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ETSI TS 123 012
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ETSI TS 123 012 Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Location management procedures (3GPP TS 23.012 version 14.0.0 Release 14)
standard by European Telecommunications Standards Institute, 03/01/2017
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Full Description
ETSI TS 123 012 describes the location management procedures for the circuit switched domain, with respect tothe application level functional behaviour. This is to be distinguished from the corresponding protocol handlingbehaviour, which is specified in 3GPP TS 29.002 [8]. The following location management procedures are included:location updating;location cancellation;MS purging;IMSI attach/detach.The procedures in the Mobile Station (MS) are described in 3GPP TS 23.022 [6]. The procedures between MSC, VLRand HLR utilise the Mobile Application Part (MAP) and details concerning the protocol handling are contained in 3GPPTS 29.002 [8].The present document excludes location management procedures for the packet switched domain, which are covered in3GPP TS 23.060 [20].
The descriptions herein depict a logical separation between the MSC and VLR. This logical separation, as well as themessages transferred between the two logical entities are the basis of a model used to define the externally visiblebehaviour of the MSC/VLR, which a may be a single physical entity. They do not impose any requirement except thedefinition of the externally visible behaviour.