WO2015032048A1 - 一种移动终端内部通信方法 - Google Patents
一种移动终端内部通信方法 Download PDFInfo
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- WO2015032048A1 WO2015032048A1 PCT/CN2013/082985 CN2013082985W WO2015032048A1 WO 2015032048 A1 WO2015032048 A1 WO 2015032048A1 CN 2013082985 W CN2013082985 W CN 2013082985W WO 2015032048 A1 WO2015032048 A1 WO 2015032048A1
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- processing module
- data
- baseband processing
- application processing
- mobile terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
- H04B1/0028—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at baseband stage
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
Definitions
- the present invention relates to the field of internal communication technologies of mobile terminals, and in particular, to a method for internal communication of mobile terminals.
- the communication scheme of the AP+Modem is usually used for data transmission.
- the AP in the prior art generally refers to an application processor (Appl ication Processor s, an application processor, which is a very large-scale integrated circuit that extends audio and video functions and a dedicated interface based on a low-power CPU.
- the role of the application processor is to control Multiple function programs on the mobile communication terminal, such as shooting, music playback, video image playback, etc., to expand the functions of the traditional mobile phone, so as to get rid of the limitations of only making calls and sending and receiving text messages.
- Modem in the prior art generally refers to a baseband processor.
- the so-called baseband processor is equivalent to a protocol processor.
- the traditional baseband processor is mainly used as a control code for running the physical layer of the communication protocol, and controls the upper layer software of the communication protocol.
- the traditional AP+Modem communication method requires more connections when establishing a communication connection between the AP and the Modem. Usually, at least four signal transmission lines are used to perform a handshake mechanism, and then a connection is established.
- the Modem when the Modem intends to transmit data to the AP, it also needs at least four signal transmission lines to perform the handshake mechanism, and then establish a connection.
- Such a connection method requires more handshake mechanisms of the signal lines, occupies more chip PIN pins, and increases the power consumption of the system. In the process of establishing a connection between the AP and the Modem, the handshake time is longer. The rate of data transfer is limited.
- Chinese patent (CN103220822A) discloses a data transmission method, device and mobile terminal, and belongs to the field of terminal technology.
- the method includes: receiving, by the first terminal device, a data transmission instruction for transmitting a specified file; detecting a sound state of the first terminal device, and according to the sound The voice state generates the specified handshake information; the first terminal device sends the specified handshake information according to the specified file, so that the second terminal device and the first terminal device establish a data connection according to the specified handshake information; a data connection between the first terminal device and the second terminal device, and sending the specified file to the second terminal device.
- the handshake mechanism is not described in detail. Therefore, the above technical solutions cannot solve the problems existing in the prior art.
- the Chinese patent discloses a method for realizing an instant messaging handshake, and the mobile terminal realizes a handshake message between the instant communication client of the mobile terminal and the instant messaging application server by carrying the data packet of the control channel message of the wireless communication. Handshake between the instant messaging client and the instant messaging application server.
- the present invention also provides a system for implementing an instant messaging handshake. The above technical solution does not involve a specific signal transmission process of the handshake mechanism, and cannot solve the problems existing in the prior art. Summary of the invention
- a technical solution for an internal communication method of a mobile terminal specifically comprising:
- a mobile terminal internal communication method is applicable to a mobile terminal, wherein the mobile terminal is provided with an application processing module and a baseband processing module, and a control signal channel is disposed between the application processing module and the baseband processing module;
- the control signal channel is composed of a first signal channel, a second signal channel, and a feedback channel;
- the baseband processing module sends a second request signal for requesting to send data to the application processing module through the second signal channel; then the baseband processing module sends data to the application processing module.
- the mobile terminal internal communication method wherein the step of the application processing module transmitting data to the baseband processing module specifically includes:
- Step a the application processing module sends the first request signal to the baseband processing module by using the first signal channel;
- Step a2 the baseband processing module sends the feedback signal to the application processing module by using the feedback channel
- Step a3 the application processing module sends data to the baseband processing module; Step a4, the application processing module completes data transmission, and then exits.
- the mobile terminal internal communication method wherein, in the step al, the working state of the baseband processing module is first determined:
- Step al l determining whether the SDI0 interface of the baseband processing module is in an idle state
- step al2 If the SDI0 interface is in an idle state, then go to step al2;
- Step al2 determining whether the baseband processing module is in the receive data state; the baseband processing module is not in the receive data state, then proceeds to step al3;
- the application processing module waits for the baseband processing module to receive data, and then proceeds to step al3;
- Step al3 determining whether the baseband processing module is in a transmit data state; if the baseband processing module is not in a transmit data state, proceeding to the step al;
- the application processing module waits for the baseband processing module to transmit data, and then continues to perform the step al.
- the mobile terminal internal communication method, wherein, in the step a2, when the baseband processing module receives the first request signal, determining the working state of the baseband processing module:
- the baseband processing module waits for data transmission to complete, and then sends the feedback signal to the application processing module through the feedback channel; And if the baseband processing module is not in the sending data state, the baseband processing module directly sends the feedback signal to the application processing module by using the feedback channel.
- the mobile terminal internal communication method, wherein, in the step a4, when the application processing module sends data to the baseband processing module, the application processing module updates the working state to the sending data state.
- the mobile terminal internal communication method wherein, in the step a5, when the application processing module completes data transmission, the application processing module updates the working state to an idle state.
- the mobile terminal internal communication method wherein the step of receiving the data by the baseband processing module specifically includes:
- Step bl the baseband processing module reads the data sent by the application processing module by using a first data buffer area, and sends the feedback signal to the application processing module by using the feedback channel;
- Step b2 After waiting for the first data buffer area to read data, the baseband processing module reads data from the first data buffer domain;
- Step b3 determining whether the sending queue of the baseband processing module is empty; if the sending queue is not empty, the baseband processing module starts to send data; if the sending queue is empty, exiting.
- the mobile terminal internal communication method in the step bl, first determining whether the SDI0 interface of the baseband processing module is in an idle state:
- the SDI0 interface is in the idle state, continue to perform the step bl; if the SDI0 interface is not in the idle state, wait for the baseband processing module to send data, and then determine the SDI0 interface at this time. Whether the data can be read; if the SDI0 interface can read the data, continue to perform the step bl;
- the baseband processing module updates the operational status to the transmit data state and proceeds to step b3.
- the mobile terminal internal communication method, wherein, in the step b2, after waiting for the first data buffer area to read data, the baseband processing module updates the working status to the read data status, and Reading data in the first data buffer domain.
- the mobile terminal internal communication method wherein, in the step b2, the The baseband processing module uses a multiplexer to read data from the first data buffer domain.
- the mobile terminal internal communication method, wherein the step of the baseband processing module transmitting data to the application processing module specifically includes:
- Step cl the baseband processing module starts to send data to the application processing module;
- Step c2 the baseband processing module sends the second request signal to the application processing module by using the second signal channel;
- step c3 the baseband processing module sends the data and exits.
- the mobile terminal internal communication method wherein, in the step cl, first determining whether the bus is in an idle state:
- Step cl1 the baseband processing module sends data to a second data buffer area, and adapts the data to the encapsulation of the SDI0 interface;
- Step cl2 determining whether the bus is in an idle state
- step cl3 If the bus is not in an idle state, then go to step cl3;
- step cl If the bus is in the idle state, continue to perform the step cl;
- Step cl3 the baseband processing module suspends the second request signal to wait for the bus to be in an idle state
- Step cl4 when the bus is in an idle state, the step c1 is continued.
- the mobile terminal internal communication method wherein, in the step c2, the baseband processing module updates the working state to the sending data state while transmitting the second request signal.
- the mobile terminal internal communication method wherein, in the step c3, the step of determining whether the baseband processing module sends data exceeds a preset time interval comprises:
- Step c31 If the data sent by the baseband processing module does not exceed the preset time interval, the transmitted data is removed from the sending queue of the baseband processing module; and then proceeds to step c32;
- step c32 If the baseband processing module sends data beyond the preset time interval, then directly proceeds to step c32;
- Step c32 determining whether the sending queue is empty
- the mobile terminal internal communication method wherein, in the step c31, the baseband processing module updates the working status to a transmission completed state.
- the mobile terminal internal communication method in the step c3, updating the working state of the baseband processing module to an idle state.
- the mobile terminal internal communication method wherein the step of the application processing module receiving the data sent by the baseband processing module specifically includes:
- Step dl the application processing module starts to receive data
- step d2 the application processing module receives the data and exits.
- the mobile terminal internal communication method wherein, in the step dl, the application processing module updates the working status to the received data status.
- the mobile terminal internal communication method wherein when the baseband processing module receives data, a first detection mechanism is activated:
- the first detection mechanism specifically includes:
- the first detection mechanism specifically includes:
- Step el the SDIO interface receives a data packet
- Step e2 the SDIO interface detects the received data packet, and determines the detection result
- step e3 If the packet has an error, go to step e3 ;
- step e4 If there is no error in the data packet, go to step e4 ;
- Step e3 the baseband processing module discards the data packet in which the error occurs, and then returns to the step el;
- Step e4 the SDI0 interface determines whether the received data packet is the last data packet received by the data base
- step el is returned.
- the mobile terminal internal communication method wherein, in the step e4, the SDI0 interface sends, to the application processing module, corresponding data that requires an error to be retransmitted.
- the application processing module After receiving the first retransmission signal, the application processing module resends the corresponding data packet to the baseband processing module.
- the mobile terminal internal communication method wherein when the application processing module receives data, a second detection mechanism is activated;
- the second detection mechanism specifically includes:
- Step fl the application processing module receives the data packet
- Step f2 the application processing module detects the received data packet and determines the detection result
- step f3 If the packet has an error, go to step f3 ;
- step f5 If the packet does not have an error, proceed to step f5 ;
- Step f3 the application processing module sends, to the baseband processing module, a second retransmission signal for requesting retransmission of data;
- Step f4 after receiving the second retransmission signal, the baseband processing module resends the erroneous data packet to the application processing module; and then returns to the step fl;
- Step f5 the application processing module determines whether the received data packet is the last data packet received by the data
- step fl is returned.
- FIG. 1 is a schematic diagram showing the basic structure of an internal communication method of a mobile terminal in an embodiment of the present invention
- 2-3 is a schematic diagram of a process in which an AP sends data to a Modem end according to an embodiment of the present invention
- FIG. 4-5 are schematic diagrams of the process of receiving data by the modem end in the embodiment of the present invention
- FIG. 6-8 is a schematic diagram of a process of sending data to the AP end by the Modem end in the embodiment of the present invention
- FIG. 9 is a schematic flowchart of receiving data by an AP at an embodiment of the present invention.
- FIG. 10 is a schematic diagram of a process for verifying data at a modem end and requesting retransmission in an embodiment of the present invention;
- FIG. 11 is a flow chart showing the process of verifying data at the AP end and requesting retransmission in the embodiment of the present invention.
- FIG. 12 is a connection timing diagram of a communication connection between an AP end and a Modem end in an embodiment of the present invention
- FIG. 13 is a connection timing diagram of the AP end requesting retransmission of data in the embodiment of the present invention. detailed description
- the mobile terminal includes two parts: an application processing module (AP end) and a baseband processing module (Modem end).
- AP end application processing module
- Modem end baseband processing module
- a control signal channel for transmitting a connection signal is established between the AP end and the Modem end, and the control signal channel is composed of three sub-channels, which are a first signal channel, a second signal channel, and a feedback. aisle.
- the above three sub-channels are three independent hardware signal lines, that is, the core idea of the technical solution of the present invention is to complete the handshake between the AP and the Modem through three hardware signal lines to reduce chip pins and other hardware resources in the system. s expenses.
- the AP When the AP sends data to the Modem, the AP passes the first signal channel. Sending a first request signal for requesting transmission of data to the Modem end, and after receiving the signal and being ready for itself, the Modem terminal sends a feedback signal to the AP end to respond to the transmission data request through the feedback channel; after receiving the feedback signal, the AP end receives the feedback signal , that is, establish a connection with the Modem end, and send data to the Modem end through the data transmission line;
- the modem When the modem sends a data to the AP, the modem sends a second request signal requesting transmission of data to the AP through the second signal channel. Then, the modem connects to the AP and connects to the AP through the data transmission line. send data.
- the AP When the AP detects that an incorrect packet is received, the AP sends an retransmission signal (AP Resend) to the Modem through an additional retransmission channel.
- AP Resend an retransmission signal
- the specific steps of the AP sending data to the Modem end include:
- Step a the application processing module sends a first request signal to the baseband processing module through the first signal channel;
- Step a2 the baseband processing module sends a feedback signal to the application processing module through the feedback channel;
- the working state is first determined; if the Modem end is in the "sending" state, the
- the modem is transmitting data. At this point, the modem waits for the data to be sent, and then
- the AP sends the above feedback signal to indicate that it is ready.
- the Modem end If the Modem end is not in the transmit data state, the Modem end directly sends a feedback signal to the AP end through the feedback channel.
- Step a3 the application processing module sends data to the baseband processing module
- Step a4 the application processing module completes the data transmission, and then exits.
- the working status of the AP is updated to the idle state for the next data transmission or ready to receive.
- the working state of the baseband processing module is first determined before the first request signal is sent.
- the process of determining the working state of the baseband processing module specifically includes:
- the application processing module starts to send the data flow:
- Step al l determining whether the SDI0 interface of the baseband processing module is in an idle state; if the SDI0 interface is in an idle state, then proceeding to step al2;
- the SDI0 interface If the SDI0 interface is not in the idle state, it returns a signal to the application processing module requesting failure, and then exits;
- the SDI0 interface when the SDI0 interface is in the "ready" state, it is judged to be in an idle state; otherwise, the feedback signal requesting the connection failure is returned to the AP end, and then the flow of transmitting data is exited.
- Step al2 determining whether the baseband processing module is in a state of receiving data
- step al3 If the baseband processing module is not in the receive data state, then go to step al3;
- the application processing module waits for the baseband processing module to receive the data, and then proceeds to step al3;
- the Modem end if the Modem end is in the "receiving" state, it is judged that it is performing the operation of reading data. At this time, the AP end waits for the Modem end to read the data, and then performs the next operation.
- Step al3 determining whether the baseband processing module is in a transmit data state
- step al If the baseband processing module is not in the transmit data state, proceed to step al; if the baseband processing module is in the transmit data state, the application processing module waits for the baseband processing module to send the data, and then proceeds to step al.
- the AP waits for the modem to send data, and then performs the next operation.
- the process of reading data by the Modem end includes:
- Step bl the baseband processing module uses a first data buffer area to read data sent by the application processing module, and sends a feedback signal to the application processing module through the feedback channel.
- the first data buffer area Actually a read buffer.
- the modem sends a feedback signal to the AP through the feedback channel to indicate that the modem is ready to receive data.
- Step b2 after waiting for the first data buffer area to read the data, the baseband processing module reads the data from the first data buffer domain;
- the Modem end after waiting for the read buffer to receive data, the Modem end reads the data in the read buffer through a multiplexer (mux); at the same time, the Modem end updates its working status and reads Take the data status.
- a multiplexer multiplexer
- Step b3 Determine whether the sending queue of the baseband processing module is empty; if the sending queue is empty, exit.
- the process of transmitting data by the baseband processing module is started.
- the Modem terminal can only perform one of two operations of transmitting data and receiving data at the same time.
- the modem sends data and receives data conflicts the receiving data operation usually has a higher priority, so the sending data operation is suspended to wait for the receiving data operation to complete. At this time, if there is still data in the transmission queue, the transmission data operation is suspended, so the Modem end continues to execute the previously suspended transmission data operation after exiting the receiving data operation.
- the working state of the SDI0 interface is first determined:
- step bl If the SDI0 interface is in an idle state, proceed to step bl;
- the flow is as shown in FIG. 5. Shown as follows:
- Step bl l waiting for the SDI0 interface to send data
- the Modem end suspends the process and waits for the SDI0 interface to be converted into an idle state.
- the data reception may be activated by the end event of the data transmission action. Event to proceed to the next step.
- step bl If the data can be read, jump to the above step bl;
- step bl2 If the data has not been read yet, go to step bl2;
- Step bl2 updating the working state of the modem end itself to the sending data state, and And go to step b3 above to make a judgment on the transmission queue.
- the step of the baseband processing module sending data to the application processing module specifically includes:
- Step cl the baseband processing module starts to send data to the application processing module.
- the modem sends the data to be sent to dma (Direct Memory Access).
- Step c2 The baseband processing module sends a second request signal to the application processing module by using the second signal channel.
- the Modem end when the Modem end starts to transmit data to the dma, the Modem end sends a second request signal to the AP end to activate the AP end, and requests to send data to the AP end.
- step c2 when the Modem end sends the second request signal to the AP end, the Modem end updates its working status to the sending data status.
- step c3 the baseband processing module sends the data and exits.
- step cl before the modem starts to transmit data to the dma, it is first necessary to determine the working state of the transmission bus:
- Step cl l the baseband processing module sends the data to a second data buffer area, and adapts the data to the SDI0 interface package;
- the second data buffer area is a TX buffer (data transfer buffer).
- the Modem side copies the data to be sent to the TX buffer, and performs SDI0 interface encapsulation (SDIO Packet) on the above data.
- SDIO Packet SDI0 interface encapsulation
- Step cl2 determining whether the bus is in an idle state
- step cl3 if the bus is not in an idle state, then go to step cl3;
- Step cl3 the baseband processing module suspends the second request signal to wait for the bus to be in an idle state; Step c l4, when the bus is in an idle state, proceed to step cl.
- a preferred embodiment of the present invention is provided with a preset time interval for judging.
- the specific judgment steps include:
- Step c31 If the data sent by the baseband processing module does not exceed the preset time interval, the sent data is removed from the sending queue of the baseband processing module; then, the process proceeds to step c32;
- step c32 If the baseband processing module sends data beyond a preset time interval, then directly go to step c32;
- the data packets to be sent are temporarily stored in a sending queue of the Modem; if the Modem sends a data packet within a preset time interval, the data packet is sent from the sending queue. Clear to avoid repeated transmissions.
- the modem operates to update the data in the transmit queue to the idle state.
- Step c32 determining whether the sending queue is empty
- step c l If the sending queue is not empty, it indicates that there is still data to be sent at the modem end within the acceptable sending time range. Therefore, return to step c l to continue sending data.
- the step of the application processing module receiving the data specifically includes:
- Step dl the application processing module starts to receive data
- the AP end when the AP end starts receiving data, the AP end updates its working state to the received data state, and reads data from the dma.
- step d2 the application processing module receives the data and exits.
- the AP after the AP receives the data, it updates its working status to the idle state and exits.
- a data retransmission mechanism is provided when the AP side finds a data transmission error and the Modem side finds a data transmission error.
- the data retransmission mechanism at the modem end is defined as the first detection mechanism
- the data retransmission mechanism at the AP end is defined as the second detection mechanism
- the first detection mechanism specifically includes:
- Step el the SDI0 interface receives the data packet
- Step e2 the SDI0 interface detects the received data packet, and judges the detection result:
- step e3 If the packet has an error, go to step e3 ;
- step e4 If there is no error in the data packet, go to step e4 ;
- the SDI0 interface when it detects an error in the data packet, it sends a corresponding notification signal to the Modem terminal.
- the Modem side does not need to react to the notification signal, only need to discard the packet with the error.
- Step e3 the baseband processing module discards the data packet in which the error occurred, and then returns to step el;
- Step e4 the SDI0 interface determines whether the received data packet is the last data packet received by the current data
- step el If the received data packet is not the last data packet received this time, return to step el.
- the SDI0 interface sends a notification signal to the modem end, and sends a first retransmission signal to the AP end requesting retransmission of the errored data packet; the AP end receives the first weight After the signal is transmitted, the corresponding data packet is resent to the Modem.
- the second detection mechanism is specifically packaged. Includes:
- Step fl the application processing module receives the data packet
- Step f2 the application processing module detects the received data packet and determines the detection result
- step f3 If the packet has an error, go to step f3 ;
- step f5 If there is no error in the data packet, go to step f5 ;
- the module responsible for detecting whether the data packet is faulty is the AP end.
- Step f3 the application processing module sends a second retransmission signal for requesting retransmission of data to the baseband processing module;
- Step f4 after receiving the second retransmission signal, the baseband processing module resends the errored data packet to the application processing module; and then returns to step fl ;
- Step f5 the application processing module determines whether the received data packet is the last data packet received by the current data
- the process returns to step fl.
- the first detection mechanism and the second detection mechanism respectively pass the check header of the data packet (in the preferred embodiment of the present invention, the data may be several bits on the data packet header) ) to determine if there is an error in the transmission of the packet.
- the interrupted manner may be used to determine that the AP end receives the data:
- the controller of the SDI0 interface on the Modem will generate an interrupt.
- the Modem end determines whether the data has been sent in combination with the amount of data taken by the AP and the AP.
- the AP when the AP sends data to the Modem, the AP first sends a first request signal (AP Rts) to the Modem through the first signal channel to request and The Modem establishes a connection and sends data.
- AP Rts first request signal
- the level indicates that AP Rts is valid, and the low level indicates that AP Rts is invalid.
- Modem Rdy a feedback signal
- the SDIO Clock is the system clock of the SDI0 interface when transmitting data on the AP side.
- the Modem end when the Modem end sends data to the AP end, the Modem end sends a second request signal (Modem Rts) to the AP end through the second signal channel, and then the AP end. Establish a connection and send a signal to the AP.
- Modem Rts a second request signal
- the SDIO Clock is the system clock of the SDI0 interface when the AP receives data.
- Figure 13 completely shows the conflict resolution mechanism when the communication connection between the AP and Modem ends.
- Modem Rts is active low; AP Rts is active high; Modem Rdy is active low.
- ⁇ 2- ⁇ is the duration of sending the second request signal (Modem Rts) to the Modem end.
- T2-T1 20ms o
- the AP end and the Modem end simultaneously initiate a request signal ( AP Rts and Modem Rts).
- Modem Rts is executed first, so the first request signal (AP Rts ) at the AP end is suspended.
- AP Rts begins to respond (ie Modem Rdy).
- AP Rts is continuously sent until time T4 (T4-T3 ⁇ 20ms). At this time, a delay time (T5-T4 ⁇ lms) is passed, Modem Rdy becomes invalid; after a delay time (T6_T5 ⁇ lms), the Modem end again
- the AP sends Modem Rts; after a duration (T7_T6 ⁇ 20ms), Modem Rts is invalid; after a delay time (T8_T7 ⁇ lms), AP Rts starts to be valid; after a delay time (T9_T8 ⁇ lms), Modem Rdy starts. Effective, and so on.
- FIG. 14 adds the retransmission mechanism of the AP end (that is, the second detection mechanism described above) on the basis of FIG. 13, which specifically includes:
- the AP end After the Modem Rts is invalid, after a delay time (T3-T2), if the AP end detects When an error occurs in the received data packet, the AP sends a second retransmission signal (AP Resend) to the Modem.
- the AP Resend is valid at a high level, that is, from the AP end.
- the packet transmission error AP crc err
- the AP sends the AP Resend to the Modem until the AP receives the packet (AP Receive 0K).
- the duration of the above AP crc err is T3-T8.
- the modem end since the modem end does not need to respond to the error of the data packet, only the data packet in which the error occurs may be discarded. Therefore, the first detection mechanism of the modem end is not dedicated. Timing description.
- any technical features that can be selected including durations of various signals and delay times, etc., are included only in the preferred embodiments of the present invention, and are not thus protected by the present invention. range.
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Abstract
本发明公开了一种移动终端内部通信方法,属于移动终端内部通信领域,其中应用处理模块与基带处理模块之间的控制信号通道由一第一信号通道、一第二信号通道以及一反馈通道组成;应用处理模块通过第一信号通道向基带处理模块发送第一请求信号,并通过反馈通道接收由基带处理模块发送的反馈信号;应用处理模块接收到反馈信号后,向基带处理模块发送数据;基带处理模块通过第二信号通道向应用处理模块发送第二请求信号;随后基带处理模块向应用处理模块发送数据。上述技术方案的有益效果是:节省了系统的硬件资源,降低了系统的功耗,缩短了通信连接过程,提高了数据传输的速率;同时加入了数据重传机制,保证了数据传输的安全性和可靠性。
Description
一种移动终端内部通信方法 技术领域
本发明涉及移动终端内部通信技术领域,尤其涉及一种移动终端 内部通信方法。 龍
现有技术中的移动通信终端, 其内部通常采用 AP+Modem的通信 方案来进行数据传输。
现有技术中的 AP通常指应用处理器(Appl ication Processor s 所谓应用处理器,是在低功耗 CPU的基础上扩展音视频功能和专用接 口的超大规模集成电路。应用处理器的作用在于控制移动通信终端上 的多个功能程序, 例如拍摄、 音乐播放、 视频图像播放等, 以扩展传 统手机的功能, 使其摆脱只能拨打电话和收发短信的局限。
现有技术中的 Modem通常指基带处理器。所谓基带处理器, 相当 于一个协议处理器。传统的基带处理器主要作为运行通信协议物理层 的控制码, 同时控制通信协议的上层软件。
传统的 AP+Modem通信方法,在 AP和 Modem之间建立通信连接时, 需要较多的连线, 通常采用至少四根信号传输线来进行握手机制, 随 后建立连接。
同样的, 当 Modem拟向 AP传输数据时, 也需要至少四根信号传 输线来进行握手机制, 随后建立连接。这样的连接方式需要较多信号 线的握手机制, 占用了较多的芯片 PIN脚,同时增大了系统的功耗, 在 AP和 Modem建立连接的过程中, 也会由于握手时间较长而使数据 传输的速率受到限制。
中国专利(CN103220822A)公开了一种数据传输方法、 装置和移 动终端, 属于终端技术领域。 方法包括: 第一终端设备接收用于传输 指定文件的数据传输指令; 检测第一终端设备的声音状态, 并根据声
音状态生成指定握手信息;所述第一终端设备根据所述指定文件发送 所述指定握手信息,使得所述第二终端设备和所述第一终端设备根据 所述指定握手信息建立数据连接;通过第一终端设备与第二终端设备 之间的数据连接, 向第二终端设备发送指定文件。上述技术方案虽然 提到了握手机制, 但对该握手机制并未做详细的描述。 因此, 上述技 术方案并不能解决现有技术中存在的问题。
中国专利(CN102264045A)公开了一种实现即时通讯握手的方法, 移动终端通过在无线通讯的控制信道消息的数据包中携带移动终端 的即时通信客户端和即时通讯应用服务器之间的握手消息,实现即时 通信客户端和即时通讯应用服务器之间的握手。本发明还提供了一种 实现即时通讯握手的系统。上述技术方案并未涉及到握手机制的具体 信号传输过程, 无法解决现有技术中存在的问题。 发明内容
根据现有技术中存在的缺陷, 即 AP和 Modem之间的信号连接线 较多, 从而导致通信连接的时间较长, 影响传输速率, 同时耗费了硬 件资源, 增大了系统功耗; 现提供一种移动终端内部通信方法的技术 方案, 具体包括:
一种移动终端内部通信方法, 适用于移动终端, 所述移动终端内 设置有应用处理模块和基带处理模块,所述应用处理模块和基带处理 模块之间设有一控制信号通道;
其中, 所述控制信号通道由一第一信号通道、一第二信号通道以 及一反馈通道组成;
所述应用处理模块通过所述第一信号通道向所述基带处理模块 发送用以请求发送数据的第一请求信号,并通过所述反馈通道接收由 所述基带处理模块发送的用以准备接收数据的反馈信号;所述应用处 理模块接收到所述反馈信号后, 向所述基带处理模块发送数据;
所述基带处理模块通过所述第二信号通道向所述应用处理模块 发送用以请求发送数据的第二请求信号;随后所述基带处理模块向所 述应用处理模块发送数据。
优选的, 该移动终端内部通信方法, 其中, 所述应用处理模块向 所述基带处理模块发送数据的步骤具体包括:
步骤 al, 所述应用处理模块通过所述第一信号通道向所述基带 处理模块发送所述第一请求信号;
步骤 a2, 所述基带处理模块通过所述反馈通道向所述应用处理 模块发送所述反馈信号;
步骤 a3, 所述应用处理模块向所述基带处理模块发送数据; 步骤 a4, 所述应用处理模块完成数据发送, 随后退出。
优选的, 该移动终端内部通信方法, 其中, 所述步骤 al中, 首 先判断所述基带处理模块的工作状态:
步骤 al l , 判断所述基带处理模块的 SDI0接口是否处于空闲状 态;
若所述 SDI0接口处于空闲状态, 则转至步骤 al2;
若所述 SDI0接口未处于所述空闲状态, 则返回给所述应用处理 模块请求失败的信号, 随后退出;
步骤 al2, 判断所述基带处理模块是否处于接收数据状态; 所述基带处理模块未处于接收数据状态, 则转至步骤 al3;
若所述基带处理模块处于所述接收数据状态,则所述应用处理模 块等待所述基带处理模块接收数据完毕, 随后转至步骤 al3;
步骤 al3, 判断所述基带处理模块是否处于发送数据状态; 若所述基带处理模块未处于发送数据状态,则继续执行所述步骤 al ;
若所述基带处理模块处于所述发送数据状态,则所述应用处理模 块等待所述基带处理模块发送数据完毕, 随后继续执行所述步骤 al。
优选的, 该移动终端内部通信方法, 其中, 所述步骤 a2中, 当 所述基带处理模块收到所述第一请求信号后,判断所述基带处理模块 的工作状态:
若所述基带处理模块处于发送数据状态,则所述基带处理模块等 待数据发送完毕,随后通过所述反馈通道向所述应用处理模块发送所 述反馈信号;
若所述基带处理模块未处于所述发送数据状态,则所述基带处理 模块直接通过所述反馈通道向所述应用处理模块发送所述反馈信号。
优选的, 该移动终端内部通信方法, 其中, 所述步骤 a4中, 在 所述应用处理模块向所述基带处理模块发送数据时,所述应用处理模 块将工作状态更新为发送数据状态。
优选的, 该移动终端内部通信方法, 其中, 所述步骤 a5中, 当 所述应用处理模块完成数据发送时,所述应用处理模块将工作状态更 新为空闲状态。
优选的, 该移动终端内部通信方法, 其中, 所述基带处理模块接 收数据的步骤具体包括:
步骤 bl, 所述基带处理模块采用一第一数据缓冲区域读取所述 应用处理模块发送的数据,并通过所述反馈通道向所述应用处理模块 发送所述反馈信号;
步骤 b2, 等待所述第一数据缓冲区域读取数据完毕后, 所述基 带处理模块从所述第一数据缓冲区域中读取数据;
步骤 b3, 判断所述基带处理模块的发送队列是否为空; 若所述发送队列不为空, 则所述基带处理模块开始发送数据; 若所述发送队列为空, 则退出。
优选的, 该移动终端内部通信方法, 其中, 所述步骤 bl中, 首 先判断所述基带处理模块的 SDI0接口是否处于空闲状态:
若所述 SDI0接口处于所述空闲状态, 则继续执行所述步骤 bl ; 若所述 SDI0接口未处于所述空闲状态, 则等待所述基带处理模 块发送数据完毕, 随后判断此时所述 SDI0接口是否可以读取数据; 若所述 SDI0接口能够读取数据, 则继续执行所述步骤 bl ;
若所述 SDI0接口不能读取数据, 则所述基带处理模块将工作状 态更新为发送数据状态, 并转至所述步骤 b3。
优选的, 该移动终端内部通信方法, 其中, 所述步骤 b2中, 等 待所述第一数据缓冲区域读取数据完毕后,所述基带处理模块将工作 状态更新为读取数据状态, 并从所述第一数据缓冲区域中读取数据。
优选的, 该移动终端内部通信方法, 其中, 所述步骤 b2中, 所
述基带处理模块采用一复用器从所述第一数据缓冲区域中读取数据。 优选的, 该移动终端内部通信方法, 其中, 所述基带处理模块向 所述应用处理模块发送数据的步骤具体包括:
步骤 cl, 所述基带处理模块开始向所述应用处理模块发送数据; 步骤 c2, 所述基带处理模块通过所述第二信号通道向所述应用 处理模块发送所述第二请求信号;
步骤 c3, 所述基带处理模块发送数据完毕, 并退出。
优选的, 该移动终端内部通信方法, 其中, 所述步骤 cl中, 首 先判断总线是否处于空闲状态:
步骤 cl 1,所述基带处理模块将数据发送至一第二数据缓冲区域, 并对数据进行适配所述 SDI0接口的封装;
步骤 cl2, 判断所述总线是否处于空闲状态;
若所述总线未处于空闲状态, 则转至步骤 cl3;
若所述总线处于所述空闲状态, 则继续执行所述步骤 cl ;
步骤 cl3, 所述基带处理模块将所述第二请求信号挂起, 以等待 所述总线处于空闲状态;
步骤 cl4,当所述总线处于空闲状态时,则继续执行所述步骤 c l。 优选的, 该移动终端内部通信方法, 其中, 所述步骤 c2中, 所 述基带处理模块发送所述第二请求信号的同时将工作状态更新为发 送数据状态。
优选的, 该移动终端内部通信方法, 其中, 所述步骤 c3中, 判 断所述基带处理模块发送数据是否超出一预设的时间间隔的步骤具 体包括:
步骤 c31, 若所述基带处理模块发送数据未超出所述预设的时间 间隔, 则将已发送的数据从所述基带处理模块的发送队列中去除; 随 后转至步骤 c32 ;
若所述基带处理模块发送数据超出所述预设的时间间隔,则直接 转至所述步骤 c32;
步骤 c32, 判断所述发送队列是否为空;
若所述发送队列不为空, 则返回至所述步骤 cl ;
优选的, 该移动终端内部通信方法, 其中, 所述步骤 c31中, 所 述基带处理模块将工作状态更新为发送完毕状态。
优选的, 该移动终端内部通信方法, 其中, 所述步骤 c3中, 将 所述基带处理模块的工作状态更新为空闲状态。
优选的, 该移动终端内部通信方法, 其中, 所述应用处理模块接 收所述基带处理模块发送的数据的步骤具体包括:
步骤 dl, 所述应用处理模块开始接收数据;
步骤 d2, 所述应用处理模块接收数据完毕, 并退出。
优选的, 该移动终端内部通信方法, 其中, 所述步骤 dl中, 所 述应用处理模块将工作状态更新为接收数据状态。
优选的, 该移动终端内部通信方法, 其中, 当所述基带处理模块 接收数据时, 启动一第一检测机制:
所述第一检测机制具体包括:
所述第一检测机制具体包括:
步骤 el, 所述 SDIO接口接收数据包;
步骤 e2, 所述 SDIO接口对接收到的所述数据包进行检测, 并 对所述检测结果进行判断;
若数据包发生错误, 则转至步骤 e3;
若数据包未发生错误, 则转至步骤 e4;
步骤 e3, 所述基带处理模块丢弃发生错误的数据包, 随后返回 所述步骤 el ;
步骤 e4, 所述 SDI0接口判断接收到的所述数据包是否为本次数 据接收的最后一个数据包;
若接收的所述数据包是本次数据接收的最后一个数据包, 则退 出;
若接收的所述数据包不是本次数据接收的最后一个数据包,则返 回所述步骤 el。
优选的, 该移动终端内部通信方法, 其中, 所述步骤 e4中, 所 述 SDI0接口向所述应用处理模块发送要求重传发生错误的相应数据
包的第一重传信号;
所述应用处理模块接收到所述第一重传信号后,重新向所述基带 处理模块发送相应的所述数据包。
优选的, 该移动终端内部通信方法, 其中, 当所述应用处理模块 接收数据时, 启动一第二检测机制;
所述第二检测机制具体包括:
步骤 fl, 所述应用处理模块接收数据包;
步骤 f2, 所述应用处理模块对接收到的所述数据包进行检测并 对所述检测结果进行判断;
若所述数据包发生错误, 则转至步骤 f3;
若所述数据包未发生错误, 则转至步骤 f5;
步骤 f3, 所述应用处理模块向所述基带处理模块发送用以请求 重新传输数据的第二重传信号;
步骤 f4, 所述基带处理模块接收到所述第二重传信号后, 将发 生错误的数据包重新发送给所述应用处理模块; 随后返回所述步骤 fl ;
步骤 f5, 所述应用处理模块判断接收到的所述数据包是否为本 次数据接收的最后一个数据包;
若接收的所述数据包是本次数据接收的最后一个数据包, 则退 出;
若接收的所述数据包不是本次数据接收的最后一个数据包,则返 回所述步骤 fl。 上述技术方案的有益效果是:
1 ) 减少了通信时的连接线, 相应减少了芯片的连接引脚, 节 省了系统的硬件资源;
2 ) 减少了通信时的连接线, 相应降低了系统的功耗;
3 ) 减少了通信时的连接线, 缩短了整个通信连接过程, 提升 了数据传输的速率;
4) 加入了数据重传判断以及重传请求的过程, 增加了数据传
输的安全性和可靠性。 附图说明
图 1是本发明的实施例中,移动终端内部通信方法的基础结构示 意图;
图 2-3是本发明的实施例中, AP端向 Modem端发送数据的流程 示意图;
图 4-5是本发明的实施例中, Modem端接收数据的流程示意图; 图 6-8是本发明的实施例中, Modem端向 AP端发送数据的流程 示意图;
图 9是本发明的实施例中, AP端接收数据的流程示意图; 图 10是本发明的实施例中, Modem端校验数据并请求重传的流 程示意图;
图 1 1是本发明的实施例中, AP端校验数据并请求重传的流程示 意图;
图 12是本发明的实施例中, AP端和 Modem端之间通信连接时的 连接时序图;
图 13是本发明的实施例中, AP端请求重传数据的连接时序图。 具体实施方式
下面结合附图和具体实施例对本发明作进一步说明,但不作为本 发明的限定。
如图 1所示, 移动终端内部包括了应用处理模块 (AP端) 和基 带处理模块 (Modem端) 两个部分。 本发明的实施例中, 在 AP端和 Modem端之间建立一用于传输连接信号的控制信号通道, 该控制信号 通道由三条子通道组成, 分别为第一信号通道、第二信号通道和反馈 通道。上述的三条子通道为三条相互独立的硬件信号线, 即本发明的 技术方案的核心思想是, 通过三条硬件信号线完成 AP与 Modem之间 的握手, 以减少系统中芯片引脚和其他硬件资源的开销。
当 AP端拟向 Modem端发送数据时, AP端通过上述第一信号通道
发送请求传输数据的第一请求信号至 Modem端, Modem端接收到该信 号且自身已准备就绪后, 通过上述反馈通道向 AP端发送响应传输数 据请求的反馈信号; AP端接收到该反馈信号后, 即与 Modem端建立 连接, 并通过数据传输线路向 Modem端发送数据;
当 Modem端拟向 AP端发送数据时, Modem端通过上述第二信号 通道发送请求传输数据的第二请求信号至 AP端; 随后, Modem端与 AP端建立连接, 并通过数据传输线路向 AP端发送数据。
当 AP端发现接收到错误的数据包时, AP端通过一个额外的重传 通道发送一个重传信号 (AP Resend ) 至 Modem端
上文为对本说明书中所记载的技术方案做一个较为简略的概括。 下面对该技术方案进行具体的描述。
如图 2所示, 本发明的一个较佳的实施例中, AP端向 Modem端 发送数据的具体步骤包括:
步骤 al, 应用处理模块通过第一信号通道向基带处理模块发送 第一请求信号;
步骤 a2, 基带处理模块通过反馈通道向应用处理模块发送反馈 信号;
本发明的较佳的实施例中, 在 Modem端发送反馈信号前, 首先判 断其工作状态; 若此时 Modem端正处于 " sending "状态, 即认为该
Modem端正在发送数据, 此时 Modem端等待其发送数据完毕后, 再向
AP端发送上述反馈信号, 以表示准备就绪。
若 Modem端未处于发送数据状态,则 Modem端直接通过所述反馈 通道向 AP端发送反馈信号。
步骤 a3, 应用处理模块向基带处理模块发送数据;
步骤 a4, 应用处理模块完成数据发送, 随后退出。
本发明的较佳的实施例中, 当 AP端发送数据完毕后, 将自身的 工作状态更新为空闲状态, 以进行下一次数据发送或者准备接收
Modem端发送的数据。
具体而言, 本发明的较佳的实施例中, 上述步骤 al中, 在发送 第一请求信号前, 首先判断基带处理模块的工作状态。 如图 3所示,
判断基带处理模块的工作状态的流程具体包括:
应用处理模块开始发送数据流程:
步骤 al l , 判断基带处理模块的 SDI0接口是否处于空闲状态; 若 SDI0接口处于空闲状态, 则转至步骤 al2;
若 SDI0接口未处于空闲状态, 则返回给应用处理模块请求失败 的信号, 随后退出;
本发明的较佳的实施例中, 当 SDI0接口为 "ready"状态时, 判 断其处于空闲状态; 反之, 向 AP端返回请求连接失败的反馈信号, 随后退出发送数据的流程。
步骤 al2, 判断基带处理模块是否处于接收数据状态;
基带处理模块未处于接收数据状态, 则转至步骤 al3;
若基带处理模块正处于接收数据状态,则应用处理模块等待基带 处理模块接收数据完毕, 随后转至步骤 al3;
本发明的较佳的实施例中, 若 Modem端处于 "receiving"状态 时, 判断其正在进行读取数据的操作, 此时 AP端等待 Modem端读取 数据完毕, 再进行下一步操作。
步骤 al3, 判断基带处理模块是否处于发送数据状态;
若基带处理模块未处于发送数据状态, 则继续执行步骤 al ; 若基带处理模块正处于发送数据状态,则应用处理模块等待基带 处理模块发送数据完毕, 随后继续执行步骤 al。
本发明的较佳的实施例中, 若 Modem端处于 " sending "状态时, 判断其正在进行发送数据的操作, 此时 AP端等待 Modem端发送数据 完毕, 再进行下一步操作。
如图 4所示, 本发明的较佳的实施例中, 当 AP端向 Modem端发 送数据后, Modem端响应的读取数据的流程包括:
步骤 bl, 基带处理模块采用一第一数据缓冲区域读取应用处理 模块发送的数据, 并通过反馈通道向应用处理模块发送反馈信号; 本发明的较佳的实施例中,上述第一数据缓冲区域实际为一个读 出缓冲区 (read buffer )。 随后 Modem端通过反馈通道向 AP端发送 反馈信号, 以表示 Modem端已经准备好接收数据。
步骤 b2, 等待第一数据缓冲区域读取数据完毕后, 基带处理模 块从第一数据缓冲区域中读取数据;
本发明的较佳的实施例中, Modem端等待上述 read buffer接收 数据完毕后, 通过一个多路复用器 (mux ) 读取 read buffer中的数 据; 同时 Modem端将自身的工作状态更新后读取数据状态。
步骤 b3, 判断基带处理模块的发送队列是否为空; 若发送队列 为空, 则退出。
本发明的较佳的实施例中, 若上述发送队列不为空, 则开始执行 基带处理模块发送数据的过程。
本发明的较佳的实施例中,由于 Modem端在同一时间只能进行发 送数据和接收数据这两种操作中的一种。当 Modem端发送数据和接收 数据产生冲突时, 通常接收数据操作的优先级较高, 因此会将发送数 据操作挂起,以等待接收数据操作完成。此时若发送队列中还有数据, 则说明发送数据操作被挂起, 所以 Modem端在退出接收数据操作之 后, 继续执行此前被挂起的发送数据操作。
本发明的较佳的实施例中, 上述步骤 bl中, 在基带处理模块开 始读取数据之前, 首先对 SDI0接口的工作状态进行判断:
若 SDI0接口处于空闲状态, 则继续执行步骤 bl ;
若 SDI0接口未处于空闲状态 (由于位于 Modem端接收数据的流 程中, 因此本发明的较佳的实施例中, 未处于空闲状态的含义即指 SDI0接口处于发送数据状态), 则流程如图 5所示:
步骤 bl l, 等待 SDI0接口发送数据完毕;
本发明的较佳的实施例中, 此时 Modem端将流程挂起, 并等待 SDI0接口转换成空闲状态; 当 Modem端的数据发送动作结束, 即可 以以该数据发送动作的结束事件来激活数据接收事件,以继续执行下 一步操作。
随后开始判断 SDI0接口是否能够读取数据;
若能够读取数据, 则跳转至上述步骤 bl ;
若尚未能够读取数据, 则跳转至步骤 bl2;
步骤 bl2, 将 Modem端自身的工作状态更新为发送数据状态, 并
且转至上述步骤 b3, 以进行对发送队列的判断。
如图 6所示, 本发明的较佳的实施例中, 基带处理模块向应用处 理模块发送数据的步骤具体包括:
步骤 cl, 基带处理模块开始向应用处理模块发送数据; 本发明的较佳的实施例中, Modem 端将要发送的数据送入 dma (Direct Memory Access , 直接内存存取) 中。
步骤 c2, 基带处理模块通过第二信号通道向应用处理模块发送 第二请求信号;
本发明的较佳的实施例中, 当 Modem端开始向 dma传输数据时, Modem端向 AP端发送第二请求信号, 以激活 AP端, 并请求向 AP端 发送数据。
本发明的较佳的实施例中, 在上述步骤 c2中, 当 Modem端向 AP 端发送第二请求信号的同时, Modem端将自身的工作状态更新为发送 数据状态。
步骤 c3, 基带处理模块发送数据完毕, 并退出。
如图 7所示,本发明的较佳的实施例中,上述步骤 cl中,在 Modem 端开始向 dma传输数据之前,首先需要对传输总线的工作状态进行相 应的判断:
步骤 cl l , 基带处理模块将数据发送至一第二数据缓冲区域, 并 对数据进行适配 SDI0接口的封装;
本发明的较佳的实施例中, 上述第二数据缓冲区域为 TX buffer (数据传输缓冲区) 。 Modem端将需要发送的数据复制到 TX buffer 中, 并对上述数据进行 SDI0接口封装 (SDIO Packet ) 。
步骤 cl2, 判断总线是否处于空闲状态;
本发明的较佳的实施例中, 若总线未处于空闲状态, 则转至步骤 cl3 ;
若总线处于空闲状态, 则继续执行上述步骤 c l (即 Modem端开 始向 dma发送数据) 。
步骤 cl3, 基带处理模块将第二请求信号挂起, 以等待总线处于 空闲状态;
步骤 c l4, 当总线处于空闲状态时, 则继续执行步骤 c l。
如图 8所示, 上述步骤 c3中, 为了避免 Modem端发送数据时间 过长而长时间堵塞整个数据传输线路,本发明的较佳的实施例中设置 有一个预设的时间间隔, 用以判断 Modem端发送数据的时间, 具体的 判断步骤包括:
步骤 c31, 若基带处理模块发送数据未超出预设的时间间隔, 则 将已发送的数据从基带处理模块的发送队列中去除; 随后转至步骤 c32 ;
若基带处理模块发送数据超出了一预设的时间间隔,则直接转至 步骤 c32 ;
本发明的较佳的实施例中,待发送的数据包均暂存在 Modem端的 一个发送队列中;若在预设的时间间隔内, Modem发送了一个数据包, 则该数据包被从发送队列中清除, 以避免重复发送。
本发明的较佳的实施例中,在 Modem端清除发送队列中的数据的 同时, 将自身的工作状态更新为空闲状态。
步骤 c32, 判断发送队列是否为空;
本发明的较佳的实施例中, 若发送队列为空, 则退出;
若发送队列不为空, 则说明此时在可接受的发送时间范围内, Modem端还有需要发送的数据, 因此, 重新返回步骤 c l, 以继续发送 数据。
如图 9所示, 本发明的较佳的实施例中, 应用处理模块接收数据 的步骤具体包括:
步骤 dl, 应用处理模块开始接收数据;
本发明的较佳的实施例中, 当 AP端开始接收数据时, AP端将自 身的工作状态更新为接收数据状态, 并且从 dma中读取数据。
步骤 d2, 应用处理模块接收数据完毕, 并退出。
本发明的较佳的实施例中, 当 AP端接收数据完毕后, 将自身的 工作状态更新为空闲状态, 并退出。
在 AP端与 Modem端进行数据交互的过程中, 有时会出现数据传 输错误的情况, 通常可能包括数据包全部丢失或者部分丢失, 或者数
据包的传输顺序发生错位等等。 传统的 AP+Modem模式下通常只能做 到验证在硬件上传输的数据正确性,并不能保证数据传输出错时的实 时恢复机制和冲突处理机制。
本发明的较佳的实施例中, 提供了当 AP端发现数据传输错误和 Modem端发现数据传输错误时的数据重传机制。
本发明的较佳的实施例中,将 Modem端的数据重传机制定义为第 一检测机制, AP端的数据重传机制定义为第二检测机制。
如图 10所示, 本发明的较佳的实施例中, 第一检测机制具体包 括:
步骤 el, SDI0接口接收数据包;
步骤 e2, SDI0接口检测接收到的数据包, 并对检测结果进行判 断:
若数据包发生错误, 则转至步骤 e3;
若数据包未发生错误, 则转至步骤 e4;
本发明的较佳的实施例中, 当 SDI0接口检测到数据包发生错误 时, 会向 Modem端发送一个相应的告知信号。但是 Modem端无需对该 告知信号进行反应, 只需要丢弃发生错误的数据包即可。
步骤 e3, 基带处理模块丢弃发生错误的数据包, 随后返回步骤 el ;
步骤 e4, SDI0接口判断接收到的数据包是否是本次数据接收的 最后一个数据包;
若该接收到的数据包是本次数据接收的最后一个数据包, 则退 出;
若该接收到的数据包不是本次接收的最后一个数据包,则返回步 骤 el。
本发明的较佳的实施例中, SDI0接口在向 Modem端发送告知信 号的同时, 向 AP端发送一个请求重传发生错误的数据包的第一重传 信号; AP端接收到该第一重传信号后, 向 Modem端重新发送相应的 数据包。
如图 11所示, 本发明的较佳的实施例中, 第二检测机制具体包
括:
步骤 fl, 应用处理模块接收数据包;
步骤 f2, 应用处理模块对接收到的数据包进行检测并对检测结 果进行判断;
若数据包发生错误, 则转至步骤 f3;
若数据包未发生错误, 则转至步骤 f5;
本发明的较佳的实施例中, 与上述第一检测机制不同的是, 第二 检测机制中, 负责检测数据包是否有错的模块为 AP端。
步骤 f3, 应用处理模块向基带处理模块发送用以请求重新传输 数据的第二重传信号;
步骤 f4, 基带处理模块接收到第二重传信号后, 将发生错误的 数据包重新发送给应用处理模块; 随后返回步骤 fl ;
步骤 f5, 应用处理模块判断接收到的数据包是否为本次数据接 收的最后一个数据包;
若接收的数据包是本次数据接收的最后一个数据包, 则退出; 若接收的数据包不是本次数据接收的最后一个数据包,则返回步 骤 fl。
本发明的较佳的实施例中, 上述第一检测机制和第二检测机制 中, 均通过检测数据包的校验头(本发明的较佳的实施例中可以为数 据包头上的几位数据) 来判断该数据包的传输是否发生错误。
本发明的较佳的实施例中, 可以采用中断的方式判断 AP端接收 数据完毕:
在 AP端接收数据完毕之后, Modem端的 SDI0接口的控制器会产 生中断。 Modem端结合产生中断的此时和 AP端取走的数据量来判断 数据是否已经发送完毕。
以下结合时序图来进一步说明本发明的较佳的实施例中, AP 端 与 Modem端之间的通信连接机制。
如图 11所示, 本发明的较佳的实施例中, 当 AP端向 Modem端发 送数据时, AP端首先通过第一信号通道向 Modem端发送第一请求信 号 (AP Rts ) , 以请求与 Modem端建立连接并发送数据。 图 8中, 高
电平表示 AP Rts有效, 低电平相应的表示 AP Rts无效。
当收到 AP Rts后, Modem端通过反馈通道向 AP端发送一个反馈 信号(Modem Rdy), 以响应 AP端的请求。 图 8中, 高电平表示 Modem
Rdy有效, 低电平相应的表示 Modem Rdy无效。
如图 11中所示, SDIO Clock为 AP端发送数据时, SDI0接口的 系统时钟。
如图 12所示, 本发明的较佳的实施例中, 当 Modem端向 AP端发 送数据时, Modem 端通过第二信号通道向 AP 端发送第二请求信号 (Modem Rts ) , 随后与 AP端建立连接, 并向 AP端发送信号。
如图 12中所述, SDIO Clock为 AP端接收数据时, SDI0接口的 系统时钟。
图 13完整地示出了 AP端和 Modem端之间进行通信连接时的冲突 解决机制。
图 13中, Modem Rts低电平时为有效; AP Rts高电平时为有效; Modem Rdy低电平时为有效。
图 13中, Τ2-Π为 Modem端发送第二请求信号 (Modem Rts ) 的 持续时间,本发明的实施例中, T2-Tl < 20ms o图 10中, AP端和 Modem 端同时发起请求信号 (AP Rts和 Modem Rts ) 。 在 Τ2_Π时间段内, 首先执行 Modem Rts , 因此 AP端的第一请求信号 (AP Rts ) 处于挂 起状态。 直至 Modem Rts发送完毕, 并经过一个延迟时间 (T3_T2 < lms ) , AP Rts开始得到回应 (即 Modem Rdy) 。 AP Rts持续发送直 至 T4时刻 (T4-T3<20ms ), 此时经过一个延迟时间 (T5- T4< lms ), Modem Rdy 转为无效; 再经过一个延迟时间 (T6_T5< lms ) , Modem 端再次向 AP端发送 Modem Rts;经过一个持续时间段(T7_T6<20ms ), Modem Rts无效; 经过一个延迟时间 (T8_T7< lms ) , AP Rts开始有 效; 再经过一个延迟时间 (T9_T8< lms ) , Modem Rdy开始有效, 以 此类推。
图 14在图 13的基础上加入了 AP端的重传机制 (即上文中所述 的第二检测机制) , 具体包括:
Modem Rts无效后, 经过一个延迟时间 (T3-T2 ) , 若 AP端检测
到所接收的数据包发生错误, 则 AP端向 Modem端发送第二重传信号 (AP Resend ) , 在本发明的较佳的实施例中, AP Resend 在高电平 时有效, 即从 AP端发现数据包传输错误 (AP crc err ) 时, AP端向 Modem端发送 AP Resend,直至 AP接收该数据包完毕(AP Receive 0K)。 上述 AP crc err的持续时间为 T3-T8。
本发明的较佳的实施例中, 由于对于 Modem端来说, 无需对数据 包发生错误做出回应, 只需要丢弃发生错误的数据包即可, 因此, 不 对 Modem端的第一检测机制做专门的时序描述。
于上述技术方案的基础上, 任何可被选择的技术特征, 包括各种 信号的持续时间以及延迟时间等,均仅包括在本发明的较佳的实施例 中, 并非因此线制本发明的保护范围。
以上所述仅为本发明较佳的实施例,并非因此限制本发明的实施 方式及保护范围, 对于本领域技术人员而言, 应当能够意识到凡运用 本发明说明书及图示内容所作出的等同替换和显而易见的变化所得 到的方案, 均应当包含在本发明的保护范围内。
Claims
1. 一种移动终端内部通信方法, 适用于移动终端, 所述移动终 端内设置有应用处理模块和基带处理模块,所述应用处理模块和基带 处理模块之间设有一控制信号通道;
其特征在于, 所述控制信号通道由一第一信号通道、一第二信号 通道以及一反馈通道组成;
所述应用处理模块通过所述第一信号通道向所述基带处理模块 发送用以请求发送数据的第一请求信号,并通过所述反馈通道接收由 所述基带处理模块发送的用以准备接收数据的反馈信号;所述应用处 理模块接收到所述反馈信号后, 向所述基带处理模块发送数据; 所述基带处理模块通过所述第二信号通道向所述应用处理模块 发送用以请求发送数据的第二请求信号;随后所述基带处理模块向所 述应用处理模块发送数据。
2. 如权利要求 1所述的移动终端内部通信方法, 其特征在于, 所述应用处理模块向所述基带处理模块发送数据的步骤具体包括: 步骤 al, 所述应用处理模块通过所述第一信号通道向所述基带 处理模块发送所述第一请求信号;
步骤 a2, 所述基带处理模块通过所述反馈通道向所述应用处理 模块发送所述反馈信号;
步骤 a3, 所述应用处理模块向所述基带处理模块发送数据; 步骤 a4, 所述应用处理模块完成数据发送, 随后退出。
3. 如权利要求 2所述的移动终端内部通信方法, 其特征在于, 所述步骤 al中, 首先判断所述基带处理模块的工作状态:
步骤 al l , 判断所述基带处理模块的 SDI0接口是否处于空闲状 态;
若所述 SDI0接口处于空闲状态, 则转至步骤 al2;
若所述 SDI0接口未处于所述空闲状态, 则返回给所述应用处理 模块请求失败的信号, 随后退出;
步骤 al2, 判断所述基带处理模块是否处于接收数据状态;
所述基带处理模块未处于接收数据状态, 则转至步骤 al3;
若所述基带处理模块处于所述接收数据状态,则所述应用处理模 块等待所述基带处理模块接收数据完毕, 随后转至步骤 al3;
步骤 al3, 判断所述基带处理模块是否处于发送数据状态; 若所述基带处理模块未处于发送数据状态,则继续执行所述步骤 al ;
若所述基带处理模块处于所述发送数据状态,则所述应用处理模 块等待所述基带处理模块发送数据完毕, 随后继续执行所述步骤 al。
4. 如权利要求 2所述的移动终端内部通信方法, 其特征在于, 所述步骤 a2中, 当所述基带处理模块收到所述第一请求信号后, 判 断所述基带处理模块的工作状态:
若所述基带处理模块处于发送数据状态,则所述基带处理模块等 待数据发送完毕,随后通过所述反馈通道向所述应用处理模块发送所 述反馈信号;
若所述基带处理模块未处于所述发送数据状态,则所述基带处理 模块直接通过所述反馈通道向所述应用处理模块发送所述反馈信号。
5. 如权利要求 2所述的移动终端内部通信方法, 其特征在于, 所述步骤 a4中, 在所述应用处理模块向所述基带处理模块发送数据 时, 所述应用处理模块将工作状态更新为发送数据状态。
6. 如权利要求 2所述的移动终端内部通信方法, 其特征在于, 所述步骤 a5中, 当所述应用处理模块完成数据发送时, 所述应用处 理模块将工作状态更新为空闲状态。
7. 如权利要求 1所述的移动终端内部通信方法, 其特征在于, 所述基带处理模块接收数据的步骤具体包括:
步骤 bl, 所述基带处理模块采用一第一数据缓冲区域读取所述 应用处理模块发送的数据,并通过所述反馈通道向所述应用处理模块 发送所述反馈信号;
步骤 b2, 等待所述第一数据缓冲区域读取数据完毕后, 所述基 带处理模块从所述第一数据缓冲区域中读取数据;
步骤 b3, 判断所述基带处理模块的发送队列是否为空;
若所述发送队列不为空, 则所述基带处理模块开始发送数据; 若所述发送队列为空, 则退出。
8. 如权利要求 7所述的移动终端内部通信方法, 其特征在于, 所述步骤 bl中,首先判断所述基带处理模块的 SDI0接口是否处于空 闲状态:
若所述 SDI0接口处于所述空闲状态, 则继续执行所述步骤 bl ; 若所述 SDI0接口未处于所述空闲状态, 则等待所述基带处理模 块发送数据完毕, 随后判断此时所述 SDI0接口是否可以读取数据; 若所述 SDI0接口能够读取数据, 则继续执行所述步骤 bl ;
若所述 SDI0接口不能读取数据, 则所述基带处理模块将工作状 态更新为发送数据状态, 并转至所述步骤 b3。
9. 如权利要求 8所述的移动终端内部通信方法, 其特征在于, 所述步骤 b2中, 等待所述第一数据缓冲区域读取数据完毕后, 所述 基带处理模块将工作状态更新为读取数据状态,并从所述第一数据缓 冲区域中读取数据。
10. 如权利要求 8所述的移动终端内部通信方法, 其特征在于, 所述步骤 b2中, 所述基带处理模块采用一复用器从所述第一数据缓 冲区域中读取数据。
11. 如权利要求 1所述的移动终端内部通信方法, 其特征在于, 所述基带处理模块向所述应用处理模块发送数据的步骤具体包括: 步骤 cl, 所述基带处理模块开始向所述应用处理模块发送数据; 步骤 c2, 所述基带处理模块通过所述第二信号通道向所述应用 处理模块发送所述第二请求信号;
步骤 c3, 所述基带处理模块发送数据完毕, 并退出。
12. 如权利要求 11所述的移动终端内部通信方法, 其特征在于, 所述步骤 cl中, 首先判断总线是否处于空闲状态:
步骤 cl 1,所述基带处理模块将数据发送至一第二数据缓冲区域, 并对数据进行适配所述 SDI0接口的封装;
步骤 cl2, 判断所述总线是否处于空闲状态;
若所述总线未处于空闲状态, 则转至步骤 cl3;
若所述总线处于所述空闲状态, 则继续执行所述步骤 cl ;
步骤 cl3, 所述基带处理模块将所述第二请求信号挂起, 以等待 所述总线处于空闲状态;
步骤 cl4,当所述总线处于空闲状态时,则继续执行所述步骤 c l。
13. 如权利要求 11所述的移动终端内部通信方法, 其特征在于, 所述步骤 c2中, 所述基带处理模块发送所述第二请求信号的同时将 工作状态更新为发送数据状态。
14. 如权利要求 11所述的移动终端内部通信方法, 其特征在于, 所述步骤 c3中, 判断所述基带处理模块发送数据是否超出一预设的 时间间隔的步骤具体包括:
步骤 c31, 若所述基带处理模块发送数据未超出所述预设的时间 间隔, 则将已发送的数据从所述基带处理模块的发送队列中去除; 随 后转至步骤 c32 ;
若所述基带处理模块发送数据超出所述预设的时间间隔,则直接 转至所述步骤 c32;
步骤 c32, 判断所述发送队列是否为空;
若所述发送队列不为空, 则返回至所述步骤 cl ;
若所述发送队列为空, 则退出。
15. 如权利要求 14所述的移动终端内部通信方法, 其特征在于, 所述步骤 c31 中, 所述基带处理模块将工作状态更新为发送完毕状 态。
16. 如权利要求 11所述的移动终端内部通信方法, 其特征在于, 所述步骤 c3中, 将所述基带处理模块的工作状态更新为空闲状态。
17. 如权利要求 1所述的移动终端内部通信方法, 其特征在于, 所述应用处理模块接收所述基带处理模块发送的数据的步骤具体包 括:
步骤 dl, 所述应用处理模块开始接收数据;
步骤 d2, 所述应用处理模块接收数据完毕, 并退出。
18. 如权利要求 17所述的移动终端内部通信方法, 其特征在于, 所述步骤 dl中,所述应用处理模块将工作状态更新为接收数据状态。
19. 如权利要求 7所述的移动终端内部通信方法, 其特征在于, 当所述基带处理模块接收数据时, 启动一第一检测机制:
所述第一检测机制具体包括:
步骤 el, 所述 SDIO接口接收数据包;
步骤 e2, 所述 SDIO接口对接收到的所述数据包进行检测, 并 对所述检测结果进行判断;
若数据包发生错误, 则转至步骤 e3;
若数据包未发生错误, 则转至步骤 e4;
步骤 e3, 所述基带处理模块丢弃发生错误的数据包, 随后返回 所述步骤 el ;
步骤 e4, 所述 SDI0接口判断接收到的所述数据包是否为本次数 据接收的最后一个数据包;
若接收的所述数据包是本次数据接收的最后一个数据包, 则退 出;
若接收的所述数据包不是本次数据接收的最后一个数据包,则返 回所述步骤 el。
20. 如权利要求 19所述的移动终端内部通信方法, 其特征在于, 所述步骤 e4中,所述 SDI0接口向所述应用处理模块发送要求重传发 生错误的相应数据包的第一重传信号;
所述应用处理模块接收到所述第一重传信号后,重新向所述基带 处理模块发送相应的所述数据包。
21. 如权利要求 17所述的移动终端内部通信方法, 其特征在于, 当所述应用处理模块接收数据时, 启动一第二检测机制;
所述第二检测机制具体包括:
步骤 fl, 所述应用处理模块接收数据包;
步骤 f2, 所述应用处理模块对接收到的所述数据包进行检测并 对所述检测结果进行判断;
若所述数据包发生错误, 则转至步骤 f3;
若所述数据包未发生错误, 则转至步骤 f5;
步骤 f3, 所述应用处理模块向所述基带处理模块发送用以请求
重新传输数据的第二重传信号;
步骤 f4, 所述基带处理模块接收到所述第二重传信号后, 将发 生错误的数据包重新发送给所述应用处理模块; 随后返回所述步骤 fl ;
步骤 f5, 所述应用处理模块判断接收到的所述数据包是否为本 次数据接收的最后一个数据包;
若接收的所述数据包是本次数据接收的最后一个数据包, 则退 出;
若接收的所述数据包不是本次数据接收的最后一个数据包,则返 回所述步骤 fl。
Priority Applications (5)
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|---|---|---|---|
| US14/129,634 US9258834B2 (en) | 2013-09-05 | 2013-09-05 | Method of mobile terminal internal communications |
| CN201380001803.2A CN103650401B (zh) | 2013-09-05 | 2013-09-05 | 一种移动终端内部通信方法 |
| PCT/CN2013/082985 WO2015032048A1 (zh) | 2013-09-05 | 2013-09-05 | 一种移动终端内部通信方法 |
| EP13199480.8A EP2846470B1 (en) | 2013-09-05 | 2013-12-23 | A method of mobile terminal internal communications |
| IN2439MUN2013 IN2013MN02439A (zh) | 2013-09-05 | 2013-12-24 |
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| US (1) | US9258834B2 (zh) |
| EP (1) | EP2846470B1 (zh) |
| CN (1) | CN103650401B (zh) |
| IN (1) | IN2013MN02439A (zh) |
| WO (1) | WO2015032048A1 (zh) |
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| US10149343B2 (en) | 2015-05-11 | 2018-12-04 | Apple Inc. | Use of baseband triggers to coalesce application data activity |
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| US10028216B2 (en) * | 2014-07-24 | 2018-07-17 | Huawei Technologies Co., Ltd. | Data transceiving method, modem, and terminal device |
| CN112713970B (zh) * | 2016-11-02 | 2022-05-13 | 华为技术有限公司 | 一种发送报文的方法、装置、芯片及终端 |
| CN107318168B (zh) * | 2017-06-21 | 2020-07-24 | 深圳市盛路物联通讯技术有限公司 | 一种控制物联网终端设备通信的方法及系统 |
| CN112311725B (zh) * | 2019-07-26 | 2022-01-11 | 华为技术有限公司 | 一种数据处理方法、装置及终端 |
| CN111625483A (zh) * | 2020-05-21 | 2020-09-04 | 展讯通信(上海)有限公司 | 一种串行总线及通信装置 |
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| EP2846470B1 (en) | 2016-12-21 |
| US20150201436A1 (en) | 2015-07-16 |
| CN103650401A (zh) | 2014-03-19 |
| IN2013MN02439A (zh) | 2015-08-21 |
| US9258834B2 (en) | 2016-02-09 |
| CN103650401B (zh) | 2017-03-08 |
| EP2846470A1 (en) | 2015-03-11 |
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