WO2011072537A1 - 处理at命令的装置、方法及系统 - Google Patents

处理at命令的装置、方法及系统 Download PDF

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Publication number
WO2011072537A1
WO2011072537A1 PCT/CN2010/076552 CN2010076552W WO2011072537A1 WO 2011072537 A1 WO2011072537 A1 WO 2011072537A1 CN 2010076552 W CN2010076552 W CN 2010076552W WO 2011072537 A1 WO2011072537 A1 WO 2011072537A1
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channel
command
module
state
list
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PCT/CN2010/076552
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English (en)
French (fr)
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陈云
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中兴通讯股份有限公司
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Publication of WO2011072537A1 publication Critical patent/WO2011072537A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/14—Multichannel or multilink protocols

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to an apparatus, method, and system for processing an AT command.
  • BACKGROUND In modern society, with the acceleration of people's life rhythm, mobile terminals have become an indispensable communication communication tool for people.
  • the development of various communication services of mobile terminals is inseparable from AT commands, especially in the process of interacting with the protocol stack.
  • the major protocol stack providers no longer provide external interfaces, but use internationally-used AT commands (V.25 standard;) to enable modules outside the protocol stack to interact with the protocol stack through AT commands to achieve information encapsulation. .
  • To perform business interaction it is necessary to transmit service data through the channel.
  • the AT channel is a virtual AT command transmission and transmission path, which is equivalent to the bearer mode of the AT command, similar to a bus on the PC, and all AT commands are sent and Reception is performed on the AT channel, that is, the AT channel provides a transmission path for the AT command.
  • the single-channel mode is generally used, and the subsequent AT commands are stopped and waited, and the next AT command can be sent after waiting for the previous command response to be returned, that is, the AT command is serially transmitted on the channel.
  • the second AT command can be initiated after receiving the response of the previous AT command. Otherwise, the interaction of the previous AT command will be canceled, and multi-service parallelism cannot be achieved.
  • the multi-channel concurrent operation is generally adopted, that is, one or more AT channels can be activated at a time to realize multi-service concurrency, and the interaction efficiency of the service can be improved.
  • multi-channel concurrent operation in most cases, there is not much traffic, and only one channel may be used.
  • the present invention provides an apparatus for processing an AT command, which includes: an AT command sending module and an AT command receiving module; the AT command sending module is configured to receive service information from the terminal module, and invoke The application function sends an AT channel application information to the AT command receiving module; the AT command receiving module sends the module according to the AT channel application information to the AT command.
  • the AT command receives an AT channel that transmits an AT command and receives an AT command response message between the modules, and closes the used AT channel; sends the AT command to the data conversion module, and receives the AT command response information from the data conversion module.
  • the device for processing an AT command wherein the AT command receiving module includes an AT channel queue management module; the AT channel queue management module is configured to record a state of an AT channel, and the AT command receiving module is configured according to the AT channel The state selects to open the AT channel.
  • the apparatus for processing an AT command wherein the AT channel queue management module is configured to: use a status AT channel list and a shutdown state AT channel list; wherein the usage status AT channel list is used to record an AT in use state The channel number of the channel; the closed state AT channel list is used to record the channel number of the AT channel in the closed state.
  • the device for processing an AT command wherein the AT channel queue management module is configured to transfer a channel number of the closed AT channel from a use state AT channel list to a closed state AT channel list.
  • the device for processing an AT command wherein the channel queue management module uses the channel number of the opened AT channel to be transferred from the closed state AT channel list to the use state AT channel list.
  • the present invention further provides a method of processing an AT command, which includes the following steps: Transmitting an AT channel according to the AT channel application information; transmitting an AT command through the AT channel, and performing data conversion and interaction on the AT command to generate an AT command response information; returning the AT command response information by using the AT channel, and Close the AT channel.
  • the method for processing an AT command wherein the step 4 before the AT channel is opened according to the AT channel application information further includes: step 4: calling the AT channel request function to generate an AT channel application information.
  • the method for processing an AT command, wherein the step 4 of the AT channel according to the AT channel application information includes the following steps: the AT channel application information is used to query the status of the AT channel, and the state of the AT channel is selected to be opened AT. aisle.
  • the method for processing an AT command wherein the step 4 of the AT channel according to the AT channel application information further includes step 4: initializing an AT channel context, a global variable value, and an AT command buffer space; The number is transferred from the closed state AT channel list to the use status AT channel list; the channel number of the AT channel is returned.
  • the method for processing an AT command wherein: returning the AT command response information by using the AT channel, and closing the AT channel further includes: step 4: detecting that the AT channel has been used, The AT channel is closed, and the AT channel context is cleared; the channel number of the AT channel is transferred from the use state AT channel list to the closed state AT channel list.
  • the present invention also provides a system for processing an AT command, comprising: a terminal module, a data conversion module, and a protocol stack control module, wherein the data conversion module is respectively connected to the terminal module and the protocol stack control module, and is used for the terminal.
  • the system further includes an AT command sending module and an AT command receiving module; the AT command sending module is configured to receive service information of the terminal module, and invoke an application function to send an AT channel application information to the AT command receiving module.
  • the AT command receiving module is an AT channel that transmits an AT command and an AT command response message between the AT command sending module and the AT command receiving module, closes the used AT channel, and sends the used AT channel to the data conversion module.
  • the system for processing an AT command wherein the AT command receiving module includes an AT channel queue management module; the AT channel queue management module is configured to record a state of an AT channel, and the AT command receiving module is configured according to the AT channel The state selects to open the AT channel.
  • the system for processing an AT command wherein the AT channel queue management module is configured to: use a state AT channel list and a shutdown state AT channel list; wherein the use state AT channel list is used to record an AT in use state The channel number of the channel; the closed state AT channel list is used to record the channel number of the AT channel in the closed state.
  • the system for processing an AT command wherein the AT channel queue management module is configured to transfer a channel number of the closed AT channel from a use state AT channel list to a closed state AT channel list.
  • the system for processing an AT command wherein the channel queue management module uses the channel number of the opened AT channel to be transferred from the closed state AT channel list to the use state AT channel list.
  • the present invention provides an apparatus, method and system for processing an AT command.
  • FIG. 1 is a schematic diagram of an apparatus for processing an AT command according to the present invention
  • FIG. 2 is a flowchart of opening an AT channel in a method for processing an AT command according to the present invention
  • FIG. 3 is a diagram showing a method for processing an AT command according to the present invention.
  • FIG. 4 is a flowchart of a method for processing an AT command according to the present invention; and
  • FIG. 5 is a schematic structural diagram of a system for processing an AT command according to the present invention.
  • the preferred embodiments of the apparatus, method and system of the present invention are described in more detail below with reference to the accompanying drawings.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The apparatus for processing an AT command of the present invention can provide a plurality of AT channels for a terminal module to implement multi-service concurrency, such as sending and receiving short messages while making a call, and having no service interaction or only a few in the terminal module.
  • the device of the present invention includes an AT command sending module 10 and an AT command receiving module 20; wherein the AT command sending module 10 is configured to receive service information from a terminal module, such as call service information or short message service.
  • the AT command receiving module 20 includes an AT channel queue management module 21 and an AT command cache management module 22, wherein the AT channel queue management module 21 is used to record the AT The state of the channel, the AT command receiving module 20 selects to open the AT channel in the state of the AT channel.
  • the AT channel queue management module 21 is provided with: a usage state AT channel list and a shutdown state AT channel list; wherein the usage state AT channel list is used to record a channel number of the AT channel in use state; the shutdown state The AT channel list is used to record the channel number of the AT channel in the closed state.
  • the AT command receiving module 20 receives the AT channel request information, it first queries whether the AT channel queue management module 21 is in the closed state.
  • the AT channel if any, selects to open one of the AT channels, and transfers the channel number of the AT channel from the closed state channel list to the use status AT channel list, and then calls its own application function to obtain
  • the channel number of the AT channel is fed back to the AT command sending module 10, and the AT command sending module 10 searches for the corresponding AT channel after receiving the channel number, and then sends the AT channel to the AT command receiving module 20 by the AT channel.
  • AT command if not, the AT channel sending module 10 feeds back the AT channel open failure message.
  • the AT command receiving module 20 first passes the AT command cache management module.
  • the AT command is saved, and then the AT command is converted into an AT command that can be recognized by the protocol stack control module by the data conversion module.
  • the AT command cache management module deletes the AT command.
  • the data conversion module sends the data-converted AT command to the protocol stack control module for processing, and after the protocol stack control module finishes processing, the data conversion module converts the AT command response information into the AT command format.
  • the data conversion module feeds back to the AT command receiving module 20, and finally the AT command receiving module 20 transmits the AT channel sent by the AT command sending module 10 to the AT command sending module 10.
  • the device of the present invention completes a service interaction for the system.
  • the AT command receiving module 20 turns off the AT channel; then, the AT channel queue management module 21 uses the channel number of the AT channel from the use state AT channel. In the list, go to the list of closed AT channels.
  • the AT command sending module 10 can simultaneously apply for multiple AT channels to the AT command receiving module 20, so as to simultaneously transmit multiple AT commands to the AT command receiving module 20, thereby The multi-service concurrent interaction is implemented.
  • the AT channel queue management module 21 can be used to close the AT channel used by the service interaction to save the AT channel resources.
  • the method for processing an AT command of the present invention comprises three phases, an AT channel opening phase, an AT command performing a protocol stack processing phase, and an AT channel closing phase, wherein the AT channel opening phase and the AT channel closing phase are core inventive points of the present invention.
  • the following is a detailed description of its specific process steps;
  • Step L1 call the AT channel application function, generate AT channel application information
  • Step L2 according to the AT channel application information, find whether there is an AT channel in the closed state, and if so, Go to step L3; if no, go to step L31
  • Step 4 gathers L3, selects to open an AT channel, and initially ⁇ the AT channel context of the AT channel, global variable value, and sets the AT command buffer space
  • Step L31 feedback AT channel open failure information, the process ends
  • Step L4 Add the channel number of the AT channel to the AT channel list from the closed state to the AT channel list in the use state
  • Step L5 call the AT channel application function to obtain, and feed back the channel number of the AT channel
  • Step L6 the channel number Find the corresponding AT channel and send an AT command through the AT channel.
  • Step Kl check if there is a used AT channel that has been turned on, and if so, go to the step
  • Step K2 If no, go to step K21; Step K2, close the opened used AT channel, and clear the AT channel context; Step K21, feedback AT channel open failure information, the process ends; Step K3, The channel number of the AT channel is changed from the use status AT channel list to the off state.
  • the method for processing an AT command according to the present invention when the terminal module has a service interaction, applies for an AT channel through the application function, and sends an AT command through the AT channel, and then closes the AT channel after receiving the AT command response message; At present, an AT command is waiting for a response, and the system receives an AT command, and can provide a second AT channel for sending the AT command.
  • the method of the present invention can compete with each other when multiple services need to interact with each other. Select an AT channel to send and receive AT commands. Referring to Figure 4, the specific process steps are as follows: Step S l, the terminal module initiates service interaction and generates service information; Step S2, generates an AT command according to the service information, and invokes an AT channel application.
  • the function generates an AT channel request information for applying for an AT channel; Step S3, according to the AT channel application information, query whether there is an available AT channel in the closed state, and if yes, go to step S4; if no, go to step S41; step S4, select to open an AT channel, select the The AT channel is initialized, and the channel number of the opened AT channel is transferred from the closed AT channel list to the use state AT channel list, and then the AT channel request function is called to obtain the channel number of the AT channel, and the AT channel is fed back.
  • the channel number of the AT channel includes: a global variable value, an AT channel relationship context, an AT command buffer space; step S41, feedback AT channel opening failure information, the process ends; step S5, according to the channel number of the AT channel Finding the corresponding AT channel, and transmitting the AT command through the AT channel; Step S6, saving the AT command, and then converting the AT command into an AT command that can be recognized by the protocol stack control module, and the channel number of the AT channel
  • the information index number is added to the converted AT command and sent to the protocol stack control module; in the above step S6, After the AT command is successfully converted, the AT command is deleted to free up disk space.
  • Step S7 After the AT command is processed by the protocol stack control module, data conversion is performed to generate AT command response information.
  • the channel number of the AT channel is stored in the AT command response information in the form of an information index number;
  • the AT channel corresponding to the channel number is searched;
  • Step S8 the AT command response information is used to find the corresponding AT channel, and the AT command response information is fed back through the corresponding AT channel; when there is no corresponding response in the AT command response information
  • the channel number information of the AT channel is added, the channel number of all the opened AT channels is added to the AT command response information, that is, the AT command response information can be fed back from any AT channel that has been opened;
  • Step S9 Check whether there is an open AT channel that has been used, if yes, go to step M1 S 11; if not, go to step 4 to gather S 10;
  • Step S 10 close the AT channel, clear the AT channel status
  • the parameter, the AT channel context is revoked, and the channel number of the AT channel is transferred from the use state AT channel list to the closed state AT
  • the AT channel can be a physical serial port, a MUX virtual serial port, and a logical serial port.
  • the method of the present invention can implement multi-service concurrency, and can close the used AT channel when the traffic is small, to avoid Too much channel opening causes waste of channel resources, ensuring the reuse of channels between services, and improving the interaction efficiency of AT commands.
  • the system for processing the AT command of the present invention can realize the multi-service concurrency, and can close the used AT channel when the service is not much, save the channel resources, and add the AT command sending module and the AT command receiving module to the original system. Referring to FIG.
  • the method includes: a terminal module 11, an AT command sending module 12, an AT command receiving module 13, a data conversion module 14, and a protocol stack control module 15, wherein the AT command sending module 12 and the terminal module 11 And the AT command receiving module 13 is connected, the data conversion module 14 is connected to the AT command receiving module 13 and the protocol stack control module 15; the terminal module 11 is configured to send service information to the AT command sending module 12;
  • the AT command sending module 12 is configured to receive the service information of the terminal module 11, invoke the application function in the AT command receiving module, generate an AT channel application information, and then send the AT channel application information to the AT command receiving module 13, when the AT channel After the application is successful, the AT command is transmitted to the AT command receiving module 13 through the AT channel to which the application is applied;
  • the AT command receiving module 13 provides an AT channel for transmitting an AT command and an AT command response message between the AT command sending module 12 and the AT command receiving module 13 according to the AT channel application information; and sending the AT command to The data conversion module 14 and the AT command response information received from the data conversion module 14
  • the AT channel queue management module 131 is configured with: a usage state AT channel list and a shutdown state AT channel list; wherein the usage state AT channel list is used to record a channel number of the AT channel in use state; the shutdown state The AT channel list is used to record the channel number of the AT channel in the closed state; after the AT command receiving module 13 receives the AT channel request information, first query whether there is an AT channel in the closed state channel list in the closed state, if any, Select to open one of the AT channels, and transfer the channel number of the AT channel from the closed status channel list to the use status AT channel list, and then call its own application function to obtain the channel number of the AT channel, and the channel number Feedback to the AT command sending module 12, the AT command sending module 12 receives the channel number and then searches for the corresponding AT channel, and then the AT channel sends an AT command to the AT command receiving module 13; if not, sends the AT command to the AT command Module 12 feeds back the AT channel turn-on failure message.
  • the AT command receiving module 13 After receiving the AT command, the AT command receiving module 13 saves the AT command through the AT command cache management module 132, and then calls the data conversion module 14 to perform data conversion on the AT command, and converts it into a protocol stack control.
  • the module 15 recognizes the AT command and converts the AT command processed by the protocol stack control module 15 into the AT command response information in the AT command format.
  • the AT command cache management module 132 deletes the AT command to release the disk space.
  • the protocol stack control module 15 is configured to process the AT command that is converted by the data conversion module 14. The process is a prior art and is not described here.
  • the system of the present invention is used to add an AT command sending module and an AT command receiving module on the basis of the original system, to dynamically create an AT channel for transmitting an AT command, to implement multi-service concurrency, and to close the AT after the service interaction is completed. Channels to save channel resources.

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  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
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Abstract

本发明提供了一种处理AT命令的装置、方法及系统。该处理AT命令的装置包括：AT命令发送模块和AT命令接收模块，AT命令发送模块，用于接收来自终端模块的业务信息，调用申请函数向AT命令接收模块发送AT通道申请信息；AT命令接收模块，根据AT通道申请信息为AT命令发送模块与AT命令接收模块之间开通传输AT命令和接收AT命令响应信息的AT通道，关闭已使用完毕的AT通道；将AT命令发送至数据转换模块，并接收来自数据转换模块的AT命令响应信息。本发明实现了并行开通多个传输AT命令的AT通道，以支持终端模块的多业务并发，同时当业务完成后关闭已使用完毕的AT通道，与现有技术相比节约了大量的通道资源。

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处理 AT命令的装置、 方法及系统 技术领域 本发明涉及通讯技术领域， 尤其涉及一种处理 AT命令的装置、 方法及 系统。 背景技术 现代社会中， 随着人们生活节奏的加快， 移动终端已经成为人们必不可 少的通信联络工具。 移动终端的各种通讯业务的开展均离不开 AT命令， 尤 其是与协议栈进行交互的过程中。 目前各大协议栈提供厂商已经不再提供对 外接口， 而是使用国际通用的 AT命令（ V.25标准；)， 使协议栈以外各模块通 过 AT命令与协议栈进行交互， 以达到信息的封装。 要进行业务交互就需要通过通道进行业务数据传输， 其中， AT通道是虚 拟的一条 AT命令收发传输通路， 相当于 AT命令的承载方式， 类似于 PC机 上的一条总线， 所有的 AT命令的发送和接收都在该 AT通道上进行， 即 AT 通道为 AT命令提供传输途径。 根据目前的 AT命令规范，一般釆用单通道方式， 后续 AT命令釆取停等 的方法， 等待上一个命令响应返回后才可以发送下一个 AT命令， 即 AT命令 在通道上串行发送， 需在收到前一 AT命令响应后才能发起第二条 AT命令， 否则将取消前一个 AT命令的交互， 而不能实现多业务并行。 随着通讯业务 的增多， 如搜网、 呼叫控制、 短信息、 SIM卡操作、 PS拨号上网等功能； 同 时有些通讯业务对应的 AT命令响应时间较长， 有些则响应时间较短， 如果 在同一条 AT通道上进行 AT命令的收发， 后续 AT命令需要排队等待， 效率 低。 现有技术为了解决上述不能实现多业务并发技术问题， 一般釆用多通道 并发操作， 即一次可开通一个或多个 AT通道， 实现多业务并发， 可提高业 务的交互效率。 但是， 釆用多通道并发操作， 在大多数情况下业务不多， 可 能只用到一个通道， 其他通道一般情况下都处于空闲状态， 造成通道资源的 浪费。 发明内容 本发明的目的之一在于提供一种处理 AT命令的装置、 方法及系统， 以 实现多业务并发， 同时业务量少时关闭已使用完毕的 AT通道， 节约通道资 源。 本发明的技术方案如下： 本发明提出了一种处理 AT 命令的装置， 其包括： AT 命令发送模块和 AT命令接收模块； 所述 AT命令发送模块， 用于接收来自终端模块的业务信息， 调用申请 函数向 AT命令接收模块发送 AT通道申请信息； 所述 AT命令接收模块， 根据 AT通道申请信息为 AT命令发送模块与
AT命令接收模块之间开通传输 AT命令和接收 AT命令响应信息的 AT通道， 关闭已使用完毕的 AT通道； 将 AT命令发送至数据转换模块， 并接收来自数 据转换模块的 AT命令响应信息。 所述的处理 AT命令的装置， 其中， 所述 AT命令接收模块包括 AT通道 队列管理模块； 所述 AT通道队列管理模块， 用于记录 AT通道的状态， 所述 AT命令接收模块根据该 AT通道的状态选择开通 AT通道。 所述的处理 AT命令的装置， 其中， 所述 AT通道队列管理模块设置有： 使用状态 AT通道列表和关闭状态 AT通道列表； 其中，所述使用状态 AT通道列表用于记录处于使用状态的 AT通道的通 道号； 所述关闭状态 AT通道列表用于记录处于关闭状态的 AT通道的通道号。 所述的处理 AT命令的装置， 其中，所述 AT通道队列管理模块用于将所 述关闭的 AT通道的通道号由使用状态 AT通道列表转入关闭状态 AT通道列 表。 所述的处理 AT命令的装置， 其中， 所述通道队列管理模块用于所述开 通的 AT通道的通道号由关闭状态 AT通道列表转入使用状态 AT通道列表。 本发明另提出一种处理 AT命令的方法， 其包括以下步骤： 根据 AT通道申请信息开通 AT通道； 通过所述 AT通道传输 AT命令，并对所述 AT命令进行数据转换和交互， 生成 AT命令响应信息； 通过所述 AT通道返回所述 AT命令响应信息， 并关闭所述 AT通道。 所述的处理 AT命令的方法， 其中， 所述根据 AT通道申请信息开通 AT 通道的步 4聚之前还包括步 4聚： 调用 AT通道申请函数生成 AT通道申请信息。 所述的处理 AT命令的方法， 其中， 所述根据 AT通道申请信息开通 AT 通道的步 4聚包括以下步 4聚： 居 AT通道申请信息查询 AT通道的状态， 居 AT通道的状态选择开 通 AT通道。 所述的处理 AT命令的方法， 其中， 所述根据 AT通道申请信息开通 AT 通道的步 4聚还包括步 4聚： 初始化 AT通道上下文、 全局变量值和 AT命令緩存空间； 将 AT通道的通道号由关闭状态 AT通道列表转入使用状态 AT通道列表 中； 返回该 AT通道的通道号。 所述的处理 AT命令的方法， 其中， 通过所述 AT通道返回所述 AT命令 响应信息， 并关闭所述 AT通道的步 4聚还包括步 4聚： 检测确定所述 AT通道已使用完毕， 关闭所述 AT通道， 并清除该 AT通 道上下文； 将 AT通道的通道号从使用状态 AT通道列表转入关闭状态 AT通道列表 中。 本发明还提出一种处理 AT命令的系统， 其包括： 终端模块、 数据转换 模块、 以及协议栈控制模块， 所述数据转换模块分别与所述终端模块、 协议 栈控制模块连接， 用于对终端模块和协议栈控制模块之间交互的 AT命令数 据进行转换， 其中， 所述系统还包括 AT命令发送模块和 AT命令接收模块; 所述 AT命令发送模块， 用于接收终端模块的业务信息， 调用申请函数 向 AT命令接收模块发送 AT通道申请信息； 所述 AT命令接收模块， 根据 AT通道申请信息为 AT命令发送模块与 AT命令接收模块间开通传输 AT命令和 AT命令响应信息的 AT通道， 关闭 已使用完毕的 AT通道，向数据转换模块发送 AT命令和接收来自数据转换模 块的 AT命令响应信息。 所述的处理 AT命令的系统， 其中， 所述 AT命令接收模块包括 AT通道 队列管理模块； 所述 AT通道队列管理模块， 用于记录 AT通道的状态， 所述 AT命令接收模块根据该 AT通道的状态选择开通 AT通道。 所述的处理 AT命令的系统， 其中， 所述 AT通道队列管理模块设置有： 使用状态 AT通道列表和关闭状态 AT通道列表； 其中，所述使用状态 AT通道列表用于记录处于使用状态的 AT通道的通 道号； 所述关闭状态 AT通道列表用于记录处于关闭状态的 AT通道的通道号。 所述的处理 AT命令的系统， 其中， 所述 AT通道队列管理模块用于将所 述关闭的 AT通道的通道号由使用状态 AT通道列表转入关闭状态 AT通道列 表。 所述的处理 AT命令的系统， 其中， 所述通道队列管理模块用于所述开 通的 AT通道的通道号由关闭状态 AT通道列表转入使用状态 AT通道列表。 本发明所提供的一种处理 AT命令的装置、 方法及系统， 其系统在原有 系统的基础上， 增设申请 AT通道并发送 AT命令的 AT命令发送模块和提供 AT通道并将 AT命令发送至数据转换模块的 AT命令接收模块， 实现了并行 开通多个传输 AT命令的 AT通道， 以支持终端模块的多业务并发， 同时当业 务完成后关闭已使用完毕的 AT通道， 与现有技术相比节约了大量的通道资 源。 附图说明 图 1是本发明的处理 AT命令的装置示意图； 图 2是本发明的处理 AT命令的方法中开通 AT通道的流程图； 图 3是本发明的处理 AT命令的方法中关闭 AT通道的流程图； 图 4是本发明的处理 AT命令的方法流程图； 图 5是本发明的处理 AT命令的系统结构示意图。 下面结合附图对本发明的装置、 方法及系统的各较佳实施例进行更为详 细的 4笛述。 具体实施方式 本发明的处理 AT命令的装置可以为终端模块提供多个 AT通道，以实现 多业务并发， 如在打电话的同时还可以收发短信息， 同时在终端模块没有业 务交互或只有少数业务进行交互时， 本装置可以将已使用完毕的 AT通道关 闭， 以节约通道资源。 本发明的装置， 参见图 1 , 其包括 AT命令发送模块 10、 AT命令接收模块 20; 其中， 所述 AT命令发送模块 10用于接收来自终 端模块的业务信息， 如呼叫业务信息或短信息业务信息， 然后调用 AT命令 接收模块中的申请函数， 生成一个 AT通道申请信息， 并将该 AT通道申请信 息发送至 AT命令接收模块 20 , 向其申请 AT通道； 当 AT通道申请成功后， 该申请到的 AT通道向 AT命令接收模块 20传输 AT命令； 所述 AT命令接收模块 20包括 AT通道队列管理模块 21和 AT命令緩存 管理模块 22 ,其中，所述 AT通道队列管理模块 21用于记录 AT通道的状态， 所述 AT命令接收模块 20 居该 AT通道的状态选择开通 AT通道。 所述 AT 通道队列管理模块 21内设置有： 使用状态 AT通道列表和关闭状态 AT通道 列表； 其中， 所述使用状态 AT通道列表用于记录处于使用状态的 AT通道的 通道号；所述关闭状态 AT通道列表用于记录处于关闭状态的 AT通道的通道 号； 当 AT命令接收模块 20收到 AT通道申请信息后， 首先查询 AT通道队 列管理模块 21的关闭状态 AT通道列表中是否存在处于关闭状态的 AT通道， 若有， 则选择打开其中一个 AT通道， 并将该 AT通道的通道号从关闭状态通 道列表中转入使用状态 AT通道列表中， 然后调用其自身的申请函数， 获取 AT通道的通道号， 并将该通道号反馈给 AT命令发送模块 10, 所述 AT命令 发送模块 10收到该通道号后查找对应的 AT通道， 然后由该 AT通道向 AT 命令接收模块 20发送 AT命令； 若没有， 则向 AT通道发送模块 10反馈 AT 通道开通失败信息。 AT命令接收模块 20收到 AT命令后， 首先通过 AT命令緩存管理模块
22对该 AT命令进行保存， 然后通过数据转换模块将该 AT命令转换为协议 栈控制模块可以识别的 AT命令； 当数据转换模块将该 AT命令转换成功， 则 AT命令緩存管理模块将 AT命令删除， 以释放磁盘空间； 同时数据转换模块 将所述数据转换后的 AT命令发送至协议栈控制模块进行处理， 协议栈控制 模块处理完毕后再通过数据转换模块转换为 AT命令格式的 AT命令响应信 息， 再由数据转换模块反馈给 AT命令接收模块 20 , 最后再由 AT命令接收 模块 20通过 AT命令发送模块 10申请到的 AT通道传输给 AT命令发送模块 10。 此时， 本发明的装置为系统完成了一次业务交互， 业务交互完成后， AT 命令接收模块 20将 AT通道关闭； 然后通过 AT通道队列管理模块 21将该 AT通道的通道号从使用状态 AT通道列表中转入关闭状态 AT通道列表中。 本发明的装置， 当终端模块同时发起多起业务交互， 可以通过 AT命令 发送模块 10同时向 AT命令接模块 20申请多条 AT通道， 以便向 AT命令接 收模块 20同时传输多条 AT命令， 从而实现多业务并发交互， 同时当某一业 务交互完成， 可通过 AT通道队列管理模块 21 关闭该业务交互使用过的 AT 通道， 以节约 AT通道资源。 本发明的处理 AT命令的方法， 包括三个阶段， AT通道开通阶段、 AT 命令进行协议栈处理阶段、 AT通道关闭阶段， 其中， AT通道开通阶段和 AT 通道关闭阶段是本发明的核心发明点， 以下对其具体流程步 4聚进行详细的描 述；
AT通道开通阶段， 参见图 2, 其步骤如下： 步骤 Ll、 调用 AT通道申请函数， 生成 AT通道申请信息； 步骤 L2、 根据 AT通道申请信息， 查找是否存在处于关闭状态的 AT通 道， 若是， 则转入步骤 L3; 若否， 则转入步骤 L31; 步 4聚 L3、 选择开通一 AT通道， 并初始^ ^该 AT通道的 AT通道上下文， 全局变量值、 并设置 AT命令緩存空间； 步骤 L31、 反馈 AT通道开通失败信息， 流程结束； 步骤 L4、 将该 AT通道的通道号加入从关闭状态 AT通道列表转入使用 状态 AT通道列表中； 步骤 L5、 调用 AT通道申请函数获取， 并反馈该 AT通道的通道号； 步骤 L6、 居所述通道号查找对应的 AT通道， 并通过该 AT通道发送 AT命令。
AT通道关闭阶段， 参见图 3 , 其具体步骤如下： 步骤 Kl、 检查是否存在开通的已使用完毕的 AT通道， 若是， 转入步骤
K2; 若否， 则转入步骤 K21; 步骤 K2、 将该开通的已使用完毕的 AT通道关闭， 并清除 AT通道上下 文； 步骤 K21、 反馈 AT通道开通失败信息， 流程结束； 步骤 K3、 将该 AT通道的通道号从使用状态 AT通道列表转入关闭状态
AT通道列表中。 本发明的处理 AT命令的方法， 当终端模块有业务交互时， 通过申请函 数申请开通一个 AT通道， 并通过该 AT通道发送 AT命令， 当收到 AT命令 响应信息后则将关闭 AT通道； 如果当前已经有 AT命令正在等待响应， 系统 又收到一个 AT命令， 可以提供第二个 AT通道用以发送该 AT命令； 本发明 的方法， 当有多个业务需要交互时， 可以相互间竟争选择不同 AT通道进行 AT命令收发； 参见图 4, 其具体的流程步骤如下： 步骤 S l、 终端模块发起业务交互， 并生成业务信息； 步骤 S2、 根据业务信息生成 AT命令， 并调用 AT通道申请函数生成 AT 通道申请信息， 用以申请 AT通道； 步骤 S3、 根据 AT通道申请信息， 查询是否存在可用的处于关闭状态的 AT通道， 若是， 转入步骤 S4; 若否， 则转入步骤 S41 ; 步骤 S4、 选择开通一个 AT通道， 对该所选 AT通道进行初始化设置， 将开通的 AT通道的通道号从关闭状态 AT通道列表中转入使用状态 AT通道 列表中， 然后调用 AT通道申请函数， 获取该 AT通道的通道号， 并反馈该 AT通道的通道号； 所述 AT通道初始化设置包括： 全局变量值、 AT通道关系上下文、 AT 命令緩存空间； 步骤 S41、 反馈 AT通道开通失败信息， 流程结束； 步骤 S5、 才艮据 AT通道的通道号查找其对应的 AT通道， 并通过该 AT 通道传输 AT命令； 步骤 S6、 对所述 AT命令进行保存， 然后将该 AT命令转换成协议栈控 制模块可以识别的 AT命令，将 AT通道的通道号作为信息索引号加入该转换 后的 AT命令内， 并发送至协议栈控制模块； 在上述步骤 S6中， 该 AT命令转换成功后， 再将该 AT命令进行删除， 以释放磁盘空间。 步骤 S7、 AT命令通过协议栈控制模块处理后， 再进行数据转换， 生成 AT命令响应信息； 其中，所述 AT通道的通道号以信息索引号的形式原值保存在 AT命令响 应信息中； 用于查找该通道号对应的 AT通道； 步骤 S8、 居所述 AT命令响应信息查找到对应的 AT通道， 并通过该 对应的 AT通道反馈 AT命令响应信息； 当 AT命令响应信息中不存在对应的 AT通道的通道号信息时，则将所有 已开通的 AT通道的通道号加入到 AT命令响应信息中，即可以从已开通的任 一 AT通道反馈该 AT命令响应信息； 此时已完成了业务的交互， AT通道已使用完毕， 为了节约通道资源， 需 将该 AT通道关闭， 其步骤如下： 步骤 S9、 检查是否存在开通的已使用完毕的 AT通道， 若是， 则转入步 Ml S 11 ; 若否， 转入步 4聚 S 10; 步骤 S 10、 关闭该 AT通道， 清除该 AT通道状态参数， 撤销该 AT通道 上下文， 并将该 AT通道的通道号从使用状态 AT通道列表转入关闭状态 AT 通道列表中， 然后将反馈结果， 告知所述 AT通道已关闭， 流程结束； 步骤 S l l、 反馈错误原因信息， 流程结束； 当在所述步骤 S 1至 S 10之间终端模块又发起一条或多条业务信息时， 系统同步重复执行步骤 S 1至 S 10 , 但 AT通道与之前已被申请使用的 AT通 道不同， 即如假设第一条 AT命令为短信息业务命令， 发送到 AT通道后， 由 于某种原因 （如网络忙， 或者群发短信） 还没有收到响应， 此时又来了呼叫 业务的 AT命令， 则重新申请开通第二个 AT通道， 将呼叫业务相关 AT命令 由第二个 AT通道进行发送， 这样进行短信息业务同时不需等待短信息发送 完毕即可进行呼叫业务的交互。 其中， 所述 AT通道可以是物理串口、 MUX虚拟串口、 以及逻辑串口等 等， 本发明的方法， 即可实现多业务的并发， 又可在业务量少时， 关闭已使 用完毕 AT通道， 避免通道开通的太多造成通道资源的浪费， 保证了通道在 各业务间的重复使用， 提高了 AT命令的交互效率。 本发明的处理 AT命令的系统， 为实现既可多业务并发， 又可在业务不 多时关闭已使用完毕 AT 通道， 节约通道资源， 在原有的系统上增加了 AT 命令发送模块和 AT命令接收模块， 参见图 5 , 其包括： 终端模块 11、 AT命 令发送模块 12、 AT命令接收模块 13、数据转换模块 14 ,协议栈控制模块 15 , 其中， 所述 AT命令发送模块 12与所述终端模块 11、 以及 AT命令接收模块 13连接， 所述数据转换模块 14与所述 AT命令接收模块 13以及协议栈控制 模块 15连接； 所述终端模块 11用于向 AT命令发送模块 12发送业务信息； 所述 AT命令发送模块 12用于接收终端模块 11的业务信息，调用 AT命 令接收模块中的申请函数， 生成一个 AT通道申请信息， 然后将该 AT通道申 请信息发送至 AT命令接收模块 13 , 当 AT通道申请成功后， 将 AT命令通过 该申请到的 AT通道传输给 AT命令接收模块 13 ; 所述 AT命令接收模块 13根据所述 AT通道申请信息， 向 AT命令发送 模块 12与 AT命令接收模块 13之间提供用于传输 AT命令和 AT命令响应信 息的 AT通道； 并将 AT命令发送给数据转换模块 14和接收来自数据转换模 块 14的 AT命令响应信息； 所述 AT命令接收模块 13还包括 AT通道队列管理模块 131和 AT命令 緩存管理模块 132 ,所述 AT通道队列管理模块 131用于记录 AT通道的状态， 所述 AT命令接收模块 13 居该 AT通道的状态选择开通 AT通道。 所述 AT 通道队列管理模块 131 内设置有：使用状态 AT通道列表和关闭状态 AT通道 列表； 其中， 所述使用状态 AT通道列表用于记录处于使用状态的 AT通道的 通道号；所述关闭状态 AT通道列表用于记录处于关闭状态的 AT通道的通道 号； 当 AT命令接收模块 13收到 AT通道申请信息后， 首先查询关闭状态通 道列表中是否存在处于关闭状态的 AT通道， 若有， 则选择打开其中一个 AT 通道，并将该 AT通道的通道号从关闭状态通道列表中转入使用状态 AT通道 列表中， 然后调用其自身的申请函数， 获取 AT通道的通道号， 并将该通道 号反馈给 AT命令发送模块 12 , 所述 AT命令发送模块 12收到该通道号后查 找对应的 AT通道， 然后由该 AT通道向 AT命令接收模块 13发送 AT命令； 若 没有， 则向 AT命令发送模块 12反馈 AT通道开通失败信息。 所述 AT命令接收模块 13收到所述 AT命令后， 通过 AT命令緩存管理 模块 132将该 AT命令进行保存， 然后再调用数据转换模块 14对 AT命令进 行数据转换， 将其转换为协议栈控制模块 15可识别的 AT命令， 并将协议栈 控制模块 15处理后的 AT命令转换为 AT命令格式的 AT命令响应信息。 其中， 当数据转换模块 14对 AT命令转换成功后， AT命令緩存管理模 块 132将 AT命令进行删除， 以释放磁盘空间。 所述协议栈控制模块 15用于对通过数据转换模块 14进行转换后的 AT 命令进行处理， 该处理过程属于现有技术， 在此不再赘述。 本发明的系统 ,釆用在原系统的基础增设 AT命令发送模块和 AT命令接 收模块的方式， 实现动态创建传输 AT命令的 AT通道， 以实现多业务并发， 并可在业务交互完毕后， 关闭 AT通道， 以节约通道资源。 以上所述， 仅为本发明的较佳实施例而已， 并非用于限定本发明的保护 范围， 凡在本发明的精神和原则之内所作的任何修改、 等同替换和改进等， 均应包含在本发明的保护范围之内。

Claims

权 利 要 求 书
1. 一种处理 AT命令的装置， 其特征在于， 其包括： AT命令发送模块和 AT命令接收模块；
所述 AT命令发送模块， 用于接收来自终端模块的业务信息， 调 用申请函数向 AT命令接收模块发送 AT通道申请信息；
所述 AT命令接收模块， 根据所述 AT通道申请信息为所述 AT命 令发送模块与所述 AT命令接收模块之间开通传输 AT命令和接收 AT 命令响应信息的 AT通道， 关闭已使用完毕的 AT通道； 将 AT命令发 送至数据转换模块， 并接收来自所述数据转换模块的 AT命令响应信 息。
2. 根据权利要求 1所述的处理 AT命令的装置，其特征在于， 所述 AT命 令接收模块包括 AT通道队列管理模块； 所述 AT通道队列管理模块， 用于记录 AT通道的状态， 所述 AT命令接收模块 居该 AT通道的状 态选择开通 AT通道。
3. 根据权利要求 2所述的处理 AT命令的装置， 其特征在于， 所述 AT通 道队列管理模块设置有： 使用状态 AT通道列表和关闭状态 AT通道列 表；
其中，所述使用状态 AT通道列表用于记录处于使用状态的 AT通 道的通道号；
所述关闭状态 AT通道列表用于记录处于关闭状态的 AT通道的通 道号。
4. 根据权利要求 3所述的处理 AT命令的装置，其特征在于， 所述 AT通 道队列管理模块用于将所述关闭的 AT通道的通道号由使用状态 AT通 道列表转入关闭状态 AT通道列表。
5. 居权利要求 3所述的处理 AT命令的装置， 其特征在于， 所述通道 队列管理模块用于将所述开通的 AT通道的通道号由关闭状态 AT通道 列表转入使用状态 AT通道列表。
6. 根据权利要求 1-5中任一项所述的处理 AT命令的装置， 其特征在于， 所述 AT通道为多条。
7. —种处理 AT命令的方法， 其包括以下步 4聚：
根据 AT通道申请信息开通 AT通道；
通过所述 AT通道传输 AT命令， 并对所述 AT命令进行数据转换 和交互， 生成 AT命令响应信息；
通过所述 AT通道返回所述 AT命令响应信息， 并关闭所述 AT通 道。
8. 根据权利要求 7所述的处理 AT命令的方法， 其特征在于， 所述根据 AT通道申请信息开通 AT通道的步骤之前还包括步骤：
调用 AT通道申请函数生成 AT通道申请信息。
9. 根据权利要求 8所述的处理 AT命令的方法， 其特征在于， 所述根据 AT通道申请信息开通 AT通道的步骤包括以下步骤：
才艮据 AT通道申请信息查询 AT通道的状态， 艮据 AT通道的状态 选择开通 AT通道。
10. 根据权利要求 7、 8或 9所述的处理 AT命令的方法， 其特征在于， 所 述才艮据 AT通道申请信息开通 AT通道的步 4聚还包括步 4聚：
初始化 AT通道上下文、 全局变量值和 AT命令緩存空间； 将 AT通道的通道号由关闭状态 AT通道列表转入使用状态 AT通 道列表中；
返回该 AT通道的通道号。
11. 根据权利要求 10所述的处理 AT命令的方法， 其特征在于， 通过所述 AT通道返回所述 AT命令响应信息， 并关闭所述 AT通道的步骤还包 括步骤：
检测确定所述 AT通道已使用完毕， 关闭所述 AT通道， 并清除该 AT通道上下文；
将 AT通道的通道号从使用状态 AT通道列表转入关闭状态 AT通 道列表中。
12. 一种处理 AT 命令的系统， 其包括： 终端模块、 数据转换模块、 以及 协议栈控制模块， 其中， 所述数据转换模块分别与所述终端模块、 协 议栈控制模块连接，用于对终端模块和协议栈控制模块之间交互的 AT 命令数据进行转换， 其特征在于， 所述系统还包括 AT 命令发送模块 和 AT命令接收模块；
所述 AT命令发送模块， 用于接收终端模块的业务信息， 调用申 请函数向 AT命令接收模块发送 AT通道申请信息；
所述 AT命令接收模块， 根据 AT通道申请信息为 AT命令发送模 块与 AT命令接收模块间开通传输 AT命令和 AT命令响应信息的 AT 通道， 关闭已使用完毕的 AT通道， 向数据转换模块发送 AT命令和接 收来自数据转换模块的 AT命令响应信息。
13. 根据权利要求 12所述的处理 AT命令的系统， 其特征在于， 所述 AT 命令接收模块包括 AT通道队列管理模块；所述 AT通道队列管理模块， 用于记录 AT通道的状态， 所述 AT命令接收模块 居该 AT通道的状 态选择开通 AT通道。
14. 根据权利要求 13所述的处理 AT命令的系统， 其特征在于， 所述 AT 通道队列管理模块设置有： 使用状态 AT通道列表和关闭状态 AT通道 列表；
其中，所述使用状态 AT通道列表用于记录处于使用状态的 AT通 道的通道号；
所述关闭状态 AT通道列表用于记录处于关闭状态的 AT通道的通 道号。
15. 根据权利要求 14所述的处理 AT命令的系统， 其特征在于， 所述 AT 通道队列管理模块用于将所述关闭的 AT通道的通道号由使用状态 AT 通道列表转入关闭状态 AT通道列表。
16. 根据权利要求 14所述的处理 AT命令的系统， 其特征在于， 所述通道 队列管理模块用于所述开通的 AT通道的通道号由关闭状态 AT通道列 表转入使用状态 AT通道列表。
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