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Content for  TS 23.008  Word version:  16.3.0

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2  Definition of subscriber data for CS and PS domainWord‑p. 23

2.1  Data related to subscription, identification and numbering

2.1.1  Data defining the subscription profile

2.1.1.1  International Mobile Subscriber Identity (IMSI)

International Mobile Subscriber Identity (IMSI) is defined in TS 23.003.
IMSI is permanent subscriber data. IMSI is stored in HLR, HSS, CSS, VLR, SGSN, S4-SGSN, GGSN, MME, S-GW, P-GW, ePDG, SCEF and SMLC. For Anonymous Access, IMSI is not used in SGSN nor in GGSN. The IMSI serves as the root of the subscriber data pseudo-tree.
For emergency attached UEs without IMSI (e.g; UICCless UE) or with an unauthenticated IMSI, IMEI is used instead of IMSI to identify the UE.
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2.1.1.2  Network Access Mode (NAM)

The Network Access Mode (NAM) defines if the subscriber is registered to get access to the CS domain (non-GPRS/EPS), to the PS domain (GPRS/EPS) or to both domains using 3GPP access networks. NAM describes the first level of the subscriber data pseudo-tree below the IMSI root. It is permanent subscriber data stored in the HSS/HLR and the SGSN with the Gs interface option, and the MME with the SGs interface option.

2.1.1.3  IMSI Unauthenticated indicator |R9|

For an emergency attached UE with an unauthenticated IMSI, the IMSI Unauthenticated indicator is set to reflect that the IMSI is unauthenticated. See TS 23.401, TS 23.060 and TS 23.402.
The IMSI Unauthenticated indicator is a temporary subscriber data stored in the MME, S-GW, P-GW, SGSN, S4-SGSN, GGSN and ePDG.

2.1.2  Mobile Station International ISDN Number (MSISDN)

Mobile Station ISDN Number (MSISDN) is defined in TS 23.003.
The MSISDN is permanent subscriber data and is conditionally stored in HLR, VLR, SGSN, GGSN, HSS, MME, S-GW, P-GW, SCEF, 3GPP AAA Server and ePDG(for GTP-based S2b only), and is optionally stored in CSS. If the multinumbering option applies, the MSISDN stored in the VLR and in the Gn/Gp-SGSN is the Basic MSISDN, see clause 2.1.3.1.
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2.1.3  MSISDNs for multinumbering option

If the HPLMN allocates different MSISDNs for different Basic Services (see TS 29.007), these numbers are conditionally stored as permanent data in the HLR.

2.1.3.1  The Basic MSISDN indicator

The Basic MSISDN is defined in TS 23.012. The Basic MSISDN indicator marks the MSISDN to be used as Basic MSISDN.
It is permanent subscriber data stored conditionally in the HLR.

2.1.3.2  The MSISDN-Alert indicatorWord‑p. 24
The MSISDN-Alert is defined in TS 23.040. The MSISDN-Alert indicator marks the MSISDN to be used as MSISDN-Alert.
It is permanent subscriber data stored conditionally in the HLR.

2.1.4  Temporary mobile subscriber identity (TMSI)

Temporary mobile subscriber identity (TMSI) is defined in TS 23.003.
The TMSI is temporary subscriber data and is conditionally stored in the VLR.

2.1.5  Packet-Temporary Mobile Subscriber Identity (P-TMSI)

Packet-Temporary Mobile Subscriber Identity (P-TMSI) is defined in TS 23.003. Its usage is described in TS 23.060. P-TMSI is accompanied by the P-TMSI Signature, see clause 2.3.7.
The P-TMSI is temporary subscriber data and is conditionally stored in the SGSN.

2.1.6  Temporary Link Layer Identifier (TLLI)

Temporary Link Layer Identifier (TLLI) is defined in TS 23.003. It is derived from the P-TMSI by the MS and occurs in the variants Local TLLI and Foreign TLLI. The TLLI is temporary subscriber data and is conditionally stored in the SGSN. For use of TLLI see TS 23.060.

2.1.7  Random TLLI

Random TLLI is chosen randomly by the MS. It is defined in TS 23.003. Random TLLI is short living temporary subscriber data and is conditionally stored in the SGSN. For use of Random TLLI see TS 23.060.
A Random TLLI may be used if no valid P-TMSI is available.

2.1.8  Local Mobile Station Identity (LMSI)

Local Mobile Station Identity (LMSI) is defined in TS 23.003. The LMSI is temporary subscriber data. The LMSI may be stored in the VLR; if it is received in the HLR it must be stored there.

2.1.9  International Mobile Equipment Identity (IMEI)

International Mobile Equipment Identity (IMEI) is defined in TS 23.003. The IMEI is temporary subscriber data and is conditionally stored in the HSS, SGSN, S4-SGSN, GGSN, MME, SGW, PGW, ePDG and 3GPP AAA Server.

2.1.10  External Identifier Set |R11|

The External Identifier set contains one or more External Identifier as defined in TS 23.003.
Any one of the External Identifier from the IMSI's External Identifier Set shall uniquely identify a single subscriber (IMSI).
The External Identifier Set is permanent subscriber data and is stored in the HSS and conditionally in the SCEF.

2.1.11  UE radio capability ID |R16|

The UE radio capability ID is defined in TS 23.003. Its usage is described in TS 23.401.
The UE radio capability ID is temporary subscriber data and is conditionally stored in the MME.

2.2  Data related to Mobile Station typesWord‑p. 25

2.2.1  Mobile Station Category

Mobile Station Category has a structure identical to that of "Calling Party's Category" defined in ISUP (ITU-T Recommendation Q.763 [38]).
The following values of category shall be supported:
  • ordinary subscriber.
The category is assigned per IMSI.
Mobile Station Category is permanent subscriber data and is stored in HLR and VLR.

2.2.2  LMU Identifier (GSM only)

The LMU identifier is part of the subscriber data for a Type A LMU, when associated with an NSS based SMLC, and serves to distinguish a Type A LMU from a normal MS.

2.2.3  International Mobile Equipment Identity and Software Version (IMEISV) |R5|

International Mobile Equipment Identity and Software Version (IMEISV) is defined in TS 23.003. The IMEISV is temporary subscriber data and is conditionally stored in the VLR, SGSN, HLR, S4-SGSN, GGSN, MME, SGW, PGW, ePDG and 3GPP AAA Server.


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