Huawei 目录 (Contents) ME909u 523 LTE LGA Module Application Guide

HUAWEI ME909u-523 LTE LGA Module Application Guide-(V100R001_04, English)

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HUAWEI ME909u-523 LTE LGA Module
V100R001

Application Guide

Issue

Date

2014-12-08

Copyright © Huawei Technologies Co., Ltd. 2014. All rights reserved.
No part of this manual may be reproduced or transmitted in any form or by any means without prior written
consent of Huawei Technologies Co., Ltd. and its affiliates ("Huawei").
The product described in this manual may include copyrighted software of Huawei and possible licensors.
Customers shall not in any manner reproduce, distribute, modify, decompile, disassemble, decrypt, extract,
reverse engineer, lease, assign, or sublicense the said software, unless such restrictions are prohibited by
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Trademarks and Permissions
,
, and
are trademarks or registered trademarks of Huawei Technologies Co., Ltd.
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Other trademarks, product, service and company names mentioned may be the property of their respective
owners.

Notice
Some features of the product and its accessories described herein rely on the software installed, capacities
and settings of local network, and therefore may not be activated or may be limited by local network
operators or network service providers.
Thus, the descriptions herein may not exactly match the product or its accessories which you purchase.
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HUAWEI ME909u-523 LTE LGA Module
Application Guide

About This Document

About This Document
Revision History
Document
Version

Date

2014-05-22

2014-09-05

Chapter

Description
Creation

2.3.1

Updated reference process

Added chapter 15:
FOTA Application Scenarios

2014-10-30

12.1.4

Updated the description of step 1

2014-12-08

8.3.2

Updated notes of USB and sleep

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Contents
1 Overview......................................................................................................................................... 9
1.1 Conventions and Definitions ............................................................................................................ 9
1.1.1 Conventions ............................................................................................................................. 9
1.1.2 Definitions ................................................................................................................................ 9
1.2 Basic AT Command Processing Principles .................................................................................... 10
1.2.1 Ports ...................................................................................................................................... 10
1.2.2 AT Command Processing Mechanism................................................................................... 10
1.2.3 Recommended Timeout Mechanism for AT Commands Processed by a Host..................... 13

2 Initialization Application Scenarios ....................................................................................... 15
2.1 Startup Indication ^SYSSTART ...................................................................................................... 15
2.1.1 Reference Process ................................................................................................................ 15
2.1.2 Troubleshooting ..................................................................................................................... 15
2.2 Querying Basic Information ............................................................................................................ 16
2.2.1 Reference Process ................................................................................................................ 16
2.2.2 Troubleshooting ..................................................................................................................... 16
2.3 Network Service Operations .......................................................................................................... 17
2.3.1 Reference Process ................................................................................................................ 17
2.3.2 Troubleshooting ..................................................................................................................... 18

3 Network Searching and Registration Application Scenarios............................................. 19
3.1 Searching and Registering Network............................................................................................... 19
3.1.1 Reference Process ................................................................................................................ 19
3.1.2 Troubleshooting ..................................................................................................................... 21

4 ECM Application Scenarios ...................................................................................................... 22
4.1 ECM Dialing ................................................................................................................................... 22
4.1.1 Reference Process ................................................................................................................ 22
4.1.2 Troubleshooting ..................................................................................................................... 23
4.2 Querying the Dial-up Connection State .......................................................................................... 23
4.2.1 Reference Process ................................................................................................................ 23
4.2.2 Troubleshooting ..................................................................................................................... 24
4.3 Disconnecting the Dial-up Connection ........................................................................................... 24
4.3.1 Reference Process ................................................................................................................ 24
4.3.2 Troubleshooting ..................................................................................................................... 24

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5 SMS Application Scenarios ...................................................................................................... 25
5.1 Overview ........................................................................................................................................ 25
5.2 Initializing SMS ............................................................................................................................... 27
5.2.1 Reference Process ................................................................................................................ 27
5.2.2 Troubleshooting ..................................................................................................................... 30
5.3 Sending Short Messages ............................................................................................................... 30
5.3.1 Reference Process ................................................................................................................ 30
5.3.2 Troubleshooting ..................................................................................................................... 32
5.4 Reading Short Messages ............................................................................................................... 32
5.4.1 Reference Process ................................................................................................................ 32
5.4.2 Troubleshooting ..................................................................................................................... 34
5.5 Deleting Short Messages ............................................................................................................... 35
5.5.1 Reference Process ................................................................................................................ 35
5.5.2 Troubleshooting ..................................................................................................................... 36

6 Phonebook Application Scenarios .......................................................................................... 37
6.1 Overview ........................................................................................................................................ 37
6.2 Memory Operations ........................................................................................................................ 37
6.2.1 Reference Process ................................................................................................................ 37
6.2.2 Troubleshooting ..................................................................................................................... 38
6.3 Reading Phonebook Entries .......................................................................................................... 39
6.3.1 Reference Process ................................................................................................................ 39
6.3.2 Troubleshooting ..................................................................................................................... 40
6.4 Writing/Deleting Phonebook Entries .............................................................................................. 41
6.4.1 Reference Process ................................................................................................................ 41
6.4.2 Troubleshooting ..................................................................................................................... 42
6.5 Searching for Phonebook Entries .................................................................................................. 43
6.5.1 Reference Process ................................................................................................................ 43
6.5.2 Troubleshooting ..................................................................................................................... 44
6.6 Querying User Number .................................................................................................................. 44
6.6.1 Reference Process ................................................................................................................ 44
6.6.2 Troubleshooting ..................................................................................................................... 44
6.7 Setting the TE's Character Sets ..................................................................................................... 45
6.7.1 Reference Process ................................................................................................................ 45
6.7.2 Troubleshooting ..................................................................................................................... 46

7 SIM Operation Application Scenarios .................................................................................... 47
7.1 PIN Operations ............................................................................................................................... 47
7.1.1 Reference Process ................................................................................................................ 47
7.1.2 Troubleshooting ..................................................................................................................... 49
7.2 CRSM Command ........................................................................................................................... 49
7.2.1 Reference Process ................................................................................................................ 49
7.2.2 Troubleshooting ..................................................................................................................... 51

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8 Sleeping and Waking Up Application Scenarios ................................................................. 52
8.1 Hardware Interfaces ....................................................................................................................... 53
8.2 Sequence Diagram......................................................................................................................... 54
8.3 Software Interfaces ........................................................................................................................ 56
8.3.1 Principle ................................................................................................................................. 56
8.3.2 USB and Sleep ...................................................................................................................... 58
8.3.3 UART and Sleep .................................................................................................................... 58
8.3.4 Module Wake-up.................................................................................................................... 58
8.3.5 Host Woken up by Module .................................................................................................... 59
8.4 Application Scenarios: System with USB Connection only ............................................................ 60
8.4.1 Hardware Connection ............................................................................................................ 60
8.4.2 Software Procedure ............................................................................................................... 60
8.4.3 Advantages ............................................................................................................................ 61
8.5 Application Scenarios: System with USB and WAKEUP_OUT ...................................................... 61
8.5.1 Hardware Connection ............................................................................................................ 61
8.5.2 Software Procedure ............................................................................................................... 61
8.5.3 Advantages ............................................................................................................................ 62
8.6 System with Other Connection Methods ........................................................................................ 62

9 Thermal Protection Application Scenarios ............................................................................ 63
9.1 Pre-configuration ............................................................................................................................ 63
9.1.1 Troubleshooting ..................................................................................................................... 63
9.2 Thermal Protection Process ........................................................................................................... 63

10 Module Powering Off and Resetting Application Scenarios ........................................... 65
10.1 Restarting the ME......................................................................................................................... 65
10.1.1 Reference Process .............................................................................................................. 65
10.1.2 Troubleshooting ................................................................................................................... 65
10.2 Powering Off ME .......................................................................................................................... 65
10.2.1 Reference Process .............................................................................................................. 65
10.2.2 Troubleshooting ................................................................................................................... 66

11 GPS Application Scenarios ..................................................................................................... 67
11.1 Introduction to GPS ...................................................................................................................... 67
11.1.1 GPS Positioning Methods .................................................................................................... 67
11.1.2 GPS Ports ............................................................................................................................ 69
11.2 Standalone Positioning ................................................................................................................. 70
11.3 MSB Positioning Using the User Plane Protocol .......................................................................... 71
11.4 MSA Positioning Using the User Plane Protocol .......................................................................... 72
11.5 XTRA Positioning .......................................................................................................................... 73
11.6 GNSS Positioning ......................................................................................................................... 74

12 Local Upgrade Application Scenarios ................................................................................... 76
12.1 Starting the Local Upgrade ........................................................................................................... 76

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12.1.1 Full Upgrade Flow ............................................................................................................... 76
12.1.2 Launch the Local Upgrade .................................................................................................. 77
12.1.3 Transfer the Upgrade File .................................................................................................... 77
12.1.4 Test ...................................................................................................................................... 78
12.1.5 Reference Process .............................................................................................................. 81
12.1.6 Troubleshooting ................................................................................................................... 82
12.2 Reporting the Local Upgrade State .............................................................................................. 82
12.2.1 Reference Process .............................................................................................................. 82
12.2.2 Troubleshooting ................................................................................................................... 82

13 LED Indication Application Scenarios ................................................................................. 83
13.1 Overview ...................................................................................................................................... 83
13.2 LED Setting Operations ............................................................................................................... 84
13.2.1 Reference Process .............................................................................................................. 84
13.2.2 Troubleshooting ................................................................................................................... 85

14 Serial Port Configuration Application Scenarios ............................................................... 86
14.1 Baud Rate Configuration .............................................................................................................. 86
14.1.1 Reference Process .............................................................................................................. 86
14.1.2 Troubleshooting ................................................................................................................... 86
14.2 Setting Hardware Flow Control .................................................................................................... 87
14.2.1 Reference Process .............................................................................................................. 87
14.2.2 Troubleshooting ................................................................................................................... 87

15 FOTA Application Scenarios .................................................................................................. 88
15.1 FOTA Process .............................................................................................................................. 88
15.1.1 Upgrade Module Firmware Over Air Through Delta Package ............................................. 88
15.1.2 Procedure for FOTA Implementation ................................................................................... 88
15.2 Setting FOTA Mode ...................................................................................................................... 91
15.2.1 Reference Process .............................................................................................................. 91
15.2.2 Troubleshooting ................................................................................................................... 91
15.3 Setting FOTA Connection Parameters ......................................................................................... 92
15.3.1 Reference Process .............................................................................................................. 92
15.3.2 Troubleshooting ................................................................................................................... 92
15.4 Manually Querying for Upgrade Firmware Version ...................................................................... 93
15.4.1 Reference Process .............................................................................................................. 93
15.4.2 Troubleshooting ................................................................................................................... 94
15.5 Periodically Querying the Version ................................................................................................ 95
15.5.1 Reference Process .............................................................................................................. 95
15.5.2 Troubleshooting ................................................................................................................... 95
15.6 Manually Downloading the Version .............................................................................................. 96
15.6.1 Reference Process .............................................................................................................. 96
15.6.2 Troubleshooting ................................................................................................................... 97
15.7 Automatically Downloading the Firmware .................................................................................... 98

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15.7.1 Reference Process .............................................................................................................. 98
15.7.2 Troubleshooting ................................................................................................................... 98
15.8 Using the Resumable Data Transfer Function ............................................................................. 98
15.8.1 Reference Process .............................................................................................................. 98
15.8.2 Troubleshooting ................................................................................................................... 99
15.9 Manually Cancelling the Download .............................................................................................. 99
15.9.1 Reference Process .............................................................................................................. 99
15.9.2 Troubleshooting ................................................................................................................. 100
15.10 Manually Upgrading the Version .............................................................................................. 100
15.10.1 Reference Process .......................................................................................................... 100
15.10.2 Troubleshooting ............................................................................................................... 101
15.11 Automatically Upgrading the Version ........................................................................................ 101
15.11.1 Reference Process .......................................................................................................... 101
15.11.2 Troubleshooting ............................................................................................................... 102

16 Appendix .................................................................................................................................. 103
16.1 Relative Documents ................................................................................................................... 103
16.2 Acronyms and Abbreviations ...................................................................................................... 103

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Overview

This document is intended to provide references for customers to choose appropriate
command sequences to start using the ME909u-523 module in a faster manner. This
document also contains examples and relevant description.
This document will be updated based on customers' requirements.

1.1 Conventions and Definitions
1.1.1 Conventions
Convention

Description

<…>

Value range of AT command parameters

XXXX

Personal Identification Number (PIN), Personal Unlock Key
(PUK), or password

1.1.2 Definitions
Term

Definition

Connected

Indicates that a link has been set up between two
modules or a module and a terminal.

Registered

Indicates that the module is registered with a
LTE/UMTS/GSM network.

Module

HUAWEI LTE module

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Application

Overview

Mobile equipment

network

1.2 Basic AT Command Processing Principles
1.2.1 Ports
The ME909u-523 module provides four ports to interact with its host:


MODEM port: simulated using USB, for AT command interaction and
establishing data connection.
Port name: HUAWEI Mobile Connect-Modem



PCUI port: simulated using USB, for AT command interaction only.
Port name: HUAWEI Mobile Connect-PCUI Interface



ECM port: simulated using USB, for establishing communication connection.
Port name: CDC Ethernet Control Model (ECM)



NMEA port: simulated using USB, sending unsolicited indications for NMEA
positioning data and sending GPS AT command.
Port name: HUAWEI Mobile Connect-GPS Interface
NOTE

The ME909u-523 module does not support the modem dialing-up.

The ME909u-523 also provides a port for debugging:


DIAG port: Simulated using USB, for DIAG (diagnostic) command interaction
(mainly used to debug modules at present).
Port name: HUAWEI Mobile Connect-Application Interface

A host controls a module using AT commands. If AT commands are unavailable, a
module can be deemed as unavailable.

1.2.2 AT Command Processing Mechanism
A module processes AT commands from the ports (MODEM, PCUI, GPS and UART)
in series. An AT command can be processed when and only when the previous AT
command processing has been completed. If the module is processing an AT
command, a new AT command from the same port will be ignored and other
commands from other ports will be buffered until the current AT command is
processed.

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This rule also applies to COM ports converted from USB ports.
The processing of an AT command starts when the AT command is entered from the
TE, and ends when the UE (the module) returns all the results in response the
command.
Figure 1-1 AT command processing sequence diagram

AT command 1
Process AT
command 1
AT command 2
Ignore AT
command 2
Return results of AT command 1

AT command 3
Process AT
command 3
Return results of AT command 3

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Overview

Example:
AT +CPIN ?
+CPIN : READY

OK
AT +CMGL =4
+CMGL : 0,3,,19
07813108608805
+CMGL : 1,2,,18
07813108608805
+CMGL : 2,2,,18
07813108608805
+CMGL : 3,2,,28
07813108608805
D36CBC 168
+CMGL : 4,2,,24
07813108608805
1A
+CMGL : 5,2,,22
07813108608805
+CMGL : 6,2,,22
07813108608805

All AT commands entered during
this period of time will be
ignored.

F911320 B813109730116 F20000 A705B3D84C4603
F931FF0B813109730155 F30000 A704F4F29C0E
F931FF0B813109730155 F30000 A704F4F29C0E

All AT commands entered
F931FF0B813109730155
F30000
A71061 of
F69CAC
2EBF 69B5FA 4
during
this period
time will

be ignored.
F931FF0B813109730155 F30000 A70BB 05C2D5DB 7C1D4ECB 4

F931FF0B813109730155 F30000 A7096 E333 B8DCBE 77079

F931FF0B813109730155 F30000 A70930598 D26A7DBDF 68

Some special AT commands can be aborted by new AT commands. Such special
commands are called abortive commands.
The ME909u-523 supports the following abortive AT commands:


The AT+COPS Set command



AT+CLCK

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Example:

AT+COPS=1,2,23415
OK

Before the results ofAT+COPS
is returned, enter any characters
(such as "AT"), the module will
terminate the processing of
AT+COPS and return OK. The
entered characters are used to
abort the command only .

Some commands can be executed when SIM card is inserted. It would return to SIM
failure if SIM card is not inserted. For more information, see Property Description of
related AT in HUAWEI ME909u-523 LTE LGA Module AT Command Interface Specification.
Example:
AT+CREG?
+CME ERROR: SIM failure
NOTE

SIM failure indicates that SIM card is not inserted.

1.2.3 Recommended Timeout Mechanism for AT Commands
Processed by a Host
A module processes AT commands in series. Do not send another AT command
before the result for the current command is returned or the current command times
out (except when the current command is an abortive AT command). The following
table lists AT command timeout durations (starting from the time when an AT
command arrives at a port).
Table 1-1 AT command timeout duration
AT Command

Timeout Duration

General AT commands

30s

AT+CMSS/AT+CMGS (used to send text
messages)

60s

AT+COPS=? (used to search for networks)

120s

After an AT command times out, it is recommended that the host check whether the
module is functioning normally. The following procedure is provided for your
reference:
1.

The host sends AT to the module.

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

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

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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.

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.

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Initialization Application Scenarios

2.1 Startup Indication ^SYSSTART
2.1.1 Reference Process
Command

Description
A module, without solicitation, presents ^SYSSTART to
its host to indicate that the module is starting.

^SYSSTART

Indicate that a module is starting.

NOTE


^SYSSTART is presented only when a module is starting and will not be presented after a
module has started.



^SYSSTART is presented only after the radio frequency (RF) initialization completes and
will not be presented in offline mode.



^SYSSTART is only report on URAT port, USB port not demanded.

2.1.2 Troubleshooting
Scenario

Possible Error
Information

Solution

The module presents
^SYSSTART during startup.
After that, the module
presents ^SYSSTART again.

Indicate that the
module has been
reset.

If ^SYSSTART is presented
repeatedly, send the module
to the specified repair center.

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Initialization Application Scenarios

2.2 Querying Basic Information
2.2.1 Reference Process
Command

Description

AT+GMR/CGMR

Query software version.

Software version

Software version. e.g. 11.430.37.00.00

OK
AT+GMI/CGMI

Query manufacturer identification.

Manufacturer
Identification

For example: Huawei Technologies Co., Ltd.

OK
AT+GMM/CGMM

Query model identification.

Model identification

For example: ME909u-523

OK
AT+GSN/CGSN

Query product IMEI.

IMEI

For example: 865261010004010

NOTE

The previously listed commands are query commands and cannot be used to configure
settings.

2.2.2 Troubleshooting
Scenario

AT+GSN/CGSN

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Possible Error
Information

Solution

+CME ERROR: memory
failure

This error occurs when a
module's IMEI is not specified.
This problem is solved after
the IMEI is written into the
module.

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Initialization Application Scenarios

2.3 Network Service Operations
2.3.1 Reference Process
Command

Description

AT+CFUN?

Query a module's current mode. 1 indicates
online mode.

+CFUN: 1
OK
Query whether a module's SIM card is
password protected. READY indicates that
the SIM card is ready.

AT+CPIN?

+CPIN: READY
OK
AT^HCSQ?

Query the network signal quality.

^HCSQ: "WCDMA",30,30,58
OK
AT+COPS?

Return the current network selection mode,
information about the operator with which
the module is registered, and the wireless
access standard.

+COPS: "Network status
information"

For example: +COPS: 1,0, "China Mobile
Com"

OK
AT+COPS=0

Automatically search for networks.

OK
AT+CREG?

Query the state of the currently registered
network.

+CREG: 0,1
OK
AT+CREG=1

Set the +CREG unsolicited indication.

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AT+CGDCONT=1,"IP","CMNET"[1]

Initialization Application Scenarios

Set specific PDP context. It is an example of
packet data service settings. Set the PDP
context required by packet data service dialup.

NOTE

[1] Set the correct APN when data service is initialized.

2.3.2 Troubleshooting
Scenario

Possible Error Information

Solution

AT+COPS?

+CME ERROR: SIM failure

No SIM card is detected. Insert
a SIM card.

AT+CREG?

+CME ERROR: SIM failure

No SIM card is detected. Insert
a SIM card.

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Network Searching and Registration Application
Scenarios

Network Searching and Registration
Application Scenarios

3.1 Searching and Registering Network
3.1.1 Reference Process
Command

Description

AT+COPS=0

Enable automatic search for networks.

OK
AT+COPS=1,2,"46000"

Manual search for the appointed network.

OK
Search for all networks, and return the
networks.

AT+COPS=?
OK

Enable the unsolicited indication when
network registration state changes.

AT+CREG=2
OK
AT^SYSCFGEX="00",3FFFFFFF
,1,2,7FFFFFFFFFFFFFFF,,

Set the system mode, network access order,
frequency band, roaming support, domain,
and other features.

OK
AT^SYSINFOEX

Query the system service state, domain,
roaming status, and system mode.

^SYSINFOEX:
1,0,1,255,,3,"WCDMA",41,"WCDMA"
OK
AT^HCSQ?

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Query the signal quality.

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Command

Network Searching and Registration Application
Scenarios

Description

^HCSQ: "WCDMA",15,12,46
OK

Figure 3-1 Automatic search for networks

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Network Searching and Registration Application
Scenarios

Figure 3-2 Manual search for networks

3.1.2 Troubleshooting
Scenario

Possible Error
Information

Solution

AT+COPS?

+CME ERROR: SIM
failure

No SIM card is detected. Insert
a SIM card.

AT+CREG?

+CME ERROR: SIM
failure

No SIM card is detected. Insert
a SIM card.

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ECM Application Scenarios

4.1 ECM Dialing
4.1.1 Reference Process
Command

Description

AT^NDISDUP=?

Check the parameter range supported by
the command.

^NDISDUP: (1-16),(0-1)
OK
AT^NDISDUP=1,1,"1234"

Set up a dial-up connection using the
APN provided by the network server.

The command is successfully executed.

^NDISSTAT: 1,,,"IPV4"

Report the dial-up connection state.

AT^NDISDUP=1,1,"4321","huawei",
"huawei",1

Set up a dial-up connection using the
account, password, and authentication
mode provided by the network server.

The command is successfully executed.

^NDISSTAT: 1,,,"IPV4"

Report the dial-up connection state.

The process of obtaining the IP address:
1.

After host application sending AT^NDISDUP command to launch or terminal the
ECM connection, Huawei module will report the ^NDISSTAT command to
indicate the connection state.

Host application can get the connection state from ^NDISSTAT report, if the
connection state updated, the host application should to launch the dhcp client to
update the ECM IP address or disable the ECM.

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ECM Application Scenarios

Host application also can send AT command AT^NDISSTATQRY? to query the
current ECM connection state, and determine to update or disable the ECM by
the dhcp client.

4.1.2 Troubleshooting
Scenario

Possible Error
Information

Solution

AT^NDISDUP=1,1,"1234"

+CME ERROR: SIM
failure

No SIM card is
detected. Insert a SIM
card.
NDISEND indicates the
failure reason during
the dial-up.

OK
AT^NDISDUP=1,1,"4321",
"huaei","huawei",1

^NDISSTAT: 0,33,,"IPV4"
^NDISEND:1,29

NDISEND indicates the
failure reason during
the dial-up.

OK
AT^NDISDUP=1,1,"abcd"

29 indicates that the
authenticated
information is not
correct.

^NDISSTAT: 0,33,,"IPV4"
^NDISEND:1,33

33 indicates that
request service is not
specified.
In this case, the
network don not
support this APN
"abcd".

4.2 Querying the Dial-up Connection State
4.2.1 Reference Process
Command

Description

AT^NDISSTATQRY?

Query the dial-up connection state.

^NDISSTATQRY: 0,0,,"IPV4"

Report that the connection is not set up.

OK
AT^NDISSTATQRY?

Query the dial-up connection state.

^NDISSTATQRY: 1,,, "IPV4"

Report that the connection is set up.

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ECM Application Scenarios

4.2.2 Troubleshooting
None

4.3 Disconnecting the Dial-up Connection
4.3.1 Reference Process
Command

Description

AT^NDISDUP=1,0

Disconnect the dial-up connection.

The command is successfully executed.

^NDISSTAT:0,,,"IPV4"

IPv4 changes from the connected state to
the disconnected state.

4.3.2 Troubleshooting
None

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SMS Application Scenarios

5.1 Overview
Short Message Service (SMS) is a text messaging service using a service center (SC)
to transfer short text messages between MEs and Short Message Entities (SMEs).
A message must contain the following information before it is sent:
For a PDU mode message:


Length of TPDU package



Message content: To compose or send a PDU mode message, the message
must contain all the message attributes and be encoded in PDU format. A PDU
consists of the following:
−

Service Center Address (SCA): composed of the address length, SCA type
and SCA reverse byte.

−

First octet: contains the message type indicator, TP-RP, TP-UDHI, TP-SRR,
TP-VPF, TP-RD, and TP-MTI.

−

Short text message statement.

−

Destination address: consisting of the destination address, address length
and destination address type.

−

Protocol identifier.

−

Data encoding scheme.

−

Validity duration.

−

Data length.

−

User data: consisting of the user data header and the data encoded in PDU
format.

Figure 5-1 shows an example of data encoded in PDU format of submitted type.

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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
SMS

Start

SMS initialization

Write short
messages

Delete short
messages

Read short
messages

Receive
short messages

Send short
messages

Status report

End

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5.2 Initializing SMS
5.2.1 Reference Process
Command

Description

AT+CSCA?

Query the SMSC address.

+CSCA:
"13800688509",129
OK
AT+CSCA="+8613800755
500"

Set the SMSC address to the SMSC number of
China Mobile's Shenzhen Branch.

OK
AT+CSMS?

Query the short message service type.

+CSMS: 0,1,1,1
OK
Query the configuration of the new message
indications to TE.

AT+CNMI?
+CNMI: 0,0,0,0,0
OK
AT+CNMI=2,1,2,2,0

Configure the new message indications to TE.

OK
AT+CPMS?

Query the preferred short message storage.

+CPMS: "SM",12,20,"SM",12,20,"SM",12,20
OK
AT+CPMS="SM"

Set SM as short message storage medium.

OK
AT+CGSMS?

Query the MO SMS bearer domain.

+CGSMS: 1
OK
AT+CMGF?

Query the short message format.

+CMGF: 0

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Command

SMS Application Scenarios

Description

OK
AT+CMGF=0

Set the short message format to PDU.

Use the AT+CMGF command to set short message format: AT+CMGF=0 sets the
short message format to PDU.
The SMSC address provided by the service provider must be specified. In PDU mode,
the SMSC address is contained in the PDU packets. Therefore, in PDU mode, the
AT+CSCA command is optional.
To use the SMS features specified in the GSM 07.05 Phase 2+, the AT+CSMS
command must be used to enable the features.
Use the AT+CNMI command to set the unsolicited indications.
Use the AT+CPMS command to select the preferred short message storage (SIM or
ME). The ME909u-523 supports only the SM (SIM card) storage.
Use the AT+CGSMS command to select the MO SMS bearer domain (PS or CS
domain). For ME909u-523, the CS domain is the preferred MO bearer domain.
Figure 5-3 SMS initialization process – part 1
SMS initialization

Start

Set the SMSC address to the SMSC
number of China Mobile's
Shenzhen Branch.

Query the SMSC
address.
AT+CSCA?

AT+CSCA="+8613800755500"

Example: SMSC
address is not specified.
+CSCA: "",129
OK

OK
Require the message
service type.

Set the message
service type.
AT+CSMS=1

AT+CSMS?

+CSMS: 0,1,1,1

+CSMS: 1,1,1

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Figure 5-4 SMS initialization process – part 2
*
Enable the notification
of new messages.

Query the unsolicited
indication state.

AT+CNMI=2,1,2,2,0

AT+CNMI?
Default values

+CNMI: 0,0,0,0,0

OK
Query the preferred storage
for the current message.

AT+CPMS?

+CPMS: "SM",13,20,"SM",13,20,"SM",13,20
OK

AT+CGSMS?

+CGSMS: 1
OK

AT+CMGF=0

Figure 5-5 SMS initialization process – part 3
*
AT+CMGF?

+CMGF:0

AT+CMGF=0

End

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5.2.2 Troubleshooting
Scenario
Error information is
returned in response to
one of the previous
commands.

Possible Error
Information

Solution

+CME ERROR: SIM
PIN required

Enter the correct PIN.

+CMS ERROR: SIM
busy

SIM card initialization has not
completed. Try again later.

5.3 Sending Short Messages
5.3.1 Reference Process
Command

Description

AT+CMGF=0

Set the short message format to PDU.

OK
AT+CSCA?

Query the SMSC address.

+CSCA: "13800688509",129
OK

>0031000B813109731147F4
0000FF04F4F29C0E\x0A

Send a PDU message without the service center
address. The value of SMSC address is the setting
of +CSCA command.

+CMGS: 168

The message is successfully sent.

AT+CMGS=18

OK
AT+CMGS=18
>0891683108608805F93100
0B813109731147F40000FF0
4F4F29C0E\x1A
+CMGS: 169

Send a PDU message with the correct service
center address.

The message is successfully sent.

OK
AT+CMGS=18
>0891683108608805F03100
0B813109731147F40011FF0
4F4F29C0E\x1A

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Send a PDU message with the wrong service
center address.

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Command

Description

+CMS ERROR: Network out
of order

The message is unsuccessfully sent.

Messages in PDU format must be converted using external tools or users' software.
Tools for encoding and parsing messages in PDU format are available on the Internet.
Figure 5-6 Sending short messages in PDU format
Sending messages in PDU format

Start
Send a short message
(given that the PDU length is 18)

SMS initialization
AT+CMGS=18

PDU message
without SCA

Press to cancel
the command

Press to send
the command.

0031000B813109731147F4
0000FF04F4F29C0E

0891683108608805F931000B
813109731147F40000FF04F4
F29C0E

Message sent
successfully

Example: Message
not sent
OK

Message sent
unsuccessfully
+CMGS:1
OK

+CMS ERROR:
Network out of
order

End

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5.3.2 Troubleshooting
Scenario

Possible Error
Information

Solution

Error information is
returned in response
to one of the previous
commands.

+CMS ERROR:
Network out of order

Check the validity of the
service center address or the
state of the current network.

5.4 Reading Short Messages
5.4.1 Reference Process
Command

Description

AT+CMGL=0

List all received unread messages.

+CMGL: 2,0,,48
0891683108608805F9040D916831
09732097F2000001432619001001
F506215744FD3D1A0E930C8429
6D9EC370BFDE86C2F23228FFA
EFF00

The format of short messages can refer to
the AT+CMGL command.

+CMGL: 4,0,,64
0891683108608805F9040D916831
09732097F2000001403261310500
32506215744FD3D1A0E930C8429
6D9EC370BFDBE83C2B0380F6A
97416FF7B80C6AVFE5E510
OK
Read the message stored in the message
storage location 4.

AT+CMGR=4
+CMGR: 1,,64
0891683108608805F9040D916831
09732097F2000001403261310500
32506215744FD3D1A0E930C8429
6D9EC370BFDBE83C2B0380F6A
97416FF7B80C6AVFE5E510

The format of short messages can refer to
the AT+CMGR command.

There are two methods to read short messages:

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

SMS Application Scenarios

Method 1: Use the AT+CMGL command to list the messages that are in
specified state and stored in the preferred message storage. The following table
describes the message states. If the message sate is received unread
messages, the REC UNREAD state will be changed to REC READ after the
AT+CMGL command is executed.

Message State

PDU Mode

Received unread messages

Received read messages

Stored unsent messages

Stored sent messages

All messages



Method 2: Use the AT+CMGR command to read a message from a specified
storage location in the message storage. If the message is a received unread
message, its state will be changed to REC READ after it is read using the
AT+CMGR command.

You can use the AT+CMGL command to list all short messages so that you can view
the messages' storage locations.

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Figure 5-7 Reading short messages
Reading short messages

Start
List received unread
messages in PDU format

AT+CMGL=0

+CMGL:,0,,
(messages in PDU format)
......
+CMGL:,0,,
(messages in PDU format)

AT+CMGR=n

PDU format
+CMGR:n,,
(messages in PDU format)
OK

End

5.4.2 Troubleshooting
Scenario

Possible Error
Information

Solution

Error information is
returned in response
to one of the previous
commands.

+CMS ERROR: invalid
memory index

Check the validity of the index.

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5.5 Deleting Short Messages
5.5.1 Reference Process
Command

Description

AT+CMGF=0

Set the message format to PDU mode.

OK
AT+CMGL=4

List all short messages (PDU mode).

+CMGL: 6,2,,30
0011000A9171798762130000A713C8329BFD6681D0EF3B282C2F83F2EFFA0F
+CMGL: 11,1,,36
0791947106004013240C9194715982699000003080413115748013C8329BFD66
81D0EF3B282C2F83F2EFFA0F
OK
AT+CMGD=1

Delete the message stored in storage location 1.



Either all messages stored in the preferred message storage or a message
stored in the specified storage location in the preferred message storage can be
deleted.



All read or unread messages that have been received can be deleted.



If no messages are stored in the preferred message storage, "OK" is returned
when the action to delete messages is completed.



Meanings of the DelFlag value:

Issue 04 (2014-12-08)

−

1: Delete all read messages in the preferred message storage, and keep the
unread, sent and unsent messages.

−

2: Delete all read and sent messages in the preferred message storage, and
keep the unread and unsent messages.

−

3: Delete all read, sent, and unsent messages in the preferred message
storage, and keep the unread messages.

−

4: Delete all messages in the preferred message storage, including the
unread messages.

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Figure 5-8 Deleting short message
Deleting short messages

Start
Prerequisite:
SMS has been initialized.
Example: Lists all short
messages in PDU format.
AT+CMGL=4

+CMGL: 1,
07919471060040
+CMGL: 2,
07919471060040
......

Delete the message
stored in
location n in the preferred
storage.

Equivalent to
AT+CMGD=n

AT+CMGD=n

X:(0-999)

AT+CMGD=n,0

AT+CMGD=x,DelFlag

+CMSERROR:

invalid memory
index

End

5.5.2 Troubleshooting
Scenario

Possible Error
Information

Solution

Error information is
returned in response
to one of the previous
commands.

+CMS ERROR: invalid
memory index

Check the validity of the index.

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Phonebook Application Scenarios

6.1 Overview
As a product embedded into a host, the phonebook scenarios include that read, write,
query and delete the phonebook entries in the SIM card.
Read Phonebook: use the AT+CPBR command to read phonebook entries.
Write phonebook: use the AT+CPBW command to save the phonebook entries into
the SIM card.
Delete phonebook: use AT+CPBW command to delete the phonebook entries in the
SIM card.

6.2 Memory Operations
6.2.1 Reference Process
Command

Description

AT+CPBS=?

Query the current storage type.

+CPBS: ("SM","EN","ON")
OK
AT+CPBS="SM"

Set the current storage type to "SM".

OK
241 indicates that 241 entries have been
stored in the storage. 250 indicates that the
maximum storage capacity of the current
storage ("SM") is 250 entries.

AT+CPBS?

+CPBS: "SM",241,250
OK

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Note that the AT commands for reading and writing phonebook entries can be used
only after the phonebook storage is selected. To select a phonebook storage, use the
AT+CPBS command.
Figure 6-1 Initializing the phonebook
Initializing the phonebook

Start
Query the available
storage types for the phonebook.
AT+CPBS=?

+CPBS:(“SM”, “EN”,“ON”)
OK
Query the current phonebook storage.

AT+CPBS?

+CPBS:“ON”,0,0
OK
Select SM as the storage type
AT+CPBS=“SM”

End

6.2.2 Troubleshooting
Scenario

Error information is
returned in response to
one of the previous
commands.

Issue 04 (2014-12-08)

Possible Error
Information

Solution

+CME ERROR: SIM
busy

Phonebook initialization has
not completed. Try again
later.

+CME ERROR: SIM PIN
required

Enter the correct PIN.

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Scenario

Phonebook Application Scenarios

Possible Error
Information

Solution

+CME ERROR: SIM
PUK required

Enter the correct PUK.

6.3 Reading Phonebook Entries
6.3.1 Reference Process
Command

Description

AT+CPBS?

Query the phonebook storage
selection and the maximum number
of entries that can be stored.

+CPBS: "SM",9,20
OK
AT+CPBR=1,20

List all phonebook entries by their
indexes.

+CPBR: 1,"+491765864491",145,"John Smith"
+CPBR: 2,"+44545896638",145,"Paul Williams"
+CPBR: 3,"+44556565657",145,"Joe Anderson"
+CPBR: 4,"+445636934485",145,"Oscar Thomso”
+CPBR: 5,"+445565656899",145,"Hannah Adams"
+CPBR: 6,"+447982865563",145,"Samantha Young"
+CPBR: 7,"+449585315798",145,"Alexis Wright"
+CPBR: 8,"+445415454646",145,"Abigail Cox"
+CPBR: 12,"+446565689115",145,"Kyla Clark"
OK

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Figure 6-2 Reading phonebook entries

6.3.2 Troubleshooting
Scenario

Error information is
returned in response
to one of the previous
commands.

AT+CPBR=

Issue 04 (2014-12-08)

Possible Error
Information

Solution

+CME ERROR: SIM
busy

Phonebook initialization has
not completed. Try again later.

+CME ERROR: SIM PIN
required

Enter the correct PIN.

+CME ERROR: SIM
PUK required

Enter the correct PUK.

+CME ERROR: invalid
index

The index is invalid. Check
that index 1 is within the
supported range.

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Scenario

AT+CPBR=
,

AT+CPBR=

AT+CPBR=
,

Phonebook Application Scenarios

Possible Error
Information

Solution

+CME ERROR: invalid
index

The index is invalid. Check
that index 1 and index 2 are
within the supported range and
that index 1 is not greater than
index 2.

+CME ERROR: not
found

No entries are found in the
storage locations in index 1.
Check that there have been
entries successfully written into
these locations.

+CME ERROR: not
found

No entries are found in the
storage locations between
index 1 and index 2. Check
that there have been entries
successfully written into these
locations.

6.4 Writing/Deleting Phonebook Entries
6.4.1 Reference Process
Command

Description

AT+CPBR=?

Query the ranges of parameters related to the
phonebook entries.

+CPBR: (1-250),24,14
OK
AT+CPBW="5","13903702
805",,"test"

Write a phonebook record.

OK
AT+CPBW=1

Delete the entry in index 1 in the phonebook.

There are two methods to edit phonebook entries using the AT+CPBW command:


Write an entry to a specified location. This method edits the location where a
phonebook entry exists or writes a new entry to a vacant location.



Write a new phonebook entry to the next location of a location that already has a
phonebook entry. This method does not require a specified storage location. The

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Phonebook Application Scenarios

AT+CPBW command can be used to edit phonebook entries of the "SM" or "ON"
type.
Figure 6-3 Writing phonebook entries
Writing phonebook entries

Start

Query the ranges of
parameters related
to the phonebook
entries.

AT+CPBR=?
Parameter ranges
+CPBR: (1-250),20,16

Read all phonebook entries.

+CPBR: 1,"+491765864491",145,"John Smith"
+CPBR: 3,"+441236548545",145,"Emily Miller"
Read all the returned results.
Write phonebook
parameters.

Write a phonebook entry
to a specified location.
Note: If an entry already
exists in the location,
the entry will be overwritten.

Write a phonebook
entry to a vacant location.

AT+CPBW=,"+44546465
4568",145,"Paul Williams"

+CEM ERROR:
memory full

AT+CPBW=1,"+44546465
4568",145,"Paul Williams"

+CEM ERROR:
invalid index

End

6.4.2 Troubleshooting
Scenario

Error information is
returned in response to
one of the previous
commands.

Issue 04 (2014-12-08)

Possible Error
Information

Solution

+CME ERROR: SIM
busy

Phonebook initialization has
not completed. Try again
later.

+CME ERROR: SIM
PIN required

Enter the correct PIN.

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Possible Error
Information

Solution

+CME ERROR: SIM
PUK required

Enter the correct PUK.

Error information is
returned when writing an
entry into the
phonebook.

+CME ERROR: dial
string too long

Check that the phone
number is not too long.

Error information is
returned in response to
one of the previous
commands.

+CME ERROR:
invalid index

Check that the location index
and phone number type are
valid.

Error information is
returned when writing an
entry into the
phonebook.

+CME ERROR:
invalid characters in
dial string

The phone number to be
written into the phonebook
contains invalid characters.
Delete the invalid characters
and try again.

AT+CPBW=,"123456789
01234567890123",128,"
80534E4E3A"

+CME ERROR:
memory full

The storage is full. Delete
some entries and try again.

Scenario

6.5 Searching for Phonebook Entries
6.5.1 Reference Process
Command

Description

AT+CPBF=

Search the current storage for
phonebook entries that contain
the field.

+CBPF: ,,,
+CBPF: ,,,
...
OK
Return the maximum phone
number length and maximum
name length supported by the
current phonebook storage.

AT+CPBF=?

+CPBF: ,
OK

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6.5.2 Troubleshooting
Scenario

Error information is returned
in response to one of the
previous commands.

AT+CPBF=

Possible Error
Information

Solution

+CME ERROR: SIM
busy

Phonebook initialization has
not completed. Try again
later.

+CME ERROR: SIM
PIN required

Enter the correct PIN.

+CME ERROR: SIM
PUK required

Enter the correct PUK.

+CME ERROR: not
found

No matches were found.
Check whether the current
phonebook storage has
entries that match the search
criterion.

6.6 Querying User Number
6.6.1 Reference Process
Command

Description

AT+CNUM

Query the SIM number.

+CNUM: [],,
+CNUM: [],,
...
OK

6.6.2 Troubleshooting
Scenario

Error information is
returned in response to
one of the previous
commands.

Issue 04 (2014-12-08)

Possible Error
Information

Solution

+CME ERROR: SIM
busy

Phonebook initialization has
not completed. Try again
later.

+CME ERROR: SIM PIN
required

Enter the correct PIN.

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Scenario

Phonebook Application Scenarios

Possible Error
Information

Solution

+CME ERROR: SIM
PUK required

Enter the correct PUK.

6.7 Setting the TE's Character Sets
6.7.1 Reference Process
Command

Description

AT+CSCS=?

Query the character sets supported by the
UE.

+CSCS: ("IRA","GSM","UCS2")
OK
AT+CSCS?

Query the current character set.

+CSCS: "IRA"
OK
Read the first phonebook entry. The TE
character set is the International
Reference Alphabet (IRA). The content of
the first entry's name field is "HUAWEI".

AT+CPBR=1

+CPBR: 1,"0123456789",129,"HUAWEI"
OK
AT+CSCS="UCS2"

Set the TE's character set to UCS
alphabet.

OK
AT+CPBW=1,"0123456789",129,"00
4800550041005700450049"

The character set is the UCS alphabet.
The content of the phonebook entry's
name field is
004800550041005700450049, which is
"HUAWEI" in the IRA.

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Command

Description

AT+CPBR=1

Read the first phonebook entry. The TE
character set is UCS alphabet. The
content of the first entry's name field is
004800550041005700450049 ("HUAWEI"
in the IRA).

+CPBR: 1,"0123456789",129,"004800550041005700450049"
OK

6.7.2 Troubleshooting
None

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SIM Operation Application Scenarios

7.1 PIN Operations
7.1.1 Reference Process
Command

Description

AT+CLCK="SC",1,""

Enable PIN authentication. (
specifies the PIN. See note 1.)

OK
AT+CLCK="SC",2

Request the SIM card state.

+CLCK: 1

"+CLCK: 1" means that the SIM card is
not blocked.

OK
AT+CLCK="SC",0," "

Disable the SIM card lock. (
specifies the PIN. See note 1.)

OK
AT+CLCK="SC",2

Request the SIM card state.

+CLCK: 0

"+CLCK: 0" means that the SIM card is
not blocked.

OK
AT+CLCK="SC",1,""

Enable PIN authentication. (
specifies the PIN. See note 1.)

OK
AT+CPIN=""

Request the PIN after the module
restarts.

OK
AT+CPIN?

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Request the PIN state.

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SIM Operation Application Scenarios

Description

+CPIN: READY
OK
AT+CLCK="SC",2

Request the SIM card state.

+CLCK: 1

"+CLCK: 1" means that the SIM card is
not blocked.

OK
AT+CPWD="SC","","1234"

Change the PIN (1234 will be the new
PIN).

OK
AT+CPWD="SC","1113","1233"

Enter an incorrect PIN (first attempt).

+CME ERROR: incorrect password
AT+CPWD="SC","3333","1233"

Enter an incorrect PIN (second attempt).

+CME ERROR: incorrect password
AT+CPWD="SC","4711","1233"

Enter an incorrect PIN (third attempt).

+CME ERROR: SIM PUK required
Check whether the password is
requested.

AT+CPIN?
+CPIN: SIM PUK
OK
AT+CPIN="12345678","0000"

Enter the SIM PUK and specify the new
SIM PIN (activate new "SC" lock).

NOTE

Issue 04 (2014-12-08)



After PIN authentication is enabled using AT+CLCK, the module must be restarted for the
change to take effect.



Either AT^CPIN or AT+CPIN can be used to authenticate the PIN.

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7.1.2 Troubleshooting
Scenario

Enable PIN authentication.
AT+CLCK="SC",1,""

Possible Error
Information

Solution

+CME ERROR:
operation not
allowed

If PIN authentication has
been enabled, it cannot be
enabled again. Check
whether PIN authentication
has been enabled.

+CME ERROR:
incorrect
password

Enter the correct PIN. The
original PIN is provided by
the operator.

+CME ERROR:
SIM PUK required

Incorrect PINs have been
entered three times and the
SIM card is blocked. Run
AT+CPIN="","
" to enter the PUK to unblock
the SIM card. The PUK is
provided by the operator and
cannot be changed by users.
If incorrect PUKs are entered
10 times, the SIM card will be
permanently blocked.

+CME ERROR:
incorrect
password

must be the
current PIN. Like the PIN
authentication, if incorrect
PINs are entered three times,
the PUK will be required. If
incorrect PUKs are entered
10 times, the SIM card will be
permanently blocked.

Enter the PIN.
AT+CPIN=""

Changes the PIN.
AT+CPWD="SC","",""

7.2 CRSM Command
7.2.1 Reference Process
Command

Description

AT+CRSM=176,12258,0,0,10

Read the file EFiccid with a transparent
structure. (12258 is 0X2FE2, the
EFiccid file's FID).

+CRSM: 144,0,""

After the command is processed
successfully, the EFiccid file's content
() is returned.

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Command

Description

AT+CRSM=178,28476,1,4,176,,"7F10"

Use an absolute path to read the first
entry from the EFsms file on the SIM
card's DFtelecom folder.

+CRSM: 144,0,""

is the content of the first entry.
The length of is 176 bytes.

OK
AT+CRSM=192,12258

Get response of EFiccid.

+CRSM: 144,0,""

is the response data of
EFiccid. For details about ,
refer to the ETSI TS 102.221 protocol.

OK
AT+CRSM=214,28421,0,0,2,"0012"

Update the content of the transparent
structure EFli file on the SIM card.

+CRSM: 144,0,""

Update succeeded.

OK
AT+CRSM=220,28476,1,4,176,"1111",
"7F10"

Update the content of the linear fixed
structure EFsms file on the SIM card.

+CRSM: 144,0,""

Update succeeded.

OK
AT+CRSM=242

Obtain the current directory information.

+CRSM: 108,"",""

indicates ’s length in
byte.

indicates the current directory
status by hexadecimal.

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NOTE


To read or update a file, appropriate commands must be used according to the file's
structure type (for details, refer to the description of file properties in the 3GPP TS 31.102
protocol). For transparent structure files, use 176 (Read Binary) and 214 (Update Binary).
For linear fixed structure files, use 178 (Read Record) and 220 (Update Record).



If is not contained in the command, the module will prefer to access the files with
the same FID in the current directory.



Files can be accessed only when the access criteria are met. Otherwise the SIM card will
return PSWs indicating that the access authentication failed. If an EF file's read privilege is
PIN protected and the module does not have the PIN authenticated, PSWs indicating that
the access authentication failed will be returned after the AT+CRSM command is used to
read the EF file.



To use the AT+CRSM command to access the file content on the SIM card, the parameters
contained in the command must strictly meet the requirements in the ETSI TS 102.221 and
3GPP TS 31.102. For detailed requirements, refer to the ETSI TS 102.221 and 3GPP TS
31.102.

7.2.2 Troubleshooting
Scenario

Possible Error
Information

Update the content of the
linear fixed structure EFsms
file on the SIM card.

+CRSM: 105,129,""

AT+CRSM=178,12258,0,0,
10

Update the content of the
linear fixed structure EFsms
file on the SIM card.

+CRSM: 105,130,""

AT+CRSM=220,28476,1,4,
176,"1111","7F10"

Issue 04 (2014-12-08)

Solution
The status word (SW)
indicates a Read command
error occurred. Files with a
transparent structure should be
read using 176 (READ
BINARY).
The PSW indicates that the
security conditions were not
met. To update the EFsms
file, the correct PIN is
required.

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Sleeping and Waking Up Application Scenarios

Sleeping and Waking Up Application
Scenarios

As an embedded component in the host, the module also consumes power, which
increases the power consumption of the integrated product. Therefore, the most
important task of power management is to reduce the power consumption of the
integrated product by enabling the module's sleep mode when necessary.
The host and the module need to wake each other up from sleep if communication is
required. Therefore, another task of power management is to provide a wake-up
control mechanism for the host and module.
Power management involves three parts: the host system software (including the
USB driver/UART driver/GPIO driver/sleep mechanism functions), connection
hardware between the host and module, and the module's software wake-up
mechanism.
This chapter is mainly concerned with the module's software wakeup mechanism,
including the wake-up principle, how USB related events impact on the waking up of
the module and remotely waking up the module, and how the module remotely wakes
up the host.
This chapter briefly describes the power management related connection hardware
between the host and module.
This chapter does not describe the host system software. For example, if the host
runs on a Windows or Mac system, Huawei will provide a USB driver program
corresponding to the module. If the host runs on an Android system, Huawei will
provide Guide to Kernel Driver Integration in Linux for Huawei Modules for users to
configure the USB-based wakeup function of the module. If the host runs on a Linux
system, power management is supported only when the Linux Kernel version is
2.6.35 or later.
This document describes typical module application scenarios. A host can be
designed based on the actual system features and the application scenarios of the
module to reduce power consumption of both the module and integrated product.
After the host is designed as recommended by this document, the module's power
consumption and the whole unit's power consumption can meet the performance
requirements. For details, see related description in the product manual.

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NOTE

To set the host to be in the standby state, check the module’s GPS service state first. If the
GPS service is enabled, the host should send AT^WPEND to disable the GPS service.
Otherwise, the module cannot enter sleep mode.

8.1 Hardware Interfaces
The module communicates with the host using mainly USB or UART. For details
about pins related to power management, see Table 8-1 .
For corresponding interface numbers and reference design for the pins, see HUAWEI
ME909u-523 LTE LGA Module Hardware Guide or HUAWEI ME909u-523 LTE Mini
PCIe Module Hardware Guide.
Table 8-1 Power management related pins
Interface

PCIE

LGA

Pin name

WAKE#

WAKEUP_OUT

Direction

Functional Description

Diagram

Output

When a wake-up source arrives, this
pin output a low-level-voltage pulse
lasting for 1s during which if other
wake-up sources arrive, the module
will ignore the later wake-up requests.
In other words, the module will not
output a second pulse during this 1s.

Figure 8-1

Output

When a wake-up source arrives, this
pin output a high-level-voltage pulse
lasting for 1s during which if other
wake-up sources arrive, the module
will ignore the later wake-up requests.
In other words, the module will not
output a second pulse during this 1s.

Figure 8-2

When the pin carries a high-level
voltage, the states of the module are
as follows:
The module will be prohibited to enter
sleep mode if the module is awake.
LGA

WAKEUP_IN

Input

The module will be woken up if the
module is in sleep mode.

Figure 8-3

When the pin carries a low-level
voltage, the module is allowed to enter
sleep mode. (By default, the pin is set
to INPUT/PD, which is, the software
detects a low-level voltage on the pin
when the pin is not connected.)

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Interface

Pin name

Direction

Sleeping and Waking Up Application Scenarios

Functional Description

Diagram

Indicate the state of the module.
LGA

SLEEP_STATUS

Output

When the pin carries a high-level
voltage, the module is in working
mode. When the pin carries a lowlevel voltage, the module is in sleep
mode.

Figure 8-4

NOTE

The PCIE interface does not support UART.

8.2 Sequence Diagram
Figure 8-1 WAKE# PIN output sequence

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Figure 8-2 WAKEUP_OUT PIN output sequence

Figure 8-3 WAKEUP_IN PIN input sequence

About the vote, see section 8.3.1 .

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Figure 8-4 SLEEP_STATUS PIN output sequence

8.3 Software Interfaces
8.3.1 Principle
The module runs on a multi-task software system. The sleep task is granted with the
lowest priority and assigned to detect whether the module can enter sleep mode.
Other tasks (such as the RF, SIM card, USB) have voting rights. They vote to decide
whether the module can enter sleep mode. When no other tasks are running, the
sleep task is executed. If the sleep task detects that all other tasks agree on the
module's sleep, the module enters sleep mode, as shown in Figure 8-5 . At this time,
the baseband chip reduces the work frequency, and the RF enters the Discontinuous
Reception (DRX) mode.
Figure 8-5 Currency state when the module is in sleep mode

T 2(SLEE P )

T 1(W akeup)

For more information about the module's sleep procedure, see Figure 8-6 .

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NOTE

The module's sleep mode is different from working mode or flight mode set using the
AT+CFUN command. The RF will be turned off when the module enters LPM mode using the
command AT+CFUN=0 while the RF will enter DRX mode without being turned off when the
module is in sleep mode. For more details, refer to HUAWEI ME909u-523 LTE LGA Module AT
Command Interface Specification.

The module enters sleep mode automatically when the sleep task detects that all
other tasks agree on the module's sleep. The sleep period of the module depends on
the current working state and circumstance. The period may last for several seconds,
or up to several minutes.
Figure 8-6 Sleep procedure

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8.3.2 USB and Sleep
USB is an important communication channel between the module and the host.
According to the USB protocol, normally a hub or a root hub periodically sends Start
of Frame (SOF) data packages (one data package per ms using full-speed USB and
one package per 125 µs using high-speed USB). Through this mechanism, USB
always votes to stop the module from entering sleep mode.
When the USB driver provided by Huawei detects that the module and the host have
not exchanged data in 5 seconds, the USB driver will enable the port's suspend
feature, stopping SOF data packages being sent and suspending the USB controller.
This enables the USB to vote to agree the module's sleep.
NOTE


If the USB driver used is developed by users or is integrated with external application,
ensure that the USB driver supports the USB suspend features (including selective
suspend and global suspend, as defined in the USB standard.)



Before the D+/D– connection between the host and the module disconnects, the
AT^WAKEUPCFG=1,1,x command (x is determined by the customers based on the
HUAWEI ME909u-523 LTE LGA Module AT Command Interface Specification) must be
sent to disable the USB remote wake-up function. Otherwise, after the module is woken up,
it cannot enter sleep mode again because it keeps waking up the host over the USB.



After the D+/D– connection between the host and the module resumes, the
AT^WAKEUPCFG =1,3,x command (x is determined by the customers based on the
HUAWEI ME909u-523 LTE LGA Module AT Command Interface Specification) must be
sent to enable the USB remote wake-up function. Otherwise, the module cannot wake up
the host over the USB.

8.3.3 UART and Sleep
UART is an important communication channel between the module and the host. If
the host uses UART (a TTL level Interface), it can connect to the module's UART
directly. If the host uses RS232, it can connect to the module's UART through a
conversion chip such as MAX232.
NOTE

If the module is in sleep state, the host send data to module only by UART that can’t wakeup
the module. It must be used with WAKEUP_IN pin.

8.3.4 Module Wake-up
RF periodically wakes up the module based on the DRX cycle (depending on the
actual configuration of the network system), as shown in Figure 8-5 .
Other aperiodic events include:
1.

The host sends data using USB or pulls WAKEUP_IN up.

Changes on the network, for example, an incoming call, an incoming text
message, a signal change, a network working mode change, a network search,
an IP data package (when a dial-up network connection is set up).

Software system events such as a timer

Abnormal events, for example, an antenna drops or a SIM card becomes loose.

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8.3.5 Host Woken up by Module
Wake-up Source
A wake-up source is a module event that can wake up the host, for example, an
incoming voice call, a text message, data (PPP data, TCP/UDP data from the
network), and unsolicited messages.

Remotely Waking up the Host Using USB
When the host is in sleep mode and the USB controller is in suspended mode, if the
module needs to send data to the host (for example, a wake-up source has arrived),
the module sends a remote wake-up signal that lasts 3 ms to inform the host to start
USB resume (as shown in Figure 8-7 ). To complete the procedure, the following
conditions must be met:
1.

The USB controller on the host supports USB remote wake-up and can wake up
the host.

The USB driver enables or disables remote wake-up by executing
SET_FEATURE and CLEAR_FEATURE commands. Therefore, remote wake-up
must be enabled on the USB driver before USB enters suspended mode.

When the host receives the remote wake-up signal from the module, the host
needs to send a full speed K signal that lasts at least 20 ms. When the USB
controller resumes, the host must send the SOF token within 3 ms from the
startup of the idle state. Otherwise, the module enters suspended mode again,
as shown in Figure 8-7 .

HS Hub

Figure 8-7 USB resume time sequence
Signaling
Start of
Resume
Signaling

Signaling
>20ms

<3.0ms

D+
FS idle

FSK

HS idle

uSOF

HS Device

D-

Issue 04 (2014-12-08)

if remote
Start of
wake up
Resume
Signaling 3ms

<1.33us

Device
Resumed

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Sleeping and Waking Up Application Scenarios

Figure 8-8 Successful procedure of remote wake-up

WAKEUP_OUT Waking up the Host
The module will output a 1s pulse using WAKE# as shown in Figure 8-1 or
WAKEUP_OUT as shown in Figure 8-2 when a wake-up source arrives. The host
wakes itself up after detecting the level change.

Remote Wake-up Configuration
The power consumption of the host increases if it is frequently woken up. The host
can configure the module's wake-up sources using ^WAKEUPCFG and ^CURC
command so as to reduce the power consumption.
The ^WAKEUPCFG command can be used to choose wake-up sources and the
wake-up channel (USB or WAKEUP_OUT). The ^CURC command can choose
unsolicited messages. For more details, refer to AT Command Interface Specification.

8.4 Application Scenarios: System with USB Connection
only
A host runs on Android, with support for USB suspend, USB remote resume, voice
calling, and text messages.

8.4.1 Hardware Connection
The host connects to the module using USB.

8.4.2 Software Procedure
Command

Description

AT^WAKEUPCFG=?

Query the parameter range of
WAKEUPCFG.

^WAKEUPCFG: (0-1),(0-3),(0-15)
OK

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Command

Description

AT^WAKEUPCFG=1,2,15

Configure the module to make sure
that incoming calls, text messages,
data, and unsolicited messages can
remotely wake up the host using
USB.

OK
Query the parameter range of
CURC.

AT^CURC=?
^CURC: (0-1)
OK

8.4.3 Advantages
With software configuration, while the system requirements (calling and text
messages) are met, the number of times the host is woken up by unsolicited
messages, and consequently the power consumption, are reduced.

8.5 Application Scenarios: System with USB and
WAKEUP_OUT
A host running Android, with support for text messages, but has not USB remote
resume or voice calling.

8.5.1 Hardware Connection
The host must connect to the module using USB and WAKEUP_OUT pins

8.5.2 Software Procedure
Command

Description

AT^WAKEUPCFG=?

Query the parameter range of
WAKEUPCFG.

^WAKEUPCFG: (0-1),(0-3),(0-15)
OK
AT^WAKEUPCFG=1,1,14

Issue 04 (2014-12-08)

Configure the module to make sure
that text messages, data, and
unsolicited messages can remotely
wake up the host using the
WAKEUP_OUT pin.

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OK
AT^CURC=?

Query the parameter range of CURC.

^CURC: (0-1)
OK

8.5.3 Advantages
A solution is provided for systems not supporting USB remote resume.
With software configuration, while the system requirements (calling and text
messages) are met, the number of times the host is woken up by unsolicited
messages, and consequently the power consumption, are reduced.

8.6 System with Other Connection Methods
If the host can be connected to the module only using UART, you can refer to the
HUAWEI ME909u-523 LTE LGA Module Hardware Guide or HUAWEI ME909u-523
LTE Mini PCIe Module Hardware Guide. If the host can connect to the module using
USB/UART/WAKEUP_OUT and can support USB remote wake-up and UART remote
wake-up, prioritize USB remote wake-up over WAKEUP_OUT remote wake-up. For
details about the software procedure, refer to the earlier sections while considering
the host system feature.

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Thermal Protection Application Scenarios

9.1 Pre-configuration
Command

Description

^THERM: 1

When the temperature is higher than the temperature
protection threshold, the module enables thermal
protection: The module turns off its RF and reports to
the host.

^THERM: 0

When the temperature is lower than the temperature
protection hysteresis threshold, the module disables
thermal protection: turns on its RF and reports to the
host.

9.1.1 Troubleshooting
None

9.2 Thermal Protection Process


When the module's temperature is lower than 101°C, the module works normally.



When the module's temperature is higher than 101°C, the module enables
thermal protection: turns off its RF transmission and presents the ^THERM: 1
indication. When the module's temperature is higher than 107°C, the module will
turn off after 15 seconds. When the module's temperature is lower than 93°C,
the module disables thermal protection: turns on its RF transmission, and
presents the ^THERM: 0 indication.

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NOTE

Issue 04 (2014-12-08)



During an emergency call, if thermal protection is enabled, the module will present an
indication but will not take thermal protection actions such as turning off its RF or shutting
down.



After thermal protection is enabled, users cannot make emergency calls.



Thermal protection is designed to protect the module from being damaged by over
temperature. To work in high temperature environments, both the module and its peripheral
components must be able to resist the same temperature.

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Module Powering Off and Resetting Application
Scenarios

Module Powering Off and Resetting
Application Scenarios

10.1 Restarting the ME
10.1.1 Reference Process
Command

Description

AT+CFUN=1,1

Restart the module.

The ME can be reset or restarted using the AT+CFUN command. After the restart,
the module must register with the network and authenticate its SIM card’s PIN.

10.1.2 Troubleshooting
None

10.2 Powering Off ME
10.2.1 Reference Process
Command

Description

AT^MSO

Power off the module.

After the command is received, the module will power-off.

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10.2.2 Troubleshooting
None

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GPS Application Scenarios

11.1 Introduction to GPS
11.1.1 GPS Positioning Methods
Table 11-1 GPS positioning methods
Positioning
methods

Description

Benefits

Drawbacks

Standalone

This is a traditional GPS
positioning method. Using
this method, a module
receives satellite signals
directly and makes
calculations to obtain
positioning results.

No communication with the
network is invoked, incurring
no data traffic between the
module and the network.

Long time to first
fix (TTFF) in code
mode.

Mobile Station
Based (MSB)
positioning
using the User
Plane Protocol

Requests the assistant
data from the network to
assist and accelerate the
positioning. This method is
one of the Assisted GPS
(A-GPS) methods.



Significantly reduces the
TTFF after cold start and
increases the rate of
successful positioning.



Enables positioning in
environments with very poor
satellite signals.

Requires the
assistant data from
the network,
incurring network
traffic.

Mobile Station
Assisted (MSA)
using the User
Plane Protocol

Requests data from the
network to assist and
accelerate the positioning.
After receiving satellite
data, the module sends the
satellite data to the
network for calculations,
and the network returns
the calculation results to
the module. This method is
one of the A-GPS
methods.



Reduces the TTFF after cold
start and increases the rate
of successful positioning.



Hands most workload to the
network, reducing the
module's workload.



Enables positioning in
environments with poor
satellite signals (network
dependent).

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Requires complex
interaction with the
network, incurring
network traffic.

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Positioning
methods

Description

XTRA
positioning

Downloads XTRA data
from the Qualcomm's
XTRA server to assist
positioning. The XTRA
data is valid for 7 days.

GPS Application Scenarios

Benefits


Reduces the TTFF after cold
start.



Long valid period for the
XTRA data, eliminating
frequent data downloading.

Cell ID

Base station mode, this
approach will be based
on the cell ID number of
the mobile terminal is
located to determine the
location of the user.

This mode can be use when
other optioning methods are
failed.

Global
navigation
satellite system
(abbreviated as
GNSS)

Uses both the GPS and
GLONASS for positioning.

Using more satellites,
increases the successful
positioning rate and the
positioning accuracy.

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Drawbacks


Cannot reduce
the TTFF after
cold start as
significantly as
the A-GPS
methods.



The XTRA data's
ability to assist
positioning
declines as time
goes by.

Very low accuracy.

HUAWEI ME909u-523 LTE LGA Module
Application Guide

GPS Application Scenarios

11.1.2 GPS Ports
Figure 11-1 GPS Interface detected after the module is connected to a computer

GPS Interface port is used to send GPS-related AT commands and unsolicited
indications for NMEA positioning data.
Figure 11-2 Data sent through the GPS interface ports

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GPS Application Scenarios

11.2 Standalone Positioning
Command

Description

AT^WPDOM=0

Set the positioning method to
Standalone.

OK
Set the session type to single
positioning.

AT^WPDST=0
OK

Set the session type to tracking and
positioning.

AT^WPDST=1
OK
AT^WPDFR=65535,1

Set the number of positioning times
and the interval between each
positioning for the tracking and
positioning. If the session is a single
positioning, you do not need to set
these parameters.

OK
AT^WPQOS=255,500

Set the positioning service quality. The
first parameter indicates the response
time, and the second indicates the
horizontal accuracy threshold.

OK
AT^WPDGP

Start positioning.

OK
^POSEND: -1,9

The first value indicates positioning
end reason, and the second indicates
the left positioning times.

NOTE

Issue 04 (2014-12-08)



The Standalone method can be used when the module has no SIM card inserted.



If there is an ongoing positioning session, the session must be terminated before setting
the positioning parameters so that the parameters can take effect for the positioning to be
started. This rule applies to all positioning methods.



Execute AT^WPEND command can terminate the current positioning session.

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GPS Application Scenarios

11.3 MSB Positioning Using the User Plane Protocol
Command

Description

AT^WPDOM=5

Set the positioning method to MSB.

OK
Set the session type to tracking and
positioning.

AT^WPDST=1
OK
AT^WPDFR=65535,1

Set the number of positioning times
and the interval between each
positioning for the tracking and
positioning.

OK
AT^WPQOS=255,500

Set the positioning service quality.
The first parameter indicates the
response time, and the second
indicates the horizontal accuracy
threshold..

OK
AT^WPURL=SUPL.GOOGLE.COM:7276

Set the A-GPS server address and
port number. This address is just
Google AGPS server. Some of the
AGPS server requires certificate
authentication.

OK
AT+CGDCONT=15,"IP","CMNET"

Set the PDP context required by AGPS dial-up. By default, A-GPS dialup uses the fifteenth PDP context.
"CMNET" is the APN of network that
module have registered.

OK
AT^WPDGP

Start positioning.

OK
^POSEND: -1,9

Issue 04 (2014-12-08)

The first value indicates positioning
end reason, and the second indicates
the left positioning times.

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GPS Application Scenarios

NOTE


The MSB method requires the module to register with a network, and will incur data traffic
during positioning. When the MSB positioning fails, the module will automatically switch to
the Standalone positioning if NV3756=1, but will not switch to the Standalone positioning if
NV3756=0.



During the AGPS positioning process, please do not search the network, because this
operation will influence the positioning time.

11.4 MSA Positioning Using the User Plane Protocol
Command

Description

AT^WPDOM=1

Set the positioning method to MSA.

OK
Set the session type to tracking and
positioning.

AT^WPDST=1
OK
AT^WPDFR=65535,1

Set the number of positioning times
and the interval between each
positioning for the tracking and
positioning.

OK
AT^WPQOS=255,500

Set the positioning service quality.
The first parameter indicates the
response time, and the second
indicates the horizontal accuracy
threshold.

OK
AT^WPURL=SUPL.GOOGLE.COM:7276

Set the A-GPS server address and
port number. This address is just
Google AGPS server. Some of the
AGPS server requires certificate
authentication.

OK
AT+CGDCONT=15,"IP","CMNET"

Set the PDP context required by AGPS dial-up. By default, A-GPS dialup uses the fifteenth PDP context.
"CMNET" is the APN of network that
module have registered.

OK
AT^WPDGP

Start positioning.

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GPS Application Scenarios

NOTE


The MSA method requires the module to register with a network, and incurs data traffic
during positioning. If GPS response time in the positioning QoS is set to a too small value,
the MSA positioning may fail.



During the AGPS positioning process, please do not search the network, because this
operation will influence the positioning time.

11.5 XTRA Positioning
Command

Description

AT^WPDOM=6

Set the positioning method to gpsOneXTRA.

OK
AT^XTRASTA

Query the status of XTRA data. If the date of the
obtained XTRA data is more than seven days
earlier than the current date, the XTRA data is
invalid, and the module needs to download new
XTRA data. (The XTRA data's ability to assist
positioning declines as time goes by. Therefore, it
would be appropriate to set the XTRA data's valid
period to three days. You can also download the
latest XTRA data without querying the existing
XTRA data information.)

Notify XTRA data query result.

^XDSTATUS: 0,0,0,0
AT^XTRATIME……

Upper layer applications use this command to
access the SNTP server to obtain the current time
information, and inject the information into the
module.

OK
^TIMESETRULT: 0

Notify XTRA time injected result.

AT^XTRADATA……

Upper layer applications use this command to
access the XTRA server to download XTRA data,
packetize the data, and inject the data into the
module. (You can also inject the XTRA data from
the host into the module.)
There are two types of XTRA files stored on the
XTRA server:

Issue 04 (2014-12-08)



Xtra.bin file: contains predicted two-line orbital
elements for GPS satellites, about 45 KB.



Xtra2.bin file: contains predicted two-line orbital
elements for GPS and GLONASS satellites,
about 80 KB.

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Command

GPS Application Scenarios

Description

OK
^DATASETRULT: 50

Notify XTRA data injected result.

AT^WPDST=1

Set the session type to tracking and positioning.

OK
AT^WPDFR=65535,1

Set the number of positioning times and the
interval between each positioning for the tracking
and positioning.

OK
AT^WPQOS=255,500

Set the positioning service quality. The first
parameter indicates the response time, and the
second indicates the horizontal accuracy
threshold.

OK
AT^WPDGP

Start positioning.

OK
^POSEND: -1,9

The first value indicates positioning end reason,
and the second indicates the left positioning times.

NOTE

XTRA date must be injected before XTRA data is injected.

11.6 GNSS Positioning
The GNSS positioning uses both the GPS and GLONASS satellites for positioning.
Command

Description

AT^WGNSS=1

Set GNSS as the positioning system to use both
the GPS and GLONASS satellites for positioning.
To switch from one positioning system to another,
the module must restart. To switch the module to
use GPS satellites only, run AT^WGNSS=0 and
restart the module.

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GPS Application Scenarios

Command

Description

AT^WPDOM=a value within
the value range

For the MSA and MSB positioning methods, the
data obtained from the server is two-line orbital
elements of GPS satellites, which will not help the
GLONASS positioning, but the module will still
search for GLONASS satellites.

OK
AT^WPDST=1

Set the session type to tracking and positioning.

OK
AT^WPDFR=65535,1

Set the number of positioning times and the
interval between each positioning for the tracking
and positioning.

OK
AT^WPQOS=255,500

Set the positioning service quality. The first
parameter indicates the response time, and the
second indicates the horizontal accuracy
threshold.

OK
AT^WPDGP

Start positioning.

OK
^POSEND: -1,9

The first value indicates positioning end reason,
and the second indicates the left positioning times.

NOTE

After AT^WGNSS is executed, the module must be restarted to allow the settings configured
by AT^WGNSS to take effect.

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HUAWEI ME909u-523 LTE LGA Module
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Local Upgrade Application Scenarios

12.1 Starting the Local Upgrade
12.1.1 Full Upgrade Flow
Figure 12-1 Full upgrade flow

Full upgrade
AP

Module

AT^FWLOAD=0

Module
Reset
‘>’and‘C’

Through the 1K-Xmodem protocol to send update
file

send update file
complete
Module
Reset
^FWLSTATE report upgrade state

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Local Upgrade Application Scenarios

12.1.2 Launch the Local Upgrade
Figure 12-2 Launch the upgrade flow

Module

Host Application

AT^FWLOAD=0

ACK characters
'>'a nd 'C'

Module Reset

The local upgrade can be used on PCUI port. After the host application sends the
"AT^FWLOAD" command, the module will be reset to start the upgrade flow. And
then the ACK characters '>' and 'C' will be returned to inform that the host application
can receive firmware data. The character '>' is only reported once, and the duration
between two 'C' characters will be about 10 seconds. And there are maximum ten 'C'
characters will be reported before the module finally return failed upgrade state.

12.1.3 Transfer the Upgrade File
Figure 12-3 Transfer the upgrade file

Host Application

Module
Use the 1K-Xmodem
protocol to transfer the
upgrade file
File transfer is
completed, and
firmware starts to
upgrade
Module Reset

After the upgrade file is transferred to the module, the module will start to upgrade
the firmware directly. Finally, the module will be automatically reset to finish the
upgrade flow. The host application should re-open the module's port and wait for the
upgrade state AT command "AT^FWLSTATE".

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Local Upgrade Application Scenarios

12.1.4 Test
Tools and Test Steps
This section takes the full upgrade flow for example; the test is taken on Windows 7
or XP system with Hyper Terminal tool.
NOTE

The Hyper Terminal tool supports 1k-Xmodem protocol to transfer files.

Step 1 Open the Hyper Terminal tool and choose the PCUI port number. (In this document,
the PCUI port is COM25.)

Step 2 Set the parameters of the COM25 port.

Issue 04 (2014-12-08)

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Local Upgrade Application Scenarios

Step 3 Run the AT^FWLOAD=0 command, and launch a full upgrade.

Step 4 Choose the file which will be sent to the module and choose the 1K Xmodem
protocol.

Issue 04 (2014-12-08)

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Local Upgrade Application Scenarios

Step 5 Begin to transfer the local file to the module flash.

Step 6 After finishing the file transmission, start the upgrade. And the module will reset
automatically to finish the upgrade.


If the upgrade is successful, the module will return ^FWLSTATE: 90.



If the upgrade comes across some error, the ^FWLSTATE will give an error
code.

Issue 04 (2014-12-08)

HUAWEI ME909u-523 LTE LGA Module
Application Guide

Local Upgrade Application Scenarios

Requirement of the AP
The AP is required to have 4 KB RAM at least (used to store the cache data). If AP
needs to support the full upgrade, AP FLASH memory must be larger than 80 MB
(the full size of ME909u-523 firmware upgrade files is 80 MB).
1.

AP should be able to access and load the upgrade files.

AP should have a file transmission tool, this tool need to support 1K-Xmodem
protocol.

Finding the PCUI port on Android and Linux System
Step 1 Enter /sys/bus/usb/drivers/option, and look out the following types of folders.

Step 2 Enter these folders, and view the bInterfaceProtocol value.

If the bInterfaceProtocol value is 12, the port is PCUI.

12.1.5 Reference Process
Command

Description

AT^FWLOAD=0

Start the full upgrade.

>
C

Issue 04 (2014-12-08)

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Local Upgrade Application Scenarios

NOTE


After the module reports 'C', the host transmits the upgrade package to the module using
the 1K-Xmodem protocol.



Full upgrade only supports on USB PCUI port.

12.1.6 Troubleshooting
If using the full upgrade on some hosts, after the module is restarted, the PCUI port
number may be changed. So you need to find the corresponding port, and then send
the local upgrade package.

12.2 Reporting the Local Upgrade State
12.2.1 Reference Process
Command

Description

AT^FWLOAD=0
>
C
The board restarts, and the
upgrade starts.
^FWLSTATE: 90

Report that the local upgrade succeeds.

NOTE

After the data have been transmitted completely and successfully, the MT will not send OK to
the TE.

12.2.2 Troubleshooting
None

Issue 04 (2014-12-08)

HUAWEI ME909u-523 LTE LGA Module
Application Guide

LED Indication Application Scenarios

13.1 Overview
Light Emitting Diode (LED) indicates the MT's current state. Table 13-1 shows the
HUAWEI default LED program, including LED mode to different states.
Table 13-1 HUAWEI default LED program
LED Mode

Service State

Permanently off

Off line

100 ms on/100ms off/100 ms on/1700ms off

Power on Initialization

100 ms on/100ms off/100 ms on/1700ms off

Connect to no service area

100 ms on/1900ms off

Permanently on

Connect on WCDMA

Permanently on

Transmit data on WCDMA

Permanently on

Connect on HSPA

Permanently on

Transmit on HSPA

100 ms on/1900ms off

Permanently on

Connect on LTE

Permanently on

Transmit data on LTE

NOTE

LED ON indicates LED GPIO High and LED OFF indicates LED GPIO Low.

Issue 04 (2014-12-08)

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LED Indication Application Scenarios

13.2 LED Setting Operations
13.2.1 Reference Process
Command

Description

AT^LEDCTRL=?

Check the parameter range supported by
the command.

^LEDCTRL: (0-2),00003FFF,(0-1),(1-100),(1-100),(1-100),(1-100)
OK
AT^LEDCTRL?

Query the current LED program, 1
indicates adapting HUAWEI default
program.

^LEDCTRL: 1
OK
AT^LEDCTRL=0

Turn off LED function.

OK
AT^LEDCTRL=1

Configure HUAWEI default program.

OK
AT^LEDCTRL=2,00000001,0

Configure that offline state LED mode is
Permanently off.

OK
AT^LEDCTRL=2,00000001,1,10,10

Configure that offline state LED mode is
single flash and cycle time is 2s (1s on/1s
off).

OK
AT^LEDCTRL=2,00000001,1,1,1,1,17

Configure that offline state LED mode is
double flash and cycle time is 2s (0.1s
on/0.1s off/0.1s on/1.7s off).

OK
AT^LEDCTRL=2,0000000F,1,1,1,1,17

Configure that offline, power on
initialization, register fail no service and
connect to no service state LED mode
are double flash. Cycle time is 2s (0.1s
on/0.1s off/0.1s on/1.7s off).

OK
AT^LEDCTRL=2,00007000,1

Issue 04 (2014-12-08)

Configure that register successful on
LTE, connect and transmit state LED
mode are Permanently on.

HUAWEI ME909u-523 LTE LGA Module
Application Guide

Command

LED Indication Application Scenarios

Description

OK
AT^LEDCTRL=2,3FFFFFFF ,1

Configure that all service state LED
modes are Permanently on.

NOTE

After LED mode is configured, it will take effective immediately. We suggest to configure all the
LED modes corresponding to its service states. If one LED mode does not configure, the
corresponding service state will adapt LED mode to Permanently OFF.

13.2.2 Troubleshooting
None

Issue 04 (2014-12-08)

HUAWEI ME909u-523 LTE LGA Module
Application Guide

Serial Port Configuration Application Scenarios

Serial Port Configuration Application
Scenarios

14.1 Baud Rate Configuration
14.1.1 Reference Process
Command

Description

AT+IPR?

Query the baud rate currently used by a module.

+IPR: 115200
OK
AT+IPR=""

Set a module's baud rate. After a new baud rate is
specified, the module communicates using the new
baud rate.

NOTE


If a module's baud rate is too low, its communication speed will be slow.



At present, the ME909u-523 supports the following baud rates: 600, 1200, 2400, 4800,
9600, 19200, 38400, 57600, and 115200.



In future, the higher speed baud rate may be supported, such as 230400, 460800, 921600,
1000000, 1500000, 2500000, 3000000, 3500000 and 4000000

14.1.2 Troubleshooting
Possible Error
Information

Scenario
Specify a baud rate not
supported by a
module.

Issue 04 (2014-12-08)

AT+IPR=""
ERROR

Solution
Check that the specified
baud rate is within the range
of supported baud rates.

HUAWEI ME909u-523 LTE LGA Module
Application Guide

Serial Port Configuration Application Scenarios

14.2 Setting Hardware Flow Control
14.2.1 Reference Process
Command

Description

AT+IFC=0,0

Turn hardware flow control off. After hardware flow
control is turned off, communication between the UE and
the DTC is not restricted by flow control.

OK
Turn hardware flow control on. After hardware flow
control is turned on, communication between the UE and
the TE is restricted by flow control: Data transmission
stops when UE's or TE's buffer level exceeds 80% and
resumes when the buffer level is below 20%.

AT+IFC=2,2

14.2.2 Troubleshooting
None

Issue 04 (2014-12-08)

HUAWEI ME909u-523 LTE LGA Module
Application Guide

FOTA Application Scenarios

15.1 FOTA Process
15.1.1 Upgrade Module Firmware Over Air Through Delta
Package
Figure 15-1 Upgrade module firmware over air through delta package

15.1.2 Procedure for FOTA Implementation
This section describes the workflow of HUAWEI Module FOTA feature.

Issue 04 (2014-12-08)

HUAWEI ME909u-523 LTE LGA Module
Application Guide

FOTA Application Scenarios

Figure 15-2 FOTA data flow
Step 1: Consolidate the modules
information which firmwares need to be
upgraded and provide it to Huawei
FAE.

Module model,
IMEI, original FW
version, target FW
version, country
and location

Step 2: After Huawei completes the
FOTA service provisioning, Huawei
FAE will inform customers that the FOTA
service is ready to launch.

Step 3: Customers inform their
application to start FOTA operation
through SMS or socket data command.

Step 4: HUAWEI FOTA server manager
provides the corresponding statics for
the FOTA service result.

NOTE

If the module is powered off during the firmware installing progress, after the module is
restarted, the firmware will resume installing at the last point.

AT command example (after customer application received SMS from HUAWEI FOTA
server or socket command to perform FOTA upgrade):
Command

Description

AT+GMR

Query the module's software version.

12.815.01.03.00
OK
AT^FOTACFG="1234","","",2[1]

Configure APN.

OK
AT^FOTAMODE=0,0,1,1

Set FOTA mode.

OK
AT^FOTASTATE?
^FOTASTATE: 10

Issue 04 (2014-12-08)

Indicate that the FOTA state is idle.

HUAWEI ME909u-523 LTE LGA Module
Application Guide

FOTA Application Scenarios

OK
Start to detect if new version exists in
Huawei FOTA server.

AT^FOTADET
OK
^FOTASTATE: 11
^FOTASTATE:
12,12.815.01.04.00,79114,"Support
send sms background"

Get the module's new version
"12.815.01.04.00".

AT^FOTADL=1

Start to download the new version and
upgrade.

OK
^FOTASTATE: 30

Indicate that it is downloading FW delta file.

AT^FOTADLQ

Query file download.

^FOTADLQ: 1,"IMAGE",1324,1324
^FOTADLQ: 2,"XNV",47104,77778
OK
^FOTASTATE: 40

Indicate that FW delta file is completely
downloaded.

^FOTASTATE: 50

Indicate that FW is ready to update.

^FOTASTATE: 90

After few minutes, FW is successfully
upgraded.

AT+GMR

Query the module's software version after
the upgrade.

12.815.01.04.00

The software version has been changed.

NOTE

[1] should be configured before any FOTA function is enabled. Here is an example and
the module needs to be configured according to the specific network.

Issue 04 (2014-12-08)

HUAWEI ME909u-523 LTE LGA Module
Application Guide

FOTA Application Scenarios

15.2 Setting FOTA Mode
15.2.1 Reference Process
Command

Description

AT^FOTAMODE=?

Check the parameter range supported by
the command.

^FOTAMODE: (0-1),(0-1),(0-1),(0-1),(1-65535)
OK
AT^FOTAMODE?

Query the current settings.

^FOTAMODE: 0,0,0,1,7

Return the current FOTA mode: manual
query, manual download, manual upgrade,
and resumable data transfer enabled

The value 7 indicates that the query cycle is
seven days, which is meaningless when
manual query is used.

AT^FOTAMODE=1,1,1,1,15

Configure FOTA mode as auto query, auto
download, auto upgrade, and resumable
data transfer enabled. And the auto query
cycle is set to 15 days.

NOTE


Parameter settings are all saved upon power-off.



All parameters will be restored to their default values after the upgrade.

15.2.2 Troubleshooting
Scenario

An error message is
returned.

Issue 04 (2014-12-08)

Possible Error
Information

Solution

+CME ERROR: Error
command parameters

The parameter is incorrectly
set. For details, see the latest
version of HUAWEI ME909u523 LTE LGA Module AT
Command Interface
Specification.

HUAWEI ME909u-523 LTE LGA Module
Application Guide

FOTA Application Scenarios

15.3 Setting FOTA Connection Parameters
15.3.1 Reference Process
Command

Description

AT^FOTACFG="cmnet","","",2

Set the APN to cmnet and authentication mode
to CHAP. Leaves the user name and password
blank. These parameters should be set
according to the contracted values.

OK
AT^FOTACFG?

Query the current settings.

^FOTACFG: "cmnet","","",2
OK

NOTE


Parameter settings are all saved upon power-off.



may be modified by other operations, so should be configured before any
FOTA function is enabled.



This command does not provide a test command. For details, see the latest version of
HUAWEI ME909u-523 LTE LGA Module AT Command Interface Specification.

15.3.2 Troubleshooting
Scenario

An error message is
returned.

Issue 04 (2014-12-08)

Possible Error
Information

Solution

+CME ERROR:
Operation not
supported

The operation is not
supported. For details,
see the latest version of
HUAWEI ME909u-523
LTE LGA Module AT
Command Interface
Specification.

+CME ERROR: Error
command parameters

The parameter is
incorrectly set. For
details, see the latest
version of HUAWEI
ME909u-523 LTE LGA
Module AT Command
Interface Specification.

HUAWEI ME909u-523 LTE LGA Module
Application Guide

FOTA Application Scenarios

15.4 Manually Querying for Upgrade Firmware Version
15.4.1 Reference Process
Command

Description

AT^FOTACFG="cmnet","","",2

This command is used to configure the
PDP context. For example, sets the
APN to cmnet (the value of APN is
provided by the network server) and
authentication mode to CHAP.

OK
AT^FOTAMODE=0,0,0,1

Configure FOTA mode as manual
query, manual download, manual
upgrade, and resumable data transfer
enabled.

OK
AT^FOTASTATE?

Query the current FOTA state.

^FOTASTATE: 10

Indicate that the FOTA state is idle.

OK
AT^FOTADET

Check for updates.Ensure that the
module is registered with a valid
network before you run this command.

Return OK (success) or return +CME
ERROR (failure).

^FOTASTATE: 11

Report that the query operation is in
process.

^FOTASTATE:
12,12.815.01.04.00,79114,"Support
send sms background"

Report information about the new
version, including the version number,
size of the file to be downloaded, and
change description.

AT^FOTASTATE?

Query the current FOTA state.

^FOTASTATE: 12

Indicate that a new version is found.

OK
AT^FOTADL=0

Delete the detected new version.

OK
AT^FOTASTATE?

Issue 04 (2014-12-08)

Query the current FOTA state.

HUAWEI ME909u-523 LTE LGA Module
Application Guide

^FOTASTATE: 10

FOTA Application Scenarios

Indicate that the FOTA state is idle.

OK
Check for updates after deleting the
new version on the server.

AT^FOTADET
OK
^FOTASTATE: 11
^FOTASTATE: 14

Report that no new version is found.

NOTE


Version detection is allowed only if the FOTA state is idle.



If the module is undergoing the PS data service or IPSTACK service, the FOTA service
cannot be initiated, including version detection, download, and upgrade.



The parameter of the ^FOTASTATE command is a string composed of
ASCII characters. This parameter is used to describe the changed items (corresponding to
the feature items in changelog.xml in the upgrade package) of the new version. The
parameter contains a maximum of five records, each containing up to 255 characters.
Records are separated by semicolon.

15.4.2 Troubleshooting
Possible Error
Information

Solution

An error message is
returned.

+CME ERROR: FOTA is
in collision state

Check whether the PS data
service or IPSTACK service
is going on, or use
AT^FOTASTATE?
command to check whether
the FOTA state is idle.

An error message is
returned.

+CME ERROR: Previous
command is not
complete

Wait for the previous
command to be completely
executed.

An error message is
returned.

+CME ERROR: SIM PIN
required

Use the PIN to unlock the
SIM card.

^FOTASTATE:
13,

Upon a query failure, the
module restores the FOTA
state to idle and deletes the
downloaded files. For error
codes, see the latest
version of HUAWEI
ME909u-523 LTE LGA
Module AT Command
Interface Specification.

Scenario

The module reports a
query failure.

Issue 04 (2014-12-08)

HUAWEI ME909u-523 LTE LGA Module
Application Guide

FOTA Application Scenarios

15.5 Periodically Querying the Version
15.5.1 Reference Process
Command

Description

AT^FOTAMODE=1,0,0,1,7

Configure FOTA mode as auto query, auto
download, auto upgrade, and resumable
data transfer enabled and the query cycle
to seven days.

The command is successfully executed.
The module automatically checks for
updates when the query time arrives.
Report that the query operation is in
process.

^FOTASTATE: 11
^FOTASTATE:
12,12.815.01.04.00,79114,"Support
send sms background"

Report information about the new version.

NOTE


Periodical query is based on either of the two timekeeping modes: network timekeeping or
local timekeeping. If network timekeeping is unavailable, local timekeeping is used. Local
timekeeping may not be accurate.



Local timekeeping is affected by AT+CCLK command. Upon a power-off event, the CCLK
value changes to 1980. After you choose to use local timekeeping and change the CCLK
value, the query operation cannot be carried out at the correct time.

15.5.2 Troubleshooting
Possible Error
Information

Scenario

Auto query is in
use.

Issue 04 (2014-12-08)

No query operation is
initiated when the query
time arrives.

Solution
1. Check if the FOTA state is idle.
If not, change the FOTA state to
idle by using the AT^FOTADL=0
command.
2. Check whether the PS data
service or IPSTACK service is
going on. If yes, terminate the
service.

HUAWEI ME909u-523 LTE LGA Module
Application Guide

FOTA Application Scenarios

15.6 Manually Downloading the Version
15.6.1 Reference Process
Command

Description

AT^FOTASTATE?

Query the current FOTA state.

^FOTASTATE: 12

Indicate that a new version is found.

OK
AT^FOTADL=1

Run this command to manually
download the version or to resume data
transfer.

The command is successfully executed.
Report that the download is in process.

^FOTASTATE: 30
AT^FOTADL=2

Run this command to manually
download Pause.

The command is successfully executed.

^FOTASTATE: 31

Report that the download is pending. If
the resumable data transfer mode is
disabled, the command will return
"+CME ERROR: Operation not
supported".

AT^FOTADL=1

Run this command to manually
download the version or to resume data
transfer.

The command is successfully executed.
Report that the download is in process.

^FOTASTATE: 30
AT^FOTADLQ

Query the download progress.

^FOTADLQ: 1,"IMAGE",1324,1324
^FOTADLQ: 2,"XNV",47104,77778

Return that the IMAGE file size is 1324
bytes, and 1324 bytes have been
downloaded.

The XNV file size is 77778 bytes, and
47104 bytes have been downloaded.

^FOTASTATE: 40

Report that the version is completely
downloaded and passes the MD5
verification.

AT^FOTADL=?

Query the parameters supported by the
command.

Issue 04 (2014-12-08)

HUAWEI ME909u-523 LTE LGA Module
Application Guide

^FOTADL: (0-2)

FOTA Application Scenarios

Return the supported parameters.
0: not to download.

1: download.
2: download pause

NOTE


Version download is allowed only if the FOTA state is 12 (new version detected) and 31
(download pending).



The prerequisites for version download and query are:
Module registered with a valid network.
No ongoing PS data service or IPSTACK service.

15.6.2 Troubleshooting
Scenario

Possible Error
Information

Solution

An error message is
returned.

+CME ERROR:
Operation not
supported

The command is
incorrect.

An error message is
returned.

+CME ERROR: SIM PIN
required

Use the PIN to unlock the
SIM card.

ERROR

The command is
executed in incorrect
FOTA state. Ensure that
the FOTA state is 12 or
31 before you run the
command.

^FOTASTATE:
20,

Upon a download failure,
the module restores the
FOTA state to idle and
deletes the downloaded
file. For error codes, see
the latest version of
HUAWEI ME909u-523
LTE LGA Module AT
Command Interface
Specification.

An error message is
returned.

The module reports a
download failure.

Issue 04 (2014-12-08)

HUAWEI ME909u-523 LTE LGA Module
Application Guide

FOTA Application Scenarios

15.7 Automatically Downloading the Firmware
15.7.1 Reference Process
Command

Description

AT^FOTAMODE=0,1,0,1

Configure auto download mode.

OK
Run this command to manually check
for upgrades.

AT^FOTADET
OK
^FOTASTATE: 11
^FOTASTATE:
12,12.815.01.01.00,79102,"Support
send sms background"

Report that the query operation is in
process.
Report that a new version is found and
information about the new version.

^FOTASTATE: 30

Automatically download the new version
and reports that the download is in
process.

^FOTASTATE: 40

Report that the version is completely
downloaded and passes the MD5
verification.

15.7.2 Troubleshooting
None

15.8 Using the Resumable Data Transfer Function
15.8.1 Reference Process
Command

Description

AT^FOTAMODE=0,0,0,1

Enable resumable data transfer.

OK
AT^FOTASTATE?

Query the FOTA state.

^FOTASTATE: 31

Indicate that the download is pending.

OK
AT^FOTADL=1

Issue 04 (2014-12-08)

Resume the transmission from the
break point.

HUAWEI ME909u-523 LTE LGA Module
Application Guide

FOTA Application Scenarios

OK
^FOTASTATE: 30

Report that the download is in process.

^FOTASTATE: 40

Report that the download is complete.

NOTE

If resumable data transfer is disabled, the download pending due to network disconnection or
TCP link breakoff will be regarded as a download error.

15.8.2 Troubleshooting
Possible Error
Information

Scenario
The function of
resumable data transfer
is disabled, and the
network or TCP link is
disconnected.
The function of
resumable data transfer
is enabled, and the
module is powered off.

^FOTASTATE: 20,18
Or other download error

^FOTASTATE: 31

Solution
The module deletes the
downloaded file and
restores the FOTA state
to idle.
The module prompts that
the download can be
resumed.

15.9 Manually Cancelling the Download
15.9.1 Reference Process
Command

Description

AT^FOTADL=1

Initiate the version download.

OK
^FOTASTATE: 30

Report that the download is in process.

AT^FOTADL=0

Cancel the download, delete the
downloaded file, and restore the FOTA
state to idle.

The command is successfully executed.

AT^FOTASTATE?

Issue 04 (2014-12-08)

HUAWEI ME909u-523 LTE LGA Module
Application Guide

^FOTASTATE: 10
OK

FOTA Application Scenarios

Report that the operation to cancel the
download is complete. The FOTA state
is idle.

15.9.2 Troubleshooting
None

15.10 Manually Upgrading the Version
15.10.1 Reference Process
Command

Description

AT^FOTASTATE?
^FOTASTATE: 40

Report that the download is complete.

OK
AT^FWUP

Run this command to manually start the
upgrade.

The command is successfully executed.

^FOTASTATE: 50

Report that the upgrade starts. The module
restarts, and then starts the upgrade.

^FOTASTATE: 90

Report that the upgrade succeeds.

NOTE


The module restarts several times during the upgrade. Ensure that during this process, the
module is powered on. Do not send AT commands during the upgrade.



If the upgrade fails, the module enters forcible loading mode, you can perform any of the
following:
1. One-click upgrade from devices running Windows (full upgrade using the .exe file)
2. Upgrade from devices that run Android or Linux using UpdateWizard (full upgrade using
the .bin file)
3. Local upgrade no matter the host having the operation system or not (for details, see
chapter 12 .

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100

HUAWEI ME909u-523 LTE LGA Module
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FOTA Application Scenarios

15.10.2 Troubleshooting
Scenario

Possible Error
Information

Solution

An error message is
returned.

+CME ERROR: Previous
command is not
complete

Wait for the previous
command to be completely
executed.

An error message is
returned.

The module reports an
upgrade failure.

+CME ERROR: FOTA is
in collision state

1. Check whether the PS
data service or IPSTACK
service is going on.
2. Check that the FOTA
state is not 40 (download is
complete).

ERROR

The command format is
incorrect. Please see the
latest version of HUAWEI
ME909u-523 LTE LGA
Module AT Command
Interface Specification.

^FOTASTATE:
80,

The module automatically
changes the FOTA state to
idle and deletes the
downloaded file. You can
use the AT^FOTADL=0
command to set the FOTA
state to idle manually. For
error codes, see the latest
version of HUAWEI
ME909u-523 LTE LGA
Module AT Command
Interface Specification.

15.11 Automatically Upgrading the Version
15.11.1 Reference Process
Command

Description

AT^FOTAMODE=0,1,1,1

Configure FOTA mode as auto
download and auto upgrade.

OK
AT^FOTADET

Issue 04 (2014-12-08)

Check for upgrades.

101

HUAWEI ME909u-523 LTE LGA Module
Application Guide

FOTA Application Scenarios

OK
^FOTASTATE: 11
^FOTASTATE:
12,12.815.01.02.00,79114,"Support
send sms background"

Return information about the new
version.

^FOTASTATE: 30

Automatically download the version.

^FOTASTATE: 40

Report that the version is completely
downloaded and passes the MD5
verification.

^FOTASTATE: 50
^FOTASTATE: 90

Report that the module is ready for the
upgrade.
Report that the upgrade succeeds.

AT^FOTASTATE?

Query the FOTA state.

^FOTASTATE: 10

The FOTA state changes to idle after
the upgrade.

15.11.2 Troubleshooting
None

Issue 04 (2014-12-08)

102

HUAWEI ME909u-523 LTE LGA Module
Application Guide

Appendix

16.1 Relative Documents
1.

HUAWEI ME909u-523 LTE LGA Module AT Command Interface Specification

3GPP TS 27.007 AT command set for User Equipment (UE)

3GPP TS 27.005 Equipment (DTE-DCE) interface for Short Message Service
(SMS) and Cell Broadcast Service (CBS)

3GPP TS 23.040 Technical realization of the Short Message Service(SMS)

3GPP TS 31.102 Universal Subscriber Identity Module(USIM) application

3GPP TS 24.008 Mobile radio interface Layer 3 specification; Core network
protocols; Stage 3

3GPP TS 29.002 Mobile Application Part (MAP) specification

3GPP TS 22.004 General on supplementary services

ETSI TS 102.221 Smart Cards; UICC-Terminal interface; Physical and logical
characteristics

16.2 Acronyms and Abbreviations
Table 16-1 List of Abbreviations
Acronym or Abbreviation

Expansion

3GPP

Third Generation Partnership Project

AGPS

Assisted Global Positioning System

APN

Access Point Name

Attention

Circuit Switched (CS) domain

DCE

Data Circuit Equipment

DTE

Data Terminal Equipment

ECM

Ethernet Control Model

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103

HUAWEI ME909u-523 LTE LGA Module
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Appendix

Acronym or Abbreviation

Expansion

GPRS

General Packet Radio Service

GPS

Global Positioning System

GSM

Global System for Mobile Communications

IMEI

International Mobile Equipment Identity

Internet Protocol

LTE

Long Term Evolution

Mobile Equipment

PDP

Packet Data Protocol

PDU

Protocol Data Unit

Personal Identity Number

PPP

Point-to-Point Protocol

PUK

PIN Unblocking Key

Packet Switched (PS) domain

QoS

Quality of Service

SIM

Subscriber Identity Module

SMS

Short Message Service

Terminal Equipment

UART

Universal Asynchronous Receiver/Transmitter

User Equipment

UMTS

Universal Mobile Telecommunications System

USIM

Universal Subscriber Identity Module

WCDMA

Wideband CDMA

Table 16-2 Phonebook-related abbreviations
Abbreviation

Full Name

SIM phonebook

SIM emergency number

SIM own numbers

Issue 04 (2014-12-08)

104

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Huawei 目录 (Contents) ME909u 523 LTE LGA Module Application Guide

HUAWEI ME909u-523 LTE LGA Module Application Guide-(V100R001_04, English)

HUAWEI ME909u-523 LTE LGA Module Application Guide-(V100R001_04, English)

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