NSN 2G KPI FORMULA



KPI                                               Formula
SDCCH Availability    100*(ave_sdcch_sub/res_av_denom3)/((ave_sdcch_sub/res_av_denom3)+ave_non_avail_sdcch)
SDCCH Blocking Rate100*(sdcch_busy_att/sdcch_seiz_att)
SDCCH Drop Rate100*(sdcch_radio_fail+sdcch_rf_old_ho+sdcch_user_act+sdcch_bcsu_reset+sdcch_netw_act+
sdcch_bts_fail+sdcch_lapd_fail+sdcch_a_if_fail_call_sdcch_a_if_fail_old)/((sdcch_assign+
sdcch_ho_seiz)–(sdcch_abis_fail_call+sdcch_abis_fail_old))
SDCCH Traffic(ave_busy_sdcch/res_av_denom15)
TCH Availability100*((ave_avail_tch_sum/ave_avail_tch_den)+(ave_GPRS_channels_sum/ave_GPRS_channels_den))/((ave_avail
TCH Traffic(ave_busy_tch/res_av_denom14)
TCH Blocking Rate100*((tch_call_req–tch_norm_seiz)–(msc_o_sdcch_tch+bsc_o_sdcch_tch+cell_sdcch_tch)+tch_succ_seiz_for_dir
Drop Call Rate 100(tch_radio_fail+tch_rf_old_ho+tch_abis_fail_call+tch_abis_fail_old+tch_a_if_fail_call+tch_a_if_fail_old+
tch_tr_fail+tch_tr_fail_old+ tch_lapd_fail+tch_bts_fail+tch_user_act+tch_bcsu_reset+ 
tch_netw_act+tch_act_fail_call)/ (tch_norm_seiz(msc_i_sdcch_tch+bsc_i_sdcch_tch+
cell_sdcch_tch)+tch_seiz_due_sdcch_con+(msc_i_tch_tch+bsc_i_tch_tch)–(msc_o_tch_tch+bsc_o_tch_tch))
Call Set-up Failure Rate 100–((100– SDCCH blocking rate)*(100–SDCCH drop rate)*(100–TCH blocking rate))
HO Failure Rate100*((msc_o_tch_tch_at+msc_o_sdcch_tch_at+msc_o_sdcch_at+bsc_o_tch_tch_at+bsc_o_sdcch_tch
_at+bsc_o_sdcch_at+cell_tch_tch_at+cell_sdcch_tch_at+cell_sdcch_at(msc_o_succ_ho+bsc_o_succ_ho+
cell_succ_ho))/(msc_o_tch_tch_at+ msc_o_sdcch_tch_at+msc_o_sdcch_at
HO Failure Rate (Blocking Successful)100*((msc_o_tch_tch_at+msc_o_sdcch_tch_at+msc_o_sdcch_at+bsc_o_tch_tch_at+bsc_o_sdcch_tch_at+
bsc_o_sdcch_at+cell_tch_tch_at+cell_sdcch_tch_at+cell_sdcch_at)– (msc_o_succ_ho+bsc_o_succ_ho+cell_succ_ho)–(msc_o_fail_lack+bsc_o_fail_lack+cell_fail_lack))/(msc_o_tch_tch_at+msc_o_sdcch_tch_at+
msc_o_sdcch_at+