WO2012155606A1 - Wireless communication terminal and method for driving the same - Google Patents

Abstract

Disclosed are a wireless communication terminal and a method for driving the same. The method comprises: a USB composite device driver of a wireless communication terminal creating and managing a virtual bus device; loading a virtual bus driver, and after initializing the virtual bus device successfully, the virtual bus driver creating and managing its own network device, and transparently transmitting a USB request and a response between a network device driver and the USB composite device driver. In the present invention, a virtual bus driver is added to a lower layer of a current data card driver, a network device of a data card and a USB composite device of an operating system are isolated, creation and management of the network device are completely finished by the virtual bus driver, a USB composite device driver of the operating system does not participate in the creation and management anymore, so the operation is more flexible; and furthermore, the virtual bus driver may identify its own various abnormal cases and various abnormal cases of the network device, and can effectively process the cases.

Description

 Wireless communication terminal and driving method thereof

 The present invention relates to the field of communication technologies, and in particular, to a wireless communication terminal and a driving method thereof. Background technique

 A data card is a common wireless terminal product that provides users with high-speed network data services and outstanding mobility. The data card can be connected to the computer through a Universal Serial Bus (USB) or a Personal Computer Memory Card International Association (PCMCIA) standard interface. The simplest data card can be just a modem device or a network device. Here, for convenience of description, it can be collectively referred to as a network device, and a complicated one may include a serial port, a television cat, a memory card, or a CD.

Most users today use the Windows operating system. The use of data cards on Windows requires driver software support. Windows itself has provided a variety of general-purpose device drivers. Taking a USB data card as an example, a data card containing only a modem device or a network device is provided, and Windows provides a USB Hub driver for it. The data card manufacturer needs to provide a modem device or a network device driver located above the USB Hub. In addition to modem devices or network devices, some data cards contain some other types of devices, such as readable and writable memory cards, which can be used by users as USB flash drives, including CDs, which can store some necessary software, including multiple devices. USB data cards are called USB composite devices. These devices require not only modem devices or network device drivers provided by USB Hub drivers and data card manufacturers, but also USB composite device driver support. The USB Hub device is the parent device of the USB composite device, and the USB composite device is the parent device of the network device and other devices. In the form of a tree structure, the USB Hub device is a USB composite device, and the USB composite device is a network device and other devices. Figure 1 is a typical prior art device structure diagram including storage Devices, network devices, other devices, and USB composite devices. The bottom part is a USB composite device, which can be regarded as the root device of the data card. When the user inserts the card, the operating system loads the USB composite device driver for the data card, and the USB composite device enumerates the storage device of the data card, the network device and/or Or other equipment.

 The above is a common data card driver structure. The driver runs in the kernel mode and is an indispensable part of the data card. It provides a control interface to the application and performs various practical operations on the data card downward. Therefore, the reliability and stability of the drive is particularly important. Summary of the invention

 The object of the present invention is to provide a wireless communication terminal and a driving method thereof, in order to overcome the problem that the existing data card network device driver cannot be used after being plugged and unplugged in some cases.

 To achieve the above object, the present invention provides a method for driving a wireless communication terminal, the method comprising:

 The USB composite device driver of the wireless communication terminal creates and manages a virtual bus device; creates and manages its own network device, and transparently transmits USB requests and responses between the network device driver and the USB composite device driver.

 Further, before the USB composite device driver creates and manages the virtual bus device, the method further includes:

 When it is determined that the detected network device is a composite device, the composite device is loaded with a USB composite device driver.

 Further, after loading the USB composite device driver for the composite device, the method further includes:

 When it is determined that the network device is a storage device coexistence network device, the USB composite device driver creates a virtual bus device.

Further, the virtual bus driver creates and manages its own network device as: The virtual bus driver determines if there is already a network device created by itself, and when not present, creates a network device, and when present, the virtual bus driver creates and reports a different network device than the existing network device.

 The present invention also provides a wireless communication terminal, where the wireless communication terminal includes a network device driving unit, a USB composite device driving unit, and a virtual bus driving unit;

 The USB composite device driving unit is configured to create and manage a virtual bus device; the virtual bus driving unit is configured to initialize and create the virtual network device, create and manage its own network device, and drive the network device in the network device USB request and response are transparently transmitted between the USB composite device driver units.

 Further, the virtual bus driving unit includes an initialization module for setting global variables and dispatching routines to complete a driving initialization task.

 Further, the virtual bus driving unit includes a plug-and-play module, which is responsible for creating, querying, and removing network devices, determining whether a network device created by itself exists, and when not present, creating a network device, when When present, create and report a network device that is different from the existing network.

 Further, the virtual bus driving unit includes a power module for processing driving messages of the virtual bus device and the network device.

 In summary, the use of the present invention has the following beneficial effects:

 1) The virtual bus driver can identify various abnormal conditions of itself and network devices and can effectively handle them. For example, when a user uses a data card with a storage device to coexist, if the file on the memory card is opened and the data card is unplugged, the data card is inserted again due to the operating system itself, and the network card device cannot complete the initialization operation, resulting in the data card being unavailable. .

2) The invention adds a virtual bus driver under the current data card driver, and isolates the network device of the data card and the USB composite device of the operating system. The creation and management of the network device is completely completed by the virtual bus driver, and the USB complex of the operating system is completed. Device drivers are no longer involved, and operations are even more Flexible. DRAWINGS

 Figure 1 is a block diagram of a typical prior art device;

 2 is a structural diagram of a device according to an embodiment of the present invention;

 FIG. 3 is a schematic flow chart of an embodiment of the present invention. detailed description

 The invention is directed to a composite device, which overcomes the problem that the existing data card network device driver cannot be used after being plugged and unplugged under certain circumstances. For example, for a data card with a storage device coexisting, if the user unplugs the data card after opening the file in the storage device and inserts it again, the network device of the data card cannot be used. Viewing the device manager will display a yellow exclamation point, which is due to the opening. The file is not closed. The card downloading system does not send a removal notification to the disc and other devices. The driver cannot delete the device. When the card is inserted again, the USB composite device driver enumerates the same device. The network device driver cannot complete the initialization, and the device cannot be enabled. use.

 The technical solution of the present invention includes a network device driving unit, a USB composite device driving unit, and a virtual bus driving unit. A USB composite device is the parent device of a virtual bus device. It is responsible for creating and managing virtual bus devices. The virtual bus device is the parent device of the network device and is responsible for creating and managing network devices. That is, a virtual bus driving unit is added between the network device driving unit and the USB composite device driving unit, and the virtual bus driving unit is responsible for creating and managing the network device thereon, and is transparent between the network device driving unit and the USB composite device driving unit. Pass USB request and response.

 The virtual bus driver unit mainly consists of three parts: an initialization module, a plug-and-play module, and a power module. The initialization module sets global variables and dispatch routines to complete the driver initialization task. The plug-and-play module is responsible for the creation, query, and removal of network devices. The power module handles drive messages for virtual bus devices and network devices.

The implementation of the technical solution will be further described in detail below with reference to the accompanying drawings. 2 is a structural diagram of a device according to an embodiment of the present invention, including a storage device, a network device, other devices, a virtual bus device, and a USB composite device. At the bottom is the USB composite device. When the user inserts the card, the operating system loads the USB composite device driver for the data card, and the USB composite device driver creates the storage device, the virtual bus device and other devices. After the virtual bus device is successfully initialized, the virtual bus driver recreates the network device, and the operating system loads the network device driver.

 Fig. 3 is a flow chart showing an embodiment of the present invention, showing the entire process from the start of the user card to the establishment of all the drivers.

 S301: The user inserts a data card;

 S302: The operating system determines whether it is a composite device data card, if not, proceeds to step S308 to directly load the network device driver, the process ends; if it is a composite device data card, then proceeds to step S303;

 S303: The operating system loads the USB composite device driver for the data card;

 S304: determining whether it is a storage device coexistence data card, if not, proceeding to step S308 to directly load the network device driver, the process ends; if the storage device coexists with the data card, then proceeds to step S305;

 S305: The USB composite device driver creates a virtual bus device, and the operating system loads the virtual bus driver for the virtual bus device;

 S306: The virtual bus driver checks whether there is already a network device created by the network device, if not, then proceeds to step S307, and if yes, proceeds to step S309;

 In this step, when there is a network device created by the virtual bus driver, it indicates that the previous network device has not been removed, which may be caused by the user inserting the card or other reasons without closing the file on the storage device.

 S307: Create a network device;

 S308: The operating system loads the network device driver, and proceeds to step S310;

S309: The virtual bus driver creates and reports a different network device and proceeds to step S310; S310: The process ends.

 Compared with the prior art, the present invention has the following advantages and effects:

 The virtual bus driver can identify multiple anomalies of itself and network devices and can handle them efficiently. For example, when a user uses a data card that coexists with a storage device, if the file on the memory card is opened and the data card is unplugged, the data card is inserted again due to the operating system itself, and the network device cannot complete the initialization operation, resulting in the data card being unavailable. . The invention adds a virtual bus driver under the current data card driver, and isolates the network device of the data card and the USB composite device of the operating system. The creation and management of the network device is completely completed by the virtual bus driver, and the USB composite device driver of the operating system is driven. No longer involved, the operation is more flexible.

 Of course, the present invention may be embodied in various other modifications and changes without departing from the spirit and scope of the invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles are intended to be included within the scope of the present invention.

Claims

Claim  A method for driving a wireless communication terminal, the method comprising: the universal serial bus USB composite device driver of the wireless communication terminal creates and manages a virtual bus device; creates and manages its own network device, and Transparent transmission of USB requests and responses between network device drivers and USB composite device drivers.  2. The method of claim 1, wherein the method further comprises: before the USB composite device drives the creation and management of the virtual bus device, the method further comprising:  When it is determined that the detected network device is a composite device, the composite device is loaded with a USB composite device driver.  The method of claim 2, after the loading of the USB composite device driver for the composite device, the method further includes:  When it is determined that the network device is a storage device coexistence network device, the USB composite device driver creates a virtual bus device.  The method according to any one of claims 1 to 3, wherein the virtual bus driver creates and manages its own network device as:  The virtual bus driver determines if there is already a network device created by itself, and when not present, creates a network device, and when present, the virtual bus driver creates and reports a different network device than the existing network device.  A wireless communication terminal, comprising: a network device driving unit, a USB composite device driving unit, and a virtual bus driving unit; wherein The USB composite device driving unit is configured to create and manage a virtual bus device; the virtual bus driving unit is configured to initialize and create the virtual network device, create and manage its own network device, and drive the network device in the network device USB composite device drive unit Transparently pass USB requests and responses.  The wireless communication terminal according to claim 5, wherein the virtual bus driving unit comprises an initialization module for performing a driving initialization task.  The wireless communication terminal according to claim 5, wherein the virtual bus driving unit includes a plug-and-play module for determining whether a network device created by itself exists, and when not present, creating a network The device, when present, creates and reports a network device that is different from the existing network.  8. The wireless communication terminal according to claim 5, wherein the virtual bus driving unit comprises a power module for processing a driving message of the virtual bus device and the network device.