Eul Serving Cell Users Adm

EulServingCellUsersAdm

Parameters Introduction eulServingCellUsersAdm:  Admission threshold for the number of E-DCH users having this cell as serving cell. Includes both 2 ms TTI and 10 ms TTI users. ›

RN Admission Control must reject an EUL user, requesting the cell as serving cell if the total number of serving cell EUL users including the requested is above eulServingCellUsersAdm parameter . ›

maxNumEulUsers: The maximum number of Serving EUL users allowed per cell. ›

 If license key 'Number of EUL Users per Cell' is enabled and Licensing Emergency Unlock is not activated, maxNumEulUsers cannot be set to a higher value than the license key allows. If the license key is disabled, maximum 4 EUL users are allowed per cell. If Licensing Emergency Unlock is activated, maximum 96 EUL users are allowed per cell. ›

Parameters Suggestion Current DTN network

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eulServingCellUsersAdm = 32;

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maxNumEulUsers = 32;

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Suggestion:

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For better network PS performance and reduce EUL Denied No.

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eulServingCellUsersAdm = 46;

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maxNumEulUsers = 48;

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For eulServingCellUsersAdm , we put less value compared with maxNumEulUsers to reserve the necessary resource for handover ›

Justification of changing parameter ›

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Majority of the EUL establishing failures are pegging on pmNoOfNonHoReqDeniedEul , that means not enough user adm for EUL. From the historical statistics , the hourly eul user number for the worst sites always reach maximum during busy hours.

Justification of changing parameter

Justification of changing parameter ›

From following table , we can get the relationship between pmNoOfNonHoReqDeniedEul and EUL RAB failures .

Case ---

CSSR HSUPA

 After the CR implementation , pmNoOfNonHoReqDeniedEul disappeared and the EUL CSSR has been improved obviously. Below is BKK0187 KPI trend: Tuning Time

Case ---

CSSR HSUPA

Below is BKK0028 KPI trend:

Tuning Time

Case ---

CSSR HSUPA

Below is BKK3214 KPI trend:

Tuning Time

Case ---

CSSR HSUPA

For the other performance , there was no degradation found , UL RSSI maintained as a acceptable level , the CDR maintained , CSSR maintained , EUL throughput maintained Tuning Time