4G/LTE - PWS/CBS |
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PWS Message Identifier
Message Identifier is an indicator showing the type of PWS message. It tells on 'Is this ETWS message ? or CMAS ?' or 'How urgent/server it is' etc. SIB messages carrying the PWS message has specific IE called 'messageIdentifier' as shown below to specify this identifier.
BCCH-DL-SCH-Message ::= SEQUENCE +-message ::= CHOICE [c1] +-c1 ::= CHOICE [systemInformation] +-systemInformation ::= SEQUENCE +-criticalExtensions ::= CHOICE [systemInformation-r8] +-systemInformation-r8 ::= SEQUENCE [0] +-sib-TypeAndInfo ::= SEQUENCE OF SIZE(1..maxSIB[32]) [1] | +- ::= CHOICE [sib12-v920] | +-sib12-v920 ::= SEQUENCE [10] | +-messageIdentifier-r9 ::= BIT STRING SIZE(16) [0001000100010010] | +-serialNumber-r9 ::= BIT STRING SIZE(16) [0011000000000000] | +-warningMessageSegmentType-r9 ::= ENUMERATED [lastSegment] | +-warningMessageSegmentNumber-r9 ::= INTEGER (0..63) [0] | +-warningMessageSegment-r9 ::= OCTET STRING SIZE(ALIGNED) [01C576597E2EBBC7F950A8D168341A8D46A3D168341 A8D46A3D168341A8D46A3D168341A8D46A3D168341A 8D46A3D168341A8D46A3D168341A8D46A3D168341A8 D46A3D168341A8D46A3D168341A8D46A3D1000A] | +-dataCodingScheme-r9 ::= OCTET STRING SIZE(1) [01] OPTIONAL:Exist | +-lateNonCriticalExtension ::= OCTET STRING OPTIONAL:Omit | +-EXTENSION ::= SEQUENCE +-nonCriticalExtension ::= SEQUENCE OPTIONAL:Omit
< Based on 23.041-9.4.1.2.2 Message Identifier >
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