HUAWEI ME909u-521 LTE LGA Module
Application Guide
NO WARRANTY
Trademarks and Permissions
Import and Export Regulations
HUAWEI ME909u-521 LTE LGA Module
About This Document
Revision History
Issue
4 ECM Application Scenarios
Contents
2 Initialization Application Scenarios
3 Network Searching and Registration Application Scenarios
7 SIM Operation Application Scenarios
5 SMS Application Scenarios
HUAWEI ME909u-521 LTE LGA Module
Contents
10 Module Powering Off and Resetting Application Scenarios
Issue
1.1.2 Definitions
1 Overview
1.1 Conventions and Definitions
1.1.1 Conventions
1.2 Organization of This Document
Application
Mobile equipment
1.3 Basic AT Command Processing Principles
1.3.2 AT Command Processing Mechanism
1.3.1 Ports
HUAWEI ME909u-521 LTE LGA Module
Return results of AT command
Return results of AT command
Issue 01
HUAWEI ME909u-521 LTE LGA Module
All AT commands entered during
All AT commands entered
Issue
AT Command
Timeout Duration
AT+COPS=1,2,23415 OK
2. If the module returns failure information, go to step
2.1.1 Reference Process
2.1.2 Troubleshooting
2 Initialization Application Scenarios
2.1 Startup Indication SYSSTART
2.2.2 Troubleshooting
2.2 Querying Basic Information
2.2.1 Reference Process
2.3.1 Reference Process
2.3 Network Service Operations
Application Guide
2.3.2 Troubleshooting
Issue
HUAWEI ME909u-521 LTE LGA Module
3 Network Searching and Registration Application Scenarios
3.1 Searching and Registering Network
3.1.1 Reference Process
Network Searching and Registration Application
Enable automatic search for networks. AT+COPS=0
Issue
HUAWEI ME909u-521 LTE LGA Module
Scenario
3.1.2 Troubleshooting
Possible Error
Solution
4 ECM Application Scenarios
4.1 ECM Dialing
4.1.1 Reference Process
4.1.2 Troubleshooting
4.2 Querying the Dial-up Connection State
4.2.1 Reference Process
4.3.1 Reference Process
4.3 Disconnecting the Dial-up Connection
4.2.2 Troubleshooting
4.3.2 Troubleshooting
5.1 Overview
5 SMS Application Scenarios
SMS initialization
Figure 5-1 Example of data encoded in PDU format of submitted type
Figure 5-2 shows the general SMS process
Figure 5-2 General SMS process
5.2.1 Reference Process
5.2 Initializing SMS
Set the short message format to PDU
SMS Application Scenarios
Issue
HUAWEI ME909u-521 LTE LGA Module
Application Guide
5.2.2 Troubleshooting
5.3 Sending Short Message
5.3.1 Reference Process
HUAWEI ME909u-521 LTE LGA Module
Send a PDU message with the wrong service center address
The message is successfully sent
The message is unsuccessfully sent
5.3.2 Troubleshooting
0031000B813109731147F4 0000FF04F4F29C0E ESC
0891683108608805F931000B 813109731147F40000FF04F4 F29C0Ectrl-Z
5.4.1 Reference Process
5.4 Reading Short Messages
All messages
5.4.2 Troubleshooting
5.5 Deleting Short Messages
5.5.1 Reference Process
5.5.2 Troubleshooting
invalid memory
index
6.2.1 Reference Process
6 Phonebook Application Scenarios
6.1 Overview
6.2 Memory Operations
Query the current phonebook storage AT+CPBS? +CPBS“ON”,0,0 OK
6.2.2 Troubleshooting
Initializing the phonebook Start Query the available
storage types for the phonebook AT+CPBS=? +CPBS“SM”,“EN”,“ON” OK
6.3.1 Reference Process
6.3 Reading Phonebook Entries
Initialize the phonebook
6.3.2 Troubleshooting
6.3.3 Writing/Deleting Phonebook Entries 6.3.4 Reference Process
6.3.5 Troubleshooting
6.4.1 Reference Process
6.4 Searching for Phonebook Entries
6.4.2 Troubleshooting
6.5 Querying User Number
6.5.1 Reference Process
6.6 Setting the TEs Character Sets
6.5.2 Troubleshooting
6.6.1 Reference Process
1,0123456789,129,004800550041
6.6.2 Troubleshooting
AT+CPBR=1
+CPBR
7 SIM Operation Application Scenarios
7.1 PIN Operations
7.1.1 Reference Process
Either CPIN or +CPIN can be used to authenticate the PIN
7.1.2 Troubleshooting
7.2.1 Reference Process
7.2 CRSM Command
If pathid is not contained in the command, the module will prefer to access the files with the same FID in the current directory
Scenario
7.2.2 Troubleshooting
Possible Error
Solution
8 Sleeping and Waking Up Application Scenarios
Pin name
8.1 Hardware Interfaces
Diagram
Interface
Application Guide
8.2 Sequence Diagram
Issue 01
HUAWEI ME909u-521 LTE LGA Module
8.3.1 Principle
8.3 Software Interfaces
Figure 8-5 Currency state when the module is in sleep mode
8.3.2 USB and Sleep
8.3.5 Host Woken up by Module
Remotely Waking up the Host Using USB
8.3.3 UART and Sleep
8.3.4 Module Wake-up
WAKEUPOUT Waking up the Host
HS Hub
HS Device
8.4.1 Hardware Connection
8.4.2 Software Procedure
Remote Wake-up Configuration
8.4 Application Scenarios System with USB Connection only
8.5.1 Hardware Connection
8.5.2 Software Procedure
8.5 Application Scenarios System with USB and WAKEUPOUT
8.4.3 Advantages
8.5.3 Advantages
8.6 System with Other Connection Methods
9.2 Thermal Protection Process
9.1 Pre-configuration
9.1.1 Troubleshooting
9 Thermal Protection Application Scenarios
Thermal Protection Application Scenarios
Issue
HUAWEI ME909u-521 LTE LGA Module
Application Guide
10.1 Restarting the ME
10 Module Powering Off and Resetting Application Scenarios
10.2 Power Off ME
10.1.2 Troubleshooting
HUAWEI ME909u-521 LTE LGA Module
10.2.2 Troubleshooting
Module Powering Off and Resetting Application
Issue
11 Appendix
11.1 Relative Documents
11.2 Acronyms and Abbreviations
IMEI