Section: – SIB9
Content: SIB9 contains information related to GPS time and Coordinated Universal Time (UTC). The UE may use the parameters provided in this system information block to obtain the UTC, the GPS and the local time. NOTE: The UE may use the time information for numerous purposes, possibly involving upper layers e.g. to assist GPS initialisation, to synchronise the UE clock. SIB9 information element -- ASN1START -- TAG-SIB9-START SIB9 ::= SEQUENCE { timeInfo SEQUENCE { timeInfoUTC INTEGER (0..549755813887), dayLightSavingTime BIT STRING (SIZE (2)) OPTIONAL, -- Need R leapSeconds INTEGER (-127..128) OPTIONAL, -- Need R localTimeOffset INTEGER (-63..64) OPTIONAL -- Need R } OPTIONAL, -- Need R lateNonCriticalExtension OCTET STRING OPTIONAL, ..., [[ referenceTimeInfo-r16 ReferenceTimeInfo-r16 OPTIONAL -- Need R ]], [[ eventID-TSS-r18 INTEGER (0..63) OPTIONAL -- Need R ]] } -- TAG-SIB9-STOP -- ASN1STOP NOTE 1: The UE may use this field together with the leapSeconds field to obtain GPS time as follows: GPS Time (in seconds) = timeInfoUTC (in seconds) - 2,524,953,600 (seconds) + leapSeconds, where 2,524,953,600 is the number of seconds between 00:00:00 on Gregorian calendar date 1 January, 1900 and 00:00:00 on Gregorian calendar date 6 January, 1980 (start of GPS time).