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TR 23.909
Technical report on the Gateway Location Register

3GPP‑Page   ETSI‑search   ToC  
V4.0.0 (PDF)  2001/04  62 p.
V3.0.1  2000/05  62 p.
Mr. Park, Ian David Chalmers

full Table of Contents for  TR 23.909  Word version:  4.0.0

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1  ScopeWord‑p. 6

The present document describes the use of a Gateway Location Register within the UMTS Core Network as a means of reducing the amount of MAP signalling traffic associated with location management carried over inter-PLMN links for roaming users.
One of the requirements of the present document is to describe a network architecture where the presence of a GLR within a UMTS PLMN is not visible to either a second generation PLMN (i.e. GSM release 98 or earlier) or a 3G PLMN (i.e. GSM Release 99 or later). So the objective of this report is that changes to GSM specified interfaces or procedures will not be needed in order to:
  • integrate a GLR into a UMTS PLMN;
  • allow interworking between a GLR-enabled UMTS network and a GSM or UMTS network without a GLR.
The present document will be restricted to the study of the case where the GLR supports one VPLMN only. A separate TR will be required if support of multiple VPLMNs by the GLR is to be studied.
The present document will study support of multiple HPLMNs by the GLR.

2  ReferencesWord‑p. 6

3  Definitions and abbreviationsWord‑p. 6

3.1  DefinitionsWord‑p. 6

3.2  AbbreviationsWord‑p. 6

4  IntroductionWord‑p. 7

5  Roaming ScenariosWord‑p. 7

6  Logical Network ModelWord‑p. 8

6.1  GLRWord‑p. 8

6.2  Intermediate MSCWord‑p. 9

6.3  Intermediate GSNWord‑p. 9

6.4  Gate NodeWord‑p. 9

7  Functional DescriptionWord‑p. 9

7.1  Generic FunctionsWord‑p. 9

7.2  Circuit Switched ServiceWord‑p. 11

7.3  Packet Switched ServiceWord‑p. 22

7.4  Common ProceduresWord‑p. 35

7.5  Short Message ServiceWord‑p. 39

7.6  Subscriber and Equipment TraceWord‑p. 45

7.7  Impact of GLR on CAMELWord‑p. 45

7.8  Interaction With CCBSWord‑p. 46

7.9  Location Service (LCS)Word‑p. 47

8  Mobile terminating Location Request Subscriber InformationWord‑p. 47

9  Percentage reduction of Inter-PLMN MAP trafficWord‑p. 52

10  Interworking with existing GSM networksWord‑p. 57

11  Impact on GSM Release 99 SpecificationsWord‑p. 57

12  Advantages of the GLRWord‑p. 58

13  Drawbacks of the GLRWord‑p. 58

14  Open IssuesWord‑p. 59

$  Change historyWord‑p. 60

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