Multiband Engineering Guideline(******** Confidential Proprietary)

[echomoon]

Date:31th January 2003
Document ID:TR-0203-037-01
Document version:2.1
Abstract:

This is a revised version describing a basic guidelines to deploy ******** multiband solution, which allows the operator to expand their network coverage and capacity by using more than one frequency band. This document covers planning, deployment, optimisation and configuration issues as well as recommending implementation best practices to meet network operator requirements.******** Confid.

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[kamy]

TABLE OF CONTENT

1. Introduction

..............................................................................................6

1.1. Document Overview

.......................................................................................6

1.2. Quick Guide to Content

..................................................................................7

2. Basic Multiband Network

.........................................................................8

2.1. The Needs for Multiband Network

.................................................................8

2.2. General ETSI Specification of a Multiband Network

......................................9

2.2.1. Frequency Band

.................................................................................9

2.2.1.1. GSM900

.......................................................................................10

2.2.1.2. GSM1800

.....................................................................................10

2.2.1.3. EGSM

...........................................................................................10

2.2.2. MSC Requirement

............................................................................10

2.2.3. Multiband Mobile

..............................................................................11

2.2.4. Idle Mode

.........................................................................................12

2.2.5. Call Establishment

...........................................................................14

2.2.6. Dedicated Mode

...............................................................................14

2.2.7. Multiband Handover

.........................................................................15

2.2.8. Backward Compatibility

....................................................................15

2.3. ******** Multiband Network Solution

..........................................................15

3. Planning and Design

..............................................................................17

3.1. System Design

.............................................................................................18

3.2. Radio Wave Propagation

.............................................................................20

3.3. Site Configuration

........................................................................................23

3.3.1. Mast Head Amplifier

.........................................................................23

3.3.2. Antenna

............................................................................................25

3.3.3. Antenna Feeder

...............................................................................27

3.3.4. Horizon Platform

..............................................................................27

4. Multiband Mobile’s Idle Mode Behaviour

.............................................29

4.1. Controlling the behaviour

.............................................................................29

4.2. C1 and C2 parameters

.................................................................................29

4.3. Example of implementation

..........................................................................31

4.4. Idle Mode Neighbour List

.............................................................................32

4.5. Summary of Database Parameters

..............................................................33

5. Advanced Load Management

................................................................34

5.1. Network and BSC level settings

...................................................................34

5.1.1. MSC Settings

...................................................................................34

5.1.2. Feature license verification

..............................................................35

5.1.3. Handling mobile’s classmark information

.........................................35

5.1.4. Allowed frequency band

...................................................................36

5.2. Cell level parameters settings

......................................................................36

5.2.1. Frequency type in a cell

...................................................................36

5.2.2. Handover between frequency band

.................................................36

5.2.3. Frequency band reported in the measurement report

......................36

5.2.4. Frequency band preference

.............................................................38

5.2.5. Band preference mode

.....................................................................38

5.2.5.1. Band_preference_mode=0

...........................................................38

5.2.5.2. Band_preference_mode=1

...........................................................38

5.2.5.3. Band_preference_mode=2

...........................................................39

5.2.5.4. Band_preference_mode=3

...........................................................39

5.2.5.5. Band_preference_mode=4

...........................................................39

5.2.5.6. Band_preference_mode=5

...........................................................39

5.2.5.7. Band_preference_mode=6

...........................................................39

5.2.6. Multiband related statistics

...............................................................40

5.2.6.1. INTERBAND_ACTIVITY

..............................................................40

5.2.6.2. MS_TCH_USAGE_BY_TYPE

......................................................41

5.2.6.3. MS_ACCESS_BY_TYPE

.............................................................41

5.3. Advanced load management in the network

................................................42

5.3.1.1. Microcell handover

.......................................................................42

5.3.1.2. Example of implementation

..........................................................43

5.4. Summary of BSS database parameters

.......................................................46

6. Multiband Feature Enhancement

..........................................................48

6.1. Support for BCCH and SDCCH in EGSM frequency band

..........................48

6.2. Advanced Load Management with EGSM Carriers

.....................................48

6.3. Multiband congestion relief enhancement

...................................................49

7. Single BCCH (Dualband Cell)

................................................................50

7.1. Benefits of single BCCH feature

..................................................................51

7.2. Dualband cell requirements

.........................................................................53

7.3. Zone definition

.............................................................................................53

7.4. Dualband Offset

...........................................................................................54

7.5. Criteria for inner zone usage

........................................................................55

7.6. Advanced load management in dualband cell

.............................................58

7.6.1. Band_preference_mode=0

...............................................................58

7.6.2. Band_preference_mode=1

...............................................................58

7.6.3. Band_preference_mode=2

...............................................................58

7.6.4. Band_preference_mode=3

...............................................................59

7.6.5. Band_preference_mode=4

...............................................................59

7.6.6. Band_preference_mode=5

...............................................................59

7.6.7. Band_preference_mode=6

...............................................................59

7.7. Optional criteria for entering inner zone

.......................................................59

7.8. TCH assignment delay

.................................................................................60

7.9. Power budget calculation

.............................................................................60

7.10. Single BCCH related statistics

.....................................................................62

7.10.1. TCH_USAGE_INNER _ZONE

.........................................................62

7.10.2. TCH_CONG_INNER_ZONE

............................................................62

7.10.3. ZONE_CHANGE_ATMPT

................................................................62

7.10.4. ZONE_CHANGE_SUC

....................................................................63

7.11. Impact of Single BCCH to Key Performance Metric

.....................................63

7.11.1. Cell level drop call rate

.....................................................................63

7.11.2. TCH RF Loss Rate

...........................................................................65

7.12. Single BCCH interaction with other feature and limitation

...........................65

7.13. Dualband cell conversion procedure

............................................................66

7.14. Example of implementation

..........................................................................66

7.15. Summary BSS database parameter

............................................................69

8. Coincident Multiband Handover

...........................................................71

8.1. Definition of coincident cells and handover execution

.................................71

8.1.1. Better cell detection

..........................................................................73

8.1.2. Coincident cell redirection

................................................................74

8.2. Coincident multiband handover settings

......................................................74

8.3. Example of implementation

..........................................................................75

System Support

8.3.1. Scenario 1

........................................................................................76

8.3.2. Scenario 2

........................................................................................78

8.4. Summary of BSS database parameters

.......................................................80

9. Optimisation in Multiband Network

......................................................81

9.1. Optimising Advanced Load Management

....................................................81

9.2. Optimising Single BCCH

..............................................................................83

9.3. Optimising coincident multiband handover

..................................................87

10. Interaction with Other Features

............................................................90

10.1. Frequency hopping

......................................................................................90

10.2. General Packet Radio System (GPRS)

.......................................................93

10.3. Microcellular

.................................................................................................93

11. Multivendor Implementation

.................................................................94

11.1. Considerations

.............................................................................................94

11.2. Idle mode

.....................................................................................................96

11.3. Dedicated Mode

...........................................................................................97

Appendix A.

...................................................................................................100

References

....................................................................................................101

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