Field Guide Change Alert

Field Guide Change Information: Name of Change: EUL Serving Admission Increase Affective Date of

Change: 7/08/2008

Change Number: 03.0-E-005 Field Guide Reference #:

Ericsson UTRAN Vol. II

Equipment Vendor: Ericsson (UTRAN) Issuer Name: M. Noah Issuer Contact #: 425 580 6716

Description of the Change: In the space below, describe at a high level what and why this change is necessary and how it may affect the current systems. This National / Regional Forum approved Field Guide Alert is sent as part of the normal Field Guide Alert process to communicate a change to the Nationally recommended values in the Volume II Field Guide for Ericsson UTRAN Configurable Parameters. Specifically, these parameters are responsible for EUL Admission Control. The following parameters within the EUL Admission Control algorithm are affected.

RNC level System Constant parameters responsible for the EUL Gain Factor are updated to reduce the NACK rate for EUL users. See the link for details.

Given the improved EUL NACK performance, eulServingCellUsersAdm [Cell, 16, Users, Fixed] can be increased from 4 to 16.

eulReservedHwBandwidthSchedDataNonServCell(Handover) [RNC, 128, 1kbit/s, Fixed] is updated to match the value of eulReservedHwBandwidthSchedDataNonServCell(NodeBFunction) [RNC, 128, 1kbit/s, Fixed].

The pertinent EUL Power and Admission Control algorithms work as follows: Each ETFCI is sent with a certain power based upon a beta factor. This beta factor is provided to the UE based upon System Constants (Ericsson only parameters) set at the RNC. The calculation of the Beta ED values in the UE are determined by the reference E-TFCI and reference E-TFCI-PO values in the Radio Bearer Setup message. The System Constant change resulted in a reduction in NACK rate from 11% to 3.8% on Carrolton TX RNC 2. KPIs were not degraded and there was no increase in uplink noise. Given the improved NACK rate, the number of EUL users served by the Serving Cell can be increased from 4 to 16. 16 is our licensed limit.

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The 7 parameter change completed nationwide by Ericsson the beginning of June included updating the value of eulReservedHwBandwidthSchedDataNonServCell to the previously recommended value of 128. Only the value that exists in the Managed Object called NodeBFunction was updated. This parameter within the NodeBFunction Managed Object only controls the amount of hardware reserved for EUL softer handover between cells on the same site. The value must also be changed for the Handover Managed Object. The same parameter name within the Handover Managed Object is specific to the amount of hardware reserved for EUL soft handover between cells on different sites.

Implementation of the Change: In the space below, describe in detail how this change is implemented for each system impacted. Please Note: All of the changes mentioned in this Field Guide Alert have already been implemented in Ericsson P6. You have the choice of rolling the changes out now, or waiting until P6 has been deployed in your market. You might want to observe the performance counter called pmNoServingCellReqDeniedEul to see if any cells have a large number of UEs denied admission when requesting the cell as serving cell due to the number of E-DCH requesting users being above the admission threshold. Obtaining a DCH (R99) on the uplink is an option if the UE has been denied the E-DCH. These changes will have no impact on e911. The market has the option of having Ericsson make all 3 changes. The changes should be made in order. 1. RNC level System Constant parameters responsible for the EUL Gain Factor

This change must be completed by Ericsson. Please create an NCR requesting Ericssons assistance in making this change. Reference FGA 03.0-E-005 and CSR 1025671.

The change can be verified by observing the EUL NACK Ratio per cell. o pmSumNackedBitsCellEul / pmSumAckedBitsCellEul

2. EUL Serving Cell Admission

eulServingCellUsersAdm [Cell, 16, Users, Fixed] can be changed for all cells using the ChangeAll script functionality.

1. Log into the OSS 2. Create a file in your home directory called eulchange.txt. 3. eulchange.txt should contain the following text only:

4. Right-click on the desktop and select Configuration > Manage Jobs > Job Editor List 5. In the Job Editor List window, select File > New > New Job 6. In the Job Editor: untitled window, select Insert > Activity Group. 7. In the right side of the window, enter eulchange for the Activity group name:

Parameters UtranCell,eulServingCellUsersAdm,16,-,-,-

8. Under Task Category, select WRAN_SupportScript_ChangeAll 9. Under Task, select ChangeAll 10. Click Search. 11. In the Network Element Selection window, click SubNetwork Folder under Network element group: 12. Select the RNC for the Cells you wish to change and click Search. 13. Move the Available: Sites to Selected by selecting them and clicking the > button. Click OK. 14. In the Job Editor: untitled window, Select the Parameters tab. 15. Under File, enter the location of the file created in step 2 in the format of /home//eulchange.txt 16. Under CountryCode, enter 310 17. Under Operator, enter ATT 18. Under System Type, enter UMTS 19. Under EmailAddress, enter your SMTP e-mail address and click Apply. 20. Click File > Save As. Select ChangeAllJob under Job Category. 21. Enter eulchange for Job Name and click Save 22. Minimize the Job Editor: eulchange window 23. In the Job Editor List window, right-click on eulchange and select Schedule 24. Click on Start Immediately > OK 25. Done.

You can check the status of the job by right-click on the desktop and select Configuration > Manage Jobs > Job Supervisor. 3. Reserved hardware for EUL Non Serving cell for the Handover Managed Object

eulReservedHwBandwidthSchedDataNonServCell(Handover) is changed via Element Manager

1. Log into the OSS and right-click on the desktop. 2. Select Configuration > WCDMA radio access network > WCDMA RAN Explorer 3. Click on the appropriate Plmn 4. Right click on the RNC and select Tools > Element manager 5. In the drop-down box, select Radio Network 6. Right click on RNC Function and select Properties 7. Click on the Handover tab. 8. Update the value of eulReservedHwBandwidthSchedDataNonServCell to 128 and click Apply. Note:

you might have to use the highest Citrix display resolution possible in order to fully see the parameter value. 9. Gracefully exit the OSS. 10. Done