B11 MR1 Ed1.x / Ed2.xSeminar of GSM Network EngineeringConclusionThierry PlantierMarch 2010

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Quality of Service1/2OverviewCMCC: B11 MR1 Ed1.0 versus B10 MR1 Ed3T-Mobile: B11 MR1 Ed1.0 then Ed1.2 versus B10 MR2 Ed6.2

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Quality of Service2/2Main results in T-Mobile FO2 BSC; the KPIs defined by T-Mobile were usedIn Ed1.0, all the CS KPIs remained stable with B11, also after activation of Repeated xACCH and DPSIn Ed1.0, all the PS KPIs remained stable with B11, also after activation of DPSThe slight degradation of DL TBF normal release ratio was due to 3 cellsIn Ed1.2, the CS and PS KPIs were also stable compared to B10ConclusionNo regression of CS/PS QoS compared to B10

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PS data performancesOverviewCMCC: B11 MR1 Ed1.0 versus B10 MR1 Ed3T-Mobile: B11 MR1 Ed1.0 then Ed1.2 versus B10 MR2 Ed6.2Main results in CMCC FOEnd user PS performances (Ping and FTP, Edge & GPRS, in 2 cells):improvements of RTT for ping 1460B with 0s pause (thanks to IPCC)no regression on FTP (slight improvement for some UL tests)Main results in T-Mobile FOEnd user PS performances (Ping and FTP, Edge & GPRS + PS setup in 2 cells):Stationary tests (Ping & FTP): improved RTT & improved PS setup access timeMobility tests (for reselections in FTP transferts): equivalent results between B10 and B11, for intra-site / inter-site reselectionsConclusionno regression with B11 versus B10improvement as expected for Ping large size / Os

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StabilityOverviewCMCC: MR1 Ed1.0T-Mobile: MR1 Ed1.2Main results in CMCC FOPilot area: 1 BSCunavailabilities were not due to B11 introduction but to localized problems (LOSS-OF-ALL-CHANN, LOSS-OF-TCH, LOSS-OF-SDCCH cell alarms) or network operations.Main results in T-Mobile FOPilot area with 2 BSC; 2 weeksUnavailabilities and alarms observed but not due to B11:TC migration, TRE HW failure, BTS maintenance operationTransmission alarms, BTS resynch alarms, BTS external alarmsConclusionGood stability with B11 MR1 Ed1.x

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TIS/ONE validation: executive summary non blocking restriction blocking restriction

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Restrictions detected in FO experimentationsTRX Power Adjustment per step of 0.1 dB Restriction due to 3BKA45FBR289142 and 3BKA45FBR291086 : some EME or RMS indicators have wrong values. Not blocking because it affects only indicators related to Absolute BCCH power at BTS antenna, without impact on QoS follow-up.Repeated SACCH Restriction due to 3BKA45FBR289679: when activating the Repeated FACCH, the number of AMR TCH drops increased, due to pre-Release 6 Mobile Stations.TIS/ONE recommends to activate the feature only for the mobiles fully supporting it.PM counters improvements RFD 207081 is in restrictionMC940=NB_A_PAGING_MSG (number of PAGING messages received by the BSC from any MSC) is not consistent with existing indicators.

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TIS/ONE documentation released at DR51/2

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Tools validated by TIS/ONE

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TIS/ONE intranet pagesHome page: https://sps.eu.alcatel-lucent.com/sites/carrier.gsm_networkengg_intranet/Pages/Home.aspxB11 Release home page: https://sps.eu.alcatel-lucent.com/sites/carrier.gsm_networkengg_intranet/B11/Pages/Home.aspxPage for the seminars: https://sps.eu.alcatel-lucent.com/sites/carrier.gsm_networkengg_intranet/B11/Pages/Seminars.aspx

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