identifier of the source device, an application identifier of the sent data, a target device identifier, a target application identifier, and source data to be sent.
  • Step 107 After receiving the data, the pipeline control module of the target device distributes the data to the target program in the target device according to the target application identifier in the data.
  • Step 108 The pipeline control module of the source device returns a data transmission success or failure result to the application of the source device after the data transmission is completed or failed to be sent.
  • Step 109 During the idle period of the data transmission pipeline, the pipeline control module of the source device sends a pipeline detection request to the target device, where the pipeline detection request includes a pipeline available time expected by the source device.
  • Step 110 After receiving the detection request, the pipeline control module of the target device returns a pipeline detection response to the source device according to its working condition, where the pipeline detection response includes the pipeline available time, and if the pipeline is unavailable, the pipeline control module of the target device You can fill the pipe detection response with the pipe available time to zero.
  • the source device's pipe control module deletes the pipe.
  • Step 111 After the data transmission is completed, the application of the source device sends a pipeline shutdown command to the pipeline control module of the source device, where the command includes the pipeline identifier to be closed.
  • Step 112 After receiving the pipeline shutdown command, the pipeline control module of the source device deletes the pipeline identifier according to the pipeline identifier In addition to the data transfer pipeline, a pipe close notification is sent to the target device. After receiving the shutdown notification, the target device deletes the data transmission pipeline.
  • Step 113 After deleting the data transmission pipeline, the pipeline control module of the source device returns a pipeline shutdown success or failure result to the application that sends the pipeline shutdown command.
  • steps 102 to 104 are processes for establishing a data transmission pipeline.
  • the specific processing procedure of the source device pipeline control module is shown in FIG. 2.
  • FIG. 2 is a schematic diagram of the source device pipeline control module in the embodiment shown in FIG.
  • the flow chart of the data transmission pipeline includes the following steps: Step 201: After receiving the pipeline establishment command, the pipeline control module of the source device determines whether the data transmission tube of the source device and the target device already exists, and if yes, Step 207 is performed; otherwise, step 202 is performed;
  • Step 202 The pipeline control module of the source device controls the source device and the target device to select an available media network connection manner to establish a network protocol connection. For example: TCP connection.
  • Step 203 Determine whether the established TCP connection is successful. If yes, perform step 204; otherwise, perform step 208.
  • Step 204 The pipeline control module of the source device sends a pipeline establishment request to the beacon device through the TCP connection.
  • Step 205 it is determined whether a pipeline establishment success response is received, if yes, step 206 is performed; otherwise, step 208 is performed;
  • Step 206 Assign a pipe identifier to the successfully established pipeline, and add corresponding information in the pipeline information table.
  • Step 207 Return a pipeline result to the application, report the pipeline establishment success information and the pipeline identifier to the application, and complete the pipeline process.
  • Step 208 Return a pipeline result to the application, report the pipeline establishment failure information to the application, and complete the pipeline process.
  • steps 105 to 108 are data transmission processes.
  • the specific processing process of the source device pipeline control module is shown in FIG. 3
  • FIG. 3 is the source device pipeline control module in the embodiment shown in FIG. 1 .
  • Flowchart for performing data transmission the process includes the following steps: Step 301: After receiving the data transmission command, the pipeline control module of the source device determines whether there is a pipeline corresponding to the pipeline identifier in the command, and if yes, performs step 302; otherwise, Go to step 310.
  • Step 302 Determine whether there is currently a network protocol connection available, and if yes, perform step 303; otherwise, perform step 305.
  • Step 303 Determine the size of the data waiting to be sent on the available network protocol connection and the average speed of the data sent by the network protocol connection. If the amount of data waiting to be sent is too large or the average speed of the data sent by the network connection is too small, then Step 304 is performed, otherwise step 307 is performed.
  • Step 304 Find and determine whether there are currently other network protocol connections available, and if yes, return to step 303; otherwise, go to step 305.
  • Step 305 Select a network protocol that matches the source device and the target in the data transmission pipeline, and try to establish a new network protocol connection.
  • Step 306 Determine whether the establishment of a new network protocol connection is successful. If yes, go to step 307; otherwise, go to step 310.
  • Step 307 Put the data to be sent into a task queue connected to the currently available network protocol, and send the data. ,
  • Step 308 it is judged whether the transmission is successful, if yes, step 309 is performed; otherwise, step 310 is performed.
  • Step 309 Return a data transmission result to the application, report that the data is successfully sent, and the data transmission process ends.
  • Step 310 Return a data transmission result to the application, report the data transmission error and the cause of the error, and the data transmission process ends.
  • the original network protocol connection may be used for data transmission, but only the transmission. The efficiency is relatively low.
  • the pipeline control module of the source device selects a new medium network connection manner from the data transmission pipeline, establishes a network protocol connection, and if the establishment is successful, uses a new one.
  • the network protocol connection continues to transmit data and informs the source device; otherwise the source device is notified that the data is sent incorrectly and the data transfer pipeline is not available.
  • the pipeline control module in this embodiment may be provided with a pipeline establishment interface, a data transmission interface, a pipeline detection interface, and a pipeline closure interface.
  • the source device can implement functions such as pipe establishment, data transfer, pipe detection, and pipe shutdown by calling these interfaces of the pipe control module.
  • the source device in this embodiment is to perform data transmission with multiple target devices
  • the source device separately establishes a data transmission pipeline with multiple target devices through the pipeline control module, and the method for establishing the data transmission pipeline is the same, but each data is
  • the ports used by the transport pipeline are different.
  • the source device only contains one Bluetooth port. If the port is already encapsulated in a data transmission pipe with the target device 1, the port cannot be encapsulated to the source device. In the data transmission pipeline with the target device 2. .
  • the source device is a laptop 1 and the target device is a laptop 2, which are in the same WLAN.
  • the laptop 1 and the notebook 2 respectively have a pipe control module 1 and a pipe control module 2, and both have a WLAN network card and a Bluetooth network card.
  • the WLA network card on the laptop 1 is loaded with TCP/IP protocol, the IP address is 192.168.0.1, the listening port is 1234, the serial port profile is loaded on the Bluetooth network card on the notebook computer 1, and the serial port number is serial port 2.
  • the WLAN network card on the laptop 2 is loaded with TCP/IP protocol, the IP address is 192.168.0.2, the listening port is 2345, the serial port profile is loaded on the Bluetooth network card on the laptop 2, and the serial port number is the serial port 3.
  • the application on the laptop 1 Fc is the client that implements the file transfer function
  • the application Fs on the laptop 2 is the server that implements the file transfer function.
  • the laptop 1 and the laptop 2 listen to the different media network connections available to the network multicast address through the listening port 1234 and the listening port 2345, respectively.
  • the process of transferring the data from the Fc of the notebook computer 1 to the Fs of the notebook computer 2 may include: 1.
  • the Fc of the notebook computer 1 sends a pipe creation command to the pipe control module 1.
  • Pipeline Control Module 1 Select a medium network connection mode for both laptop 1 and laptop 2 to establish a network protocol connection.
  • the TCP/IP protocol is selected to establish a TCP connection between the laptop 1 and the notebook computer.
  • Pipeline Control Module 1 sends a pipe request message to the laptop 2 via the established TCP connection.
  • the pipe request message is shown in Table 1. '
  • the pipe control module 2 in the notebook computer 2 accepts the pipe establishment request according to the current working condition of the notebook computer 2, and sends a pipe establishment response message to the notebook 1.
  • the pipeline The establishment response message is shown in Table 2.
  • the software module on the laptop 1 reports the success or failure of the pipeline to the program Fc.
  • the Fc receives the report of the successful establishment of the pipeline, it can send data to the Fs through the pipeline.
  • the data transmission message is shown in Table 3:
  • Table 3 where the Data field can also be source data encapsulated in other forms.
  • the software module on the notebook 1 can create a new TCP connection to meet the data transmission requirements.
  • the pipe information table is shown in Table 4: .
  • SerialPort 2 Network Protocol Information List Data to be sent Socket: 123 : 100KB Each TCP connection is currently pending
  • Socket 126:200KB The amount of data sent.
  • Pipeline-related program identification ProgramlD The application ID associated with this pipe, including the application that created the pipe and the application ID that uses the pipe
  • the pipe control module of the laptop 1 records the location of the current data transmission, and selects the SerialPort from the data transmission pipe: 2 Try to connect, if the connection is established If successful, the pipe control module of laptop 1 continues to send data through SerialPort: 2 based on the recorded data location. If the connection establishment fails, the pipeline control module notifies Fc that the data 'transmission error has occurred and the current pipeline is not available.
  • the pipe control module of the notebook 1 can periodically send a pipe detection message to the laptop 2 to check the availability of the pipe.
  • the pipeline detection request message is shown in Table 5:
  • the pipeline control module of the notebook computer 2 can send a pipeline detection response message according to the actual situation. If the load on the laptop 2 is too large at this time, the notebook is powered
  • the pipeline control module of Brain 2 can send a detection response message with a pipeline available time of 0. The message is shown in Table 6:
  • it also applies to wired data transmission between network devices on a wired network.
  • the method for data transmission between network devices of the present invention can automatically select an available connection mode for data transmission during data transmission, which is convenient for users to use and save system resources.

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Description

一种网络中的设备间的数据传输方法
技术领域
本发明涉及网络技术, 特别涉及一种网络中的设备间的数据传输方法。 背景技术 , ,
随着各种无线网络技术的逐步普及,越来越多的网络设备通过无线网络与其他网 络设备进行连接, 进而在无线连接的基础上发送、 接收信息。
由于无线信号所具有的不稳定特性、无线信号强度随着距离而衰减的特性以及拥 有无线连接能力的设备的高度移动特性, 使得网络应用程序开发者在开发基于网络连 接尤其是无线网络连接的应用时必须付出额外的精力处理网络连接的建立、 维持、 检 测过程, 同时需要在应用的各个环节中加入足够多的网络连接异常处理, 给应用程序 的开发带来了诸多的不便。
另一方面,越来越多的网络设备同时具备一种以上的网络连接方式,如笔记本往 往同时具备无线局域网 (WLAN)和蓝牙 (Bluetooth)、 红外等多种网络连接能力, 而这些网络连接手段单一像用的情况下往往存在着不稳定因素。 比如 WLAN连接的 传输距离虽然相对较远, 但信号受环境影响较大, 而 Bluetooth连接和红外连接的传 输距离非常有限。
目前,虽然有的网络设备同时具备一种以上的网络连接方式,但网络设备之间传 输一次数据, 只能选择一种网络连接方式进行。 一旦在数据传输过程中, 出现异常情 况连接即被断开, 则用户必须重新建立连接、 重新传输。 如果网络不好还需要换其他 连接方式或以原连接方式多次重新建立连接, 不能在传输过程中自动切换到可用的连 接方式上, 给用户使用带来了不便。 另外, 这个过程中, 如果需要一次传输的信息没 有完全传输完毕, 已经传输的部分信息往往需要重新传输, 又浪费了系统资源。
例如, 两台笔记本电脑正采用 Bluetooth进行传输, 如果此时其中一台笔记本用 户必须离开, 只能重新建立连接距离相对较远的 WLAN连接进行传输, 否则两台笔 记本距离超出 Bluetooth传输范围, 接就会自动断开, 传输的数据可能丢失。 这就 给笔记本用户带来了使用的不便, 重新传输数据又浪费了系统资源。
发明内容
有鉴于此, 本发明的主要目的在于提供一种网络设备间数据传输的方法, 该 方法能够在数据传输过程中自动选择可用的连接方式进行数据传输, 方便用户使 用。 ■
为达到上述目的, 本发明的技术方案具体是这样实现的:
一种网络中设备间的数据传输方法,在网络设备中设置管道控制模块, 数据传输 过程包括以下步骤: '.'
1 ) 同一网络中数据发送源设备和数据发送目标设备的管道控制模块根据设备工 作情况, 分别将源设备和目标设备都可用的不同介质网络连接方式封装为数据传输管 道, 并建立源设备与目标设备间的数据传输管道;
2)源设备的管道控制模块, 选择数据传输管道中的一种介质网络连接方式进行 数据传输;
3 ) 数据传输过程中需要切换到另一种介质网络连接方式时, 则源设备管道控制 模块控制建立新介质网络连接, 继续进行数据传输。
其中, 所述步骤 1 )可以包括:
11 )同一网络中数据发送的源设备和数据发送的目标设备的管道控制模块, 通过 侦听网络多播地址获知对方可用的不同介质网络连接方式;
12)源设备的管道控制模块控制源设备选择一种可用介质网络连接方式与目标设 备建立网络协议连接;
13 )源设备的管道控制模块通过步骤 12) 建立的网络协议连接, 向目标设备发 送数据传输管道建立请求;
14 ) 目标设备的管道控制模块根据自身工作情况决定是否同意建立数据传输管 道,然后向源设备返回数据传输管道建立响应;如果目标设备同意建立数据传输管道, 则将源设备和目标设备都可用的不同介质网络连接方式封装为数据传输管道;
15 )源设备的管道控制模块根据目标设备返回的数据传输管道建立响应判断目标 设备是否同意建立数据传输管道, 如果是, 则将源设备和目标设备都可用的不同介质 网络连接方式封装为数据传输管道, 数据传输管道建立成功; 否则数据传输管道建立 失败。
所述步骤 1 ) 可以包括以下步骤:
11a)源设备的管道控制模块控制源设备与目标设备用其所在网络的网络协议, 建立网络协议连接;
12a)源设备的管道控制模块通过步骤 11a)建立的网络协议连接, 向目标设备发 送数据传输管道建立请求, 该请求中包含自身可用的不同介质网络连接方式;
13a) 目标设备的管道控制模块根据自身工作情况决定是否同意建立数据传输管 道, 如果同意建立数据传输管道, 则将自身和对方都可用的不同介质网络连接方式封 装为数据传输管道, 并在该响应中包含自身可用的不同介质网络连接方式;
目标设备向源设备返回数据传输管道建立响应; ― 14b) 源设备的管道控制模块根据目标设备返回的数据传输管道建立响应判断目 标设备是否同意建立数据传输管道, 如果是, 则将自身可用的不同介质网络连接方式 和响应中包含的对方可用的不同介质网络连接方式封装为数据传输管道, 数据传输管 道建立成功; 否则数据传输管道建立失败。
源设备的管道控制模块是可以拫据源设备中要传输数据的应用程序发送的建立 管道命令, 建立源设备与目标设备的网络协议连接, 并通过该连接向目标设备发送数 据传输管道建立请求;
源设备的管道控制模块收到目标设备返回的数据传输管道建立响应后,向源设备
'中要传输数据的应用程序返回管道建立是否成功结果。
所述应用程序发送的建立管道命令至少包含目标设备的设备标识。
所述源设备的管道控制模块发送的管道建立请求还包含:源设备的设备标识、 目 标设备的设备标识、 期望的管道持续时间;
所述目标设备的管道控制模块返回的管道建立响应还包含:管道建立成功或失败 信息; 如果管道建立成功, 该管道建立响应还包含: 自身的设备标识、 源设备标识、 管道有效时间。
所述封装数据传输管道的方法可以包括源设备和目标设备的管道控制模块在各 自所在设备中分别将源设备和目标设备都可用的不同介质网络连接方式信息填入到 管道信息表中的步骤。 ·
所述封装数据传输管道的方法可以包括步骤:
管道控制模块生成本次的源设备和目标设备都可用的不同介质网络连接方式信 息, 并判断本设备中是否已经存在管道信息表, 如果不存在, 则建立管道信息表, 并 将生成的信息添加到管道信息表中; 如果已经存在, 则直接将生成的信息添加到管道 信息表中。
所述源设备和目标设备都可用的不同介质网络连接方式信息包含: 管道标识、该 管道设备间共同支持的网络协议、 连接地址信息。 所述的源设备与多个目标设备进行数据传输时,该源设备可以分别通过管道控制 模块与多个目标设备建立数据传输管道。
所述步骤 2) 可以包括步骤:
21 )源设备的管道控制模块判断当前是否存在与已建立的数据传输管道对应的处 于可用状态的活动网络协议连接存在, 如果存在则执行步骤 22);
如果不存在,则从已建立的数据传输管道中选取一个网络协议尝试建立新的网络 协议连接, 连接建立成功后则执行步骤 22), 连接建立失败则选取下一个共同支持的 网络协议进行尝试, 如果尝试所有的匹配协议后仍然无法建立连接, 则应向源设备报 告数据传输管道不可用, 结束流程;
22)管道控制模块将待发送的数据放入当前可用状态的活动网络协议连接的任务 队列, 向目标设备发送数据。
所述步骤 22) 将待发送的数据放入当前可用网络协议连接的任务队列的过程可 以包括步骤: .
22a) 管道控制模块判断在该可用连接上等待发送的数据量大小及该网络连接发 送数据的平均速度大小, 如果等待发送的数据量过大或该网络连接发送数据的平均速 度太小, 则执行步骤 22b); 否则, 将待发送的数据放入当前可用网络协议连接的任务 队列;
22b) 管道控制模块查找当前是否存在可用的其他网络协议连接, 如果存在, 则 返回步骤 22a); 否则在数据传输管道中选择根据源设备与目标共 ^匹配的网络协议, 尝试建立新的网络协议连接, 如果建立成功, 则将待发送的数据放入新建立的网络协 议连接的任务队列;否则,将待发送的数据放入原当前可用网络协议连接的任务队歹!]。
源设备的管道控制模块在接收到源设备中要传输数据的应用程序发送的数据传 输命令后, 执行步骤 21 );
源设备的管道控制模块在数据发送完成或发送失败后,向要传输数据的应用程序 返回数据发送成功或失败结果。
所述应用程序发送的数据传输命令至少包含管道标识、 目标设备标识、 目标应用 程序标识和需要发送的源数据;
所述待发送的数据中至少包含: 源设备的设备标识、 发送数据的应用程序标识、 目标设备标识、 目标应用程序标识、 需要发送的源数据;
目标设备'的管道控制模块在接收到数据后,根据数据中的目标应用程序标识,将 数据分发给目标设备中的目标程序。
所述步骤 3 ) 可以包括步骤:
数据传输过程中传输数据的网络协议连接断开时,源设备的管道控制模块从数据 传输管道中选择新的介质网络连接方式, 建立网络协议连接, 如果建立成功, 则用新 的网络协议连接继续传输数据并通知源设备; 否则通知源设备数据发送错误且数据传 输管道不可用。 .
该方法可以进一步包括步骤: 数据传输管道空闲期间, 源设备的管道控制模块向 目标设备发送管道检测请求;
目标设备的管道控制模块收到该检测请求后,根据自身工作情况向源设备返回管 道检测响应; '
如果源设备未收到管道响应或收到的管道响应是管道不可用,则源设备的管道控 制模块删除该管道。
所述的管道检测请求至少包含: 源设备期望的管道可用时间;
所述管道检测响应中至少包含: 管道可用时间;
如果源设备收到的管道响应中, 管道可用时间为零, 则该管道不可用。
该方法可以进一步包括:源设备或目标设备的管道控制模块在数据传输完成后删 除该数据传输管道, 并向对方标设备发送管道关闭通知, 对方设备在收到该关闭通知 后, 删除该数据传输管道。
所述管道控制模块是在接收到应用程序发送的管道关闭命令后,可以向对方设备 发送管道关闭通知;
管道控制模块删除该数据传输管道后,向发送管道关闭命令的应用程序返回管道 关闭成功或失败结果。
由上述的技术方案可见, 本发明的这种网络设备间数据传输的方法, 在网络 设备中设置, 将设备间可用的不同介质网络连接方式封装为数据传输管道, 由管 道控制模块控制用该管道中的一种网络连接方式进行数据传输,如果该连接断开, 则管道控制模块自动从管道中选择另一种网络连接方式建立连接进行数据传输。 因此本发明实现了传输过程中, 如果连接断开, 自动切换到可用的连接方式上, 继续进行数据传输, 给用户使用带来了方便。
附图说明
图 1为本发明一个优选实施例的数据传输过程的示意图; 图 2为图 1所示实施例中源设备管道控制模块建立数据传输管道的流程图; 图 3为图 1所示实施例中源设备管道控制模块进行数据传输的流程图。 具体实施方式 .
为使本发明的目的、技术方案及优点更加清楚明白, 以下参照附图并举实施 例, 对本发明进一步详细说明。
本发明的这种网络中设备间的数据传输方法, 在网络设备中设置管道控制模块, 同一网络中数据发送源设备和数据发送目标设备的管道控制模块根据设备工作情况, 分别将源设备和目标设备都可用的不同介质网络连接方式封装为数据传输管道, 并建 立源设备与目标设备间的数据传输管道; 选择数据传输管道中的一种介质网络连接方 式进行数据传输; 数据传输过程中需要切换到另一种介质网络连接方式时, 则源设备 管道控制模块控制建立新介质网络连接, 继续进行数据传输。
本发明中将源设备和目标设备都可用的不同介质网络连接方式封装为数据传输 管道, 并建立源设备与目标设备间的数据传输管道有两种实现方式:
第一种方式包括以下步骤:
11 )同一网络中数据发送的源设备和数据发送的目标设备的管道控制模块, 通过 侦听网络多播地址获知对方可用的不同介质网络连接方式;
12)源设备与目标设备选择一种可用介质网络连接方式建立网络协议连接;
13 )源设备的管道控制模块通过步骤 12) 建立的网络协议连接, 向目标设备发 送数据传输管道建立请求;
14) 目标设备的管道控制模块根据自身工作情况决定是否同意建立数据传输管 道,然后向源设备返回数据传输管道建立响应;如果目标设备同意建立数据传输管道, 则将源设备和目标设备都可用的不同介质网络连接方式封装为数据传输管道;
15 )源设备的管道控制模块根据目标设备返回的数据传输管道建立响应判断目标 设备是否同意建立数据传输管道, 如果是, 则将源设备和目标设备都可用的不同介质 网络.连接方式封装为数据传输管道, 数据传输管道建立成功; 否则数据传输管道建立 失败。
第二种方式可以包括以下步骤- .
11a)源设备与目标设备用其所在网络的网络协议, 建立网络协议连接; · 12a)源设备的管道控制模块通过步骤 11a)建立的网络协议连接, 向目标设备发 送数据传输管道建立请求, 该请求中包含自身可用的不同介质网络连接方式; 13a) 目标设备的管道控制模块根据自身工作情况决定是否同意建立数据传输管 道, 如果同意建立数据传输管道, 则将自身和对方都可用的不同介质网络连接方式封 装为数据传输管道, 并在该响应中包含自身可用的不同介质网络连接方式;
目标设备向源设备返回数据传输管道建立响应;
14b)源设备的管道控制模块根据目标设备返回的数据传输管道建立响应判断目 标设备是否同意建立数据传输管道, 如果是, 则将自身可用的不同介质网络连接方式 和响应中包含的对方可用的不同介质网络连接方式封装为数据传输管道, 数据传输管 道建立成功; 否则数据传输管道建立失败。
上述两种实现方式中,封装数据传输管道的方法都可以是:源设备和目标设备的 管道控制模块在各自所在设备中分别将源设备和目标设备都可用的不同介质网络连 接方式信息填入到管道信息表中, 该管道信息表可以用于后续査找。 具体来说, 管道 控制模块生成本次的源设备和目标设备都可用的不同介质网络连接方式信息, 并判断 本设备中是否已经存在管道信息表,:如果不存在, 则建立管 i 信息表, 并将生成的信 息添加到管道信息表中; 如果已经存在, 则直接将生成的信息添加到管道信息表中。 其中源设备和目标设备都可用的不同介质网络连接方式信息可以包含: 管道标识、 该 管道设备间共同支持的网络协议、 连接地址信息。
以下本发明介绍的本实施例是上述的第一种实现方式, 也就是说同一网络中 数据发送的源设备和数据发送的目标设备的管道控制模块, 通过侦听网络多播地址获 知了对方可用的不同介质网络连接方式。
参见图 1, 图 1为本发明一个优选实施例的数据传输过程示意图。 该流程包 括以下步骤- 步骤 101, 源设备要传输数据的应用程序向本设备中的管道控制模块发送管 道建立命令, 该管道建立命令中包含目标设备的设备标识。 .
步骤 102, 源设备的管道控制模块控制建立源设备与目标设备的网络连接, 例,如: TCP连接, 并根据管道建立命令中的目标设备标识, 向目标设备发送管道 建立请求消息。 该管道建立请求消息中包含了源设备的设备标识、 目标设备的设 备标识以及期望的管道持续时间。
步骤 103, 目标设备的管道控制模块根据自身工作情况决定是否同意建立数据传 输管道, 然后向源设备返回数据传输管道建立响应消息; 如果目标设备同意建立数据 传输管道, 则将源设备和目标设备都可用的不同介质网络连接方式封装为数据传输管 道, 也就是将源设备和目标设备都可用的不同介质网络连接方式信息填入到管道信息 表中。 管道建立响应消息中包含: 管道建立成功或失败信息; 如果管道建立成功, 该 管道建立响应还包含: 自身的设备标识、 源设备标识、 管道有效时间。
步骤 104, 源设备的管道控制模块根据目标设备返回的数据传输管道建立响 应判断目标设备是否同意建立数据传输管道, 如果是, 则将源设备和目标设备都 可用的不同介质网络连接方式封装为数据传输管道, 也就是将源设备和目标设备 都可用的'不同介质网络连接方式信息填入到管道信息表中, 数据传输管道建立成 功; 否则数据传输管道建立失败。 源设备的管道控制模块向源设备的应用程序返 回管道建立结果。
步骤 105, 源设备的应用程序向源设备管道控制模块发送数据传输命令, 该 数据传输命令中包含管道标识、 目标设备标识、 目标应用程序标识和需要发送的 源数据。 '
步骤 106, 源设备管道控.制模块收到数据传输命令后, 根据该命令选择数据 传输管道中一种介质的网络连接方式, 将待发送数据发送给目标设备管道控制模 块。 其中待发送的数据中至少包含: 源设备的设备标识、 发送数据的应用程序标识、 目标设备标识、 目标应用程序标识、 需要发送的源数据。
步骤 107, 目标设备的管道控制模块在接收到数据后, 根据数据中的目标应用程 序标识, 将数据分发给目标设备中的目标程序。
步骤 108, 源设备的管道控制模块在数据传输完成或发送失败后, 向源设备 的应用程序返回数据发送成功或失败结果。
步骤 109, 数据传输管道空闲期间, 源设备的管道控制模块向目标设备发送 管道检测请求, 该管道检测请求中包含源设备期望的管道可用时间。
步骤 110, 目标设备的管道控制模块收到该检测请求后,根据自身工作情况向源 设备返回管道检测响应, 该管道检测响应中包含管道可用时间, 如果管道不可用, 则 目标设备的管道控制模块可以将管道检测响应中包含管道可用时间填为零。
如果源设备未收到管道响应或收到的管道响应是管道不可用,则源设备的管道控 制模块删除该管道。
步骤 111, 源设备的应用程序在数据传输完成后, 向源设备的管道控制模块发送 管道关闭命令, 该命令中包含要关闭的管道标识。
步骤 112, 源设备的管道控制模块收到管道关闭命令后, 根据其中的管道标识删 除该数据传输管道,并向目标设备发送管道关闭通知。目标设备在收到该关闭通知后, 删除该数据传输管道。
步骤 113, 源设备的管道控制模块删除该数据传输管道后, 向发送管道关闭命令 的应用程序返回管道关闭成功或失败结果。
本实施例中, 步骤 102〜步骤 104是建立数据传输管道的过程, 该过程中源 设备管道控制模块的具体处理过程参见图 2, 图 2为图 1所示实施例中源设备管 道控制模块建立数据传输管道的流程图, 该流程包括以下步骤: . 步骤 201 , 源设备的管道控制模块收到管道建立命令后, 判断是否已经存在 源设备与目标设备的数据传输管填, 如果已经存在, 则执行步骤 207 ; 否则执行 步骤 202;
步骤 202, 源设备的管道控制模块控制源设备与目标设备选择一种可用介质 网络连接方式建立网络协议连接。 例如: TCP连接。
步骤 203, 判断建立的 TCP连接是否成功, 如果是, 则执行步骤 204; 否则 执行步骤 208。
步骤 204,源设备的管道控制模块通过 TCP连接向貝标设备发送管道建立请 求。
步骤 205, 判断是否收到管道建立成功响应, 如果是则执行步骤 206 ; 否则 执行步骤 208 ;
步骤 206, 为成功建立的管道分配管道标识,在管道信息表中增加相应信息。 步骤 207、 向应用程序返回建立管道结果, 将管道建立成功信息及管道标识 报告给应用程序, 建立管道过程结束。
步骤 208、 向应用程序返回建立管道结果, 将管道建立失败信息报告给应用 程序, 建立管道过程结束。
图 1所示实施例中, 步骤 105〜步骤 108是数据传输的过程, 该过程中源设 备管道控制模块的具体处理过程参见图 3 , 图 3为图 1所示实施例中源设备管道 控制模块进行数据传输的流程图, 该流程包括以下步骤- 步骤 301, 源设备的管道控制模块收到数据传输命令后, 判断是否存在与命 令中管道标识相应的管道, 如果有则执行步骤 302; 否则, 执行步骤 310。
步骤 302, 判断当前是否有可用的网络协议连接, 如果有则执行步骤 303 ; 否则执行步骤 305。 步骤 303, 判断在可用的网络协议连接上等待发送的数据量大小及该网络协 议连接发送数据的平均速度大小, 如果等待发送的数据量过大或该网络连接发送 数据的平均速度太小, 则执行步骤 304, 否则执行步骤 307。
步骤 304, 查找并判断当前是否存在可用的其他网络协议连接, 如果存在, 则返回步骤 303 ; 否则, 执行步骤 305。
.步骤 305, 在数据传输管道中选择根据源设备与目标共同匹配的网络协议, 尝试建立新的网络协议连接。
步骤 306, 判断建立新的网络协议连接是否建立成功, 如果是, 则执行步骤 307; 否则执行步骤 310。
步骤 307, 将待发送的数据放入当前可用网络协议连接的任务队列中, 发送 数据。,
步骤 308, 判断发送是否成功, 如果是则执行步骤 309 ; 否则执行步骤 310。 步骤 309, 向应用程序返回数据发送结果, 报告数据发送成功, 数据传输过 程结束。
步骤 310, 向应用程序返回数据发送结果, 报告数据发送出错及出错原因, 数据传输过程结束。
上述过程中,如果因为等待发送的数据量过大或该网络连接发送数据的平均 速度太小, 重新建立网络协议连接而没有成功时, 也可以用原来的网络协议连接 进行数据传输, 只是传输的效率比较低。
如果数据传输过程中传输数据的网络协议因为外界因素连接被断开,源设备的管 道控制模块从数据传输管道中选择新的介质网络连接方式, 建立网络协议连接, 如果 建立成功, 则用新的网络协议连接继续传输数据并通知源设备; 否则通知源设备数据 发送错误且数据传输管道不可用。
本实施例中的管道控制模块可以设置管道建立接口、 数据传输接口、 管道检 测接口、 管道关闭接口。 源设备可以通过调用管道控制模块的这些接口来实现管 道建立、 数据传输、 管道检测和管道关闭等功能。
另外, 如果本实施例中的源设备要与多个目标设备进行数据传输, 则该源设备分 别通过管道控制模块与多个目标设备建立数据传输管道, 建立数据传输管道的方法相 同, 但各个数据传输管道使用的端口不同。 例如: 源设备只包含一个蓝牙端口, 如果 该端口已经封装在与目标设备 1的一个数据传输管道中, 则该端口不能封装到源设备 与目标设备 2的数据传输管道中。 .
如果图 1所示实施例中, 源设备为笔记本电脑 1, 目标设备为笔记本电脑 2, 它们处于同一个 WLAN中。笔记本电脑 1和笔记本电脑 2分别安装了管道控制模 块 1和管道控制模块 2, 且都具有 WLAN网卡和蓝牙网卡。 笔记本电脑 1上的 WLA 网卡上加载了 TCP/IP协议, IP地址为 192.168.0.1,侦听端口为 1234, 笔记 本电脑 1上的蓝牙网卡上加载了串口 Profile, 模拟出的串口号为串口 2。 笔记本 电脑 2上的 WLAN网卡加载了 TCP/IP协议, IP地址为 192.168.0.2, 侦听端口为 2345, 笔记本电脑 2上的蓝牙网卡上加载了串口 Profile, 模拟出的串口号为串口 3。 笔记本电脑 1上的应用程序 Fc为实现文件传输功能的客户端, 笔记本电脑 2 上的应用程序 Fs为实现文件传输功能的服务端。
笔记本电脑 1和笔记本电脑 2分别通过侦听端口 1234和侦听端口 2345侦听 到对方向网络多播地址发送的自身可用的不同介质网络连接方式。
这样笔记本电脑 1的 Fc向笔记本电脑 2的 Fs传输数据的过程可以包括: 1.笔记本电脑 1的 Fc向管道控制模块 1发送建立管道命令。
2.管道控制模块 1选择一种笔记本电脑 1和笔记本电脑 2都可用的介质网络 连接方式, 建立网络协议连接, 本实施例选择 TCP/IP协议建立笔记本电脑 1和笔 记本电脑 2间的 TCP连接。
3.管道控制模块 1通过建立的 TCP连接向笔记本电脑 2发送建立管道请求消 息。 该管道请求消息如表 1所示。 '
Figure imgf000013_0001
表 1
4.笔记本电脑 2中的管道控制模块 2收到管道建立请求消息后, 根据笔记本电 脑 2当前的工作情况接受管道建立请求, 向笔记本 1发送管道建立响应消息。 该管道 建立响应消息如表 2所示。
Figure imgf000014_0001
表 2 如果笔记本电脑 2中的管道控制模块 2不接受管道建立请求, 则在表 2所示 响应消息中的 ResultCode域值为失败。
5.笔记本电脑 1上的软件模块收到管道建立响应消息后, 向程序 Fc报告管道建 立管道成功或失败结果。 Fc收到管道建立成功的结果报告后, 即可通过管道向 Fs发 送数据。 数据发送消息如表 3所示:
Figure imgf000014_0002
表 3 其中, Data域也可以是其他形式封装的源数据。
本实施例中, 如果笔记本 1上的应用程序 Fc大量的向 Fs发送数据时, 则笔 记本 1上的软件模块可以通过创建新的 TCP连接以满足数据传输需求。 此时, 管 道信息表如表 4所示: . 、 设备标识 Urn:IG S: device: devicelD :xxxxx 笔记本 2的设备标识 可用连接列表 ProtocoLTCP 笔记本 1与笔记本 2建立
Socket: 123 的两个 TCP连接
Socket: 126
匹配协议列表 TCP: 192.168.0.2: 2345 可与笔记本 2建立连接的
SerialPort: 2 网络协议信息列表 待发送数据情况 Socket: 123 :100KB 各个 TCP连接上目前待发
Socket: 126:200KB 送的数据量.
管道可用时间 1800 可用时间: 30秒
管道相关程序标识 ProgramlD:! 与此管道相关的应用程序 标识, 包括创建管道的应 用程序及使用该管道的应 用程序标识
表 4
如果在数据传输过程中, 由于外界的因素, 两个 TCP连接被断开, 则笔记本电 脑 1的管道控制模块记录当前数据发送的位置, 从数据传输管道中选择 SerialPort: 2 尝试连接,如果连接建立成功,则笔记本电脑 1的管道控制模块根据记录的数据位置, 继续通过 SerialPort: 2发送数据。如果连接建立失败, 则管道控制模块通知 Fc, 数据' 传输出错且当前管道不可用。
. 笔记本电脑 1和笔记本电脑 2在待发送的数据均发送完成后也就是管道空闲期 间, 笔记本电脑 1的管道控制模块可以定期的向笔记本电脑 2发送管道检测消息以检 测管道的可用性。 管道检测请求消息如表 5所示:
Figure imgf000015_0001
表 5 .
笔记本电脑 2的管道控制模块收到笔记本电脑 1的管道检测请求后, 可以根据 实际情况发送管道检测响应消息。 如果此时笔记本电脑 2上的负载过大, 则笔记本电 脑 2的管道控制模块可以发送管道可用时间为 0.的检测响应消息。该消息如表 6所示:
Figure imgf000016_0001
脑与手机之间、 手机之间、 手机与 PDA之间、 PDA之间、 PDA与笔记本电脑之 间等等各种网络设备间的无线数据传输。 当然, 对于有线网络上的网络设备间的 有线数据传输也适用。
由上述的实施例可见, 本发明的这种网络设备间数据传输的方法, 能够在数 据传输过程中自动选择可用的连接方式进行数据传输, 方便用户使用, 节省系统 资源。

Claims

权 利 要 求 书
1.一种网络中设备间的数据传输方法, 其特征在于, 在网络设备中设置管道控制 模块,.数据传输过程包括以下步骤-
1 ) 同一网络中的数据发送源设备和数据发送目标设备的管道控制模块根据设备 工作情况, 分别将源设备和目标设备都可用的不同介质网络连接方式封装为数据传输 管道, 并建立源设备与目标设备间的数据传输管道;
2)源设备的管道控制模块, 选择数据传输管道中的一种介质网络连接方式进行 数据传输; '
3 ) 数据传输过程中需要切换到另一种介质网络连接方式时, 则源设备管道控制 模块控制建立新介质网络连接, 继续进行数据传输。
2.如权利要求 1所述的数据传输方法, 其特征在于, 所述步骤 1 )包括:
11 )同一网络中数据发送的源设备和数据发送的目标设备的管道控制模块, 通过 侦听网络多播地址获知对方可用的不同介质网络连接方式;
12)源设备的管道控制模块控制源设备选择一种可用介质网络连接方式与目标设 备建立网络协议连接;
13 ) 源设备的管道控制模块通过步骤 12)建立的网络协议连接, 向目标设备发 送数据传输管道建立请求;
14) 目标设备的管道控制模块根据自身工作情况决定是否同意建立数据传输管 道,然后向源设备返回数据传输管道建立响应;如果目标设备同意建立数据传输管道, 则将源设备和目标设备都可用的不同介质网络连接方式封装为数据传输管道;
15 )源设备的管道控制模块根据目标设备返回的数据传输管道建立响应判断目标 设备是否同意建立数据传输管道, 如果是, 则将源设备和目标设备都可用的不同介质 网络连接方式封装为数据传输管道, 数据传输管道建立成功; 否则数据传输管道建立 失败。
3.如权利要求 1所述的数据传输方法, 其特征在于, 所述步骤 1 ) 包括:
11a) 源设备的管道控制模块控制源设备与目标设备用其所在网络的网络协议, 建立网络协议连接;
12a)源设备的管道控制模块通过步骤 11a)建立的网络协议连接, 向目标设备发 送数据传输管道建立请求, 该请求中包含自身可用的不同介质网络连接方式;
13a) 目标设备的管道控制模块根据自身工作情况决定是否同意建立数据传输管 道, 如果同意建立数据传输管道, 则将自身和对方都可用的不同介质网络连接方式封 装为数据传输管道, 并在该响应中包含自身可用的不同.介质网络连接方式;
目标设备向源设备返回数据传输管道建立响应;
14b) 源设备的管道控制模块根据目标设备返回的数据传输管道建立响应判断自 标设备是否同意建立数据传输管道, 如果是, 则将自身可用的不同介质网络连接方式 和响应中包含的对方可用的不同介质网络连接方式封装为数据传输管道, 数据传输管 道建立成功; 否则数据传输管道建立失败。
4.如权利要求 2或 3所述的数据传输方法,'其特征在于: 源设备的管道控制模块 是根据源设备中要传输数据的应用程序发送的建立管道命令, 建立源设备与目标设备 的网络协议连接, 并通过该连接向目标设备发送数据传输管道建立请求;
源设备的管道控制模块收到目标设备返回的数据传输管道建立响应后,向源设备 中要传输数据的应用程序返回管道建立是否成功的结果。
5.如权利要求 4所述的数据传输方法, 其特征在于: 所述应用程序发送的建立管 道命令至少包含目标设备的设备标识。
6.如权利要求 2或 3所述的数据传输方法, 其特征在于, 所述源设备的管道控制 模块发送的管道建立请求还包含: 源设备的设备标识、 目标设备的设备标识、 期望的 管道持续时间;
所述目标设备的管道控制模块返回的管道建立响应还包含:管道建立成功或失败 信息; 如果管道建立成功, 该管道建立响应还包含: 自身的设备标识、 源设备标识、 管道有效时间。
7.如权利要求 1、 2或 3中的任何一项所述的数据传输方法, 其特征在于, 所述 封装数据传输管道的方法包括步骤: 源设备和目标设备的管道控制模块在各自所在设 备中分别将源设备和目标设备都可用的不同介质网络连接方式信息填入到管道信息 表中。
8.如权利要求 7所述的数据传输方法, 其特征在于, 所述封装数.据传输管道的方 法包括步骤:
管道控制模块生成本次的源设备和目标设备都可用的不同介质网络连接方式信 息, 并判断本设备中是否已经存在管道信息表, 如果不存在, 则建立管道信息表, 并 将生成的信息添加到管道信息表中; 如果已经存在, 则直接将生成的信息添加到管道 • 信息表中。
9.如权利要求 7所述的数据传输方法, 其特征在于, 所述源设备和目标设备都可 用的不同介质网络连接方式信息包含管道标识, 该管道设备间共同支持的网络协议, 和连接地址信息。
10.如权利要求 1 所述的数据传输方法, 其特征在于: 所述的源设备与多个目标 设备进行数据传输时, 该源设备分别通过管道控制模块与多个目标设备建立数据传输 管道。
11.如权利要求 1所述的数据传输方法, 其特征在于, 所述步骤 2) 包括: 21 )源设备的管道控制模块判断当前是否存在与已建立的数据传输管道对应的处 于可用状态的活动网络协议连接存在, 如果存在则执行步骤 22);
如果不存在,则从已建立的数据传输管道中选取一个网络协议尝试建立新的网络 协议连接, 连接建立成功后则执行步骤 22), 连接建立朱败则选取下一个共同支持的 网络协议进行尝试, 如果尝试所有的匹配协议后仍然无法建立连接, 则应向源设备报5 告数据传输管道不可用;
22)管道控制模块将待发送的数据放入当前可用状态的活动网络协议连接的任务 队列, 向目标设备发送数据。
12.如权利要求 11所述的数据传输方法, 其特征在于, 所述步骤 22)将待发送的 数据放入当前可用网络协议连接的任务队列的过程包括步骤:
0 22a) 管道控制模块判断在该可用连接上等待发送的数据量大小及该网络连接发 送数据的平均速度大小, 如果等待发送的数据量过大或该网络连接发送数据的平均速 度太小, 则执行步骤 22b); 否则, 将待发送的数据放入当前可用网络协议连接的任务 队列;
22b) 管道控制模块查找当前是否存在可用的其他网络协议连接, 如果存在, 则5 返回步骤 22a); 否则在数据传输管道中选择根据源设备与目标共同匹配的网络协议, 尝试建立新的网络协议连接, 如果建立成功, 则将待发送的数据放入新建立的网络协 议连接的任务队列;否则,将待发送的数据放入原当前可用网络协议连接的任务队列。
13.如权利要求 11所述的数据传输方法, 其特征在于: 源设备的管道控制模块在 接收到源设备中要传输数据的应用程序发送的数据传输命令后, 执行步骤 21 ) ;
0 源设备的管道控制模块在数据发送完成或发送失败后,向要传输数据的应用程序 返回数据发送成功或失败结果。
14.如权利要求 13所述的数据传输方法, 其特征在于: 所述应用程序发送的数据 传输命令至少包含管道标识, 目标设备标识, 目标应用程序标识和需要发送的源数据; 所述待发送的数据中至少包含源设备的设备标识,发送数据的应用程序标识, 目 标设备标识, 目标应用程序标识, 和需要发送的源数据;
目标设备的管道控制模块在接收到数据后,根据数据中的目标应用程序标识,将 数据分发给目标设备中的目标程序。
15.如权利要求 1所述的数据传输方法, 其特征在于, 所述步骤 3 ) 包括: 数据传输过程中传输数据的网络协议连接断开时,源设备的管道控制模块从数据 传输管道中选择新的介质网络连接方式, 建立网络协议连接, 如果建立成功, 则用新 的网络协议连接继续传输数据并通知源设备; 否则通知源设备数据发送错误且数据传 输管道不可用。
16.如权利要求 1 所述的数据传输方法, 其特征在于, 该方法进一步包括: 数据 传输管道空闲期间, 源设备的管道控制模块向目标设备发送管道检测请求;
目标设备的管道控制模块收到该检测请求后,根据自身工作情况向源设备返回管 道检测响应;
如果源设备未收到管道响应或收到的管道响应是管道不可用,则源设备的管道控 制模块删除该管道。 ―
17.如权利要求 16所述的数据传输方法, 其特征在于, 所述的管道检测请求至少 包含: 源设备期望的管道可用时间;
所述管道检测响应中至少包含: 管道可用时间;
如果源设备收到的管道响应中, 管道可用时间为零, 则该管道不可用。
18.如权利要求 1 所述的数据传输方法, 其特征在于, 该方法进一步包括: 源设 备或目标设备的管道控制模块在数据传输完成后删除该数据传输管道, 并向对方标设 备发送管道关闭通知, 对方设备在收到该关闭通知后, 删除该数据传输管道。
19.如权利要求 1 所述的数据传输方法, 其特征在于, 所述管道控制模块是在接 收到应用程序发送的管道关闭命令后, 向对方设备发送管道关闭通知;
管道控制模块删除该数据传输管道后, 向发送管道关闭命令的应用程序返回 管道关闭成功或失败结果。
PCT/CN2004/001348 2004-06-30 2004-11-24 Procede de transmission de donnees entre des appareils de reseau WO2006002579A1 (fr)

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