Tech-invite3GPPspecsSIPRFCs
Overview21222324252627282931323334353637384‑5x

Content for  TS 23.041  Word version:  17.0.0

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9.4.2  UMTS

The CBS messages which are transmitted by the RNS to the UE include two types of messages: CBS Message (user information) and Schedule Message (schedule of CBS messages).
The format of the CBS Message containing user information is described in this clause and in TS 25.324.
The format of the Schedule Message is described in TS 25.324.

9.4.2.1  General Description

The CBS message is transmitted as one unit over the radio interface. On layer two of the UMTS radio interface the logical channel CTCH is used.

9.4.2.2  Message Parameter

Octet Number(s) Parameter
1Message Type
2 - 3Message ID
4 - 5Serial Number
6Data Coding Scheme
7 - NCB Data
The octets in the above table are transmitted in order, starting with octet 1. The bits within these octets are numbered 0 to 7; bit 0 is the low order bit and is transmitted first.
For ETWS, the transmission order of the parameter is only applicable to the secondary notification.
For value N in the above table see TS 25.324.
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9.4.2.2.1  Message Type
This parameter indicates the type of a message, either a CBS message or a Schedule Message. The Coding of the Message Type is described in TS 25.324.
9.4.2.2.2  Message ID
This parameter identifies the source and type of the CBS Message (see also TS 25.324). It is identical with the Message Identifier described in subclause 9.4.1.2.2 with respect to its structure and possible value range. Within a multi technology network of one operator, e.g. GSM combined with UMTS, the values identifying a given topic shall be identical for both the Message ID and the Message Identifier described in subclause 9.4.1.2.2.
The UE shall attempt to receive the CBS messages whose Message ID's are in the "search list". This "search list" shall contain the Message IDs stored in the EFCBMI, EFCBMID and EFCBMIR files on the USIM (see TS 31.102) and any Message Identifiers stored in the UE in a "list of CBS messages to be received". If the UE has restricted capabilities with respect to the number of Message ID's it can search for, the IDs stored in the USIM shall take priority over any stored in the UE.
The MS shall discard a CBS message in Message Identifier value range "A000hex-AFFFhex" unless it is received from:
  • HPLMN;
  • EHPLMN; or
  • PLMN that is equivalent to either HPLMN or EHPLMN.
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9.4.2.2.3  Serial NumberWord‑p. 83
This parameter identifies a particular CBS Message from the source and type indicated by the Message ID (see also TS 25.324). It is identical with the Serial Number described in subclause 9.4.1.2.1 with respect to its structure and possible value range.
9.4.2.2.4  Data Coding Scheme
This parameter identifies the the alphabet/coding and the language applied to a CBS Message as defined in TS 23.038.
When the USIM indicates one or more language preferences, the UE shall, by default, use the language(s) stored in the USIM (in the EFPL file) to set any language filter mechanisms provided by the UE.
Optionally, when allowed by language code processing specified below, the user can select the language(s) required by using an MMI, to determine whether a particular CBS message should be displayed.
Where the message relates to a public warning system, the Message Identifier values 4370 through 4382, 4396 and 4398, relate to warning messages delivered in languages which are mandatory to receive. The ME shall not use any language filter mechanisms or use the language(s) selected through the MMI to determine whether a particular CBS message should be displayed for these Message Identifier values. This does not affect the ability to set a particular message identifier by MMI.
Where the message relates to a public warning system, the Message Identifier values 4383 through 4395, 4397 and 4399, relate to warning messages delivered in languages which are optional to receive. For these values, the ME can use language filter mechanisms and the MS/UE may use the language(s) selected through the MMI to determine whether a particular CBS message should be displayed. Even if the Message Identifier is not settable by MMI, the message shall still be discarded if the language is filtered or is not set to be displayed.
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9.4.2.2.5  CB Data
This parameter consists of the following WRITE-REPLACE primitive parameters as received from the CBC (see subclause 9.2.2):
  • Number-of-Pages;
  • CBS Message Information Page;
  • CBS-Message-Information-Length.
Octet Number(s) Parameter
1Number-of-Pages
2 - 83CBS Message Information Page 1
84CBS-Message-Information-Length 1

CBS Message Information Page n
CBS-Message-Information-Length n
The octets in the above table are transmitted in order, starting with octet 1. The bits within these octets are numbered 0 to 7; bit 0 is the low order bit and is transmitted first.
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9.4.3  E-UTRAN |R12|Word‑p. 84

9.4.3.1  General Description

The warning message may be segmented within E-UTRAN for transmission over radio interface.

9.4.3.2  Message Parameter

Parameter
Message Identifier
Serial Number
CB Data {Warning Message Content E-UTRAN},
Data Coding Scheme
Warning Area Coordinates (O)
The table gives a high-level description of the warning message content. The format of the warning message is described in TS 36.331.
For ETWS, the description of the warning message content is only applicable for the secondary notification. Description of the ETWS Primary Notification message is specified in subclause 9.4.3.3.
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9.4.3.2.1  Message Identifier
This parameter identifies the source and type of the warning message. The contents of the parameter are specified in subclause 9.4.1.2.2 with respect to its structure and possible value range.
9.4.3.2.2  Serial Number
This parameter identifies a particular warning message from the source and type indicated by the Message Identifier. The contents of the parameter are specified in subclause 9.4.1.2.1 with respect to its structure and possible value range.
9.4.3.2.3  Data Coding Scheme
This parameter identifies the alphabet/coding and the language applied to the warning message as defined in TS 23.038. The contents of the parameter are specified in subclause 9.4.2.2.4 with respect to its structure and possible value range.
9.4.3.2.4  CB Data
This parameter contains the content of the warning message and is contained in the Warning Message Content E-UTRAN IE (see subclause 9.3.35) of the WRITE-REPLACE-WARNING-REQUEST Request message received from the CBC (see subclause 9.2.16). It is encoded as specified in subclause 9.4.2.2.5.
9.4.3.2.5  Warning Area Coordinates |R15|
This parameter contains the coordinates of the warning area and is contained in the Warning Area Coordinates IE (see subclause 9.3.63) of the WRITE-REPLACE-WARNING-REQUEST Request message received from the CBC (see subclause 9.2.16) or WRITE-REPLACE-WARNING-REQUEST-NG-RAN request message received from the CBCF (see subclause 9.2.26).
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9.4.3.3  ETWS Primary Notification message |R13|

9.4.3.3.1  General Description
The ETWS Primary Notification message for E-UTRAN radio interface is described in TS 36.331. The ETWS Primary Notification message is structured as in the table in subclause 9.4.3.3.2.
9.4.3.3.2  Message ParameterWord‑p. 85
Octet Number(s) Parameter
1-2Message Identifier
3-4Serial Number
5-6Warning Type
7-56dummy
The octets in the above table are transmitted in order, starting with octet 1. The bits within these octets are numbered 0 to 7; bit 0 is the low order bit and is transmitted first.
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9.4.3.3.3  Message Identifier
This parameter identifies the source and type of the ETWS Primary Notification message. The contents of the parameter are specified in subclause 9.4.1.2.2 with respect to its structure and possible value range.
9.4.3.3.4  Serial Number
This parameter identifies a particular ETWS Primary Notification message from the source and type indicated by the Message Identifier and is altered every time the ETWS Primary Notification message with a given Message Identifier is changed. The contents of the parameter are specified in subclause 9.4.1.2.1 with respect to its structure and possible value range.
9.4.3.3.5  Warning Type
This parameter identifies the warning type of the ETWS Primary Notification message. It is identical with the Warning Type described in subclause 9.3.24 with respect to its structure and possible value range.
9.4.3.3.6  Dummy
This parameter is not used in the specification. The UE shall ignore this parameter.

9.4.4  NG-RAN |R14|

The format of the CBS Message for NG-RAN is same as format of the CBS Message defined for E-UTRAN as described in subclause 9.4.3.2 and TS 36.331.
The format of the ETWS Primary Notification message is same as format of the ETWS Primary Notification message defined for E-UTRAN as described in subclause 9.4.3.3 and TS 36.331.
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