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3GPP Glossaries

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|   SAC   |   SAI   |   SNAC   |   SNA‑Id   |   STI   |   STI‑rSR   |   S‑TMSI   |   STN   |   STN‑SR   |

 

Source:   TS 23.003, clause 12.5

The last component of the SAI.

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Source:   TS 23.003, clause 12.5

The Service Area Identifier (SAI) is used to identify an area consisting of one or more cells belonging to the same Location Area. Such an area is called a Service Area and can be used for indicating the location of a UE to the CN.

The SAC is defined by the operator, and set in the RNC via OAM.
3GPP SAI Structure

 

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Source:   TS 23.003, clause 12.6

The last component of the SNA-Id.

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Source:   TS 23.003, clause 12.6

The Shared Network Area Identifier (SNA-Id) is used to identify an area consisting of one or more Location Areas. Such an area is called a Shared Network Area and can be used to grant access rights to parts of a Shared Network to a UE in connected mode (see TS 25.401).
3GPP SNA-ID Structure

 

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Source:   TS 23.003, clause 18.5

A Session Transfer Identifier (STI) is a SIP URI or SIP dialogue ID and is used by the UE to request Session Transfer of a media path.

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Source:   TS 23.003, clause 18.8

A Session Transfer Identifier for CS to PS Single Radio Voice Call Continuity (STI‑rSR) is a SIP URI and is used by the UE to request access transfer of a media path.

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Source:   TS 23.003, clause 2.9

The S-TMSI is the shortened form of the GUTI to enable more efficient radio signalling procedures (e.g. paging and Service Request). For paging purposes, the mobile is paged with the S-TMSI.

The S-TMSI shall be constructed from the MMEC and the M-TMSI.
3GPP S-TMSI Structure

 

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Source:   TS 23.003, clause 18.4

A Session Transfer Number (STN) is a public telecommunication number, as defined by ITU-T Recommendation E.164 and is used by the UE to request Session Transfer of the media path from PS to CS access.

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Source:   TS 23.003, clause 18.6

The Session Transfer Number for Single Radio Voice Call Continuity (STN-SR) is a public telecommunication number, as defined by ITU-T Recommendation E.164 and is used by the MSC Server to request session transfer of the media path from the PS domain to CS domain.

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