4.2.104 EFePDGSelection (ePDG Selection Information)
31.1023GPPCharacteristics of the Universal Subscriber Identity Module (USIM) applicationRelease 17TS
If service n°106 and service n°107 are "available", this file shall be present.
This EF contains Evolved Packet Data Gateway (ePDG) selection information for one or more PLMNs as defined in the "Selection of the ePDG" UE procedure of 3GPP TS 24.302 [79].
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Identifier: ‘6FF4’ |
Structure: transparent |
Optional |
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File size: Z bytes |
Update activity: low |
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Access Conditions: READ PIN UPDATE ADM DEACTIVATE ADM ACTIVATE ADM |
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Bytes |
Description |
M/O |
Length |
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1 to Z |
ePDG selection information TLV data object |
O |
Z bytes |
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The file contains one ePDG selection information TLV data object. The ePDG selection information TLV data object contains a list of PLMNs which are preferred for ePDG selection. The list of PLMNs may include the HPLMN. For each PLMN, it is indicated:
– the preference order (priority) given to ePDG of a PLMN and
– whether selection of an ePDG in such PLMN should be based on Tracking/Location Area Identity FQDN or on Operator Identifier FQDN,
as specified in the "Selection of the ePDG" UE procedure of 3GPP TS 24.302 [79].
ePDG selection information TLV data object:
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Description |
Value |
M/O/C |
Length (bytes) |
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ePDG Selection Information Tag |
’80’ |
M |
1 |
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Length |
5n |
M |
Note |
|
PLMN 1 |
— |
C |
3 |
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ePDG Priority |
— |
C |
2 |
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ePDG FQDN format |
’00’ or ’01’ |
C |
1 |
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… |
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PLMN n |
— |
C |
3 |
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ePDG Priority |
— |
C |
2 |
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ePDG FQDN format indicator |
’00’ or ’01’ |
C |
1 |
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Note: The length is coded according to ISO/IEC 8825-1 [35] |
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PLMN:
Contents:
– Mobile Country Code (MCC) followed by the Mobile Network Code (MNC).
Coding:
– According to TS 24.008 [9].
– A BCD value of ‘D’ in any of the MCC and/or MNC digits shall be used to indicate a "wild" value for that corresponding MCC/MNC digit.
– A value of ‘DDDDDD’ represents "any PLMN" value.
ePDG Priority:
Contents:
– The PLMN Priority represents the preference order given to ePDGs of a PLMN.
Coding:
– ePDG Priority value is coded as a 2-Byte integer.
ePDG FQDN format:
Contents:
– Indicates whether the selection of an ePDG in this PLMN should be based on Tracking/Location Area Identity FQDN or on Operator Identifier FQDN (see 3GPP TS 24.302 [79]).
Coding:
– ’00’: Indicates that Operator Identifier FQDN format shall be used (see 3GPP TS 24.302 [79]).
– ’01’: Indicates that location based FQDN format shall be used (see 3GPP TS 24.302 [79]).
– Other values are RFU.