CN102625398A - Method and device for recovering data services of high-level applications when multi-channel data connections are switched - Google Patents

Abstract

The present invention provides a method suitable for portable wireless access terminals to automatically restore data services of high-level applications when multi-channel data connections are switched. First, a connection request queue is established to cache each high-level application currently in an active state The connection request sent by the data service; then, after the data service is completed, delete the connection request corresponding to the data service from the connection request queue; when the switching of the data connection channel occurs, send it on the switched data connection channel The connection request currently cached in the connection request queue re-establishes the connection of the corresponding data service. The invention also provides a portable wireless access terminal. The application of the present invention can automatically rebuild the connection of the data service of the high-level application and automatically restore the data service of the high-level application when the multi-channel data connection is switched.

Description

Method and device for recovering data services of high-level applications when multi-channel data connections are switched

technical field

The present invention relates to wireless communication technology, in particular to a method and equipment for recovering data services of high-level applications when multi-channel data connections are switched, which are suitable for portable wireless access terminals.

Background technique

With the development of the mobile Internet, more and more ordinary users begin to use portable wireless access terminals such as smartphones, tablet computers, and notebook computers to access the wireless Internet anytime, anywhere. Existing portable wireless access terminals usually have the capability of multi-channel data connection. The wireless connection methods for these terminal devices to access the Internet include WIFI, and wireless data connections (GPRS, UMTS, CDMA1x, EVDO, FDD-LTE) provided by communication operators. /TDD-LTE, WiMax and other wireless access modes). All these access methods constitute the multi-channel data connection working mode of the terminal equipment. Some of the data connections of these different channels are completely uncorrelated. For example, WiFi wireless access and 2G/3G wireless access provided by operators, these two different data connections will provide devices with completely different IP addresses.

Due to the mobile characteristics of the portable wireless access terminal equipment, the terminal equipment often encounters the situation of multi-channel data connection switching. In this case, the data service of the high-level application running on the device connection (such as an application using a wireless data connection on a smart phone, and a wireless Internet on a tablet computer) will be affected due to the switching of the data connection channel.

For example: when the wireless access terminal switches from WiFi wireless access to 2G/3G wireless access mode, the conversion of the underlying IP address will affect the normal operation of data services of high-level applications, resulting in poor user experience. The user must manually restart the high-level application on the terminal, or manually refresh the current application, in order to restore normal high-level data services.

Contents of the invention

The present invention provides a method and a portable wireless access terminal for recovering data services of high-level applications when multi-channel data connections are switched. The high-level application in the network reestablishes the connection, so as to ensure the normal operation of the data service of the high-level application.

The present invention provides a method for recovering data services of high-level applications when multi-channel data connections are switched, which is suitable for portable wireless access terminals, including:

Establish a connection request queue, which is used to cache the connection requests sent by the data services of each currently active high-level application;

After the data service is completed, delete the connection request corresponding to the data service from the connection request queue;

When switching of the data connection channel occurs, the connection request currently buffered in the connection request queue is sent on the switched data connection channel, and the connection of the corresponding data service is reestablished.

Preferably, the switching of the data connection channel includes: when a new data connection mode is available, and the priority of the new data connection mode is higher than that of the existing data connection mode, the currently cached data in the connection request queue The connection of the data service corresponding to the connection request is actively closed, and a new data connection channel is established in the new data connection mode.

Preferably, a new data connection switching adaptation layer is added between the high-level application of the portable wireless access terminal and the bottom data connection control layer;

Establishing and maintaining the connection request queue by the data connection switching adaptation layer;

When the underlying data connection control layer finds that a new data connection mode is available, and the priority of the new data connection mode is higher than that of the existing data connection mode, report to the data connection switching adaptation layer;

According to the report of the underlying data connection control layer, the data connection switching adaptation layer actively closes the connection of the data service corresponding to the connection request currently cached in the connection request queue, and notifies the underlying data connection control after all connections are closed The layer establishes a new data connection channel under the new data connection mode;

After the new data connection channel is established, the underlying data connection control layer reports to the data connection switching adaptation layer;

The data connection switching adaptation layer sends the connection request currently buffered in the connection request queue on the new data connection channel, and reestablishes the connection of the corresponding data service.

Preferably, the switching of the data connection channel includes: when the existing data connection mode is unavailable, the portable wireless access terminal establishes a new data connection channel in an available data connection mode.

Preferably, a new data connection switching adaptation layer is added between the high-level application of the portable wireless access terminal and the bottom data connection control layer;

Establishing and maintaining the connection request queue by the data connection switching adaptation layer;

When the existing data connection mode is unavailable, the underlying data connection control layer establishes a new data connection channel in the available data connection mode, and reports the data connection switching adaptation layer;

According to the report of the underlying data connection control layer, the data connection switching adaptation layer sends the connection request currently buffered in the connection request queue on the new data connection channel, and reestablishes the connection of the corresponding data service.

Preferably, the connection request includes at least: a Transmission Control Protocol (TCP) connection request and a User Datagram Protocol (UDP) connection request;

The connection of the data service includes at least: a TCP connection and a UDP connection.

A portable wireless access terminal provided by the present invention includes: a high-level data connection control layer and a bottom-layer data connection control layer, and also includes a data connection switching adaptation layer;

The data connection switching adaptation layer is located between the high-level application and the bottom data connection control layer;

The data connection switching adaptation layer is used to establish a connection request queue, and the connection request queue is used to cache the connection request sent by the data service of each currently active high-level application; after the data service is completed, the data The connection switching adaptation layer deletes the connection request corresponding to the data service from the connection request queue;

When data connection channel switching occurs, the data connection switching adaptation layer sends the connection request currently cached in the connection request queue on the switched data connection channel, and reestablishes the connection of the corresponding data service.

Preferably, when the underlying data connection control layer finds that a new data connection mode is available, and the priority of the new data connection mode is higher than that of the existing data connection mode, report to the data connection switching adaptation layer;

According to the report of the underlying data connection control layer, the data connection switching adaptation layer actively closes the connection of the data service corresponding to the connection request currently cached in the connection request queue, and notifies the underlying data connection after all connections are closed control layer;

The underlying data connection control layer establishes a new data connection channel in the new data connection mode according to the notification of the data connection switching adaptation layer, and reports the data connection switching adaptation layer after the new data connection channel is established;

After receiving the report from the underlying data connection control layer, the data connection switching adaptation layer sends the connection request currently buffered in the connection request queue on the switched data connection channel.

Preferably, when the existing data connection mode is unavailable, the underlying data connection control layer establishes a new data connection channel in the available data connection mode, and reports the data connection switching adaptation layer;

After receiving the report from the underlying data connection control layer, the data connection switching adaptation layer sends the connection request currently buffered in the connection request queue on the switched data connection channel.

Preferably, the connection request includes at least: a Transmission Control Protocol (TCP) connection request and a User Datagram Protocol (UDP) connection request;

The connection of the data service includes at least: a TCP connection and a UDP connection.

It can be seen from the above technical solution that the technical solution provided by the present invention is used to cache the connection request sent by the data service of each currently active high-level application by establishing a connection request queue, and after the data service is completed, the connection request from the connection request queue Delete the connection request corresponding to the data service; thus, when the switching of the data connection channel occurs, the connection request currently cached in the connection request queue can be sent on the switched data connection channel according to the connection request queue, and the corresponding The connection of the data service of the high-level application is rebuilt, so that when the multi-channel data connection is switched, the connection of the data service of the high-level application is automatically rebuilt, and the data service of the high-level application is automatically restored.

Description of drawings

FIG. 1 is a schematic diagram of a method for restoring data services of high-level applications when multi-channel data connections are switched in an embodiment of the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

The invention provides a technical proposal for recovering data services of high-level applications when multi-channel data connections are switched, which is suitable for portable wireless access terminals. This technical solution first establishes a connection request queue for caching the connection request sent by the data service of each active high-level application; and, after the data service is completed, deletes the connection request corresponding to the data service from the connection request queue. Connection request; when data connection channel switching occurs, the connection request currently buffered in the connection request queue is sent on the switched data connection channel, and the connection of the corresponding data service is rebuilt.

The present invention buffers the connection request sent by the data service of each high-level application in the connection request queue, and maintains the connection request queue according to the completion of each data service, so that when switching of the data connection channel occurs, the connection request can be processed according to the connection request queue. The connection requests cached in the queue re-establish the connection of the corresponding data service, so as to ensure automatic recovery of the data service of the high-level application.

There are many reasons for the switching of the data connection channel of the portable wireless access terminal, and the following two typical ones are given for illustration:

For example: when a new data connection mode is available, and the priority of the new data connection mode is higher than that of the existing data connection mode, switching of the data connection channel may be triggered. At this time, the data service connection corresponding to the connection request currently cached in the connection request queue can be actively closed first, and then a new data connection channel is established in the new data connection mode, and the new data connection channel is connected to the new data connection channel. Send the connection request currently cached in the connection request queue, and re-establish the connection of the corresponding data service.

Another example: when the existing data connection mode is suddenly unavailable, the portable wireless access terminal will establish a new data connection channel in the available data connection mode. At this time, the connection request currently cached in the connection request queue is directly sent on the new data connection channel, and the connection of the corresponding data service is reestablished.

The transmission of the data service can be carried out based on the TCP protocol, the UDP protocol, etc. Therefore, in the present invention, the connection request at least includes: a TCP connection request and a UDP connection request; the data service connection includes at least a TCP connection and a UDP connection.

In specific implementation, a data connection switching adaptation layer can be added between the high-level application of the portable wireless access terminal and the bottom data connection control layer, and the data connection switching adaptation layer can perform related operations of the method of the present invention.

Referring to Fig. 1 below, two embodiments are given to describe the present invention in detail. It should be noted that: Fig. 1 shows the three layers of high-level application, data connection switching adaptation layer and bottom data connection control layer related to the present invention in the portable wireless access terminal. Other layers and functional modules are not shown.

Embodiment one:

In this embodiment, the terminal works in the wireless data connection mode A, the high-level applications used by the user on the terminal are application 1 and application 2, and application 1 and application 2 respectively have two ongoing data services. The data connection switching adaptation layer establishes an independent connection request queue for the data services of these high-level applications, which is referred to as a TCP queue hereinafter. The cache states of the established TCP queues are: application 1_TCP1 , application 1_TCP2 , application 2_TCP1 and application 2_TCP2 .

When the wireless data connection mode A is available, the underlying data connection control layer of the terminal reports to the data connection switching adaptation layer that a new wireless data connection mode B is available, and the use priority of the wireless data connection mode B is higher.

The data connection switching adaptation layer judges the cache status of the TCP queue, deletes the connection request from the queue for the application 1_TCP1 and application 2_TCP1 that have completed the transmission, actively closes the unfinished application 1_TCP2 and application 2_TCP2, and closes the request through the current Some data connection channels of wireless data connection mode A are sent.

When the TCP connection is closed, the data connection switching adaptation layer determines that the underlying wireless access uses wireless data connection mode B, and notifies the underlying data connection control layer to establish a new data connection channel in wireless data connection mode B. When the underlying data connection control layer reports again that the data connection mode B access is completed and can be used for data services, the data connection switching adaptation layer actively rebuilds the previously closed TCP connections (application 1_TCP2 and application 2_TCP2). After the reconstruction is completed, application 1 and application 2 can perform corresponding data service transmission on the re-established TCP connection according to the existing technology, for example: the data connection handover adaptation layer can distribute the data sent by the network server to the Corresponding Application 1 and Application 2.

With the technical solution provided in this embodiment, the high-level application 1 and application 2 can automatically restore the interrupted data service during the data connection mode switching from A to B, and the user does not need to manually intervene in this, thereby improving the user experience .

Embodiment two:

In this embodiment, the terminal works in the wireless data connection mode A, the high-level applications used by the user on the terminal are application 1 and application 2, and application 1 and application 2 respectively have two ongoing data services. The data connection switching adaptation layer establishes an independent connection request queue for the data services of these high-level applications, which is referred to as a TCP queue hereinafter. The cache states of the established TCP queues are: application 1_TCP1 , application 1_TCP2 , application 2_TCP1 and application 2_TCP2 .

When the wireless data connection mode A that the terminal is using is suddenly unavailable (for example: out of coverage, signal loss), the underlying data connection control layer automatically accesses another wireless data connection mode B that can be used, and reports to the data connection switch adaptation layer.

The data connection switching adaptation layer judges the cache status of the TCP queue, and deletes the connection request from the queue for the application 1_TCP1 and application 2_TCP1 that have completed the transmission; for the application 1_TCP2 and application 2_TCP2 that have not yet completed Next, perform an active rebuild. After the reconstruction is completed, application 1 and application 2 can perform corresponding data service transmission on the re-established TCP connection according to the existing technology, for example: the data connection handover adaptation layer can distribute the data sent by the network server to the Corresponding Application 1 and Application 2.

By adopting the technical solution provided in this embodiment, the high-level application 1 and application 2 can automatically recover the interrupted data service during the process of switching to B due to the loss of data connection mode A, and the user does not need to manually intervene in this at all, thus improving the user experience. experience.

Corresponding to the above method, the present invention also provides a portable wireless access terminal, which includes a data connection switching adaptation layer in addition to the high-level and bottom-level data connection control layers;

The data connection switching adaptation layer is located between the high-level application and the bottom data connection control layer;

The data connection switching adaptation layer is used to establish a connection request queue, and the connection request queue is used to cache the connection request sent by the data service of each currently active high-level application; after the data service is completed, the data The connection switching adaptation layer deletes the connection request corresponding to the data service from the connection request queue;

When data connection channel switching occurs, the data connection switching adaptation layer sends the connection request currently cached in the connection request queue on the switched data connection channel, and reestablishes the connection of the corresponding data service.

Preferably, when the underlying data connection control layer finds that a new data connection mode is available, and the priority of the new data connection mode is higher than that of the existing data connection mode, report to the data connection switching adaptation layer;

According to the report of the underlying data connection control layer, the data connection switching adaptation layer actively closes the connection of the data service corresponding to the connection request currently cached in the connection request queue, and notifies the underlying data connection after all connections are closed control layer;

The underlying data connection control layer establishes a new data connection channel in the new data connection mode according to the notification of the data connection switching adaptation layer, and reports the data connection switching adaptation layer after the new data connection channel is established;

After receiving the report from the underlying data connection control layer, the data connection switching adaptation layer sends the connection request currently buffered in the connection request queue on the switched data connection channel.

Preferably, when the existing data connection mode is unavailable, the underlying data connection control layer establishes a new data connection channel in the available data connection mode, and reports the data connection switching adaptation layer;

After receiving the report from the underlying data connection control layer, the data connection switching adaptation layer sends the connection request currently buffered in the connection request queue on the switched data connection channel.

Preferably, the connection request includes at least: a Transmission Control Protocol (TCP) connection request and a User Datagram Protocol (UDP) connection request;

The connection of the data service includes at least: a TCP connection and a UDP connection.

It can be seen from the above-mentioned embodiments that the technical solution provided by the present invention is used to cache the connection request sent by the data service of each active high-level application by establishing a connection request queue, and after the data service is completed, the connection request from the connection request queue Delete the connection request corresponding to the data service; thus, when the switching of the data connection channel occurs, the connection request currently cached in the connection request queue can be sent on the switched data connection channel according to the connection request queue, and the corresponding The connection of the data service of the high-level application is rebuilt, so that when the multi-channel data connection is switched, the connection of the data service of the high-level application is automatically rebuilt, and the data service of the high-level application is automatically restored.

Through the technical scheme of the invention, when ordinary users use portable wireless access terminals, even if the terminals switch between multi-channel data connections, the data services of high-level applications will not be affected in any way. Users can use the high-level applications they care most about smoothly and freely, without having to worry about switching between the underlying multi-channel data connections.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection.

Claims (10)

1. A method for recovering data services of high-level applications when multi-channel data connection switching is applicable to portable wireless access terminals, characterized in that, comprising: Establish a connection request queue, which is used to cache the connection requests sent by the data services of each currently active high-level application; After the data service is completed, delete the connection request corresponding to the data service from the connection request queue; When switching of the data connection channel occurs, the connection request currently buffered in the connection request queue is sent on the switched data connection channel, and the connection of the corresponding data service is reestablished. 2. The method according to claim 1, characterized in that: The switching of the data connection channel includes: when a new data connection mode is available, and the priority of the new data connection mode is higher than that of the existing data connection mode, corresponding to the connection request currently cached in the connection request queue Actively close the connection of the data service, and establish a new data connection channel in the new data connection mode. 3. The method according to claim 2, characterized in that: A new data connection switching adaptation layer is added between the high-level application of the portable wireless access terminal and the bottom data connection control layer; Establishing and maintaining the connection request queue by the data connection switching adaptation layer; When the underlying data connection control layer finds that a new data connection mode is available, and the priority of the new data connection mode is higher than that of the existing data connection mode, report to the data connection switching adaptation layer; According to the report of the underlying data connection control layer, the data connection switching adaptation layer actively closes the connection of the data service corresponding to the connection request currently cached in the connection request queue, and notifies the underlying data connection control after all connections are closed The layer establishes a new data connection channel under the new data connection mode; After the new data connection channel is established, the underlying data connection control layer reports to the data connection switching adaptation layer; The data connection switching adaptation layer sends the connection request currently buffered in the connection request queue on the new data connection channel, and reestablishes the connection of the corresponding data service. 4. The method according to claim 1, characterized in that: The switching of the data connection channel includes: when the existing data connection mode is unavailable, the portable wireless access terminal establishes a new data connection channel in an available data connection mode. 5. The method according to claim 4, characterized in that: A new data connection switching adaptation layer is added between the high-level application of the portable wireless access terminal and the bottom data connection control layer; Establishing and maintaining the connection request queue by the data connection switching adaptation layer; When the existing data connection mode is unavailable, the underlying data connection control layer establishes a new data connection channel in the available data connection mode, and reports the data connection switching adaptation layer; According to the report of the underlying data connection control layer, the data connection switching adaptation layer sends the connection request currently buffered in the connection request queue on the new data connection channel, and reestablishes the connection of the corresponding data service. 6. The method according to any one of claims 1 to 5, characterized in that: The connection request at least includes: a Transmission Control Protocol (TCP) connection request and a User Datagram Protocol (UDP) connection request; The connection of the data service includes at least: a TCP connection and a UDP connection. 7. A portable wireless access terminal, comprising: high-level and bottom-level data connection control layers, characterized in that it also includes a data connection switching adaptation layer; The data connection switching adaptation layer is located between the high-level application and the bottom data connection control layer; The data connection switching adaptation layer is used to establish a connection request queue, and the connection request queue is used to cache the connection request sent by the data service of each currently active high-level application; after the data service is completed, the data The connection switching adaptation layer deletes the connection request corresponding to the data service from the connection request queue; When data connection channel switching occurs, the data connection switching adaptation layer sends the connection request currently cached in the connection request queue on the switched data connection channel, and reestablishes the connection of the corresponding data service. 8. The terminal according to claim 7, characterized in that: When the underlying data connection control layer finds that a new data connection mode is available, and the priority of the new data connection mode is higher than that of the existing data connection mode, report to the data connection switching adaptation layer; According to the report of the underlying data connection control layer, the data connection switching adaptation layer actively closes the connection of the data service corresponding to the connection request currently cached in the connection request queue, and notifies the underlying data connection after all connections are closed control layer; The underlying data connection control layer establishes a new data connection channel in the new data connection mode according to the notification of the data connection switching adaptation layer, and reports the data connection switching adaptation layer after the new data connection channel is established; After receiving the report from the underlying data connection control layer, the data connection switching adaptation layer sends the connection request currently buffered in the connection request queue on the switched data connection channel. 9. The terminal according to claim 7, characterized in that: When the existing data connection mode is unavailable, the underlying data connection control layer establishes a new data connection channel under the available data connection mode, and reports the data connection switching adaptation layer; After receiving the report from the underlying data connection control layer, the data connection switching adaptation layer sends the connection request currently buffered in the connection request queue on the switched data connection channel. 10. The terminal according to any one of claims 7 to 9, characterized in that: The connection request at least includes: a Transmission Control Protocol (TCP) connection request and a User Datagram Protocol (UDP) connection request; The connection of the data service includes at least: a TCP connection and a UDP connection.

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