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GSM/EDGE BSS, Rel.

GSM/EDGE BSS, Rel.

RG20(BSS), Operating

RG20(BSS), Operating

Documentation, Issue 09

Documentation, Issue 09

Activate

Activate

Activating and Testing BSS10101,

Activating and Testing BSS10101,

BSS11107, BSS20477, BSS20858 and

BSS11107, BSS20477, BSS20858 and

BSS20132: GSM-WCDMA Interworking

BSS20132: GSM-WCDMA Interworking

DN01159392

DN01159392

Issue 6-0

Issue 6-0

Approval Date 20/03/2008 00:00:00

Approval Date 20/03/2008 00:00:00

Confidential

Confidential

Nokia Siemens Networks is continually striving to reduce the adverse environmental effects of Nokia Siemens Networks is continually striving to reduce the adverse environmental effects of its products and services. We w

its products and services. We w ould like to encourage you as our customerould like to encourage you as our customer s and users to joins and users to join us in working towards a cleaner, safer environment. Please recycle product packaging and us in working towards a cleaner, safer environment. Please recycle product packaging and follow the recommendations for power use and proper disposal of our products and their follow the recommendations for power use and proper disposal of our products and their compo-nents.

nents.

If you should have questions regarding our Environment

If you should have questions regarding our Environment al Policy or any of the environmal Policy or any of the environm entalental services we offer, please contact us at

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 Activating and Testing BSS10101, BSS11107, BSS20477, BSS20858 and BSS20132: GSM-WCDMA

The information in this document i s subject to change without notice and descri bes only the product defined in the introduction of this documentation. This documentation is in tended for the use of Nokia Siemens Networks c ustomers only for the purposes of the agreement under which the document is submitted, and no part of it may be used, reproduced, modified or transmitted in any form or means without the prior written permission of Nokia Siemens Networks. The documentation has been prepared to be used by pr ofessional and properly trained personnel, and the customer assumes full responsibility when using it. Nokia Siemens Networks welcomes customer comments as part of the pr ocess of continuous development and improvement of the documentation.

The information or statements given in this documentation concerning the suitability, capacity, or performance of the mentioned hardware or so ftware products are given "as is" and all liability arising in connection with such hardware or software products shall be defined conclusively and finally in a separate agreement between Nokia Siemens Networks and the customer. However , Nokia Siemens Networks has made all reasonable efforts to ensure that the instructions contained in the document are adequate and free of m aterial errors and omissions. N okia Siemens Networks will, if deemed necessary by Nokia Siemens Networks, explain issues whi ch may not be covered by the document.

Nokia Siemens Networks will correct errors in this documentation as soon as possible. IN NO EVENT WILL Nokia Siemens Networks BE LIABLE FOR ERRORS IN THIS DOCUMENTA-TION OR FOR ANY DAMAGES, INCLUDING B UT NOT LIMITED TO SPECIAL, DIRECT, INDI-RECT, INCIDENTAL OR CONSEQUENTIAL OR ANY LOSSES, SUCH AS BUT NOT LIMITED TO LOSS OF PROFIT, REVENUE, BUSINESS INTERRUPTION, BUSINESS OPPORTUNITY OR DATA,THAT MAY ARISE FROM THE USE OF THIS DOCUM ENT OR THE INFORMATION IN IT.

This documentation and the product it desc ribes are considered protected by copyrights and other intellectual property rights according to the applicable laws.

The wave logo is a trademark of Nokia Siemens Networks Oy. Nokia is a registered trademark of Nokia Corporation. Siemens is a registered trademark of Siemens AG.

Other product names mentioned in this document may be trademarks of their respective owners, and they are mentioned for identification purposes only.

Copyright © Nokia Siemens Networks 2012. All rights reserved

f

Important Notice on Product Safety

This product may present safety risks due to laser, electricity, heat, and other sources of danger.

Only trained and qualified personnel may i nstall, operate, maintain or otherwise handle this product and only after having carefully read the safety information applicable to this product.

The safety information is pr ovided in the Safety Information section in the “ Legal, Safety and Environmental Information” part of this document or documentation set.

The same text in German:

f

Wichtiger Hinweis zur Produktsicherheit

Von diesem Produkt können Gefahren durch Laser, Elektrizität, Hitzeentwicklung oder andere Gefahrenquellen ausgehen.

Installation, Betrieb, Wartung und sonstige Handhabung des Pr oduktes darf nur durch geschultes und qualifiziertes Personal unter Be achtung der anwendbaren Sicherheits-anforderungen erfolgen.

Die Sicherheitsanforderungen finden Sie unter „Sicherheitshinweise“ im Teil „Legal, Safety and Environmental Information“ dieses Dokuments oder dieses Dokumentations-satzes.

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DN01159392 3  Activating and Testing BSS10101, BSS11107,

BSS20477, BSS20858 and BSS20132: GSM-WCDMA

Id:0900d8058059e080

Table of contents

This document has 19 pages.

Summary of changes . . . 5 1 Activating and testing GSM-WCDMA Inter-System Handover . . . 6 2 Activating and testing GSM-WCDMA Inter-System Direct Access . . . . 10 3 Activating CPICH RSCP Based Criterion for 2G to 3G Cell Reselection 14 4 Activating WCDMA Neighbour Cell Reporting Enhancement . . . 16 5 Activating Mobile Specific Channel Release Message . . . 18 6 Deactivating CPICH RSCP Based Criterion for 2G to 3G Cell Reselection,

WCDMA Neighbour Cell Reporting Enhancement, and Mobile Specific Channel Release Message . . . . . . 19

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 Activating and Testing BSS10101, BSS11107, BSS20477, BSS20858 and BSS20132: GSM-WCDMA

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DN01159392 5  Activating and Testing BSS10101, BSS11107,

BSS20477, BSS20858 and BSS20132: GSM-WCDMA

Summary of changes

Id:0900d8058059e06a

Summary of changes

Changes between document issues are cumulative. Therefore, the latest document issue contains all changes made to previous issues.

Changes made between issues 6-0 a nd 5-0

The name of the document has b een changed from Testing BSS10101 and BSS11107: GSM-WCDMA Interworking  to Activating a nd Testing BSS10101, BSS11107,

BSS20477, BSS20858 and BSS20132: GSM-WCDMA Interworking.

The name of chapter 1 has been changed to Activating and testing GSM-WCDMA Inter-System Handover. A command to check the Inter-Inter-System Handover parameter has been added. In step 5, information on when ISHO is disabled in dedicated mode has been updated.

The name of chapter 2 has been changed to Activating and testing GSM-WCDMA Inter-System Direct Access. A command to c heck the Inter-Inter-System Handover parameter ha s been added

References to PBCCH channel has been removed, since it is no longer supported. New activation instructions have been added for CPICH RSCP Based Criterion for 2G to 3G Cell Reselection, WCDMA Neighbour Cell Reporting Enhancement, and Mobile Specific Channel Release Message.

Changes made between issues 5-0 and 4-1

In Testing GSM-WCDMA System Handover  and Testing GSM-WCDMA Inter-System Direct Access, a list of BTSs that support GSM-WCDMA inter-system handover has been added.

The term mobile station (MS) has been replaced with the term user equipment (UE). References to NetAct and MEFICO have been added.

Changes made between issues 4-1 a nd 4-0

 A note on disabling inter-system handover in dedicated mode has been added.

Information on MSC service priority and t he triggering of the inter-system direct access has been added and modified.

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 Activating and Testing BSS10101, BSS11107, BSS20477, BSS20858 and BSS20132: GSM-WCDMA  Activating and testing GSM-WCDMA Inter-System

Handover 

1 Activating and testing GSM-WCDMA

Inter-System Handover 

The purpose of GSM-WCDMA Inter-System Handover is to ena ble the user equipment (UE) to re-select a WCDMA RAN cell while camping on the GSM cell, and to enable the BSC to initiate a handover from a GSM cell to a WCDMA RAN cell.

GSM-WCDMA Inter-System Handover is an application software in the BSC. It is always active if the operator has deployed it in the network. Thus no activation and deactivation procedures are needed for GSM-WCDMA Inter-System Handover.

GSM-WCDMA Inter-System Handover has no effects on hardware or firmware.

 For a description, see GSM-WCDMA Interworking  under Feature Descriptions/Radio network performance in the PDF view.

Before you start

Make sure that all interfaces between BTS, BSC, 3G MSC, RNC and WBTS and also network elements are configured and working properly. Also make sure that both of the application software products and software packets that are requ ired for enabling GSM-WCDMA Inter-System Handover and Inter-System Direct Access are activated and in use in each participating network element.

Network elements involved:

 • 3 dual mode GSM/WCDMA MSS  • BTS

BTS with SW release which supports sending of new information elements.  Also needed: 1 TRX: MBCCHC and 7 TCHFs.

 • WBTS WCDMA BTS  • RNC RN1.5 or later   • BSC S10.5 or later   • 3G MSC

3G MSC that supports the Iu interface and the A interface. Steps

Check that GSM-WCDMA Inter-System Handover is active (WOS).

ZWOS:2,739;

GSM-WCDMA Inter-System Handover is always active if you have deployed it in the network.

Define an adjacent cell under an RNC for the BTS (EAE).

ZEAE:BTS=<BTS identification>:INDEX=<adjacent cell index>: RNC=<radio network controller identifier>, CI=<cell

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 Activating and testing GSM-WCDMA Inter-System Handover 

Id:0900d8058059e06d

code>, FREQ=<WCDMA downlink carrier frequency>,SCC=<scrambling code>;

Note that the mobile network code (MNC) values, for example, 6 (1-digit), 06 (2-digit) and 006 (3-digit) are different from the BSC's point of view. The use of 1-digit MNC is not allowed according to 3GPP specifications, but it is not prevented by the BSC. The value domain is the following:

 • 0..9 (if a single digit MNC is given, the preceding digits will have value 0xF which

means "not defined")

 • 00..99 (if a 2-digit MNC is given, the preceding digit will have value 0xF which means

"not defined")

 • 000...999 (a 3-digit MNC is stored as it has been given by user)

Set the threshold for the UE to measure WCDMA RAN cells an d cell reselection offset while camping on a GSM cell (EQM).

ZEQM:BTS=<BTS identification>:::QSRI=7,QSRP=<gprs threshold to search UTRAN cells>,FDD=<fdd and tdd cell reselect offset>;

Set the threshold to a value that dual mode GSM/WCDMA UE will always search for and measure WCDMA RAN cells which are defined as adjacent cells for the serving GSM cell.

Note that in GSM network, there is only an occasional need to measure adjacent WCDMA RAN cells while the UE is camped on a GSM cell. If the QSRI parameter has a threshold value 7, the adjacent WCDMA RAN cells are continuou sly measured by dual mode GSM/WCDMA UE. Therefore the threshold value 7 is not optimal for QSRI, because the additional measurements increase the power consumption of dual mode GSM/WCDMA UE. By using the value 15 for QSRI, WCDMA RAN cell related informa-tion is not sent on BCCH channels of the current serving GSM cell, even though some WCDMA RAN cells exist as adjacent cells for the serving GSM cell.

GPRS-capable dual mode GSM/WCDMA UE uses parameter GPRS threshold to

search WCDMA RAN cells (QSRP) instead of the QSRI parameter when NCCR

func-tionality is active in the BSC. The QS RP parameter is sent to the UE in Packet Cell

Change Order andPacket Measurement Order messages.

The FDD parameter defines by how much the measured received signal code power (RSCP) value of the WCDMA RAN cell has to exceed the RLA_C of the serving GSM cell and all suitable nonserving GSM cells before the UE performs a cell reselection. Set the threshold for the UE to measure WCDMA RAN cells while the UE has a circuit switched speech connection in a serv ing GSM cell (EHN).

Set the threshold to a value that dual mode GSM/WCDMA UE in dedicated state will always search for and measure WCDMA RAN cells which are defined as adj acent cells for the serving GSM cell.

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 Activating and Testing BSS10101, BSS11107, BSS20477, BSS20858 and BSS20132: GSM-WCDMA  Activating and testing GSM-WCDMA Inter-System

Handover 

Set the load threshold for the s erving GSM cell to enable inter-system handover (EHN).

Set the LTSC threshold to a value that traffic load threshold of the serving GSM cell is exceeded, and therefore the handover algorithm is allowed to initiate an inter-system handover for a speech connection to a WCDMA RAN cell.

ZEHN:BTS=<BTS identification>:LTSC=35;

Note that the UE is not allowed to search for and measure WCDMA RAN cells in dedi-cated mode when the parameter threshold for multi-RAT MS (QSRC) is set to value 15 (NEVER). However, inter-system handover (ISHO) is not completely disabled as a result. This is because the UE is allowed to use the idle mode parameters

threshold to search WCDMA RAN cells (QSRI) andGPRS threshold to

search WCDMA RAN cells (QSRP) to search for and measure adjacent WCDMA

RAN cells in dedicated mode before it receives the parameter QSRC in the

MEASUREMENT INFORMATION message.

ISHO is disabled in dedicated mode o nly if the parameter number of measured FDD cells (FDMR) is set to value 0.

Set the minimum CPICH Ec/Io level for handover target c ell (EAH).

Set the minimum CPICH Ec/Io level defined for the adjacent WCDMA RAN cell to a value that the Ec/Io value reported by the UE exceeds the given minimum level.

ZEAH:BTS=<BTS identification>:INDEX=<adjacent cell index>:::MET=–18;

Note that the measured and reported Ec/Io value should be over the threshold or the adjacent WCDMA RAN cell is not considered a targe t cell for an inter-system handover. The MET value 0.5 means that a handover can never be performed from this serving GSM cell to the adjacent WCDMA RAN cell despite the reported Ec/Io values.

Set the adjacent WCDMA RAN cell averaging window size (EHN).

ZEHN:BTS=<BTS identification>:UAWS=1;

Set the number of WCDMA RAN zero results (EHN).

ZEHN:BTS=<BTS identification>:UNOZ=0;

Set the all adjacent WCDMA RAN cells averaged  (EHN).

ZEHN:BTS=<BTS identification>:UAAC=Y;

Set up two calls to source BTS. No handovers will be ma de. Modify BSC Level Clear Code (PM) Measurement (TPM).

ZTPM:MEASUR,CC_PM:<measurement day>,<measurement interval>,<output interval>;

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DN01159392 9  Activating and Testing BSS10101, BSS11107,

BSS20477, BSS20858 and BSS20132: GSM-WCDMA

 Activating and testing GSM-WCDMA Inter-System Handover 

Id:0900d8058059e06d Start the measurement (TPS).

ZTPS:MEASUR,CC_PM:<start date>,<stop date>;

Interrogate BSC Level Clear Code (PM) Measurement (TPI).

ZTPI:MEASUR,CC_PM;

Expected outcome

The administrative state is UNLOCKED and the operational state is ENABLED. Setup a third call to source BTS.

Theminimum traffic load for a speech call of the source BTS is exceeded

and based on the radio link measurements a handover is triggered. Wait for one minute.

Disconnect the call. Verify handover.

 At the end of the measurement period, check the measurement data in Nokia NetAct or in BSC using the MEFICO tool. Check that the counter 051152 EXT OUT ISHO is updated correctly in the measurement file. For more information, see:

 • Reporter and Performance M anagement Principles in NetAct documentation  • Converting BSC Measurement and Observation Result Files with MEFICO

Further information

 According to 3GPP specifications, a dual mode GSM-WCDMA UE is able to m onitor maximum 32 FDD type WCDMA RAN cells on up to three frequencies. However, BSC software restricts only the maximum number of WCDMA RAN cells which can be created as an adjacent cell for a single serving GSM cell.

For GSM cell level value and combination restrictions for adjacent WCDMA RAN cell, see GSM-WCDMA Interworking.

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 Activating and Testing BSS10101, BSS11107, BSS20477, BSS20858 and BSS20132: GSM-WCDMA  Activating and testing GSM-WCDMA Inter-System

Di-rect Access

2 Activating and testing GSM-WCDMA

Inter-System Direct Access

The purpose of the Inter-System Direct Access to the WCDMA RAN is to enable the BSC to hand the user equipment (UE) directly from the SDCCH to the WCDMA RAN. To make the Inter-System Direct Access to the WCDMA RAN, Inter-System Handover has to be enabled. The Inter-System Direct Access to the WCDMA RAN can be enabled with the handover control parameter inter-system direct access enabled (IDE).

For a description, see GSM-WCDMA Interworking  under Feature Descriptions/Radio network performance in the PDF view.

Before you start

Make sure that all interfaces between BTS, BSC, 3G MSC, RNC and WBTS, and network elements are configured and working properly. Make sure that both the appli-cation software products and software packets that are required for enabling GSM-WCDMA Inter-System Handover and Inter-System Direct Access are activated and in use in each participating network element.

Network elements involved:

 • UE

Dual mode GSM/WCDMA UE BTS

BTS with SW release which supports sending of new information elements.  Also needed: 1 TRX: MBCCHC and 7 TCHFs.

 • WBTS WCDMA BTS  • RNC RN1.5 or later   • BSC S11 or later   • 3G MSC

3G MSC that supports the Iu interface and the A interface. The MSC must support the sending of the Service Handover IE to the BSC in the ASS IGNMENT REQUEST message.

Steps

Check that GSM-WCDMA Inter-System Handover is active (WOS).

ZWOS:2,739;

GSM-WCDMA Inter-System Handover is always active if you have deployed it in the network.

Make sure that the sending of Service Handover IE is in use in the MSC (EDB). The MSC must support the sending of the Service Handover IE in the ASSIGNMENT REQUEST message. The value of the service priority should be set to SHOULD.

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DN01159392 11  Activating and Testing BSS10101, BSS11107,

BSS20477, BSS20858 and BSS20132: GSM-WCDMA

 Activating and testing GSM-WCDMA Inter-System Di-rect Access

Id:0900d8058059e071

If the MSC is not sending the service priority indication, or if the service priority indication has a value other than SHOULD, then GSM -WCDMA inter-system direct access is not allowed. The load of the serving cell has no significance, either.

Check that 56: SERVICE HANDOVER SUPPORTED has value YES:

ZEDB:NAME=<BSC name>;

For more information, see Feature 1260: Inter-system Handover and UMTS Changes in MSC  in Nokia MSC/HLR Product Documentation.

Define an adjacent cell under a RNC for the BTS (EAE).

ZEAE:BTS=<BTS identification>:INDEX=<adjacent cell index>: RNC=<radio network controller identifier>, CI=<cell

identification>: LAC=<location area code>, SAC=<service area code>, FREQ=<WCDMA downlink carrier frequency>, SCC=<scrambling code>;

Note that the MNC values, for example 6 (1-digit), 06 (2-digit) and 006 (3-digit) are dif-ferent from the BSC's point of view. The use of 1-digit MNC is not allowed according to 3GPP specifications, but it is not prevented by the BSC. The value domain is the follow-ing:

 • 0..9 (if a single digit MNC is given, the preceding digits will have value 0xF which

means "not defined")

 • 00..99 (if a 2-digit MNC is given, the preceding digit will have value 0xF which means

"not defined")

 • 000...999 (a 3-digit MNC is stored such as it has been given by user)

Set the threshold for the UE to measure WCDMA RAN cells while camping on a GSM cell (EQM).

ZEQM:BTS=<BTS identification >:::QSRI=7;

Set the threshold to a value that dual mode GSM/WCDMA UE will always search for and measure WCDMA RAN cells which are defined as adjacent cells for the serving GSM cell.

In GSM network, there is only an occasional need to measure adjacent WCDMA RAN cells while the UE is camped on a GSM cell. If the QSRI parameter h as a threshold value 7, the adjacent WCDMA RAN cells are continuously measured by dual mode

GSM/WCDMA UE. Thus, the threshold value 7 is not optimal for QSRI, because the additional measurements increase the power consumption of dual mode GSM/WCDMA UE. By using a value 15 for QSRI, WCDMA RAN cell related information is not sent on BCCH channels of the current serving GSM cell, even though some WCDMA RAN cells exist as adjacent cells for the serving GSM cell.

GPRS-capable dual mode GSM/WCDMA UE uses parameter GPRS threshold to

search WCDMA RAN cells (QSRP) instead of the QSRI parameter when NCCR

func-tionality is active in the BSC. The QS RP parameter is sent to the UE in PACKET CELL

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 Activating and Testing BSS10101, BSS11107, BSS20477, BSS20858 and BSS20132: GSM-WCDMA  Activating and testing GSM-WCDMA Inter-System

Di-rect Access

Set the minimum inter-system direct access EC/IO threshold for inter-system direct access target cell (EAH).

Set the minimum inter–system direct access Ec/Io level defined for the adjacent

WCDMA RAN cell to a value that the Ec/Io value reported by the UE exceeds the given minimum level.

ZEAH:BTS=<BTS identification>: INDEX=<adjacent cell index>:::DET= -18;

Measured and reported Ec/Io value should be over the threshold, or the adjacent WCDMA RAN cell is not considered a t arget cell for an inter-system direct a ccess. The DET value 0.5 means that a direct access can never be performed from this serving GSM cell to the adjacent WCDMA RAN cell despite the reported Ec/Io values. Enable handover control parameter inter-system direct access (EHN).

The parameter inter-system direct access enabled (IDE) enables the System Direct Access to the WCDMA RAN. If the value of the parameter is Y, the Inter-System Direct Access to the WCDMA RAN is attempted.

ZEHN:BTS=<BTS identification>:IDE=Y;

Modify BSC Level Clear Code (PM) Measurement and Handover Measurement (TPM).

ZTPM:MEASUR,CC_PM:<measurement day>,<measurement interval>,<output interval>;

ZTPM:MEASUR,HO:<measurement day>,<measurement interval>,<output interval>;

Start the measurements (TPS).

ZTPS:MEASUR,CC_PM:<start date>,<stop date>; ZTPS:MEASUR,HO:<start date>,<stop date>;

Interrogate the measurements (TPI).

ZTPI:MEASUR,CC_PM; ZTPI:MEASUR,HO;

Expected outcome

The administrative states are UNLOCKED and the operational states are ENABLED. Set up a call to source BTS.

Based on the radio link measurements and the received service priority indication from the MSC, the Inter System Direct Access is triggered.

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DN01159392 13  Activating and Testing BSS10101, BSS11107,

BSS20477, BSS20858 and BSS20132: GSM-WCDMA

 Activating and testing GSM-WCDMA Inter-System Di-rect Access

Id:0900d8058059e071 Disconnect the call.

Verify the inter-system direct access.

 At the end of the measurement period, check the measurement data in Nokia NetAct or in BSC using the MEFICO tool. Check that the counters 004181 HO ATT DUE TO INTER SYSTEM DA and 051154 EXT OUT INTER SYST EM D are updated correctly in the measurement file. For more information, see:

 • Reporter and Performance M anagement Principles in NetAct documentation  • Converting BSC Measurement and Observation Result Files with MEFICO

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 Activating and Testing BSS10101, BSS11107, BSS20477, BSS20858 and BSS20132: GSM-WCDMA  Activating CPICH RSCP Based Criterion for 2G to 3G

Cell Reselection

3 Activating CPICH RSCP Based Criterion for

2G to 3G Cell Reselection

Purpose

Dual-mode UE from Rel. 5 onwards and, optionally Rel. 99 and Rel. 4, supports a cell re-selection algorithm where CPICH RSCP (received signal code power) level is taken into account as a new criterion in cell re-selection from GSM to WCDMA RAN. This new criterion prevents dual mode UE from re-selecting a WCDMA RAN cell, where uplink quality would be too poor for reliable communication between the UE and WCDMA RAN.

The new cell re-selection algorithm contains two new parameters (FDD_RSCPmin and FDD_Qmin_Offset) that are used as part of the algorithm if they are broadcast within SI2quater message on BCCH. The FDD_RSCPmin parameter defines the minimum required RSCP level for WCDMA cell reselection. The FDD_Qmin_Offset defines a negative offset to the minimum required Ec/No level for WCDMA cell reselection. The application software CPICH RSCP Based Criterion for 2G to 3G Cell Reselection adds support for these new parameters in BSC. When the application software is active, it is possible to define values for these cell re-selection parameters by modifying the corre-sponding radio network parameters minimum RSCP threshold and minimum fdd threshold offset.

Steps

Check that GSM-WCDMA Inter-System Handover is active (WOS).

ZWOS:2,739;

GSM-WCDMA Inter-System Handover is always active if you have deployed it in the network.

Check that the licence covering CPICH RSCP Based Criterion for 2G to 3G Cell Reselection has been installed (W7I).

ZW7I:LIC,FULL:LIC=<licence code>;

Check the CPICH RSCP Based Criterion for 2G to 3G Ce ll Reselection feature state (W7I).

ZW7I:FEA,FULL:FEA=590;

Change the CPICH RSCP Based Criterion for 2G to 3G Cell Reselection feature state to 'ON' (W7M).

ZW7M:FEA=590:ON;

Modify parameters minimum RSCP threshold  and minimum fdd threshold offset (EQM).

ZEQM:SEG=<SEG identification>:::FDMO=<minimum fdd threshold offset>,FDR=<minimum RSCP threshold>;

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 Activating CPICH RSCP Based Criterion for 2G to 3G Cell Reselection

Id:0900d8058059e074

Parameter minimum RSCP threshold defines a minimum received signal code power (RSCP) threshold for cell re-selection from GSM to WCDMA RAN cell. This parameter prevents the dual-mode UE (Rel. 5 onwards) from entering a WCDMA RAN cell that has a measured RSCP value which is too weak.

Parameter minimum fdd threshold offset sets some dB's negative offset to minimum Ec/No value defined with parameter minimum fdd threshold for newer dual-mode UE (Rel. 5 onwards). This parameter makes sufficient quality (Ec/No) WCDMA RAN coverage look larger for the newer dual-mode UE that set a minimum threshold also for RSCP in their cell re-selection algorithm from GSM to WCDMA RAN. The older dual-mode UE still use the minimu m Ec/No threshold defined with minimum

fdd threshold parameter. Whenminimum fdd threshold offset parameter is

used, it is possible to set parameter minimum fdd threshold so that continuous cell re-selection between GSM and WCDMA RAN for the older dual-mode UE can be avoided, while the newer dual-mode UE can be served near the border s of the WCDMA RAN cell.

Check that parameters FDD_RSCPmin and FDD_Qmin_Offset are broadcast within SI2quater message.

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 Activating and Testing BSS10101, BSS11107, BSS20477, BSS20858 and BSS20132: GSM-WCDMA  Activating WCDMA Neighbour Cell Reporting

En-hancement

4 Activating WCDMA Neighbour Cell Reporting

Enhancement

Purpose

The dual-mode UE from Rel. 5 onwards (and optionally Rel. 99 and Rel. 4) do not report WCDMA cell measurement results to BSC from the cells that have a measured CPICH RSCP (received signal code power) level which is too weak according to parameter FDD_REPORTING_THRESHOLD_2. When the BSC does not receive measurement reports from the weak WCDMA cells, it neither triggers inter-system handovers (ISHO) nor inter-system network-controlled cell re-selections (IS-NCCR) to these cells where communication between the UE and WCDMA RAN could fail because of poor uplink quality.

The application software WCDMA Neighbour Cell Reporting Enhancement  adds

support for the parameter FDD_REPORTING_THRESHOLD_2 in BSC. When the appli-cation software is active, it is possible to def ine a value for the paramete r by modifying the corresponding radio network parameter fdd reporting threshold 2. The FDD_REPORTING_THRESHOLD_2 parameter is broadcast within SI2quater message on BCCH and within MEASUREMENT INFORMATION message on SACCH. When ISNCCR is active, the FDD_REPORTING_THRESHOLD_2 is also sent within P ACKET MEASUREMENT ORDER message on PACCH.

Steps

Check that GSM-WCDMA Inter-System Handover is active (WOS).

ZWOS:2,739;

GSM-WCDMA Inter-System Handover is always active if you have deployed it in the network.

Check that the licence covering WCDMA Neighbour Cell Reporting Enhancement has been installed (W7I).

ZW7I:LIC,FULL:LIC=<licence code>;

Check the WCDMA Neighbour Cell Reporting Enhancement feature state (W7I).

ZW7I:FEA,FULL:FEA=593;

Change the WCDMA Neighbour Cell Reporting Enhancement feature state to 'ON' (W7M).

ZW7M:FEA=593:ON;

Modify parameter Fdd Reporting Threshold 2 (EHN).

ZEHN:SEG=<SEG identification>::FRT2=<fdd reporting threshold 2>;

Check that parameter FDD_REPORTING_THRESHOLD_2 is broadcast within SI2quater message.

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DN01159392 17  Activating and Testing BSS10101, BSS11107,

BSS20477, BSS20858 and BSS20132: GSM-WCDMA

 Activating WCDMA Neighbour Cell Reporting En-hancement

Id:0900d8058059e077

Check that parameter FDD_REPORTING_THRESHOLD_2 is sent to UE within MEASUREMENT INFORMATION message during call setup.

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 Activating and Testing BSS10101, BSS11107, BSS20477, BSS20858 and BSS20132: GSM-WCDMA  Activating Mobile Specific Channel Release Message

5 Activating Mobile Specific Channel Release

Message

Purpose

When the Mobile Specific Channel Release Message is in use, the strongest WCDMA cells are indicated to dual-mode user equipment (Rel. 6 onwards) in the CHANNEL RELEASE message. When a call is terminated i n a GSM cell, the UE is directed straight to a WCDMA cell.

Steps

Check that GSM-WCDMA Inter-System Handover is active (WOS).

ZWOS:2,739;

GSM-WCDMA Inter-System Handover is always active if you have deployed it in the network.

Check that the licence covering Mobile Specific Channel Release Message has been installed (W7I).

ZW7I:LIC,FULL:LIC=<licence code>;

Check the Mobile Specific Channel Release Message feature state (W7I).

ZW7I:FEA,FULL:FEA=594;

Change the Mobile Specific Channel Release Message feature state to 'ON' (W7M).

ZW7M:FEA=594:ON;

Set up a call and release it.

To verify the activation, check the CHANNEL RELEASE message.

When a call made by a dual-mode UE is terminated, and there is a neigbour UTRAN FDD cell, check that IE 'cell selection indicator after release of all TCH and SDCCH' is included in the CHANNEL RELEASE message.

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DN01159392 19  Activating and Testing BSS10101, BSS11107,

BSS20477, BSS20858 and BSS20132: GSM-WCDMA

Deactivating CPICH RSCP Based Criterion for 2G to 3G Cell Reselection, WCDMA Neighbour Cell Rep

ort-Id:0900d8058059e07d

6 Deactivating CPICH RSCP Based Criterion

for 2G to 3G Cell Reselection, WCDMA

Neigh-bour Cell Reporting Enhancement, and

Mobile Specific Channel Release Message

Steps

Change the feature state to 'OFF' (W7M).

CPICH RSCP Based Criterion for 2G to 3G Cell Reselection:

ZW7M:FEA=590:OFF;

WCDMA Neighbour Cell Reporting Enhancement:

ZW7M:FEA=593:OFF;

Mobile Specific Channel Release Message:

ZW7M:FEA=594:OFF;

Expected outcome

 After you change the feature state to 'OF F', the parameters related to the application software are no longer visible in the MML command (EHN, EQM) interface.

Parameters FDD_RSCPmin, FDD_Qmin_Offset and

Figure

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References

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