Sho Overhead 4n6z3b

21 8 2014

BSC6900 UMTS Product Documentation

Soft Handover Overhead Table 1 Soft Handover Overhead KPI Name

Soft Handover Overhead (RNC)

Formula

A1: Number of UEs with 1 RL in the RNC B1: Number of UEs with 2 RLs in the RNC C1: Number of UEs with 3 RLs in the RNC D1: Number of UEs with 4 RLs in the RNC E1: Number of UEs with 5 RLs in the RNC F1: Number of UEs with 6 RLs in the RNC.

A1: Number of UEs with 1 RL B1: Number of UEs with 2 RLs C1: Number of UEs with 3 RLs D1: Number of UEs with 4 RLs E1: Number of UEs with 5 RLs F1: Number of UEs with 6 RLs. Description

Associated Counters

This KPI is used to check the consumption of network resources due to soft handover in an RNC or a Cell. It considered the radio link quantity during the soft handover. In the RNC Soft handover ratio, count the mean number of UEs with different quantity of radio links for RNC from A1 to F1. The RNC periodically samples of the number of UEs with corresponding radio links in a measurement period. At the end of the measurement period, the RNC divides the accumulated number by the sampling times to obtain the soft handover overhead. The Cell level KPI is only available for cells in a cluster. From A1 to F1 count the mean number of UEs with different quantity of Radio Links(1~6 radio links) in the Cell of the active set. Soft Handover Overhead (RNC) = {[VS.SHO.AS.1.RNC + (VS.SHO.AS.2Softer.RNC + VS.SHO.AS.2Soft.RNC ) x 2 + (VS.SHO.AS.3Soft2Softer.RNC + VS.SHO.AS.3Soft.RNC + VS.SHO.AS.3Softer.RNC ) x 3 + VS.SHO.AS.4.RNC x 4 + VS.SHO.AS.5.RNC x 5 + VS.SHO.AS.6.RNC x 6]/ (VS.SHO.AS.1.RNC+ VS.SHO.AS.2Softer.RNC + VS.SHO.AS.2Soft.RNC + VS.SHO.AS.3Soft2Softer.RNC + VS.SHO.AS.3Soft.RNC + VS.SHO.AS.3Softer.RNC +

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21 8 2014

BSC6900 UMTS Product Documentation

VS.SHO.AS.4.RNC + VS.SHO.AS.5.RNC + VS.SHO.AS.6.RNC ) - 1} x 100% Soft Handover Overhead (Cell) = [(VS.SHO.AS.1RL+ VS.SHO.AS.2RL + VS.SHO.AS.3RL + VS.SHO.AS.4RL + VS.SHO.AS.5RL + VS.SHO.AS.6RL)/ (VS.SHO.AS.1RL+ VS.SHO.AS.2RL/2 + VS.SHO.AS.3RL/3 + VS.SHO.AS.4RL/4 + VS.SHO.AS.5RL/5 + VS.SHO.AS.6RL/6)-1] x 100% Object Unit/Range Note

RNC, CELL % None

Parent topic: Coverage

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