7.7.52 MS Time Zone
29.0603GPPGeneral Packet Radio Service (GPRS)GPRS Tunnelling Protocol (GTP) across the Gn and Gp interfaceRelease 17TS
The " MS Time Zone" IE is used to indicate the offset between universal time and local time in steps of 15 minutes of where the MS currently resides. The "Time Zone" field uses the same format as the "Time Zone" IE in 3GPP TS 24.008 [5].
MS Time Zone is coded as depicted in Figure 7.7.52.1. The value of the Time Zone field represents the time zone adjusted for daylight saving time. The value of the Daylight Saving Time field specifies the adjustment that has been made.
Bits marked as Spare shall be assigned the value 0 by the sending node and shall not be evaluated by the receiving node.
|
Bits |
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|
Octets |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
||
|
1 |
Type = 153 (Decimal) |
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|
2-3 |
Length = 2 |
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|
4 |
Time Zone |
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|
5 |
Spare |
Spare |
Spare |
Spare |
Spare |
Spare |
Daylight Saving Time |
|||
Figure 7.7.52.1: MS Time Zone IE
Table 7.7.52A Possible values for the "Daylight Saving Time" field and their meanings.
|
Daylight Saving Time |
Value (binary) |
|
|
Bit 2 |
Bit 1 |
|
|
No adjustment for Daylight Saving Time |
0 |
0 |
|
+1 hour adjustment for Daylight Saving Time |
0 |
1 |
|
+2 hours adjustment for Daylight Saving Time |
1 |
0 |
|
Reserved |
1 |
1 |