Table of Contents

Foreword
1 Scope
2 References
3 Definitions and abbreviations
   3.1 Definitions
   3.2 Abbreviations
4 Introduction
5 Roaming Scenarios
   5.1 Relationship between GLR and HLR
   5.2 Relationship between GLR and VLR
6 Logical Network Model
   6.1 GLR
   6.2 Intermediate MSC
   6.3 Intermediate GSN
   6.4 Gate Node
7 Functional Description
   7.1 Generic Functions
   7.2 Circuit Switched Service
   7.3 Packet Switched Service
   7.4 Common Procedures
   7.5 Short Message Service
   7.6 Subscriber and Equipment Trace
   7.7 Impact of GLR on CAMEL
   7.8 Interaction With CCBS
   7.9 Location Service (LCS)
8 Mobile terminating Location Request Subscriber Information
   8.1 Information for HLR emulation
   8.2 Information for address and identity conversion
   8.3 Information for Location updating Screening
   8.4 Other Information
   8.5 IMSI Record in GLR
9 Percentage reduction of Inter-PLMN MAP traffic
   9.1 Case 1: A businessman visits a large city
   9.2 Case 2: A tourist visits a large city for shopping
   9.3 Location Update
10 Interworking with existing GSM networks
11 Impact on GSM Release 99 Specifications
12 Advantages of the GLR
   12.1 Optimisation of MAP Traffic
   12.2 Interworking With GSM
13 Drawbacks of the GLR
   13.1 Application level analysis of signalling
   13.2 Reliability Issues
   13.3 Upgrading of GLR capabilities
   13.4 Handling of unsupported services
   13.5 VLR Location Based Services
14 Open Issues
   14.1 Additional signalling load on HLR restart
Annex A: Change history

Abstract

Specifies 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.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	3GPP CN 2