技术领域technical field
本发明涉及通信技术领域，特别是涉及一种节能方法和终端。The present invention relates to the field of communication technologies, in particular to an energy-saving method and a terminal.
背景技术Background technique
物联网系统中存在大量机器对机器、机器对人、机器对平台之间的远程通信，该远程通信需要通过蜂窝无线通信系统完成，以实现无处不在、随时随地的信息采集、信息感知、信息传输和信息汇聚。通过蜂窝无线通信系统，用户可以远程采集各类传感信息，例如江河的水文信息、物流业中长途汽车的位置及状态、智能家庭中各家用电器的用电情况和工作状态等。In the Internet of Things system, there are a large number of machine-to-machine, machine-to-human, and machine-to-platform remote communications. This remote communication needs to be completed through a cellular wireless communication system to achieve ubiquitous, anytime, anywhere information collection, information perception, and information Transmission and aggregation of information. Through the cellular wireless communication system, users can remotely collect various sensory information, such as hydrological information of rivers, the location and status of long-distance buses in the logistics industry, and the power consumption and working status of various household appliances in smart homes.
由于涉及蜂窝无线通信系统，物联网系统采用类似于普通手机的物联网终端，物联网终端的工作流程与普通手机完全相同，如图1所示，包括：模块上电初始化、网络搜索、位置及路由更新、PDP(PacketDataProtocol，分组数据协议)激活、数据传输、PDP去激活、待机、网络分离、关机过程和关机待机。其中，在模块上电初始化过程中，物联网终端通过DBB(DigitalBaseband，数字基带)单元中的CPU(CentralProcessingUnit，中央处理器)从Flash存储器向RAM(RandomAccessMemory，随机存储器)搬移代码，并在RAM中根据搬移的代码对应的程序进行各类初始化工作，包括操作系统初始化、平台初始化、协议栈初始化和物理层初始化。Due to the cellular wireless communication system involved, the IoT system uses IoT terminals similar to ordinary mobile phones. The workflow of IoT terminals is exactly the same as that of ordinary mobile phones, as shown in Figure 1, including: module power-on initialization, network search, location and Routing update, PDP (PacketDataProtocol, Packet Data Protocol) activation, data transmission, PDP deactivation, standby, network separation, shutdown process and shutdown standby. Among them, during the power-on initialization process of the module, the Internet of Things terminal moves the code from the Flash memory to the RAM (Random Access Memory, random access memory) through the CPU (Central Processing Unit, central processing unit) in the DBB (Digital Baseband, digital baseband) unit, and transfers the code in the RAM Perform various initialization tasks according to the programs corresponding to the moved codes, including operating system initialization, platform initialization, protocol stack initialization, and physical layer initialization.
然而，物联网终端的数据传输流程与普通手机的数据传输流程之间存在较大的区别，物联网终端通常需要周期性地传输数据，或者被唤醒的时间间隔较长。例如，在智能汽车应用中，物联网终端可以每隔一天或者一个月通过CAN(ControllerAreaNetwork，控制器局域网络)总线将采集到的车内信息采集一次性传输到指定的地址；在智能电网中，智能电表每隔一段时间(半小时或者一小时不等)被远程平台发送的消息唤醒，将采集到的电力数据通过无线信道发送给信息平台。因此，物联网终端的待机能力往往不是通过时间表示，而是以工作次数表示，例如，一块2500mAH的电池能供物联网终端进行5000次数据传输。However, there is a big difference between the data transmission process of the Internet of Things terminal and the data transmission process of ordinary mobile phones. The Internet of Things terminal usually needs to transmit data periodically, or the time interval of being woken up is relatively long. For example, in the smart car application, the IoT terminal can transmit the collected in-vehicle information to the designated address once every other day or month through the CAN (ControllerAreaNetwork, Controller Area Network) bus; in the smart grid, The smart meter is woken up by the message sent by the remote platform at intervals (half an hour or an hour), and sends the collected power data to the information platform through the wireless channel. Therefore, the standby capability of an IoT terminal is often expressed not by time, but by the number of operations. For example, a 2500mAH battery can provide 5,000 data transmissions for an IoT terminal.
另外，与普通手机相比，物联网终端往往长期无人值守、自动操作，且需要通过电池供电，无法像普通手机一样频繁地充电或更换电池等。因此，如何降低物联网终端的工作功耗，是物联网远程数据传输的关键技术，也是影响物联网技术应用推广的关键所在。In addition, compared with ordinary mobile phones, IoT terminals are often unattended and automatically operated for a long time, and need to be powered by batteries, so they cannot be charged or replaced as frequently as ordinary mobile phones. Therefore, how to reduce the working power consumption of IoT terminals is the key technology for remote data transmission of IoT, and also the key to the application and promotion of IoT technology.
在实现本发明的过程中，发明人发现现有技术至少存在如下问题：In the process of realizing the present invention, the inventor finds that there are at least the following problems in the prior art:
物联网终端在两次数据传输之间的空闲时间包括PDP去激活、待机和网络分离等过程，总长度可能长达几十分钟，其中，PDP去激活和网络分离过程中的工作电流在100mA左右，时间在2分钟左右，而物联网终端用于进行数据传输和网络交互的时间非常短，物联网终端在两次数据传输之间的空闲功耗远远大于数据传输的功耗，因此，物联网终端在与数据传输无关的工作上消耗了大量的功耗。The idle time between two data transmissions of the IoT terminal includes processes such as PDP deactivation, standby and network separation, and the total length may be as long as tens of minutes. Among them, the working current during the process of PDP deactivation and network separation is about 100mA , the time is about 2 minutes, and the time for data transmission and network interaction of IoT terminals is very short, and the idle power consumption of IoT terminals between two data transmissions is much greater than the power consumption of data transmission. Internet-connected terminals consume a large amount of power for work unrelated to data transmission.
发明内容Contents of the invention
本发明的目的在于提供一种节能方法和终端，以降低终端的功耗，为此，本发明采用如下技术方案：The purpose of the present invention is to provide an energy-saving method and terminal to reduce the power consumption of the terminal. To this end, the present invention adopts the following technical solutions:
一种节能方法，终端包括基带单元、外围电路和Flash存储器，所述方法包括：An energy-saving method, the terminal includes a baseband unit, a peripheral circuit and a Flash memory, and the method includes:
所述基带单元接收所述外围电路发送的外部电平信号，根据所述外部电平信号指示Flash存储器保存文件，并进入休眠状态。The baseband unit receives the external level signal sent by the peripheral circuit, instructs the Flash memory to save the file according to the external level signal, and enters into a dormant state.
一种终端，包括：A terminal comprising:
外围电路，用于向基带单元发送外部电平信号；The peripheral circuit is used to send an external level signal to the baseband unit;
基带单元，用于接收所述外围电路发送的外部电平信号，根据所述外部电平信号指示Flash存储器保存文件，并进入休眠状态；The baseband unit is used to receive the external level signal sent by the peripheral circuit, instruct the Flash memory to save the file according to the external level signal, and enter the dormant state;
Flash存储器，用于根据所述基带单元的指示保存文件。The Flash memory is used for storing files according to the instructions of the baseband unit.
本发明的实施例包括以下优点，基带单元接收来自外围电路的外部电平信号，将文件保存到Flash存储器中并进入休眠状态，缩短了系统下电时间，避免了待机过程和关机过程中的能量消耗以及通过AT指令集关机时的时间消耗，增强了系统的稳定性。当然，实施本发明的实施例的任一产品并不一定需要同时达到以上所述的所有优点。Embodiments of the present invention include the following advantages, the baseband unit receives the external level signal from the peripheral circuit, saves the file in the Flash memory and enters the dormant state, shortens the power-off time of the system, and avoids the energy in the standby process and the shutdown process The consumption and the time consumption when shutting down through the AT command set enhance the stability of the system. Of course, any product that implements the embodiments of the present invention does not necessarily need to achieve all the above-mentioned advantages at the same time.
附图说明Description of drawings
图1为现有技术中的无线通信方法流程图；Fig. 1 is a flow chart of a wireless communication method in the prior art;
图2为本发明实施例中的节能方法流程图；Fig. 2 is the flowchart of the energy-saving method in the embodiment of the present invention;
图3为本发明实施例中的终端结构示意图。FIG. 3 is a schematic diagram of a terminal structure in an embodiment of the present invention.
具体实施方式detailed description
下面将结合本发明中的附图，对本发明中的技术方案进行清楚、完整的描述，显然，所描述的实施例是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Apparently, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
本发明实施例提供的技术方案中，可以扩大终端中的Flash存储器的存储空间，将已经初始化的系统文件以镜像文件的方式烧入Flash存储器中。此外，终端还可以预先存储有频点列表，该频点列表中可以包括预先配置的频点。In the technical solution provided by the embodiment of the present invention, the storage space of the Flash memory in the terminal can be expanded, and the initialized system files can be burned into the Flash memory in the form of a mirror image file. In addition, the terminal may also pre-store a frequency point list, and the frequency point list may include pre-configured frequency points.
如图2所示，为本发明实施例中的节能方法流程图，包括以下步骤：As shown in Figure 2, it is a flow chart of the energy saving method in the embodiment of the present invention, including the following steps:
步骤201，基带单元上电并运行已经初始化的系统文件。In step 201, the baseband unit is powered on and runs the initialized system file.
具体地，终端中的基带单元上电后，不再进行代码搬移和初始化操作，而是直接运行以镜像文件的方式存储于Flash存储器中的已经初始化的系统文件。Specifically, after the baseband unit in the terminal is powered on, it does not perform code migration and initialization operations, but directly runs the initialized system files stored in the Flash memory in the form of image files.
步骤202，基带单元连接频点列表中的频点，判断是否与频点列表中的频点连接成功，如果与频点列表中的频点连接成功，则执行步骤203；如果与频点列表中的频点连接失败，则执行步骤204。Step 202, the baseband unit connects to the frequency point in the frequency point list, and judges whether it is successfully connected with the frequency point in the frequency point list, if it is successfully connected with the frequency point in the frequency point list, then perform step 203; If the frequency connection fails, step 204 is performed.
其中，频点列表中可以包括终端最近成功连接过的多个频点，并对应记录有所述终端成功连接到相应频点时的时间点；基带单元可以根据频点列表记录的时间点、按照从近到远的顺序选择对应的频点进行连接，若连接失败则按照该顺序选择下一个频点进行连接，直到连接成功或者与频点列表中的所有频点均连接失败。例如，频点列表中可以包括频点1、频点2和频点3，对应的成功连接时刻分别为10分钟前、20分钟前和30分钟前，终端可以先连接频点1；如果连接频点1失败，则连接频点2；如果连接频点2失败，则连接频点3。Wherein, the frequency point list may include multiple frequency points that the terminal has successfully connected recently, and correspondingly records the time point when the terminal successfully connects to the corresponding frequency point; the baseband unit may record the time point according to the frequency point list, according to Select the corresponding frequency point to connect in order from near to far. If the connection fails, select the next frequency point in this order to connect until the connection succeeds or all frequency points in the frequency point list fail to connect. For example, the frequency point list may include frequency point 1, frequency point 2, and frequency point 3, and the corresponding successful connection times are 10 minutes ago, 20 minutes ago, and 30 minutes ago respectively, and the terminal can connect to frequency point 1 first; If point 1 fails, connect to frequency point 2; if the connection to frequency point 2 fails, connect to frequency point 3.
步骤203，基带单元根据连接到的频点进行位置及路由更新。In step 203, the baseband unit updates its location and route according to the connected frequency point.
需要说明的是，执行完本步骤后，可以继续执行步骤205。It should be noted that, after this step is performed, step 205 may be continued.
步骤204，基带单元进行网络搜索，根据搜索到的频点进行位置及路由更新。In step 204, the baseband unit conducts a network search, and performs location and route update according to the searched frequency points.
步骤205，基带单元进行PDP激活和数据传输。Step 205, the baseband unit performs PDP activation and data transmission.
步骤206，基带单元接收来自外围电路的外部电平信号，指示Flash存储器保存文件，并进入休眠状态。Step 206, the baseband unit receives an external level signal from the peripheral circuit, instructs the Flash memory to save the file, and enters into a dormant state.
具体地，终端完成数据传输后，不再进行PDP去激活、网络分离和待机等操作；而是通过基带单元中的CPU接收来自外围电路的直接关机电平，根据该直接关机电平指示Flash存储器快速保存文件，并下电进入深度休眠状态，切断对PMU(PowerManagementUnit，电源管理单元)的供电，仅保留PMU与外部RTC(RealTimeClock，实时时钟)的连接。由于终端通过PMU与外部RTC连接，可以通过外部RTC进行计时和控制基带单元的深度休眠状态。如果需要进行下一次数据传输，PMU可以接收来自外部RTC的时钟信号，根据该时钟信号对基带单元进行重新上电。Specifically, after the terminal completes data transmission, it no longer performs operations such as PDP deactivation, network separation, and standby; instead, the CPU in the baseband unit receives the direct shutdown level from the peripheral circuit, and instructs the Flash memory according to the direct shutdown level. Quickly save the file, and power off to enter a deep sleep state, cut off the power supply to the PMU (Power Management Unit, power management unit), and only keep the connection between the PMU and the external RTC (RealTimeClock, real-time clock). Since the terminal is connected to the external RTC through the PMU, the external RTC can be used to perform timing and control the deep sleep state of the baseband unit. If the next data transmission is required, the PMU can receive the clock signal from the external RTC, and re-power the baseband unit according to the clock signal.
需要说明的是，本发明实施例中的步骤201为优选步骤，通过运行已经初始化的系统文件，可以节约代码搬移和系统初始化的时间，降低终端的功耗；在本发明的其他实施方式，终端开机后也可以进行进行代码搬移和系统初始化，同样可以实现本发明的发明目的。It should be noted that step 201 in the embodiment of the present invention is a preferred step. By running the initialized system file, the time for code migration and system initialization can be saved, and the power consumption of the terminal can be reduced; in other embodiments of the present invention, the terminal Code migration and system initialization can also be carried out after starting up, and the invention object of the present invention can also be achieved.
另外，本发明实施例中的步骤202和步骤203也是优选步骤，通过连接频点列表中的频点，可以节省网络搜索的时间，降低终端的功耗；在本发明的其他实施方式，终端也可以直接进行网络搜索，同样可以实现本发明的发明目的。In addition, step 202 and step 203 in the embodiment of the present invention are also preferred steps. By connecting the frequency points in the frequency point list, the time of network search can be saved, and the power consumption of the terminal can be reduced; in other embodiments of the present invention, the terminal also The network search can be carried out directly, and the invention object of the present invention can also be realized.
本发明的实施例包括以下优点，在系统上电后运行已经初始化的系统文件，简化了无线通信中与数据传输无关的初始化过程；基带单元在传输数据完毕之后接收来自外围电路的外部电平信号，将文件保存到Flash存储器中并进入休眠状态，缩短了系统下电时间，避免了待机过程和关机过程中的能量消耗以及通过AT指令集关机时的时间消耗，增强了系统的稳定性；使用外部RTC控制终端的深度休眠状态，可以将休眠电流160μA降低到4μA，降低了终端在深度休眠状态下的功耗。当然，实施本发明的实施例的任一产品并不一定需要同时达到以上所述的所有优点。Embodiments of the present invention include the following advantages. After the system is powered on, the initialized system file is run, which simplifies the initialization process irrelevant to data transmission in wireless communication; the baseband unit receives the external level signal from the peripheral circuit after the data transmission is completed. , save the file in the Flash memory and enter the dormant state, which shortens the power-off time of the system, avoids the energy consumption during the standby process and the shutdown process and the time consumption when shutting down through the AT command set, and enhances the stability of the system; use The external RTC controls the deep sleep state of the terminal, which can reduce the sleep current from 160μA to 4μA, reducing the power consumption of the terminal in the deep sleep state. Of course, any product that implements the embodiments of the present invention does not necessarily need to achieve all the above-mentioned advantages at the same time.
根据上述实施方式中提供的节能方法，本发明实施例还提供了应用上述节能方法的装置。According to the energy saving method provided in the foregoing implementation manners, an embodiment of the present invention further provides a device for applying the foregoing energy saving method.
如图3所示，为本发明实施例中的终端结构示意图，包括：As shown in FIG. 3, it is a schematic diagram of a terminal structure in an embodiment of the present invention, including:
外围电路310，用于向基带单元发送外部电平信号。The peripheral circuit 310 is used to send an external level signal to the baseband unit.
基带单元320，用于接收外围电路310发送的外部电平信号，根据该外部电平信号指示Flash存储器330保存文件，并进入休眠状态。The baseband unit 320 is configured to receive an external level signal sent by the peripheral circuit 310, and instruct the Flash memory 330 to save the file according to the external level signal, and enter into a dormant state.
Flash存储器330，用于根据基带单元320的指示保存文件。The Flash memory 330 is used for storing files according to the instructions of the baseband unit 320 .
上述终端，还可以进一步包括：The above terminal may further include:
电源管理单元340，用于与外部RTC连接，接收来自外部RTC的时钟信号，根据该时钟信号对基带单元320进行重新上电。The power management unit 340 is configured to connect with the external RTC, receive a clock signal from the external RTC, and re-power the baseband unit 320 according to the clock signal.
具体地，在传输数据完毕后，基带单元320不再进行PDP去激活、网络分离和待机等操作，而是接收来自外围电路310的直接关机电平，根据该直接关机电平指示Flash存储器中快速保存文件，并下电进入深度休眠状态，切断对电源管理单元340的供电，仅保留电源管理单元340与外部RTC的连接。由于电源管理单元340与外部RTC连接，可以通过外部RTC进行计时和控制终端的深度休眠状态。如果需要进行下一次数据传输，电源管理单元340可以接收来自外部RTC的时钟信号，根据该时钟信号对基带单元320进行重新上电。Specifically, after the data transmission is completed, the baseband unit 320 no longer performs operations such as PDP deactivation, network separation, and standby, but receives a direct shutdown level from the peripheral circuit 310, and instructs the flash memory according to the direct shutdown level. Save the file, and power off to enter a deep sleep state, cut off the power supply to the power management unit 340, and only keep the connection between the power management unit 340 and the external RTC. Since the power management unit 340 is connected to the external RTC, the external RTC can be used to perform timing and control the deep sleep state of the terminal. If the next data transmission needs to be performed, the power management unit 340 may receive a clock signal from an external RTC, and re-power the baseband unit 320 according to the clock signal.
上述Flash存储器330，还用于存储已经初始化的系统文件；相应地，上述基带单元320，还用于在上电后运行Flash存储器330存储的系统文件，并根据该系统文件进行网络搜索。The above-mentioned Flash memory 330 is also used to store initialized system files; correspondingly, the above-mentioned baseband unit 320 is also used to run the system files stored in the Flash memory 330 after power-on, and perform network search according to the system files.
上述终端，还可以进一步包括：The above terminal may further include:
存储单元350，用于存储频点列表，该频点列表中包括预设设置的频点，可以是终端成功连接过的频点；相应地，上述基带单元320，还用于连接存储单元350存储的频点列表中的频点，如果与该频点列表中的频点连接成功，则根据该频点列表中的频点进行位置及路由更新；如果与该频点列表中的频点连接失败，则进行网络搜索，并根据搜索到的频点进行位置及路由更新。The storage unit 350 is used to store a list of frequency points. The frequency point list includes preset frequency points, which may be frequency points that the terminal has successfully connected to; correspondingly, the above-mentioned baseband unit 320 is also used to connect to the storage unit 350 to store If the frequency point in the frequency point list is successfully connected to the frequency point in the frequency point list, the location and route update will be performed according to the frequency point in the frequency point list; if the connection with the frequency point in the frequency point list fails , then perform a network search, and update the location and route according to the searched frequency points.
具体地，当上述频点列表中包括多个频点并对应记录有所述终端成功连接到相应频点时的时间点时，基带单元320可以根据频点列表记录的时间点、按照从近到远的顺序选择对应的频点进行连接，若连接失败则按照上述顺序选择下一个频点进行连接，直到连接成功或者与频点列表中的所有频点均连接失败。Specifically, when the above-mentioned frequency point list includes multiple frequency points and correspondingly records the time point when the terminal successfully connects to the corresponding frequency point, the baseband unit 320 may record the time points in the frequency point list in order from nearest to Select the corresponding frequency point to connect in the farthest order. If the connection fails, select the next frequency point to connect in the above order until the connection is successful or all the frequency points in the frequency point list fail to connect.
本发明的实施例包括以下优点，在系统上电后运行已经初始化的系统文件，简化了无线通信中与数据传输无关的初始化过程；基带单元在传输数据完毕之后接收来自外围电路的外部电平信号，将文件保存到Flash存储器中并进入休眠状态，缩短了系统下电时间，避免了待机过程和关机过程中的能量消耗以及通过AT指令集关机时的时间消耗，增强了系统的稳定性；使用外部RTC控制终端的深度休眠状态，可以将休眠电流160μA降低到4μA，降低了终端在深度休眠状态下的功耗。当然，实施本发明的实施例的任一产品并不一定需要同时达到以上所述的所有优点。Embodiments of the present invention include the following advantages. After the system is powered on, the initialized system file is run, which simplifies the initialization process irrelevant to data transmission in wireless communication; the baseband unit receives the external level signal from the peripheral circuit after the data transmission is completed. , save the file in the Flash memory and enter the dormant state, which shortens the power-off time of the system, avoids the energy consumption during the standby process and the shutdown process and the time consumption when shutting down through the AT command set, and enhances the stability of the system; use The external RTC controls the deep sleep state of the terminal, which can reduce the sleep current from 160μA to 4μA, reducing the power consumption of the terminal in the deep sleep state. Of course, any product that implements the embodiments of the present invention does not necessarily need to achieve all the above-mentioned advantages at the same time.
本领域技术人员可以理解实施例中的装置中的模块可以按照实施例描述进行分布于实施例的装置中，也可以进行相应变化位于不同于本实施例的一个或多个装置中。上述实施例的模块可以合并为一个模块，也可以进一步拆分成多个子模块。Those skilled in the art can understand that the modules in the device in the embodiment can be distributed in the device in the embodiment according to the description in the embodiment, or can be located in one or more devices different from the embodiment according to corresponding changes. The modules in the above embodiments can be combined into one module, and can also be further split into multiple sub-modules.
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到本发明可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台终端设备(可以是手机，个人计算机，服务器，或者网络设备等)执行本发明各个实施例所述的方法。Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is a better implementation Way. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions to make a A terminal device (which may be a mobile phone, a personal computer, a server, or a network device, etc.) executes the methods described in various embodiments of the present invention.
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视本发明的保护范围。The above is only a preferred embodiment of the present invention, it should be pointed out that, for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.
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| CN201010623564.2ACN102547933B (en) | 2010-12-30 | 2010-12-30 | A kind of power-economizing method and terminal |
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