Huawei manual Huawei ME909u-521 LTE LGA Module Application Guide Overview

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HUAWEI ME909u-521 LTE LGA Module

 

Application Guide

Overview

2.If the module returns failure information, go to step 5.

3.If the module returns success information, the module is functioning normally.

4.If the host times out (the host waits for a response for over 30 seconds) three times when waiting for the response from the module, go to step 5. Otherwise go to step 1.

5.The host deems that the current module does not exist or is unavailable. Close the port, stop sending all AT commands, exit the procedure to determine whether the module is normal, and re-search for modules.

Issue 01 (2013-07-05)

Huawei Proprietary and Confidential

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Copyright © Huawei Technologies Co., Ltd.

 

 

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Contents Application Guide Issue DateNo Warranty Revision History About This DocumentDate Chapter Description Version 2013-07-05 CreationContents SMS Application Scenarios Sleeping and Waking Up Application Scenarios Module Powering Off and Resetting Application ScenariosConventions and Definitions OverviewConventions DefinitionsChapter Description Organization of This DocumentAT Command Processing Mechanism Basic AT Command Processing PrinciplesPorts AT command Process AT command  AT+CLCK ExampleAT Command Timeout Duration +CME Error SIM failureExample AT+CREG?Huawei ME909u-521 LTE LGA Module Application Guide Overview Initialization Application Scenarios TroubleshootingStartup Indication Sysstart Reference ProcessQuerying Basic Information Network Service Operations +CME Error SIM failure No SIM card is detected. Insert Scenario Possible Error Information SolutionAT+COPS? Searching and Registering Network Network Searching and Registration Application Scenarios1Automatic search for networks Start HCSQGSM,73AT+CREG? +CME Error SIM AT+COPS? +CME Error SIMFailure SIM card ECM Dialing ECM Application ScenariosATNDISDUP=? Ndisstat 1,,,IPV4ATNDISSTATQRY? Querying the Dial-up Connection StateNdisstatqry 0,0,,IPV4 Ndisstatqry 1,,,IPV4ATNDISDUP=1,0 Disconnecting the Dial-up ConnectionNDISSTAT0,,,IPV4 Overview SMS Application Scenarios1Example of data encoded in PDU format of submitted type Initializing SMS Set the short message format to PDU AT+CMGF=04SMS initialization process part Sending Short Message +CMS Error SIMSet the short message format to PDU Query the Smsc address +CSCA 13800688509,129+CMGS 0000FF04F4F29C0E\x0A0B813109731147F40000FF0 4F4F29C0E\x1A +CMGS 6Sending short messages in PDU format Reading Short Messages Message State PDU ModeAT+CMGL=0 EFF007Reading short messages AT+CMGL=4 Deleting Short MessagesEF3B282C2F83F2EFFA0F AT+CMGD=1 8Deleting short message Memory Operations Phonebook Application ScenariosAT+CPBS=? AT+CPBS=SMCommands Enter the correct PIN Required +CME Error SIM PINPhonebook initialization has +CPBR Reading Phonebook EntriesEnter the correct PUK PUK required CommandDescriptionAT+CPBR=? Writing/Deleting Phonebook Entries Reference ProcessAT+CPBW=1 Delete the entry in index 1 in the phonebook3Writing phonebook entries AT+CPBF=findtext Searching for Phonebook Entries+CBPF index1,number,type,text +CBPF index2,number,type,text AT+CPBF=?AT+CNUM Querying User NumberQuery the SIM number +CNUM alpha1,number1,type1 +CNUM alpha2,number2,type2AT+CSCS=? Setting the TEs Character SetsAT+CSCS? +CSCS IRA AT+CPBR=10123456789,129,004800550041 005700450049 PIN Operations SIM Operation Application ScenariosAT+CLCK=SC,2 Request the PIN stateRequest the SIM card state Check whether the password isPIN RequestedCrsm Command AT+CRSM=242 Binary Sleeping and Waking Up Application Scenarios Hardware Interfaces Interface Pin name Direction Functional Description Diagram1WAKE# PIN output sequence Sequence DiagramPrinciple Software Interfaces5Currency state when the module is in sleep mode USB and Sleep 6Sleep procedureModule Wake-up Uart and SleepHost Woken up by Module HS Hub Application Scenarios System with USB Connection only Software ProcedureHardware Connection Advantages Application Scenarios System with USBATWAKEUPCFG=1,1,14 System with Other Connection Methods When the host is awake, unsolicitedMode, and reported to the host when It wakes upThermal Protection Application Scenarios Pre-configurationThermal Protection Process ATCURC=2,0x8000000000,0x8000000000Issue 01 Huawei Proprietary and Confidential Power Off ME Module Powering Off and Resetting Application ScenariosRestarting the ME AT+CFUN=1,1Troubleshooting Relative Documents AppendixAcronyms and Abbreviations Acronym or Abbreviation ExpansionAbbreviation Full Name

ME909u-521 specifications

The Huawei ME909u-521 is a cutting-edge module designed to meet the increasing demand for mobile broadband connectivity in various industrial and commercial applications. This compact and robust device is primarily used for M2M (Machine-to-Machine) communication and IoT (Internet of Things) solutions. It supports a wide range of features and technologies that make it a versatile choice for businesses looking to enhance their operational efficiency through cellular connectivity.

One of the key features of the ME909u-521 is its support for multiple frequency bands. It is compatible with 4G LTE networks, ensuring high-speed data transmission and reduced latency. This capability allows for seamless communication in various environments, making it an ideal solution for applications such as smart cities, telematics, transportation, and remote monitoring.

In addition to LTE capabilities, the ME909u-521 also supports 3G and 2G networks, providing fallback options in areas where 4G coverage may be limited. This multi-network support guarantees reliable connectivity, which is crucial for mission-critical applications. The module is designed to maintain stable connections even in challenging conditions, such as in-motion environments or areas with fluctuating signal strengths.

The Huawei ME909u-521 features a compact form factor, making it easy to integrate into a wide range of devices and applications. Its small size reduces the overall footprint, which is particularly advantageous for space-constrained installations. Furthermore, the device is equipped with advanced power management features that help optimize energy consumption, extending the lifespan of connected devices.

For enhanced security, the ME909u-521 integrates robust encryption protocols to protect data transmission over mobile networks. Security is a top priority for M2M and IoT applications, and this module ensures secure communication by adhering to global standards and best practices.

Another notable characteristic is its extensive support for various interfaces, including UART and USB, facilitating seamless integration with different hardware systems. This flexibility allows developers to quickly implement and scale their solutions based on specific project requirements.

Overall, the Huawei ME909u-521 is a powerful connectivity module that combines high-speed communication, versatility, and reliability. With its state-of-the-art technologies, it is well-suited for a wide array of applications, making it a valuable asset for businesses looking to advance their digital transformation initiatives. Whether utilized in smart grids, remote monitoring, or intelligent transportation systems, the ME909u-521 stands out as a leading solution in the M2M and IoT landscape.
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