EulServingCellUsersAdm

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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.

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Parameters Suggestion

›Current DTN network

›eulServingCellUsersAdm = 32;

›maxNumEulUsers = 32;

›Suggestion:

›For better network PS performance and reduce EUL Denied No.

›eulServingCellUsersAdm = 46;

›maxNumEulUsers = 48;

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

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Justification of changing parameter

› 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.

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Justification of changing parameter

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Justification of changing parameter› From following table , we can get the relationship between

pmNoOfNonHoReqDeniedEul and EUL RAB failures .

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Case --- CSSR HSUPA

Tuning Time

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

CR#19853_Utrancell_Para_ eulServingCellUs

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Case --- CSSR HSUPA

Tuning Time

Below is BKK0028 KPI trend:CR#19855_Utranc

ell_Para_ eulServingCellUs

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Case --- CSSR HSUPATuning TimeBelow is BKK3214 KPI trend:

CR#19855_Utrancell_Para_ eulServingCellUs

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Case --- CSSR HSUPA

Tuning Time

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

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