Enhanced Cell ID in Traces.pdf

Enhanced Cell ID in Traces

USER DESCRIPTION

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Copyright

Ericsson AB 2011. All rights reserved. No part of this document may bereproduced in any form without the written permission of the copyright owner.

Disclaimer

The contents of this document are subject to revision without notice due tocontinued progress in methodology, design and manufacturing. Ericsson shallhave no liability for any error or damage of any kind resulting from the useof this document.

Trademark List

All trademarks mentioned herein are the property of their respective owners.These are shown in the document Trademark Information.

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Contents

Contents

1 Introduction 1

1.1 Basic Characteristics 1

1.2 Benefits 1

2 Feature Operation 3

2.1 Network Requirements 3

2.2 Collection of TA data 3

3 Parameters 5

3.1 Introduced Parameters 5

3.2 Affected Parameters 5

4 Network Impact 7

5 Associated Features and Affected Functions 9

5.1 Prerequisite Features 9

5.2 Affected Features 9

5.3 Related Features 9

5.4 Affected System Functions 9

6 Performance 11

6.1 KPIs 11

6.2 Counters 11

6.3 Events 11

7 O&M Information 13

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Introduction

1 Introduction

This document describes the Enhanced Cell ID in Traces feature and its mainbenefits and impacts in the LTE RAN.

The Enhanced Cell ID in Traces feature makes it possible to identify the locationof a UE at a certain time. The uplink Timing Alignment (TA) value is collectedand used for group data statistics. The primary use is geo-observability.

1.1 Basic Characteristics

This section describes the basic characteristics of the feature.

Feature Identity

TDD: FAJ 221 2025, Enhanced Cell ID in Traces

Replaces: N/A

Dependencies

This feature has no prerequisite features.

This feature affects no other features.

1.2 Benefits

This section describes the benefits of this feature.

The benefits of Enhanced Cell ID in Traces are to geographically locateproblem areas, cell border, coverage holes, crowded areas and minimize drivetest activities.

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Feature Operation

2 Feature Operation

This section describes the Enhanced Cell ID in Traces feature in more detail,including network configuration requirements and operation flows.

2.1 Network Requirements

The following must be fulfilled at feature activation:

Contact the local Ericsson support to activate the Enhanced Cell ID inTraces feature.

2.2 Collection of TA data

This feature makes it possible to group collect statistics on TA values. The TAvalue gives an indication of the distance of an UE to an antenna. Together withthe signal characteristics from other cells it is possible, after post processing,to identify the location of the UE at a certain time.

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Parameters

3 Parameters

This section describes the parameters introduced by the Enhanced Cell ID inTraces feature and parameters affected by activating the feature.

3.1 Introduced Parameters

Table 1 describes the parameters introduced by the feature.

Table 1 Introduced Parameters

Parameter Description

EnhCellIdInTracesId The value component of the Relative Distinguished Name (RDN).

keyIdEnhCellIdInTraces The license key ID for the feature Enhanced Cell ID in Traces.

featureStateEnhCellIdInTraces

Activates or deactivates the licensed feature Enhanced Cell IDin Traces. The value of the attribute is irrelevant when no validlicense key is installed.

licenseStateEnhCellIdInTraces

Indicates if the licensed state of the Enhanced Cell ID in Tracesfeature is ENABLED or DISABLED, and whether a valid licensekey is installed.

serviceStateEnhCellIdInTraces

Indicates if the Enhanced Cell ID in Traces feature is operableor inoperable.

3.2 Affected Parameters

The implementation of this feature affects no parameters.

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Network Impact

4 Network Impact

This section describes how the Enhanced Cell ID in Traces feature impactsthe network functions and capabilities.

The implementation of this feature has no direct impact on network coverage,capacity or mobility.

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Associated Features and Affected Functions

5 Associated Features and AffectedFunctions

This section describes how the Enhanced Cell ID in Traces feature affectsother features and functions.

5.1 Prerequisite Features

This feature has no prerequisite features.

5.2 Affected Features

This feature affects no other feature.

5.3 Related Features

This feature is not related to any other feature.

5.4 Affected System Functions

This feature affects no system functions.

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Performance

6 Performance

This section describes performance indicators, counters, and events associatedwith the Enhanced Cell ID in Traces feature.

6.1 KPIs

This feature has no associated Key Performance Indicators (KPIs).

6.2 Counters

This feature has no directly associated counters.

6.3 Events

Table 2 lists the events associated with the Enhanced Cell ID in Traces feature.

Table 2 Events

Event Event Parameter Description

INTERNAL_PER_RADIO_UE_MEASUREMENT_TA

EVENT_PARAM_TA_INTERVAL Interval length between twoTiming Advance values in theEVENT_ARRAY_TA array


EVENT_ARRAY_TA Array, where the Timing Advancevalue are stored.


EVENT_PARAM_TIMESTAMP_START_HOUR

Timestamp when the first TimingAdvance value is stored toEVENT_ARRAY_TA array


EVENT_PARAM_TIMESTAMP_START_MINUTE



EVENT_PARAM_TIMESTAMP_START_SECOND



EVENT_PARAM_TIMESTAMP_START_MILLISEC


More information about events can be found in PM Event List.

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O&M Information

7 O&M Information

This section provides Operation and Maintenance (O&M) information for theEnhanced Cell ID in Traces feature.

Contact the local Ericsson support to activate or deactivate the Enhanced CellID in Traces feature. The enhanced cell ID in Traces feature is activated witha license. For full details of the license activation process, refer to LicenseManagement.

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toc1 Introduction1.1 Basic CharacteristicsDependencies1.2 Benefits2 Feature Operation2.1 Network Requirements2.2 Collection of TA data3 Parameters3.1 Introduced Parameters3.2 Affected Parameters4 Network Impact5 Associated Features and Affected Functions5.1 Prerequisite Features5.2 Affected Features5.3 Related Features5.4 Affected System Functions6 Performance 6.1 KPIs6.2 Counters6.3 Events7 O&M Information

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Enhanced Cell ID in Traces.pdf