WO2012162968A1

WO2012162968A1 - Method, apparatus and system for controlling data transmission

Info

Publication number: WO2012162968A1
Application number: PCT/CN2011/079108
Authority: WO
Inventors: 张锦芳; 李波杰; 张伟; 彭程晖
Original assignee: 华为技术有限公司
Priority date: 2011-08-30
Filing date: 2011-08-30
Publication date: 2012-12-06
Also published as: CN103098510A; CN103098510B

Abstract

A method, an apparatus and a system for controlling data transmission are provided in the embodiments of the present invention, which relate to communication technical field. The method comprises: a device deploying a Transmission Control Protocol (TCP) agent determines whether a wireless network congestion state or a wireless channel congestion state is existed; if the wireless network congestion state or the wireless channel congestion state is existed, the data transmission with a wireless client will be suspended. By deploying the TCP agent in the wireless network, with the present invention, the wireless network and the channel information are monitored so that suspending the TCP data transmission with the wireless client can be achieved when the wireless network or channel is congested, the data transmission in a higher rate is transmitted when the wireless network congestion or channel congestion is removed, and thereby the problem that the battery power is consumed rapidly resulted by the online data transmission in a lower rate during a long time is avoided, and the beneficial effect of power saving is achieved.

Description

Method, device and system for controlling data transmission

The present invention relates to the field of communications technologies, and in particular, to a method, apparatus, and system for controlling data transmission. Background art

With the development of wireless communication technology, the future wireless network will develop into an end-to-end mobile internet with all-IP (Internet Protocol), and wireless and wired networks will also be seamlessly integrated. , thus providing users with free access anytime, anywhere.

However, in the actual application process, since the connection of the wireless network is very unstable compared to the wired network, the wireless connection is sometimes in a high throughput state, sometimes in a fading blocking state; Sexuality and the increasing demand for high-bandwidth services, the system is sometimes in a congested state, and sometimes in a relatively idle state. For the TCP (Transmission Control Protocol) traffic, when the wireless network is congested or the channel is in a fading state. When the transmission rate decreases exponentially, the receiving end is in a low-speed receiving state for a long time, which greatly wastes the terminal power. Summary of the invention

In order to solve the problem of waste of power when the terminal is in the low-speed receiving state, the embodiments of the present invention provide a method, device, and system for controlling data transmission. The technical solution is as follows:

In one aspect, a method of controlling data transmission is provided, the method comprising:

The device that deploys the Transmission Control Protocol TCP proxy determines whether there is a wireless network congestion state or a wireless channel congestion state;

If there is a wireless network congestion state or a wireless channel blocking state, data transmission with the wireless client is suspended. In one aspect, a device for deploying a Transmission Control Protocol TCP proxy is provided, the device comprising:

a determining module, configured to determine whether a wireless network congestion state or a wireless channel blocking state exists;

And a processing module, configured to suspend data transmission with the wireless client if the determination result of the determining module is yes. In one aspect, a method of controlling data transmission is provided, the method comprising:

The wireless client acquires a wireless network congestion state or a wireless channel blocking state sent by a device deploying the Transmission Control Protocol TCP; After obtaining the wireless network congestion state or the wireless channel congestion state, disconnecting the TCP connection with the device deploying the TCP proxy, and suspending data transmission with the device deploying the TCP proxy.

In one aspect, a wireless client is provided, where the wireless client includes an acquiring module, configured to acquire a wireless network congestion state or a wireless channel blocking state sent by a device that deploys a Transmission Control Protocol (TCP);

a disconnecting module, configured to: after the obtaining module acquires the wireless network congestion state or the wireless channel blocking state, disconnect the TCP connection with the device that deploys the TCP proxy, suspend the wireless client, and deploy the TCP Data transfer of the agent's device.

In one aspect, a system for controlling data transmission is provided, the system comprising: a device for deploying a Transmission Control Protocol TCP as described above and a wireless client as described above.

The wireless client acquires a wireless network congestion state or a wireless channel blocking state sent by a device deploying a Transmission Control Protocol (TCP);

After obtaining the wireless network congestion state or the wireless channel congestion state, notifying the wireless network congestion state or the wireless channel blocking state to an application running by the wireless client, so that the application automatically disconnects the A TCP connection between the wireless client and the device deploying the TCP proxy suspends data transmission between the wireless client and the device deploying the TCP proxy.

In one aspect, a wireless client is provided, where the wireless client includes: a first acquiring module, configured to acquire a wireless network congestion state or a wireless channel blocking state sent by a device that deploys a transmission control protocol TCP;

a first notification module, configured to notify the wireless client of the wireless network congestion state or the wireless channel congestion state after the first acquisition module acquires the wireless network congestion state or the wireless channel congestion state The application is configured to automatically disconnect the wireless client from the TCP connection of the device deploying the TCP proxy, and suspend data transmission between the wireless client and the device deploying the TCP proxy.

In another aspect, a system for controlling data transmission is provided, the system comprising: a device for deploying a Transmission Control Protocol TCP as described above and a wireless client as described above.

The technical solution provided by the embodiment of the present invention has the beneficial effects of: monitoring a wireless network and channel information by deploying a TCP proxy on a wireless network, thereby suspending wireless TCP data transmission when the wireless network or channel is congested, and avoiding long-term wireless client wireless connection. Data communication at a slow rate causes the battery to be quickly exhausted, thereby achieving the beneficial effects of power saving. DRAWINGS In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in view of the drawings.

1 is a flowchart of a method for controlling data transmission according to an embodiment of the present invention;

2 is a flowchart of a method for controlling data transmission according to an embodiment of the present invention;

3 is a schematic diagram of a device for deploying a TCP proxy according to an embodiment of the present invention;

4 is a schematic diagram of a device for deploying a TCP proxy according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of still another device for deploying a TCP proxy according to an embodiment of the present disclosure;

6 is a flowchart of a method for controlling data transmission according to an embodiment of the present invention;

7 is a schematic diagram of a wireless client according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of another wireless client according to an embodiment of the present invention; FIG.

FIG. 9 is a flowchart of a method for controlling data transmission according to an embodiment of the present invention;

FIG. 10 is a schematic diagram of a wireless client according to an embodiment of the present invention; FIG.

FIG. 11 is a schematic diagram of another wireless client according to an embodiment of the present invention. detailed description

The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

Referring to FIG. 1, an embodiment of the present invention provides a method for controlling data transmission, where the method includes:

101: Deploying a Transmission Control Protocol The device of the TCP proxy determines whether there is a wireless network congestion state or a wireless channel blocking state;

102: If there is a wireless network congestion state or a wireless channel blocking state, the data transmission with the wireless client is suspended.

In this embodiment, if the wireless base station provides a logical interface to the device that deploys the TCP proxy, the device that deploys the TCP proxy determines whether there is a wireless network congestion state or a wireless channel congestion state, including:

Obtaining, by the interface, load information of a locally served cell provided by the base station, and determining, according to the load information, whether the wireless network is in a congested state; or

And determining, by the interface, a channel signal to noise ratio of a user of the local service provided by the base station, and determining, according to the channel signal to noise ratio, whether the wireless channel is in a blocked state.

In this embodiment, if the wireless base station does not provide a logical interface to the device deploying the TCP proxy, the deployment The device of the TCP proxy determines whether there is a wireless network congestion state or a wireless channel congestion state, and includes: learning the cached data volume or capturing a retransmission timeout, and determining whether the wireless network is congested according to the buffered data volume or the captured retransmission timeout period. State; or

The wireless transmission rate or the packet loss rate is known, and whether the wireless channel is in a blocked state is determined according to the wireless transmission rate or the packet loss rate.

The data transmission of the suspension and the wireless client includes:

If the TCP proxy is an ETCP (Enhanced Transmit Control Protocol), send an ETCP pause message to the wireless client, suspend the ETCP connection with the wireless client, and suspend the wireless client. Data transmission; or

Periodically transmitting a keep-alive probe packet to the wireless client and suspending data transmission with the wireless client, the probe packet being used to maintain a TCP connection with the wireless client.

Optionally, in this embodiment, the suspending data transmission with the wireless client includes:

Notifying the wireless client of the wireless network congestion state or the wireless channel blocking state, causing the wireless client to disconnect the TCP connection with the device deploying the TCP proxy, and suspending data with the device deploying the TCP proxy transmission.

In this embodiment, the application platform is set on the wireless client, and the wireless network congestion state or the wireless channel blocking state is notified to the wireless client, and then includes:

And causing the application platform to acquire the wireless network congestion state or the wireless channel blocking state, and disconnect the TCP connection with the device that deploys the TCP proxy, and suspend data transmission with the device deploying the TCP proxy;

Or providing an API (Application Programming Interface) by the application platform, so that the application platform notifies the application of the wireless network congestion state or the wireless channel blocking state by using the API, where the application is automatically Suspend data transfer with the device deploying the TCP proxy.

Optionally, in this embodiment, if there is a wireless network congestion state or a wireless channel blocking state, the method further includes:

If the TCP proxy is ETCP, sending an ETCP pause message to the server, suspending an ETCP connection with the server, and suspending data transmission with the server; or

Receiving, by the preset receiving window, data sent by the server at a preset sending rate to maintain a TCP connection with the server; the preset receiving window is configured to control a preset sending rate of the server Or setting the receiving window of the data sent by the server to 0, causing the server to suspend the data transmission with the device deploying the TCP proxy, and monitoring the receiving window detection packet sent by the server, and Return ACK (Acknowledgement, correct answer) to maintain a TCP connection with the server; if the service is not detected The receiving window probe packet sent by the server end periodically sends a probe packet to the server end to maintain a TCP connection with the server end.

The method in this embodiment further includes:

When the device deploying the TCP proxy determines that there is no wireless network congestion state or a wireless channel congestion state, data transmission with the wireless client and the server is resumed.

The beneficial effects of the method embodiments provided by the present invention are: by deploying a TCP proxy in a wireless network, monitoring the wireless network and channel information, suspending wireless TCP data transmission when the wireless network or channel is congested, and the like, or eliminating wireless network congestion or channel blocking. After being eliminated, the data is transmitted at a higher data transmission rate, and the long-term online data communication at a slow rate is caused to cause the battery to be quickly exhausted, thereby achieving the beneficial effect of power saving. Referring to FIG. 2, an embodiment of the present invention provides a method for controlling data transmission, including:

201: Deploy the TCP proxy on the wireless network.

In this embodiment, the non-real time service is transmitted in a non-real time manner on the wireless network. Deploy the TCP proxy on the network side. Specifically, the network side device may be a radio base station, an RNC (Radio Network Controller), or a GW (Gateway), and is not limited in this embodiment.

In this embodiment, the TCP proxy may be deployed on the network side device, or the TCP proxy device may be separately set on the network side, and the network side device deploying the TCP proxy or the device respectively setting the TCP proxy is collectively referred to as the deployed TCP proxy. The device, by deploying a TCP proxy, splits the transmission link from the server to the wireless client into two segments, namely, the server to the device deploying the TCP proxy, and the device deploying the TCP proxy to the wireless client. Regardless of the manner in which the device deploying the TCP proxy is used, referring to FIG. 3, the specific device for deploying the TCP proxy includes: a monitoring module 100, a control module 200, and a TCP module 300. The monitoring module 100 is configured to provide an interface with the base station, obtain wireless network load information and/or wireless channel information from the base station, and simultaneously monitor TCP connection information. The control module 200 is configured to determine the TCP module according to the information input by the monitoring module. Parameters, such as a receiving window, sending a Keepalive detection packet, etc.; or generating a congestion or congestion cancellation indication message to the client; the TCP module 300, for completing a complete TCP protocol, providing a TCP connection information export interface and a control module 200 input interface At the same time, the TCP state is adjusted according to the information input by the control module 200.

202: The device deploying the TCP proxy determines whether there is a wireless network congestion state or a wireless channel congestion state; if yes, step 203 is performed, otherwise the wireless client data transmission is continued.

In this embodiment, the wireless network is congested, which is characterized by extremely low throughput of the network system; the wireless channel is blocked, and the channel loss rate is high, and the transmission rate is extremely low.

In this embodiment, if the wireless base station provides a logical interface to the device deploying the TCP proxy, the TCP proxy is deployed. The device determines whether there is a wireless network congestion state or a wireless channel blocking state, including:

And the device that deploys the TCP proxy learns, by using the interface, load information of a cell that is locally served by the base station, and determines, according to the load information, whether the wireless network is in a congested state;

Or obtaining, by using the interface, a channel signal to noise ratio of a user of the local service provided by the base station, and determining, according to the channel signal to noise ratio, whether the wireless channel is in a blocked state.

In this embodiment, the logical interface provided by the wireless base station mainly refers to a logical interface customized for transmitting control information, and the role of the logical interface is: for all devices deploying the TCP proxy, whether deployed separately or deployed in the existing On the network device, the device deploying the TCP proxy can learn the network information of the base station or the channel information of a certain user through the logical interface, and can also issue an indication message such as congestion/congestion cancellation, and the logical interface completes the transmission of the additional information. The network related information is obtained from different sources in different systems. For example, in the LTE system, this information can be obtained from the eNB, that is, the base station; in the 3G system, this information can be obtained from the NB (Node B) or the RNC. User channel related information can be obtained from the base station. Specifically, the interface between the device that deploys the TCP proxy and the device on the network side is a standard defined interface. For example, in the LTE system, between the GW and the base station, the interface is S 1-U; in the 3G system, in the GW and Between the RNCs, this interface is Iu; between the RNC and the base station, this interface is Iu_b; in other systems, the same depends on the location of the device deployment, and will not be described in this embodiment.

The load information of the cell may be obtained by using the output power of the base station and/or the occupation of the time-frequency resource. If the TCP proxy determines that the resource usage of the base station exceeds the resource allocated by the cell, the wireless network congestion state is determined. . Similarly, if the device deploying the TCP proxy determines that the channel SNR of the user served by the radio base station is lower than a preset value, it is determined that the radio channel blocking state has occurred.

Further, in this embodiment, if the wireless base station does not provide a logical interface to the device that deploys the TCP proxy, the device that deploys the TCP proxy determines whether there is a wireless network congestion state or a wireless channel blocking state, including: The device that deploys the TCP proxy learns the amount of data buffered or captures the retransmission timeout, and determines whether the wireless network is in a congested state according to the buffered data volume or the captured retransmission timeout period;

Or knowing the wireless transmission rate or the packet loss rate, and determining whether the wireless channel is in a blocked state according to the wireless transmission rate or the packet loss rate.

The method for determining the downlink packet loss by the device deploying the TCP proxy may be that a duplicate ACK or duplicate data is received; the method for the TCP proxy to determine the uplink packet loss may be detecting a discontinuous TCP sequence number or a retransmission timeout, and the specific TCP proxy. The method for determining the packet loss in the uplink or the downlink belongs to the prior art, and is not described in this embodiment. In this embodiment, when the amount of data buffered reaches a preset amount, or when the retransmitted data exceeds a predetermined time limit, it is determined that the wireless network is in a congestion state; or when the wireless transmission rate is less than a predetermined rate, or is lost. When the packet rate is greater than a predetermined threshold, it is determined that the wireless channel is in a blocked state. Wherein, the number of presets mentioned above, a preset time limit, a predetermined rate, or a predetermined threshold The value may be set according to the network status and experience, and is not specifically limited in this embodiment.

203: The device deploying the TCP proxy suspends data transmission with the wireless client.

In this embodiment, when the wireless network congestion or the wireless channel is blocked, the data processing manner of the device deploying the TCP proxy to the wireless client includes:

1) The TCP protocol configured on the network side and the wireless client is an enhanced ETCP protocol, which is sent to the wireless client.

ETCP Pause message, keeps the wireless TCP connection, but suspends data transmission with the wireless client.

In this embodiment, the TCP Pause/Resume operation is implemented in the TCP protocol, and can be deployed in the current wireless network, and is named ETCP, and the network side enhances the ETCP proxy to be transparent to the application layer. When the ETCP proxy detects the wireless network or the channel is congested, the ETCP Pause is sent to the wireless client, so that the wireless ETCP connection is suspended, the wireless end data transmission is suspended, and the ETCP state and the context information are maintained by the ETCPs at both ends of the network side and the wireless client. When wireless network or channel congestion cancellation is detected, ETCP continues ETCP data transmission with the maintained ETCP status and context information.

2) Or set the TCP Keepalive Timer (TCP Keepalive t imer), which is configurable, generally not less than 2 hours, to maintain the wireless TCP connection by periodically sending probe packets to the wireless client.

In this embodiment, the device deploying the TCP proxy suspends the wireless terminal data transmission. If the wireless network congestion or the wireless channel congestion has not been eliminated within 2 hours, the device deploying the TCP proxy sends the Keepalive detection packet to the wireless client, and the wireless client The end feedback ACK responds to the probe packet. The device deploying the TCP proxy knows that the wireless client is still active by receiving an ACK feedback and resets the survival timer for the next 2 hours. A device deploying a TCP proxy maintains a wireless TCP connection by periodically sending a Keepalive probe packet to the wireless client until the wireless connection resumes a large bandwidth transmission. If the wireless network congestion or wireless channel congestion is removed before the 2 hour expiration, the survival timer is reset for the next 2 hours and the data transmission continues.

In this embodiment, in step 203, after the device deploying the TCP proxy learns the wireless network congestion state or the wireless channel congestion state, the wireless network congestion state or the wireless channel congestion state is notified to the wireless client, so that the wireless The client disconnects from the device deploying the TCP proxy and suspends data transfer with the device deploying the TCP proxy. The device deploying the TCP proxy notifies the wireless client of the wireless network or the wireless channel status, and the wireless client disconnects the TCP connection, including:

1) The wireless client is equipped with a unified application platform to obtain the wireless network or wireless channel status. The application platform simultaneously implements the functions of monitoring, maintaining, and controlling the application. Specifically, the application context and the interrupt are recorded when the wireless network or the channel is congested. Point information and disconnect the TCP connection, the application platform can close or maintain the application; when obtaining the network congestion elimination indication delivered by the TCP proxy, re-initiate the request to establish a TCP connection according to the context and the breakpoint information, and utilize the application provided API pulls up the app or continues to apply;

2) or the application platform can only implement the monitoring function, and provide an API interface for querying or according to the application. The subscription notifies the application of the current wireless network or channel congestion status, and the application itself actively disconnects or resumes the TCP connection and records the context and breakpoint status. The application refers to some programs run by the wireless client, including FTP (Fi le Transfer Protocol), HTTP Progressive download (Hypertext Transfer Protocol progressive download), P2P (Peer-to- Peer, peer) download, etc.

In this embodiment, when the device deploying the TCP proxy detects the wireless network congestion or the wireless channel is blocked, the data transmission with the wireless client is terminated, thereby preventing the wireless client from performing data communication at a slow rate for a long time online, causing rapid battery consumption. End of the problem, optionally, the device deploying the TCP proxy may not process the server, the server continues the data transmission, and the device deploying the TCP proxy buffers the data transmitted by the server. When the wireless network is congested or the wireless channel is blocked, Send the cached data to the wireless client. Optionally, in this embodiment, when the device deploying the TCP proxy processes the wireless client, the server is also processed. The server may be located in the wired network or in the wireless network. In this embodiment, a scenario of a wired server and a wireless client is used, but is not limited to a wired server. At the same time, the processing method of the wireless side and the processing method of the server side in this embodiment can be freely combined and implemented. Specifically, when detecting the congestion of the wireless network or the blocking of the wireless channel, the data processing manner of the device deploying the TCP proxy to the network side to the server side includes:

1) Configure the ETCP protocol throughout the network to maintain the wired side ETCP connection, but suspend data transmission with the server;

In this embodiment, ETCP is also deployed in the wired network, that is, ETCP is configured at the network side device, the wireless client, and the server, and the ETCP agent detects the wireless network congestion or the wireless channel blocking, and processes the wireless client. Similarly, the ETCP Pause message is sent to the server to suspend the wired ETCP connection, suspend the transmission of the wired data, and the ETCP state and context information are maintained by the server and the network side ETCP. When wireless network or channel congestion cancellation is detected, ETCP continues ETCP data transmission with the maintained ETCP status and context information.

2) receiving, by using a preset receiving window, data sent by the server at a preset sending rate to maintain a TCP connection with the server end; the preset receiving window is used to control the server-side preset In the embodiment, the preset receiving window is a smaller receiving window set by the device deploying the TCP proxy, and the TCP proxy controls the sending rate of the server and buffers the received data by reducing the wired side TCP receiving window. To keep the wired TCP connection.

3) Or by setting the receiving window to 0 to stop the data transmission on the server side, the TCP proxy monitors the receiving window detection packet sent by the server and returns an ACK to maintain the wired TCP connection; if the TCP proxy does not detect the receiving from the server The window probe packet is periodically sent by the device deploying the TCP proxy to the server to maintain the wired TCP connection. In this embodiment, the TCP proxy pauses the data transmission by setting the receiving window to 0. The TCP proxy monitors the receiving window detection packet sent by the server and returns an ACK to maintain the wired TCP connection; if the TCP proxy does not detect the server The receiving window detection packet is sent, and the device deploying the TCP proxy periodically sends a keepalive detection packet to the server to maintain the wired TCP connection through the set survival timer. When the wireless network or channel congestion is eliminated, the device deploying the TCP proxy sends an updated receiving window to the server to activate the server to continue data delivery.

204: Resume data transmission with the wireless client and the server when the device deploying the TCP proxy determines that there is no wireless network congestion state or a wireless channel congestion state.

In this embodiment, when detecting the wireless network or channel congestion cancellation, the device deploying the TCP proxy resumes the TCP connection with the wireless client and the server, and continues data transmission.

In this embodiment, when detecting the wireless network or channel congestion cancellation, for the wireless client:

1) When the wireless client configures a unified application platform, when detecting the wireless network or channel congestion cancellation, sending a wireless network or channel congestion cancellation indication to the wireless client, this indication is a customized indication message for deployment The TCP proxy device resumes the TCP connection with the wireless client and continues the data transmission;

2) When the deployed TCP is ETCP, the device deploying the TCP proxy sends ETCP resume to the wireless client, restores the ETCP connection, and continues data transmission;

3) If the wireless client and the device deploying the TCP proxy maintain the TCP connection through the Keepalive probe packet, the specific information indication is not required after detecting the wireless network or channel congestion cancellation, and the TCP proxy can directly send data to the client to continue. Transmission

In this embodiment, when the wireless network or channel congestion is detected, the server side:

1) When deploying TCP to ETCP, the device deploying the TCP proxy sends ETCP resume to the server, recovering

ETCP connection, continue data transmission;

2) When the device deploying the TCP proxy keeps the wired side TCP connection and buffers the received data by setting a smaller receiving window; or the device deploying the TCP proxy stops the data transmission by setting the receiving window to 0, the TCP proxy monitors the server side. The receiving window detects the packet and returns an ACK to keep the wired TCP connection. If the TCP proxy does not detect the receiving window probe packet sent by the server, the TCP proxy sets the surviving timer, and periodically sends the probe packet to the server to maintain the wired TCP connection. . In the above case, when the wireless network or channel congestion is eliminated, the device deploying the TCP proxy sends an updated receiving window to the server to activate the server to continue data delivery.

The beneficial effects of the method embodiments provided by the present invention are: by deploying a TCP proxy in a wireless network, monitoring the wireless network and channel information, suspending wireless TCP data transmission when the wireless network or channel is congested, and the like, or eliminating wireless network congestion or channel blocking. After being eliminated, the data is transmitted at a higher data transmission rate, and the long-term online data communication at a slow rate is caused to cause the battery to be quickly exhausted, thereby achieving the beneficial effect of power saving. Referring to FIG. 4, an embodiment of the present invention provides a device for deploying a transmission control protocol TCP proxy, where the device includes: a determining module 301 and a processing module 302.

The determining module 301 is configured to determine whether there is a wireless network congestion state or a wireless channel blocking state. The processing module 302 is configured to suspend the deployment of the TCP proxy device and the wireless client if the determining result of the determining module is yes. data transmission.

Referring to FIG. 5, in this embodiment, the determining module 301 includes:

The first determining unit 301a is configured to: if the wireless base station provides a logical interface to the device that deploys the TCP proxy, obtain, by using the logical interface, load information of the locally served cell provided by the base station, and determine, according to the load information, whether the wireless network is In a state of congestion; or

a second determining unit 301b, configured to: if the wireless base station provides a logical interface to the device that deploys the TCP proxy, obtain, by using the interface, a channel signal to noise ratio of a user of the local service provided by the base station, according to the channel signal to noise It is more than judging whether the wireless channel is in a blocked state.

Optionally, in this embodiment, referring to FIG. 5, the determining module 301 includes:

The third determining unit 301c is configured to: if the wireless base station does not provide a logical interface to the device that deploys the TCP proxy, obtain the buffered data volume or the capture retransmission timeout, and determine according to the cached data volume or the captured retransmission timeout. Whether the wireless network is in a congested state; or

The fourth determining unit 301d is configured to: if the wireless base station does not provide a logical interface to the device that deploys the TCP proxy, obtain a wireless transmission rate or a packet loss rate, and determine, according to the wireless transmission rate or the packet loss rate, whether the wireless channel is blocked. status.

Referring to FIG. 5, in this embodiment, the processing module 302 includes:

The first sending unit 302a is configured to: if the TCP proxy is an enhanced transmission control protocol ETCP, send an ETCP suspension message to the wireless client, suspend an ETCP connection with the wireless client, and suspend the wireless client Data transmission; or

The second sending unit 302b is configured to periodically send a keep-alive probe packet to the wireless client, and suspend data transmission with the wireless client, where the probe packet is used to maintain a TCP connection with the wireless client.

Referring to FIG. 5, in this embodiment, the processing module 302 further includes:

The third sending unit 302c is configured to: if the determining result of the determining module is yes, notify the wireless client of the wireless network congestion state or the wireless channel blocking state, and disconnect the wireless client A TCP connection of a device deploying a TCP proxy suspends data transfer with the device deploying the TCP proxy.

Referring to FIG. 5, in this embodiment, optionally, the processing module 302 further includes: The fourth sending unit 302d is configured to: if the judgment result of the determining module is yes, and if the TCP proxy is ETCP, send an ETCP pause message to the server end, suspend the ETCP connection with the server end, and suspend Transmission of data with the server side; or

The fifth sending unit 302e is configured to: if the determining result of the determining module is yes, receive data sent by the server at a preset sending rate through a preset receiving window, thereby maintaining a TCP connection with the server end. The preset receiving window is used to control a preset sending rate of the server; or

a sixth sending unit 302f, configured to: if the determination result of the determining module is yes, set a receiving window for receiving data sent by the server to 0, and suspend the server end with the device that deploys the TCP proxy Data transmission, monitoring the receiving window detection packet sent by the server, and returning a correct response ACK to maintain a TCP connection with the server; if the receiving window detection packet sent by the server is not detected, periodically reporting to the The server sends a probe packet to maintain a TCP connection with the server.

Referring to Figure 5, the device further includes:

The sending module 303 is configured to: when the device that deploys the TCP proxy determines that there is no wireless network congestion state or a wireless channel congestion state, send the wireless network congestion state or the wireless channel congestion state to the wireless client and the server. The instruction is cancelled, and the wireless client and the server end continue to transmit data.

The beneficial effects of the device embodiments provided by the present invention are: by deploying a TCP proxy in a wireless network, monitoring the wireless network and channel information, suspending wireless TCP data transmission when the wireless network or channel is congested, and the like, or eliminating wireless network congestion or channel blocking. After being eliminated, the data is transmitted at a higher data transmission rate, and the long-term online data communication at a slow rate is caused to cause the battery to be quickly exhausted, thereby achieving the beneficial effect of power saving. Referring to FIG. 6, an embodiment of the present invention provides a method for controlling data transmission, where the method includes:

401: The wireless client acquires a wireless network congestion state or a wireless channel blocking state sent by a device that deploys a transmission control protocol TCP.

402: After obtaining the wireless network congestion state or the wireless channel blocking state, disconnect the TCP connection with the device deploying the TCP proxy, and suspend data transmission with the device deploying the TCP proxy.

The wireless client obtains a wireless network congestion state or a wireless channel congestion state sent by a device that deploys the Transmission Control Protocol (TCP), and then includes: recording an application context and a breakpoint information.

In this embodiment, the method further includes:

After receiving the wireless network congestion status or the wireless channel blocking status cancellation indication sent by the device deploying the TCP proxy, restoring the device with the deployed TCP proxy according to the recorded context and breakpoint information of the application TCP connection. The beneficial effects of the method embodiments provided by the present invention are: monitoring the wireless network and channel information by deploying a TCP proxy in the wireless network, so that when the wireless network or channel is congested, the wireless client disconnects the TCP connection with the device deploying the TCP proxy. Suspension of data transmission, such as wireless network congestion elimination or channel congestion elimination, and then transmitted at a higher data transmission rate, avoiding the wireless client to communicate with the data at a slow rate for a long time, causing the battery to be quickly exhausted, thereby achieving power saving. Beneficial effect. Referring to FIG. 7, an embodiment of the present invention provides a wireless client, where the wireless client includes: an obtaining module 501 and a disconnecting module 502.

The obtaining module 501 is configured to obtain a wireless network congestion state or a wireless channel blocking state sent by a device that deploys the Transmission Control Protocol (TCP).

The disconnecting module 502 is configured to: after the acquiring module acquires the wireless network congestion state or the wireless channel blocking state, disconnect the TCP connection with the device deploying the TCP proxy, suspend the wireless client and the deployment Data transfer of TCP proxy devices.

Referring to FIG. 8, in the embodiment of the present invention, the wireless client further includes:

The recording module 503 is configured to record the application context and the breakpoint information after the acquiring module acquires the wireless network congestion state or the wireless channel blocking state.

Referring to Figure 8, the wireless client also includes:

a recovery module 504, configured to: according to the context and breakpoint information of the application recorded by the recording module, after receiving the wireless network congestion state or the wireless channel blocking state cancellation indication sent by the device deploying the TCP proxy Recovering the TCP connection between the wireless client and the device deploying the TCP proxy.

The acquisition module, the disconnection module, the recording module, and the recovery module in the specific embodiment can be implemented by using the application platform configured in the foregoing embodiment.

The embodiment of the present invention provides a system for controlling data transmission, where the system includes: a device for deploying a transmission control protocol TCP as described above, and a wireless client provided by this embodiment.

The beneficial effects of the device embodiments provided by the present invention are: monitoring the wireless network and channel information by deploying a TCP proxy in the wireless network, so that when the wireless network or channel is congested, the wireless client disconnects the TCP connection with the device deploying the TCP proxy. Suspension of data transmission, such as wireless network congestion elimination or channel congestion elimination, and then transmitted at a higher data transmission rate, avoiding the wireless client to communicate with the data at a slow rate for a long time, causing the battery to be quickly exhausted, thereby achieving power saving. Beneficial effect. Referring to FIG. 9, a method for controlling data transmission according to an embodiment of the present invention includes: 601: The wireless client acquires a wireless network congestion state or a wireless channel blocking state sent by a device that deploys a transmission control protocol TCP.

602: After obtaining the wireless network congestion state or the wireless channel blocking state, notifying the wireless network congestion state or the wireless channel blocking state to an application running by the wireless client, so that the application is automatically disconnected. The TCP connection between the wireless client and the device deploying the TCP proxy suspends data transmission between the wireless client and the device deploying the TCP proxy.

Further, in this embodiment, the method further includes:

The wireless client acquires a wireless network congestion status or a wireless channel blocking status cancellation indication sent by the device deploying the TCP;

After obtaining the wireless network congestion state or the wireless channel blocking state cancellation indication, notifying the wireless network congestion state or the wireless channel blocking state cancellation indication to the application, so that the application actively recovers the wireless client Ending a TCP connection with the device deploying the TCP proxy, and restoring data transmission between the wireless client and the device deploying the TCP proxy.

The beneficial effects of the method embodiments provided by the present invention are: monitoring the wireless network and channel information by deploying a TCP proxy in the wireless network, so that when the wireless network or channel is congested, the wireless client disconnects the TCP connection with the device deploying the TCP proxy. Suspension of data transmission, such as wireless network congestion elimination or channel congestion elimination, and then transmitted at a higher data transmission rate, avoiding the wireless client to communicate with the data at a slow rate for a long time, causing the battery to be quickly exhausted, thereby achieving power saving. Beneficial effect. Referring to FIG. 10, an embodiment of the present invention provides a wireless client, where the wireless client includes: an obtaining module 701 and a notification module 702.

The first obtaining module 701 is configured to obtain a wireless network congestion state sent by a device that deploys the Transmission Control Protocol (TCP) or a wireless channel congestion state.

The first notification module 702 is configured to notify the wireless client of the wireless network congestion state or the wireless channel congestion state after the first acquisition mode 701 acquires the wireless network congestion state or the wireless channel congestion state. The running application causes the application to automatically suspend the TCP connection between the wireless client and the device deploying the TCP proxy, and suspend data transmission between the wireless client and the device deploying the TCP proxy.

Referring to FIG. 11, the wireless client provided in this embodiment further includes:

a second acquisition mode 703, configured to acquire a wireless network congestion state or a wireless channel blocking state cancellation indication sent by the device deploying the TCP;

The second notification module 704 is configured to obtain, by the second obtaining module 703, the wireless network congestion state or none After the line channel blocking state is removed, the wireless network congestion state or the wireless channel blocking state cancellation indication is notified to the application, so that the application actively restores the TCP connection between the wireless client and the device deploying the TCP proxy, and restores the Data transmission between the wireless client and the device deploying the TCP proxy.

The obtaining module and the notification module in the specific embodiment can be implemented by using the application platform configured in the foregoing embodiment, and the application platform provides an API interface for the application.

The beneficial effects of the device embodiments provided by the present invention are: monitoring the wireless network and channel information by deploying a TCP proxy in the wireless network, so that when the wireless network or channel is congested, the wireless client disconnects the TCP connection with the device deploying the TCP proxy. Suspension of data transmission, such as wireless network congestion elimination or channel congestion elimination, and then transmitted at a higher data transmission rate, avoiding the wireless client to communicate with the data at a slow rate for a long time, causing the battery to be quickly exhausted, thereby achieving power saving. Beneficial effect. The device and the system provided in this embodiment may be the same as the method embodiment, and the specific implementation process is described in detail in the method embodiment, and details are not described herein again. A person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium. The storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Claims

Claim

A method for controlling data transmission, the method comprising:

The device that deploys the Transmission Control Protocol TCP proxy determines whether there is a wireless network congestion state or a wireless channel congestion. If there is a wireless network congestion state or a wireless channel congestion state, the data transmission with the wireless client is suspended.

2. The method according to claim 1, wherein if the wireless base station provides a logical interface to the device deploying the TCP proxy, the device deploying the TCP proxy determines whether there is a wireless network congestion state or a wireless channel congestion. Status, including:

Obtaining, by the logical interface, load information of a locally served cell provided by the base station, and determining, according to the load information, whether the wireless network is in a congestion state; or

And determining, by the logical interface, a channel signal to noise ratio of a user of the local service provided by the base station, and determining, according to the channel signal to noise ratio, whether the wireless channel is in a blocked state.

3. The method according to claim 1, wherein if the wireless base station does not provide a logical interface to the device deploying the TCP proxy, the device deploying the TCP proxy determines whether there is a wireless network congestion state or a wireless channel. Blocking status, including:

Obtaining the amount of cached data or capturing a retransmission timeout, and determining whether the wireless network is in a congested state according to the buffered data amount or the captured retransmission timeout; or

The method according to any one of claims 1-3, wherein the suspending data transmission with the wireless client comprises:

If the TCP proxy is an enhanced transport control protocol ETCP, sending an ETCP pause message to the wireless client, suspending an ETCP connection with the wireless client, and suspending data transmission with the wireless client; or

The method according to any one of claims 1-3, wherein the suspending data transmission with the wireless client comprises: notifying the wireless network congestion status or the wireless channel blocking status to the wireless client And causing the wireless client to disconnect the TCP connection with the device deploying the TCP proxy, and suspending data transmission with the device deploying the TCP proxy.

The method according to claim 5, wherein before the notifying the wireless network congestion state or the wireless channel blocking state to the wireless client, the method further includes: setting an application platform on the wireless client ;

Transmitting the wireless network congestion state or the wireless channel blocking state to the wireless client, causing the wireless client to disconnect the TCP connection with the device deploying the TCP proxy, suspending the deployment of the TCP Data transfer of the agent's device, including:

Notifying the wireless client of the wireless network congestion state or the wireless channel blocking state, causing the application platform to acquire the wireless network congestion state or the wireless channel blocking state, and disconnecting from the deployed TCP proxy a TCP connection of the device, suspending data transmission with the device deploying the TCP proxy; or

Notifying the wireless client of the wireless network congestion state or the wireless channel blocking state, where the application platform provides an application programming interface API, so that the application platform notifies the wireless client to run the application through the API The wireless network congestion state or the wireless channel blocking state causes the application to automatically suspend data transmission with the device deploying the TCP proxy.

The method according to any one of claims 1-6, wherein, if there is a wireless network congestion state or a wireless channel congestion state, the method further includes:

Receiving, by the preset receiving window, data sent by the server at a preset sending rate to maintain a TCP connection with the server; the preset receiving window is configured to control a preset sending rate of the server ; or

Setting the receiving window of the data sent by the server to 0, causing the server to suspend data transmission with the device deploying the TCP proxy, and monitoring the receiving window detection packet sent by the server, and returning correctly The response ACK maintains a TCP connection with the server; if the receiving window probe packet sent by the server is not detected, the probe packet is periodically sent to the server to maintain a TCP connection with the server.

The method according to any one of claims 1 to 7, wherein the method further comprises: When the device deploying the TCP proxy determines that there is no wireless network congestion state or a wireless channel congestion state, sending the wireless network congestion state or the wireless channel blocking state cancellation indication to the wireless client and the server end, so that The wireless client and the server end continue to transmit data.

A device for deploying a transmission control protocol TCP proxy, wherein the device includes: a determining module, configured to determine whether a wireless network congestion state or a wireless channel congestion state exists;

And a processing module, configured to suspend data transmission between the device deploying the TCP proxy and the wireless client if the determination result of the determining module is yes.

The device according to claim 9, wherein the determining module comprises:

a first determining unit, configured to: if a wireless base station provides a logical interface to the device that deploys the TCP proxy, obtain, by using the logical interface, load information of a locally served cell provided by the base station, and determine a wireless network according to the load information. Whether it is in a state of congestion; or

a second determining unit, configured to: if the wireless base station provides a logical interface to the device that deploys the TCP proxy, obtain, by using the interface, a channel signal to noise ratio of a user that is locally served by the base station, according to the channel signal to noise ratio Determine if the wireless channel is in a blocked state.

The device according to claim 9, wherein the determining module comprises:

a third determining unit, configured to: if the wireless base station does not provide a logical interface to the device that deploys the TCP proxy, obtain a buffered data volume or a capture retransmission timeout, and determine the wireless according to the cached data volume or the captured retransmission timeout. Whether the network is in a congested state; or

a fourth determining unit, configured to: if the wireless base station does not provide a logical interface to the device that deploys the TCP proxy, obtain a wireless transmission rate or a packet loss rate, and determine, according to the wireless transmission rate or the packet loss rate, whether the wireless channel is in a blocked state. .

The device according to any one of claims 9 to 11, wherein the processing module comprises: a first sending unit, configured to: if the TCP proxy is an enhanced transmission control protocol ETCP, The wireless client sends an ETCP pause message, suspends an ETCP connection with the wireless client, and suspends data transmission with the wireless client; or

And a second sending unit, configured to periodically send a keep-alive probe packet to the wireless client, and suspend data transmission with the wireless client, where the probe packet is used to maintain a TCP connection with the wireless client.

The device according to any one of claims 9 to 11, wherein the processing module further includes: a third sending unit, configured to: if the determining result of the determining module is yes, the wireless The network congestion state or the wireless channel blocking state is notified to the wireless client, causing the wireless client to disconnect the TCP connection with the device deploying the TCP proxy, and suspending data transmission with the device deploying the TCP proxy.

The device according to any one of claims 9 to 13, wherein the processing module further comprises: a fourth sending unit, configured to: if the judgment result of the determining module is yes, and if the TCP If the proxy is ETCP, send an ETCP pause message to the server, suspend the ETCP connection with the server, and suspend data transmission with the server; or

a fifth sending unit, configured to: if the determining result of the determining module is yes, receive data sent by the server at a preset sending rate through a preset receiving window, thereby maintaining a TCP connection with the server end; The preset receiving window is used to control a preset sending rate of the server; or

a sixth sending unit, configured to: if the determination result of the determining module is yes, set a receiving window of the data sent by the server to 0, and cause the server to pause data of the device that deploys the TCP proxy Transmitting, monitoring the receiving window detection packet sent by the server, and returning a correct response ACK to maintain a TCP connection with the server; if the receiving window detection packet sent by the server is not detected, periodically reporting to the server The probe sends a probe packet to maintain a TCP connection with the server.

The device according to any one of claims 9 to 14, wherein the device further comprises: a sending module, configured to: when the device deploying the TCP proxy determines that there is no wireless network congestion state or wireless When the channel is blocked, the wireless network congestion state or the wireless channel blocking state cancellation indication is sent to the wireless client and the server, so that the wireless client and the server end continue to transmit data.

16. A method of controlling data transmission, the method comprising:

After obtaining the wireless network congestion state or the wireless channel congestion state, disconnecting the TCP connection with the device deploying the TCP proxy, and suspending data transmission with the device deploying the TCP proxy.

The method according to claim 16, wherein the wireless client acquires a wireless network congestion state or a wireless channel congestion state sent by a device that deploys the Transmission Control Protocol (TCP), and then includes:

Record application context and breakpoint information.

The method according to claim 17, wherein the method further comprises:

After receiving the wireless network congestion status or the wireless channel blocking status cancellation indication sent by the device deploying the TCP proxy, restoring the device with the deployed TCP proxy according to the recorded context and breakpoint information of the application TCP connection.

A wireless client, wherein the wireless client comprises:

An obtaining module, configured to obtain a wireless network congestion state or a wireless channel blocking state sent by a device that deploys a transmission control protocol TCP;

a disconnecting module, configured to: after the obtaining module acquires the wireless network congestion state or the wireless channel blocking state, disconnect the TCP connection with the device deploying the TCP proxy, suspend the wireless client, and deploy the TCP Data transfer of the agent's device.

The wireless client according to claim 19, wherein the wireless client further comprises: a recording module, configured to: after the acquiring module acquires the wireless network congestion state or the wireless channel blocking state, , record application context and breakpoint information.

The wireless client according to claim 20, wherein the wireless client further comprises: a recovery module, configured to receive the wireless network congestion status sent by the device deploying the TCP proxy, or After the wireless channel blocking state is removed, the TCP connection of the wireless client and the device deploying the TCP proxy is restored according to the context and breakpoint information of the application recorded by the recording module.

22. A method of controlling data transmission, the method comprising:

After obtaining the wireless network congestion state or the wireless channel congestion state, notifying the wireless network congestion state or the wireless channel blocking state to an application running by the wireless client, so that the application automatically disconnects the Wireless customer Ending a TCP connection with the device deploying the TCP proxy, suspending data transmission between the wireless client and the device deploying the TCP proxy.

The method according to claim 22, wherein the method further comprises:

Obtaining, by the wireless client, a wireless network congestion status or a wireless channel blocking status cancellation indication sent by the device deploying TCP;

24. A wireless client, wherein the wireless client comprises:

a first acquiring module, configured to acquire a wireless network congestion state or a wireless channel blocking state sent by a device that deploys a transmission control protocol TCP;

a first notification module, configured to notify the wireless client of the wireless network congestion state or the wireless channel congestion state after the first acquisition module acquires the wireless network congestion state or the wireless channel congestion state And causing the application to automatically suspend the wireless connection between the wireless client and the device deploying the TCP proxy, and suspending data transmission between the wireless client and the device deploying the TCP proxy.

The wireless client according to claim 24, wherein the wireless client further comprises: a second obtaining module, configured to acquire a wireless network congestion state or a wireless channel blocking sent by the device deploying the TCP State cancellation indication;

a second notification module, configured to notify the wireless network congestion state or the wireless channel blocking state cancellation indication to the second acquisition module after acquiring the wireless network congestion state or the wireless channel blocking state cancellation indication The application enables the application to actively restore the TCP connection between the wireless client and the device deploying the TCP proxy, and restore data transmission between the wireless client and the device deploying the TCP proxy.

A system for controlling data transmission, the system comprising: the apparatus for deploying a transmission control protocol TCP according to any one of claims 9-15, and the apparatus of any one of claims 19-21 Wireless client.

A system for controlling data transmission, the system comprising: the apparatus for deploying a transmission control protocol TCP according to any one of claims 9-15, and the apparatus of any one of claims 24-25 Wireless client.