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Mobile Positioning in GSM Networks

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Mind Commerce also offers a ANSI Positioning Course (Click Here)

Mind Commerce also offers a Mobile Positioning Publication (Click Here)

Overview: This course explains the major methods and procedures for use in positioning mobile terminals in GSM networks. The standards-based LCS reference architecture, network element function and operations are described, as are the challenges to ensuring end-user security and privacy and location procedures involved in positioning the GSM mobile station and the use of location information for applications. The seminar attendee will also learn the function and procedures of each network element in support of GSM emergency services and commercial application in addition to the limitations of each positioning technology and the appropriate use of various methods and procedures for different LCS applications. In addition to emerging commercial applications there are numerous ramifications and implications of GSM positioning in military, national defense and emergency response applications.

Duration: 1 - 3 days

Prerequisites: This is a relatively detailed course, requiring intermediate knowledge of mobile communications systems and operations such as GSM networks, SS7, and GSM MAP messaging and procedures.

Objectives:

At the conclusion of the workshop the student will be able to:

Understand the major methods and procedures for use in positioning mobile terminals in GSM networks
Identify the standards-based LCS reference architecture, network element function and operation
Identify the issues and challenges to ensuring end user security and privacy
Understand the function of each network element, interface, and logical procedure in the GSM LCS reference architecture
Understand the location procedures involved in positioning the GSM mobile station and the use of location information for applications
Understand the function and procedures of each network element in support of GSM emergency services and commercial application
Understand the limitations of each positioning technology and identify the appropriate use of various methods and procedures for different LCS applications

Course Outline:

1. Course Introduction

2. Introduction to Positioning GSM Cellular Phones

2.1. LCS vs. LBS

2.2. Standardization bodies

2.3. GSM LCS reference model

2.4. QoS

2.5. LCS Procedures

2.6. Positioning Methods

3. Overview of LCS Architecture

3.1. External LCS Client

3.2. GERAN/UTRAN Architecture

3.3. GMLC, SMLC, LMU, gsmSCF

3.4. GSM Positioning Scenarios

3.5. LCS Functionalities

4. Overview of Positioning Methods

4.1. UE-based vs. UE-assisted

4.2. Cell ID +TA / RTT

4.3. TOA methods

4.4. AOA

4.5. Radio Fingerprinting

4.6. TA, NMR, and STK

4.7. Hybrid methods

4.8. Summary and Evaluation of Methods

5. Security and Privacy: Issues and Solutions

5.1. POI

5.2. LCS Subscription Data

5.3. LCS Client Data

5.4. Special Cases

5.4.1. Emergency Services

5.4.2. Lawful Intercept

6. LCS Network Infrastructure

6.1. Discussion of LCS Network Element Function

6.1.1. GMLC

6.1.2. SMLC

6.1.3. HLR

6.1.4. MSC/VLR

6.1.5. gsmSCF

6.1.6. BSC

6.1.7. BTS

6.1.8. LMU – Type A

6.1.9. LMU – Type B

6.2. Discussion of Network Element Interfaces

6.2.1. Le (GMCL-to-LCS client)

6.2.2. Lc (GMLC-to-gsmSCF)

6.2.3. Lg (GMLC-to-MSC/VLR)

6.2.4. Lh (GMLC-to-HLR)

6.2.5. Ls (MSC/VLR-to-SMLC)

6.2.6. Lp (SMLC-to-SMLC)

6.2.7. Lb (SMLC-to-BSC)

6.2.8. A (MSC/VLR-to-BSC)

6.2.9. Abis

6.2.10. Um

6.3. Logical Functions

6.3.1. Discussion of Logical Functions

6.3.2. Mapping of Logical Functions to Physical Elements

7. GSM Location Determination Procedures

7.1. Introduction to Location Procedures

7.1.1. MTR-LR

7.1.2. MO-LR

7.1.3. NI-LR

7.2. LCS Protocols

7.3. Evaluation of MT-LR Sequence Diagram

7.4. Evaluation of MO-LR signaling

7.5. Evaluation of NI-LR procedure

8. Cell ID-based Positioning Methods

8.1. MS/UE States

8.2. CGI, LAI, SAI, URA

8.3. Differences between Cell ID in GSM vs. UMTS

8.4. UE in Soft-Handover

9. E-OTD / OTDOA Methods

9.1. Analysis of DL-TDOA

9.2. OTD, RTD, GTD

9.3. Radio aspects of OTD

9.4. IPDL

9.5. E-OTD/OTDOA Procedures

9.6. CBC for assistance data

10. Use of A-GPS Technology for Positioning

10.1. Introduction to GPS, D-GPS

10.2. GPS navigation signal

10.3. GPS vs. A-GPS

10.4. Assistance Data in GPS

10.5. A-GPS procedure

10.6. UE-based/assisted A-GPS

10.7. LMU in A-GPS

10.8. Other Satellite-based Positioning Systems

11. Emergency Services

11.1. GSM NA - FCC E-911

11.1.1. Evaluation of J-STD-036

11.1.2. Network Architecture and Procedures

11.2. GSM – CGALIES

11.2.1. Standardization Efforts

11.2.2. Network Architecture and Procedures

12. LCS Applications

12.1. The Le interface, MLP (LIF)

12.2. LCS Applications to Positioning Methods Mapping

12.2.1. Evaluation of Accuracy and Degree of Uncertainty

12.2.2. Applying QoS Rules to Positioning for Applications

12.2.3. PDE Selection Procedures

12.2.4. Positioning in GPRS and UMTS Networks

12.2.5. Mapping Positioning Methods and Procedures to Applications

12.3. LCS Application Case studies

12.3.1. Emergency Services

12.3.2. Commercial Service (TBD)

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Click Here for PDF of Course Outline

Click Here for Related Courses and Publications

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