Huawei Refrigerator ME909u 521 User Manual

HUAWEI ME909u-521 LTE LGA Module

Application Guide

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Date

2013-07-05

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HUAWEI ME909u-521 LTE LGA Module

Application Guide

About This Document

Revision History

Document Date

Version

Chapter

Description

2013-07-05

Creation

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Contents

1 Overview.........................................................................................................................................7

1.1 Conventions and Definitions ............................................................................................................ 7

1.1.1 Conventions............................................................................................................................. 7

1.1.2 Definition s ................................................................................................................................ 7

1.2 Organization of This Document........................................................................................................ 8

1.3 Basic AT Command Processing Principles ...................................................................................... 9

1.3.1 Ports ........................................................................................................................................ 9

1.3.2 AT Command Processing Mechanism..................................................................................... 9

2 Initialization Application Scenarios .......................................................................................14

2.1 Startup Indication ^SYSSTART ...................................................................................................... 14

2.1.1 Reference Proces s ................................................................................................................ 14

2.1.2 Troubleshootin g ..................................................................................................................... 14

2.2 Querying Basic Informatio n ............................................................................................................ 15

2.2.1 Reference Proces s ................................................................................................................ 15

2.2.2 Troubleshootin g ..................................................................................................................... 15

2.3 Network Service Operations .......................................................................................................... 16

2.3.1 Reference Proces s ................................................................................................................ 16

2.3.2 Troubleshootin g ..................................................................................................................... 17

3 Network Searching and Registration Application Scenarios.............................................18

3.1 Searching and Registering Network............................................................................................... 18

3.1.1 Reference Proces s ................................................................................................................ 18

3.1.2 Troubleshootin g ..................................................................................................................... 20

4 ECM Application Scenario s ......................................................................................................21

4.1 ECM Dialing ................................................................................................................................... 21

4.1.1 Reference Proces s ................................................................................................................ 21

4.1.2 Troubleshootin g ..................................................................................................................... 22

4.2 Querying the Dial-up Connection State.......................................................................................... 22

4.2.1 Reference Proces s ................................................................................................................ 22

4.2.2 Troubleshootin g ..................................................................................................................... 23

4.3 Disconnecting the Dial-up Connectio n ........................................................................................... 23

4.3.1 Reference Proces s ................................................................................................................ 23

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4.3.2 Troubleshootin g ..................................................................................................................... 23

5 SMS Application Scenarios ......................................................................................................24

5.1 Overview ........................................................................................................................................ 24

5.2 Initializing SMS............................................................................................................................... 26

5.2.1 Reference Proces s ................................................................................................................ 26

5.2.2 Troubleshootin g ..................................................................................................................... 29

5.3 Sending Short Messag e ................................................................................................................. 29

5.3.1 Reference Proces s ................................................................................................................ 29

5.3.2 Troubleshootin g ..................................................................................................................... 31

5.4 Reading Short Message s ............................................................................................................... 32

5.4.1 Reference Proces s ................................................................................................................ 32

5.4.2 Troubleshootin g ..................................................................................................................... 34

5.5 Deleting Short Message s ............................................................................................................... 34

5.5.1 Reference Proces s ................................................................................................................ 34

5.5.2 Troubleshootin g ..................................................................................................................... 35

6 Phonebook Application Scenarios ..........................................................................................36

6.1 Overview ........................................................................................................................................ 36

6.2 Memory Operations........................................................................................................................ 36

6.2.1 Reference Proces s ................................................................................................................ 36

6.2.2 Troubleshootin g ..................................................................................................................... 37

6.3 Reading Phonebook Entries .......................................................................................................... 38

6.3.1 Reference Proces s ................................................................................................................ 38

6.3.2 Troubleshootin g ..................................................................................................................... 39

6.3.3 Writing/Deleting Phonebook Entries...................................................................................... 40

6.3.4 Reference Proces s ................................................................................................................ 40

6.3.5 Troubleshootin g ..................................................................................................................... 41

6.4 Searching for Phonebook Entries .................................................................................................. 42

6.4.1 Reference Proces s ................................................................................................................ 42

6.4.2 Troubleshootin g ..................................................................................................................... 43

6.5 Querying User Number .................................................................................................................. 43

6.5.1 Reference Proces s ................................................................................................................ 43

6.5.2 Troubleshootin g ..................................................................................................................... 44

6.6 Setting the TE's Character Set s ..................................................................................................... 44

6.6.1 Reference Proces s ................................................................................................................ 44

6.6.2 Troubleshootin g ..................................................................................................................... 45

7 SIM Operation Application Scenarios....................................................................................46

7.1 PIN Operations............................................................................................................................... 46

7.1.1 Reference Proces s ................................................................................................................ 46

7.1.2 Troubleshootin g ..................................................................................................................... 47

7.2 CRSM Command ........................................................................................................................... 48

7.2.1 Reference Proces s ................................................................................................................ 48

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7.2.2 Troubleshootin g ..................................................................................................................... 50

8 Sleeping and Waking Up Application Scenarios .................................................................51

8.1 Hardware Interface s ....................................................................................................................... 52

8.2 Sequence Diagram......................................................................................................................... 53

8.3 Software Interfaces ........................................................................................................................ 54

8.3.1 Principl e ................................................................................................................................. 54

8.3.2 USB and Slee p ...................................................................................................................... 56

8.3.3 UART and Sleep.................................................................................................................... 57

8.3.4 Module Wake-up.................................................................................................................... 57

8.3.5 Host Woken up by Module .................................................................................................... 57

8.4 Application Scenarios: System with USB Connection onl y ............................................................ 59

8.4.1 Hardware Connection............................................................................................................ 59

8.4.2 Software Procedur e ............................................................................................................... 59

8.4.3 Advantage s ............................................................................................................................ 60

8.5 Application Scenarios: System with USB and WAKEUP_OUT...................................................... 60

8.5.1 Hardware Connection............................................................................................................ 60

8.5.2 Software Procedur e ............................................................................................................... 60

8.5.3 Advantage s ............................................................................................................................ 61

8.6 System with Other Connection Methods........................................................................................ 61

9 Thermal Protection Application Scenarios ............................................................................62

9.1 Pre-configuratio n ............................................................................................................................ 62

9.1.1 Troubleshootin g ..................................................................................................................... 62

9.2 Thermal Protection Proces s ........................................................................................................... 62

10 Module Powering Off and Resetting Application Scenarios...........................................64

10.1 Restarting the ME......................................................................................................................... 64

10.1.1 Reference Proces s .............................................................................................................. 64

10.1.2 Troubleshootin g ................................................................................................................... 64

10.2 Power Off M E ............................................................................................................................... 64

10.2.1 Reference Proces s .............................................................................................................. 64

10.2.2 Troubleshootin g ................................................................................................................... 65

11 Appendix ....................................................................................................................................66

11.1 Relative Documents ..................................................................................................................... 66

11.2 Acronyms and Abbreviations ........................................................................................................ 66

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Overview

This document is intended to provide references for customers to choose appropriate

command sequences to start using the ME909u-521 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

Module

Indicates that the module is registered with a

LTE/UMTS/GSM network.

HUAWEI LTE module

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Mobile equipment

Application

network

1.2 Organization of This Document

Chapter

Description

Chapter 1 Overview

Describes the contents and organization of this

document

Chapter 2 Initialization

Application Scenarios

Describes scenarios for initialization

Chapter 3 Network Searching

and Registration Application

Scenarios

Describes scenarios for network searching and

registration

Chapter 4 ECM Application

Scenarios

Describes scenarios for ECM

Chapter 5 SMS Application

Scenarios

Describes scenarios for the text message

Describes scenarios for phonebook

Chapter 6 Phonebook

Application Scenarios

Chapter 7 SIM Operation

Application Scenarios

Describes scenarios for PIN management

Describes scenarios for power management

Describes scenarios for thermal protection

Chapter 8 Sleeping and Waking

Up Application Scenarios

Chapter 9 Thermal Protection

Application Scenarios

Chapter 10 Module Powering Off Describes scenarios for powering off and

and Resetting Application

Scenarios

restarting

Chapter11 Appendix

Appendix

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Overview

1.3 Basic AT Command Processing Principles

1.3.1 Ports

The ME909u-521 module provides three ports to interact with its host:



MODEM port: simulated using USB, for AT command interaction and

establishing data connection.

Port name: HUAWEI Mobile Connect-3G Modem



PCUI port: simulated using USB, for AT command interaction only.

Port name: HUAWEI Mobile Connect-3G PCUI Interface



ECM port: simulated using USB, for establishing communication connection.

Port name: CDC Ethernet Control Model (ECM)

The ME909u-521 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-3G Application Interface

A host controls a module using AT commands. If AT commands are unavailable, a

module can be deemed as unavailable.

1.3.2 AT Command Processing Mechanism

A module processes AT commands from the ports (MODEM, PCUI) 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.

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.

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Figure 1-1 AT command processing sequence diagram

AT command 1

AT command 2

Process AT

command 1

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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Example:

AT +CPIN ?

+CPIN: READY

All AT commands entered during

this period of time will be

ignored.

AT +CMGL =4

+CMGL : 0,3,,19

07813108608805 F911320 B813109730116 F20000A705B3D84C4603

+CMGL : 1,2,,18

07813108608805 F931FF0B813109730155 F30000A704F4F29C0E

+CMGL : 2,2,,18

07813108608805 F931FF0B813109730155 F30000A704F4F29C0E

+CMGL : 3,2,,28

All AT commands entered

07813108608805 F931FF0B813109730155 F30000A71061F69CAC 2EBF 69B5FA 4

D36CBC 168

during this period of time will

be ignored.

+CMGL : 4,2,,24

07813108608805 F931FF0B813109730155 F30000A70BB 05C2D5DB 7C1D4ECB 4

+CMGL : 5,2,,22

07813108608805 F931FF0B813109730155 F30000A7096E333B8DCBE 77079

+CMGL : 6,2,,22

07813108608805 F931FF0B813109730155 F30000A70930598 D26A7DBDF 68

Some special AT commands can be aborted by new AT commands. Such special

commands are called abortive commands.

The ME909u-521 supports the following abortive AT commands:



The AT+COPS Set command



AT+CLCK

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Example:

Before the results ofAT+COPS

is returned, enter any characters

(such as "AT"), the module will

terminate the processing of

AT+COPS=1,2,23415

AT+COPS and returnOK. 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-521 LTE LGA Module AT Command Interface Specification.

Example:

AT+CREG?

+CME ERROR: SIM failure

Note:

SIM failure indicate that SIM card is not inserted.

1.3.3 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 60s

messages)

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.

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

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

4. If the host times out (the host waits for a response for over 30 seconds) three

times when waiting for the response from the module, go to step 5. Otherwise go

to step 1.

5. The host deems that the current module does not exist or is unavailable. Close

the port, stop sending all AT commands, exit the procedure to determine

whether the module is normal, and re-search for modules.

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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.

Notes:



^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.

2.1.2 Troubleshooting

Possible Error

Information

Scenario

Solution

The module presents

^SYSSTART during startup.

After that, the module

Indicate that the

module has been

reset.

If ^SYSSTART is presented

repeatedly, send the module

to the specified repair center.

presents ^SYSSTART again.

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Initialization Application Scenarios

2.2 Querying Basic Information

2.2.1 Reference Process

Command

Description

Query software version.

AT+GMR/CGMR

Software version

Software version. e.g. 11.103.03.00.00

AT+GMI/CGMI

Query manufacturer identification.

Manufacturer

Identification

For example: Huawei Technologies Co., Ltd.

AT+GMM/CGMM

Model identification

Query model identification.

For example: ME909u-521

AT+GSN/CGSN

IMEI

Query product IMEI.

For example: 865261010004010

Note:

The previously listed commands are Query commands and cannot be used to configure

settings.

2.2.2 Troubleshooting

Possible Error

Information

Scenario

Solution

This error occurs when a

module's IMEI is not specified.

This problem is solved after

the IMEI is written into the

module.

+CME ERROR: memory

failure

AT+GSN/CGSN

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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

AT+CPIN?

Query whether a module's SIM card is password

protected. READY indicates that the SIM card is

ready.

+CPIN: READY

AT^HCSQ?

Query the network signal quality.

^HCSQ:

"WCDMA",30,30,58

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"

AT+COPS=0

Automatically search for networks.

AT+CREG?

+CREG: 0,1

Query the state of the currently registered network.

AT+CREG=1

Set the +CREG unsolicited indication.

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Initialization Application Scenarios

2.3.2 Troubleshooting

Scenario

Possible Error Information

Solution

No SIM card is detected. Insert

a SIM card.

AT+COPS?

+CME ERROR: SIM failure

No SIM card is detected. Insert

a SIM card.

AT+CREG?

+CME ERROR: SIM failure

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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

AT+COPS=0

Description

Enable automatic search for networks.

AT+COPS=1,2,"46000"

Manual search for the appointed network.

AT+COPS=?

Search for all networks, and return the

networks.

AT+CREG=2

Enable the unsolicited indication when

network registration state changes.

AT^SYSCFGEX="00",3FFFFFFF Set the system mode, network access order,

,1,2,7FFFFFFFFFFFFFFF,,

frequency band, roaming support, domain,

and other features.

AT^SYSINFOEX

Query the system service state, domain,

roaming status, and system mode.

^SYSINFOEX:

2,3,0,1,,1,"GSM",3,"EDGE"

AT^HCSQ?

Query the signal quality.

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Network Searching and Registration Application

Scenarios

Command

Description

^HCSQ:"GSM",73

Figure 3-1 Automatic search for networks

Automatic search for networks

Start

Enable automatic

search for networks.

AT+COPS=0

Return OK

The unsolication command

^SRVST indication for

the change of network state.

End

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Network Searching and Registration Application

Scenarios

Figure 3-2 Manual search for networks

Manual search for networks

Start

Enable automatic

search for networks.

AT+COPS=?

Display the

networks found.

Select and register with a network.

AT+COPS=1[,<format>[,<oper>[,<rat>]]]

End

3.1.2 Troubleshooting

Possible Error

Information

Scenario

Solution

+CME ERROR: SIM

failure

No SIM card is detected. Insert

a SIM card.

AT+COPS?

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)

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", Set up a dial-up connection using the

"huawei",1

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 the dial-up is successful, the module will establish the DHCP service

automatically.

2. The PC driver will get the dial-up state and send net_ready state to the network

manage.

3. The network manage sends the DHCP service discover.

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ECM Application Scenarios

4. The module responses the service discover, and then sends the IP and DNS

address which is obtained from the PDP active process to the network managing

device.

4.1.2 Troubleshooting

Scenario

Possible Error Information Solution

No SIM card is

AT^NDISDUP=1,1,"1234

+CME ERROR: SIM failure

detected. Insert a SIM

card.

NDISEND indicates the

failure reason during the

dial-up.

AT^NDISDUP=1,1,"4321

","huaei","huawei",1

^NDISSTAT: 0,33,,"IPV4"

^NDISEND:1,29

29 indicates that the

authenticated

information is not

correct.

NDISEND indicates the

failure reason during the

dial-up.

AT^NDISDUP=1,1,"abcd

33 indicates that request

service is not specified.

^NDISSTAT: 0,33,,"IPV4"

^NDISEND:1,33

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?

^NDISSTATQRY: 0,0,,IPV4

Query the dial-up connection state.

Report that the connection is not set up.

AT^NDISSTATQRY?

^NDISSTATQRY: 1,,,IPV4

Query the dial-up connection state.

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

AT^NDISDUP=1,0

Description

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 GSM MEs and Short Message Entities

(SMEs). ME909u-521 only supports protocol data unit (PDU) mode message.

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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SMS Application Scenarios

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

Receive

short messages

Send short

messages

Read short

messages

Status report

End

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SMS Application Scenarios

5.2 Initializing SMS

5.2.1 Reference Process

Command

Description

AT+CSCA?

Query the SMSC address.

+CSCA:

"13800688509",129

AT+CSCA="+8613800755

500"

Set the SMSC address to the SMSC number of

China Mobile's Shenzhen Branch.

AT+CSMS?

+CSMS: 0,1,1,1

Query the short message service type.

AT+CNMI?

Query the configuration of the new message

indications to TE.

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

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

Configure the new message indications to TE.

Query the preferred short message storage.

AT+CPMS?

+CPMS:

"SM",12,20,"SM",12,20,"S

M",12,20

AT+CPMS="SM"

Set SM as short message storage medium.

Query the MO SMS bearer domain.

AT+CGSMS?

+CGSMS: 1

AT+CMGF?

+CMGF: 0

Query the short message format.

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Command

Description

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-521 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-521, 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

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

Query the preferred storage

for the current message.

AT+CPMS?

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

AT+CGSMS?

+CGSMS: 1

AT+CMGF=0

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Figure 5-5 SMS initialization process – part 3

AT+CMGF?

+CMGF:0

AT+CMGF=0

End

5.2.2 Troubleshooting

Possible Error

Information

Scenario

Solution

+CME ERROR: SIM

PIN required

Error information is

returned in response to

one of the previous

commands.

Enter the correct PIN.

+CMS ERROR: SIM

busy

SIM card initialization has not

completed. Try again later.

5.3 Sending Short Message

5.3.1 Reference Process

Command

Description

AT+CMGF=0

Set the short message format to PDU.

AT+CSCA?

Query the SMSC address.

+CSCA: "13800688509",129

AT+CMGS=18

Send a PDU message without the service center

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Command

Description

>0031000B813109731147F4 address. The value of SMSC address is the setting

0000FF04F4F29C0E\x0A

of +CSCA command.

+CMGS: 168

The message is successfully sent.

AT+CMGS=18

Send a PDU message with the correct service

center address.

>0891683108608805F93100

0B813109731147F40000FF0

4F4F29C0E\x1A

+CMGS: 169

The message is successfully sent.

AT+CMGS=18

Send a PDU message with the wrong service

center address.

>0891683108608805F03100

0B813109731147F40011FF0

4F4F29C0E\x1A

+CMS ERROR: Network out The message is unsuccessfully sent.

of order

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.

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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 <ESC> to cancel

the command

Press <ctrl-Z> to send

the command.

0031000B813109731147F4

0891683108608805F931000B

0000FF04F4F29C0E

<ESC>

813109731147F40000FF04F4

F29C0E<ctrl-Z>

Message sent

successfully

Example: Message

not sent

Message sent

unsuccessfully

+CMS ERROR:

Network out of

order

+CMGS:1

End

5.3.2 Troubleshooting

Possible Error

Information

Scenario

Solution

Error information is

returned in response

to one of the previous out of order

commands.

Check the validity of the

service center address or the

state of the current network.

+CMS ERROR: Network

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5.4 Reading Short Messages

5.4.1 Reference Process

Command

Description

List all received unread messages.

AT+CMGL=0

+CMGL: 2,0,,48

0891683108608805F9040D916831 The format of short messages can refer to

09732097F2000001432619001001 the AT+CMGL command.

F506215744FD3D1A0E930C8429

6D9EC370BFDE86C2F23228FFA

EFF00

+CMGL: 4,0,,64

0891683108608805F9040D916831

09732097F2000001403261310500

32506215744FD3D1A0E930C8429

6D9EC370BFDBE83C2B0380F6A

97416FF7B80C6AVFE5E510

AT+CMGR=4

Read the message stored in the message

storage location 4.

+CMGR: 1,,64

0891683108608805F9040D916831 The format of short messages can refer to

09732097F2000001403261310500 the AT+CMGR command.

32506215744FD3D1A0E930C8429

6D9EC370BFDBE83C2B0380F6A

97416FF7B80C6AVFE5E510

There are two methods to read short messages:



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

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Message State

PDU Mode

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.

Figure 5-7 Reading short messages

Reading short messages

Start

List received unread

messages in PDU format

AT+CMGL=0

+CMGL:<index1>,0,,<length>

<pdu> (messages in PDU format)

......

+CMGL:<indexn>,0,,<length>

<pdu> (messages in PDU format)

AT+CMGR=n

PDU format

+CMGR:n,,<length>

<pdu> (messages in PDU format)

End

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5.4.2 Troubleshooting

Possible Error

Information

Scenario

Solution

Error information is

returned in response

to one of the previous memory index

commands.

+CMS ERROR: invalid

Check the validity of the index.

5.5 Deleting Short Messages

5.5.1 Reference Process

Command

AT+CMGF=0

Description

Set the message format to PDU mode.

AT+CMGL=4

+CMGL: 6,2,,30

List all short messages (PDU mode).

0011000A917179876213000

0A713C8329BFD6681D0EF

3B282C2F83F2EFFA0F

+CMGL: 11,1,,36

0791947106004013240C919

47159826990000030804131

15748013C8329BFD6681D0

EF3B282C2F83F2EFFA0F

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:

−

1: Delete all read messages in the preferred message storage, and keep the

unread, sent and unsent messages.

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−

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.

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,<parameters>

07919471060040

+CMGL: 2,<parameters>

07919471060040

......

Delete the message

stored in

location n in the preferred

storage.

Equivalent to

AT+CMGD=n

X:(0-999)

AT+CMGD=x,DelFlag

AT+CMGD=n

AT+CMGD=n,0

+CMSERROR:

invalid memory

index

End

5.5.2 Troubleshooting

Possible Error

Information

Scenario

Solution

Error information is

returned in response

to one of the previous memory index

commands.

+CMS ERROR: invalid

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")

AT+CPBS="SM"

Set the current storage type to "SM".

AT+CPBS?

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.

+CPBS: "SM",241,250

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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”)

Query the current phonebook storage.

AT+CPBS?

+CPBS:“ON”,0,0

Select SM as the storage type

AT+CPBS=“SM”

End

6.2.2 Troubleshooting

Possible Error

Information

Scenario

Solution

Phonebook initialization has

not completed. Try again

later.

+CME ERROR: SIM

busy

Error information is

returned in response to

one of the previous

commands.

+CME ERROR: SIM PIN

required

Enter the correct PIN.

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Possible Error

Information

Scenario

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

AT+CPBR=1,20

List all phonebook entries by their indexes.

+CPBR:

1,"+491765864491",145,"J

ohn Smith"

+CPBR:

2,"+44545896638",145,"Pa

ul Williams"

+CPBR:

3,"+44556565657",145,"Jo

e Anderson"

+CPBR:

4,"+445636934485",145,"

Oscar Thomso”

+CPBR:

5,"+445565656899",145,"H

annah Adams"

+CPBR:

6,"+447982865563",145,"S

amantha Young"

+CPBR:

7,"+449585315798",145,"A

lexis Wright"

+CPBR:

8,"+445415454646",145,"A

bigail Cox"

+CPBR:

12,"+446565689115",145,"

Kyla Clark"

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Command

Description

Figure 6-2 Reading phonebook entries

Reading phonebook entries

Start

Query the current phonebook storage type.

FD phonebook can store

up to 10 entries; currently 3

entries are stored.

Initialize the

phonebook.

+CPBS:“ON”,1,4

+CPBS:“SM”,4,250

Lists all phonebook entries from location x to location y.

AT+CPBR=x,y

Correct response

+CPBR:

The ending location is greater

than the greatest phonebook entry index.

1,“+491765864491”,145,“John‎Smith”

+CPBR:

+CME ERROR:

invalid index

2,“+445564854245”,145,“Ashley‎Jones”

...

End

6.3.2 Troubleshooting

Possible Error

Information

Scenario

Solution

+CME ERROR: SIM

busy

Phonebook initialization has

not completed. Try again later.

Error information is

returned in response

+CME ERROR: SIM PIN

to one of the previous required

Enter the correct PIN.

Enter the correct PUK.

commands.

+CME ERROR: SIM

PUK required

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Possible Error

Information

Scenario

Solution

The index is invalid. Check

that index 1 is within the

supported range.

+CME ERROR: invalid

index

AT+CPBR=<index1>

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.

AT+CPBR=<index1>, +CME ERROR: invalid

index

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

AT+CPBR=<index1>

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.

AT+CPBR=<index1>, +CME ERROR: not

<index2> found

6.3.3 Writing/Deleting Phonebook Entries

6.3.4 Reference Process

Command

Description

AT+CPBR=?

Query the ranges of parameters related to the

phonebook entries.

+CPBR: (1-250),24,14

AT+CPBW="5","13903702 Write a phonebook record.

805",,"test"

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.

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

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

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,

Write a phonebook

entry to a vacant location.

the entry will be overwritten.

AT+CPBW=,"+44546465

4568",145,"Paul Williams"

AT+CPBW=1,"+44546465

4568",145,"Paul Williams"

+CEM ERROR:

invalid index

+CEM ERROR:

memory full

End

6.3.5 Troubleshooting

Possible Error

Information

Scenario

Solution

Phonebook initialization has

not completed. Try again

later.

Error information is

returned in response to

one of the previous

+CME ERROR: SIM

busy

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Possible Error

Information

Scenario

Solution

commands.

+CME ERROR: SIM

PIN required

Enter the correct PIN.

Enter the correct PUK.

+CME ERROR: SIM

PUK required

Error information is

returned when writing an +CME ERROR: dial

Check that the phone

number is not too long.

entry into the

phonebook.

string too long

Error information is

returned in response to

one of the previous

commands.

Check that the location index

and phone number type are

valid.

+CME ERROR: invalid

index

The phone number to be

written into the phonebook

contains invalid characters.

Delete the invalid characters

and try again.

Error information is

returned when writing an +CME ERROR: invalid

entry into the

phonebook.

characters in dial string

AT+CPBW=,"123456789

01234567890123",128,"

80534E4E3A"

+CME ERROR:

memory full

The storage is full. Delete

some entries and try again.

6.4 Searching for Phonebook Entries

6.4.1 Reference Process

Command

Description

AT+CPBF=<findtext>

Search the current storage for

phonebook entries that contain

the <findtext> field.

+CBPF: <index1>,<number>,<type>,<text>

+CBPF: <index2>,<number>,<type>,<text>

...

AT+CPBF=?

Return the maximum phone

number length and maximum

name length supported by the

current phonebook storage.

+CPBF: <nlength>,<tlength>

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Phonebook Application Scenarios

6.4.2 Troubleshooting

Possible Error

Information

Scenario

Solution

Phonebook initialization has

not completed. Try again

later.

+CME ERROR: SIM

busy

Error information is returned

in response to one of the

previous commands.

+CME ERROR: SIM

PIN required

Enter the correct PIN.

Enter the correct PUK.

+CME ERROR: SIM

PUK required

No matches were found.

Check whether the current

phonebook storage has

entries that match the search

criterion.

+CME ERROR: not

found

AT+CPBF=<findtext>

6.5 Querying User Number

6.5.1 Reference Process

Command

Description

AT+CNUM

Query the SIM number.

+CNUM: [<alpha1>],<number1>,<type1>

+CNUM: [<alpha2>],<number2>,<type2>

...

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Phonebook Application Scenarios

6.5.2 Troubleshooting

Possible Error

Information

Scenario

Solution

Phonebook initialization has

not completed. Try again

later.

+CME ERROR: SIM

busy

Error information is

returned in response to

one of the previous

commands.

+CME ERROR: SIM PIN

required

Enter the correct PIN.

Enter the correct PUK.

+CME ERROR: SIM

PUK required

6.6 Setting the TE's Character Sets

6.6.1 Reference Process

Command

Description

AT+CSCS=?

Query the character sets supported by the

UE.

+CSCS: ("IRA","GSM","UCS2")

AT+CSCS?

+CSCS: "IRA"

Query the current character set.

AT+CPBR=1

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".

+CPBR:

1,"0123456789",129,"HUAWEI"

AT+CSCS="UCS2"

Set the TE's character set to UCS

alphabet.

AT+CPBW=1,"0123456789",129,"00 The character set is the UCS alphabet.

4800550041005700450049" The content of the phonebook entry's

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Phonebook Application Scenarios

name field is

004800550041005700450049, which is

"HUAWEI" in the IRA.

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,"004800550041

005700450049"

6.6.2 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,"<pwd>"

Enable PIN authentication. (<pwd>

specifies the PIN. See note 1.)

AT+CLCK="SC",2

+CLCK: 1

Request the SIM card state.

"+CLCK: 1" means that the SIM card is

not blocked.

AT+CLCK="SC",0," <pwd>"

Disable the SIM card lock. (<pwd>

specifies the PIN. See note 1.)

AT+CLCK="SC",2

+CLCK: 0

Request the SIM card state.

"+CLCK: 0" means that the SIM card is

not blocked.

AT+CLCK="SC",1,"<pwd>"

Enable PIN authentication. (<pwd>

specifies the PIN. See note 1.)

AT+CPIN="<pwd>"

Request the PIN after the module

restarts.

AT+CPIN?

+CPIN: READY

Request the PIN state.

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SIM Operation Application Scenarios

AT+CLCK="SC",2

+CLCK: 1

Request the SIM card state.

"+CLCK: 1" means that the SIM card is

not blocked.

AT+CPWD="SC","<oldpwd>","1234" Change the PIN (1234 will be the new

PIN).

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

+CME ERROR: incorrect password

AT+CPWD="SC","3333","1233"

+CME ERROR: incorrect password

AT+CPWD="SC","4711","1233"

+CME ERROR: SIM PUK required

AT+CPIN?

Enter an incorrect PIN (first attempt).

Enter an incorrect PIN (second attempt).

Enter an incorrect PIN (third attempt).

Check whether the password is

requested.

+CPIN: SIM PUK

AT+CPIN="12345678","0000"

Enter the SIM PUK and specify the new

SIM PIN (activate new "SC" lock).

Notes:



After PIN authentication is enabled using +CLCK, the module must be restarted for the

change to take effect.



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

7.1.2 Troubleshooting

Possible Error

Information

Scenario

Solution

If PIN authentication has

been enabled, it cannot be

enabled again. Check

whether PIN authentication

has been enabled.

+CME ERROR:

operation not

allowed

Enable PIN authentication.

AT+CLCK="SC",1,"<pwd>"

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Possible Error

Information

Scenario

Solution

Enter the correct PIN. The

original PIN is provided by

the operator.

+CME ERROR:

incorrect password

Incorrect PINs have been

entered three times and the

SIM card is blocked. Run

AT+CPIN="<PUK>","<pwd>

" 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.

Enter the PIN.

AT+CPIN="<pwd>"

+CME ERROR: SIM

PUK required

<oldpwd> 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.

Changes the PIN.

+CME ERROR:

incorrect password

AT+CPWD="SC","<oldpwd

>","<newpwd>"

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,"<record>"

After the command is processed

successfully, the EFiccid file's content

(<record>) is returned.

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,"<record>"

<record> is the content of the first entry.

The length of <record> is 176 bytes.

AT+CRSM=192,12258

Get response of EFiccid.

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+CRSM: 144,0,"<response>"

<response> is the response data of

EFiccid. For details about <response>,

refer to the ETSI TS 102.221 protocol.

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.

AT+CRSM=220,28476,1,4,176,"1111", Update the content of the linear fixed

"7F10"

structure EFsms file on the SIM card.

+CRSM: 144,0,""

Update succeeded.

AT+CRSM=242

Obtain the current directory information.

+CRSM: 108,"<length>","<status>"

<length> indicates <status>’s length in

byte.

<status> indicates the current directory

status by hexadecimal.

Notes:



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 <pathid> 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 +CRSM command is used to read

the EF file.



To use the +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 10.2221 and

3GPP TS 31.102. For detailed requirements, refer to the ETSI TS 102.221 and 3GPP TS

31.102

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7.2.2 Troubleshooting

Possible Error

Information

Scenario

Solution

The status word (SW)

Update the content of the

linear fixed structure EFsms

file on the SIM card.

indicates a Read command

error occurred. Files with a

transparent structure should be

read using 176 (READ

BINARY).

+CRSM: 105,129,""

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

Update the content of the

linear fixed structure EFsms

file on the SIM card.

The PSW indicates that the

security conditions were not

met. To update the EFsms

file, the correct PIN is

required.

+CRSM: 105,130,""

AT+CRSM=220,28476,1,4,

176,"1111","7F10"

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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 HUAWEI Module Android RIL Integration Guide 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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8.1 Hardware Interfaces

The module communicates with the host using mainly USB or UART. For details

about pins related to power management, see ‎T a ble 8-1 .

For corresponding interface numbers and reference design for the pins, see

Hardware Guide for each product.

Table 8-1 Power management related pins

Interface

Pin name

Direction

Functional Description

Diagram

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.

PCIE

WAKE#

Output

‎Figure 8-1

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.

LGA

WAKEUP_OUT

Output

‎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.

The module will be woken up if the

module is in sleep mode.

LGA

WAKEUP_IN

Input

‎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.)

Indicate the state of the module.

When the pin carries a high-level

voltage, the module is in working

mode. When the pin carries a low-

level voltage, the module is in sleep

mode.

LGA

SLEEP_STATUS Output

‎Figure 8-4

Note:

The PCIE interface does not support UART.

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8.2 Sequence Diagram

Figure 8-1 WAKE# PIN output sequence

Figure 8-2 WAKEUP_OUT PIN output sequence

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Figure 8-3 WAKEUP_IN PIN input sequence

About the vote, see section ‎8.3.1 .

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.

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Figure 8-5 Currency state when the module is in sleep mode

T 2 ( S LE E P )

T 1 ( W ak eu p )

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

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-521 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.

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Figure 8-6 Sleep procedure

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.

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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.)

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.

2. 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).

3. Software system events such as a timer

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

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.

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2. 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.

3. 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 F ‎ igure 8-7 .

Figure 8-7 USB resume time sequence

Signaling

Start of

Resume

Signaling

>20ms

<3.0ms

Signaling

D+

D-

FS idle

FSK

HS idle

uSOF

if remote

wake up

Device

Resumed

Start of

Resume

Signaling

Device sees

first activity

<1.33us

3ms

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.

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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 running 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)

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.

AT^CURC=?

Query the parameter range of

CURC.

^CURC: (0-2)

AT^CURC=2,820,1FFFFFFFFFFFFFFF

The host wakes up from sleep if any

of the following occurs: The SIM

card state changes such as the SIM

card is removed (^SIMST); the

number of text messages exceeds

the limit (^SMMEMFULL). Other

unsolicited messages are saved in

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the cache when the host is in sleep

mode, and reported to the host

when it wakes up.

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 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)

AT^WAKEUPCFG=1,1,14

Configure the module to make sure

that text messages, data, and

unsolicited messages can remotely

wake up the host using the

WAKEUP_OUT pin.

AT^CURC=?

^CURC: (0-2)

Query the parameter range of CURC.

AT^CURC=2,820,1FFFFFFFFFFFFFFF

The host wakes up from sleep if

either of the following occurs: The

SIM card state changes, such as the

SIM card is removed (^SIMST); the

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number of text messages exceeds

the limit (^SMMEMFULL). Other

unsolicited messages are saved in

the cache when the host is in sleep

mode, and reported to the host when

it wakes up.

When the host is awake, unsolicited

messages are reported to the host.

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, refer to the HUAWEI

ME909 Series LTE LGA Module Brief 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

AT^CURC=2,0x8000000000,0x8000000000 Enable the thermal protection

unsolicited indication when the

module is working or in sleep

mode.

^THERM: 1

^THERM: 0

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.

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 99°C , the module works normally.



When the module's temperature is higher than 99°C , the module enables

thermal protection: turns off its RF transmission and presents the ^THERM: 1

indication. When the module's temperature is lower than 85°C , the module

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disables thermal protection: turns on its RF transmission, and presents the

^THERM: 0 indication.

Notes:



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

overtemperature. 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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Scenarios

Module Powering Off and Resetting

Application Scenarios

10.1 Restarting the ME

10.1.1 Reference Process

Command

AT+CFUN=1,1

Description

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 Power Off ME

10.2.1 Reference Process

Command

AT^MSO

Description

Power off the module.

After the command is received, the module will only do the preparative work of

power-off such as deregister. The host should cut off the power in order to finish the

power-off operation.

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10.2.2 Troubleshooting

None

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Appendix

11.1 Relative Documents

1. HUAWEI ME909u-521 LTE LGA Module AT Command Interface Specification

2. 3GPP 27.007

3. 3GPP 27.005

AT command set for User Equipment (UE)

Equipment (DTE-DCE) interface for Short Message Service

(SMS) and Cell Broadcast Service (CBS)

4. 3GPP 23.040

5. 3GPP 31.102

6. 3GPP 24.008

Technical realization of the Short Message Service(SMS)

Universal Subscriber Identity Module(USIM) application

Mobile radio interface Layer 3 specification; Core network

protocols; Stage 3

7. 3GPP 29.002

8. 3GPP 22.004

Mobile Application Part (MAP) specification

General on supplementary services

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

characteristics

11.2 Acronyms and Abbreviations

Table 11-1 List of Abbreviations

Acronym or Abbreviation

Expansion

3GPP

APN

Third Generation Partnership Project

Access Point Name

Attention

Circuit Switched (CS) domain

Data Circuit Equipment

Data Terminal Equipment

General Packet Radio Service

Global System for Mobile Communications

DCE

DTE

GPRS

GSM

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Appendix

Acronym or Abbreviation

Expansion

IMEI

International Mobile Equipment Identity

Internet Protocol

LTE

Long Term Evolution

Mobile Equipment

Mobile Station

PDP

PDU

Packet Data Protocol

Protocol Data Unit

Personal Identity Number

Point-to-Point Protocol

PIN Unblocking Key

PPP

PUK

Packet Switched (PS) domain

Quality of Service

QoS

SIM

Subscriber Identity Module

Short Message Service

Terminal Equipment

SMS

User Equipment

UMTS

USIM

WCDMA

Universal Mobile Telecommunications System

Universal Subscriber Identity Module

Wideband CDMA

Table 11-2 Phonebook-related abbreviations

Abbreviation

Full Name

SIM phonebook

SIM emergency number

SIM own numbers

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