TIA-1149-0
CONTENTS
1
FOREWORD .................................................................................................................. vii
2
NOTES ........................................................................................................................... ix
3
REFERENCES ................................................................................................................ ix
4
1 General ..................................................................................................................... 1-1
5
1.1 Terms and Acronyms ........................................................................................... 1-1
6
1.1.1 Terms ............................................................................................................ 1-1
7
1.2 Signaling Architecture .......................................................................................... 1-2
8
2 Functional CMAS Reference Architecture For CDMA ................................................... 2-1
9
3 SMS Broadcast Message For CMAS Application .......................................................... 3-1
10
3.1 Mapping of CMAS Parameters .............................................................................. 3-1
11
3.2 Mapping of CMAS Message Structure to SMS Broadcast Message .......................... 3-3
12
3.3 CMAS Message .................................................................................................... 3-5
13
4 Requirements for Mobile Station CMAS Operation ...................................................... 4-1
14
4.1 Channel............................................................................................................... 4-1
15
4.2 Security ............................................................................................................... 4-1
16
4.3 Duplicate Detection.............................................................................................. 4-1
17
4.4 Mobile Station Message Parsing Requirements ...................................................... 4-1
18
5 Requirements for Base Station CMAS Operation ......................................................... 5-1
19
20
i
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CONTENTS
1
No text.
ii
TIA-1149-0
FIGURES
1
Figure 2-1. CMAS Reference Architecture for CDMA ...................................................... 2-1
2
Figure 3-1. CMAS Message ........................................................................................... 3-4
3
Figure 3-2. CMAS Message Structure ............................................................................ 3-4
4
5
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FIGURES
1
No text.
iv
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TABLES
1
2
Table 3-1. Mapping Reference Point B Elements to Reference Point C and E
Elements ................................................................................................................ 3-1
3
Table 3-2. SMS Broadcast Field mapping ...................................................................... 3-5
4
Table 3-3. E_RECORD_TYPE Encoding ......................................................................... 3-6
5
Table 3-4. CMAE_alert_type Encoding ........................................................................... 3-7
6
Table 3-5. CMAE_category Encoding ............................................................................. 3-7
7
Table 3-6. CMAE_response_type Encoding .................................................................... 3-8
8
Table 3-7. CMAE_severity Encoding .............................................................................. 3-8
9
Table 3-8. CMAE_urgency Encoding .............................................................................. 3-8
10
Table 3-9. CMAE_certainty Encoding ............................................................................ 3-9
11
Table 3-10. CMAE_expires Encoding ........................................................................... 3-10
12
13
v
TIA-1149-0
TABLES
1
No text.
vi
TIA-1149-0
FOREWORD
1
2
3
Editor’s Note: The Foreword should be changed to contain “This specification was prepared
by ….”. The current text here should be moved to Notes section (next section), and some
changes may be needed if chapters change.
4
5
1. General. This section defines the terms and numeric indications used in this
document. This section also describes the general signaling architecture.
6
7
8
9
2. Requirements for Mobile Station CDMA Operation. This section describes the
requirements for CDMA-analog dual-mode mobile stations operating in the CDMA mode. A
mobile station complying with these requirements will be able to operate with CDMA base
stations complying with this document.
10
11
12
13
3. Requirements for Base Station CDMA Operation. This section describes the
requirements for CDMA base stations. A base station complying with these requirements
will be able to operate in the CDMA mode with mobile stations complying with this
document.
14
15
Annex A. CDMA Call Flow Examples.
simple call flows in the CDMA system.
This informative annex provides examples of
16
17
vii
TIA-1149-0
FOREWORD
1
No text.
viii
TIA-1149-0
NOTES
1
1
2
3
4
1.
Compatibility, as used in connection with cdma2000® , is understood to mean: any
cdma2000 mobile station is able to place and receive calls in cdma2000 and IS-95
systems. Conversely, any cdma2000 system is able to place and receive calls for
cdma2000 and IS-95 mobile stations.
5
6
2.
The term “dual-mode mobile station” indicates a mobile station capable of both
analog (FM) and spread spectrum (CDMA) operation.
7
8
3.
This compatibility specification is based upon spectrum allocations that have been
defined by various governmental administrations.
9
10
11
4.
Each mobile station is assigned a single unique 32-bit binary serial number (ESN) or
a single unique 56-bit binary serial number (MEID) that cannot be changed by the
subscriber without rendering the mobile station inoperative.
12
13
5.
“Base station” refers to the functions performed in the fixed network. These
functions typically distributed among cells, sectors, and mobile switching centers.
14
15
16
17
18
19
20
21
22
6.
This standard uses the following verbal forms: “Shall” and “shall not” identify
requirements strictly to be followed in order to conform with the standard and from
which no deviation is permitted. “Should” and “should not” indicate that one of
several possibilities is recommended as particularly suitable, without mentioning or
excluding others; that a certain course of action is preferred but not necessarily
required; or that (in the negative form) a certain possibility or course of action is
discouraged but not prohibited. “May” and “need not” indicate a course of action
permissible within the limits of the standard. “Can” and “cannot” are used for
statements of possibility and capability, whether material, physical, or causal.
23
24
7.
Footnotes appear at various points in this specification to elaborate and further
clarify items discussed in the body of the specification.
25
26
8.
Unless indicated otherwise, this document presents numbers in decimal form.
Binary numbers are distinguished in the text by the use of single quotation marks.
27
9.
The following operators define mathematical operations:
28
 indicates multiplication.
29
x indicates the largest integer less than or equal to x: 1.1 = 1, 1.0 = 1.
30
x indicates the smallest integer greater or equal to x: 1.1 = 2, 2.0 = 2.
31
|x| indicates the absolute value of x: |-17| = 17, |17| = 17.
32
 indicates exclusive OR (modulo-2 addition).
33
min (x, y) indicates the minimum of x and y.
1 “cdma2000® is the trademark for the technical nomenclature for certain specifications and
standards of the Organizational Partners (OPs) of 3GPP2. Geographically (and as of the date of
publication), cdma2000® is a registered trademark of the Telecommunications Industry Association
(TIA-USA) in the United States.”
ix
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NOTES
1
max (x, y) indicates the maximum of x and y.
2
x mod y indicates the remainder after dividing x by y: x mod y = x - (y x/y).
3
x
TIA-1149-0
REFERENCES
1
2
3
4
5
6
The following standards contain provisions which, through reference in this text, constitute
provisions of this Standard. At the time of publication, the editions indicated were valid.
All standards are subject to revision, and parties to agreements based on this Standard are
encouraged to investigate the possibility of applying the most recent editions of the
standards indicated below.
7
8
[1]
TIA-EIA-IS-2000.1, Introduction to cdma2000 Standard for Spread Spectrum
Systems.
9
10
[2]
TIA/EIA/IS-2000.2, Physical Layer Standard for cdma2000 Spread Spectrum
Systems
11
12
[3]
TIA/EIA/IS-2000.3, Medium Access Control (MAC) Standard for cdma2000 Spread
Spectrum Systems
13
14
[4]
TIA/EIA/IS-2000.4, Signaling Link Access Control (LAC) Standard for cdma2000
Spread Spectrum Systems
15
16
[5]
TIA-EIA-IS-2000.5, Upper Layer (Layer 3) Signaling Standard for cdma2000 Spread
Spectrum Systems
17
18
[6]
TIA/EIA/IS-2000.6, Analog Signaling Standard for cdma2000 Spread Spectrum
Systems
19
20
[7]
TIA/EIA-41-D,
December 1997
21
[8]
TIA/EIA-637, Short Message Services for Spread Spectrum Cellular Systems
22
23
24
[9]
Common Cryptographic Algorithms, Revision C, 1997.
An EAR-controlled
document subject to restricted distribution. Contact the Telecommunications
Industry Association, Arlington, VA.
25
26
[10] Interface Specification for Common Cryptographic Algorithms, Rev C, 1997.
Contact the Telecommunications Industry Association, Arlington, VA.
27
28
[11] TIA/EIA/TSB58-I, Administration of Parameter Value Assignments for TIA/EIA
Wideband Spread Spectrum Standards
29
30
[12] Commercial Mobile Alert Service Architecture and Requirements Version 1.0, FCC
Commercial Mobile Service Alert Advisory Committee
31
32
[13] TIA-41-E, Radio Telecommunications Intersystem Operations, Telecommunications
Industry Association
33
34
35
[14] TIA/EIA/IS-824, Generic Broadcast Teleservice Transport Capability - Network
Perspective; Telecommunications Industry Association
Cellular
Radiotelecommunications
xi
Intersystem
Operations,
TIA-1149-0
REFERENCES
1
No text.
xii
General
TIA-1149-0
1
1 GENERAL
2
3
This section defines the terms and numeric indications used in this document. This section
also describes the general signaling architecture.
4
1.1 Terms and Acronyms
5
1.1.1 Terms
6
7
Abbreviated Alert. An abbreviated alert is used to remind the mobile station user that
previously selected alternative routing features are still active.
8
AMBER. America's Missing: Broadcast Emergency Response
9
10
11
Broadcast. The bearer layer mechanism that is used to deliver SMS messages on the
Paging Channel, Primary Broadcast Control Channel, or on the Forward Traffic Channel to
all available mobile stations.
12
13
Broadcast Messaging Service. A teleservice that allows an SMS message to be sent to all
mobile stations.
14
CAP. Common Alerting Protocol as defined in CAP version 1.1 Specification
15
CDMA. Code Division Multiple Access
16
CMA. Commercial Mobile Alert
17
CMAM. Commercial Mobile Alert Message
18
CMAS. Commercial Mobile Alert Service
19
CMSAAC. Commercial Mobile Service Alert Advisory Group
20
CMSP. Commercial Mobile Service Provider
21
CTIA. Cellular Telecommunications Industry Association
22
EOC. Emergency Operations Center
23
FIPS. Federal Information Processing Standards
24
GNIS. Geographic Names Information System
25
NOAA. National Oceanic and Atmospheric Administration
26
MVNO. Mobile Virtual Network Operator
27
28
29
30
Network. A network is a subset of a wireless system, such as an area-wide cellular
network, a private group of base stations, or a group of base stations set up to handle a
special requirement. A network can be as small or as large as needed, as long as it is fully
contained within a system. See also System.
31
NIST. National Institute of Standards and Technology
32
NWS. National Weather Service
33
SMS. Short Message Service
34
UMTS. Universal Mobile Telecommunications System
1-1
TIA-1149-0
General
1
WARN. Warning, Alert, and Response Network
2
1.2 Signaling Architecture
3
4
See [1] through [6] for the Signaling Architecture.
1-2
General
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1-3
Functional CMAS Reference Architecture For CDMA
TIA-1149-0
1
2 FUNCTIONAL CMAS REFERENCE ARCHITECTURE FOR CDMA
2
3
4
5
6
Figure 2-1 presents the network entities and associated reference points that comprise the
CMAS Reference Architecture for CDMA. The applicable network entities are represented
by squares. The applicable reference points of the CDMA wireless network reference model
are represented by circles and are defined in the TIA Wireless Network Reference Model2 .
The ‘C’ and ‘E’ reference points are defined in [12].
7
8
9
10
11
12
The reference architecture, as defined herein, is intended to provide a level of abstraction
that may facilitate the specification of messages and protocols within.
As such,
implementations may vary with respect to how the functional entities are distributed among
various physical units. In cases where functional entities are combined in the same
physical equipment the reference points become internal, and need not adhere to interface
standards.
13
Alert
Gateway
C
E
CMSP
Gateway
M1
MC
Q
MSC
Um
14
15
Figure 2-1. CMAS Reference Architecture for CDMA
16
2 TIA-100- A-1[E], Wireless Reference Network Model; 2006.
2-1
MS
TIA-1149-0
1
Functional CMAS Reference Architecture For CDMA
No text.
2-2
SMS Broadcast Message For CMAS Application
TIA-1149-0
1
3 SMS BROADCAST MESSAGE FOR CMAS APPLICATION
2
3.1 Mapping of CMAS Parameters
3
4
5
Table 3-1 defines the mapping of the CMAM elements from the B interface (CAP) to the C
(CMAC)
and
E
(CMAE)
interfaces.
It
also includes
the
mapping
to
parameters/subparameters/fields of SMS Broadcast Message.
6
7
8
The definitions of the CAP Elements and the CMAC Elements are contained in the joint
ATIS/TIA standard. CMAE Elements are defined in technology specific standards (i.e.,
cdma).
9
10
Table 3-1. Mapping Reference Point B Elements to Reference Point C and E Elements
CAP
CMAC Element
CMAE Element
N/A
CMAC_protocol_version
N/A
N/A
N/A
CMAE_protocol_version
N/A
CMAC_sending_alert_gateway_id
N/A
Identifier
CMAC_message_identifier
CMAE_identifier
References
CMAC_referenced_message_ident
ifier
N/A
N/A
CMAC_special_handling
CMAE_alert_handling
Sender
CMAC_sender
N/A
Sent
CMAC_sent_date_time
N/A
Status
CMAC_status
N/A
msgType
CMAC_message_type
CMAE_alert_type
Source
N/A
N/A
Scope
N/A
N/A
Restriction
N/A
N/A
code
N/A
N/A
note
CMAC_ note
N/A
incidents
N/A
N/A
3-1
IS-637 Parameter
of SMS Broadcast
Message
See 3.3
MESSAGE_ID
field of the
"Message
Identifier"
subparameter
CATEGORY field
of the "Service
Category"
parameter
See 3.3
TIA-1149-0
SMS Broadcast Message For CMAS Application
CAP
CMAC Element
CMAE Element
IS-637 Parameter
of SMS Broadcast
Message
N/A
CMAC_original_cap_alert_uri
N/A
category
CMAC_category
CMAE_category
event
N/A
N/A
eventCode
CMAC_event_code
N/A
responseType
CMAC_response_type
CMAE_response_type
See 3.3
severity
CMAC_severity
CMAE_severity
See 3.3
urgency
CMAC_urgency
CMAE_urgency
See 3.3
certainty
CMAC_certainty
CMAE_certainty
See 3.3
audience
N/A
N/A
effective
N/A
N/A
onset
N/A
N/A
expires
CMAC_expires_date_time
CMAE_expires
senderName
CMAC_sender_name
N/A
language
CMAC_text_language
CMAE_language
See 3.3
See 3.3
LANGUAGE field
of broadcast
address (if
included)
LANGUAGE field
of Language
Indicator
subparameter (if
included)
N/A
CMAC_text_encoding
CMAE_char_set
MSG_ENCODING
field of User Data
subparameter
N/A
CMAC_text_alert_message_length
CMAE_alert_text_length
See 3.3
parameter
(when value =
“CMAMtext”)
CMAC_text_alert_message
CMAE_alert_text
See 3.3
headline
N/A
N/A
description
N/A
N/A
instruction
N/A
N/A
web
CMAC_web_link
N/A
contact
N/A
N/A
3-2
SMS Broadcast Message For CMAS Application
TIA-1149-0
CAP
CMAC Element
CMAE Element
IS-637 Parameter
of SMS Broadcast
Message
parameter
(when value
not =
“CMAMtext”)
N/A
N/A
areaDesc
CMAC_area_description
N/A
polygon
CMAC_polygon
N/A
circle
CMAC_circle
N/A
geocode
CMAC_cmas_geocode
N/A
geocode
CMSC_gnis
N/A
altitude
N/A
N/A
ceiling
N/A
N/A
resourceDesc
CMAC_resource_description
N/A
mimeType
CMAC_mime_type
N/A
size
CMAC_resource_size
N/A
uri
CMAC_resource_uri
N/A
derefUri
N/A
N/A
digest
CMAC_digest
N/A
N/A
N/A
CMAE_associated_multi
media_indicator
See 3.3
N/A
N/A
CMAE_CMSP_defined_p
arameter
See 3.3
N/A
N/A
CMAE_reserved
See 3.3
1
2
3.2 Mapping of CMAS Message Structure to SMS Broadcast Message
3
4
5
New ‘Service Category’ values will be defined for CMAS. The structure is defined to carry EInterface parameters in the CHARi field of the ‘User Data” sub-parameter (see Figure 3-1
and Figure 3-2). Refer to [8] for details of SMS Broadcast message.
3-3
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SMS Broadcast Message For CMAS Application
CMAS Message
CHARi fields of “User Data” subparameter
1
2
Figure 3-1. CMAS Message
CMAE_protocol_version
E_RECORD_TYPE
E_RECORD_LEN
Type-specific fields
.
.
E_RECORD_TYPE
E_RECORD_LEN
Type-specific fields
3
4
Figure 3-2. CMAS Message Structure
5
6
7
8
Editor’s Note: Need to include base station requirement to include Langauge information in
one of the 3 possible places: LANGUAGE field of broadcast address, LANGUAGE field of
Language Indicator subparameter, or E_RECORD_TYPE 0x02.
9
10
If Commercial Mobile Alert Message (CMAM) is to be sent using SMS Broadcast message,
the base station shall conform to the following requirements:
11
12
13

If broadcast address is included, the base station shall set the PRIORITY field to ‘11’
(Emergency). If Priority Indicator subparameter is included, the base station shall set
the PRIORITY field to ‘11’ (Emergency).
14
15

The base station shall set various SMS Broadcast message fields using values of Einterface parameters as indicated in Table 3-2:
16
3-4
SMS Broadcast Message For CMAS Application
1
TIA-1149-0
Table 3-2. SMS Broadcast Field mapping
SMS Broadcast Message Field
2
3
E-interface parameter
MESSAGE_ID field of the "Message Identifier"
subparameter
CMAE_identifier
CATEGORY field of the "Service Category" parameter
CMAE_alert_handling
SERVICE field of broadcast address (if broadcast
address is included)
CMAE_alert_handling
LANGUAGE field of broadcast address (if broadcast
address is included)
CMAE_language
MSG_ENCODING field of User Data subparameter
(see Note 1)
CMAE_char_set
CHARi fields of User Data subparameter
CMAS Message as defined in 3.3
LANGUAGE field of Language Indicator subparameter
(if included)
CMAE_language
Note 1: MSG_ENCODING field of User Data subparameter indicates encoding of Typespecific fields of E-RECORD with E_RECORD_TYPE set to 0x00 (see 3.3).
4
5
6
7

8
9
3.3 CMAS Message
The base station shall include E-RECORD with E_RECORD_TYPE set to 0x00 in CMAS
Message. The base station may optionally include E-RECORDs with E_RECORD_TYPE
set to values other than 0x00.
Field
Length (bits)
CMAE_protocol_version
8
The CMAS message shall include one or more
occurrences of the following three-field record:
E_RECORD_TYPE
8
E_RECORD_LEN
8
Type-specific fields
8 E_RECORD_LEN
10
11
CMAE_protocol_version
CMAE Protocol Version.
The base station shall set this field to 0x00.
12
13
E_RECORD_TYPE
E Interface Information record type.
The base station shall set this field as specified in Table 3-3.
3-5
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SMS Broadcast Message For CMAS Application
1
Table 3-3. E_RECORD_TYPE Encoding
E_RECORD_TYPE
Meaning
0x00
Type 0 Parameters (Alert Text)
0x01
Type 1 Parameters
0x02
Type 2 Parameters
0x03
Type 3 Parameters
All other values
Reserved
2
3
4
E_RECORD_LEN
Information record length.
The base station shall set this field to the number of octets in
the type-specific fields included in this record.
5
6
7
Type-specific fields
Type-specific fields.
The base station shall include type-specific fields as specified
below.
8
9
10
If E_RECORD_TYPE is 0x00, the type-specific fields are set as follows:
Element
CMAE_alert_text
11
12
13
14
CMAE_alert_text
Function
Length
Contains the alert text in the language
and character set encoding specified in
the CMAE_language and
CMAE_char_set elements
E_RECORD_LEN
E Interface alert text parameter.
The base station shall set this field to alert text in the
language and character set encoding specified in the
CMAE_language and CMAE_char_set elements.
15
16
17
If E_RECORD_TYPE is 0x01, the type-specific fields are set as follows:
3-6
SMS Broadcast Message For CMAS Application
Element
TIA-1149-0
Function
Length
CMAE_category
Identifies the category of the CMAS
alert
8
CMAE_response_type
Identifies the response indicated for the
CMAS alert
8
CMAE_severity
Identifies the severity of the CMAS alert
4
CMAE_urgency
Identifies the urgency of the CMAS alert
4
CMAE_certainty
Identifies the certainty of the CMAS
alert
4
RESERVED
Reserved bits
0-7
1
2
3
CMAE_category
4
E Interface category parameter.
The base station shall set this field as specified in Table 3-4.
Table 3-4. CMAE_category Encoding
CMAE_category
Meaning
0x00
Geo (Geophysical including landslide)
0x01
Met (Meteorological including flood)
0x02
Safety (General emergency and public safety)
0x03
Security (Law enforcement, military, homeland and
local/private security)
0x04
Rescue (Rescue and recovery)
0x05
Fire (Fire suppression and rescue)
0x06
Health (Medical and public health)
0x07
Env (Pollution and other environmental)
0x08
Transport (Public and private transportation)
0x09
Infra (Utility, telecommunication, other nontransport infrastructure)
0x0a
CBRNE (Chemical, Biological, Radiological, Nuclear
or High-Yield Explosive threat or attack)
0x0b
Other (Other events)
All other values
Reserved
5
6
7
CMAE_response_type
E Interface response type parameter.
The base station shall set this field as specified in Table 3-5.
3-7
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1
SMS Broadcast Message For CMAS Application
Table 3-5. CMAE_response_type Encoding
CMAE_response_type
2
3
Meaning
0x00
Shelter (Take shelter in place)
0x01
Evacuate (Relocate)
0x02
Prepare (Make preparations)
0x03
Execute (Execute a pre-planned activity)
0x04
Monitor (Attend to information sources)
0x05
Assess (Evaluate the information in this
message. This value SHOULD NOT be used in
public warning applications.)
0x06
None (No action recommended)
All other values
Reserved
CMAE_severity
E Interface severity parameter.
The base station shall set this field as specified in Table 3-6.
4
Table 3-6. CMAE_severity Encoding
CMAE_severity
5
6
Meaning
0x0
Extreme (Extraordinary threat to life or property)
0x1
Severe (Significant threat to life or property)
All other values
Reserved
CMAE_urgency
7
E Interface urgency parameter.
The base station shall set this field as specified in Table 3-7.
Table 3-7. CMAE_urgency Encoding
CMAE_urgency
8
9
Meaning
0x0
Immediate (Responsive action should be taken immediately)
0x1
Expected (Responsive action should be taken soon - within
the next hour)
All other values
Reserved
CMAE_certainty
E Interface certainty parameter.
The base station shall set this field as specified in Table 3-8.
3-8
SMS Broadcast Message For CMAS Application
1
Table 3-8. CMAE_certainty Encoding
CMAE_certainty
2
3
4
5
TIA-1149-0
Meaning
0x0
Observed (Determined to have occurred or to be ongoing)
0x1
Likely (Likely. Probability > ~50%)
All other values
Reserved
RESERVED
Reserved Bits.
The base station shall add reserved bits to make the length of
this record an integer number of octets. The base station shall
set these bits to zero.
6
7
8
If E_RECORD_TYPE is 0x02, the type-specific fields are set as follows:
Element
Function
Length
CMAE_identifier
A number uniquely identifying this
message
16
CMAE_alert_handling
Specifies if this alert message requires
special handling.
8
CMAE_expires
Identifies the expiration date and time
of the CMAS alert
48
CMAE_language
Identifies the language of the alert
message in the CMAE_Alert_Text
parameter
8
CMAE_char_set
Identifies the character set for the alert
text in the CMAE_Alert_Text parameter
(see Table 9.1-1 of [11])
5
RESERVED
Reserved bits
0-7
9
10
11
CMAE_identifier
E Interface identifier parameter.
The base station shall set this field to a number uniquely
identifying this message.
12
13
14
15
CMAE_alert_handling
E Interface alert handling parameter.
The base station shall set this field to 8 LSBs of appropriate
‘Service Category’ specified under ‘CMAS Broadcast Service
Category Assignments’ in [11].
16
17
18
19
CMAE_expires
E Interface expires parameter.
The base station shall set the time in this subparameter to
UTC time. The base station shall set this field as specified in
Table 3-9.
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Table 3-9. CMAE_expires Encoding
Subfield
Length (bits)
Subfield Description
YEAR
8
Year in range 00-99 (UTC)
MONTH
8
Month in range 1-12 (UTC)
DAY
8
Day in range 1 to 31 (UTC)
HOURS
8
Hour in range 0-23 (UTC)
MINUTES
8
Minutes in range 0-59 (UTC)
SECONDS
8
Seconds in range 0-59 (UTC)
2
3
4
5
CMAE_language
E Interface language parameter.
The base station shall set this field to appropriate ‘Language’
specified under ‘Language Indicator Value Assignments’ in
[11].
6
7
8
9
CMAE_char_set
E Interface character set parameter.
The base station shall set this field to appropriate
‘MSG_ENCODING Field’ specified under ‘Data Field Encoding
Assignments’ in [11].
RESERVED
Reserved Bits.
The base station shall add reserved bits to make the length of
this record an integer number of octets. The base station shall
set these bits to zero.
10
11
12
13
14
15
16
If E_RECORD_TYPE is 0x03, the type-specific fields are set as follows3:
Element
Function
CMAE_associated_multimedia_indicator
An indicator that there is
multimedia content available
for this CMAM
CMAE_CMSP_defined_parameter
CMAE_reserved
Length
8
TBD
RESERVED
17
18
3 Are these optional parameters needed? Hold as a place holder for now.
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4 REQUIREMENTS FOR MOBILE STATION CMAS OPERATION
2
3
This section defines requirements that are specific to CDMA mobile station equipment and
operation.
4
4.1 Channel
5
6
The mobile station monitors the Paging Channel or Broadcast Control Channel to receive a
Commercial Mobile Alert Message (CMAM) as specified in [5].
7
4.2 Security
8
9
10
The CMSAAC recommends that the security of the Reference points D and E be based upon
CMSP policies and upon the capabilities of the CMSP selected delivery technologies.
Security is addressed in [5].
11
4.3 Duplicate Detection
12
13
If the mobile station determines that the received CMAM is a duplicate of previously
received CMAM based upon CMAE_identifier , the mobile station shall discard the CMAM.
14
4.4 Mobile Station Message Parsing Requirements
15
16
This section defines the parsing requirement for the mobile station upon receiving the
Commercial Mobile Alert System message.
17
18

If the mobile station receives a CMAE_protocol_version that it does not support, the
mobile station shall ignore the message.
19
20
21

If the mobile station receives the Commercial Mobile Alert System message with a
known CMAE_protocol_version but with an unknown record, the mobile station shall
ignore that record and process the remaining records.
22
23
24

If the mobile station recognizes extra bits at the end of a record, the mobile station shall
ignore these extra bits.
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Requirements for Base Station CMAS Operation
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5 REQUIREMENTS FOR BASE STATION CMAS OPERATION
2
3
This section defines requirements that are specific to CMAS base station equipment and
operation.
4
5
6
The base station may use the message identifier field to distinguish different messages from
the same broadcast service transmitted within the time period established for broadcast
duplicate detection in the mobile station (see [4]).
7
8
9
If the same message is re-transmitted, the base station should use the same value for the
CMAE_Identifier when the message is retransmitted.
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