jamal rehoming process overview 071108
TRANSCRIPT
Rehoming Process Overview
by
Jamal Arshad (LCC)July 11th, 2008
Rehoming Scenarios
• Rehoming to a different parent MSC• Rehoming to a different parent MGW• Rehoming to a different parent BSC
Rehoming Scenarios
• BSC Rehoming – Parent MSC changes
MSC(1) MSC(2)
BSC(1)
BTS(2)BTS(1) BTS(3) BTS(4) BTS(5) BTS(6) BTS(7)
Rehoming Scenarios
• BSC Rehoming – Parent MSC changes
MSC(1) MSC(2)
BSC(1)
BTS(2)BTS(1) BTS(3) BTS(4) BTS(5) BTS(6) BTS(7)
Rehoming Scenarios
• BSC Rehoming – Parent MGW changes
MGW(1) MGW(2)
BSC(1)
BTS(2)BTS(1) BTS(3) BTS(4) BTS(5) BTS(6) BTS(7)
MSS(1)
Rehoming Scenarios
• BSC Rehoming – Parent MGW changes
MGW(1) MGW(2)
BSC(1)
BTS(2)BTS(1) BTS(3) BTS(4) BTS(5) BTS(6) BTS(7)
MSS(1)
Rehoming Scenario
• Site Rehoming – Parent BSC changes
MSC(1)
BSC(2)
BTS(2)BTS(1) BTS(3) BTS(4) BTS(5) BTS(6) BTS(7)
BSC(1)
BTS(3) BTS(4) BTS(5)
Rehoming Scenario
• Site Rehoming – Parent BSC changes
MSC(1)
BSC(2)
BTS(2)BTS(1) BTS(3) BTS(4) BTS(5) BTS(6) BTS(7)
BSC(1)
BTS(3) BTS(4) BTS(5)
Why spend on Rehoming?
• Switch capacity• BSC capacity• Upgraded technology• Border optimization• Performance degradation
Switch Capacity Overloaded•BSC rehomed from MSS42\\MGW04 to MSS54\\MGW06
•Avoid chocking in switch
•A requirement from NSS
BSC Capacity Overloaded• 49 sites rehomed from IAB003_BSC1 and
IAB003_BSC3 to IAB004_BSC2 (S12)
BSC3i-600•600TRXs
•4500Erlangs
•124E1s upgradable to 252
BSC3i-2000•2000TRXs
•12000Erlangs
•378E1s
Upgraded Technology•Shorter setup time
•Shorter routing path
•Speech perception
•Pool structure possible
Upgraded Technology
Border Optimization
•BSC CP Load
•MSC CP Load
•Extra Location Updates
•Inter BSC HO delay
•KPIs’ degradation
•Bad design
Border Optimization
Border Optimization
Performance Degradation•Mismatch of BSC and MSC definitions•Sudden degradation of statistics
Performance Monitoring
• Drive Testing• Statistical monitoring
Drive Tester’s Check List• Inter BSC HO (both directions on all borders) • Inter MSC HO (both directions on all borders)• Intra cell HO (900 to 1800 and 1800 to 900) • Call drops• Call setup time• Inter cell HO • Location updates (both directions on all borders) • Speech codecs (AMR, Non AMR)• GPRS/EDGE• Calls from HOME PLMN to other PLMNs and vice versa• Emergency calls – Route verification• Subscriber distribution in VLRs (if pool activated)
Statistical Performance Monitoring
• Routine checks of all KPIs
Phase 5 Plan•IPW104_BSC2 •IJL005_BSC3 •IPW023_BSC2 •IPW104_BSC1 •LGT100_BSC2 •IPW023_BSC1 •IAB004_BSC2 •IAB004_BSC1, IAB003_BSC3, IIB103_BSC2 •IAB003_BSC1 •IPW751_BSC3 (28/38) •IIB213_BSC1•IRP310_BSC2 •IRP606_BSC1 •IPW751_BSC2
Thank you